diff options
63 files changed, 512 insertions, 812 deletions
diff --git a/arch/um/drivers/harddog_user.c b/arch/um/drivers/harddog_user.c index b050e26..19ea26f 100644 --- a/arch/um/drivers/harddog_user.c +++ b/arch/um/drivers/harddog_user.c @@ -9,7 +9,6 @@ #include "user.h" #include "mconsole.h" #include "os.h" -#include "mode.h" struct dog_data { int stdin; diff --git a/arch/um/include/arch.h b/arch/um/include/arch.h index 10ad52d..49c601ff 100644 --- a/arch/um/include/arch.h +++ b/arch/um/include/arch.h @@ -9,7 +9,7 @@ #include "sysdep/ptrace.h" extern void arch_check_bugs(void); -extern int arch_fixup(unsigned long address, union uml_pt_regs *regs); -extern int arch_handle_signal(int sig, union uml_pt_regs *regs); +extern int arch_fixup(unsigned long address, struct uml_pt_regs *regs); +extern int arch_handle_signal(int sig, struct uml_pt_regs *regs); #endif diff --git a/arch/um/include/as-layout.h b/arch/um/include/as-layout.h index e44f329..2f16a1c 100644 --- a/arch/um/include/as-layout.h +++ b/arch/um/include/as-layout.h @@ -29,6 +29,6 @@ extern unsigned long brk_start; extern int linux_main(int argc, char **argv); -extern void (*sig_info[])(int, union uml_pt_regs *); +extern void (*sig_info[])(int, struct uml_pt_regs *); #endif diff --git a/arch/um/include/irq_user.h b/arch/um/include/irq_user.h index 741cb7d..e16ebce 100644 --- a/arch/um/include/irq_user.h +++ b/arch/um/include/irq_user.h @@ -21,7 +21,7 @@ struct irq_fd { enum { IRQ_READ, IRQ_WRITE }; -extern void sigio_handler(int sig, union uml_pt_regs *regs); +extern void sigio_handler(int sig, struct uml_pt_regs *regs); extern int activate_fd(int irq, int fd, int type, void *dev_id); extern void free_irq_by_irq_and_dev(unsigned int irq, void *dev_id); extern void free_irq_by_fd(int fd); diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h index 578156d..9d3110f 100644 --- a/arch/um/include/kern_util.h +++ b/arch/um/include/kern_util.h @@ -10,7 +10,7 @@ #include "sysdep/faultinfo.h" #include "uml-config.h" -typedef void (*kern_hndl)(int, union uml_pt_regs *); +typedef void (*kern_hndl)(int, struct uml_pt_regs *); struct kern_handlers { kern_hndl relay_signal; @@ -41,7 +41,7 @@ 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(struct faultinfo fi, unsigned long ip, - int is_user, union uml_pt_regs *regs); + int is_user, struct uml_pt_regs *regs); 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); @@ -54,7 +54,7 @@ extern int need_finish_fork(void); extern void free_stack(unsigned long stack, int order); extern void add_input_request(int op, void (*proc)(int), void *arg); extern char *current_cmd(void); -extern void timer_handler(int sig, union uml_pt_regs *regs); +extern void timer_handler(int sig, struct uml_pt_regs *regs); extern int set_signals(int enable); extern int pid_to_processor_id(int pid); extern void deliver_signals(void *t); @@ -64,9 +64,9 @@ extern void finish_fork(void); extern void paging_init(void); extern void init_flush_vm(void); extern void *syscall_sp(void *t); -extern void syscall_trace(union uml_pt_regs *regs, int entryexit); +extern void syscall_trace(struct uml_pt_regs *regs, int entryexit); extern int hz(void); -extern unsigned int do_IRQ(int irq, union uml_pt_regs *regs); +extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs); extern void interrupt_end(void); extern void initial_thread_cb(void (*proc)(void *), void *arg); extern int debugger_signal(int status, int pid); @@ -76,9 +76,9 @@ extern int init_ptrace_proxy(int idle_pid, int startup, int stop); extern int init_parent_proxy(int pid); extern int singlestepping(void *t); extern void check_stack_overflow(void *ptr); -extern void relay_signal(int sig, union uml_pt_regs *regs); +extern void relay_signal(int sig, struct uml_pt_regs *regs); extern int user_context(unsigned long sp); -extern void timer_irq(union uml_pt_regs *regs); +extern void timer_irq(struct uml_pt_regs *regs); extern void do_uml_exitcalls(void); extern int attach_debugger(int idle_pid, int pid, int stop); extern int config_gdb(char *str); @@ -109,11 +109,9 @@ extern void time_init_kern(void); /* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */ extern int __cant_sleep(void); -extern void sigio_handler(int sig, union uml_pt_regs *regs); - -extern void copy_sc(union uml_pt_regs *regs, void *from); - +extern void sigio_handler(int sig, struct uml_pt_regs *regs); +extern void copy_sc(struct uml_pt_regs *regs, void *from); extern unsigned long to_irq_stack(unsigned long *mask_out); unsigned long from_irq_stack(int nested); - +extern int start_uml(void); #endif diff --git a/arch/um/include/mconsole.h b/arch/um/include/mconsole.h index b282839..a2c35fe 100644 --- a/arch/um/include/mconsole.h +++ b/arch/um/include/mconsole.h @@ -63,7 +63,7 @@ struct mc_request struct mconsole_request request; struct mconsole_command *cmd; - union uml_pt_regs regs; + struct uml_pt_regs regs; }; extern char mconsole_socket_name[]; diff --git a/arch/um/include/mode.h b/arch/um/include/mode.h deleted file mode 100644 index fcce95c..0000000 --- a/arch/um/include/mode.h +++ /dev/null @@ -1,11 +0,0 @@ -/* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#ifndef __MODE_H__ -#define __MODE_H__ - -#include "mode-skas.h" - -#endif diff --git a/arch/um/include/mode_kern.h b/arch/um/include/mode_kern.h deleted file mode 100644 index b2a44c0..0000000 --- a/arch/um/include/mode_kern.h +++ /dev/null @@ -1,11 +0,0 @@ -/* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#ifndef __MODE_KERN_H__ -#define __MODE_KERN_H__ - -#include "mode_kern_skas.h" - -#endif diff --git a/arch/um/include/os.h b/arch/um/include/os.h index 208d9b9..daf1888 100644 --- a/arch/um/include/os.h +++ b/arch/um/include/os.h @@ -281,9 +281,9 @@ extern int protect(struct mm_id * mm_idp, unsigned long addr, extern int is_skas_winch(int pid, int fd, void *data); extern int start_userspace(unsigned long stub_stack); extern int copy_context_skas0(unsigned long stack, int pid); -extern void save_registers(int pid, union uml_pt_regs *regs); -extern void restore_registers(int pid, union uml_pt_regs *regs); -extern void userspace(union uml_pt_regs *regs); +extern void save_registers(int pid, struct uml_pt_regs *regs); +extern void restore_registers(int pid, struct uml_pt_regs *regs); +extern void userspace(struct uml_pt_regs *regs); extern void map_stub_pages(int fd, unsigned long code, unsigned long data, unsigned long stack); extern void new_thread(void *stack, jmp_buf *buf, void (*handler)(void)); diff --git a/arch/um/include/registers.h b/arch/um/include/registers.h index b7d2c4e..8e8ea96 100644 --- a/arch/um/include/registers.h +++ b/arch/um/include/registers.h @@ -9,11 +9,11 @@ #include "sysdep/ptrace.h" #include "sysdep/archsetjmp.h" -extern void init_thread_registers(union uml_pt_regs *to); +extern void init_thread_registers(struct uml_pt_regs *to); extern int save_fp_registers(int pid, unsigned long *fp_regs); extern int restore_fp_registers(int pid, unsigned long *fp_regs); -extern void save_registers(int pid, union uml_pt_regs *regs); -extern void restore_registers(int pid, union uml_pt_regs *regs); +extern void save_registers(int pid, struct uml_pt_regs *regs); +extern void restore_registers(int pid, struct uml_pt_regs *regs); extern void init_registers(int pid); extern void get_safe_registers(unsigned long *regs); extern unsigned long get_thread_reg(int reg, jmp_buf *buf); diff --git a/arch/um/include/skas/mmu-skas.h b/arch/um/include/skas/mmu-skas.h index b26986c..838dfd7 100644 --- a/arch/um/include/skas/mmu-skas.h +++ b/arch/um/include/skas/mmu-skas.h @@ -18,6 +18,6 @@ struct mmu_context_skas { uml_ldt_t ldt; }; -extern void switch_mm_skas(struct mm_id * mm_idp); +extern void __switch_mm(struct mm_id * mm_idp); #endif diff --git a/arch/um/include/skas/mode_kern_skas.h b/arch/um/include/skas/mode_kern_skas.h deleted file mode 100644 index c294851..0000000 --- a/arch/um/include/skas/mode_kern_skas.h +++ /dev/null @@ -1,42 +0,0 @@ -/* - * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{linux.intel,addtoit}.com) - * Licensed under the GPL - */ - -#ifndef __SKAS_MODE_KERN_H__ -#define __SKAS_MODE_KERN_H__ - -#include "linux/sched.h" -#include "asm/page.h" -#include "asm/ptrace.h" -#include "mem_user.h" - -extern void flush_thread_skas(void); -extern void switch_to_skas(void *prev, void *next); -extern void start_thread_skas(struct pt_regs *regs, unsigned long eip, - unsigned long esp); -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 init_idle_skas(void); -extern void flush_tlb_kernel_range_skas(unsigned long start, - unsigned long end); -extern void flush_tlb_kernel_vm_skas(void); -extern void __flush_tlb_one_skas(unsigned long addr); -extern void flush_tlb_range_skas(struct vm_area_struct *vma, - unsigned long start, unsigned long end); -extern void flush_tlb_mm_skas(struct mm_struct *mm); -extern void force_flush_all_skas(void); -extern long execute_syscall_skas(void *r); -extern void before_mem_skas(unsigned long unused); -extern unsigned long set_task_sizes_skas(unsigned long *task_size_out); -extern int start_uml_skas(void); -extern int external_pid_skas(struct task_struct *task); -extern int thread_pid_skas(struct task_struct *task); -extern void flush_tlb_page_skas(struct vm_area_struct *vma, - unsigned long address); - -#define kmem_end_skas (host_task_size - 1024 * 1024) - -#endif diff --git a/arch/um/include/skas/skas.h b/arch/um/include/skas/skas.h index e88926b..b4a95e4 100644 --- a/arch/um/include/skas/skas.h +++ b/arch/um/include/skas/skas.h @@ -15,7 +15,7 @@ extern int skas_needs_stub; extern int user_thread(unsigned long stack, int flags); extern void new_thread_handler(void); -extern void handle_syscall(union uml_pt_regs *regs); +extern void handle_syscall(struct uml_pt_regs *regs); extern int new_mm(unsigned long stack); extern void get_skas_faultinfo(int pid, struct faultinfo * fi); extern long execute_syscall_skas(void *r); diff --git a/arch/um/include/sysdep-i386/ptrace.h b/arch/um/include/sysdep-i386/ptrace.h index 4557308..d765175 100644 --- a/arch/um/include/sysdep-i386/ptrace.h +++ b/arch/um/include/sysdep-i386/ptrace.h @@ -52,37 +52,34 @@ extern int sysemu_supported; #define PTRACE_SYSEMU_SINGLESTEP 32 #endif -union uml_pt_regs { - struct skas_regs { - unsigned long regs[MAX_REG_NR]; - unsigned long fp[HOST_FP_SIZE]; - unsigned long xfp[HOST_XFP_SIZE]; - struct faultinfo faultinfo; - long syscall; - int is_user; - } skas; +struct uml_pt_regs { + unsigned long regs[MAX_REG_NR]; + unsigned long fp[HOST_FP_SIZE]; + unsigned long xfp[HOST_XFP_SIZE]; + struct faultinfo faultinfo; + long syscall; + int is_user; }; #define EMPTY_UML_PT_REGS { } -#define UPT_SC(r) ((r)->tt.sc) -#define UPT_IP(r) REGS_IP((r)->skas.regs) -#define UPT_SP(r) REGS_SP((r)->skas.regs) -#define UPT_EFLAGS(r) REGS_EFLAGS((r)->skas.regs) -#define UPT_EAX(r) REGS_EAX((r)->skas.regs) -#define UPT_EBX(r) REGS_EBX((r)->skas.regs) -#define UPT_ECX(r) REGS_ECX((r)->skas.regs) -#define UPT_EDX(r) REGS_EDX((r)->skas.regs) -#define UPT_ESI(r) REGS_ESI((r)->skas.regs) -#define UPT_EDI(r) REGS_EDI((r)->skas.regs) -#define UPT_EBP(r) REGS_EBP((r)->skas.regs) -#define UPT_ORIG_EAX(r) ((r)->skas.syscall) -#define UPT_CS(r) REGS_CS((r)->skas.regs) -#define UPT_SS(r) REGS_SS((r)->skas.regs) -#define UPT_DS(r) REGS_DS((r)->skas.regs) -#define UPT_ES(r) REGS_ES((r)->skas.regs) -#define UPT_FS(r) REGS_FS((r)->skas.regs) -#define UPT_GS(r) REGS_GS((r)->skas.regs) +#define UPT_IP(r) REGS_IP((r)->regs) +#define UPT_SP(r) REGS_SP((r)->regs) +#define UPT_EFLAGS(r) REGS_EFLAGS((r)->regs) +#define UPT_EAX(r) REGS_EAX((r)->regs) +#define UPT_EBX(r) REGS_EBX((r)->regs) +#define UPT_ECX(r) REGS_ECX((r)->regs) +#define UPT_EDX(r) REGS_EDX((r)->regs) +#define UPT_ESI(r) REGS_ESI((r)->regs) +#define UPT_EDI(r) REGS_EDI((r)->regs) +#define UPT_EBP(r) REGS_EBP((r)->regs) +#define UPT_ORIG_EAX(r) ((r)->syscall) +#define UPT_CS(r) REGS_CS((r)->regs) +#define UPT_SS(r) REGS_SS((r)->regs) +#define UPT_DS(r) REGS_DS((r)->regs) +#define UPT_ES(r) REGS_ES((r)->regs) +#define UPT_FS(r) REGS_FS((r)->regs) +#define UPT_GS(r) REGS_GS((r)->regs) #define UPT_SYSCALL_ARG1(r) UPT_EBX(r) #define UPT_SYSCALL_ARG2(r) UPT_ECX(r) @@ -93,7 +90,7 @@ union uml_pt_regs { extern int user_context(unsigned long sp); -#define UPT_IS_USER(r) ((r)->skas.is_user) +#define UPT_IS_USER(r) ((r)->is_user) struct syscall_args { unsigned long args[6]; @@ -162,14 +159,14 @@ struct syscall_args { } while (0) #define UPT_SET_SYSCALL_RETURN(r, res) \ - REGS_SET_SYSCALL_RETURN((r)->skas.regs, (res)) + REGS_SET_SYSCALL_RETURN((r)->regs, (res)) -#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->skas.regs) +#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->regs) #define UPT_ORIG_SYSCALL(r) UPT_EAX(r) #define UPT_SYSCALL_NR(r) UPT_ORIG_EAX(r) #define UPT_SYSCALL_RET(r) UPT_EAX(r) -#define UPT_FAULTINFO(r) (&(r)->skas.faultinfo) +#define UPT_FAULTINFO(r) (&(r)->faultinfo) #endif diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h index b3412b6..ea4afdc 100644 --- a/arch/um/include/sysdep-x86_64/ptrace.h +++ b/arch/um/include/sysdep-x86_64/ptrace.h @@ -84,58 +84,52 @@ #define REGS_ERR(r) ((r)->fault_type) -/* XXX */ -union uml_pt_regs { - struct skas_regs { - unsigned long regs[MAX_REG_NR]; - unsigned long fp[HOST_FP_SIZE]; - struct faultinfo faultinfo; - long syscall; - int is_user; - } skas; +struct uml_pt_regs { + unsigned long regs[MAX_REG_NR]; + unsigned long fp[HOST_FP_SIZE]; + struct faultinfo faultinfo; + long syscall; + int is_user; }; #define EMPTY_UML_PT_REGS { } -#define UPT_RBX(r) REGS_RBX((r)->skas.regs) -#define UPT_RCX(r) REGS_RCX((r)->skas.regs) -#define UPT_RDX(r) REGS_RDX((r)->skas.regs) -#define UPT_RSI(r) REGS_RSI((r)->skas.regs) -#define UPT_RDI(r) REGS_RDI((r)->skas.regs) -#define UPT_RBP(r) REGS_RBP((r)->skas.regs) -#define UPT_RAX(r) REGS_RAX((r)->skas.regs) -#define UPT_R8(r) REGS_R8((r)->skas.regs) -#define UPT_R9(r) REGS_R9((r)->skas.regs) -#define UPT_R10(r) REGS_R10((r)->skas.regs) -#define UPT_R11(r) REGS_R11((r)->skas.regs) -#define UPT_R12(r) REGS_R12((r)->skas.regs) -#define UPT_R13(r) REGS_R13((r)->skas.regs) -#define UPT_R14(r) REGS_R14((r)->skas.regs) -#define UPT_R15(r) REGS_R15((r)->skas.regs) -#define UPT_CS(r) REGS_CS((r)->skas.regs) -#define UPT_FS_BASE(r) \ - REGS_FS_BASE((r)->skas.regs) -#define UPT_FS(r) REGS_FS((r)->skas.regs) -#define UPT_GS_BASE(r) \ - REGS_GS_BASE((r)->skas.regs) -#define UPT_GS(r) REGS_GS((r)->skas.regs) -#define UPT_DS(r) REGS_DS((r)->skas.regs) -#define UPT_ES(r) REGS_ES((r)->skas.regs) -#define UPT_CS(r) REGS_CS((r)->skas.regs) -#define UPT_SS(r) REGS_SS((r)->skas.regs) -#define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->skas.regs) - -#define UPT_IP(r) REGS_IP((r)->skas.regs) -#define UPT_SP(r) REGS_SP((r)->skas.regs) - -#define UPT_EFLAGS(r) REGS_EFLAGS((r)->skas.regs) -#define UPT_SC(r) ((r)->tt.sc) -#define UPT_SYSCALL_NR(r) ((r)->skas.syscall) +#define UPT_RBX(r) REGS_RBX((r)->regs) +#define UPT_RCX(r) REGS_RCX((r)->regs) +#define UPT_RDX(r) REGS_RDX((r)->regs) +#define UPT_RSI(r) REGS_RSI((r)->regs) +#define UPT_RDI(r) REGS_RDI((r)->regs) +#define UPT_RBP(r) REGS_RBP((r)->regs) +#define UPT_RAX(r) REGS_RAX((r)->regs) +#define UPT_R8(r) REGS_R8((r)->regs) +#define UPT_R9(r) REGS_R9((r)->regs) +#define UPT_R10(r) REGS_R10((r)->regs) +#define UPT_R11(r) REGS_R11((r)->regs) +#define UPT_R12(r) REGS_R12((r)->regs) +#define UPT_R13(r) REGS_R13((r)->regs) +#define UPT_R14(r) REGS_R14((r)->regs) +#define UPT_R15(r) REGS_R15((r)->regs) +#define UPT_CS(r) REGS_CS((r)->regs) +#define UPT_FS_BASE(r) REGS_FS_BASE((r)->regs) +#define UPT_FS(r) REGS_FS((r)->regs) +#define UPT_GS_BASE(r) REGS_GS_BASE((r)->regs) +#define UPT_GS(r) REGS_GS((r)->regs) +#define UPT_DS(r) REGS_DS((r)->regs) +#define UPT_ES(r) REGS_ES((r)->regs) +#define UPT_CS(r) REGS_CS((r)->regs) +#define UPT_SS(r) REGS_SS((r)->regs) +#define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->regs) + +#define UPT_IP(r) REGS_IP((r)->regs) +#define UPT_SP(r) REGS_SP((r)->regs) + +#define UPT_EFLAGS(r) REGS_EFLAGS((r)->regs) +#define UPT_SYSCALL_NR(r) ((r)->syscall) #define UPT_SYSCALL_RET(r) UPT_RAX(r) extern int user_context(unsigned long sp); -#define UPT_IS_USER(r) ((r)->skas.is_user) +#define UPT_IS_USER(r) ((r)->is_user) #define UPT_SYSCALL_ARG1(r) UPT_RDI(r) #define UPT_SYSCALL_ARG2(r) UPT_RSI(r) @@ -232,12 +226,12 @@ struct syscall_args { }) #define UPT_SET_SYSCALL_RETURN(r, res) \ - REGS_SET_SYSCALL_RETURN((r)->skas.regs, (res)) + REGS_SET_SYSCALL_RETURN((r)->regs, (res)) -#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->skas.regs) +#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->regs) #define UPT_SEGV_IS_FIXABLE(r) REGS_SEGV_IS_FIXABLE(&r->skas) -#define UPT_FAULTINFO(r) (&(r)->skas.faultinfo) +#define UPT_FAULTINFO(r) (&(r)->faultinfo) #endif diff --git a/arch/um/include/task.h b/arch/um/include/task.h index 6375ba7..3fe726b 100644 --- a/arch/um/include/task.h +++ b/arch/um/include/task.h @@ -3,7 +3,7 @@ #include <kern_constants.h> -#define TASK_REGS(task) ((union uml_pt_regs *) &(((char *) (task))[HOST_TASK_REGS])) +#define TASK_REGS(task) ((struct uml_pt_regs *) &(((char *) (task))[HOST_TASK_REGS])) #define TASK_PID(task) *((int *) &(((char *) (task))[HOST_TASK_PID])) #endif diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c index 8f774c2..5064fb6 100644 --- a/arch/um/kernel/exec.c +++ b/arch/um/kernel/exec.c @@ -18,17 +18,31 @@ #include "irq_user.h" #include "tlb.h" #include "os.h" -#include "mode_kern.h" +#include "skas/skas.h" void flush_thread(void) { + void *data = NULL; + unsigned long end = proc_mm ? task_size : CONFIG_STUB_START; + int ret; + arch_flush_thread(¤t->thread.arch); - flush_thread_skas(); + + ret = unmap(¤t->mm->context.skas.id, 0, end, 1, &data); + if(ret){ + printk("flush_thread - clearing address space failed, " + "err = %d\n", ret); + force_sig(SIGKILL, current); + } + + __switch_mm(¤t->mm->context.skas.id); } void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp) { - start_thread_skas(regs, eip, esp); + set_fs(USER_DS); + PT_REGS_IP(regs) = eip; + PT_REGS_SP(regs) = esp; } #ifdef CONFIG_TTY_LOG diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index ec1ed68..b10ee28 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -91,7 +91,7 @@ static struct irq_fd **last_irq_ptr = &active_fds; extern void free_irqs(void); -void sigio_handler(int sig, union uml_pt_regs *regs) +void sigio_handler(int sig, struct uml_pt_regs *regs) { struct irq_fd *irq_fd; int n; @@ -344,7 +344,7 @@ int deactivate_all_fds(void) * SMP cross-CPU interrupts have their own specific * handlers). */ -unsigned int do_IRQ(int irq, union uml_pt_regs *regs) +unsigned int do_IRQ(int irq, struct uml_pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs((struct pt_regs *)regs); irq_enter(); diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c index f7b2f35..90e89e8 100644 --- a/arch/um/kernel/physmem.c +++ b/arch/um/kernel/physmem.c @@ -10,7 +10,7 @@ #include "as-layout.h" #include "init.h" #include "kern.h" -#include "mode_kern.h" +#include "mem_user.h" #include "os.h" static int physmem_fd = -1; @@ -61,7 +61,7 @@ static unsigned long kmem_top = 0; unsigned long get_kmem_end(void) { if (kmem_top == 0) - kmem_top = kmem_end_skas; + kmem_top = host_task_size - 1024 * 1024; return kmem_top; } diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index 22ad46f..d3b9c62 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -43,8 +43,7 @@ #include "frame_kern.h" #include "sigcontext.h" #include "os.h" -#include "mode.h" -#include "mode_kern.h" +#include "skas.h" /* This is a per-cpu array. A processor only modifies its entry and it only * cares about its entry, so it's OK if another processor is modifying its @@ -54,7 +53,8 @@ struct cpu_task cpu_tasks[NR_CPUS] = { [0 ... NR_CPUS - 1] = { -1, NULL } }; static inline int external_pid(struct task_struct *task) { - return external_pid_skas(task); + /* FIXME: Need to look up userspace_pid by cpu */ + return(userspace_pid[0]); } int pid_to_processor_id(int pid) @@ -104,6 +104,8 @@ static inline void set_current(struct task_struct *task) { external_pid(task), task }); } +extern void arch_switch_to(struct task_struct *from, struct task_struct *to); + void *_switch_to(void *prev, void *next, void *last) { struct task_struct *from = prev; @@ -114,7 +116,19 @@ void *_switch_to(void *prev, void *next, void *last) do { current->thread.saved_task = NULL; - switch_to_skas(prev, next); + + /* XXX need to check runqueues[cpu].idle */ + if(current->pid == 0) + switch_timers(0); + + switch_threads(&from->thread.switch_buf, + &to->thread.switch_buf); + + arch_switch_to(current->thread.prev_sched, current); + + if(current->pid == 0) + switch_timers(1); + if(current->thread.saved_task) show_regs(&(current->thread.regs)); next= current->thread.saved_task; @@ -133,11 +147,6 @@ void interrupt_end(void) do_signal(); } -void release_thread(struct task_struct *task) -{ - release_thread_skas(task); -} - void exit_thread(void) { } @@ -147,27 +156,95 @@ void *get_current(void) return current; } +extern void schedule_tail(struct task_struct *prev); + +/* This is called magically, by its address being stuffed in a jmp_buf + * and being longjmp-d to. + */ +void new_thread_handler(void) +{ + int (*fn)(void *), n; + void *arg; + + if(current->thread.prev_sched != NULL) + schedule_tail(current->thread.prev_sched); + current->thread.prev_sched = NULL; + + fn = current->thread.request.u.thread.proc; + arg = current->thread.request.u.thread.arg; + + /* The return value is 1 if the kernel thread execs a process, + * 0 if it just exits + */ + n = run_kernel_thread(fn, arg, ¤t->thread.exec_buf); + if(n == 1){ + /* Handle any immediate reschedules or signals */ + interrupt_end(); + userspace(¤t->thread.regs.regs); + } + else do_exit(0); +} + +/* Called magically, see new_thread_handler above */ +void fork_handler(void) +{ + force_flush_all(); + if(current->thread.prev_sched == NULL) + panic("blech"); + + schedule_tail(current->thread.prev_sched); + + /* XXX: if interrupt_end() calls schedule, this call to + * arch_switch_to isn't needed. We could want to apply this to + * improve performance. -bb */ + arch_switch_to(current->thread.prev_sched, current); + + current->thread.prev_sched = NULL; + + /* Handle any immediate reschedules or signals */ + interrupt_end(); + + userspace(¤t->thread.regs.regs); +} + int copy_thread(int nr, unsigned long clone_flags, unsigned long sp, unsigned long stack_top, struct task_struct * p, struct pt_regs *regs) { - int ret; + void (*handler)(void); + int ret = 0; p->thread = (struct thread_struct) INIT_THREAD; - ret = copy_thread_skas(nr, clone_flags, sp, stack_top, p, regs); - if (ret || !current->thread.forking) - goto out; + if(current->thread.forking){ + memcpy(&p->thread.regs.regs, ®s->regs, + sizeof(p->thread.regs.regs)); + REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.regs, 0); + if(sp != 0) + REGS_SP(p->thread.regs.regs.regs) = sp; - clear_flushed_tls(p); + handler = fork_handler; - /* - * Set a new TLS for the child thread? - */ - if (clone_flags & CLONE_SETTLS) - ret = arch_copy_tls(p); + arch_copy_thread(¤t->thread.arch, &p->thread.arch); + } + else { + init_thread_registers(&p->thread.regs.regs); + p->thread.request.u.thread = current->thread.request.u.thread; + handler = new_thread_handler; + } + + new_thread(task_stack_page(p), &p->thread.switch_buf, handler); + + if (current->thread.forking) { + clear_flushed_tls(p); + + /* + * Set a new TLS for the child thread? + */ + if (clone_flags & CLONE_SETTLS) + ret = arch_copy_tls(p); + } -out: return ret; } @@ -198,7 +275,8 @@ void default_idle(void) void cpu_idle(void) { - init_idle_skas(); + cpu_tasks[current_thread->cpu].pid = os_getpid(); + default_idle(); } void *um_virt_to_phys(struct task_struct *task, unsigned long addr, diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index 36debc0..bbc3a4a 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -228,7 +228,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) #ifdef PTRACE_ARCH_PRCTL case PTRACE_ARCH_PRCTL: /* XXX Calls ptrace on the host - needs some SMP thinking */ - ret = arch_prctl_skas(child, data, (void *) addr); + ret = arch_prctl(child, data, (void *) addr); break; #endif default: @@ -239,7 +239,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) return ret; } -void send_sigtrap(struct task_struct *tsk, union uml_pt_regs *regs, +void send_sigtrap(struct task_struct *tsk, struct uml_pt_regs *regs, int error_code) { struct siginfo info; @@ -258,7 +258,7 @@ void send_sigtrap(struct task_struct *tsk, union uml_pt_regs *regs, /* XXX Check PT_DTRACE vs TIF_SINGLESTEP for singlestepping check and * PT_PTRACED vs TIF_SYSCALL_TRACE for syscall tracing check */ -void syscall_trace(union uml_pt_regs *regs, int entryexit) +void syscall_trace(struct uml_pt_regs *regs, int entryexit) { int is_singlestep = (current->ptrace & PT_DTRACE) && entryexit; int tracesysgood; diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c index 4a0def3..f3bd18b 100644 --- a/arch/um/kernel/reboot.c +++ b/arch/um/kernel/reboot.c @@ -9,13 +9,30 @@ #include "kern_util.h" #include "kern.h" #include "os.h" -#include "mode.h" +#include "skas.h" void (*pm_power_off)(void); static void kill_off_processes(void) { - kill_off_processes_skas(); + if(proc_mm) + /* + * FIXME: need to loop over userspace_pids + */ + os_kill_ptraced_process(userspace_pid[0], 1); + else { + struct task_struct *p; + int pid, me; + + me = os_getpid(); + for_each_process(p){ + if(p->mm == NULL) + continue; + + pid = p->mm->context.skas.id.u.pid; + os_kill_ptraced_process(pid, 1); + } + } } void uml_cleanup(void) diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c index c4020c3..4dab7e4 100644 --- a/arch/um/kernel/signal.c +++ b/arch/um/kernel/signal.c @@ -23,7 +23,6 @@ #include "kern.h" #include "frame_kern.h" #include "sigcontext.h" -#include "mode.h" EXPORT_SYMBOL(block_signals); EXPORT_SYMBOL(unblock_signals); diff --git a/arch/um/kernel/skas/Makefile b/arch/um/kernel/skas/Makefile index 3e3fa7e..b2823cd 100644 --- a/arch/um/kernel/skas/Makefile +++ b/arch/um/kernel/skas/Makefile @@ -3,7 +3,7 @@ # Licensed under the GPL # -obj-y := clone.o exec.o mem.o mmu.o process.o syscall.o tlb.o uaccess.o +obj-y := clone.o mmu.o process.o syscall.o uaccess.o # clone.o is in the stub, so it can't be built with profiling # GCC hardened also auto-enables -fpic, but we need %ebx so it can't work -> diff --git a/arch/um/kernel/skas/exec.c b/arch/um/kernel/skas/exec.c deleted file mode 100644 index 580eb64..0000000 --- a/arch/um/kernel/skas/exec.c +++ /dev/null @@ -1,40 +0,0 @@ -/* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#include "linux/kernel.h" -#include "asm/current.h" -#include "asm/page.h" -#include "asm/signal.h" -#include "asm/ptrace.h" -#include "asm/uaccess.h" -#include "asm/mmu_context.h" -#include "tlb.h" -#include "skas.h" -#include "um_mmu.h" -#include "os.h" - -void flush_thread_skas(void) -{ - void *data = NULL; - unsigned long end = proc_mm ? task_size : CONFIG_STUB_START; - int ret; - - ret = unmap(¤t->mm->context.skas.id, 0, end, 1, &data); - if(ret){ - printk("flush_thread_skas - clearing address space failed, " - "err = %d\n", ret); - force_sig(SIGKILL, current); - } - - switch_mm_skas(¤t->mm->context.skas.id); -} - -void start_thread_skas(struct pt_regs *regs, unsigned long eip, - unsigned long esp) -{ - set_fs(USER_DS); - PT_REGS_IP(regs) = eip; - PT_REGS_SP(regs) = esp; -} diff --git a/arch/um/kernel/skas/mem.c b/arch/um/kernel/skas/mem.c deleted file mode 100644 index 7c18dfc..0000000 --- a/arch/um/kernel/skas/mem.c +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#include "linux/mm.h" -#include "asm/pgtable.h" -#include "mem_user.h" -#include "skas.h" - -unsigned long set_task_sizes_skas(unsigned long *task_size_out) -{ - /* Round up to the nearest 4M */ - unsigned long host_task_size = ROUND_4M((unsigned long) - &host_task_size); - - if (!skas_needs_stub) - *task_size_out = host_task_size; - else *task_size_out = CONFIG_STUB_START & PGDIR_MASK; - - return host_task_size; -} diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c index 2c6d090..902d741 100644 --- a/arch/um/kernel/skas/mmu.c +++ b/arch/um/kernel/skas/mmu.c @@ -71,7 +71,7 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc, return(-ENOMEM); } -int init_new_context_skas(struct task_struct *task, struct mm_struct *mm) +int init_new_context(struct task_struct *task, struct mm_struct *mm) { struct mmu_context_skas *from_mm = NULL; struct mmu_context_skas *to_mm = &mm->context.skas; @@ -137,7 +137,7 @@ int init_new_context_skas(struct task_struct *task, struct mm_struct *mm) return ret; } -void destroy_context_skas(struct mm_struct *mm) +void destroy_context(struct mm_struct *mm) { struct mmu_context_skas *mmu = &mm->context.skas; diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c index 48051a9..dabae62 100644 --- a/arch/um/kernel/skas/process.c +++ b/arch/um/kernel/skas/process.c @@ -18,129 +18,22 @@ #include "os.h" #include "tlb.h" #include "kern.h" -#include "mode.h" #include "registers.h" -void switch_to_skas(void *prev, void *next) -{ - struct task_struct *from, *to; - - from = prev; - to = next; - - /* XXX need to check runqueues[cpu].idle */ - if(current->pid == 0) - switch_timers(0); - - switch_threads(&from->thread.mode.skas.switch_buf, - &to->thread.mode.skas.switch_buf); - - arch_switch_to_skas(current->thread.prev_sched, current); - - if(current->pid == 0) - switch_timers(1); -} - extern void schedule_tail(struct task_struct *prev); -/* This is called magically, by its address being stuffed in a jmp_buf - * and being longjmp-d to. - */ -void new_thread_handler(void) -{ - int (*fn)(void *), n; - void *arg; - - if(current->thread.prev_sched != NULL) - schedule_tail(current->thread.prev_sched); - current->thread.prev_sched = NULL; - - fn = current->thread.request.u.thread.proc; - arg = current->thread.request.u.thread.arg; - - /* The return value is 1 if the kernel thread execs a process, - * 0 if it just exits - */ - n = run_kernel_thread(fn, arg, ¤t->thread.exec_buf); - if(n == 1){ - /* Handle any immediate reschedules or signals */ - interrupt_end(); - userspace(¤t->thread.regs.regs); - } - else do_exit(0); -} - -void release_thread_skas(struct task_struct *task) -{ -} - -/* Called magically, see new_thread_handler above */ -void fork_handler(void) -{ - force_flush_all(); - if(current->thread.prev_sched == NULL) - panic("blech"); - - schedule_tail(current->thread.prev_sched); - - /* XXX: if interrupt_end() calls schedule, this call to - * arch_switch_to_skas isn't needed. We could want to apply this to - * improve performance. -bb */ - arch_switch_to_skas(current->thread.prev_sched, current); - - current->thread.prev_sched = NULL; - -/* Handle any immediate reschedules or signals */ - interrupt_end(); - - userspace(¤t->thread.regs.regs); -} - -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) -{ - void (*handler)(void); - - if(current->thread.forking){ - memcpy(&p->thread.regs.regs.skas, ®s->regs.skas, - sizeof(p->thread.regs.regs.skas)); - REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.skas.regs, 0); - if(sp != 0) REGS_SP(p->thread.regs.regs.skas.regs) = sp; - - handler = fork_handler; - - arch_copy_thread(¤t->thread.arch, &p->thread.arch); - } - else { - init_thread_registers(&p->thread.regs.regs); - p->thread.request.u.thread = current->thread.request.u.thread; - handler = new_thread_handler; - } - - new_thread(task_stack_page(p), &p->thread.mode.skas.switch_buf, - handler); - return(0); -} - int new_mm(unsigned long stack) { int fd; fd = os_open_file("/proc/mm", of_cloexec(of_write(OPENFLAGS())), 0); if(fd < 0) - return(fd); + return fd; if(skas_needs_stub) map_stub_pages(fd, CONFIG_STUB_CODE, CONFIG_STUB_DATA, stack); - return(fd); -} - -void init_idle_skas(void) -{ - cpu_tasks[current_thread->cpu].pid = os_getpid(); - default_idle(); + return fd; } extern void start_kernel(void); @@ -158,14 +51,14 @@ static int __init start_kernel_proc(void *unused) cpu_online_map = cpumask_of_cpu(0); #endif start_kernel(); - return(0); + return 0; } extern int userspace_pid[]; extern char cpu0_irqstack[]; -int __init start_uml_skas(void) +int __init start_uml(void) { stack_protections((unsigned long) &cpu0_irqstack); set_sigstack(cpu0_irqstack, THREAD_SIZE); @@ -176,49 +69,14 @@ int __init start_uml_skas(void) init_task.thread.request.u.thread.proc = start_kernel_proc; init_task.thread.request.u.thread.arg = NULL; - return(start_idle_thread(task_stack_page(&init_task), - &init_task.thread.mode.skas.switch_buf)); -} - -int external_pid_skas(struct task_struct *task) -{ - /* FIXME: Need to look up userspace_pid by cpu */ - return(userspace_pid[0]); -} - -int thread_pid_skas(struct task_struct *task) -{ - /* FIXME: Need to look up userspace_pid by cpu */ - return(userspace_pid[0]); -} - -void kill_off_processes_skas(void) -{ - if(proc_mm) - /* - * FIXME: need to loop over userspace_pids in - * kill_off_processes_skas - */ - os_kill_ptraced_process(userspace_pid[0], 1); - else { - struct task_struct *p; - int pid, me; - - me = os_getpid(); - for_each_process(p){ - if(p->mm == NULL) - continue; - - pid = p->mm->context.skas.id.u.pid; - os_kill_ptraced_process(pid, 1); - } - } + return start_idle_thread(task_stack_page(&init_task), + &init_task.thread.switch_buf); } unsigned long current_stub_stack(void) { if(current->mm == NULL) - return(0); + return 0; - return(current->mm->context.skas.id.stack); + return current->mm->context.skas.id.stack; } diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c index 0ae4eea..e183da6 100644 --- a/arch/um/kernel/skas/syscall.c +++ b/arch/um/kernel/skas/syscall.c @@ -13,7 +13,7 @@ #include "kern_util.h" #include "syscall.h" -void handle_syscall(union uml_pt_regs *r) +void handle_syscall(struct uml_pt_regs *r) { struct pt_regs *regs = container_of(r, struct pt_regs, regs); long result; @@ -37,7 +37,7 @@ void handle_syscall(union uml_pt_regs *r) result = -ENOSYS; else result = EXECUTE_SYSCALL(syscall, regs); - REGS_SET_SYSCALL_RETURN(r->skas.regs, result); + REGS_SET_SYSCALL_RETURN(r->regs, result); syscall_trace(r, 1); } diff --git a/arch/um/kernel/skas/tlb.c b/arch/um/kernel/skas/tlb.c deleted file mode 100644 index c0f0693..0000000 --- a/arch/um/kernel/skas/tlb.c +++ /dev/null @@ -1,164 +0,0 @@ -/* - * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) - * Copyright 2003 PathScale, Inc. - * Licensed under the GPL - */ - -#include "linux/stddef.h" -#include "linux/sched.h" -#include "linux/mm.h" -#include "asm/page.h" -#include "asm/pgtable.h" -#include "asm/mmu.h" -#include "mem_user.h" -#include "mem.h" -#include "skas.h" -#include "os.h" -#include "tlb.h" - -static int do_ops(union mm_context *mmu, struct host_vm_op *ops, int last, - int finished, void **flush) -{ - struct host_vm_op *op; - int i, ret = 0; - - for(i = 0; i <= last && !ret; i++){ - op = &ops[i]; - switch(op->type){ - case MMAP: - ret = map(&mmu->skas.id, op->u.mmap.addr, - op->u.mmap.len, op->u.mmap.prot, - op->u.mmap.fd, op->u.mmap.offset, finished, - flush); - break; - case MUNMAP: - ret = unmap(&mmu->skas.id, op->u.munmap.addr, - op->u.munmap.len, finished, flush); - break; - case MPROTECT: - ret = protect(&mmu->skas.id, op->u.mprotect.addr, - op->u.mprotect.len, op->u.mprotect.prot, - finished, flush); - break; - default: - printk("Unknown op type %d in do_ops\n", op->type); - break; - } - } - - return ret; -} - -extern int proc_mm; - -static void fix_range(struct mm_struct *mm, unsigned long start_addr, - unsigned long end_addr, int force) -{ - if(!proc_mm && (end_addr > CONFIG_STUB_START)) - end_addr = CONFIG_STUB_START; - - fix_range_common(mm, start_addr, end_addr, force, do_ops); -} - -void __flush_tlb_one_skas(unsigned long addr) -{ - flush_tlb_kernel_range_common(addr, addr + PAGE_SIZE); -} - -void flush_tlb_range_skas(struct vm_area_struct *vma, unsigned long start, - unsigned long end) -{ - if(vma->vm_mm == NULL) - flush_tlb_kernel_range_common(start, end); - else fix_range(vma->vm_mm, start, end, 0); -} - -void flush_tlb_mm_skas(struct mm_struct *mm) -{ - unsigned long end; - - /* Don't bother flushing if this address space is about to be - * destroyed. - */ - if(atomic_read(&mm->mm_users) == 0) - return; - - end = proc_mm ? task_size : CONFIG_STUB_START; - fix_range(mm, 0, end, 0); -} - -void force_flush_all_skas(void) -{ - struct mm_struct *mm = current->mm; - struct vm_area_struct *vma = mm->mmap; - - while(vma != NULL) { - fix_range(mm, vma->vm_start, vma->vm_end, 1); - vma = vma->vm_next; - } -} - -void flush_tlb_page_skas(struct vm_area_struct *vma, unsigned long address) -{ - pgd_t *pgd; - pud_t *pud; - pmd_t *pmd; - pte_t *pte; - struct mm_struct *mm = vma->vm_mm; - void *flush = NULL; - int r, w, x, prot, err = 0; - struct mm_id *mm_id; - - pgd = pgd_offset(mm, address); - if(!pgd_present(*pgd)) - goto kill; - - pud = pud_offset(pgd, address); - if(!pud_present(*pud)) - goto kill; - - pmd = pmd_offset(pud, address); - if(!pmd_present(*pmd)) - goto kill; - - pte = pte_offset_kernel(pmd, address); - - r = pte_read(*pte); - w = pte_write(*pte); - x = pte_exec(*pte); - if (!pte_young(*pte)) { - r = 0; - w = 0; - } else if (!pte_dirty(*pte)) { - w = 0; - } - - mm_id = &mm->context.skas.id; - prot = ((r ? UM_PROT_READ : 0) | (w ? UM_PROT_WRITE : 0) | - (x ? UM_PROT_EXEC : 0)); - if(pte_newpage(*pte)){ - if(pte_present(*pte)){ - unsigned long long offset; - int fd; - - fd = phys_mapping(pte_val(*pte) & PAGE_MASK, &offset); - err = map(mm_id, address, PAGE_SIZE, prot, fd, offset, - 1, &flush); - } - else err = unmap(mm_id, address, PAGE_SIZE, 1, &flush); - } - else if(pte_newprot(*pte)) - err = protect(mm_id, address, PAGE_SIZE, prot, 1, &flush); - - if(err) - goto kill; - - *pte = pte_mkuptodate(*pte); - - return; - -kill: - printk("Failed to flush page for address 0x%lx\n", address); - force_sig(SIGKILL, current); -} - diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c index 138bcb4..ebb29f5 100644 --- a/arch/um/kernel/syscall.c +++ b/arch/um/kernel/syscall.c @@ -20,7 +20,6 @@ #include "asm/uaccess.h" #include "kern_util.h" #include "sysdep/syscalls.h" -#include "mode_kern.h" /* Unlocked, I don't care if this is a bit off */ int nsyscalls = 0; diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c index 3571703..90e24e2 100644 --- a/arch/um/kernel/time.c +++ b/arch/um/kernel/time.c @@ -18,7 +18,6 @@ #include "asm/param.h" #include "asm/current.h" #include "kern_util.h" -#include "mode.h" #include "os.h" int hz(void) @@ -39,7 +38,7 @@ static unsigned long long prev_nsecs[NR_CPUS]; static long long delta[NR_CPUS]; /* Deviation per interval */ #endif -void timer_irq(union uml_pt_regs *regs) +void timer_irq(struct uml_pt_regs *regs) { unsigned long long ticks = 0; #ifdef CONFIG_UML_REAL_TIME_CLOCK @@ -175,13 +174,13 @@ int do_settimeofday(struct timespec *tv) return 0; } -void timer_handler(int sig, union uml_pt_regs *regs) +void timer_handler(int sig, struct uml_pt_regs *regs) { if(current_thread->cpu == 0) timer_irq(regs); local_irq_disable(); irq_enter(); - update_process_times((regs)->skas.is_user); + update_process_times(regs->is_user); irq_exit(); local_irq_enable(); } diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index 312e8ba..12b8c63 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -8,12 +8,12 @@ #include "asm/pgalloc.h" #include "asm/pgtable.h" #include "asm/tlbflush.h" -#include "mode_kern.h" #include "as-layout.h" #include "tlb.h" #include "mem.h" #include "mem_user.h" #include "os.h" +#include "skas.h" static int add_mmap(unsigned long virt, unsigned long phys, unsigned long len, unsigned int prot, struct host_vm_op *ops, int *index, @@ -341,6 +341,71 @@ int flush_tlb_kernel_range_common(unsigned long start, unsigned long end) return(updated); } +void flush_tlb_page(struct vm_area_struct *vma, unsigned long address) +{ + pgd_t *pgd; + pud_t *pud; + pmd_t *pmd; + pte_t *pte; + struct mm_struct *mm = vma->vm_mm; + void *flush = NULL; + int r, w, x, prot, err = 0; + struct mm_id *mm_id; + + address &= PAGE_MASK; + pgd = pgd_offset(mm, address); + if(!pgd_present(*pgd)) + goto kill; + + pud = pud_offset(pgd, address); + if(!pud_present(*pud)) + goto kill; + + pmd = pmd_offset(pud, address); + if(!pmd_present(*pmd)) + goto kill; + + pte = pte_offset_kernel(pmd, address); + + r = pte_read(*pte); + w = pte_write(*pte); + x = pte_exec(*pte); + if (!pte_young(*pte)) { + r = 0; + w = 0; + } else if (!pte_dirty(*pte)) { + w = 0; + } + + mm_id = &mm->context.skas.id; + prot = ((r ? UM_PROT_READ : 0) | (w ? UM_PROT_WRITE : 0) | + (x ? UM_PROT_EXEC : 0)); + if(pte_newpage(*pte)){ + if(pte_present(*pte)){ + unsigned long long offset; + int fd; + + fd = phys_mapping(pte_val(*pte) & PAGE_MASK, &offset); + err = map(mm_id, address, PAGE_SIZE, prot, fd, offset, + 1, &flush); + } + else err = unmap(mm_id, address, PAGE_SIZE, 1, &flush); + } + else if(pte_newprot(*pte)) + err = protect(mm_id, address, PAGE_SIZE, prot, 1, &flush); + + if(err) + goto kill; + + *pte = pte_mkuptodate(*pte); + + return; + +kill: + printk("Failed to flush page for address 0x%lx\n", address); + force_sig(SIGKILL, current); +} + pgd_t *pgd_offset_proc(struct mm_struct *mm, unsigned long address) { return(pgd_offset(mm, address)); @@ -387,21 +452,80 @@ void flush_tlb_kernel_vm(void) void __flush_tlb_one(unsigned long addr) { - __flush_tlb_one_skas(addr); + flush_tlb_kernel_range_common(addr, addr + PAGE_SIZE); +} + +static int do_ops(union mm_context *mmu, struct host_vm_op *ops, int last, + int finished, void **flush) +{ + struct host_vm_op *op; + int i, ret = 0; + + for(i = 0; i <= last && !ret; i++){ + op = &ops[i]; + switch(op->type){ + case MMAP: + ret = map(&mmu->skas.id, op->u.mmap.addr, + op->u.mmap.len, op->u.mmap.prot, + op->u.mmap.fd, op->u.mmap.offset, finished, + flush); + break; + case MUNMAP: + ret = unmap(&mmu->skas.id, op->u.munmap.addr, + op->u.munmap.len, finished, flush); + break; + case MPROTECT: + ret = protect(&mmu->skas.id, op->u.mprotect.addr, + op->u.mprotect.len, op->u.mprotect.prot, + finished, flush); + break; + default: + printk("Unknown op type %d in do_ops\n", op->type); + break; + } + } + + return ret; +} + +static void fix_range(struct mm_struct *mm, unsigned long start_addr, + unsigned long end_addr, int force) +{ + if(!proc_mm && (end_addr > CONFIG_STUB_START)) + end_addr = CONFIG_STUB_START; + + fix_range_common(mm, start_addr, end_addr, force, do_ops); } void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { - flush_tlb_range_skas(vma, start, end); + if(vma->vm_mm == NULL) + flush_tlb_kernel_range_common(start, end); + else fix_range(vma->vm_mm, start, end, 0); } void flush_tlb_mm(struct mm_struct *mm) { - flush_tlb_mm_skas(mm); + unsigned long end; + + /* Don't bother flushing if this address space is about to be + * destroyed. + */ + if(atomic_read(&mm->mm_users) == 0) + return; + + end = proc_mm ? task_size : CONFIG_STUB_START; + fix_range(mm, 0, end, 0); } void force_flush_all(void) { - force_flush_all_skas(); + struct mm_struct *mm = current->mm; + struct vm_area_struct *vma = mm->mmap; + + while(vma != NULL) { + fix_range(mm, vma->vm_start, vma->vm_end, 1); + vma = vma->vm_next; + } } diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c index 4b472ca..eac63fb 100644 --- a/arch/um/kernel/trap.c +++ b/arch/um/kernel/trap.c @@ -128,7 +128,7 @@ static void bad_segv(struct faultinfo fi, unsigned long ip) force_sig_info(SIGSEGV, &si, current); } -static void segv_handler(int sig, union uml_pt_regs *regs) +static void segv_handler(int sig, struct uml_pt_regs *regs) { struct faultinfo * fi = UPT_FAULTINFO(regs); @@ -146,7 +146,7 @@ static void segv_handler(int sig, union uml_pt_regs *regs) * give us bad data! */ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, - union uml_pt_regs *regs) + struct uml_pt_regs *regs) { struct siginfo si; void *catcher; @@ -214,7 +214,7 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, return 0; } -void relay_signal(int sig, union uml_pt_regs *regs) +void relay_signal(int sig, struct uml_pt_regs *regs) { if (arch_handle_signal(sig, regs)) return; @@ -230,14 +230,14 @@ void relay_signal(int sig, union uml_pt_regs *regs) force_sig(sig, current); } -static void bus_handler(int sig, union uml_pt_regs *regs) +static void bus_handler(int sig, struct uml_pt_regs *regs) { if (current->thread.fault_catcher != NULL) do_longjmp(current->thread.fault_catcher, 1); else relay_signal(sig, regs); } -static void winch(int sig, union uml_pt_regs *regs) +static void winch(int sig, struct uml_pt_regs *regs) { do_IRQ(WINCH_IRQ, regs); } diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 9f3a207..5f3e13c 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -35,8 +35,6 @@ #include "initrd.h" #include "init.h" #include "os.h" -#include "mode_kern.h" -#include "mode.h" #include "skas.h" #define DEFAULT_COMMAND_LINE "root=98:0" @@ -67,7 +65,8 @@ struct cpuinfo_um boot_cpu_data = { unsigned long thread_saved_pc(struct task_struct *task) { - return os_process_pc(thread_pid_skas(task)); + /* FIXME: Need to look up userspace_pid by cpu */ + return os_process_pc(userspace_pid[0]); } /* Changed in setup_arch, which is called in early boot */ @@ -253,6 +252,19 @@ EXPORT_SYMBOL(end_iomem); extern char __binary_start; +static unsigned long set_task_sizes_skas(unsigned long *task_size_out) +{ + /* Round up to the nearest 4M */ + unsigned long host_task_size = ROUND_4M((unsigned long) + &host_task_size); + + if (!skas_needs_stub) + *task_size_out = host_task_size; + else *task_size_out = CONFIG_STUB_START & PGDIR_MASK; + + return host_task_size; +} + int __init linux_main(int argc, char **argv) { unsigned long avail, diff; @@ -289,7 +301,7 @@ int __init linux_main(int argc, char **argv) os_fill_handlinfo(handlinfo_kern); brk_start = (unsigned long) sbrk(0); - before_mem_skas(brk_start); + /* Increase physical memory size for exec-shield users so they actually get what they asked for. This should add zero for non-exec shield users */ @@ -354,7 +366,7 @@ int __init linux_main(int argc, char **argv) stack_protections((unsigned long) &init_thread_info); os_flush_stdout(); - return start_uml_skas(); + return start_uml(); } extern int uml_exitcode; diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c index c8f5b7a..11c2b01 100644 --- a/arch/um/os-Linux/aio.c +++ b/arch/um/os-Linux/aio.c @@ -13,7 +13,6 @@ #include "aio.h" #include "init.h" #include "user.h" -#include "mode.h" #include "kern_constants.h" struct aio_thread_req { diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c index bfabb88..aeeecc6 100644 --- a/arch/um/os-Linux/main.c +++ b/arch/um/os-Linux/main.c @@ -18,7 +18,6 @@ #include "irq_user.h" #include "user.h" #include "init.h" -#include "mode.h" #include "uml-config.h" #include "os.h" #include "um_malloc.h" diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c index d5fef4ce..a955e9b 100644 --- a/arch/um/os-Linux/process.c +++ b/arch/um/os-Linux/process.c @@ -244,9 +244,6 @@ void init_new_thread_signals(void) SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); set_handler(SIGBUS, (__sighandler_t) sig_handler, SA_ONSTACK, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1); - set_handler(SIGUSR2, (__sighandler_t) sig_handler, - SA_ONSTACK, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, - -1); signal(SIGHUP, SIG_IGN); init_irq_signals(1); diff --git a/arch/um/os-Linux/registers.c b/arch/um/os-Linux/registers.c index 9dc3fad..ce0b791 100644 --- a/arch/um/os-Linux/registers.c +++ b/arch/um/os-Linux/registers.c @@ -13,26 +13,26 @@ static unsigned long exec_regs[MAX_REG_NR]; -void init_thread_registers(union uml_pt_regs *to) +void init_thread_registers(struct uml_pt_regs *to) { - memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs)); + memcpy(to->regs, exec_regs, sizeof(to->regs)); } -void save_registers(int pid, union uml_pt_regs *regs) +void save_registers(int pid, struct uml_pt_regs *regs) { int err; - err = ptrace(PTRACE_GETREGS, pid, 0, regs->skas.regs); + err = ptrace(PTRACE_GETREGS, pid, 0, regs->regs); if(err < 0) panic("save_registers - saving registers failed, errno = %d\n", errno); } -void restore_registers(int pid, union uml_pt_regs *regs) +void restore_registers(int pid, struct uml_pt_regs *regs) { int err; - err = ptrace(PTRACE_SETREGS, pid, 0, regs->skas.regs); + err = ptrace(PTRACE_SETREGS, pid, 0, regs->regs); if(err < 0) panic("restore_registers - saving registers failed, " "errno = %d\n", errno); diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index 0d6122a..583424b 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -16,7 +16,6 @@ #include "sysdep/sigcontext.h" #include "sysdep/barrier.h" #include "sigcontext.h" -#include "mode.h" #include "os.h" /* These are the asynchronous signals. SIGVTALRM and SIGARLM are handled @@ -60,14 +59,14 @@ void sig_handler(int sig, struct sigcontext *sc) static void real_alarm_handler(int sig, struct sigcontext *sc) { - union uml_pt_regs regs; + struct uml_pt_regs regs; if(sig == SIGALRM) switch_timers(0); if(sc != NULL) copy_sc(®s, sc); - regs.skas.is_user = 0; + regs.is_user = 0; unblock_signals(); timer_handler(sig, ®s); diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c index 383052b..ae76857 100644 --- a/arch/um/os-Linux/skas/mem.c +++ b/arch/um/os-Linux/skas/mem.c @@ -294,7 +294,3 @@ int protect(struct mm_id * mm_idp, unsigned long addr, unsigned long len, return ret; } - -void before_mem_skas(unsigned long unused) -{ -} diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index db020d2..eb02767 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -131,19 +131,19 @@ void get_skas_faultinfo(int pid, struct faultinfo * fi) } } -static void handle_segv(int pid, union uml_pt_regs * regs) +static void handle_segv(int pid, struct uml_pt_regs * regs) { - get_skas_faultinfo(pid, ®s->skas.faultinfo); - segv(regs->skas.faultinfo, 0, 1, NULL); + get_skas_faultinfo(pid, ®s->faultinfo); + segv(regs->faultinfo, 0, 1, NULL); } /*To use the same value of using_sysemu as the caller, ask it that value (in local_using_sysemu)*/ -static void handle_trap(int pid, union uml_pt_regs *regs, int local_using_sysemu) +static void handle_trap(int pid, struct uml_pt_regs *regs, int local_using_sysemu) { int err, status; /* Mark this as a syscall */ - UPT_SYSCALL_NR(regs) = PT_SYSCALL_NR(regs->skas.regs); + UPT_SYSCALL_NR(regs) = PT_SYSCALL_NR(regs->regs); if (!local_using_sysemu) { @@ -286,7 +286,7 @@ int start_userspace(unsigned long stub_stack) return(pid); } -void userspace(union uml_pt_regs *regs) +void userspace(struct uml_pt_regs *regs) { int err, status, op, pid = userspace_pid[0]; /* To prevent races if using_sysemu changes under us.*/ @@ -312,7 +312,7 @@ void userspace(union uml_pt_regs *regs) panic("userspace - waitpid failed, errno = %d\n", errno); - regs->skas.is_user = 1; + regs->is_user = 1; save_registers(pid, regs); UPT_SYSCALL_NR(regs) = -1; /* Assume: It's not a syscall */ @@ -321,7 +321,7 @@ void userspace(union uml_pt_regs *regs) switch(sig){ case SIGSEGV: if(PTRACE_FULL_FAULTINFO || !ptrace_faultinfo){ - get_skas_faultinfo(pid, ®s->skas.faultinfo); + get_skas_faultinfo(pid, ®s->faultinfo); (*sig_info[SIGSEGV])(SIGSEGV, regs); } else handle_segv(pid, regs); @@ -351,7 +351,7 @@ void userspace(union uml_pt_regs *regs) /* Avoid -ERESTARTSYS handling in host */ if(PT_SYSCALL_NR_OFFSET != PT_SYSCALL_RET_OFFSET) - PT_SYSCALL_NR(regs->skas.regs) = -1; + PT_SYSCALL_NR(regs->regs) = -1; } } } @@ -578,16 +578,16 @@ void reboot_skas(void) UML_LONGJMP(&initial_jmpbuf, INIT_JMP_REBOOT); } -void switch_mm_skas(struct mm_id *mm_idp) +void __switch_mm(struct mm_id *mm_idp) { int err; - /* FIXME: need cpu pid in switch_mm_skas */ + /* FIXME: need cpu pid in __switch_mm */ if(proc_mm){ err = ptrace(PTRACE_SWITCH_MM, userspace_pid[0], 0, mm_idp->u.mm_fd); if(err) - panic("switch_mm_skas - PTRACE_SWITCH_MM failed, " + panic("__switch_mm - PTRACE_SWITCH_MM failed, " "errno = %d\n", errno); } else userspace_pid[0] = mm_idp->u.pid; diff --git a/arch/um/os-Linux/skas/trap.c b/arch/um/os-Linux/skas/trap.c index 3b600c2..d43e470 100644 --- a/arch/um/os-Linux/skas/trap.c +++ b/arch/um/os-Linux/skas/trap.c @@ -15,13 +15,13 @@ #include "sysdep/ptrace_user.h" #include "os.h" -static union uml_pt_regs ksig_regs[UM_NR_CPUS]; +static struct uml_pt_regs ksig_regs[UM_NR_CPUS]; void sig_handler_common_skas(int sig, void *sc_ptr) { struct sigcontext *sc = sc_ptr; - union uml_pt_regs *r; - void (*handler)(int, union uml_pt_regs *); + struct uml_pt_regs *r; + void (*handler)(int, struct uml_pt_regs *); int save_user, save_errno = errno; /* This is done because to allow SIGSEGV to be delivered inside a SEGV @@ -42,12 +42,12 @@ void sig_handler_common_skas(int sig, void *sc_ptr) } else r = TASK_REGS(get_current()); - save_user = r->skas.is_user; - r->skas.is_user = 0; + save_user = r->is_user; + r->is_user = 0; if ( sig == SIGFPE || sig == SIGSEGV || sig == SIGBUS || sig == SIGILL || sig == SIGTRAP ) { - GET_FAULTINFO_FROM_SC(r->skas.faultinfo, sc); + GET_FAULTINFO_FROM_SC(r->faultinfo, sc); } change_sig(SIGUSR1, 1); @@ -62,5 +62,5 @@ void sig_handler_common_skas(int sig, void *sc_ptr) handler(sig, r); errno = save_errno; - r->skas.is_user = save_user; + r->is_user = save_user; } diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c index da5c90d..abfc094 100644 --- a/arch/um/os-Linux/start_up.c +++ b/arch/um/os-Linux/start_up.c @@ -31,7 +31,6 @@ #include "init.h" #include "os.h" #include "uml-config.h" -#include "mode.h" #include "tempfile.h" #include "kern_constants.h" #include "skas.h" diff --git a/arch/um/os-Linux/trap.c b/arch/um/os-Linux/trap.c index b17f546..e87fb536 100644 --- a/arch/um/os-Linux/trap.c +++ b/arch/um/os-Linux/trap.c @@ -7,15 +7,10 @@ #include <signal.h> #include "kern_util.h" #include "os.h" -#include "mode.h" #include "longjmp.h" -void usr2_handler(int sig, union uml_pt_regs *regs) -{ -} - /* Initialized from linux_main() */ -void (*sig_info[NSIG])(int, union uml_pt_regs *); +void (*sig_info[NSIG])(int, struct uml_pt_regs *); void os_fill_handlinfo(struct kern_handlers h) { @@ -28,7 +23,6 @@ void os_fill_handlinfo(struct kern_handlers h) sig_info[SIGIO] = h.sigio_handler; sig_info[SIGVTALRM] = h.timer_handler; sig_info[SIGALRM] = h.timer_handler; - sig_info[SIGUSR2] = usr2_handler; } void do_longjmp(void *b, int val) diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c index b462863..e36541e 100644 --- a/arch/um/os-Linux/umid.c +++ b/arch/um/os-Linux/umid.c @@ -11,7 +11,6 @@ #include "init.h" #include "os.h" #include "user.h" -#include "mode.h" #define UML_DIR "~/.uml/" diff --git a/arch/um/sys-i386/bugs.c b/arch/um/sys-i386/bugs.c index 0393e44..25c1165 100644 --- a/arch/um/sys-i386/bugs.c +++ b/arch/um/sys-i386/bugs.c @@ -162,7 +162,7 @@ void arch_check_bugs(void) host_has_xmm = have_it; } -int arch_handle_signal(int sig, union uml_pt_regs *regs) +int arch_handle_signal(int sig, struct uml_pt_regs *regs) { unsigned char tmp[2]; diff --git a/arch/um/sys-i386/fault.c b/arch/um/sys-i386/fault.c index 745b4fd..cc06a57 100644 --- a/arch/um/sys-i386/fault.c +++ b/arch/um/sys-i386/fault.c @@ -15,7 +15,7 @@ struct exception_table_entry const struct exception_table_entry *search_exception_tables(unsigned long add); /* Compare this to arch/i386/mm/extable.c:fixup_exception() */ -int arch_fixup(unsigned long address, union uml_pt_regs *regs) +int arch_fixup(unsigned long address, struct uml_pt_regs *regs) { const struct exception_table_entry *fixup; diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c index 2683d30..906c2a4 100644 --- a/arch/um/sys-i386/ldt.c +++ b/arch/um/sys-i386/ldt.c @@ -13,7 +13,6 @@ #include "asm/ldt.h" #include "asm/unistd.h" #include "kern.h" -#include "mode_kern.h" #include "os.h" extern int modify_ldt(int func, void *ptr, unsigned long bytecount); @@ -33,7 +32,7 @@ long write_ldt_entry(struct mm_id * mm_idp, int func, struct user_desc * desc, * modify isn't current->active_mm. * If this is called directly by modify_ldt, * (current->active_mm->context.skas.u == mm_idp) - * will be true. So no call to switch_mm_skas(mm_idp) is done. + * will be true. So no call to __switch_mm(mm_idp) is done. * If this is called in case of init_new_ldt or PTRACE_LDT, * mm_idp won't belong to current->active_mm, but child->mm. * So we need to switch child's mm into our userspace, then @@ -43,7 +42,7 @@ long write_ldt_entry(struct mm_id * mm_idp, int func, struct user_desc * desc, */ if(!current->active_mm || current->active_mm == &init_mm || mm_idp != ¤t->active_mm->context.skas.id) - switch_mm_skas(mm_idp); + __switch_mm(mm_idp); } if(ptrace_ldt) { @@ -88,7 +87,7 @@ long write_ldt_entry(struct mm_id * mm_idp, int func, struct user_desc * desc, */ if(current->active_mm && current->active_mm != &init_mm && mm_idp != ¤t->active_mm->context.skas.id) - switch_mm_skas(¤t->active_mm->context.skas.id); + __switch_mm(¤t->active_mm->context.skas.id); } return res; diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c index 7792365..dcf0c6b 100644 --- a/arch/um/sys-i386/ptrace.c +++ b/arch/um/sys-i386/ptrace.c @@ -14,16 +14,18 @@ #include "sysdep/sigcontext.h" #include "sysdep/sc.h" -void arch_switch_to_skas(struct task_struct *from, struct task_struct *to) +extern int arch_switch_tls(struct task_struct *from, struct task_struct *to); + +void arch_switch_to(struct task_struct *from, struct task_struct *to) { - int err = arch_switch_tls_skas(from, to); + int err = arch_switch_tls(from, to); if (!err) return; if (err != -EINVAL) - printk(KERN_WARNING "arch_switch_tls_skas failed, errno %d, not EINVAL\n", -err); + printk(KERN_WARNING "arch_switch_tls failed, errno %d, not EINVAL\n", -err); else - printk(KERN_WARNING "arch_switch_tls_skas failed, errno = EINVAL\n"); + printk(KERN_WARNING "arch_switch_tls failed, errno = EINVAL\n"); } int is_syscall(unsigned long addr) diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c index a9fe8d6..c64d487 100644 --- a/arch/um/sys-i386/signal.c +++ b/arch/um/sys-i386/signal.c @@ -14,30 +14,30 @@ #include "registers.h" #include "skas.h" -void copy_sc(union uml_pt_regs *regs, void *from) +void copy_sc(struct uml_pt_regs *regs, void *from) { struct sigcontext *sc = from; - REGS_GS(regs->skas.regs) = sc->gs; - REGS_FS(regs->skas.regs) = sc->fs; - REGS_ES(regs->skas.regs) = sc->es; - REGS_DS(regs->skas.regs) = sc->ds; - REGS_EDI(regs->skas.regs) = sc->edi; - REGS_ESI(regs->skas.regs) = sc->esi; - REGS_EBP(regs->skas.regs) = sc->ebp; - REGS_SP(regs->skas.regs) = sc->esp; - REGS_EBX(regs->skas.regs) = sc->ebx; - REGS_EDX(regs->skas.regs) = sc->edx; - REGS_ECX(regs->skas.regs) = sc->ecx; - REGS_EAX(regs->skas.regs) = sc->eax; - REGS_IP(regs->skas.regs) = sc->eip; - REGS_CS(regs->skas.regs) = sc->cs; - REGS_EFLAGS(regs->skas.regs) = sc->eflags; - REGS_SS(regs->skas.regs) = sc->ss; + REGS_GS(regs->regs) = sc->gs; + REGS_FS(regs->regs) = sc->fs; + REGS_ES(regs->regs) = sc->es; + REGS_DS(regs->regs) = sc->ds; + REGS_EDI(regs->regs) = sc->edi; + REGS_ESI(regs->regs) = sc->esi; + REGS_EBP(regs->regs) = sc->ebp; + REGS_SP(regs->regs) = sc->esp; + REGS_EBX(regs->regs) = sc->ebx; + REGS_EDX(regs->regs) = sc->edx; + REGS_ECX(regs->regs) = sc->ecx; + REGS_EAX(regs->regs) = sc->eax; + REGS_IP(regs->regs) = sc->eip; + REGS_CS(regs->regs) = sc->cs; + REGS_EFLAGS(regs->regs) = sc->eflags; + REGS_SS(regs->regs) = sc->ss; } -static int copy_sc_from_user_skas(struct pt_regs *regs, - struct sigcontext __user *from) +static int copy_sc_from_user(struct pt_regs *regs, + struct sigcontext __user *from) { struct sigcontext sc; unsigned long fpregs[HOST_FP_SIZE]; @@ -60,31 +60,32 @@ static int copy_sc_from_user_skas(struct pt_regs *regs, return 0; } -int copy_sc_to_user_skas(struct sigcontext __user *to, struct _fpstate __user *to_fp, - struct pt_regs *regs, unsigned long sp) +static int copy_sc_to_user(struct sigcontext __user *to, + struct _fpstate __user *to_fp, struct pt_regs *regs, + unsigned long sp) { 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); - sc.fs = REGS_FS(regs->regs.skas.regs); - sc.es = REGS_ES(regs->regs.skas.regs); - sc.ds = REGS_DS(regs->regs.skas.regs); - sc.edi = REGS_EDI(regs->regs.skas.regs); - sc.esi = REGS_ESI(regs->regs.skas.regs); - sc.ebp = REGS_EBP(regs->regs.skas.regs); + sc.gs = REGS_GS(regs->regs.regs); + sc.fs = REGS_FS(regs->regs.regs); + sc.es = REGS_ES(regs->regs.regs); + sc.ds = REGS_DS(regs->regs.regs); + sc.edi = REGS_EDI(regs->regs.regs); + sc.esi = REGS_ESI(regs->regs.regs); + sc.ebp = REGS_EBP(regs->regs.regs); sc.esp = sp; - sc.ebx = REGS_EBX(regs->regs.skas.regs); - sc.edx = REGS_EDX(regs->regs.skas.regs); - sc.ecx = REGS_ECX(regs->regs.skas.regs); - sc.eax = REGS_EAX(regs->regs.skas.regs); - sc.eip = REGS_IP(regs->regs.skas.regs); - sc.cs = REGS_CS(regs->regs.skas.regs); - 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.ebx = REGS_EBX(regs->regs.regs); + sc.edx = REGS_EDX(regs->regs.regs); + sc.ecx = REGS_ECX(regs->regs.regs); + sc.eax = REGS_EAX(regs->regs.regs); + sc.eip = REGS_IP(regs->regs.regs); + sc.cs = REGS_CS(regs->regs.regs); + sc.eflags = REGS_EFLAGS(regs->regs.regs); + sc.esp_at_signal = regs->regs.regs[UESP]; + sc.ss = regs->regs.regs[SS]; sc.cr2 = fi->cr2; sc.err = fi->error_code; sc.trapno = fi->trap_no; @@ -105,17 +106,6 @@ int copy_sc_to_user_skas(struct sigcontext __user *to, struct _fpstate __user *t copy_to_user(to_fp, fpregs, sizeof(fpregs)); } -static int copy_sc_from_user(struct pt_regs *to, void __user *from) -{ - return copy_sc_from_user_skas(to, from); -} - -static int copy_sc_to_user(struct sigcontext __user *to, struct _fpstate __user *fp, - struct pt_regs *from, unsigned long sp) -{ - return copy_sc_to_user_skas(to, fp, from, sp); -} - static int copy_ucontext_to_user(struct ucontext __user *uc, struct _fpstate __user *fp, sigset_t *set, unsigned long sp) { diff --git a/arch/um/sys-i386/tls.c b/arch/um/sys-i386/tls.c index bb4d0e2..6cb7cbd 100644 --- a/arch/um/sys-i386/tls.c +++ b/arch/um/sys-i386/tls.c @@ -14,9 +14,7 @@ #include "asm/desc.h" #include "kern.h" #include "kern_util.h" -#include "mode_kern.h" #include "os.h" -#include "mode.h" #include "skas.h" /* @@ -167,7 +165,7 @@ void clear_flushed_tls(struct task_struct *task) * And this will not need be used when (and if) we'll add support to the host * SKAS patch. */ -int arch_switch_tls_skas(struct task_struct *from, struct task_struct *to) +int arch_switch_tls(struct task_struct *from, struct task_struct *to) { if (!host_supports_tls) return 0; diff --git a/arch/um/sys-x86_64/bugs.c b/arch/um/sys-x86_64/bugs.c index 0954788..506b676 100644 --- a/arch/um/sys-x86_64/bugs.c +++ b/arch/um/sys-x86_64/bugs.c @@ -14,7 +14,7 @@ void arch_check_bugs(void) { } -int arch_handle_signal(int sig, union uml_pt_regs *regs) +int arch_handle_signal(int sig, struct uml_pt_regs *regs) { return 0; } diff --git a/arch/um/sys-x86_64/fault.c b/arch/um/sys-x86_64/fault.c index 4636b14..79f37ef 100644 --- a/arch/um/sys-x86_64/fault.c +++ b/arch/um/sys-x86_64/fault.c @@ -14,7 +14,7 @@ struct exception_table_entry }; const struct exception_table_entry *search_exception_tables(unsigned long add); -int arch_fixup(unsigned long address, union uml_pt_regs *regs) +int arch_fixup(unsigned long address, struct uml_pt_regs *regs) { const struct exception_table_entry *fixup; diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c index 2d6cdd2..a06d66d 100644 --- a/arch/um/sys-x86_64/signal.c +++ b/arch/um/sys-x86_64/signal.c @@ -16,12 +16,12 @@ #include "frame_kern.h" #include "skas.h" -void copy_sc(union uml_pt_regs *regs, void *from) +void copy_sc(struct uml_pt_regs *regs, void *from) { struct sigcontext *sc = from; #define GETREG(regs, regno, sc, regname) \ - (regs)->skas.regs[(regno) / sizeof(unsigned long)] = (sc)->regname + (regs)->regs[(regno) / sizeof(unsigned long)] = (sc)->regname GETREG(regs, R8, sc, r8); GETREG(regs, R9, sc, r9); @@ -46,13 +46,13 @@ void copy_sc(union uml_pt_regs *regs, void *from) #undef GETREG } -static int copy_sc_from_user_skas(struct pt_regs *regs, - struct sigcontext __user *from) +static int copy_sc_from_user(struct pt_regs *regs, + struct sigcontext __user *from) { int err = 0; #define GETREG(regs, regno, sc, regname) \ - __get_user((regs)->regs.skas.regs[(regno) / sizeof(unsigned long)], \ + __get_user((regs)->regs.regs[(regno) / sizeof(unsigned long)], \ &(sc)->regname) err |= GETREG(regs, R8, from, r8); @@ -80,10 +80,9 @@ static int copy_sc_from_user_skas(struct pt_regs *regs, return err; } -int copy_sc_to_user_skas(struct sigcontext __user *to, - struct _fpstate __user *to_fp, - struct pt_regs *regs, unsigned long mask, - unsigned long sp) +static int copy_sc_to_user(struct sigcontext __user *to, + struct _fpstate __user *to_fp, struct pt_regs *regs, + unsigned long mask, unsigned long sp) { struct faultinfo * fi = ¤t->thread.arch.faultinfo; int err = 0; @@ -92,7 +91,7 @@ int copy_sc_to_user_skas(struct sigcontext __user *to, err |= __put_user(0, &to->fs); #define PUTREG(regs, regno, sc, regname) \ - __put_user((regs)->regs.skas.regs[(regno) / sizeof(unsigned long)], \ + __put_user((regs)->regs.regs[(regno) / sizeof(unsigned long)], \ &(sc)->regname) err |= PUTREG(regs, RDI, to, rdi); @@ -130,22 +129,6 @@ int copy_sc_to_user_skas(struct sigcontext __user *to, return(err); } -static int copy_sc_from_user(struct pt_regs *to, void __user *from) -{ - int ret; - - ret = copy_sc_from_user_skas(to, from); - return(ret); -} - -static int copy_sc_to_user(struct sigcontext __user *to, - struct _fpstate __user *fp, - struct pt_regs *from, unsigned long mask, - unsigned long sp) -{ - return copy_sc_to_user_skas(to, fp, from, mask, sp); -} - struct rt_sigframe { char __user *pretcode; diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c index d44398c..bbcab77 100644 --- a/arch/um/sys-x86_64/syscalls.c +++ b/arch/um/sys-x86_64/syscalls.c @@ -28,8 +28,7 @@ asmlinkage long sys_uname64(struct new_utsname __user * name) return err ? -EFAULT : 0; } -long arch_prctl_skas(struct task_struct *task, int code, - unsigned long __user *addr) +long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr) { unsigned long *ptr = addr, tmp; long ret; @@ -91,7 +90,7 @@ long arch_prctl_skas(struct task_struct *task, int code, long sys_arch_prctl(int code, unsigned long addr) { - return arch_prctl_skas(current, code, (unsigned long __user *) addr); + return arch_prctl(current, code, (unsigned long __user *) addr); } long sys_clone(unsigned long clone_flags, unsigned long newsp, @@ -108,10 +107,10 @@ long sys_clone(unsigned long clone_flags, unsigned long newsp, return ret; } -void arch_switch_to_skas(struct task_struct *from, struct task_struct *to) +void arch_switch_to(struct task_struct *from, struct task_struct *to) { if((to->thread.arch.fs == 0) || (to->mm == NULL)) return; - arch_prctl_skas(to, ARCH_SET_FS, (void __user *) to->thread.arch.fs); + arch_prctl(to, ARCH_SET_FS, (void __user *) to->thread.arch.fs); } diff --git a/arch/um/sys-x86_64/tls.c b/arch/um/sys-x86_64/tls.c index febbc94..fcd5217 100644 --- a/arch/um/sys-x86_64/tls.c +++ b/arch/um/sys-x86_64/tls.c @@ -11,7 +11,7 @@ int arch_copy_tls(struct task_struct *t) * (which is argument 5, child_tid, of clone) so it can be set * during context switches. */ - t->thread.arch.fs = t->thread.regs.regs.skas.regs[R8 / sizeof(long)]; + t->thread.arch.fs = t->thread.regs.regs.regs[R8 / sizeof(long)]; return 0; } diff --git a/include/asm-um/mmu_context.h b/include/asm-um/mmu_context.h index a4186af..0c4a375 100644 --- a/include/asm-um/mmu_context.h +++ b/include/asm-um/mmu_context.h @@ -29,7 +29,7 @@ static inline void activate_mm(struct mm_struct *old, struct mm_struct *new) * possible. */ if (old != new && (current->flags & PF_BORROWED_MM)) - switch_mm_skas(&new->context.skas.id); + __switch_mm(&new->context.skas.id); } static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, @@ -41,7 +41,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, cpu_clear(cpu, prev->cpu_vm_mask); cpu_set(cpu, next->cpu_vm_mask); if(next != &init_mm) - switch_mm_skas(&next->context.skas.id); + __switch_mm(&next->context.skas.id); } } @@ -50,21 +50,9 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, { } -extern int init_new_context_skas(struct task_struct *task, - struct mm_struct *mm); +extern int init_new_context(struct task_struct *task, struct mm_struct *mm); -static inline int init_new_context(struct task_struct *task, - struct mm_struct *mm) -{ - return(init_new_context_skas(task, mm)); -} - -extern void destroy_context_skas(struct mm_struct *mm); - -static inline void destroy_context(struct mm_struct *mm) -{ - destroy_context_skas(mm); -} +extern void destroy_context(struct mm_struct *mm); #endif diff --git a/include/asm-um/processor-generic.h b/include/asm-um/processor-generic.h index be3ffec..126df73 100644 --- a/include/asm-um/processor-generic.h +++ b/include/asm-um/processor-generic.h @@ -32,12 +32,8 @@ struct thread_struct { unsigned long temp_stack; void *exec_buf; struct arch_thread arch; - union { - struct { - jmp_buf switch_buf; - int mm_count; - } skas; - } mode; + jmp_buf switch_buf; + int mm_count; struct { int op; union { @@ -75,7 +71,10 @@ typedef struct { extern struct task_struct *alloc_task_struct(void); -extern void release_thread(struct task_struct *); +static inline void release_thread(struct task_struct *task) +{ +} + extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); static inline void prepare_to_copy(struct task_struct *tsk) @@ -125,8 +124,7 @@ extern struct cpuinfo_um cpu_data[]; #endif -#define KSTK_REG(tsk, reg) \ - get_thread_reg(reg, &tsk->thread.mode.skas.switch_buf) +#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf) #define get_wchan(p) (0) #endif diff --git a/include/asm-um/ptrace-generic.h b/include/asm-um/ptrace-generic.h index 99c87c5..c8b3e6b 100644 --- a/include/asm-um/ptrace-generic.h +++ b/include/asm-um/ptrace-generic.h @@ -12,7 +12,7 @@ #include "sysdep/ptrace.h" struct pt_regs { - union uml_pt_regs regs; + struct uml_pt_regs regs; }; #define EMPTY_REGS { .regs = EMPTY_UML_PT_REGS } @@ -44,7 +44,7 @@ extern int set_fpxregs(unsigned long buf, struct task_struct *tsk); extern void show_regs(struct pt_regs *regs); -extern void send_sigtrap(struct task_struct *tsk, union uml_pt_regs *regs, +extern void send_sigtrap(struct task_struct *tsk, struct uml_pt_regs *regs, int error_code); extern int arch_copy_tls(struct task_struct *new); diff --git a/include/asm-um/ptrace-i386.h b/include/asm-um/ptrace-i386.h index 4928a31..b733fa3 100644 --- a/include/asm-um/ptrace-i386.h +++ b/include/asm-um/ptrace-i386.h @@ -46,21 +46,4 @@ extern int ptrace_get_thread_area(struct task_struct *child, int idx, extern int ptrace_set_thread_area(struct task_struct *child, int idx, struct user_desc __user *user_desc); -extern int do_set_thread_area_skas(struct user_desc *info); -extern int do_get_thread_area_skas(struct user_desc *info); - -extern int do_set_thread_area_tt(struct user_desc *info); -extern int do_get_thread_area_tt(struct user_desc *info); - -extern int arch_switch_tls_skas(struct task_struct *from, struct task_struct *to); -extern int arch_switch_tls_tt(struct task_struct *from, struct task_struct *to); - -extern void arch_switch_to_tt(struct task_struct *from, struct task_struct *to); -extern void arch_switch_to_skas(struct task_struct *from, struct task_struct *to); - -extern int do_get_thread_area_skas(struct user_desc *info); -extern int do_set_thread_area_skas(struct user_desc *info); - -struct task_struct; - #endif diff --git a/include/asm-um/ptrace-x86_64.h b/include/asm-um/ptrace-x86_64.h index bf61d17..4c47535 100644 --- a/include/asm-um/ptrace-x86_64.h +++ b/include/asm-um/ptrace-x86_64.h @@ -76,15 +76,6 @@ static inline int ptrace_set_thread_area(struct task_struct *child, int idx, return -ENOSYS; } -static inline void arch_switch_to_tt(struct task_struct *from, - struct task_struct *to) -{ -} - -extern void arch_switch_to_skas(struct task_struct *from, - struct task_struct *to); - -extern long arch_prctl_skas(struct task_struct *task, int code, - unsigned long __user *addr); - +extern long arch_prctl(struct task_struct *task, int code, + unsigned long __user *addr); #endif diff --git a/include/asm-um/tlbflush.h b/include/asm-um/tlbflush.h index 1520b08..9d647c5 100644 --- a/include/asm-um/tlbflush.h +++ b/include/asm-um/tlbflush.h @@ -24,18 +24,7 @@ extern void flush_tlb_all(void); extern void flush_tlb_mm(struct mm_struct *mm); extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); -extern void flush_tlb_page_skas(struct vm_area_struct *vma, - unsigned long address); - -static inline void flush_tlb_page(struct vm_area_struct *vma, - unsigned long address) -{ - address &= PAGE_MASK; - - flush_tlb_page_skas(vma, address); -} - -extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); +extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long address); extern void flush_tlb_kernel_vm(void); extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); extern void __flush_tlb_one(unsigned long addr); |
