diff options
Diffstat (limited to 'arch/um')
110 files changed, 1555 insertions, 1376 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 9a23df1..c529218 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -244,6 +244,7 @@ config KERNEL_HALF_GIGS config HIGHMEM bool "Highmem support" + depends on !64BIT config KERNEL_STACK_ORDER int "Kernel stack size order" diff --git a/arch/um/Kconfig_i386 b/arch/um/Kconfig_i386 index 203c242..e41f374 100644 --- a/arch/um/Kconfig_i386 +++ b/arch/um/Kconfig_i386 @@ -1,4 +1,8 @@ -config 64_BIT +config UML_X86 + bool + default y + +config 64BIT bool default n diff --git a/arch/um/Kconfig_x86_64 b/arch/um/Kconfig_x86_64 index 768dc66..fd8d7e8 100644 --- a/arch/um/Kconfig_x86_64 +++ b/arch/um/Kconfig_x86_64 @@ -1,4 +1,8 @@ -config 64_BIT +config UML_X86 + bool + default y + +config 64BIT bool default y diff --git a/arch/um/Makefile b/arch/um/Makefile index 97bca6b..f2a0c40 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -17,7 +17,7 @@ core-y += $(ARCH_DIR)/kernel/ \ # Have to precede the include because the included Makefiles reference them. SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \ - arch-signal.h module.h vm-flags.h + module.h vm-flags.h elf.h SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header)) # XXX: The "os" symlink is only used by arch/um/include/os.h, which includes @@ -44,6 +44,11 @@ ifneq ($(MAKEFILES-INCL),) endif ARCH_INCLUDE := -I$(ARCH_DIR)/include +ifneq ($(KBUILD_SRC),) +ARCH_INCLUDE += -I$(ARCH_DIR)/include2 +ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include +MRPROPER_DIRS += $(ARCH_DIR)/include2 +endif SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) @@ -94,17 +99,18 @@ define archhelp echo ' find in the kernel root.' endef +ifneq ($(KBUILD_SRC),) +$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig_$(SUBARCH) $(ARCH_DIR)/Kconfig_arch) +CLEAN_FILES += $(ARCH_DIR)/Kconfig_arch +else $(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch) +endif -prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) \ - $(ARCH_DIR)/kernel/vmlinux.lds.S +prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib -LD_SCRIPT-$(CONFIG_LD_SCRIPT_STATIC) := uml.lds.S -LD_SCRIPT-$(CONFIG_LD_SCRIPT_DYN) := dyn.lds.S - CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT CONFIG_KERNEL_STACK_ORDER ?= 2 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) @@ -126,7 +132,7 @@ define cmd_vmlinux__ $(CC) $(CFLAGS_vmlinux) -o $@ \ -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ -Wl,--start-group $(vmlinux-main) -Wl,--end-group \ - -L/usr/lib -lutil \ + -lutil \ $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \ FORCE ,$^) ; rm -f linux endef @@ -145,31 +151,42 @@ archclean: @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ -o -name '*.gcov' \) -type f -print | xargs rm -f -#We need to re-preprocess this when the symlink dest changes. -#So we touch it when needed. -$(ARCH_DIR)/kernel/vmlinux.lds.S: FORCE - $(Q)if [ "$(shell readlink $@)" != "$(LD_SCRIPT-y)" ]; then \ - echo ' SYMLINK $@'; \ - ln -sf $(LD_SCRIPT-y) $@; \ - touch $@; \ - fi; - $(SYMLINK_HEADERS): @echo ' SYMLINK $@' +ifneq ($(KBUILD_SRC),) + ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@ +else $(Q)cd $(TOPDIR)/$(dir $@) ; \ ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@) +endif include/asm-um/arch: @echo ' SYMLINK $@' +ifneq ($(KBUILD_SRC),) + $(Q)mkdir -p include/asm-um + $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch +else $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch +endif $(ARCH_DIR)/include/sysdep: @echo ' SYMLINK $@' +ifneq ($(KBUILD_SRC),) + $(Q)mkdir -p $(ARCH_DIR)/include + $(Q)mkdir -p $(ARCH_DIR)/include2 + $(Q)ln -fsn sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep + $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include2/sysdep +else $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep +endif $(ARCH_DIR)/os: @echo ' SYMLINK $@' +ifneq ($(KBUILD_SRC),) + $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os +else $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os +endif # Generated files define filechk_umlconfig @@ -179,10 +196,31 @@ endef $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h $(call filechk,umlconfig) +$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c + $(CC) $(USER_CFLAGS) -S -o $@ $< + +$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s + $(call filechk,gen-asm-offsets) + +CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h + +$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \ + $(ARCH_SYMLINKS) \ + $(SYS_DIR)/sc.h \ + include/asm include/linux/version.h \ + include/config/MARKER \ + $(ARCH_DIR)/include/user_constants.h + $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $< + +$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s + $(call filechk,gen-asm-offsets) + +CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h + $(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task $(call filechk,gen_header) -$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os/util/mk_user_constants +$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants $(call filechk,gen_header) $(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants @@ -191,20 +229,20 @@ $(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants $(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs $(call filechk,gen_header) -$(ARCH_DIR)/os/util/mk_user_constants: $(ARCH_DIR)/os/util FORCE ; +$(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ; $(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \ FORCE ; $(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ; -$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h FORCE +$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE $(Q)$(MAKE) $(build)=$@ -$(ARCH_DIR)/kernel/skas/util: scripts_basic FORCE +$(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE $(Q)$(MAKE) $(build)=$@ -$(ARCH_DIR)/os/util: scripts_basic FORCE +$(ARCH_DIR)/os-$(OS)/util: scripts_basic FORCE $(Q)$(MAKE) $(build)=$@ export SUBARCH USER_CFLAGS OS diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386 index 97b223b..29e182d 100644 --- a/arch/um/Makefile-i386 +++ b/arch/um/Makefile-i386 @@ -1,4 +1,4 @@ -SUBARCH_CORE := arch/um/sys-i386/ +SUBARCH_CORE := arch/um/sys-i386/ arch/i386/crypto/ TOP_ADDR := $(CONFIG_TOP_ADDR) @@ -32,10 +32,10 @@ $(SYS_DIR)/sc.h: $(SYS_UTIL_DIR)/mk_sc $(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread $(call filechk,gen_header) -$(SYS_UTIL_DIR)/mk_sc: scripts_basic FORCE +$(SYS_UTIL_DIR)/mk_sc: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@ -$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(ARCH_SYMLINKS) $(GEN_HEADERS) FORCE +$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(ARCH_DIR)/kernel-offsets.h FORCE $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@ $(SYS_UTIL_DIR): scripts_basic include/asm FORCE diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64 index a779711..3214456 100644 --- a/arch/um/Makefile-x86_64 +++ b/arch/um/Makefile-x86_64 @@ -23,10 +23,10 @@ $(SYS_DIR)/sc.h: $(SYS_UTIL_DIR)/mk_sc $(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread $(call filechk,gen_header) -$(SYS_UTIL_DIR)/mk_sc: scripts_basic FORCE +$(SYS_UTIL_DIR)/mk_sc: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@ -$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(ARCH_SYMLINKS) $(GEN_HEADERS) FORCE +$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(GEN_HEADERS) $(ARCH_DIR)/kernel-offsets.h FORCE $(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@ CLEAN_FILES += $(SYS_HEADERS) diff --git a/arch/um/defconfig b/arch/um/defconfig index fc3075c..4067c3a 100644 --- a/arch/um/defconfig +++ b/arch/um/defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.12-rc1-bk1 -# Sun Mar 20 16:53:00 2005 +# Linux kernel version: 2.6.12-rc3-skas3-v9-pre2 +# Sun Apr 24 19:46:10 2005 # CONFIG_GENERIC_HARDIRQS=y CONFIG_UML=y @@ -15,7 +15,8 @@ CONFIG_GENERIC_CALIBRATE_DELAY=y # CONFIG_MODE_TT=y CONFIG_MODE_SKAS=y -# CONFIG_64_BIT is not set +CONFIG_UML_X86=y +# CONFIG_64BIT is not set CONFIG_TOP_ADDR=0xc0000000 # CONFIG_3_LEVEL_PGTABLES is not set CONFIG_ARCH_HAS_SC_SIGNALS=y @@ -41,6 +42,7 @@ CONFIG_UML_REAL_TIME_CLOCK=y CONFIG_EXPERIMENTAL=y CONFIG_CLEAN_COMPILE=y CONFIG_BROKEN_ON_SMP=y +CONFIG_INIT_ENV_ARG_LIMIT=32 # # General setup @@ -158,7 +160,6 @@ CONFIG_UML_NET_SLIRP=y # CONFIG_PACKET=y CONFIG_PACKET_MMAP=y -# CONFIG_NETLINK_DEV is not set CONFIG_UNIX=y # CONFIG_NET_KEY is not set CONFIG_INET=y @@ -412,6 +413,5 @@ CONFIG_DEBUG_INFO=y # CONFIG_DEBUG_FS is not set CONFIG_FRAME_POINTER=y CONFIG_PT_PROXY=y -# CONFIG_GPROF is not set # CONFIG_GCOV is not set # CONFIG_SYSCALL_DEBUG is not set diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c index 1f77deb..0150038 100644 --- a/arch/um/drivers/chan_kern.c +++ b/arch/um/drivers/chan_kern.c @@ -22,7 +22,7 @@ #ifdef CONFIG_NOCONFIG_CHAN static void *not_configged_init(char *str, int device, struct chan_opts *opts) { - printk(KERN_ERR "Using a channel type which is configured out of " + printf(KERN_ERR "Using a channel type which is configured out of " "UML\n"); return(NULL); } @@ -30,27 +30,27 @@ static void *not_configged_init(char *str, int device, struct chan_opts *opts) static int not_configged_open(int input, int output, int primary, void *data, char **dev_out) { - printk(KERN_ERR "Using a channel type which is configured out of " + printf(KERN_ERR "Using a channel type which is configured out of " "UML\n"); return(-ENODEV); } static void not_configged_close(int fd, void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + printf(KERN_ERR "Using a channel type which is configured out of " "UML\n"); } static int not_configged_read(int fd, char *c_out, void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + printf(KERN_ERR "Using a channel type which is configured out of " "UML\n"); return(-EIO); } static int not_configged_write(int fd, const char *buf, int len, void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + printf(KERN_ERR "Using a channel type which is configured out of " "UML\n"); return(-EIO); } @@ -58,7 +58,7 @@ static int not_configged_write(int fd, const char *buf, int len, void *data) static int not_configged_console_write(int fd, const char *buf, int len, void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + printf(KERN_ERR "Using a channel type which is configured out of " "UML\n"); return(-EIO); } @@ -66,14 +66,14 @@ static int not_configged_console_write(int fd, const char *buf, int len, static int not_configged_window_size(int fd, void *data, unsigned short *rows, unsigned short *cols) { - printk(KERN_ERR "Using a channel type which is configured out of " + printf(KERN_ERR "Using a channel type which is configured out of " "UML\n"); return(-ENODEV); } static void not_configged_free(void *data) { - printk(KERN_ERR "Using a channel type which is configured out of " + printf(KERN_ERR "Using a channel type which is configured out of " "UML\n"); } diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 6924f27..025d3be 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -39,19 +39,69 @@ static void line_timer_cb(void *arg) line_interrupt(line->driver->read_irq, arg, NULL); } -static int write_room(struct line *dev) +/* Returns the free space inside the ring buffer of this line. + * + * Should be called while holding line->lock (this does not modify datas). + */ +static int write_room(struct line *line) { int n; - if (dev->buffer == NULL) - return (LINE_BUFSIZE - 1); + if (line->buffer == NULL) + return LINE_BUFSIZE - 1; + + /* This is for the case where the buffer is wrapped! */ + n = line->head - line->tail; - n = dev->head - dev->tail; if (n <= 0) - n = LINE_BUFSIZE + n; - return (n - 1); + n = LINE_BUFSIZE + n; /* The other case */ + return n - 1; +} + +int line_write_room(struct tty_struct *tty) +{ + struct line *line = tty->driver_data; + unsigned long flags; + int room; + + if (tty->stopped) + return 0; + + spin_lock_irqsave(&line->lock, flags); + room = write_room(line); + spin_unlock_irqrestore(&line->lock, flags); + + /*XXX: Warning to remove */ + if (0 == room) + printk(KERN_DEBUG "%s: %s: no room left in buffer\n", + __FUNCTION__,tty->name); + return room; +} + +int line_chars_in_buffer(struct tty_struct *tty) +{ + struct line *line = tty->driver_data; + unsigned long flags; + int ret; + + spin_lock_irqsave(&line->lock, flags); + + /*write_room subtracts 1 for the needed NULL, so we readd it.*/ + ret = LINE_BUFSIZE - (write_room(line) + 1); + spin_unlock_irqrestore(&line->lock, flags); + + return ret; } +/* + * This copies the content of buf into the circular buffer associated with + * this line. + * The return value is the number of characters actually copied, i.e. the ones + * for which there was space: this function is not supposed to ever flush out + * the circular buffer. + * + * Must be called while holding line->lock! + */ static int buffer_data(struct line *line, const char *buf, int len) { int end, room; @@ -70,48 +120,95 @@ static int buffer_data(struct line *line, const char *buf, int len) len = (len > room) ? room : len; end = line->buffer + LINE_BUFSIZE - line->tail; - if(len < end){ + + if (len < end){ memcpy(line->tail, buf, len); line->tail += len; - } - else { + } else { + /* The circular buffer is wrapping */ memcpy(line->tail, buf, end); buf += end; memcpy(line->buffer, buf, len - end); line->tail = line->buffer + len - end; } - return(len); + return len; } +/* + * Flushes the ring buffer to the output channels. That is, write_chan is + * called, passing it line->head as buffer, and an appropriate count. + * + * On exit, returns 1 when the buffer is empty, + * 0 when the buffer is not empty on exit, + * and -errno when an error occurred. + * + * Must be called while holding line->lock!*/ static int flush_buffer(struct line *line) { int n, count; if ((line->buffer == NULL) || (line->head == line->tail)) - return(1); + return 1; if (line->tail < line->head) { + /* line->buffer + LINE_BUFSIZE is the end of the buffer! */ count = line->buffer + LINE_BUFSIZE - line->head; + n = write_chan(&line->chan_list, line->head, count, line->driver->write_irq); if (n < 0) - return(n); - if (n == count) + return n; + if (n == count) { + /* We have flushed from ->head to buffer end, now we + * must flush only from the beginning to ->tail.*/ line->head = line->buffer; - else { + } else { line->head += n; - return(0); + return 0; } } count = line->tail - line->head; n = write_chan(&line->chan_list, line->head, count, line->driver->write_irq); - if(n < 0) return(n); + + if(n < 0) + return n; line->head += n; - return(line->head == line->tail); + return line->head == line->tail; +} + +void line_flush_buffer(struct tty_struct *tty) +{ + struct line *line = tty->driver_data; + unsigned long flags; + int err; + + /*XXX: copied from line_write, verify if it is correct!*/ + if(tty->stopped) + return; + //return 0; + + spin_lock_irqsave(&line->lock, flags); + err = flush_buffer(line); + /*if (err == 1) + err = 0;*/ + spin_unlock_irqrestore(&line->lock, flags); + //return err; +} + +/* We map both ->flush_chars and ->put_char (which go in pair) onto ->flush_buffer + * and ->write. Hope it's not that bad.*/ +void line_flush_chars(struct tty_struct *tty) +{ + line_flush_buffer(tty); +} + +void line_put_char(struct tty_struct *tty, unsigned char ch) +{ + line_write(tty, &ch, sizeof(ch)); } int line_write(struct tty_struct *tty, const unsigned char *buf, int len) @@ -120,38 +217,31 @@ int line_write(struct tty_struct *tty, const unsigned char *buf, int len) unsigned long flags; int n, err, ret = 0; - if(tty->stopped) return 0; + if(tty->stopped) + return 0; - down(&line->sem); - if(line->head != line->tail){ - local_irq_save(flags); + spin_lock_irqsave(&line->lock, flags); + if (line->head != line->tail) { ret = buffer_data(line, buf, len); err = flush_buffer(line); - local_irq_restore(flags); - if(err <= 0 && (err != -EAGAIN || !ret)) + if (err <= 0 && (err != -EAGAIN || !ret)) ret = err; - } - else { + } else { n = write_chan(&line->chan_list, buf, len, line->driver->write_irq); - if(n < 0){ + if (n < 0) { ret = n; goto out_up; } len -= n; ret += n; - if(len > 0) + if (len > 0) ret += buffer_data(line, buf + n, len); } - out_up: - up(&line->sem); - return(ret); -} - -void line_put_char(struct tty_struct *tty, unsigned char ch) -{ - line_write(tty, &ch, sizeof(ch)); +out_up: + spin_unlock_irqrestore(&line->lock, flags); + return ret; } void line_set_termios(struct tty_struct *tty, struct termios * old) @@ -159,11 +249,6 @@ void line_set_termios(struct tty_struct *tty, struct termios * old) /* nothing */ } -int line_chars_in_buffer(struct tty_struct *tty) -{ - return 0; -} - static struct { int cmd; char *level; @@ -250,7 +335,7 @@ int line_ioctl(struct tty_struct *tty, struct file * file, ret = -ENOIOCTLCMD; break; } - return(ret); + return ret; } static irqreturn_t line_write_interrupt(int irq, void *data, @@ -260,18 +345,23 @@ static irqreturn_t line_write_interrupt(int irq, void *data, struct line *line = tty->driver_data; int err; + /* Interrupts are enabled here because we registered the interrupt with + * SA_INTERRUPT (see line_setup_irq).*/ + + spin_lock_irq(&line->lock); err = flush_buffer(line); - if(err == 0) - return(IRQ_NONE); - else if(err < 0){ + if (err == 0) { + return IRQ_NONE; + } else if(err < 0) { line->head = line->buffer; line->tail = line->buffer; } + spin_unlock_irq(&line->lock); if(tty == NULL) - return(IRQ_NONE); + return IRQ_NONE; - if(test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) && + if (test_bit(TTY_DO_WRITE_WAKEUP, &tty->flags) && (tty->ldisc.write_wakeup != NULL)) (tty->ldisc.write_wakeup)(tty); @@ -281,9 +371,9 @@ static irqreturn_t line_write_interrupt(int irq, void *data, * writes. */ - if(waitqueue_active(&tty->write_wait)) + if (waitqueue_active(&tty->write_wait)) wake_up_interruptible(&tty->write_wait); - return(IRQ_HANDLED); + return IRQ_HANDLED; } int line_setup_irq(int fd, int input, int output, struct tty_struct *tty) @@ -292,15 +382,18 @@ int line_setup_irq(int fd, int input, int output, struct tty_struct *tty) struct line_driver *driver = line->driver; int err = 0, flags = SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM; - if(input) err = um_request_irq(driver->read_irq, fd, IRQ_READ, + if (input) + err = um_request_irq(driver->read_irq, fd, IRQ_READ, line_interrupt, flags, driver->read_irq_name, tty); - if(err) return(err); - if(output) err = um_request_irq(driver->write_irq, fd, IRQ_WRITE, + if (err) + return err; + if (output) + err = um_request_irq(driver->write_irq, fd, IRQ_WRITE, line_write_interrupt, flags, driver->write_irq_name, tty); line->have_irq = 1; - return(err); + return err; } void line_disable(struct tty_struct *tty, int current_irq) @@ -336,7 +429,9 @@ int line_open(struct line *lines, struct tty_struct *tty, line = &lines[tty->index]; tty->driver_data = line; - down(&line->sem); + /* The IRQ which takes this lock is not yet enabled and won't be run + * before the end, so we don't need to use spin_lock_irq.*/ + spin_lock(&line->lock); if (tty->count == 1) { if (!line->valid) { err = -ENODEV; @@ -349,6 +444,7 @@ int line_open(struct line *lines, struct tty_struct *tty, err = open_chan(&line->chan_list); if(err) goto out; } + /* Here the interrupt is registered.*/ enable_chan(&line->chan_list, tty); INIT_WORK(&line->task, line_timer_cb, tty); } @@ -362,21 +458,36 @@ int line_open(struct line *lines, struct tty_struct *tty, line->count++; out: - up(&line->sem); - return(err); + spin_unlock(&line->lock); + return err; } +static void unregister_winch(struct tty_struct *tty); + void line_close(struct tty_struct *tty, struct file * filp) { struct line *line = tty->driver_data; - down(&line->sem); + /* XXX: I assume this should be called in process context, not with + * interrupts disabled! + */ + spin_lock_irq(&line->lock); + + /* We ignore the error anyway! */ + flush_buffer(line); + line->count--; if (tty->count == 1) { line_disable(tty, -1); tty->driver_data = NULL; } - up(&line->sem); + + if((line->count == 0) && line->sigio){ + unregister_winch(tty); + line->sigio = 0; + } + + spin_unlock_irq(&line->lock); } void close_lines(struct line *lines, int nlines) @@ -387,31 +498,41 @@ void close_lines(struct line *lines, int nlines) close_chan(&lines[i].chan_list); } -int line_setup(struct line *lines, int num, char *init, int all_allowed) +/* Common setup code for both startup command line and mconsole initialization. + * @lines contains the the array (of size @num) to modify; + * @init is the setup string; + * @all_allowed is a boolean saying if we can setup the whole @lines + * at once. For instance, it will be usually true for startup init. (where we + * can use con=xterm) and false for mconsole.*/ + +int line_setup(struct line *lines, unsigned int num, char *init, int all_allowed) { int i, n; char *end; - if(*init == '=') n = -1; - else { + if(*init == '=') { + /* We said con=/ssl= instead of con#=, so we are configuring all + * consoles at once.*/ + n = -1; + } else { n = simple_strtoul(init, &end, 0); if(*end != '='){ printk(KERN_ERR "line_setup failed to parse \"%s\"\n", init); - return(0); + return 0; } init = end; } init++; - if((n >= 0) && (n >= num)){ + + if (n >= (signed int) num) { printk("line_setup - %d out of range ((0 ... %d) allowed)\n", n, num - 1); - return(0); - } - else if (n >= 0){ + return 0; + } else if (n >= 0){ if (lines[n].count > 0) { printk("line_setup - device %d is open\n", n); - return(0); + return 0; } if (lines[n].init_pri <= INIT_ONE){ lines[n].init_pri = INIT_ONE; @@ -422,13 +543,11 @@ int line_setup(struct line *lines, int num, char *init, int all_allowed) lines[n].valid = 1; } } - } - else if(!all_allowed){ + } else if(!all_allowed){ printk("line_setup - can't configure all devices from " "mconsole\n"); - return(0); - } - else { + return 0; + } else { for(i = 0; i < num; i++){ if(lines[i].init_pri <= INIT_ALL){ lines[i].init_pri = INIT_ALL; @@ -440,21 +559,21 @@ int line_setup(struct line *lines, int num, char *init, int all_allowed) } } } - return(1); + return 1; } -int line_config(struct line *lines, int num, char *str) +int line_config(struct line *lines, unsigned int num, char *str) { char *new = uml_strdup(str); if(new == NULL){ printk("line_config - uml_strdup failed\n"); - return(-ENOMEM); + return -ENOMEM; } - return(!line_setup(lines, num, new, 0)); + return !line_setup(lines, num, new, 0); } -int line_get_config(char *name, struct line *lines, int num, char *str, +int line_get_config(char *name, struct line *lines, unsigned int num, char *str, int size, char **error_out) { struct line *line; @@ -464,47 +583,33 @@ int line_get_config(char *name, struct line *lines, int num, char *str, dev = simple_strtoul(name, &end, 0); if((*end != '\0') || (end == name)){ *error_out = "line_get_config failed to parse device number"; - return(0); + return 0; } if((dev < 0) || (dev >= num)){ - *error_out = "device number of of range"; - return(0); + *error_out = "device number out of range"; + return 0; } line = &lines[dev]; - down(&line->sem); + spin_lock(&line->lock); if(!line->valid) CONFIG_CHUNK(str, size, n, "none", 1); else if(line->count == 0) CONFIG_CHUNK(str, size, n, line->init_str, 1); else n = chan_config_string(&line->chan_list, str, size, error_out); - up(&line->sem); + spin_unlock(&line->lock); - return(n); + return n; } -int line_remove(struct line *lines, int num, char *str) +int line_remove(struct line *lines, unsigned int num, char *str) { char config[sizeof("conxxxx=none\0")]; sprintf(config, "%s=none", str); - return(!line_setup(lines, num, config, 0)); -} - -int line_write_room(struct tty_struct *tty) -{ - struct line *dev = tty->driver_data; - int room; - - if (tty->stopped) - return 0; - room = write_room(dev); - if (0 == room) - printk(KERN_DEBUG "%s: %s: no room left in buffer\n", - __FUNCTION__,tty->name); - return room; + return !line_setup(lines, num, config, 0); } struct tty_driver *line_register_devfs(struct lines *set, @@ -553,7 +658,7 @@ void lines_init(struct line *lines, int nlines) for(i = 0; i < nlines; i++){ line = &lines[i]; INIT_LIST_HEAD(&line->chan_list); - sema_init(&line->sem, 1); + spin_lock_init(&line->lock); if(line->init_str != NULL){ line->init_str = uml_strdup(line->init_str); if(line->init_str == NULL) @@ -587,7 +692,7 @@ irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused) "errno = %d\n", -err); printk("fd %d is losing SIGWINCH support\n", winch->tty_fd); - return(IRQ_HANDLED); + return IRQ_HANDLED; } goto out; } @@ -603,7 +708,7 @@ irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused) out: if(winch->fd != -1) reactivate_fd(winch->fd, WINCH_IRQ); - return(IRQ_HANDLED); + return IRQ_HANDLED; } DECLARE_MUTEX(winch_handler_sem); @@ -625,7 +730,7 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty) .pid = pid, .tty = tty }); list_add(&winch->list, &winch_handlers); - if(um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt, + if(um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt, SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM, "winch", winch) < 0) printk("register_winch_irq - failed to register IRQ\n"); @@ -633,6 +738,34 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty) up(&winch_handler_sem); } +static void unregister_winch(struct tty_struct *tty) +{ + struct list_head *ele; + struct winch *winch, *found = NULL; + + down(&winch_handler_sem); + list_for_each(ele, &winch_handlers){ + winch = list_entry(ele, struct winch, list); + if(winch->tty == tty){ + found = winch; + break; + } + } + + if(found == NULL) + goto out; + + if(winch->pid != -1) + os_kill_process(winch->pid, 1); + + free_irq_by_irq_and_dev(WINCH_IRQ, winch); + free_irq(WINCH_IRQ, winch); + list_del(&winch->list); + kfree(winch); + out: + up(&winch_handler_sem); +} + static void winch_cleanup(void) { struct list_head *ele; @@ -656,26 +789,16 @@ char *add_xterm_umid(char *base) int len; umid = get_umid(1); - if(umid == NULL) return(base); + if(umid == NULL) + return base; len = strlen(base) + strlen(" ()") + strlen(umid) + 1; title = kmalloc(len, GFP_KERNEL); if(title == NULL){ printk("Failed to allocate buffer for xterm title\n"); - return(base); + return base; } snprintf(title, len, "%s (%s)", base, umid); - return(title); + return title; } - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c index c5839c3..a2bac42 100644 --- a/arch/um/drivers/ssl.c +++ b/arch/um/drivers/ssl.c @@ -107,11 +107,6 @@ int ssl_open(struct tty_struct *tty, struct file *filp) } #if 0 -static int ssl_chars_in_buffer(struct tty_struct *tty) -{ - return(0); -} - static void ssl_flush_buffer(struct tty_struct *tty) { return; @@ -149,11 +144,11 @@ static struct tty_operations ssl_ops = { .put_char = line_put_char, .write_room = line_write_room, .chars_in_buffer = line_chars_in_buffer, + .flush_buffer = line_flush_buffer, + .flush_chars = line_flush_chars, .set_termios = line_set_termios, .ioctl = line_ioctl, #if 0 - .flush_chars = ssl_flush_chars, - .flush_buffer = ssl_flush_buffer, .throttle = ssl_throttle, .unthrottle = ssl_unthrottle, .stop = ssl_stop, @@ -171,10 +166,11 @@ static void ssl_console_write(struct console *c, const char *string, unsigned len) { struct line *line = &serial_lines[c->index]; + unsigned long flags; - down(&line->sem); + spin_lock_irqsave(&line->lock, flags); console_write_chan(&line->chan_list, string, len); - up(&line->sem); + spin_unlock_irqrestore(&line->lock, flags); } static struct tty_driver *ssl_console_device(struct console *c, int *index) @@ -238,14 +234,3 @@ static int ssl_chan_setup(char *str) __setup("ssl", ssl_chan_setup); __channel_help(ssl_chan_setup, "ssl"); - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c index e604d7c..361d0be 100644 --- a/arch/um/drivers/stdio_console.c +++ b/arch/um/drivers/stdio_console.c @@ -116,8 +116,11 @@ static struct tty_operations console_ops = { .open = con_open, .close = line_close, .write = line_write, + .put_char = line_put_char, .write_room = line_write_room, .chars_in_buffer = line_chars_in_buffer, + .flush_buffer = line_flush_buffer, + .flush_chars = line_flush_chars, .set_termios = line_set_termios, .ioctl = line_ioctl, }; @@ -126,10 +129,11 @@ static void uml_console_write(struct console *console, const char *string, unsigned len) { struct line *line = &vts[console->index]; + unsigned long flags; - down(&line->sem); + spin_lock_irqsave(&line->lock, flags); console_write_chan(&line->chan_list, string, len); - up(&line->sem); + spin_unlock_irqrestore(&line->lock, flags); } static struct tty_driver *uml_console_device(struct console *c, int *index) @@ -192,14 +196,3 @@ static int console_chan_setup(char *str) } __setup("con", console_chan_setup); __channel_help(console_chan_setup, "con"); - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 4d8b165..9a56ff9 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -156,6 +156,7 @@ static struct gendisk *fake_gendisk[MAX_DEV]; static struct openflags global_openflags = OPEN_FLAGS; struct cow { + /* This is the backing file, actually */ char *file; int fd; unsigned long *bitmap; @@ -927,10 +928,14 @@ static int ubd_open(struct inode *inode, struct file *filp) } } dev->count++; - if((filp->f_mode & FMODE_WRITE) && !dev->openflags.w){ + set_disk_ro(disk, !dev->openflags.w); + + /* This should no more be needed. And it didn't work anyway to exclude + * read-write remounting of filesystems.*/ + /*if((filp->f_mode & FMODE_WRITE) && !dev->openflags.w){ if(--dev->count == 0) ubd_close(dev); err = -EROFS; - } + }*/ out: return(err); } @@ -1096,6 +1101,7 @@ static int prepare_request(struct request *req, struct io_thread_req *io_req) if(req->rq_status == RQ_INACTIVE) return(1); + /* This should be impossible now */ if((rq_data_dir(req) == WRITE) && !dev->openflags.w){ printk("Write attempted on readonly ubd device %s\n", disk->disk_name); @@ -1243,6 +1249,7 @@ static int ubd_check_remapped(int fd, unsigned long address, int is_write, /* It's a write to a ubd device */ + /* This should be impossible now */ if(!dev->openflags.w){ /* It's a write access on a read-only device - probably * shouldn't happen. If the kernel is trying to change @@ -1605,8 +1612,7 @@ void do_io(struct io_thread_req *req) } } while((n < len) && (n != 0)); if (n < len) memset(&buf[n], 0, len - n); - } - else { + } else { n = os_write_file(req->fds[bit], buf, len); if(n != len){ printk("do_io - write failed err = %d " diff --git a/arch/um/drivers/xterm_kern.c b/arch/um/drivers/xterm_kern.c index 7917b9d..a4fdf35 100644 --- a/arch/um/drivers/xterm_kern.c +++ b/arch/um/drivers/xterm_kern.c @@ -7,7 +7,6 @@ #include "linux/slab.h" #include "linux/signal.h" #include "linux/interrupt.h" -#include "asm/semaphore.h" #include "asm/irq.h" #include "irq_user.h" #include "irq_kern.h" diff --git a/arch/um/include/common-offsets.h b/arch/um/include/common-offsets.h new file mode 100644 index 0000000..d705daa --- /dev/null +++ b/arch/um/include/common-offsets.h @@ -0,0 +1,14 @@ +/* for use by sys-$SUBARCH/kernel-offsets.c */ + +OFFSET(TASK_REGS, task_struct, thread.regs); +OFFSET(TASK_PID, task_struct, pid); +DEFINE(UM_KERN_PAGE_SIZE, PAGE_SIZE); +DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC); +DEFINE_STR(UM_KERN_EMERG, KERN_EMERG); +DEFINE_STR(UM_KERN_ALERT, KERN_ALERT); +DEFINE_STR(UM_KERN_CRIT, KERN_CRIT); +DEFINE_STR(UM_KERN_ERR, KERN_ERR); +DEFINE_STR(UM_KERN_WARNING, KERN_WARNING); +DEFINE_STR(UM_KERN_NOTICE, KERN_NOTICE); +DEFINE_STR(UM_KERN_INFO, KERN_INFO); +DEFINE_STR(UM_KERN_DEBUG, KERN_DEBUG); diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h index 15389c8..e5fec55 100644 --- a/arch/um/include/kern_util.h +++ b/arch/um/include/kern_util.h @@ -8,6 +8,7 @@ #include "linux/threads.h" #include "sysdep/ptrace.h" +#include "sysdep/faultinfo.h" extern int ncpus; extern char *linux_prog; @@ -31,8 +32,8 @@ extern int current_pid(void); extern unsigned long alloc_stack(int order, int atomic); extern int do_signal(void); extern int is_stack_fault(unsigned long sp); -extern unsigned long segv(unsigned long address, unsigned long ip, - int is_write, int is_user, void *sc); +extern unsigned long segv(struct faultinfo fi, unsigned long ip, + int is_user, void *sc); extern int handle_page_fault(unsigned long address, unsigned long ip, int is_write, int is_user, int *code_out); extern void syscall_ready(void); @@ -82,7 +83,7 @@ extern void timer_irq(union uml_pt_regs *regs); extern void unprotect_stack(unsigned long stack); extern void do_uml_exitcalls(void); extern int attach_debugger(int idle_pid, int pid, int stop); -extern void bad_segv(unsigned long address, unsigned long ip, int is_write); +extern void bad_segv(struct faultinfo fi, unsigned long ip); extern int config_gdb(char *str); extern int remove_gdb(void); extern char *uml_strdup(char *string); diff --git a/arch/um/include/line.h b/arch/um/include/line.h index 6d81ecc..4c5e92c 100644 --- a/arch/um/include/line.h +++ b/arch/um/include/line.h @@ -10,7 +10,7 @@ #include "linux/workqueue.h" #include "linux/tty.h" #include "linux/interrupt.h" -#include "asm/semaphore.h" +#include "linux/spinlock.h" #include "chan_user.h" #include "mconsole_kern.h" @@ -37,10 +37,18 @@ struct line { struct list_head chan_list; int valid; int count; - struct semaphore sem; + /*This lock is actually, mostly, local to*/ + spinlock_t lock; + + /* Yes, this is a real circular buffer. + * XXX: And this should become a struct kfifo! + * + * buffer points to a buffer allocated on demand, of length + * LINE_BUFSIZE, head to the start of the ring, tail to the end.*/ char *buffer; char *head; char *tail; + int sigio; struct work_struct task; struct line_driver *driver; @@ -52,7 +60,6 @@ struct line { init_pri : INIT_STATIC, \ chan_list : { }, \ valid : 1, \ - sem : { }, \ buffer : NULL, \ head : NULL, \ tail : NULL, \ @@ -69,15 +76,18 @@ struct lines { extern void line_close(struct tty_struct *tty, struct file * filp); extern int line_open(struct line *lines, struct tty_struct *tty, struct chan_opts *opts); -extern int line_setup(struct line *lines, int num, char *init, +extern int line_setup(struct line *lines, unsigned int sizeof_lines, char *init, int all_allowed); extern int line_write(struct tty_struct *tty, const unsigned char *buf, int len); extern void line_put_char(struct tty_struct *tty, unsigned char ch); extern void line_set_termios(struct tty_struct *tty, struct termios * old); extern int line_chars_in_buffer(struct tty_struct *tty); +extern void line_flush_buffer(struct tty_struct *tty); +extern void line_flush_chars(struct tty_struct *tty); extern int line_write_room(struct tty_struct *tty); extern int line_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg); + extern char *add_xterm_umid(char *base); extern int line_setup_irq(int fd, int input, int output, struct tty_struct *tty); extern void line_close_chan(struct line *line); @@ -89,20 +99,10 @@ extern struct tty_driver * line_register_devfs(struct lines *set, int nlines); extern void lines_init(struct line *lines, int nlines); extern void close_lines(struct line *lines, int nlines); -extern int line_config(struct line *lines, int num, char *str); -extern int line_remove(struct line *lines, int num, char *str); -extern int line_get_config(char *dev, struct line *lines, int num, char *str, + +extern int line_config(struct line *lines, unsigned int sizeof_lines, char *str); +extern int line_remove(struct line *lines, unsigned int sizeof_lines, char *str); +extern int line_get_config(char *dev, struct line *lines, unsigned int sizeof_lines, char *str, int size, char **error_out); #endif - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/include/os.h b/arch/um/include/os.h index 07340c8..d246d5a 100644 --- a/arch/um/include/os.h +++ b/arch/um/include/os.h @@ -160,6 +160,7 @@ extern void os_kill_process(int pid, int reap_child); extern void os_kill_ptraced_process(int pid, int reap_child); extern void os_usr1_process(int pid); extern int os_getpid(void); +extern int os_getpgrp(void); extern int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len, int r, int w, int x); diff --git a/arch/um/include/skas_ptrace.h b/arch/um/include/skas_ptrace.h index cfb5fb4..cd2327d 100644 --- a/arch/um/include/skas_ptrace.h +++ b/arch/um/include/skas_ptrace.h @@ -6,22 +6,11 @@ #ifndef __SKAS_PTRACE_H #define __SKAS_PTRACE_H -struct ptrace_faultinfo { - int is_write; - unsigned long addr; -}; - -struct ptrace_ldt { - int func; - void *ptr; - unsigned long bytecount; -}; - #define PTRACE_FAULTINFO 52 -#define PTRACE_SIGPENDING 53 -#define PTRACE_LDT 54 #define PTRACE_SWITCH_MM 55 +#include "sysdep/skas_ptrace.h" + #endif /* diff --git a/arch/um/include/sysdep-i386/checksum.h b/arch/um/include/sysdep-i386/checksum.h index 3a2a458..764ba4d 100644 --- a/arch/um/include/sysdep-i386/checksum.h +++ b/arch/um/include/sysdep-i386/checksum.h @@ -24,19 +24,6 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum); /* - * the same as csum_partial, but copies from src while it - * checksums, and handles user-space pointer exceptions correctly, when needed. - * - * here even more important to align src and dst on a 32-bit (or even - * better 64-bit) boundary - */ - -unsigned int csum_partial_copy_to(const unsigned char *src, unsigned char *dst, - int len, int sum, int *err_ptr); -unsigned int csum_partial_copy_from(const unsigned char *src, unsigned char *dst, - int len, int sum, int *err_ptr); - -/* * Note: when you get a NULL pointer exception here this means someone * passed in an incorrect kernel address to one of these functions. * @@ -52,11 +39,24 @@ unsigned int csum_partial_copy_nocheck(const unsigned char *src, unsigned char * return(csum_partial(dst, len, sum)); } +/* + * the same as csum_partial, but copies from src while it + * checksums, and handles user-space pointer exceptions correctly, when needed. + * + * here even more important to align src and dst on a 32-bit (or even + * better 64-bit) boundary + */ + static __inline__ unsigned int csum_partial_copy_from_user(const unsigned char *src, unsigned char *dst, int len, int sum, int *err_ptr) { - return csum_partial_copy_from(src, dst, len, sum, err_ptr); + if(copy_from_user(dst, src, len)){ + *err_ptr = -EFAULT; + return(-1); + } + + return csum_partial(dst, len, sum); } /* @@ -67,7 +67,6 @@ unsigned int csum_partial_copy_from_user(const unsigned char *src, unsigned char */ #define csum_partial_copy_fromuser csum_partial_copy_from_user -unsigned int csum_partial_copy(const unsigned char *src, unsigned char *dst, int len, int sum); /* * This is a version of ip_compute_csum() optimized for IP headers, @@ -196,8 +195,14 @@ static __inline__ unsigned int csum_and_copy_to_user(const unsigned char *src, unsigned char *dst, int len, int sum, int *err_ptr) { - if (access_ok(VERIFY_WRITE, dst, len)) - return(csum_partial_copy_to(src, dst, len, sum, err_ptr)); + if (access_ok(VERIFY_WRITE, dst, len)){ + if(copy_to_user(dst, src, len)){ + *err_ptr = -EFAULT; + return(-1); + } + + return csum_partial(src, len, sum); + } if (len) *err_ptr = -EFAULT; diff --git a/arch/um/include/sysdep-i386/faultinfo.h b/arch/um/include/sysdep-i386/faultinfo.h new file mode 100644 index 0000000..db437cc --- /dev/null +++ b/arch/um/include/sysdep-i386/faultinfo.h @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2004 Fujitsu Siemens Computers GmbH + * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com> + * Licensed under the GPL + */ + +#ifndef __FAULTINFO_I386_H +#define __FAULTINFO_I386_H + +/* this structure contains the full arch-specific faultinfo + * from the traps. + * On i386, ptrace_faultinfo unfortunately doesn't provide + * all the info, since trap_no is missing. + * All common elements are defined at the same position in + * both structures, thus making it easy to copy the + * contents without knowledge about the structure elements. + */ +struct faultinfo { + int error_code; /* in ptrace_faultinfo misleadingly called is_write */ + unsigned long cr2; /* in ptrace_faultinfo called addr */ + int trap_no; /* missing in ptrace_faultinfo */ +}; + +#define FAULT_WRITE(fi) ((fi).error_code & 2) +#define FAULT_ADDRESS(fi) ((fi).cr2) + +#define PTRACE_FULL_FAULTINFO 0 + +#endif diff --git a/arch/um/include/sysdep-i386/ptrace.h b/arch/um/include/sysdep-i386/ptrace.h index 661d495..84ec7ff 100644 --- a/arch/um/include/sysdep-i386/ptrace.h +++ b/arch/um/include/sysdep-i386/ptrace.h @@ -31,6 +31,7 @@ extern int sysemu_supported; #ifdef UML_CONFIG_MODE_SKAS #include "skas_ptregs.h" +#include "sysdep/faultinfo.h" #define REGS_IP(r) ((r)[HOST_IP]) #define REGS_SP(r) ((r)[HOST_SP]) @@ -53,12 +54,6 @@ extern int sysemu_supported; #define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r)) -#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type) - -#define REGS_FAULT_ADDR(r) ((r)->fault_addr) - -#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type) - #endif #ifndef PTRACE_SYSEMU_SINGLESTEP #define PTRACE_SYSEMU_SINGLESTEP 32 @@ -71,6 +66,7 @@ union uml_pt_regs { struct tt_regs { long syscall; void *sc; + struct faultinfo faultinfo; } tt; #endif #ifdef UML_CONFIG_MODE_SKAS @@ -78,9 +74,7 @@ union uml_pt_regs { unsigned long regs[HOST_FRAME_SIZE]; unsigned long fp[HOST_FP_SIZE]; unsigned long xfp[HOST_XFP_SIZE]; - unsigned long fault_addr; - unsigned long fault_type; - unsigned long trap_type; + struct faultinfo faultinfo; long syscall; int is_user; } skas; @@ -217,15 +211,8 @@ struct syscall_args { #define UPT_SYSCALL_NR(r) UPT_ORIG_EAX(r) #define UPT_SYSCALL_RET(r) UPT_EAX(r) -#define UPT_SEGV_IS_FIXABLE(r) \ - CHOOSE_MODE(SC_SEGV_IS_FIXABLE(UPT_SC(r)), \ - REGS_SEGV_IS_FIXABLE(&r->skas)) - -#define UPT_FAULT_ADDR(r) \ - __CHOOSE_MODE(SC_FAULT_ADDR(UPT_SC(r)), REGS_FAULT_ADDR(&r->skas)) - -#define UPT_FAULT_WRITE(r) \ - CHOOSE_MODE(SC_FAULT_WRITE(UPT_SC(r)), REGS_FAULT_WRITE(&r->skas)) +#define UPT_FAULTINFO(r) \ + CHOOSE_MODE((&(r)->tt.faultinfo), (&(r)->skas.faultinfo)) #endif diff --git a/arch/um/include/sysdep-i386/sigcontext.h b/arch/um/include/sysdep-i386/sigcontext.h index dfee589..1fe7292 100644 --- a/arch/um/include/sysdep-i386/sigcontext.h +++ b/arch/um/include/sysdep-i386/sigcontext.h @@ -13,15 +13,12 @@ #define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc)) #define SC_SET_SYSCALL_RETURN(sc, result) SC_EAX(sc) = (result) -#define SC_FAULT_ADDR(sc) SC_CR2(sc) -#define SC_FAULT_TYPE(sc) SC_ERR(sc) - -#define FAULT_WRITE(err) (err & 2) -#define TO_SC_ERR(is_write) ((is_write) ? 2 : 0) - -#define SC_FAULT_WRITE(sc) (FAULT_WRITE(SC_ERR(sc))) - -#define SC_TRAP_TYPE(sc) SC_TRAPNO(sc) +#define GET_FAULTINFO_FROM_SC(fi,sc) \ + { \ + (fi).cr2 = SC_CR2(sc); \ + (fi).error_code = SC_ERR(sc); \ + (fi).trap_no = SC_TRAPNO(sc); \ + } /* ptrace expects that, at the start of a system call, %eax contains * -ENOSYS, so this makes it so. @@ -29,9 +26,7 @@ #define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0) /* This is Page Fault */ -#define SEGV_IS_FIXABLE(trap) (trap == 14) - -#define SC_SEGV_IS_FIXABLE(sc) (SEGV_IS_FIXABLE(SC_TRAPNO(sc))) +#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14) extern unsigned long *sc_sigmask(void *sc_ptr); extern int sc_get_fpregs(unsigned long buf, void *sc_ptr); diff --git a/arch/um/include/sysdep-i386/signal.h b/arch/um/include/sysdep-i386/signal.h index b1e1f7a..07518b1 100644 --- a/arch/um/include/sysdep-i386/signal.h +++ b/arch/um/include/sysdep-i386/signal.h @@ -8,6 +8,8 @@ #include <signal.h> +#define ARCH_SIGHDLR_PARAM int sig + #define ARCH_GET_SIGCONTEXT(sc, sig) \ do sc = (struct sigcontext *) (&sig + 1); while(0) diff --git a/arch/um/include/sysdep-i386/skas_ptrace.h b/arch/um/include/sysdep-i386/skas_ptrace.h new file mode 100644 index 0000000..e27b8a7 --- /dev/null +++ b/arch/um/include/sysdep-i386/skas_ptrace.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_I386_SKAS_PTRACE_H +#define __SYSDEP_I386_SKAS_PTRACE_H + +struct ptrace_faultinfo { + int is_write; + unsigned long addr; +}; + +struct ptrace_ldt { + int func; + void *ptr; + unsigned long bytecount; +}; + +#define PTRACE_LDT 54 + +#endif diff --git a/arch/um/include/sysdep-i386/syscalls.h b/arch/um/include/sysdep-i386/syscalls.h index 5db81ec..be0a3e3 100644 --- a/arch/um/include/sysdep-i386/syscalls.h +++ b/arch/um/include/sysdep-i386/syscalls.h @@ -22,102 +22,3 @@ extern syscall_handler_t old_mmap_i386; extern long sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff); - -/* On i386 they choose a meaningless naming.*/ -#define __NR_kexec_load __NR_sys_kexec_load - -#define ARCH_SYSCALLS \ - [ __NR_waitpid ] = (syscall_handler_t *) sys_waitpid, \ - [ __NR_break ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_oldstat ] = (syscall_handler_t *) sys_stat, \ - [ __NR_umount ] = (syscall_handler_t *) sys_oldumount, \ - [ __NR_stime ] = um_stime, \ - [ __NR_oldfstat ] = (syscall_handler_t *) sys_fstat, \ - [ __NR_stty ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_gtty ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_nice ] = (syscall_handler_t *) sys_nice, \ - [ __NR_ftime ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_prof ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_signal ] = (syscall_handler_t *) sys_signal, \ - [ __NR_lock ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_mpx ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_ulimit ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_oldolduname ] = (syscall_handler_t *) sys_olduname, \ - [ __NR_sigaction ] = (syscall_handler_t *) sys_sigaction, \ - [ __NR_sgetmask ] = (syscall_handler_t *) sys_sgetmask, \ - [ __NR_ssetmask ] = (syscall_handler_t *) sys_ssetmask, \ - [ __NR_sigsuspend ] = (syscall_handler_t *) sys_sigsuspend, \ - [ __NR_sigpending ] = (syscall_handler_t *) sys_sigpending, \ - [ __NR_oldlstat ] = (syscall_handler_t *) sys_lstat, \ - [ __NR_readdir ] = old_readdir, \ - [ __NR_profil ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_socketcall ] = (syscall_handler_t *) sys_socketcall, \ - [ __NR_olduname ] = (syscall_handler_t *) sys_uname, \ - [ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_idle ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_ipc ] = (syscall_handler_t *) sys_ipc, \ - [ __NR_sigreturn ] = (syscall_handler_t *) sys_sigreturn, \ - [ __NR_sigprocmask ] = (syscall_handler_t *) sys_sigprocmask, \ - [ __NR_bdflush ] = (syscall_handler_t *) sys_bdflush, \ - [ __NR__llseek ] = (syscall_handler_t *) sys_llseek, \ - [ __NR__newselect ] = (syscall_handler_t *) sys_select, \ - [ __NR_vm86 ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_mmap ] = (syscall_handler_t *) old_mmap_i386, \ - [ __NR_ugetrlimit ] = (syscall_handler_t *) sys_getrlimit, \ - [ __NR_mmap2 ] = (syscall_handler_t *) sys_mmap2, \ - [ __NR_truncate64 ] = (syscall_handler_t *) sys_truncate64, \ - [ __NR_ftruncate64 ] = (syscall_handler_t *) sys_ftruncate64, \ - [ __NR_stat64 ] = (syscall_handler_t *) sys_stat64, \ - [ __NR_lstat64 ] = (syscall_handler_t *) sys_lstat64, \ - [ __NR_fstat64 ] = (syscall_handler_t *) sys_fstat64, \ - [ __NR_fcntl64 ] = (syscall_handler_t *) sys_fcntl64, \ - [ __NR_sendfile64 ] = (syscall_handler_t *) sys_sendfile64, \ - [ __NR_statfs64 ] = (syscall_handler_t *) sys_statfs64, \ - [ __NR_fstatfs64 ] = (syscall_handler_t *) sys_fstatfs64, \ - [ __NR_fadvise64_64 ] = (syscall_handler_t *) sys_fadvise64_64, \ - [ __NR_select ] = (syscall_handler_t *) old_select, \ - [ __NR_vm86old ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_modify_ldt ] = (syscall_handler_t *) sys_modify_ldt, \ - [ __NR_lchown32 ] = (syscall_handler_t *) sys_lchown, \ - [ __NR_getuid32 ] = (syscall_handler_t *) sys_getuid, \ - [ __NR_getgid32 ] = (syscall_handler_t *) sys_getgid, \ - [ __NR_geteuid32 ] = (syscall_handler_t *) sys_geteuid, \ - [ __NR_getegid32 ] = (syscall_handler_t *) sys_getegid, \ - [ __NR_setreuid32 ] = (syscall_handler_t *) sys_setreuid, \ - [ __NR_setregid32 ] = (syscall_handler_t *) sys_setregid, \ - [ __NR_getgroups32 ] = (syscall_handler_t *) sys_getgroups, \ - [ __NR_setgroups32 ] = (syscall_handler_t *) sys_setgroups, \ - [ __NR_fchown32 ] = (syscall_handler_t *) sys_fchown, \ - [ __NR_setresuid32 ] = (syscall_handler_t *) sys_setresuid, \ - [ __NR_getresuid32 ] = (syscall_handler_t *) sys_getresuid, \ - [ __NR_setresgid32 ] = (syscall_handler_t *) sys_setresgid, \ - [ __NR_getresgid32 ] = (syscall_handler_t *) sys_getresgid, \ - [ __NR_chown32 ] = (syscall_handler_t *) sys_chown, \ - [ __NR_setuid32 ] = (syscall_handler_t *) sys_setuid, \ - [ __NR_setgid32 ] = (syscall_handler_t *) sys_setgid, \ - [ __NR_setfsuid32 ] = (syscall_handler_t *) sys_setfsuid, \ - [ __NR_setfsgid32 ] = (syscall_handler_t *) sys_setfsgid, \ - [ __NR_pivot_root ] = (syscall_handler_t *) sys_pivot_root, \ - [ __NR_mincore ] = (syscall_handler_t *) sys_mincore, \ - [ __NR_madvise ] = (syscall_handler_t *) sys_madvise, \ - [ 222 ] = (syscall_handler_t *) sys_ni_syscall, \ - [ 223 ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_set_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_get_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \ - [ 251 ] = (syscall_handler_t *) sys_ni_syscall, \ - [ 285 ] = (syscall_handler_t *) sys_ni_syscall, - -/* 222 doesn't yet have a name in include/asm-i386/unistd.h */ - -#define LAST_ARCH_SYSCALL 285 - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/include/sysdep-ia64/skas_ptrace.h b/arch/um/include/sysdep-ia64/skas_ptrace.h new file mode 100644 index 0000000..25a38e7 --- /dev/null +++ b/arch/um/include/sysdep-ia64/skas_ptrace.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_IA64_SKAS_PTRACE_H +#define __SYSDEP_IA64_SKAS_PTRACE_H + +struct ptrace_faultinfo { + int is_write; + unsigned long addr; +}; + +struct ptrace_ldt { + int func; + void *ptr; + unsigned long bytecount; +}; + +#define PTRACE_LDT 54 + +#endif diff --git a/arch/um/include/sysdep-ppc/skas_ptrace.h b/arch/um/include/sysdep-ppc/skas_ptrace.h new file mode 100644 index 0000000..d9fbbac --- /dev/null +++ b/arch/um/include/sysdep-ppc/skas_ptrace.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_PPC_SKAS_PTRACE_H +#define __SYSDEP_PPC_SKAS_PTRACE_H + +struct ptrace_faultinfo { + int is_write; + unsigned long addr; +}; + +struct ptrace_ldt { + int func; + void *ptr; + unsigned long bytecount; +}; + +#define PTRACE_LDT 54 + +#endif diff --git a/arch/um/include/sysdep-x86_64/faultinfo.h b/arch/um/include/sysdep-x86_64/faultinfo.h new file mode 100644 index 0000000..cb917b0 --- /dev/null +++ b/arch/um/include/sysdep-x86_64/faultinfo.h @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2004 Fujitsu Siemens Computers GmbH + * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com> + * Licensed under the GPL + */ + +#ifndef __FAULTINFO_X86_64_H +#define __FAULTINFO_X86_64_H + +/* this structure contains the full arch-specific faultinfo + * from the traps. + * On i386, ptrace_faultinfo unfortunately doesn't provide + * all the info, since trap_no is missing. + * All common elements are defined at the same position in + * both structures, thus making it easy to copy the + * contents without knowledge about the structure elements. + */ +struct faultinfo { + int error_code; /* in ptrace_faultinfo misleadingly called is_write */ + unsigned long cr2; /* in ptrace_faultinfo called addr */ + int trap_no; /* missing in ptrace_faultinfo */ +}; + +#define FAULT_WRITE(fi) ((fi).error_code & 2) +#define FAULT_ADDRESS(fi) ((fi).cr2) + +#define PTRACE_FULL_FAULTINFO 1 + +#endif diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h index 915c82d..348e8fc 100644 --- a/arch/um/include/sysdep-x86_64/ptrace.h +++ b/arch/um/include/sysdep-x86_64/ptrace.h @@ -9,6 +9,7 @@ #include "uml-config.h" #include "user_constants.h" +#include "sysdep/faultinfo.h" #define MAX_REG_OFFSET (UM_FRAME_SIZE) #define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long)) @@ -83,6 +84,7 @@ union uml_pt_regs { long syscall; unsigned long orig_rax; void *sc; + struct faultinfo faultinfo; } tt; #endif #ifdef UML_CONFIG_MODE_SKAS @@ -90,9 +92,7 @@ union uml_pt_regs { /* XXX */ unsigned long regs[27]; unsigned long fp[65]; - unsigned long fault_addr; - unsigned long fault_type; - unsigned long trap_type; + struct faultinfo faultinfo; long syscall; int is_user; } skas; @@ -241,14 +241,8 @@ struct syscall_args { CHOOSE_MODE(SC_SEGV_IS_FIXABLE(UPT_SC(r)), \ REGS_SEGV_IS_FIXABLE(&r->skas)) -#define UPT_FAULT_ADDR(r) \ - __CHOOSE_MODE(SC_FAULT_ADDR(UPT_SC(r)), REGS_FAULT_ADDR(&r->skas)) - -#define UPT_FAULT_WRITE(r) \ - CHOOSE_MODE(SC_FAULT_WRITE(UPT_SC(r)), REGS_FAULT_WRITE(&r->skas)) - -#define UPT_TRAP(r) __CHOOSE_MODE(SC_TRAP_TYPE(UPT_SC(r)), REGS_TRAP(&r->skas)) -#define UPT_ERR(r) __CHOOSE_MODE(SC_FAULT_TYPE(UPT_SC(r)), REGS_ERR(&r->skas)) +#define UPT_FAULTINFO(r) \ + CHOOSE_MODE((&(r)->tt.faultinfo), (&(r)->skas.faultinfo)) #endif diff --git a/arch/um/include/sysdep-x86_64/sigcontext.h b/arch/um/include/sysdep-x86_64/sigcontext.h index 1e38a54..2a78260 100644 --- a/arch/um/include/sysdep-x86_64/sigcontext.h +++ b/arch/um/include/sysdep-x86_64/sigcontext.h @@ -17,11 +17,12 @@ #define SC_FAULT_ADDR(sc) SC_CR2(sc) #define SC_FAULT_TYPE(sc) SC_ERR(sc) -#define FAULT_WRITE(err) ((err) & 2) - -#define SC_FAULT_WRITE(sc) FAULT_WRITE(SC_FAULT_TYPE(sc)) - -#define SC_TRAP_TYPE(sc) SC_TRAPNO(sc) +#define GET_FAULTINFO_FROM_SC(fi,sc) \ + { \ + (fi).cr2 = SC_CR2(sc); \ + (fi).error_code = SC_ERR(sc); \ + (fi).trap_no = SC_TRAPNO(sc); \ + } /* ptrace expects that, at the start of a system call, %eax contains * -ENOSYS, so this makes it so. @@ -29,8 +30,8 @@ #define SC_START_SYSCALL(sc) do SC_RAX(sc) = -ENOSYS; while(0) -#define SEGV_IS_FIXABLE(trap) ((trap) == 14) -#define SC_SEGV_IS_FIXABLE(sc) SEGV_IS_FIXABLE(SC_TRAP_TYPE(sc)) +/* This is Page Fault */ +#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14) extern unsigned long *sc_sigmask(void *sc_ptr); diff --git a/arch/um/include/sysdep-x86_64/signal.h b/arch/um/include/sysdep-x86_64/signal.h index e5e5275..6142897 100644 --- a/arch/um/include/sysdep-x86_64/signal.h +++ b/arch/um/include/sysdep-x86_64/signal.h @@ -6,6 +6,8 @@ #ifndef __X86_64_SIGNAL_H_ #define __X86_64_SIGNAL_H_ +#define ARCH_SIGHDLR_PARAM int sig + #define ARCH_GET_SIGCONTEXT(sc, sig_addr) \ do { \ struct ucontext *__uc; \ diff --git a/arch/um/include/sysdep-x86_64/skas_ptrace.h b/arch/um/include/sysdep-x86_64/skas_ptrace.h new file mode 100644 index 0000000..95db4be7 --- /dev/null +++ b/arch/um/include/sysdep-x86_64/skas_ptrace.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_X86_64_SKAS_PTRACE_H +#define __SYSDEP_X86_64_SKAS_PTRACE_H + +struct ptrace_faultinfo { + int is_write; + unsigned long addr; +}; + +struct ptrace_ldt { + int func; + void *ptr; + unsigned long bytecount; +}; + +#define PTRACE_LDT 54 + +#endif diff --git a/arch/um/include/sysdep-x86_64/syscalls.h b/arch/um/include/sysdep-x86_64/syscalls.h index b187a41..67923cc 100644 --- a/arch/um/include/sysdep-x86_64/syscalls.h +++ b/arch/um/include/sysdep-x86_64/syscalls.h @@ -26,66 +26,9 @@ extern syscall_handler_t *ia32_sys_call_table[]; extern long old_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff); -extern syscall_handler_t wrap_sys_shmat; extern syscall_handler_t sys_modify_ldt; extern syscall_handler_t sys_arch_prctl; -#define ARCH_SYSCALLS \ - [ __NR_mmap ] = (syscall_handler_t *) old_mmap, \ - [ __NR_select ] = (syscall_handler_t *) sys_select, \ - [ __NR_mincore ] = (syscall_handler_t *) sys_mincore, \ - [ __NR_madvise ] = (syscall_handler_t *) sys_madvise, \ - [ __NR_shmget ] = (syscall_handler_t *) sys_shmget, \ - [ __NR_shmat ] = (syscall_handler_t *) wrap_sys_shmat, \ - [ __NR_shmctl ] = (syscall_handler_t *) sys_shmctl, \ - [ __NR_semop ] = (syscall_handler_t *) sys_semop, \ - [ __NR_semget ] = (syscall_handler_t *) sys_semget, \ - [ __NR_semctl ] = (syscall_handler_t *) sys_semctl, \ - [ __NR_shmdt ] = (syscall_handler_t *) sys_shmdt, \ - [ __NR_msgget ] = (syscall_handler_t *) sys_msgget, \ - [ __NR_msgsnd ] = (syscall_handler_t *) sys_msgsnd, \ - [ __NR_msgrcv ] = (syscall_handler_t *) sys_msgrcv, \ - [ __NR_msgctl ] = (syscall_handler_t *) sys_msgctl, \ - [ __NR_pivot_root ] = (syscall_handler_t *) sys_pivot_root, \ - [ __NR_tuxcall ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_security ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_epoll_ctl_old ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_epoll_wait_old ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_modify_ldt ] = (syscall_handler_t *) sys_modify_ldt, \ - [ __NR_arch_prctl ] = (syscall_handler_t *) sys_arch_prctl, \ - [ __NR_socket ] = (syscall_handler_t *) sys_socket, \ - [ __NR_connect ] = (syscall_handler_t *) sys_connect, \ - [ __NR_accept ] = (syscall_handler_t *) sys_accept, \ - [ __NR_recvfrom ] = (syscall_handler_t *) sys_recvfrom, \ - [ __NR_recvmsg ] = (syscall_handler_t *) sys_recvmsg, \ - [ __NR_sendmsg ] = (syscall_handler_t *) sys_sendmsg, \ - [ __NR_bind ] = (syscall_handler_t *) sys_bind, \ - [ __NR_listen ] = (syscall_handler_t *) sys_listen, \ - [ __NR_getsockname ] = (syscall_handler_t *) sys_getsockname, \ - [ __NR_getpeername ] = (syscall_handler_t *) sys_getpeername, \ - [ __NR_socketpair ] = (syscall_handler_t *) sys_socketpair, \ - [ __NR_sendto ] = (syscall_handler_t *) sys_sendto, \ - [ __NR_shutdown ] = (syscall_handler_t *) sys_shutdown, \ - [ __NR_setsockopt ] = (syscall_handler_t *) sys_setsockopt, \ - [ __NR_getsockopt ] = (syscall_handler_t *) sys_getsockopt, \ - [ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_set_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_get_thread_area ] = (syscall_handler_t *) sys_ni_syscall, \ - [ __NR_semtimedop ] = (syscall_handler_t *) sys_semtimedop, \ - [ 251 ] = (syscall_handler_t *) sys_ni_syscall, - -#define LAST_ARCH_SYSCALL 251 -#define NR_syscalls 1024 +#define NR_syscalls (__NR_syscall_max + 1) #endif - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/include/user_util.h b/arch/um/include/user_util.h index 103cd32..b8c5b8a 100644 --- a/arch/um/include/user_util.h +++ b/arch/um/include/user_util.h @@ -67,7 +67,6 @@ extern void *um_kmalloc(int size); extern int switcheroo(int fd, int prot, void *from, void *to, int size); extern void setup_machinename(char *machine_out); extern void setup_hostinfo(void); -extern void add_arg(char *arg); extern void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int)); extern void init_new_thread_signals(int altstack); extern void do_exec(int old_pid, int new_pid); diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile index dc796c1..9736ca2 100644 --- a/arch/um/kernel/Makefile +++ b/arch/um/kernel/Makefile @@ -4,13 +4,13 @@ # extra-y := vmlinux.lds -clean-files := vmlinux.lds.S config.tmp +clean-files := -obj-y = checksum.o config.o exec_kern.o exitcode.o \ +obj-y = config.o exec_kern.o exitcode.o \ helper.o init_task.o irq.o irq_user.o ksyms.o main.o mem.o mem_user.o \ physmem.o process.o process_kern.o ptrace.o reboot.o resource.o \ sigio_user.o sigio_kern.o signal_kern.o signal_user.o smp.o \ - syscall_kern.o sysrq.o sys_call_table.o tempfile.o time.o time_kern.o \ + syscall_kern.o sysrq.o tempfile.o time.o time_kern.o \ tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o umid.o \ user_util.o @@ -23,18 +23,14 @@ obj-$(CONFIG_SYSCALL_DEBUG) += syscall_user.o obj-$(CONFIG_MODE_TT) += tt/ obj-$(CONFIG_MODE_SKAS) += skas/ -# This needs be compiled with frame pointers regardless of how the rest of the -# kernel is built. -CFLAGS_frame.o := -fno-omit-frame-pointer - user-objs-$(CONFIG_TTY_LOG) += tty_log.o USER_OBJS := $(user-objs-y) config.o helper.o main.o process.o tempfile.o \ - time.o tty_log.o umid.o user_util.o frame.o + time.o tty_log.o umid.o user_util.o include arch/um/scripts/Makefile.rules -targets += config.c +targets := config.c config.tmp # Be careful with the below Sed code - sed is pitfall-rich! # We use sed to lower build requirements, for "embedded" builders for instance. @@ -53,6 +49,7 @@ quiet_cmd_quote2 = QUOTE $@ cmd_quote2 = sed -e '/CONFIG/{' \ -e 's/"CONFIG"\;/""/' \ -e 'r $(obj)/config.tmp' \ - -e 'a""\;' \ + -e 'a \' \ + -e '""\;' \ -e '}' \ $< > $@ diff --git a/arch/um/kernel/checksum.c b/arch/um/kernel/checksum.c index e69b2be..e69de29 100644 --- a/arch/um/kernel/checksum.c +++ b/arch/um/kernel/checksum.c @@ -1,36 +0,0 @@ -#include "asm/uaccess.h" -#include "linux/errno.h" -#include "linux/module.h" - -unsigned int arch_csum_partial(const unsigned char *buff, int len, int sum); - -unsigned int csum_partial(unsigned char *buff, int len, int sum) -{ - return arch_csum_partial(buff, len, sum); -} - -EXPORT_SYMBOL(csum_partial); - -unsigned int csum_partial_copy_to(const unsigned char *src, - unsigned char __user *dst, int len, int sum, - int *err_ptr) -{ - if(copy_to_user(dst, src, len)){ - *err_ptr = -EFAULT; - return(-1); - } - - return(arch_csum_partial(src, len, sum)); -} - -unsigned int csum_partial_copy_from(const unsigned char __user *src, - unsigned char *dst, int len, int sum, - int *err_ptr) -{ - if(copy_from_user(dst, src, len)){ - *err_ptr = -EFAULT; - return(-1); - } - - return arch_csum_partial(dst, len, sum); -} diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index d71e8f0..d44fb52 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -163,7 +163,6 @@ void __init init_IRQ(void) irq_desc[i].handler = &SIGIO_irq_type; enable_irq(i); } - init_irq_signals(0); } /* diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c index b41d339..78d69dc 100644 --- a/arch/um/kernel/ksyms.c +++ b/arch/um/kernel/ksyms.c @@ -10,7 +10,6 @@ #include "linux/spinlock.h" #include "linux/highmem.h" #include "asm/current.h" -#include "asm/delay.h" #include "asm/processor.h" #include "asm/unistd.h" #include "asm/pgalloc.h" @@ -28,8 +27,6 @@ EXPORT_SYMBOL(uml_physmem); EXPORT_SYMBOL(set_signals); EXPORT_SYMBOL(get_signals); EXPORT_SYMBOL(kernel_thread); -EXPORT_SYMBOL(__const_udelay); -EXPORT_SYMBOL(__udelay); EXPORT_SYMBOL(sys_waitpid); EXPORT_SYMBOL(task_size); EXPORT_SYMBOL(flush_tlb_range); diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index f76a269..51f8e5a 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -65,8 +65,6 @@ void init_new_thread_signals(int altstack) SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); set_handler(SIGBUS, (__sighandler_t) sig_handler, flags, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); - set_handler(SIGWINCH, (__sighandler_t) sig_handler, flags, - SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); set_handler(SIGUSR2, (__sighandler_t) sig_handler, flags, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); signal(SIGHUP, SIG_IGN); diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c index 1d719d5..c1adf7b 100644 --- a/arch/um/kernel/process_kern.c +++ b/arch/um/kernel/process_kern.c @@ -115,16 +115,6 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) return(pid); } -void switch_mm(struct mm_struct *prev, struct mm_struct *next, - struct task_struct *tsk) -{ - int cpu = smp_processor_id(); - - if (prev != next) - cpu_clear(cpu, prev->cpu_vm_mask); - cpu_set(cpu, next->cpu_vm_mask); -} - void set_current(void *t) { struct task_struct *task = t; @@ -152,7 +142,6 @@ void release_thread(struct task_struct *task) void exit_thread(void) { - CHOOSE_MODE(exit_thread_tt(), exit_thread_skas()); unprotect_stack((unsigned long) current_thread); } @@ -161,10 +150,6 @@ void *get_current(void) return(current); } -void prepare_to_copy(struct task_struct *tsk) -{ -} - int copy_thread(int nr, unsigned long clone_flags, unsigned long sp, unsigned long stack_top, struct task_struct * p, struct pt_regs *regs) @@ -480,12 +465,21 @@ int singlestepping(void * t) return 2; } +/* + * Only x86 and x86_64 have an arch_align_stack(). + * All other arches have "#define arch_align_stack(x) (x)" + * in their asm/system.h + * As this is included in UML from asm-um/system-generic.h, + * we can use it to behave as the subarch does. + */ +#ifndef arch_align_stack unsigned long arch_align_stack(unsigned long sp) { if (randomize_va_space) sp -= get_random_int() % 8192; return sp & ~0xf; } +#endif /* diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index 3a99ee6..2b75d8d 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -19,15 +19,30 @@ #include "skas_ptrace.h" #include "sysdep/ptrace.h" +static inline void set_singlestepping(struct task_struct *child, int on) +{ + if (on) + child->ptrace |= PT_DTRACE; + else + child->ptrace &= ~PT_DTRACE; + child->thread.singlestep_syscall = 0; + +#ifdef SUBARCH_SET_SINGLESTEPPING + SUBARCH_SET_SINGLESTEPPING(child, on) +#endif + } + /* * Called by kernel/ptrace.c when detaching.. */ void ptrace_disable(struct task_struct *child) { - child->ptrace &= ~PT_DTRACE; - child->thread.singlestep_syscall = 0; + set_singlestepping(child,0); } +extern int peek_user(struct task_struct * child, long addr, long data); +extern int poke_user(struct task_struct * child, long addr, long data); + long sys_ptrace(long request, long pid, long addr, long data) { struct task_struct *child; @@ -67,6 +82,10 @@ long sys_ptrace(long request, long pid, long addr, long data) goto out_tsk; } +#ifdef SUBACH_PTRACE_SPECIAL + SUBARCH_PTRACE_SPECIAL(child,request,addr,data) +#endif + ret = ptrace_check_attach(child, request == PTRACE_KILL); if (ret < 0) goto out_tsk; @@ -87,26 +106,9 @@ long sys_ptrace(long request, long pid, long addr, long data) } /* read the word at location addr in the USER area. */ - case PTRACE_PEEKUSR: { - unsigned long tmp; - - ret = -EIO; - if ((addr & 3) || addr < 0) - break; - - tmp = 0; /* Default return condition */ - if(addr < MAX_REG_OFFSET){ - tmp = getreg(child, addr); - } - else if((addr >= offsetof(struct user, u_debugreg[0])) && - (addr <= offsetof(struct user, u_debugreg[7]))){ - addr -= offsetof(struct user, u_debugreg[0]); - addr = addr >> 2; - tmp = child->thread.arch.debugregs[addr]; - } - ret = put_user(tmp, (unsigned long __user *) data); - break; - } + case PTRACE_PEEKUSR: + ret = peek_user(child, addr, data); + break; /* when I and D space are separate, this will have to be fixed. */ case PTRACE_POKETEXT: /* write the word at location addr. */ @@ -119,35 +121,16 @@ long sys_ptrace(long request, long pid, long addr, long data) break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ - ret = -EIO; - if ((addr & 3) || addr < 0) - break; - - if (addr < MAX_REG_OFFSET) { - ret = putreg(child, addr, data); - break; - } -#if 0 /* XXX x86_64 */ - else if((addr >= offsetof(struct user, u_debugreg[0])) && - (addr <= offsetof(struct user, u_debugreg[7]))){ - addr -= offsetof(struct user, u_debugreg[0]); - addr = addr >> 2; - if((addr == 4) || (addr == 5)) break; - child->thread.arch.debugregs[addr] = data; - ret = 0; - } -#endif - - break; + ret = poke_user(child, addr, data); + break; case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ case PTRACE_CONT: { /* restart after signal. */ ret = -EIO; - if ((unsigned long) data > _NSIG) + if (!valid_signal(data)) break; - child->ptrace &= ~PT_DTRACE; - child->thread.singlestep_syscall = 0; + set_singlestepping(child, 0); if (request == PTRACE_SYSCALL) { set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); } @@ -170,8 +153,7 @@ long sys_ptrace(long request, long pid, long addr, long data) if (child->exit_state == EXIT_ZOMBIE) /* already dead */ break; - child->ptrace &= ~PT_DTRACE; - child->thread.singlestep_syscall = 0; + set_singlestepping(child, 0); child->exit_code = SIGKILL; wake_up_process(child); break; @@ -179,11 +161,10 @@ long sys_ptrace(long request, long pid, long addr, long data) case PTRACE_SINGLESTEP: { /* set the trap flag. */ ret = -EIO; - if ((unsigned long) data > _NSIG) + if (!valid_signal(data)) break; clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->ptrace |= PT_DTRACE; - child->thread.singlestep_syscall = 0; + set_singlestepping(child, 1); child->exit_code = data; /* give it a chance to run. */ wake_up_process(child); @@ -250,23 +231,19 @@ long sys_ptrace(long request, long pid, long addr, long data) break; #endif case PTRACE_FAULTINFO: { - struct ptrace_faultinfo fault; - - fault = ((struct ptrace_faultinfo) - { .is_write = child->thread.err, - .addr = child->thread.cr2 }); - ret = copy_to_user((unsigned long __user *) data, &fault, - sizeof(fault)); + /* Take the info from thread->arch->faultinfo, + * but transfer max. sizeof(struct ptrace_faultinfo). + * On i386, ptrace_faultinfo is smaller! + */ + ret = copy_to_user((unsigned long __user *) data, + &child->thread.arch.faultinfo, + sizeof(struct ptrace_faultinfo)); if(ret) break; break; } - case PTRACE_SIGPENDING: - ret = copy_to_user((unsigned long __user *) data, - &child->pending.signal, - sizeof(child->pending.signal)); - break; +#ifdef PTRACE_LDT case PTRACE_LDT: { struct ptrace_ldt ldt; @@ -282,6 +259,7 @@ long sys_ptrace(long request, long pid, long addr, long data) ret = -EIO; break; } +#endif #ifdef CONFIG_PROC_MM case PTRACE_SWITCH_MM: { struct mm_struct *old = child->mm; @@ -337,15 +315,18 @@ void syscall_trace(union uml_pt_regs *regs, int entryexit) if (unlikely(current->audit_context)) { if (!entryexit) - audit_syscall_entry(current, - UPT_SYSCALL_NR(®s->regs), - UPT_SYSCALL_ARG1(®s->regs), - UPT_SYSCALL_ARG2(®s->regs), - UPT_SYSCALL_ARG3(®s->regs), - UPT_SYSCALL_ARG4(®s->regs)); - else - audit_syscall_exit(current, - UPT_SYSCALL_RET(®s->regs)); + audit_syscall_entry(current, + HOST_AUDIT_ARCH, + UPT_SYSCALL_NR(regs), + UPT_SYSCALL_ARG1(regs), + UPT_SYSCALL_ARG2(regs), + UPT_SYSCALL_ARG3(regs), + UPT_SYSCALL_ARG4(regs)); + else { + int res = UPT_SYSCALL_RET(regs); + audit_syscall_exit(current, AUDITSC_RESULT(res), + res); + } } /* Fake a debug trap */ diff --git a/arch/um/kernel/sigio_user.c b/arch/um/kernel/sigio_user.c index 668df13..e892189 100644 --- a/arch/um/kernel/sigio_user.c +++ b/arch/um/kernel/sigio_user.c @@ -182,6 +182,7 @@ static int write_sigio_thread(void *unused) int i, n, respond_fd; char c; + signal(SIGWINCH, SIG_IGN); fds = ¤t_poll; while(1){ n = poll(fds->poll, fds->used, -1); diff --git a/arch/um/kernel/skas/include/mode_kern-skas.h b/arch/um/kernel/skas/include/mode_kern-skas.h index 94c5649..e484900 100644 --- a/arch/um/kernel/skas/include/mode_kern-skas.h +++ b/arch/um/kernel/skas/include/mode_kern-skas.h @@ -18,7 +18,6 @@ extern int copy_thread_skas(int nr, unsigned long clone_flags, unsigned long sp, unsigned long stack_top, struct task_struct *p, struct pt_regs *regs); extern void release_thread_skas(struct task_struct *task); -extern void exit_thread_skas(void); extern void initial_thread_cb_skas(void (*proc)(void *), void *arg); extern void init_idle_skas(void); extern void flush_tlb_kernel_range_skas(unsigned long start, diff --git a/arch/um/kernel/skas/include/skas.h b/arch/um/kernel/skas/include/skas.h index f0702c2..96b51db 100644 --- a/arch/um/kernel/skas/include/skas.h +++ b/arch/um/kernel/skas/include/skas.h @@ -27,9 +27,10 @@ extern void map(int fd, unsigned long virt, unsigned long len, int r, int w, extern int unmap(int fd, void *addr, unsigned long len); extern int protect(int fd, unsigned long addr, unsigned long len, int r, int w, int x); -extern void user_signal(int sig, union uml_pt_regs *regs); +extern void user_signal(int sig, union uml_pt_regs *regs, int pid); extern int new_mm(int from); extern void start_userspace(int cpu); +extern void get_skas_faultinfo(int pid, struct faultinfo * fi); extern long execute_syscall_skas(void *r); #endif diff --git a/arch/um/kernel/skas/include/uaccess-skas.h b/arch/um/kernel/skas/include/uaccess-skas.h index 11986c9..cd6c280 100644 --- a/arch/um/kernel/skas/include/uaccess-skas.h +++ b/arch/um/kernel/skas/include/uaccess-skas.h @@ -19,7 +19,7 @@ ((unsigned long) (addr) + (size) >= (unsigned long)(addr)))) static inline int verify_area_skas(int type, const void * addr, - unsigned long size) + unsigned long size) { return(access_ok_skas(type, addr, size) ? 0 : -EFAULT); } diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c index b4ffaaa..773cd2b 100644 --- a/arch/um/kernel/skas/process.c +++ b/arch/um/kernel/skas/process.c @@ -4,6 +4,7 @@ */ #include <stdlib.h> +#include <string.h> #include <unistd.h> #include <errno.h> #include <signal.h> @@ -27,27 +28,37 @@ #include "chan_user.h" #include "signal_user.h" #include "registers.h" +#include "process.h" int is_skas_winch(int pid, int fd, void *data) { - if(pid != os_getpid()) + if(pid != os_getpgrp()) return(0); register_winch_irq(-1, fd, -1, data); return(1); } -static void handle_segv(int pid) +void get_skas_faultinfo(int pid, struct faultinfo * fi) { - struct ptrace_faultinfo fault; int err; - err = ptrace(PTRACE_FAULTINFO, pid, 0, &fault); + err = ptrace(PTRACE_FAULTINFO, pid, 0, fi); if(err) - panic("handle_segv - PTRACE_FAULTINFO failed, errno = %d\n", - errno); + panic("get_skas_faultinfo - PTRACE_FAULTINFO failed, " + "errno = %d\n", errno); + + /* Special handling for i386, which has different structs */ + if (sizeof(struct ptrace_faultinfo) < sizeof(struct faultinfo)) + memset((char *)fi + sizeof(struct ptrace_faultinfo), 0, + sizeof(struct faultinfo) - + sizeof(struct ptrace_faultinfo)); +} - segv(fault.addr, 0, FAULT_WRITE(fault.is_write), 1, NULL); +static void handle_segv(int pid, union uml_pt_regs * regs) +{ + get_skas_faultinfo(pid, ®s->skas.faultinfo); + segv(regs->skas.faultinfo, 0, 1, NULL); } /*To use the same value of using_sysemu as the caller, ask it that value (in local_using_sysemu)*/ @@ -163,7 +174,7 @@ void userspace(union uml_pt_regs *regs) if(WIFSTOPPED(status)){ switch(WSTOPSIG(status)){ case SIGSEGV: - handle_segv(pid); + handle_segv(pid, regs); break; case SIGTRAP + 0x80: handle_trap(pid, regs, local_using_sysemu); @@ -177,7 +188,7 @@ void userspace(union uml_pt_regs *regs) case SIGBUS: case SIGFPE: case SIGWINCH: - user_signal(WSTOPSIG(status), regs); + user_signal(WSTOPSIG(status), regs, pid); break; default: printk("userspace - child stopped with signal " @@ -190,6 +201,11 @@ void userspace(union uml_pt_regs *regs) } } } +#define INIT_JMP_NEW_THREAD 0 +#define INIT_JMP_REMOVE_SIGSTACK 1 +#define INIT_JMP_CALLBACK 2 +#define INIT_JMP_HALT 3 +#define INIT_JMP_REBOOT 4 void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr, void (*handler)(int)) @@ -225,7 +241,7 @@ void thread_wait(void *sw, void *fb) *switch_buf = &buf; fork_buf = fb; if(sigsetjmp(buf, 1) == 0) - siglongjmp(*fork_buf, 1); + siglongjmp(*fork_buf, INIT_JMP_REMOVE_SIGSTACK); } void switch_threads(void *me, void *next) @@ -249,23 +265,31 @@ int start_idle_thread(void *stack, void *switch_buf_ptr, void **fork_buf_ptr) sigjmp_buf **switch_buf = switch_buf_ptr; int n; + set_handler(SIGWINCH, (__sighandler_t) sig_handler, + SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGALRM, + SIGVTALRM, -1); + *fork_buf_ptr = &initial_jmpbuf; n = sigsetjmp(initial_jmpbuf, 1); - if(n == 0) - new_thread_proc((void *) stack, new_thread_handler); - else if(n == 1) - remove_sigstack(); - else if(n == 2){ + switch(n){ + case INIT_JMP_NEW_THREAD: + new_thread_proc((void *) stack, new_thread_handler); + break; + case INIT_JMP_REMOVE_SIGSTACK: + remove_sigstack(); + break; + case INIT_JMP_CALLBACK: (*cb_proc)(cb_arg); siglongjmp(*cb_back, 1); - } - else if(n == 3){ + break; + case INIT_JMP_HALT: kmalloc_ok = 0; return(0); - } - else if(n == 4){ + case INIT_JMP_REBOOT: kmalloc_ok = 0; return(1); + default: + panic("Bad sigsetjmp return in start_idle_thread - %d\n", n); } siglongjmp(**switch_buf, 1); } @@ -290,7 +314,7 @@ void initial_thread_cb_skas(void (*proc)(void *), void *arg) block_signals(); if(sigsetjmp(here, 1) == 0) - siglongjmp(initial_jmpbuf, 2); + siglongjmp(initial_jmpbuf, INIT_JMP_CALLBACK); unblock_signals(); cb_proc = NULL; @@ -301,13 +325,13 @@ void initial_thread_cb_skas(void (*proc)(void *), void *arg) void halt_skas(void) { block_signals(); - siglongjmp(initial_jmpbuf, 3); + siglongjmp(initial_jmpbuf, INIT_JMP_HALT); } void reboot_skas(void) { block_signals(); - siglongjmp(initial_jmpbuf, 4); + siglongjmp(initial_jmpbuf, INIT_JMP_REBOOT); } void switch_mm_skas(int mm_fd) diff --git a/arch/um/kernel/skas/process_kern.c b/arch/um/kernel/skas/process_kern.c index 5d096ea..ab5d327 100644 --- a/arch/um/kernel/skas/process_kern.c +++ b/arch/um/kernel/skas/process_kern.c @@ -83,10 +83,6 @@ void release_thread_skas(struct task_struct *task) { } -void exit_thread_skas(void) -{ -} - void fork_handler(int sig) { change_sig(SIGUSR1, 1); diff --git a/arch/um/kernel/skas/trap_user.c b/arch/um/kernel/skas/trap_user.c index 8e9b46d..0dee1d9 100644 --- a/arch/um/kernel/skas/trap_user.c +++ b/arch/um/kernel/skas/trap_user.c @@ -5,12 +5,15 @@ #include <signal.h> #include <errno.h> -#include "sysdep/ptrace.h" #include "signal_user.h" #include "user_util.h" #include "kern_util.h" #include "task.h" #include "sigcontext.h" +#include "skas.h" +#include "ptrace_user.h" +#include "sysdep/ptrace.h" +#include "sysdep/ptrace_user.h" void sig_handler_common_skas(int sig, void *sc_ptr) { @@ -31,9 +34,11 @@ void sig_handler_common_skas(int sig, void *sc_ptr) r = &TASK_REGS(get_current())->skas; save_user = r->is_user; r->is_user = 0; - r->fault_addr = SC_FAULT_ADDR(sc); - r->fault_type = SC_FAULT_TYPE(sc); - r->trap_type = SC_TRAP_TYPE(sc); + if ( sig == SIGFPE || sig == SIGSEGV || + sig == SIGBUS || sig == SIGILL || + sig == SIGTRAP ) { + GET_FAULTINFO_FROM_SC(r->faultinfo, sc); + } change_sig(SIGUSR1, 1); info = &sig_info[sig]; @@ -45,14 +50,17 @@ void sig_handler_common_skas(int sig, void *sc_ptr) r->is_user = save_user; } -void user_signal(int sig, union uml_pt_regs *regs) +extern int ptrace_faultinfo; + +void user_signal(int sig, union uml_pt_regs *regs, int pid) { struct signal_info *info; + int segv = ((sig == SIGFPE) || (sig == SIGSEGV) || (sig == SIGBUS) || + (sig == SIGILL) || (sig == SIGTRAP)); regs->skas.is_user = 1; - regs->skas.fault_addr = 0; - regs->skas.fault_type = 0; - regs->skas.trap_type = 0; + if (segv) + get_skas_faultinfo(pid, ®s->skas.faultinfo); info = &sig_info[sig]; (*info->handler)(sig, regs); diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c index 7575ec4..7519528 100644 --- a/arch/um/kernel/skas/uaccess.c +++ b/arch/um/kernel/skas/uaccess.c @@ -3,6 +3,7 @@ * Licensed under the GPL */ +#include "linux/compiler.h" #include "linux/stddef.h" #include "linux/kernel.h" #include "linux/string.h" @@ -28,9 +29,12 @@ static unsigned long maybe_map(unsigned long virt, int is_write) if(IS_ERR(phys) || (is_write && !pte_write(pte))){ err = handle_page_fault(virt, 0, is_write, 1, &dummy_code); if(err) - return(0); + return(-1UL); phys = um_virt_to_phys(current, virt, NULL); } + if(IS_ERR(phys)) + phys = (void *) -1; + return((unsigned long) phys); } @@ -41,7 +45,7 @@ static int do_op(unsigned long addr, int len, int is_write, int n; addr = maybe_map(addr, is_write); - if(addr == -1) + if(addr == -1UL) return(-1); page = phys_to_page(addr); @@ -61,8 +65,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr) void *arg; int *res; - /* Some old gccs recognize __va_copy, but not va_copy */ - __va_copy(args, *(va_list *)arg_ptr); + va_copy(args, *(va_list *)arg_ptr); addr = va_arg(args, unsigned long); len = va_arg(args, int); is_write = va_arg(args, int); diff --git a/arch/um/kernel/skas/util/Makefile b/arch/um/kernel/skas/util/Makefile index 17f5909..f7b7eba 100644 --- a/arch/um/kernel/skas/util/Makefile +++ b/arch/um/kernel/skas/util/Makefile @@ -2,3 +2,4 @@ hostprogs-y := mk_ptregs always := $(hostprogs-y) mk_ptregs-objs := mk_ptregs-$(SUBARCH).o +HOSTCFLAGS_mk_ptregs-$(SUBARCH).o := -I$(objtree)/arch/um diff --git a/arch/um/kernel/skas/util/mk_ptregs-i386.c b/arch/um/kernel/skas/util/mk_ptregs-i386.c index 0788dd0..1f96e1e 100644 --- a/arch/um/kernel/skas/util/mk_ptregs-i386.c +++ b/arch/um/kernel/skas/util/mk_ptregs-i386.c @@ -1,8 +1,7 @@ #include <stdio.h> -#include <asm/ptrace.h> -#include <asm/user.h> +#include <user-offsets.h> -#define PRINT_REG(name, val) printf("#define HOST_%s %d\n", (name), (val)) +#define SHOW(name) printf("#define %s %d\n", #name, name) int main(int argc, char **argv) { @@ -12,28 +11,27 @@ int main(int argc, char **argv) printf("#ifndef __SKAS_PT_REGS_\n"); printf("#define __SKAS_PT_REGS_\n"); printf("\n"); - printf("#define HOST_FRAME_SIZE %d\n", FRAME_SIZE); - printf("#define HOST_FP_SIZE %d\n", - sizeof(struct user_i387_struct) / sizeof(unsigned long)); - printf("#define HOST_XFP_SIZE %d\n", - sizeof(struct user_fxsr_struct) / sizeof(unsigned long)); + SHOW(HOST_FRAME_SIZE); + SHOW(HOST_FP_SIZE); + SHOW(HOST_XFP_SIZE); + + SHOW(HOST_IP); + SHOW(HOST_SP); + SHOW(HOST_EFLAGS); + SHOW(HOST_EAX); + SHOW(HOST_EBX); + SHOW(HOST_ECX); + SHOW(HOST_EDX); + SHOW(HOST_ESI); + SHOW(HOST_EDI); + SHOW(HOST_EBP); + SHOW(HOST_CS); + SHOW(HOST_SS); + SHOW(HOST_DS); + SHOW(HOST_FS); + SHOW(HOST_ES); + SHOW(HOST_GS); - PRINT_REG("IP", EIP); - PRINT_REG("SP", UESP); - PRINT_REG("EFLAGS", EFL); - PRINT_REG("EAX", EAX); - PRINT_REG("EBX", EBX); - PRINT_REG("ECX", ECX); - PRINT_REG("EDX", EDX); - PRINT_REG("ESI", ESI); - PRINT_REG("EDI", EDI); - PRINT_REG("EBP", EBP); - PRINT_REG("CS", CS); - PRINT_REG("SS", SS); - PRINT_REG("DS", DS); - PRINT_REG("FS", FS); - PRINT_REG("ES", ES); - PRINT_REG("GS", GS); printf("\n"); printf("#endif\n"); return(0); diff --git a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c b/arch/um/kernel/skas/util/mk_ptregs-x86_64.c index 67aee92..5fccbfe3 100644 --- a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c +++ b/arch/um/kernel/skas/util/mk_ptregs-x86_64.c @@ -5,11 +5,10 @@ */ #include <stdio.h> -#define __FRAME_OFFSETS -#include <asm/ptrace.h> +#include <user-offsets.h> -#define PRINT_REG(name, val) \ - printf("#define HOST_%s (%d / sizeof(unsigned long))\n", (name), (val)) +#define SHOW(name) \ + printf("#define %s (%d / sizeof(unsigned long))\n", #name, name) int main(int argc, char **argv) { @@ -18,36 +17,35 @@ int main(int argc, char **argv) printf("\n"); printf("#ifndef __SKAS_PT_REGS_\n"); printf("#define __SKAS_PT_REGS_\n"); - printf("#define HOST_FRAME_SIZE (%d / sizeof(unsigned long))\n", - FRAME_SIZE); - PRINT_REG("RBX", RBX); - PRINT_REG("RCX", RCX); - PRINT_REG("RDI", RDI); - PRINT_REG("RSI", RSI); - PRINT_REG("RDX", RDX); - PRINT_REG("RBP", RBP); - PRINT_REG("RAX", RAX); - PRINT_REG("R8", R8); - PRINT_REG("R9", R9); - PRINT_REG("R10", R10); - PRINT_REG("R11", R11); - PRINT_REG("R12", R12); - PRINT_REG("R13", R13); - PRINT_REG("R14", R14); - PRINT_REG("R15", R15); - PRINT_REG("ORIG_RAX", ORIG_RAX); - PRINT_REG("CS", CS); - PRINT_REG("SS", SS); - PRINT_REG("EFLAGS", EFLAGS); + SHOW(HOST_FRAME_SIZE); + SHOW(HOST_RBX); + SHOW(HOST_RCX); + SHOW(HOST_RDI); + SHOW(HOST_RSI); + SHOW(HOST_RDX); + SHOW(HOST_RBP); + SHOW(HOST_RAX); + SHOW(HOST_R8); + SHOW(HOST_R9); + SHOW(HOST_R10); + SHOW(HOST_R11); + SHOW(HOST_R12); + SHOW(HOST_R13); + SHOW(HOST_R14); + SHOW(HOST_R15); + SHOW(HOST_ORIG_RAX); + SHOW(HOST_CS); + SHOW(HOST_SS); + SHOW(HOST_EFLAGS); #if 0 - PRINT_REG("FS", FS); - PRINT_REG("GS", GS); - PRINT_REG("DS", DS); - PRINT_REG("ES", ES); + SHOW(HOST_FS); + SHOW(HOST_GS); + SHOW(HOST_DS); + SHOW(HOST_ES); #endif - PRINT_REG("IP", RIP); - PRINT_REG("SP", RSP); + SHOW(HOST_IP); + SHOW(HOST_SP); printf("#define HOST_FP_SIZE 0\n"); printf("#define HOST_XFP_SIZE 0\n"); printf("\n"); diff --git a/arch/um/kernel/sys_call_table.c b/arch/um/kernel/sys_call_table.c deleted file mode 100644 index 7fc06c8..0000000 --- a/arch/um/kernel/sys_call_table.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - * Copyright (C) 2000 Jeff Dike (jdike@karaya.com) - * Copyright 2003 PathScale, Inc. - * Licensed under the GPL - */ - -#include "linux/config.h" -#include "linux/unistd.h" -#include "linux/sys.h" -#include "linux/swap.h" -#include "linux/syscalls.h" -#include "linux/sysctl.h" -#include "asm/signal.h" -#include "sysdep/syscalls.h" -#include "kern_util.h" - -#ifdef CONFIG_NFSD -#define NFSSERVCTL sys_nfsservctl -#else -#define NFSSERVCTL sys_ni_syscall -#endif - -#define LAST_GENERIC_SYSCALL __NR_keyctl - -#if LAST_GENERIC_SYSCALL > LAST_ARCH_SYSCALL -#define LAST_SYSCALL LAST_GENERIC_SYSCALL -#else -#define LAST_SYSCALL LAST_ARCH_SYSCALL -#endif - -extern syscall_handler_t sys_fork; -extern syscall_handler_t sys_execve; -extern syscall_handler_t um_time; -extern syscall_handler_t um_stime; -extern syscall_handler_t sys_pipe; -extern syscall_handler_t sys_olduname; -extern syscall_handler_t sys_sigaction; -extern syscall_handler_t sys_sigsuspend; -extern syscall_handler_t old_readdir; -extern syscall_handler_t sys_uname; -extern syscall_handler_t sys_ipc; -extern syscall_handler_t sys_sigreturn; -extern syscall_handler_t sys_clone; -extern syscall_handler_t sys_rt_sigreturn; -extern syscall_handler_t sys_sigaltstack; -extern syscall_handler_t sys_vfork; -extern syscall_handler_t old_select; -extern syscall_handler_t sys_modify_ldt; -extern syscall_handler_t sys_rt_sigsuspend; -extern syscall_handler_t sys_mbind; -extern syscall_handler_t sys_get_mempolicy; -extern syscall_handler_t sys_set_mempolicy; -extern syscall_handler_t sys_sys_setaltroot; - -syscall_handler_t *sys_call_table[] = { - [ __NR_restart_syscall ] = (syscall_handler_t *) sys_restart_syscall, - [ __NR_exit ] = (syscall_handler_t *) sys_exit, - [ __NR_fork ] = (syscall_handler_t *) sys_fork, - [ __NR_read ] = (syscall_handler_t *) sys_read, - [ __NR_write ] = (syscall_handler_t *) sys_write, - - /* These three are declared differently in asm/unistd.h */ - [ __NR_open ] = (syscall_handler_t *) sys_open, - [ __NR_close ] = (syscall_handler_t *) sys_close, - [ __NR_creat ] = (syscall_handler_t *) sys_creat, - [ __NR_link ] = (syscall_handler_t *) sys_link, - [ __NR_unlink ] = (syscall_handler_t *) sys_unlink, - [ __NR_execve ] = (syscall_handler_t *) sys_execve, - - /* declared differently in kern_util.h */ - [ __NR_chdir ] = (syscall_handler_t *) sys_chdir, - [ __NR_time ] = um_time, - [ __NR_mknod ] = (syscall_handler_t *) sys_mknod, - [ __NR_chmod ] = (syscall_handler_t *) sys_chmod, - [ __NR_lchown ] = (syscall_handler_t *) sys_lchown16, - [ __NR_lseek ] = (syscall_handler_t *) sys_lseek, - [ __NR_getpid ] = (syscall_handler_t *) sys_getpid, - [ __NR_mount ] = (syscall_handler_t *) sys_mount, - [ __NR_setuid ] = (syscall_handler_t *) sys_setuid16, - [ __NR_getuid ] = (syscall_handler_t *) sys_getuid16, - [ __NR_ptrace ] = (syscall_handler_t *) sys_ptrace, - [ __NR_alarm ] = (syscall_handler_t *) sys_alarm, - [ __NR_pause ] = (syscall_handler_t *) sys_pause, - [ __NR_utime ] = (syscall_handler_t *) sys_utime, - [ __NR_access ] = (syscall_handler_t *) sys_access, - [ __NR_sync ] = (syscall_handler_t *) sys_sync, - [ __NR_kill ] = (syscall_handler_t *) sys_kill, - [ __NR_rename ] = (syscall_handler_t *) sys_rename, - [ __NR_mkdir ] = (syscall_handler_t *) sys_mkdir, - [ __NR_rmdir ] = (syscall_handler_t *) sys_rmdir, - - /* Declared differently in asm/unistd.h */ - [ __NR_dup ] = (syscall_handler_t *) sys_dup, - [ __NR_pipe ] = (syscall_handler_t *) sys_pipe, - [ __NR_times ] = (syscall_handler_t *) sys_times, - [ __NR_brk ] = (syscall_handler_t *) sys_brk, - [ __NR_setgid ] = (syscall_handler_t *) sys_setgid16, - [ __NR_getgid ] = (syscall_handler_t *) sys_getgid16, - [ __NR_geteuid ] = (syscall_handler_t *) sys_geteuid16, - [ __NR_getegid ] = (syscall_handler_t *) sys_getegid16, - [ __NR_acct ] = (syscall_handler_t *) sys_acct, - [ __NR_umount2 ] = (syscall_handler_t *) sys_umount, - [ __NR_ioctl ] = (syscall_handler_t *) sys_ioctl, - [ __NR_fcntl ] = (syscall_handler_t *) sys_fcntl, - [ __NR_setpgid ] = (syscall_handler_t *) sys_setpgid, - [ __NR_umask ] = (syscall_handler_t *) sys_umask, - [ __NR_chroot ] = (syscall_handler_t *) sys_chroot, - [ __NR_ustat ] = (syscall_handler_t *) sys_ustat, - [ __NR_dup2 ] = (syscall_handler_t *) sys_dup2, - [ __NR_getppid ] = (syscall_handler_t *) sys_getppid, - [ __NR_getpgrp ] = (syscall_handler_t *) sys_getpgrp, - [ __NR_setsid ] = (syscall_handler_t *) sys_setsid, - [ __NR_setreuid ] = (syscall_handler_t *) sys_setreuid16, - [ __NR_setregid ] = (syscall_handler_t *) sys_setregid16, - [ __NR_sethostname ] = (syscall_handler_t *) sys_sethostname, - [ __NR_setrlimit ] = (syscall_handler_t *) sys_setrlimit, - [ __NR_getrlimit ] = (syscall_handler_t *) sys_old_getrlimit, - [ __NR_getrusage ] = (syscall_handler_t *) sys_getrusage, - [ __NR_gettimeofday ] = (syscall_handler_t *) sys_gettimeofday, - [ __NR_settimeofday ] = (syscall_handler_t *) sys_settimeofday, - [ __NR_getgroups ] = (syscall_handler_t *) sys_getgroups16, - [ __NR_setgroups ] = (syscall_handler_t *) sys_setgroups16, - [ __NR_symlink ] = (syscall_handler_t *) sys_symlink, - [ __NR_readlink ] = (syscall_handler_t *) sys_readlink, - [ __NR_uselib ] = (syscall_handler_t *) sys_uselib, - [ __NR_swapon ] = (syscall_handler_t *) sys_swapon, - [ __NR_reboot ] = (syscall_handler_t *) sys_reboot, - [ __NR_munmap ] = (syscall_handler_t *) sys_munmap, - [ __NR_truncate ] = (syscall_handler_t *) sys_truncate, - [ __NR_ftruncate ] = (syscall_handler_t *) sys_ftruncate, - [ __NR_fchmod ] = (syscall_handler_t *) sys_fchmod, - [ __NR_fchown ] = (syscall_handler_t *) sys_fchown16, - [ __NR_getpriority ] = (syscall_handler_t *) sys_getpriority, - [ __NR_setpriority ] = (syscall_handler_t *) sys_setpriority, - [ __NR_statfs ] = (syscall_handler_t *) sys_statfs, - [ __NR_fstatfs ] = (syscall_handler_t *) sys_fstatfs, - [ __NR_ioperm ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_syslog ] = (syscall_handler_t *) sys_syslog, - [ __NR_setitimer ] = (syscall_handler_t *) sys_setitimer, - [ __NR_getitimer ] = (syscall_handler_t *) sys_getitimer, - [ __NR_stat ] = (syscall_handler_t *) sys_newstat, - [ __NR_lstat ] = (syscall_handler_t *) sys_newlstat, - [ __NR_fstat ] = (syscall_handler_t *) sys_newfstat, - [ __NR_vhangup ] = (syscall_handler_t *) sys_vhangup, - [ __NR_wait4 ] = (syscall_handler_t *) sys_wait4, - [ __NR_swapoff ] = (syscall_handler_t *) sys_swapoff, - [ __NR_sysinfo ] = (syscall_handler_t *) sys_sysinfo, - [ __NR_fsync ] = (syscall_handler_t *) sys_fsync, - [ __NR_clone ] = (syscall_handler_t *) sys_clone, - [ __NR_setdomainname ] = (syscall_handler_t *) sys_setdomainname, - [ __NR_uname ] = (syscall_handler_t *) sys_newuname, - [ __NR_adjtimex ] = (syscall_handler_t *) sys_adjtimex, - [ __NR_mprotect ] = (syscall_handler_t *) sys_mprotect, - [ __NR_create_module ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_init_module ] = (syscall_handler_t *) sys_init_module, - [ __NR_delete_module ] = (syscall_handler_t *) sys_delete_module, - [ __NR_get_kernel_syms ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_quotactl ] = (syscall_handler_t *) sys_quotactl, - [ __NR_getpgid ] = (syscall_handler_t *) sys_getpgid, - [ __NR_fchdir ] = (syscall_handler_t *) sys_fchdir, - [ __NR_sysfs ] = (syscall_handler_t *) sys_sysfs, - [ __NR_personality ] = (syscall_handler_t *) sys_personality, - [ __NR_afs_syscall ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_setfsuid ] = (syscall_handler_t *) sys_setfsuid16, - [ __NR_setfsgid ] = (syscall_handler_t *) sys_setfsgid16, - [ __NR_getdents ] = (syscall_handler_t *) sys_getdents, - [ __NR_flock ] = (syscall_handler_t *) sys_flock, - [ __NR_msync ] = (syscall_handler_t *) sys_msync, - [ __NR_readv ] = (syscall_handler_t *) sys_readv, - [ __NR_writev ] = (syscall_handler_t *) sys_writev, - [ __NR_getsid ] = (syscall_handler_t *) sys_getsid, - [ __NR_fdatasync ] = (syscall_handler_t *) sys_fdatasync, - [ __NR__sysctl ] = (syscall_handler_t *) sys_sysctl, - [ __NR_mlock ] = (syscall_handler_t *) sys_mlock, - [ __NR_munlock ] = (syscall_handler_t *) sys_munlock, - [ __NR_mlockall ] = (syscall_handler_t *) sys_mlockall, - [ __NR_munlockall ] = (syscall_handler_t *) sys_munlockall, - [ __NR_sched_setparam ] = (syscall_handler_t *) sys_sched_setparam, - [ __NR_sched_getparam ] = (syscall_handler_t *) sys_sched_getparam, - [ __NR_sched_setscheduler ] = (syscall_handler_t *) sys_sched_setscheduler, - [ __NR_sched_getscheduler ] = (syscall_handler_t *) sys_sched_getscheduler, - [ __NR_sched_yield ] = (syscall_handler_t *) yield, - [ __NR_sched_get_priority_max ] = (syscall_handler_t *) sys_sched_get_priority_max, - [ __NR_sched_get_priority_min ] = (syscall_handler_t *) sys_sched_get_priority_min, - [ __NR_sched_rr_get_interval ] = (syscall_handler_t *) sys_sched_rr_get_interval, - [ __NR_nanosleep ] = (syscall_handler_t *) sys_nanosleep, - [ __NR_mremap ] = (syscall_handler_t *) sys_mremap, - [ __NR_setresuid ] = (syscall_handler_t *) sys_setresuid16, - [ __NR_getresuid ] = (syscall_handler_t *) sys_getresuid16, - [ __NR_query_module ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_poll ] = (syscall_handler_t *) sys_poll, - [ __NR_nfsservctl ] = (syscall_handler_t *) NFSSERVCTL, - [ __NR_setresgid ] = (syscall_handler_t *) sys_setresgid16, - [ __NR_getresgid ] = (syscall_handler_t *) sys_getresgid16, - [ __NR_prctl ] = (syscall_handler_t *) sys_prctl, - [ __NR_rt_sigreturn ] = (syscall_handler_t *) sys_rt_sigreturn, - [ __NR_rt_sigaction ] = (syscall_handler_t *) sys_rt_sigaction, - [ __NR_rt_sigprocmask ] = (syscall_handler_t *) sys_rt_sigprocmask, - [ __NR_rt_sigpending ] = (syscall_handler_t *) sys_rt_sigpending, - [ __NR_rt_sigtimedwait ] = (syscall_handler_t *) sys_rt_sigtimedwait, - [ __NR_rt_sigqueueinfo ] = (syscall_handler_t *) sys_rt_sigqueueinfo, - [ __NR_rt_sigsuspend ] = (syscall_handler_t *) sys_rt_sigsuspend, - [ __NR_pread64 ] = (syscall_handler_t *) sys_pread64, - [ __NR_pwrite64 ] = (syscall_handler_t *) sys_pwrite64, - [ __NR_chown ] = (syscall_handler_t *) sys_chown16, - [ __NR_getcwd ] = (syscall_handler_t *) sys_getcwd, - [ __NR_capget ] = (syscall_handler_t *) sys_capget, - [ __NR_capset ] = (syscall_handler_t *) sys_capset, - [ __NR_sigaltstack ] = (syscall_handler_t *) sys_sigaltstack, - [ __NR_sendfile ] = (syscall_handler_t *) sys_sendfile, - [ __NR_getpmsg ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_putpmsg ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_vfork ] = (syscall_handler_t *) sys_vfork, - [ __NR_getdents64 ] = (syscall_handler_t *) sys_getdents64, - [ __NR_gettid ] = (syscall_handler_t *) sys_gettid, - [ __NR_readahead ] = (syscall_handler_t *) sys_readahead, - [ __NR_setxattr ] = (syscall_handler_t *) sys_setxattr, - [ __NR_lsetxattr ] = (syscall_handler_t *) sys_lsetxattr, - [ __NR_fsetxattr ] = (syscall_handler_t *) sys_fsetxattr, - [ __NR_getxattr ] = (syscall_handler_t *) sys_getxattr, - [ __NR_lgetxattr ] = (syscall_handler_t *) sys_lgetxattr, - [ __NR_fgetxattr ] = (syscall_handler_t *) sys_fgetxattr, - [ __NR_listxattr ] = (syscall_handler_t *) sys_listxattr, - [ __NR_llistxattr ] = (syscall_handler_t *) sys_llistxattr, - [ __NR_flistxattr ] = (syscall_handler_t *) sys_flistxattr, - [ __NR_removexattr ] = (syscall_handler_t *) sys_removexattr, - [ __NR_lremovexattr ] = (syscall_handler_t *) sys_lremovexattr, - [ __NR_fremovexattr ] = (syscall_handler_t *) sys_fremovexattr, - [ __NR_tkill ] = (syscall_handler_t *) sys_tkill, - [ __NR_futex ] = (syscall_handler_t *) sys_futex, - [ __NR_sched_setaffinity ] = (syscall_handler_t *) sys_sched_setaffinity, - [ __NR_sched_getaffinity ] = (syscall_handler_t *) sys_sched_getaffinity, - [ __NR_io_setup ] = (syscall_handler_t *) sys_io_setup, - [ __NR_io_destroy ] = (syscall_handler_t *) sys_io_destroy, - [ __NR_io_getevents ] = (syscall_handler_t *) sys_io_getevents, - [ __NR_io_submit ] = (syscall_handler_t *) sys_io_submit, - [ __NR_io_cancel ] = (syscall_handler_t *) sys_io_cancel, - [ __NR_exit_group ] = (syscall_handler_t *) sys_exit_group, - [ __NR_lookup_dcookie ] = (syscall_handler_t *) sys_lookup_dcookie, - [ __NR_epoll_create ] = (syscall_handler_t *) sys_epoll_create, - [ __NR_epoll_ctl ] = (syscall_handler_t *) sys_epoll_ctl, - [ __NR_epoll_wait ] = (syscall_handler_t *) sys_epoll_wait, - [ __NR_remap_file_pages ] = (syscall_handler_t *) sys_remap_file_pages, - [ __NR_set_tid_address ] = (syscall_handler_t *) sys_set_tid_address, - [ __NR_timer_create ] = (syscall_handler_t *) sys_timer_create, - [ __NR_timer_settime ] = (syscall_handler_t *) sys_timer_settime, - [ __NR_timer_gettime ] = (syscall_handler_t *) sys_timer_gettime, - [ __NR_timer_getoverrun ] = (syscall_handler_t *) sys_timer_getoverrun, - [ __NR_timer_delete ] = (syscall_handler_t *) sys_timer_delete, - [ __NR_clock_settime ] = (syscall_handler_t *) sys_clock_settime, - [ __NR_clock_gettime ] = (syscall_handler_t *) sys_clock_gettime, - [ __NR_clock_getres ] = (syscall_handler_t *) sys_clock_getres, - [ __NR_clock_nanosleep ] = (syscall_handler_t *) sys_clock_nanosleep, - [ __NR_tgkill ] = (syscall_handler_t *) sys_tgkill, - [ __NR_utimes ] = (syscall_handler_t *) sys_utimes, - [ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64, - [ __NR_vserver ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_mbind ] = (syscall_handler_t *) sys_mbind, - [ __NR_get_mempolicy ] = (syscall_handler_t *) sys_get_mempolicy, - [ __NR_set_mempolicy ] = (syscall_handler_t *) sys_set_mempolicy, - [ __NR_mq_open ] = (syscall_handler_t *) sys_mq_open, - [ __NR_mq_unlink ] = (syscall_handler_t *) sys_mq_unlink, - [ __NR_mq_timedsend ] = (syscall_handler_t *) sys_mq_timedsend, - [ __NR_mq_timedreceive ] = (syscall_handler_t *) sys_mq_timedreceive, - [ __NR_mq_notify ] = (syscall_handler_t *) sys_mq_notify, - [ __NR_mq_getsetattr ] = (syscall_handler_t *) sys_mq_getsetattr, - [ __NR_kexec_load ] = (syscall_handler_t *) sys_ni_syscall, - [ __NR_waitid ] = (syscall_handler_t *) sys_waitid, - [ __NR_add_key ] = (syscall_handler_t *) sys_add_key, - [ __NR_request_key ] = (syscall_handler_t *) sys_request_key, - [ __NR_keyctl ] = (syscall_handler_t *) sys_keyctl, - - ARCH_SYSCALLS - [ LAST_SYSCALL + 1 ... NR_syscalls ] = - (syscall_handler_t *) sys_ni_syscall -}; diff --git a/arch/um/kernel/syscall_kern.c b/arch/um/kernel/syscall_kern.c index 42731e0..b7a5525 100644 --- a/arch/um/kernel/syscall_kern.c +++ b/arch/um/kernel/syscall_kern.c @@ -17,7 +17,6 @@ #include "linux/utime.h" #include "asm/mman.h" #include "asm/uaccess.h" -#include "asm/ipc.h" #include "kern_util.h" #include "user_util.h" #include "sysdep/syscalls.h" diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c index 2461cd7..6516fc5 100644 --- a/arch/um/kernel/time_kern.c +++ b/arch/um/kernel/time_kern.c @@ -48,8 +48,6 @@ static unsigned long long prev_usecs; static long long delta; /* Deviation per interval */ #endif -#define MILLION 1000000 - void timer_irq(union uml_pt_regs *regs) { unsigned long long ticks = 0; @@ -136,22 +134,6 @@ long um_stime(int __user *tptr) return 0; } -void __udelay(unsigned long usecs) -{ - int i, n; - - n = (loops_per_jiffy * HZ * usecs) / MILLION; - for(i=0;i<n;i++) ; -} - -void __const_udelay(unsigned long usecs) -{ - int i, n; - - n = (loops_per_jiffy * HZ * usecs) / MILLION; - for(i=0;i<n;i++) ; -} - void timer_handler(int sig, union uml_pt_regs *regs) { local_irq_disable(); diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c index 47e766e..5fca2c6 100644 --- a/arch/um/kernel/trap_kern.c +++ b/arch/um/kernel/trap_kern.c @@ -48,7 +48,7 @@ int handle_page_fault(unsigned long address, unsigned long ip, goto good_area; else if(!(vma->vm_flags & VM_GROWSDOWN)) goto out; - else if(!ARCH_IS_STACKGROW(address)) + else if(is_user && !ARCH_IS_STACKGROW(address)) goto out; else if(expand_stack(vma, address)) goto out; @@ -133,12 +133,19 @@ static int check_remapped_addr(unsigned long address, int is_write) return(0); } -unsigned long segv(unsigned long address, unsigned long ip, int is_write, - int is_user, void *sc) +/* + * We give a *copy* of the faultinfo in the regs to segv. + * This must be done, since nesting SEGVs could overwrite + * the info in the regs. A pointer to the info then would + * give us bad data! + */ +unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc) { struct siginfo si; void *catcher; int err; + int is_write = FAULT_WRITE(fi); + unsigned long address = FAULT_ADDRESS(fi); if(!is_user && (address >= start_vm) && (address < end_vm)){ flush_tlb_kernel_vm(); @@ -159,7 +166,7 @@ unsigned long segv(unsigned long address, unsigned long ip, int is_write, } else if(current->thread.fault_addr != NULL) panic("fault_addr set but no fault catcher"); - else if(arch_fixup(ip, sc)) + else if(!is_user && arch_fixup(ip, sc)) return(0); if(!is_user) @@ -171,6 +178,7 @@ unsigned long segv(unsigned long address, unsigned long ip, int is_write, si.si_errno = 0; si.si_code = BUS_ADRERR; si.si_addr = (void *)address; + current->thread.arch.faultinfo = fi; force_sig_info(SIGBUS, &si, current); } else if(err == -ENOMEM){ @@ -180,22 +188,20 @@ unsigned long segv(unsigned long address, unsigned long ip, int is_write, else { si.si_signo = SIGSEGV; si.si_addr = (void *) address; - current->thread.cr2 = address; - current->thread.err = is_write; + current->thread.arch.faultinfo = fi; force_sig_info(SIGSEGV, &si, current); } return(0); } -void bad_segv(unsigned long address, unsigned long ip, int is_write) +void bad_segv(struct faultinfo fi, unsigned long ip) { struct siginfo si; si.si_signo = SIGSEGV; si.si_code = SEGV_ACCERR; - si.si_addr = (void *) address; - current->thread.cr2 = address; - current->thread.err = is_write; + si.si_addr = (void *) FAULT_ADDRESS(fi); + current->thread.arch.faultinfo = fi; force_sig_info(SIGSEGV, &si, current); } @@ -204,6 +210,7 @@ void relay_signal(int sig, union uml_pt_regs *regs) if(arch_handle_signal(sig, regs)) return; if(!UPT_IS_USER(regs)) panic("Kernel mode signal %d", sig); + current->thread.arch.faultinfo = *UPT_FAULTINFO(regs); force_sig(sig, current); } diff --git a/arch/um/kernel/trap_user.c b/arch/um/kernel/trap_user.c index 50a4042..f825a6e 100644 --- a/arch/um/kernel/trap_user.c +++ b/arch/um/kernel/trap_user.c @@ -54,23 +54,22 @@ struct { void segv_handler(int sig, union uml_pt_regs *regs) { int index, max; + struct faultinfo * fi = UPT_FAULTINFO(regs); - if(UPT_IS_USER(regs) && !UPT_SEGV_IS_FIXABLE(regs)){ - bad_segv(UPT_FAULT_ADDR(regs), UPT_IP(regs), - UPT_FAULT_WRITE(regs)); + if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){ + bad_segv(*fi, UPT_IP(regs)); return; } max = sizeof(segfault_record)/sizeof(segfault_record[0]); index = next_trap_index(max); nsegfaults++; - segfault_record[index].address = UPT_FAULT_ADDR(regs); + segfault_record[index].address = FAULT_ADDRESS(*fi); segfault_record[index].pid = os_getpid(); - segfault_record[index].is_write = UPT_FAULT_WRITE(regs); + segfault_record[index].is_write = FAULT_WRITE(*fi); segfault_record[index].sp = UPT_SP(regs); segfault_record[index].is_user = UPT_IS_USER(regs); - segv(UPT_FAULT_ADDR(regs), UPT_IP(regs), UPT_FAULT_WRITE(regs), - UPT_IS_USER(regs), regs); + segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs); } void usr2_handler(int sig, union uml_pt_regs *regs) diff --git a/arch/um/kernel/tt/Makefile b/arch/um/kernel/tt/Makefile index 3d5177d..c3faea2 100644 --- a/arch/um/kernel/tt/Makefile +++ b/arch/um/kernel/tt/Makefile @@ -4,6 +4,7 @@ # extra-y := unmap_fin.o +targets := unmap.o clean-files := unmap_tmp.o obj-y = exec_kern.o exec_user.o gdb.o ksyms.o mem.o mem_user.o process_kern.o \ diff --git a/arch/um/kernel/tt/include/mode_kern-tt.h b/arch/um/kernel/tt/include/mode_kern-tt.h index 28aaab3..e0ca0e0 100644 --- a/arch/um/kernel/tt/include/mode_kern-tt.h +++ b/arch/um/kernel/tt/include/mode_kern-tt.h @@ -19,7 +19,6 @@ extern int copy_thread_tt(int nr, unsigned long clone_flags, unsigned long sp, unsigned long stack_top, struct task_struct *p, struct pt_regs *regs); extern void release_thread_tt(struct task_struct *task); -extern void exit_thread_tt(void); extern void initial_thread_cb_tt(void (*proc)(void *), void *arg); extern void init_idle_tt(void); extern void flush_tlb_kernel_range_tt(unsigned long start, unsigned long end); diff --git a/arch/um/kernel/tt/include/uaccess-tt.h b/arch/um/kernel/tt/include/uaccess-tt.h index f0bad01..3fbb5fe 100644 --- a/arch/um/kernel/tt/include/uaccess-tt.h +++ b/arch/um/kernel/tt/include/uaccess-tt.h @@ -34,7 +34,7 @@ extern unsigned long uml_physmem; (under_task_size(addr, size) || is_stack(addr, size)))) static inline int verify_area_tt(int type, const void * addr, - unsigned long size) + unsigned long size) { return(access_ok_tt(type, addr, size) ? 0 : -EFAULT); } diff --git a/arch/um/kernel/tt/mem.c b/arch/um/kernel/tt/mem.c index 74346a0..bcb8796 100644 --- a/arch/um/kernel/tt/mem.c +++ b/arch/um/kernel/tt/mem.c @@ -21,14 +21,8 @@ void before_mem_tt(unsigned long brk_start) remap_data(UML_ROUND_DOWN(&__bss_start), UML_ROUND_UP(&_end), 1); } -#ifdef CONFIG_HOST_2G_2G -#define TOP 0x80000000 -#else -#define TOP 0xc0000000 -#endif - #define SIZE ((CONFIG_NEST_LEVEL + CONFIG_KERNEL_HALF_GIGS) * 0x20000000) -#define START (TOP - SIZE) +#define START (CONFIG_TOP_ADDR - SIZE) unsigned long set_task_sizes_tt(int arg, unsigned long *host_size_out, unsigned long *task_size_out) diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c index f19f7c1..df810ca 100644 --- a/arch/um/kernel/tt/process_kern.c +++ b/arch/um/kernel/tt/process_kern.c @@ -65,8 +65,7 @@ void *switch_to_tt(void *prev, void *next, void *last) panic("write of switch_pipe failed, err = %d", -err); reading = 1; - if((from->exit_state == EXIT_ZOMBIE) || - (from->exit_state == EXIT_DEAD)) + if(from->thread.mode.tt.switch_pipe[0] == -1) os_kill_process(os_getpid(), 0); err = os_read_file(from->thread.mode.tt.switch_pipe[0], &c, sizeof(c)); @@ -81,8 +80,7 @@ void *switch_to_tt(void *prev, void *next, void *last) * in case it has not already killed itself. */ prev_sched = current->thread.prev_sched; - if((prev_sched->exit_state == EXIT_ZOMBIE) || - (prev_sched->exit_state == EXIT_DEAD)) + if(prev_sched->thread.mode.tt.switch_pipe[0] == -1) os_kill_process(prev_sched->thread.mode.tt.extern_pid, 1); change_sig(SIGVTALRM, vtalrm); @@ -101,14 +99,18 @@ void release_thread_tt(struct task_struct *task) { int pid = task->thread.mode.tt.extern_pid; + /* + * We first have to kill the other process, before + * closing its switch_pipe. Else it might wake up + * and receive "EOF" before we could kill it. + */ if(os_getpid() != pid) os_kill_process(pid, 0); -} -void exit_thread_tt(void) -{ - os_close_file(current->thread.mode.tt.switch_pipe[0]); - os_close_file(current->thread.mode.tt.switch_pipe[1]); + os_close_file(task->thread.mode.tt.switch_pipe[0]); + os_close_file(task->thread.mode.tt.switch_pipe[1]); + /* use switch_pipe as flag: thread is released */ + task->thread.mode.tt.switch_pipe[0] = -1; } void suspend_new_thread(int fd) diff --git a/arch/um/kernel/tt/syscall_user.c b/arch/um/kernel/tt/syscall_user.c index e4e7e9c..b218316 100644 --- a/arch/um/kernel/tt/syscall_user.c +++ b/arch/um/kernel/tt/syscall_user.c @@ -63,6 +63,10 @@ void do_syscall(void *task, int pid, int local_using_sysemu) UPT_SYSCALL_NR(TASK_REGS(task)) = PT_SYSCALL_NR(proc_regs); +#ifdef UPT_ORIGGPR2 + UPT_ORIGGPR2(TASK_REGS(task)) = REGS_ORIGGPR2(proc_regs); +#endif + if(((unsigned long *) PT_IP(proc_regs) >= &_stext) && ((unsigned long *) PT_IP(proc_regs) <= &_etext)) tracer_panic("I'm tracing myself and I can't get out"); diff --git a/arch/um/kernel/tt/tracer.c b/arch/um/kernel/tt/tracer.c index 7b5d937..d11e739 100644 --- a/arch/um/kernel/tt/tracer.c +++ b/arch/um/kernel/tt/tracer.c @@ -26,6 +26,7 @@ #include "kern_util.h" #include "chan_user.h" #include "ptrace_user.h" +#include "irq_user.h" #include "mode.h" #include "tt.h" @@ -33,7 +34,7 @@ static int tracer_winch[2]; int is_tracer_winch(int pid, int fd, void *data) { - if(pid != tracing_pid) + if(pid != os_getpgrp()) return(0); register_winch_irq(tracer_winch[0], fd, -1, data); @@ -89,8 +90,10 @@ void tracer_panic(char *format, ...) static void tracer_segv(int sig, struct sigcontext sc) { + struct faultinfo fi; + GET_FAULTINFO_FROM_SC(fi, &sc); printf("Tracing thread segfault at address 0x%lx, ip 0x%lx\n", - SC_FAULT_ADDR(&sc), SC_IP(&sc)); + FAULT_ADDRESS(fi), SC_IP(&sc)); while(1) pause(); } @@ -117,6 +120,7 @@ static int signal_tramp(void *arg) signal(SIGSEGV, (__sighandler_t) sig_handler); set_cmdline("(idle thread)"); set_init_pid(os_getpid()); + init_irq_signals(0); proc = arg; return((*proc)(NULL)); } diff --git a/arch/um/kernel/tt/trap_user.c b/arch/um/kernel/tt/trap_user.c index 92a3820..fc10861 100644 --- a/arch/um/kernel/tt/trap_user.c +++ b/arch/um/kernel/tt/trap_user.c @@ -7,6 +7,7 @@ #include <errno.h> #include <signal.h> #include "sysdep/ptrace.h" +#include "sysdep/sigcontext.h" #include "signal_user.h" #include "user_util.h" #include "kern_util.h" @@ -28,6 +29,11 @@ void sig_handler_common_tt(int sig, void *sc_ptr) change_sig(SIGSEGV, 1); r = &TASK_REGS(get_current())->tt; + if ( sig == SIGFPE || sig == SIGSEGV || + sig == SIGBUS || sig == SIGILL || + sig == SIGTRAP ) { + GET_FAULTINFO_FROM_SC(r->faultinfo, sc); + } save_regs = *r; is_user = user_context(SC_SP(sc)); r->sc = sc; diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 5c49d88..4d10ec3 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -23,6 +23,7 @@ #include "asm/ptrace.h" #include "asm/elf.h" #include "asm/user.h" +#include "asm/setup.h" #include "ubd_user.h" #include "asm/current.h" #include "asm/setup.h" @@ -42,9 +43,9 @@ #define DEFAULT_COMMAND_LINE "root=98:0" /* Changed in linux_main and setup_arch, which run before SMP is started */ -char command_line[COMMAND_LINE_SIZE] = { 0 }; +static char command_line[COMMAND_LINE_SIZE] = { 0 }; -void add_arg(char *arg) +static void add_arg(char *arg) { if (strlen(command_line) + strlen(arg) + 1 > COMMAND_LINE_SIZE) { printf("add_arg: Too many command line arguments!\n"); @@ -449,7 +450,7 @@ void __init setup_arch(char **cmdline_p) { notifier_chain_register(&panic_notifier_list, &panic_exit_notifier); paging_init(); - strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE); + strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE); *cmdline_p = command_line; setup_hostinfo(); } diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S new file mode 100644 index 0000000..1660a769 --- /dev/null +++ b/arch/um/kernel/vmlinux.lds.S @@ -0,0 +1,6 @@ +#include <linux/config.h> +#ifdef CONFIG_LD_SCRIPT_STATIC +#include "uml.lds.S" +#else +#include "dyn.lds.S" +#endif diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c index ba9ca1cc..1e126bf 100644 --- a/arch/um/os-Linux/process.c +++ b/arch/um/os-Linux/process.c @@ -123,6 +123,11 @@ int os_getpid(void) return(getpid()); } +int os_getpgrp(void) +{ + return getpgrp(); +} + int os_map_memory(void *virt, int fd, unsigned long long off, unsigned long len, int r, int w, int x) { diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index 7eac1ba..c7bfd5e 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -8,7 +8,7 @@ #include "mode.h" #include "sysdep/signal.h" -void sig_handler(int sig) +void sig_handler(ARCH_SIGHDLR_PARAM) { struct sigcontext *sc; @@ -19,7 +19,7 @@ void sig_handler(int sig) extern int timer_irq_inited; -void alarm_handler(int sig) +void alarm_handler(ARCH_SIGHDLR_PARAM) { struct sigcontext *sc; diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c index 148645b..9a0ad09 100644 --- a/arch/um/os-Linux/sys-i386/registers.c +++ b/arch/um/os-Linux/sys-i386/registers.c @@ -105,14 +105,15 @@ void init_registers(int pid) panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", err); + errno = 0; err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs); if(!err) return; + if(errno != EIO) + panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d", + errno); have_fpx_regs = 0; - if(err != EIO) - panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d", - err); err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs); if(err) diff --git a/arch/um/os-Linux/util/Makefile b/arch/um/os-Linux/util/Makefile index fb00ddf..9778aed 100644 --- a/arch/um/os-Linux/util/Makefile +++ b/arch/um/os-Linux/util/Makefile @@ -1,4 +1,4 @@ hostprogs-y := mk_user_constants always := $(hostprogs-y) -mk_user_constants-objs := mk_user_constants.o +HOSTCFLAGS_mk_user_constants.o := -I$(objtree)/arch/um diff --git a/arch/um/os-Linux/util/mk_user_constants.c b/arch/um/os-Linux/util/mk_user_constants.c index 0933518..4838f30 100644 --- a/arch/um/os-Linux/util/mk_user_constants.c +++ b/arch/um/os-Linux/util/mk_user_constants.c @@ -1,11 +1,5 @@ #include <stdio.h> -#include <asm/types.h> -/* For some reason, x86_64 nowhere defines u64 and u32, even though they're - * used throughout the headers. - */ -typedef __u64 u64; -typedef __u32 u32; -#include <asm/user.h> +#include <user-offsets.h> int main(int argc, char **argv) { @@ -20,7 +14,7 @@ int main(int argc, char **argv) * x86_64 (216 vs 168 bytes). user_regs_struct is the correct size on * both x86_64 and i386. */ - printf("#define UM_FRAME_SIZE %d\n", (int) sizeof(struct user_regs_struct)); + printf("#define UM_FRAME_SIZE %d\n", __UM_FRAME_SIZE); printf("\n"); printf("#endif\n"); diff --git a/arch/um/scripts/Makefile.rules b/arch/um/scripts/Makefile.rules index 143f6fe..0b24918 100644 --- a/arch/um/scripts/Makefile.rules +++ b/arch/um/scripts/Makefile.rules @@ -2,12 +2,27 @@ # arch/um: Generic definitions # =========================================================================== -USER_SINGLE_OBJS = $(foreach f,$(patsubst %.o,%,$(obj-y) $(obj-m)),$($(f)-objs)) -USER_OBJS += $(filter %_user.o,$(obj-y) $(obj-m) $(USER_SINGLE_OBJS)) - +USER_SINGLE_OBJS := \ + $(foreach f,$(patsubst %.o,%,$(obj-y) $(obj-m)),$($(f)-objs)) +USER_OBJS += $(filter %_user.o,$(obj-y) $(obj-m) $(USER_SINGLE_OBJS)) USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) -$(USER_OBJS): c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) $(CFLAGS_$(notdir $@)) +$(USER_OBJS) : c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) \ + $(CFLAGS_$(notdir $@)) quiet_cmd_make_link = SYMLINK $@ -cmd_make_link = rm -f $@; ln -sf $(srctree)/arch/$(SUBARCH)/$($(notdir $@)-dir)/$(notdir $@) $@ +cmd_make_link = ln -sf $(srctree)/arch/$(SUBARCH)/$($(notdir $@)-dir)/$(notdir $@) $@ + +# this needs to be before the foreach, because targets does not accept +# complete paths like $(obj)/$(f). To make sure this works, use a := assignment, +# or we will get $(obj)/$(f) in the "targets" value. +# Also, this forces you to use the := syntax when assigning to targets. +# Otherwise the line below will cause an infinite loop (if you don't know why, +# just do it). + +targets := $(targets) $(SYMLINKS) + +SYMLINKS := $(foreach f,$(SYMLINKS),$(obj)/$(f)) + +$(SYMLINKS): FORCE + $(call if_changed,make_link) diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile index 71b47e6..fcd67c3 100644 --- a/arch/um/sys-i386/Makefile +++ b/arch/um/sys-i386/Makefile @@ -1,29 +1,19 @@ obj-y = bitops.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \ - ptrace_user.o semaphore.o signal.o sigcontext.o syscalls.o sysrq.o + ptrace_user.o semaphore.o signal.o sigcontext.o syscalls.o sysrq.o \ + sys_call_table.o obj-$(CONFIG_HIGHMEM) += highmem.o obj-$(CONFIG_MODULES) += module.o USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o -include arch/um/scripts/Makefile.rules - SYMLINKS = bitops.c semaphore.c highmem.c module.c -# this needs to be before the foreach, because clean-files does not accept -# complete paths like $(src)/$f. -clean-files := $(SYMLINKS) - -targets += $(SYMLINKS) - -SYMLINKS := $(foreach f,$(SYMLINKS),$(obj)/$f) - bitops.c-dir = lib semaphore.c-dir = kernel highmem.c-dir = mm module.c-dir = kernel -$(SYMLINKS): FORCE - $(call if_changed,make_link) - subdir- := util + +include arch/um/scripts/Makefile.rules diff --git a/arch/um/sys-i386/checksum.S b/arch/um/sys-i386/checksum.S index a11171f..d98b2ff 100644 --- a/arch/um/sys-i386/checksum.S +++ b/arch/um/sys-i386/checksum.S @@ -38,7 +38,7 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum) .text .align 4 -.globl arch_csum_partial +.globl csum_partial #ifndef CONFIG_X86_USE_PPRO_CHECKSUM @@ -49,7 +49,7 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum) * Fortunately, it is easy to convert 2-byte alignment to 4-byte * alignment for the unrolled loop. */ -arch_csum_partial: +csum_partial: pushl %esi pushl %ebx movl 20(%esp),%eax # Function arg: unsigned int sum @@ -119,7 +119,7 @@ arch_csum_partial: /* Version for PentiumII/PPro */ -arch_csum_partial: +csum_partial: pushl %esi pushl %ebx movl 20(%esp),%eax # Function arg: unsigned int sum diff --git a/arch/um/sys-i386/delay.c b/arch/um/sys-i386/delay.c index 20d37db..e9892ee 100644 --- a/arch/um/sys-i386/delay.c +++ b/arch/um/sys-i386/delay.c @@ -1,3 +1,6 @@ +#include "linux/delay.h" +#include "asm/param.h" + void __delay(unsigned long time) { /* Stolen from the i386 __loop_delay */ @@ -12,3 +15,18 @@ void __delay(unsigned long time) :"0" (time)); } +void __udelay(unsigned long usecs) +{ + int i, n; + + n = (loops_per_jiffy * HZ * usecs) / MILLION; + for(i=0;i<n;i++) ; +} + +void __const_udelay(unsigned long usecs) +{ + int i, n; + + n = (loops_per_jiffy * HZ * usecs) / MILLION; + for(i=0;i<n;i++) ; +} diff --git a/arch/um/sys-i386/kernel-offsets.c b/arch/um/sys-i386/kernel-offsets.c new file mode 100644 index 0000000..9f8ecd1 --- /dev/null +++ b/arch/um/sys-i386/kernel-offsets.c @@ -0,0 +1,25 @@ +#include <linux/config.h> +#include <linux/stddef.h> +#include <linux/sched.h> +#include <linux/time.h> +#include <asm/page.h> + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define STR(x) #x +#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " STR(val) " " #val: : ) + +#define BLANK() asm volatile("\n->" : : ) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ + OFFSET(TASK_DEBUGREGS, task_struct, thread.arch.debugregs); +#ifdef CONFIG_MODE_TT + OFFSET(TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid); +#endif +#include <common-offsets.h> +} diff --git a/arch/um/sys-i386/ksyms.c b/arch/um/sys-i386/ksyms.c index 74f70a1..db524ab3 100644 --- a/arch/um/sys-i386/ksyms.c +++ b/arch/um/sys-i386/ksyms.c @@ -2,6 +2,7 @@ #include "linux/in6.h" #include "linux/rwsem.h" #include "asm/byteorder.h" +#include "asm/delay.h" #include "asm/semaphore.h" #include "asm/uaccess.h" #include "asm/checksum.h" @@ -13,5 +14,8 @@ EXPORT_SYMBOL(__down_failed_trylock); EXPORT_SYMBOL(__up_wakeup); /* Networking helper routines. */ -EXPORT_SYMBOL(csum_partial_copy_from); -EXPORT_SYMBOL(csum_partial_copy_to); +EXPORT_SYMBOL(csum_partial); + +/* delay core functions */ +EXPORT_SYMBOL(__const_udelay); +EXPORT_SYMBOL(__udelay); diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c index 31bcb2f..dc755b0 100644 --- a/arch/um/sys-i386/ldt.c +++ b/arch/um/sys-i386/ldt.c @@ -25,7 +25,7 @@ int sys_modify_ldt_tt(int func, void __user *ptr, unsigned long bytecount) #endif #ifdef CONFIG_MODE_SKAS -extern int userspace_pid; +extern int userspace_pid[]; #include "skas_ptrace.h" @@ -56,7 +56,8 @@ int sys_modify_ldt_skas(int func, void __user *ptr, unsigned long bytecount) ldt = ((struct ptrace_ldt) { .func = func, .ptr = buf, .bytecount = bytecount }); - res = ptrace(PTRACE_LDT, userspace_pid, 0, (unsigned long) &ldt); +#warning Need to look up userspace_pid by cpu + res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt); if(res < 0) goto out; diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c index e470d28..e839ce6 100644 --- a/arch/um/sys-i386/ptrace.c +++ b/arch/um/sys-i386/ptrace.c @@ -73,6 +73,25 @@ int putreg(struct task_struct *child, int regno, unsigned long value) return 0; } +int poke_user(struct task_struct *child, long addr, long data) +{ + if ((addr & 3) || addr < 0) + return -EIO; + + if (addr < MAX_REG_OFFSET) + return putreg(child, addr, data); + + else if((addr >= offsetof(struct user, u_debugreg[0])) && + (addr <= offsetof(struct user, u_debugreg[7]))){ + addr -= offsetof(struct user, u_debugreg[0]); + addr = addr >> 2; + if((addr == 4) || (addr == 5)) return -EIO; + child->thread.arch.debugregs[addr] = data; + return 0; + } + return -EIO; +} + unsigned long getreg(struct task_struct *child, int regno) { unsigned long retval = ~0UL; @@ -93,6 +112,27 @@ unsigned long getreg(struct task_struct *child, int regno) return retval; } +int peek_user(struct task_struct *child, long addr, long data) +{ +/* read the word at location addr in the USER area. */ + unsigned long tmp; + + if ((addr & 3) || addr < 0) + return -EIO; + + tmp = 0; /* Default return condition */ + if(addr < MAX_REG_OFFSET){ + tmp = getreg(child, addr); + } + else if((addr >= offsetof(struct user, u_debugreg[0])) && + (addr <= offsetof(struct user, u_debugreg[7]))){ + addr -= offsetof(struct user, u_debugreg[0]); + addr = addr >> 2; + tmp = child->thread.arch.debugregs[addr]; + } + return put_user(tmp, (unsigned long *) data); +} + struct i387_fxsave_struct { unsigned short cwd; unsigned short swd; diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c index 76ba872..03913ca 100644 --- a/arch/um/sys-i386/signal.c +++ b/arch/um/sys-i386/signal.c @@ -47,9 +47,6 @@ static int copy_sc_from_user_skas(struct pt_regs *regs, REGS_CS(regs->regs.skas.regs) = sc.cs; REGS_EFLAGS(regs->regs.skas.regs) = sc.eflags; REGS_SS(regs->regs.skas.regs) = sc.ss; - regs->regs.skas.fault_addr = sc.cr2; - regs->regs.skas.fault_type = FAULT_WRITE(sc.err); - regs->regs.skas.trap_type = sc.trapno; err = restore_fp_registers(userspace_pid[0], fpregs); if(err < 0){ @@ -62,11 +59,11 @@ static int copy_sc_from_user_skas(struct pt_regs *regs, } int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp, - struct pt_regs *regs, unsigned long fault_addr, - int fault_type) + struct pt_regs *regs) { struct sigcontext sc; unsigned long fpregs[HOST_FP_SIZE]; + struct faultinfo * fi = ¤t->thread.arch.faultinfo; int err; sc.gs = REGS_GS(regs->regs.skas.regs); @@ -86,9 +83,9 @@ int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp, sc.eflags = REGS_EFLAGS(regs->regs.skas.regs); sc.esp_at_signal = regs->regs.skas.regs[UESP]; sc.ss = regs->regs.skas.regs[SS]; - sc.cr2 = fault_addr; - sc.err = TO_SC_ERR(fault_type); - sc.trapno = regs->regs.skas.trap_type; + sc.cr2 = fi->cr2; + sc.err = fi->error_code; + sc.trapno = fi->trap_no; err = save_fp_registers(userspace_pid[0], fpregs); if(err < 0){ @@ -167,9 +164,7 @@ static int copy_sc_to_user(struct sigcontext *to, struct _fpstate *fp, { return(CHOOSE_MODE(copy_sc_to_user_tt(to, fp, UPT_SC(&from->regs), sizeof(*fp)), - copy_sc_to_user_skas(to, fp, from, - current->thread.cr2, - current->thread.err))); + copy_sc_to_user_skas(to, fp, from))); } static int copy_ucontext_to_user(struct ucontext *uc, struct _fpstate *fp, diff --git a/arch/um/sys-i386/sys_call_table.S b/arch/um/sys-i386/sys_call_table.S new file mode 100644 index 0000000..ad75c27 --- /dev/null +++ b/arch/um/sys-i386/sys_call_table.S @@ -0,0 +1,16 @@ +#include <linux/linkage.h> +/* Steal i386 syscall table for our purposes, but with some slight changes.*/ + +#define sys_iopl sys_ni_syscall +#define sys_ioperm sys_ni_syscall + +#define sys_vm86old sys_ni_syscall +#define sys_vm86 sys_ni_syscall +#define sys_set_thread_area sys_ni_syscall +#define sys_get_thread_area sys_ni_syscall + +#define sys_stime um_stime +#define sys_time um_time +#define old_mmap old_mmap_i386 + +#include "../../i386/kernel/syscall_table.S" diff --git a/arch/um/sys-i386/user-offsets.c b/arch/um/sys-i386/user-offsets.c new file mode 100644 index 0000000..3ceaabc --- /dev/null +++ b/arch/um/sys-i386/user-offsets.c @@ -0,0 +1,69 @@ +#include <stdio.h> +#include <signal.h> +#include <asm/ptrace.h> +#include <asm/user.h> +#include <linux/stddef.h> + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ + OFFSET(SC_IP, sigcontext, eip); + OFFSET(SC_SP, sigcontext, esp); + OFFSET(SC_FS, sigcontext, fs); + OFFSET(SC_GS, sigcontext, gs); + OFFSET(SC_DS, sigcontext, ds); + OFFSET(SC_ES, sigcontext, es); + OFFSET(SC_SS, sigcontext, ss); + OFFSET(SC_CS, sigcontext, cs); + OFFSET(SC_EFLAGS, sigcontext, eflags); + OFFSET(SC_EAX, sigcontext, eax); + OFFSET(SC_EBX, sigcontext, ebx); + OFFSET(SC_ECX, sigcontext, ecx); + OFFSET(SC_EDX, sigcontext, edx); + OFFSET(SC_EDI, sigcontext, edi); + OFFSET(SC_ESI, sigcontext, esi); + OFFSET(SC_EBP, sigcontext, ebp); + OFFSET(SC_TRAPNO, sigcontext, trapno); + OFFSET(SC_ERR, sigcontext, err); + OFFSET(SC_CR2, sigcontext, cr2); + OFFSET(SC_FPSTATE, sigcontext, fpstate); + OFFSET(SC_SIGMASK, sigcontext, oldmask); + OFFSET(SC_FP_CW, _fpstate, cw); + OFFSET(SC_FP_SW, _fpstate, sw); + OFFSET(SC_FP_TAG, _fpstate, tag); + OFFSET(SC_FP_IPOFF, _fpstate, ipoff); + OFFSET(SC_FP_CSSEL, _fpstate, cssel); + OFFSET(SC_FP_DATAOFF, _fpstate, dataoff); + OFFSET(SC_FP_DATASEL, _fpstate, datasel); + OFFSET(SC_FP_ST, _fpstate, _st); + OFFSET(SC_FXSR_ENV, _fpstate, _fxsr_env); + + DEFINE(HOST_FRAME_SIZE, FRAME_SIZE); + DEFINE(HOST_FP_SIZE, + sizeof(struct user_i387_struct) / sizeof(unsigned long)); + DEFINE(HOST_XFP_SIZE, + sizeof(struct user_fxsr_struct) / sizeof(unsigned long)); + + DEFINE(HOST_IP, EIP); + DEFINE(HOST_SP, UESP); + DEFINE(HOST_EFLAGS, EFL); + DEFINE(HOST_EAX, EAX); + DEFINE(HOST_EBX, EBX); + DEFINE(HOST_ECX, ECX); + DEFINE(HOST_EDX, EDX); + DEFINE(HOST_ESI, ESI); + DEFINE(HOST_EDI, EDI); + DEFINE(HOST_EBP, EBP); + DEFINE(HOST_CS, CS); + DEFINE(HOST_SS, SS); + DEFINE(HOST_DS, DS); + DEFINE(HOST_FS, FS); + DEFINE(HOST_ES, ES); + DEFINE(HOST_GS, GS); + DEFINE(__UM_FRAME_SIZE, sizeof(struct user_regs_struct)); +} diff --git a/arch/um/sys-i386/util/Makefile b/arch/um/sys-i386/util/Makefile index 34860f9..bf61afd 100644 --- a/arch/um/sys-i386/util/Makefile +++ b/arch/um/sys-i386/util/Makefile @@ -1,8 +1,5 @@ - hostprogs-y := mk_sc mk_thread always := $(hostprogs-y) -mk_thread-objs := mk_thread_kern.o mk_thread_user.o - -HOSTCFLAGS_mk_thread_kern.o := $(CFLAGS) $(CPPFLAGS) -HOSTCFLAGS_mk_thread_user.o := $(USER_CFLAGS) +HOSTCFLAGS_mk_sc.o := -I$(objtree)/arch/um +HOSTCFLAGS_mk_thread.o := -I$(objtree)/arch/um diff --git a/arch/um/sys-i386/util/mk_sc.c b/arch/um/sys-i386/util/mk_sc.c index 85cbd30..04c0d73 100644 --- a/arch/um/sys-i386/util/mk_sc.c +++ b/arch/um/sys-i386/util/mk_sc.c @@ -1,52 +1,51 @@ #include <stdio.h> -#include <signal.h> -#include <linux/stddef.h> +#include <user-offsets.h> #define SC_OFFSET(name, field) \ - printf("#define " name "(sc) *((unsigned long *) &(((char *) (sc))[%d]))\n",\ - offsetof(struct sigcontext, field)) + printf("#define " #name "(sc) *((unsigned long *) &(((char *) (sc))[%d]))\n",\ + name) #define SC_FP_OFFSET(name, field) \ - printf("#define " name \ + printf("#define " #name \ "(sc) *((unsigned long *) &(((char *) (SC_FPSTATE(sc)))[%d]))\n",\ - offsetof(struct _fpstate, field)) + name) #define SC_FP_OFFSET_PTR(name, field, type) \ - printf("#define " name \ + printf("#define " #name \ "(sc) ((" type " *) &(((char *) (SC_FPSTATE(sc)))[%d]))\n",\ - offsetof(struct _fpstate, field)) + name) int main(int argc, char **argv) { - SC_OFFSET("SC_IP", eip); - SC_OFFSET("SC_SP", esp); - SC_OFFSET("SC_FS", fs); - SC_OFFSET("SC_GS", gs); - SC_OFFSET("SC_DS", ds); - SC_OFFSET("SC_ES", es); - SC_OFFSET("SC_SS", ss); - SC_OFFSET("SC_CS", cs); - SC_OFFSET("SC_EFLAGS", eflags); - SC_OFFSET("SC_EAX", eax); - SC_OFFSET("SC_EBX", ebx); - SC_OFFSET("SC_ECX", ecx); - SC_OFFSET("SC_EDX", edx); - SC_OFFSET("SC_EDI", edi); - SC_OFFSET("SC_ESI", esi); - SC_OFFSET("SC_EBP", ebp); - SC_OFFSET("SC_TRAPNO", trapno); - SC_OFFSET("SC_ERR", err); - SC_OFFSET("SC_CR2", cr2); - SC_OFFSET("SC_FPSTATE", fpstate); - SC_OFFSET("SC_SIGMASK", oldmask); - SC_FP_OFFSET("SC_FP_CW", cw); - SC_FP_OFFSET("SC_FP_SW", sw); - SC_FP_OFFSET("SC_FP_TAG", tag); - SC_FP_OFFSET("SC_FP_IPOFF", ipoff); - SC_FP_OFFSET("SC_FP_CSSEL", cssel); - SC_FP_OFFSET("SC_FP_DATAOFF", dataoff); - SC_FP_OFFSET("SC_FP_DATASEL", datasel); - SC_FP_OFFSET_PTR("SC_FP_ST", _st, "struct _fpstate"); - SC_FP_OFFSET_PTR("SC_FXSR_ENV", _fxsr_env, "void"); + SC_OFFSET(SC_IP, eip); + SC_OFFSET(SC_SP, esp); + SC_OFFSET(SC_FS, fs); + SC_OFFSET(SC_GS, gs); + SC_OFFSET(SC_DS, ds); + SC_OFFSET(SC_ES, es); + SC_OFFSET(SC_SS, ss); + SC_OFFSET(SC_CS, cs); + SC_OFFSET(SC_EFLAGS, eflags); + SC_OFFSET(SC_EAX, eax); + SC_OFFSET(SC_EBX, ebx); + SC_OFFSET(SC_ECX, ecx); + SC_OFFSET(SC_EDX, edx); + SC_OFFSET(SC_EDI, edi); + SC_OFFSET(SC_ESI, esi); + SC_OFFSET(SC_EBP, ebp); + SC_OFFSET(SC_TRAPNO, trapno); + SC_OFFSET(SC_ERR, err); + SC_OFFSET(SC_CR2, cr2); + SC_OFFSET(SC_FPSTATE, fpstate); + SC_OFFSET(SC_SIGMASK, oldmask); + SC_FP_OFFSET(SC_FP_CW, cw); + SC_FP_OFFSET(SC_FP_SW, sw); + SC_FP_OFFSET(SC_FP_TAG, tag); + SC_FP_OFFSET(SC_FP_IPOFF, ipoff); + SC_FP_OFFSET(SC_FP_CSSEL, cssel); + SC_FP_OFFSET(SC_FP_DATAOFF, dataoff); + SC_FP_OFFSET(SC_FP_DATASEL, datasel); + SC_FP_OFFSET_PTR(SC_FP_ST, _st, "struct _fpstate"); + SC_FP_OFFSET_PTR(SC_FXSR_ENV, _fxsr_env, "void"); return(0); } diff --git a/arch/um/sys-i386/util/mk_thread.c b/arch/um/sys-i386/util/mk_thread.c new file mode 100644 index 0000000..7470d0d --- /dev/null +++ b/arch/um/sys-i386/util/mk_thread.c @@ -0,0 +1,22 @@ +#include <stdio.h> +#include <kernel-offsets.h> + +int main(int argc, char **argv) +{ + printf("/*\n"); + printf(" * Generated by mk_thread\n"); + printf(" */\n"); + printf("\n"); + printf("#ifndef __UM_THREAD_H\n"); + printf("#define __UM_THREAD_H\n"); + printf("\n"); + printf("#define TASK_DEBUGREGS(task) ((unsigned long *) " + "&(((char *) (task))[%d]))\n", TASK_DEBUGREGS); +#ifdef TASK_EXTERN_PID + printf("#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[%d]))\n", + TASK_EXTERN_PID); +#endif + printf("\n"); + printf("#endif\n"); + return(0); +} diff --git a/arch/um/sys-i386/util/mk_thread_kern.c b/arch/um/sys-i386/util/mk_thread_kern.c deleted file mode 100644 index 948b1ce..0000000 --- a/arch/um/sys-i386/util/mk_thread_kern.c +++ /dev/null @@ -1,22 +0,0 @@ -#include "linux/config.h" -#include "linux/stddef.h" -#include "linux/sched.h" - -extern void print_head(void); -extern void print_constant_ptr(char *name, int value); -extern void print_constant(char *name, char *type, int value); -extern void print_tail(void); - -#define THREAD_OFFSET(field) offsetof(struct task_struct, thread.field) - -int main(int argc, char **argv) -{ - print_head(); - print_constant_ptr("TASK_DEBUGREGS", THREAD_OFFSET(arch.debugregs)); -#ifdef CONFIG_MODE_TT - print_constant("TASK_EXTERN_PID", "int", THREAD_OFFSET(mode.tt.extern_pid)); -#endif - print_tail(); - return(0); -} - diff --git a/arch/um/sys-i386/util/mk_thread_user.c b/arch/um/sys-i386/util/mk_thread_user.c deleted file mode 100644 index 2620cd6..0000000 --- a/arch/um/sys-i386/util/mk_thread_user.c +++ /dev/null @@ -1,30 +0,0 @@ -#include <stdio.h> - -void print_head(void) -{ - printf("/*\n"); - printf(" * Generated by mk_thread\n"); - printf(" */\n"); - printf("\n"); - printf("#ifndef __UM_THREAD_H\n"); - printf("#define __UM_THREAD_H\n"); - printf("\n"); -} - -void print_constant_ptr(char *name, int value) -{ - printf("#define %s(task) ((unsigned long *) " - "&(((char *) (task))[%d]))\n", name, value); -} - -void print_constant(char *name, char *type, int value) -{ - printf("#define %s(task) *((%s *) &(((char *) (task))[%d]))\n", name, type, - value); -} - -void print_tail(void) -{ - printf("\n"); - printf("#endif\n"); -} diff --git a/arch/um/sys-ppc/ptrace.c b/arch/um/sys-ppc/ptrace.c index a971366d..8e71b47 100644 --- a/arch/um/sys-ppc/ptrace.c +++ b/arch/um/sys-ppc/ptrace.c @@ -8,6 +8,25 @@ int putreg(struct task_struct *child, unsigned long regno, return 0; } +int poke_user(struct task_struct *child, long addr, long data) +{ + if ((addr & 3) || addr < 0) + return -EIO; + + if (addr < MAX_REG_OFFSET) + return putreg(child, addr, data); + + else if((addr >= offsetof(struct user, u_debugreg[0])) && + (addr <= offsetof(struct user, u_debugreg[7]))){ + addr -= offsetof(struct user, u_debugreg[0]); + addr = addr >> 2; + if((addr == 4) || (addr == 5)) return -EIO; + child->thread.arch.debugregs[addr] = data; + return 0; + } + return -EIO; +} + unsigned long getreg(struct task_struct *child, unsigned long regno) { unsigned long retval = ~0UL; @@ -16,6 +35,27 @@ unsigned long getreg(struct task_struct *child, unsigned long regno) return retval; } +int peek_user(struct task_struct *child, long addr, long data) +{ + /* read the word at location addr in the USER area. */ + unsigned long tmp; + + if ((addr & 3) || addr < 0) + return -EIO; + + tmp = 0; /* Default return condition */ + if(addr < MAX_REG_OFFSET){ + tmp = getreg(child, addr); + } + else if((addr >= offsetof(struct user, u_debugreg[0])) && + (addr <= offsetof(struct user, u_debugreg[7]))){ + addr -= offsetof(struct user, u_debugreg[0]); + addr = addr >> 2; + tmp = child->thread.arch.debugregs[addr]; + } + return put_user(tmp, (unsigned long *) data); +} + /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile index 2129e31..3d7da911 100644 --- a/arch/um/sys-x86_64/Makefile +++ b/arch/um/sys-x86_64/Makefile @@ -4,24 +4,20 @@ # Licensed under the GPL # +#XXX: why into lib-y? lib-y = bitops.o bugs.o csum-partial.o delay.o fault.o mem.o memcpy.o \ ptrace.o ptrace_user.o semaphore.o sigcontext.o signal.o \ - syscalls.o sysrq.o thunk.o + syscalls.o sysrq.o thunk.o syscall_table.o + +obj-y := ksyms.o +obj-$(CONFIG_MODULES) += module.o um_module.o USER_OBJS := ptrace_user.o sigcontext.o include arch/um/scripts/Makefile.rules SYMLINKS = bitops.c csum-copy.S csum-partial.c csum-wrappers.c memcpy.S \ - semaphore.c thunk.S - -# this needs to be before the foreach, because clean-files does not accept -# complete paths like $(src)/$f. -clean-files := $(SYMLINKS) - -targets += $(SYMLINKS) - -SYMLINKS := $(foreach f,$(SYMLINKS),$(obj)/$f) + semaphore.c thunk.S module.c bitops.c-dir = lib csum-copy.S-dir = lib @@ -30,8 +26,8 @@ csum-wrappers.c-dir = lib memcpy.S-dir = lib semaphore.c-dir = kernel thunk.S-dir = lib - -$(SYMLINKS): FORCE - $(call if_changed,make_link) +module.c-dir = kernel CFLAGS_csum-partial.o := -Dcsum_partial=arch_csum_partial + +subdir- := util diff --git a/arch/um/sys-x86_64/delay.c b/arch/um/sys-x86_64/delay.c index f3b5187..651332a 100644 --- a/arch/um/sys-x86_64/delay.c +++ b/arch/um/sys-x86_64/delay.c @@ -5,7 +5,9 @@ * Licensed under the GPL */ +#include "linux/delay.h" #include "asm/processor.h" +#include "asm/param.h" void __delay(unsigned long loops) { @@ -14,6 +16,22 @@ void __delay(unsigned long loops) for(i = 0; i < loops; i++) ; } +void __udelay(unsigned long usecs) +{ + int i, n; + + n = (loops_per_jiffy * HZ * usecs) / MILLION; + for(i=0;i<n;i++) ; +} + +void __const_udelay(unsigned long usecs) +{ + int i, n; + + n = (loops_per_jiffy * HZ * usecs) / MILLION; + for(i=0;i<n;i++) ; +} + /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff --git a/arch/um/sys-x86_64/kernel-offsets.c b/arch/um/sys-x86_64/kernel-offsets.c new file mode 100644 index 0000000..220e875 --- /dev/null +++ b/arch/um/sys-x86_64/kernel-offsets.c @@ -0,0 +1,24 @@ +#include <linux/config.h> +#include <linux/stddef.h> +#include <linux/sched.h> +#include <linux/time.h> +#include <asm/page.h> + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define DEFINE_STR1(x) #x +#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " DEFINE_STR1(val) " " #val: : ) + +#define BLANK() asm volatile("\n->" : : ) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ +#ifdef CONFIG_MODE_TT + OFFSET(TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid); +#endif +#include <common-offsets.h> +} diff --git a/arch/um/sys-x86_64/ksyms.c b/arch/um/sys-x86_64/ksyms.c new file mode 100644 index 0000000..a27f0ee --- /dev/null +++ b/arch/um/sys-x86_64/ksyms.c @@ -0,0 +1,20 @@ +#include "linux/module.h" +#include "linux/in6.h" +#include "linux/rwsem.h" +#include "asm/byteorder.h" +#include "asm/semaphore.h" +#include "asm/uaccess.h" +#include "asm/checksum.h" +#include "asm/errno.h" + +EXPORT_SYMBOL(__down_failed); +EXPORT_SYMBOL(__down_failed_interruptible); +EXPORT_SYMBOL(__down_failed_trylock); +EXPORT_SYMBOL(__up_wakeup); + +/*XXX: we need them because they would be exported by x86_64 */ +EXPORT_SYMBOL(__memcpy); + +/* Networking helper routines. */ +/*EXPORT_SYMBOL(csum_partial_copy_from); +EXPORT_SYMBOL(csum_partial_copy_to);*/ diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c index 8c146b2..b593bb2 100644 --- a/arch/um/sys-x86_64/ptrace.c +++ b/arch/um/sys-x86_64/ptrace.c @@ -62,6 +62,27 @@ int putreg(struct task_struct *child, int regno, unsigned long value) return 0; } +int poke_user(struct task_struct *child, long addr, long data) +{ + if ((addr & 3) || addr < 0) + return -EIO; + + if (addr < MAX_REG_OFFSET) + return putreg(child, addr, data); + +#if 0 /* Need x86_64 debugregs handling */ + else if((addr >= offsetof(struct user, u_debugreg[0])) && + (addr <= offsetof(struct user, u_debugreg[7]))){ + addr -= offsetof(struct user, u_debugreg[0]); + addr = addr >> 2; + if((addr == 4) || (addr == 5)) return -EIO; + child->thread.arch.debugregs[addr] = data; + return 0; + } +#endif + return -EIO; +} + unsigned long getreg(struct task_struct *child, int regno) { unsigned long retval = ~0UL; @@ -84,6 +105,29 @@ unsigned long getreg(struct task_struct *child, int regno) return retval; } +int peek_user(struct task_struct *child, long addr, long data) +{ + /* read the word at location addr in the USER area. */ + unsigned long tmp; + + if ((addr & 3) || addr < 0) + return -EIO; + + tmp = 0; /* Default return condition */ + if(addr < MAX_REG_OFFSET){ + tmp = getreg(child, addr); + } +#if 0 /* Need x86_64 debugregs handling */ + else if((addr >= offsetof(struct user, u_debugreg[0])) && + (addr <= offsetof(struct user, u_debugreg[7]))){ + addr -= offsetof(struct user, u_debugreg[0]); + addr = addr >> 2; + tmp = child->thread.arch.debugregs[addr]; + } +#endif + return put_user(tmp, (unsigned long *) data); +} + void arch_switch(void) { /* XXX diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c index 5bc5a0d..73a7926 100644 --- a/arch/um/sys-x86_64/signal.c +++ b/arch/um/sys-x86_64/signal.c @@ -57,7 +57,7 @@ static int copy_sc_from_user_skas(struct pt_regs *regs, int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp, struct pt_regs *regs, unsigned long mask) { - unsigned long eflags; + struct faultinfo * fi = ¤t->thread.arch.faultinfo; int err = 0; err |= __put_user(0, &to->gs); @@ -84,14 +84,16 @@ int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp, err |= PUTREG(regs, R14, to, r14); err |= PUTREG(regs, R15, to, r15); err |= PUTREG(regs, CS, to, cs); /* XXX x86_64 doesn't do this */ - err |= __put_user(current->thread.err, &to->err); - err |= __put_user(current->thread.trap_no, &to->trapno); + + err |= __put_user(fi->cr2, &to->cr2); + err |= __put_user(fi->error_code, &to->err); + err |= __put_user(fi->trap_no, &to->trapno); + err |= PUTREG(regs, RIP, to, rip); err |= PUTREG(regs, EFLAGS, to, eflags); #undef PUTREG err |= __put_user(mask, &to->oldmask); - err |= __put_user(current->thread.cr2, &to->cr2); return(err); } @@ -166,7 +168,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, frame = (struct rt_sigframe __user *) round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8; - frame -= 128; + ((unsigned char *) frame) -= 128; if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate))) goto out; diff --git a/arch/um/sys-x86_64/syscall_table.c b/arch/um/sys-x86_64/syscall_table.c new file mode 100644 index 0000000..34b2e84 --- /dev/null +++ b/arch/um/sys-x86_64/syscall_table.c @@ -0,0 +1,59 @@ +/* System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c + * with some changes for UML. */ + +#include <linux/linkage.h> +#include <linux/sys.h> +#include <linux/cache.h> +#include <linux/config.h> + +#define __NO_STUBS + +/* Below you can see, in terms of #define's, the differences between the x86-64 + * and the UML syscall table. */ + +/* Not going to be implemented by UML, since we have no hardware. */ +#define stub_iopl sys_ni_syscall +#define sys_ioperm sys_ni_syscall + +/* The UML TLS problem. Note that x86_64 does not implement this, so the below + * is needed only for the ia32 compatibility. */ +/*#define sys_set_thread_area sys_ni_syscall +#define sys_get_thread_area sys_ni_syscall*/ + +/* For __NR_time. The x86-64 name hopefully will change from sys_time64 to + * sys_time (since the current situation is bogus). I've sent a patch to cleanup + * this. Remove below the obsoleted line. */ +#define sys_time64 um_time +#define sys_time um_time + +/* On UML we call it this way ("old" means it's not mmap2) */ +#define sys_mmap old_mmap +/* On x86-64 sys_uname is actually sys_newuname plus a compatibility trick. + * See arch/x86_64/kernel/sys_x86_64.c */ +#define sys_uname sys_uname64 + +#define stub_clone sys_clone +#define stub_fork sys_fork +#define stub_vfork sys_vfork +#define stub_execve sys_execve +#define stub_rt_sigsuspend sys_rt_sigsuspend +#define stub_sigaltstack sys_sigaltstack +#define stub_rt_sigreturn sys_rt_sigreturn + +#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ; +#undef _ASM_X86_64_UNISTD_H_ +#include <asm-x86_64/unistd.h> + +#undef __SYSCALL +#define __SYSCALL(nr, sym) [ nr ] = sym, +#undef _ASM_X86_64_UNISTD_H_ + +typedef void (*sys_call_ptr_t)(void); + +extern void sys_ni_syscall(void); + +sys_call_ptr_t sys_call_table[__NR_syscall_max+1] __cacheline_aligned = { + /* Smells like a like a compiler bug -- it doesn't work when the & below is removed. */ + [0 ... __NR_syscall_max] = &sys_ni_syscall, +#include <asm-x86_64/unistd.h> +}; diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c index 68205a0..dd99146 100644 --- a/arch/um/sys-x86_64/syscalls.c +++ b/arch/um/sys-x86_64/syscalls.c @@ -7,6 +7,8 @@ #include "linux/linkage.h" #include "linux/slab.h" #include "linux/shm.h" +#include "linux/utsname.h" +#include "linux/personality.h" #include "asm/uaccess.h" #define __FRAME_OFFSETS #include "asm/ptrace.h" @@ -14,11 +16,15 @@ #include "asm/prctl.h" /* XXX This should get the constants from libc */ #include "choose-mode.h" -asmlinkage long wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg) +asmlinkage long sys_uname64(struct new_utsname __user * name) { - unsigned long raddr; - - return do_shmat(shmid, shmaddr, shmflg, &raddr) ?: (long) raddr; + int err; + down_read(&uts_sem); + err = copy_to_user(name, &system_utsname, sizeof (*name)); + up_read(&uts_sem); + if (personality(current->personality) == PER_LINUX32) + err |= copy_to_user(&name->machine, "i686", 5); + return err ? -EFAULT : 0; } #ifdef CONFIG_MODE_TT @@ -38,6 +44,8 @@ long sys_modify_ldt_tt(int func, void *ptr, unsigned long bytecount) #ifdef CONFIG_MODE_SKAS extern int userspace_pid[]; +#include "skas_ptrace.h" + long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount) { struct ptrace_ldt ldt; diff --git a/arch/um/sys-x86_64/um_module.c b/arch/um/sys-x86_64/um_module.c new file mode 100644 index 0000000..8b8eff1 --- /dev/null +++ b/arch/um/sys-x86_64/um_module.c @@ -0,0 +1,19 @@ +#include <linux/vmalloc.h> +#include <linux/moduleloader.h> + +/*Copied from i386 arch/i386/kernel/module.c */ +void *module_alloc(unsigned long size) +{ + if (size == 0) + return NULL; + return vmalloc_exec(size); +} + +/* Free memory returned from module_alloc */ +void module_free(struct module *mod, void *module_region) +{ + vfree(module_region); + /* FIXME: If module_region == mod->init_region, trim exception + table entries. */ +} + diff --git a/arch/um/sys-x86_64/user-offsets.c b/arch/um/sys-x86_64/user-offsets.c new file mode 100644 index 0000000..5e14792 --- /dev/null +++ b/arch/um/sys-x86_64/user-offsets.c @@ -0,0 +1,78 @@ +#include <stdio.h> +#include <stddef.h> +#include <signal.h> +#define __FRAME_OFFSETS +#include <asm/ptrace.h> +#include <asm/user.h> + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define OFFSET(sym, str, mem) \ + DEFINE(sym, offsetof(struct str, mem)); + +void foo(void) +{ + OFFSET(SC_RBX, sigcontext, rbx); + OFFSET(SC_RCX, sigcontext, rcx); + OFFSET(SC_RDX, sigcontext, rdx); + OFFSET(SC_RSI, sigcontext, rsi); + OFFSET(SC_RDI, sigcontext, rdi); + OFFSET(SC_RBP, sigcontext, rbp); + OFFSET(SC_RAX, sigcontext, rax); + OFFSET(SC_R8, sigcontext, r8); + OFFSET(SC_R9, sigcontext, r9); + OFFSET(SC_R10, sigcontext, r10); + OFFSET(SC_R11, sigcontext, r11); + OFFSET(SC_R12, sigcontext, r12); + OFFSET(SC_R13, sigcontext, r13); + OFFSET(SC_R14, sigcontext, r14); + OFFSET(SC_R15, sigcontext, r15); + OFFSET(SC_IP, sigcontext, rip); + OFFSET(SC_SP, sigcontext, rsp); + OFFSET(SC_CR2, sigcontext, cr2); + OFFSET(SC_ERR, sigcontext, err); + OFFSET(SC_TRAPNO, sigcontext, trapno); + OFFSET(SC_CS, sigcontext, cs); + OFFSET(SC_FS, sigcontext, fs); + OFFSET(SC_GS, sigcontext, gs); + OFFSET(SC_EFLAGS, sigcontext, eflags); + OFFSET(SC_SIGMASK, sigcontext, oldmask); +#if 0 + OFFSET(SC_ORIG_RAX, sigcontext, orig_rax); + OFFSET(SC_DS, sigcontext, ds); + OFFSET(SC_ES, sigcontext, es); + OFFSET(SC_SS, sigcontext, ss); +#endif + + DEFINE(HOST_FRAME_SIZE, FRAME_SIZE); + DEFINE(HOST_RBX, RBX); + DEFINE(HOST_RCX, RCX); + DEFINE(HOST_RDI, RDI); + DEFINE(HOST_RSI, RSI); + DEFINE(HOST_RDX, RDX); + DEFINE(HOST_RBP, RBP); + DEFINE(HOST_RAX, RAX); + DEFINE(HOST_R8, R8); + DEFINE(HOST_R9, R9); + DEFINE(HOST_R10, R10); + DEFINE(HOST_R11, R11); + DEFINE(HOST_R12, R12); + DEFINE(HOST_R13, R13); + DEFINE(HOST_R14, R14); + DEFINE(HOST_R15, R15); + DEFINE(HOST_ORIG_RAX, ORIG_RAX); + DEFINE(HOST_CS, CS); + DEFINE(HOST_SS, SS); + DEFINE(HOST_EFLAGS, EFLAGS); +#if 0 + DEFINE(HOST_FS, FS); + DEFINE(HOST_GS, GS); + DEFINE(HOST_DS, DS); + DEFINE(HOST_ES, ES); +#endif + + DEFINE(HOST_IP, RIP); + DEFINE(HOST_SP, RSP); + DEFINE(__UM_FRAME_SIZE, sizeof(struct user_regs_struct)); +} diff --git a/arch/um/sys-x86_64/util/Makefile b/arch/um/sys-x86_64/util/Makefile index 0026079..75b052c 100644 --- a/arch/um/sys-x86_64/util/Makefile +++ b/arch/um/sys-x86_64/util/Makefile @@ -4,7 +4,5 @@ hostprogs-y := mk_sc mk_thread always := $(hostprogs-y) -mk_thread-objs := mk_thread_kern.o mk_thread_user.o - -HOSTCFLAGS_mk_thread_kern.o := $(CFLAGS) $(CPPFLAGS) -HOSTCFLAGS_mk_thread_user.o := $(USER_CFLAGS) +HOSTCFLAGS_mk_sc.o := -I$(objtree)/arch/um +HOSTCFLAGS_mk_thread.o := -I$(objtree)/arch/um diff --git a/arch/um/sys-x86_64/util/mk_sc.c b/arch/um/sys-x86_64/util/mk_sc.c index c236e21..7619bc3 100644 --- a/arch/um/sys-x86_64/util/mk_sc.c +++ b/arch/um/sys-x86_64/util/mk_sc.c @@ -3,56 +3,45 @@ */ #include <stdio.h> -#include <signal.h> -#include <linux/stddef.h> +#include <user-offsets.h> -#define SC_OFFSET(name, field) \ - printf("#define " name \ - "(sc) *((unsigned long *) &(((char *) (sc))[%ld]))\n",\ - offsetof(struct sigcontext, field)) - -#define SC_FP_OFFSET(name, field) \ - printf("#define " name \ - "(sc) *((unsigned long *) &(((char *) (SC_FPSTATE(sc)))[%ld]))\n",\ - offsetof(struct _fpstate, field)) - -#define SC_FP_OFFSET_PTR(name, field, type) \ - printf("#define " name \ - "(sc) ((" type " *) &(((char *) (SC_FPSTATE(sc)))[%d]))\n",\ - offsetof(struct _fpstate, field)) +#define SC_OFFSET(name) \ + printf("#define " #name \ + "(sc) *((unsigned long *) &(((char *) (sc))[%d]))\n",\ + name) int main(int argc, char **argv) { - SC_OFFSET("SC_RBX", rbx); - SC_OFFSET("SC_RCX", rcx); - SC_OFFSET("SC_RDX", rdx); - SC_OFFSET("SC_RSI", rsi); - SC_OFFSET("SC_RDI", rdi); - SC_OFFSET("SC_RBP", rbp); - SC_OFFSET("SC_RAX", rax); - SC_OFFSET("SC_R8", r8); - SC_OFFSET("SC_R9", r9); - SC_OFFSET("SC_R10", r10); - SC_OFFSET("SC_R11", r11); - SC_OFFSET("SC_R12", r12); - SC_OFFSET("SC_R13", r13); - SC_OFFSET("SC_R14", r14); - SC_OFFSET("SC_R15", r15); - SC_OFFSET("SC_IP", rip); - SC_OFFSET("SC_SP", rsp); - SC_OFFSET("SC_CR2", cr2); - SC_OFFSET("SC_ERR", err); - SC_OFFSET("SC_TRAPNO", trapno); - SC_OFFSET("SC_CS", cs); - SC_OFFSET("SC_FS", fs); - SC_OFFSET("SC_GS", gs); - SC_OFFSET("SC_EFLAGS", eflags); - SC_OFFSET("SC_SIGMASK", oldmask); + SC_OFFSET(SC_RBX); + SC_OFFSET(SC_RCX); + SC_OFFSET(SC_RDX); + SC_OFFSET(SC_RSI); + SC_OFFSET(SC_RDI); + SC_OFFSET(SC_RBP); + SC_OFFSET(SC_RAX); + SC_OFFSET(SC_R8); + SC_OFFSET(SC_R9); + SC_OFFSET(SC_R10); + SC_OFFSET(SC_R11); + SC_OFFSET(SC_R12); + SC_OFFSET(SC_R13); + SC_OFFSET(SC_R14); + SC_OFFSET(SC_R15); + SC_OFFSET(SC_IP); + SC_OFFSET(SC_SP); + SC_OFFSET(SC_CR2); + SC_OFFSET(SC_ERR); + SC_OFFSET(SC_TRAPNO); + SC_OFFSET(SC_CS); + SC_OFFSET(SC_FS); + SC_OFFSET(SC_GS); + SC_OFFSET(SC_EFLAGS); + SC_OFFSET(SC_SIGMASK); #if 0 - SC_OFFSET("SC_ORIG_RAX", orig_rax); - SC_OFFSET("SC_DS", ds); - SC_OFFSET("SC_ES", es); - SC_OFFSET("SC_SS", ss); + SC_OFFSET(SC_ORIG_RAX); + SC_OFFSET(SC_DS); + SC_OFFSET(SC_ES); + SC_OFFSET(SC_SS); #endif return(0); } diff --git a/arch/um/sys-x86_64/util/mk_thread.c b/arch/um/sys-x86_64/util/mk_thread.c new file mode 100644 index 0000000..1551739 --- /dev/null +++ b/arch/um/sys-x86_64/util/mk_thread.c @@ -0,0 +1,20 @@ +#include <stdio.h> +#include <kernel-offsets.h> + +int main(int argc, char **argv) +{ + printf("/*\n"); + printf(" * Generated by mk_thread\n"); + printf(" */\n"); + printf("\n"); + printf("#ifndef __UM_THREAD_H\n"); + printf("#define __UM_THREAD_H\n"); + printf("\n"); +#ifdef TASK_EXTERN_PID + printf("#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[%d]))\n", + TASK_EXTERN_PID); +#endif + printf("\n"); + printf("#endif\n"); + return(0); +} diff --git a/arch/um/sys-x86_64/util/mk_thread_kern.c b/arch/um/sys-x86_64/util/mk_thread_kern.c deleted file mode 100644 index a281673..0000000 --- a/arch/um/sys-x86_64/util/mk_thread_kern.c +++ /dev/null @@ -1,21 +0,0 @@ -#include "linux/config.h" -#include "linux/stddef.h" -#include "linux/sched.h" - -extern void print_head(void); -extern void print_constant_ptr(char *name, int value); -extern void print_constant(char *name, char *type, int value); -extern void print_tail(void); - -#define THREAD_OFFSET(field) offsetof(struct task_struct, thread.field) - -int main(int argc, char **argv) -{ - print_head(); -#ifdef CONFIG_MODE_TT - print_constant("TASK_EXTERN_PID", "int", THREAD_OFFSET(mode.tt.extern_pid)); -#endif - print_tail(); - return(0); -} - diff --git a/arch/um/sys-x86_64/util/mk_thread_user.c b/arch/um/sys-x86_64/util/mk_thread_user.c deleted file mode 100644 index 7989725..0000000 --- a/arch/um/sys-x86_64/util/mk_thread_user.c +++ /dev/null @@ -1,30 +0,0 @@ -#include <stdio.h> - -void print_head(void) -{ - printf("/*\n"); - printf(" * Generated by mk_thread\n"); - printf(" */\n"); - printf("\n"); - printf("#ifndef __UM_THREAD_H\n"); - printf("#define __UM_THREAD_H\n"); - printf("\n"); -} - -void print_constant_ptr(char *name, int value) -{ - printf("#define %s(task) ((unsigned long *) " - "&(((char *) (task))[%d]))\n", name, value); -} - -void print_constant(char *name, char *type, int value) -{ - printf("#define %s(task) *((%s *) &(((char *) (task))[%d]))\n", name, type, - value); -} - -void print_tail(void) -{ - printf("\n"); - printf("#endif\n"); -} diff --git a/arch/um/util/Makefile b/arch/um/util/Makefile index e2ab712..4c7551c 100644 --- a/arch/um/util/Makefile +++ b/arch/um/util/Makefile @@ -1,8 +1,5 @@ hostprogs-y := mk_task mk_constants always := $(hostprogs-y) -mk_task-objs := mk_task_user.o mk_task_kern.o -mk_constants-objs := mk_constants_user.o mk_constants_kern.o - -HOSTCFLAGS_mk_task_kern.o := $(CFLAGS) $(CPPFLAGS) -HOSTCFLAGS_mk_constants_kern.o := $(CFLAGS) $(CPPFLAGS) +HOSTCFLAGS_mk_task.o := -I$(objtree)/arch/um +HOSTCFLAGS_mk_constants.o := -I$(objtree)/arch/um diff --git a/arch/um/util/mk_constants.c b/arch/um/util/mk_constants.c new file mode 100644 index 0000000..ab217be --- /dev/null +++ b/arch/um/util/mk_constants.c @@ -0,0 +1,32 @@ +#include <stdio.h> +#include <kernel-offsets.h> + +#define SHOW_INT(sym) printf("#define %s %d\n", #sym, sym) +#define SHOW_STR(sym) printf("#define %s %s\n", #sym, sym) + +int main(int argc, char **argv) +{ + printf("/*\n"); + printf(" * Generated by mk_constants\n"); + printf(" */\n"); + printf("\n"); + printf("#ifndef __UM_CONSTANTS_H\n"); + printf("#define __UM_CONSTANTS_H\n"); + printf("\n"); + + SHOW_INT(UM_KERN_PAGE_SIZE); + + SHOW_STR(UM_KERN_EMERG); + SHOW_STR(UM_KERN_ALERT); + SHOW_STR(UM_KERN_CRIT); + SHOW_STR(UM_KERN_ERR); + SHOW_STR(UM_KERN_WARNING); + SHOW_STR(UM_KERN_NOTICE); + SHOW_STR(UM_KERN_INFO); + SHOW_STR(UM_KERN_DEBUG); + + SHOW_INT(UM_NSEC_PER_SEC); + printf("\n"); + printf("#endif\n"); + return(0); +} diff --git a/arch/um/util/mk_constants_kern.c b/arch/um/util/mk_constants_kern.c deleted file mode 100644 index cdcb123..0000000 --- a/arch/um/util/mk_constants_kern.c +++ /dev/null @@ -1,28 +0,0 @@ -#include "linux/kernel.h" -#include "linux/stringify.h" -#include "linux/time.h" -#include "asm/page.h" - -extern void print_head(void); -extern void print_constant_str(char *name, char *value); -extern void print_constant_int(char *name, int value); -extern void print_tail(void); - -int main(int argc, char **argv) -{ - print_head(); - print_constant_int("UM_KERN_PAGE_SIZE", PAGE_SIZE); - - print_constant_str("UM_KERN_EMERG", KERN_EMERG); - print_constant_str("UM_KERN_ALERT", KERN_ALERT); - print_constant_str("UM_KERN_CRIT", KERN_CRIT); - print_constant_str("UM_KERN_ERR", KERN_ERR); - print_constant_str("UM_KERN_WARNING", KERN_WARNING); - print_constant_str("UM_KERN_NOTICE", KERN_NOTICE); - print_constant_str("UM_KERN_INFO", KERN_INFO); - print_constant_str("UM_KERN_DEBUG", KERN_DEBUG); - - print_constant_int("UM_NSEC_PER_SEC", NSEC_PER_SEC); - print_tail(); - return(0); -} diff --git a/arch/um/util/mk_constants_user.c b/arch/um/util/mk_constants_user.c deleted file mode 100644 index 8f4d7e5..0000000 --- a/arch/um/util/mk_constants_user.c +++ /dev/null @@ -1,28 +0,0 @@ -#include <stdio.h> - -void print_head(void) -{ - printf("/*\n"); - printf(" * Generated by mk_constants\n"); - printf(" */\n"); - printf("\n"); - printf("#ifndef __UM_CONSTANTS_H\n"); - printf("#define __UM_CONSTANTS_H\n"); - printf("\n"); -} - -void print_constant_str(char *name, char *value) -{ - printf("#define %s \"%s\"\n", name, value); -} - -void print_constant_int(char *name, int value) -{ - printf("#define %s %d\n", name, value); -} - -void print_tail(void) -{ - printf("\n"); - printf("#endif\n"); -} diff --git a/arch/um/util/mk_task_user.c b/arch/um/util/mk_task.c index 9db849f..36c9606 100644 --- a/arch/um/util/mk_task_user.c +++ b/arch/um/util/mk_task.c @@ -1,18 +1,19 @@ #include <stdio.h> +#include <kernel-offsets.h> -void print(char *name, char *type, int offset) +void print_ptr(char *name, char *type, int offset) { - printf("#define %s(task) *((%s *) &(((char *) (task))[%d]))\n", name, type, + printf("#define %s(task) ((%s *) &(((char *) (task))[%d]))\n", name, type, offset); } -void print_ptr(char *name, char *type, int offset) +void print(char *name, char *type, int offset) { - printf("#define %s(task) ((%s *) &(((char *) (task))[%d]))\n", name, type, + printf("#define %s(task) *((%s *) &(((char *) (task))[%d]))\n", name, type, offset); } -void print_head(void) +int main(int argc, char **argv) { printf("/*\n"); printf(" * Generated by mk_task\n"); @@ -21,10 +22,9 @@ void print_head(void) printf("#ifndef __TASK_H\n"); printf("#define __TASK_H\n"); printf("\n"); -} - -void print_tail(void) -{ + print_ptr("TASK_REGS", "union uml_pt_regs", TASK_REGS); + print("TASK_PID", "int", TASK_PID); printf("\n"); printf("#endif\n"); + return(0); } diff --git a/arch/um/util/mk_task_kern.c b/arch/um/util/mk_task_kern.c deleted file mode 100644 index c218103..0000000 --- a/arch/um/util/mk_task_kern.c +++ /dev/null @@ -1,17 +0,0 @@ -#include "linux/sched.h" -#include "linux/stddef.h" - -extern void print(char *name, char *type, int offset); -extern void print_ptr(char *name, char *type, int offset); -extern void print_head(void); -extern void print_tail(void); - -int main(int argc, char **argv) -{ - print_head(); - print_ptr("TASK_REGS", "union uml_pt_regs", - offsetof(struct task_struct, thread.regs)); - print("TASK_PID", "int", offsetof(struct task_struct, pid)); - print_tail(); - return(0); -} |
