diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/parisc/Kconfig | 1 | ||||
-rw-r--r-- | arch/parisc/include/asm/fixmap.h | 4 | ||||
-rw-r--r-- | arch/parisc/include/asm/hardirq.h | 20 | ||||
-rw-r--r-- | arch/parisc/include/asm/ptrace.h | 5 | ||||
-rw-r--r-- | arch/parisc/include/asm/syscall.h | 40 | ||||
-rw-r--r-- | arch/parisc/include/asm/thread_info.h | 14 | ||||
-rw-r--r-- | arch/parisc/kernel/asm-offsets.c | 4 | ||||
-rw-r--r-- | arch/parisc/kernel/entry.S | 21 | ||||
-rw-r--r-- | arch/parisc/kernel/irq.c | 5 | ||||
-rw-r--r-- | arch/parisc/kernel/module.c | 2 | ||||
-rw-r--r-- | arch/parisc/kernel/ptrace.c | 42 | ||||
-rw-r--r-- | arch/parisc/kernel/signal.c | 5 | ||||
-rw-r--r-- | arch/parisc/kernel/syscall.S | 22 | ||||
-rw-r--r-- | arch/parisc/kernel/vmlinux.lds.S | 10 | ||||
-rw-r--r-- | arch/parisc/mm/init.c | 11 |
15 files changed, 126 insertions, 80 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index f388dc6..524d935 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -18,6 +18,7 @@ config PARISC select BUG select HAVE_PERF_EVENTS select GENERIC_ATOMIC64 if !64BIT + select HAVE_ARCH_TRACEHOOK help The PA-RISC microprocessor is designed by Hewlett-Packard and used in many of their workstations & servers (HP9000 700 and 800 series, diff --git a/arch/parisc/include/asm/fixmap.h b/arch/parisc/include/asm/fixmap.h index de3fe3a..6fec4d4 100644 --- a/arch/parisc/include/asm/fixmap.h +++ b/arch/parisc/include/asm/fixmap.h @@ -21,9 +21,9 @@ #define KERNEL_MAP_END (TMPALIAS_MAP_START) #ifndef __ASSEMBLY__ -extern void *vmalloc_start; +extern void *parisc_vmalloc_start; #define PCXL_DMA_MAP_SIZE (8*1024*1024) -#define VMALLOC_START ((unsigned long)vmalloc_start) +#define VMALLOC_START ((unsigned long)parisc_vmalloc_start) #define VMALLOC_END (KERNEL_MAP_END) #endif /*__ASSEMBLY__*/ diff --git a/arch/parisc/include/asm/hardirq.h b/arch/parisc/include/asm/hardirq.h index ce93133..0d68184 100644 --- a/arch/parisc/include/asm/hardirq.h +++ b/arch/parisc/include/asm/hardirq.h @@ -1,29 +1,11 @@ /* hardirq.h: PA-RISC hard IRQ support. * * Copyright (C) 2001 Matthew Wilcox <matthew@wil.cx> - * - * The locking is really quite interesting. There's a cpu-local - * count of how many interrupts are being handled, and a global - * lock. An interrupt can only be serviced if the global lock - * is free. You can't be sure no more interrupts are being - * serviced until you've acquired the lock and then checked - * all the per-cpu interrupt counts are all zero. It's a specialised - * br_lock, and that's exactly how Sparc does it. We don't because - * it's more locking for us. This way is lock-free in the interrupt path. */ #ifndef _PARISC_HARDIRQ_H #define _PARISC_HARDIRQ_H -#include <linux/threads.h> -#include <linux/irq.h> - -typedef struct { - unsigned long __softirq_pending; /* set_bit is used on this */ -} ____cacheline_aligned irq_cpustat_t; - -#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ - -void ack_bad_irq(unsigned int irq); +#include <asm-generic/hardirq.h> #endif /* _PARISC_HARDIRQ_H */ diff --git a/arch/parisc/include/asm/ptrace.h b/arch/parisc/include/asm/ptrace.h index 302f68d..aead40b 100644 --- a/arch/parisc/include/asm/ptrace.h +++ b/arch/parisc/include/asm/ptrace.h @@ -59,8 +59,11 @@ void user_enable_block_step(struct task_struct *task); #define user_mode(regs) (((regs)->iaoq[0] & 3) ? 1 : 0) #define user_space(regs) (((regs)->iasq[1] != 0) ? 1 : 0) #define instruction_pointer(regs) ((regs)->iaoq[0] & ~3) +#define user_stack_pointer(regs) ((regs)->gr[30]) unsigned long profile_pc(struct pt_regs *); extern void show_regs(struct pt_regs *); -#endif + + +#endif /* __KERNEL__ */ #endif diff --git a/arch/parisc/include/asm/syscall.h b/arch/parisc/include/asm/syscall.h new file mode 100644 index 0000000..8bdfd2c --- /dev/null +++ b/arch/parisc/include/asm/syscall.h @@ -0,0 +1,40 @@ +/* syscall.h */ + +#ifndef _ASM_PARISC_SYSCALL_H_ +#define _ASM_PARISC_SYSCALL_H_ + +#include <linux/err.h> +#include <asm/ptrace.h> + +static inline long syscall_get_nr(struct task_struct *tsk, + struct pt_regs *regs) +{ + return regs->gr[20]; +} + +static inline void syscall_get_arguments(struct task_struct *tsk, + struct pt_regs *regs, unsigned int i, + unsigned int n, unsigned long *args) +{ + BUG_ON(i); + + switch (n) { + case 6: + args[5] = regs->gr[21]; + case 5: + args[4] = regs->gr[22]; + case 4: + args[3] = regs->gr[23]; + case 3: + args[2] = regs->gr[24]; + case 2: + args[1] = regs->gr[25]; + case 1: + args[0] = regs->gr[26]; + break; + default: + BUG(); + } +} + +#endif /*_ASM_PARISC_SYSCALL_H_*/ diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h index ac775a7..7ecc103 100644 --- a/arch/parisc/include/asm/thread_info.h +++ b/arch/parisc/include/asm/thread_info.h @@ -32,6 +32,11 @@ struct thread_info { #define init_thread_info (init_thread_union.thread_info) #define init_stack (init_thread_union.stack) +/* how to get the thread information struct from C */ +#define current_thread_info() ((struct thread_info *)mfctl(30)) + +#endif /* !__ASSEMBLY */ + /* thread information allocation */ #define THREAD_SIZE_ORDER 2 @@ -40,11 +45,6 @@ struct thread_info { #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) #define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER) -/* how to get the thread information struct from C */ -#define current_thread_info() ((struct thread_info *)mfctl(30)) - -#endif /* !__ASSEMBLY */ - #define PREEMPT_ACTIVE_BIT 28 #define PREEMPT_ACTIVE (1 << PREEMPT_ACTIVE_BIT) @@ -60,6 +60,8 @@ struct thread_info { #define TIF_RESTORE_SIGMASK 6 /* restore saved signal mask */ #define TIF_FREEZE 7 /* is freezing for suspend */ #define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ +#define TIF_SINGLESTEP 9 /* single stepping? */ +#define TIF_BLOCKSTEP 10 /* branch stepping? */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) @@ -69,6 +71,8 @@ struct thread_info { #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) #define _TIF_FREEZE (1 << TIF_FREEZE) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) +#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) +#define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \ _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK) diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c index 699cf8e..fcd3c70 100644 --- a/arch/parisc/kernel/asm-offsets.c +++ b/arch/parisc/kernel/asm-offsets.c @@ -270,8 +270,8 @@ int main(void) DEFINE(DTLB_OFF_COUNT, offsetof(struct pdc_cache_info, dt_off_count)); DEFINE(DTLB_LOOP, offsetof(struct pdc_cache_info, dt_loop)); BLANK(); - DEFINE(PA_BLOCKSTEP_BIT, 31-PT_BLOCKSTEP_BIT); - DEFINE(PA_SINGLESTEP_BIT, 31-PT_SINGLESTEP_BIT); + DEFINE(TIF_BLOCKSTEP_PA_BIT, 31-TIF_BLOCKSTEP); + DEFINE(TIF_SINGLESTEP_PA_BIT, 31-TIF_SINGLESTEP); BLANK(); DEFINE(ASM_PMD_SHIFT, PMD_SHIFT); DEFINE(ASM_PGDIR_SHIFT, PGDIR_SHIFT); diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S index 8c4712b..3a44f7f 100644 --- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -2047,12 +2047,13 @@ syscall_do_signal: b,n syscall_check_sig syscall_restore: - /* Are we being ptraced? */ LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 - ldw TASK_PTRACE(%r1), %r19 - bb,< %r19,31,syscall_restore_rfi - nop + /* Are we being ptraced? */ + ldw TASK_FLAGS(%r1),%r19 + ldi (_TIF_SINGLESTEP|_TIF_BLOCKSTEP),%r2 + and,COND(=) %r19,%r2,%r0 + b,n syscall_restore_rfi ldo TASK_PT_FR31(%r1),%r19 /* reload fpregs */ rest_fp %r19 @@ -2113,16 +2114,16 @@ syscall_restore_rfi: ldi 0x0b,%r20 /* Create new PSW */ depi -1,13,1,%r20 /* C, Q, D, and I bits */ - /* The values of PA_SINGLESTEP_BIT and PA_BLOCKSTEP_BIT are - * set in include/linux/ptrace.h and converted to PA bitmap + /* The values of SINGLESTEP_BIT and BLOCKSTEP_BIT are + * set in thread_info.h and converted to PA bitmap * numbers in asm-offsets.c */ - /* if ((%r19.PA_SINGLESTEP_BIT)) { %r20.27=1} */ - extru,= %r19,PA_SINGLESTEP_BIT,1,%r0 + /* if ((%r19.SINGLESTEP_BIT)) { %r20.27=1} */ + extru,= %r19,TIF_SINGLESTEP_PA_BIT,1,%r0 depi -1,27,1,%r20 /* R bit */ - /* if ((%r19.PA_BLOCKSTEP_BIT)) { %r20.7=1} */ - extru,= %r19,PA_BLOCKSTEP_BIT,1,%r0 + /* if ((%r19.BLOCKSTEP_BIT)) { %r20.7=1} */ + extru,= %r19,TIF_BLOCKSTEP_PA_BIT,1,%r0 depi -1,7,1,%r20 /* T bit */ STREG %r20,TASK_PT_PSW(%r1) diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c index 330f536..2e7610c 100644 --- a/arch/parisc/kernel/irq.c +++ b/arch/parisc/kernel/irq.c @@ -423,8 +423,3 @@ void __init init_IRQ(void) set_eiem(cpu_eiem); /* EIEM : enable all external intr */ } - -void ack_bad_irq(unsigned int irq) -{ - printk(KERN_WARNING "unexpected IRQ %d\n", irq); -} diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c index 61ee0ee..2120746 100644 --- a/arch/parisc/kernel/module.c +++ b/arch/parisc/kernel/module.c @@ -893,7 +893,7 @@ int module_finalize(const Elf_Ehdr *hdr, * ourselves */ for (i = 1; i < hdr->e_shnum; i++) { if(sechdrs[i].sh_type == SHT_SYMTAB - && (sechdrs[i].sh_type & SHF_ALLOC)) { + && (sechdrs[i].sh_flags & SHF_ALLOC)) { int strindex = sechdrs[i].sh_link; /* FIXME: AWFUL HACK * The cast is to drop the const from diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index 927db36..c4f49e4 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -13,6 +13,7 @@ #include <linux/smp.h> #include <linux/errno.h> #include <linux/ptrace.h> +#include <linux/tracehook.h> #include <linux/user.h> #include <linux/personality.h> #include <linux/security.h> @@ -35,7 +36,8 @@ */ void ptrace_disable(struct task_struct *task) { - task->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP); + clear_tsk_thread_flag(task, TIF_SINGLESTEP); + clear_tsk_thread_flag(task, TIF_BLOCKSTEP); /* make sure the trap bits are not set */ pa_psw(task)->r = 0; @@ -55,8 +57,8 @@ void user_disable_single_step(struct task_struct *task) void user_enable_single_step(struct task_struct *task) { - task->ptrace &= ~PT_BLOCKSTEP; - task->ptrace |= PT_SINGLESTEP; + clear_tsk_thread_flag(task, TIF_BLOCKSTEP); + set_tsk_thread_flag(task, TIF_SINGLESTEP); if (pa_psw(task)->n) { struct siginfo si; @@ -98,8 +100,8 @@ void user_enable_single_step(struct task_struct *task) void user_enable_block_step(struct task_struct *task) { - task->ptrace &= ~PT_SINGLESTEP; - task->ptrace |= PT_BLOCKSTEP; + clear_tsk_thread_flag(task, TIF_SINGLESTEP); + set_tsk_thread_flag(task, TIF_BLOCKSTEP); /* Enable taken branch trap. */ pa_psw(task)->r = 0; @@ -263,22 +265,20 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, } #endif +long do_syscall_trace_enter(struct pt_regs *regs) +{ + if (test_thread_flag(TIF_SYSCALL_TRACE) && + tracehook_report_syscall_entry(regs)) + return -1L; + + return regs->gr[20]; +} -void syscall_trace(void) +void do_syscall_trace_exit(struct pt_regs *regs) { - if (!test_thread_flag(TIF_SYSCALL_TRACE)) - return; - if (!(current->ptrace & PT_PTRACED)) - return; - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); - /* - * this isn't the same as continuing with a signal, but it will do - * for normal use. strace only continues with a signal if the - * stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig(current->exit_code, current, 1); - current->exit_code = 0; - } + int stepping = test_thread_flag(TIF_SINGLESTEP) || + test_thread_flag(TIF_BLOCKSTEP); + + if (stepping || test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall_exit(regs, stepping); } diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index 8eb3c63..e8467e4 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -21,6 +21,7 @@ #include <linux/errno.h> #include <linux/wait.h> #include <linux/ptrace.h> +#include <linux/tracehook.h> #include <linux/unistd.h> #include <linux/stddef.h> #include <linux/compat.h> @@ -34,7 +35,6 @@ #include <asm/asm-offsets.h> #ifdef CONFIG_COMPAT -#include <linux/compat.h> #include "signal32.h" #endif @@ -468,6 +468,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, sigaddset(¤t->blocked,sig); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); + + tracehook_signal_handler(sig, info, ka, regs, 0); + return 1; } diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index 59fc1a43..f5f9602 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -288,18 +288,23 @@ tracesys: STREG %r18,PT_GR18(%r2) /* Finished saving things for the debugger */ - ldil L%syscall_trace,%r1 + copy %r2,%r26 + ldil L%do_syscall_trace_enter,%r1 ldil L%tracesys_next,%r2 - be R%syscall_trace(%sr7,%r1) + be R%do_syscall_trace_enter(%sr7,%r1) ldo R%tracesys_next(%r2),%r2 -tracesys_next: +tracesys_next: + /* do_syscall_trace_enter either returned the syscallno, or -1L, + * so we skip restoring the PT_GR20 below, since we pulled it from + * task->thread.regs.gr[20] above. + */ + copy %ret0,%r20 ldil L%sys_call_table,%r1 ldo R%sys_call_table(%r1), %r19 ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */ LDREG TI_TASK(%r1), %r1 - LDREG TASK_PT_GR20(%r1), %r20 LDREG TASK_PT_GR26(%r1), %r26 /* Restore the users args */ LDREG TASK_PT_GR25(%r1), %r25 LDREG TASK_PT_GR24(%r1), %r24 @@ -336,7 +341,8 @@ tracesys_exit: #ifdef CONFIG_64BIT ldo -16(%r30),%r29 /* Reference param save area */ #endif - bl syscall_trace, %r2 + ldo TASK_REGS(%r1),%r26 + bl do_syscall_trace_exit,%r2 STREG %r28,TASK_PT_GR28(%r1) /* save return value now */ ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */ LDREG TI_TASK(%r1), %r1 @@ -353,12 +359,12 @@ tracesys_exit: tracesys_sigexit: ldo -THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1 /* get task ptr */ - LDREG 0(%r1), %r1 + LDREG TI_TASK(%r1), %r1 #ifdef CONFIG_64BIT ldo -16(%r30),%r29 /* Reference param save area */ #endif - bl syscall_trace, %r2 - nop + bl do_syscall_trace_exit,%r2 + ldo TASK_REGS(%r1),%r26 ldil L%syscall_exit_rfi,%r1 be,n R%syscall_exit_rfi(%sr7,%r1) diff --git a/arch/parisc/kernel/vmlinux.lds.S b/arch/parisc/kernel/vmlinux.lds.S index 775be27..fda4baa 100644 --- a/arch/parisc/kernel/vmlinux.lds.S +++ b/arch/parisc/kernel/vmlinux.lds.S @@ -28,6 +28,7 @@ #include <asm/cache.h> #include <asm/page.h> #include <asm/asm-offsets.h> +#include <asm/thread_info.h> /* ld script to make hppa Linux kernel */ #ifndef CONFIG_64BIT @@ -134,6 +135,15 @@ SECTIONS __init_begin = .; INIT_TEXT_SECTION(16384) INIT_DATA_SECTION(16) + /* we have to discard exit text and such at runtime, not link time */ + .exit.text : + { + EXIT_TEXT + } + .exit.data : + { + EXIT_DATA + } PERCPU(PAGE_SIZE) . = ALIGN(PAGE_SIZE); diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index d5aca31..13b6e3e 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -434,8 +434,8 @@ void mark_rodata_ro(void) #define SET_MAP_OFFSET(x) ((void *)(((unsigned long)(x) + VM_MAP_OFFSET) \ & ~(VM_MAP_OFFSET-1))) -void *vmalloc_start __read_mostly; -EXPORT_SYMBOL(vmalloc_start); +void *parisc_vmalloc_start __read_mostly; +EXPORT_SYMBOL(parisc_vmalloc_start); #ifdef CONFIG_PA11 unsigned long pcxl_dma_start __read_mostly; @@ -496,13 +496,14 @@ void __init mem_init(void) #ifdef CONFIG_PA11 if (hppa_dma_ops == &pcxl_dma_ops) { pcxl_dma_start = (unsigned long)SET_MAP_OFFSET(MAP_START); - vmalloc_start = SET_MAP_OFFSET(pcxl_dma_start + PCXL_DMA_MAP_SIZE); + parisc_vmalloc_start = SET_MAP_OFFSET(pcxl_dma_start + + PCXL_DMA_MAP_SIZE); } else { pcxl_dma_start = 0; - vmalloc_start = SET_MAP_OFFSET(MAP_START); + parisc_vmalloc_start = SET_MAP_OFFSET(MAP_START); } #else - vmalloc_start = SET_MAP_OFFSET(MAP_START); + parisc_vmalloc_start = SET_MAP_OFFSET(MAP_START); #endif printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init)\n", |