diff options
Diffstat (limited to 'arch/um/os-Linux')
| -rw-r--r-- | arch/um/os-Linux/Makefile | 8 | ||||
| -rw-r--r-- | arch/um/os-Linux/registers.c | 54 | ||||
| -rw-r--r-- | arch/um/os-Linux/skas/mem.c | 2 | ||||
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 8 | ||||
| -rw-r--r-- | arch/um/os-Linux/sys-i386/registers.c | 108 | ||||
| -rw-r--r-- | arch/um/os-Linux/sys-x86_64/Makefile | 2 | ||||
| -rw-r--r-- | arch/um/os-Linux/sys-x86_64/registers.c | 75 |
7 files changed, 65 insertions, 192 deletions
diff --git a/arch/um/os-Linux/Makefile b/arch/um/os-Linux/Makefile index 2f8c79464015..f1bb58fe3207 100644 --- a/arch/um/os-Linux/Makefile +++ b/arch/um/os-Linux/Makefile @@ -4,8 +4,8 @@ # obj-y = aio.o elf_aux.o execvp.o file.o helper.o irq.o main.o mem.o process.o \ - sigio.o signal.o start_up.o time.o trap.o tty.o uaccess.o umid.o tls.o \ - user_syms.o util.o drivers/ sys-$(SUBARCH)/ + registers.o sigio.o signal.o start_up.o time.o trap.o tty.o uaccess.o \ + umid.o tls.o user_syms.o util.o drivers/ sys-$(SUBARCH)/ obj-$(CONFIG_MODE_SKAS) += skas/ @@ -16,8 +16,8 @@ obj-$(CONFIG_TTY_LOG) += tty_log.o user-objs-$(CONFIG_TTY_LOG) += tty_log.o USER_OBJS := $(user-objs-y) aio.o elf_aux.o execvp.o file.o helper.o irq.o \ - main.o mem.o process.o sigio.o signal.o start_up.o time.o trap.o tty.o \ - tls.o uaccess.o umid.o util.o + main.o mem.o process.o registers.o sigio.o signal.o start_up.o time.o \ + trap.o tty.o tls.o uaccess.o umid.o util.o CFLAGS_user_syms.o += -DSUBARCH_$(SUBARCH) diff --git a/arch/um/os-Linux/registers.c b/arch/um/os-Linux/registers.c new file mode 100644 index 000000000000..9dc3fad9ea29 --- /dev/null +++ b/arch/um/os-Linux/registers.c @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2004 PathScale, Inc + * Licensed under the GPL + */ + +#include <errno.h> +#include <string.h> +#include <sys/ptrace.h> +#include "user.h" +#include "sysdep/ptrace.h" + +/* This is set once at boot time and not changed thereafter */ + +static unsigned long exec_regs[MAX_REG_NR]; + +void init_thread_registers(union uml_pt_regs *to) +{ + memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs)); +} + +void save_registers(int pid, union uml_pt_regs *regs) +{ + int err; + + err = ptrace(PTRACE_GETREGS, pid, 0, regs->skas.regs); + if(err < 0) + panic("save_registers - saving registers failed, errno = %d\n", + errno); +} + +void restore_registers(int pid, union uml_pt_regs *regs) +{ + int err; + + err = ptrace(PTRACE_SETREGS, pid, 0, regs->skas.regs); + if(err < 0) + panic("restore_registers - saving registers failed, " + "errno = %d\n", errno); +} + +void init_registers(int pid) +{ + int err; + + err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs); + if(err) + panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", + errno); +} + +void get_safe_registers(unsigned long *regs) +{ + memcpy(regs, exec_regs, sizeof(exec_regs)); +} diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c index 9fbf210ebfb0..383052baa166 100644 --- a/arch/um/os-Linux/skas/mem.c +++ b/arch/um/os-Linux/skas/mem.c @@ -44,7 +44,7 @@ static unsigned long syscall_regs[MAX_REG_NR]; static int __init init_syscall_regs(void) { - get_safe_registers(syscall_regs, NULL); + get_safe_registers(syscall_regs); syscall_regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE + ((unsigned long) &batch_syscall_stub - (unsigned long) &__syscall_stub_start); diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index ba9af8d62055..db020d21f132 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -357,11 +357,10 @@ void userspace(union uml_pt_regs *regs) } static unsigned long thread_regs[MAX_REG_NR]; -static unsigned long thread_fp_regs[HOST_FP_SIZE]; static int __init init_thread_regs(void) { - get_safe_registers(thread_regs, thread_fp_regs); + get_safe_registers(thread_regs); /* Set parent's instruction pointer to start of clone-stub */ thread_regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE + (unsigned long) stub_clone_handler - @@ -398,11 +397,6 @@ int copy_context_skas0(unsigned long new_stack, int pid) panic("copy_context_skas0 : PTRACE_SETREGS failed, " "pid = %d, errno = %d\n", pid, -err); - err = ptrace_setfpregs(pid, thread_fp_regs); - if(err < 0) - panic("copy_context_skas0 : PTRACE_SETFPREGS failed, " - "pid = %d, errno = %d\n", pid, -err); - /* set a well known return code for detection of child write failure */ child_data->err = 12345678; diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c index 84b44f9cd42a..f171204caa4e 100644 --- a/arch/um/os-Linux/sys-i386/registers.c +++ b/arch/um/os-Linux/sys-i386/registers.c @@ -4,30 +4,10 @@ */ #include <errno.h> -#include <string.h> -#include "sysdep/ptrace_user.h" -#include "sysdep/ptrace.h" -#include "uml-config.h" -#include "skas_ptregs.h" -#include "registers.h" +#include <sysdep/ptrace_user.h> #include "longjmp.h" #include "user.h" -/* These are set once at boot time and not changed thereafter */ - -static unsigned long exec_regs[MAX_REG_NR]; -static unsigned long exec_fp_regs[HOST_FP_SIZE]; -static unsigned long exec_fpx_regs[HOST_XFP_SIZE]; -static int have_fpx_regs = 1; - -void init_thread_registers(union uml_pt_regs *to) -{ - memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs)); - memcpy(to->skas.fp, exec_fp_regs, sizeof(to->skas.fp)); - if(have_fpx_regs) - memcpy(to->skas.xfp, exec_fpx_regs, sizeof(to->skas.xfp)); -} - /* XXX These need to use [GS]ETFPXREGS and copy_sc_{to,from}_user_skas needs * to pass in a sufficiently large buffer */ @@ -45,92 +25,6 @@ int restore_fp_registers(int pid, unsigned long *fp_regs) return 0; } -static int move_registers(int pid, int int_op, union uml_pt_regs *regs, - int fp_op, unsigned long *fp_regs) -{ - if(ptrace(int_op, pid, 0, regs->skas.regs) < 0) - return -errno; - - if(ptrace(fp_op, pid, 0, fp_regs) < 0) - return -errno; - - return 0; -} - -void save_registers(int pid, union uml_pt_regs *regs) -{ - unsigned long *fp_regs; - int err, fp_op; - - if(have_fpx_regs){ - fp_op = PTRACE_GETFPXREGS; - fp_regs = regs->skas.xfp; - } - else { - fp_op = PTRACE_GETFPREGS; - fp_regs = regs->skas.fp; - } - - err = move_registers(pid, PTRACE_GETREGS, regs, fp_op, fp_regs); - if(err) - panic("save_registers - saving registers failed, errno = %d\n", - -err); -} - -void restore_registers(int pid, union uml_pt_regs *regs) -{ - unsigned long *fp_regs; - int err, fp_op; - - if(have_fpx_regs){ - fp_op = PTRACE_SETFPXREGS; - fp_regs = regs->skas.xfp; - } - else { - fp_op = PTRACE_SETFPREGS; - fp_regs = regs->skas.fp; - } - - err = move_registers(pid, PTRACE_SETREGS, regs, fp_op, fp_regs); - if(err) - panic("restore_registers - saving registers failed, " - "errno = %d\n", -err); -} - -void init_registers(int pid) -{ - int err; - - memset(exec_regs, 0, sizeof(exec_regs)); - err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs); - if(err) - panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", - errno); - - 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; - - err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs); - if(err) - panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d", - errno); -} - -void get_safe_registers(unsigned long *regs, unsigned long *fp_regs) -{ - memcpy(regs, exec_regs, sizeof(exec_regs)); - if(fp_regs != NULL) - memcpy(fp_regs, exec_fp_regs, - HOST_FP_SIZE * sizeof(unsigned long)); -} - unsigned long get_thread_reg(int reg, jmp_buf *buf) { switch(reg){ diff --git a/arch/um/os-Linux/sys-x86_64/Makefile b/arch/um/os-Linux/sys-x86_64/Makefile index 7955e061a678..eac8c0db3001 100644 --- a/arch/um/os-Linux/sys-x86_64/Makefile +++ b/arch/um/os-Linux/sys-x86_64/Makefile @@ -1,5 +1,5 @@ # -# Copyright (C) 2000 Jeff Dike (jdike@karaya.com) +# Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) # Licensed under the GPL # diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c index 9467315b8059..9bfa789992de 100644 --- a/arch/um/os-Linux/sys-x86_64/registers.c +++ b/arch/um/os-Linux/sys-x86_64/registers.c @@ -1,23 +1,15 @@ /* - * Copyright (C) 2004 PathScale, Inc + * Copyright (C) 2006-2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ #include <errno.h> #include <sys/ptrace.h> -#include <string.h> -#include "ptrace_user.h" -#include "uml-config.h" -#include "skas_ptregs.h" -#include "registers.h" +#define __FRAME_OFFSETS +#include <asm/ptrace.h> #include "longjmp.h" #include "user.h" -/* These are set once at boot time and not changed thereafter */ - -static unsigned long exec_regs[MAX_REG_NR]; -static unsigned long exec_fp_regs[HOST_FP_SIZE]; - int save_fp_registers(int pid, unsigned long *fp_regs) { if(ptrace(PTRACE_GETFPREGS, pid, 0, fp_regs) < 0) @@ -32,67 +24,6 @@ int restore_fp_registers(int pid, unsigned long *fp_regs) return 0; } -void init_thread_registers(union uml_pt_regs *to) -{ - memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs)); - memcpy(to->skas.fp, exec_fp_regs, sizeof(to->skas.fp)); -} - -static int move_registers(int pid, int int_op, int fp_op, - union uml_pt_regs *regs) -{ - if(ptrace(int_op, pid, 0, regs->skas.regs) < 0) - return -errno; - - if(ptrace(fp_op, pid, 0, regs->skas.fp) < 0) - return -errno; - - return 0; -} - -void save_registers(int pid, union uml_pt_regs *regs) -{ - int err; - - err = move_registers(pid, PTRACE_GETREGS, PTRACE_GETFPREGS, regs); - if(err) - panic("save_registers - saving registers failed, errno = %d\n", - -err); -} - -void restore_registers(int pid, union uml_pt_regs *regs) -{ - int err; - - err = move_registers(pid, PTRACE_SETREGS, PTRACE_SETFPREGS, regs); - if(err) - panic("restore_registers - saving registers failed, " - "errno = %d\n", -err); -} - -void init_registers(int pid) -{ - int err; - - err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs); - if(err) - panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", - errno); - - err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs); - if(err) - panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d", - errno); -} - -void get_safe_registers(unsigned long *regs, unsigned long *fp_regs) -{ - memcpy(regs, exec_regs, sizeof(exec_regs)); - if(fp_regs != NULL) - memcpy(fp_regs, exec_fp_regs, - HOST_FP_SIZE * sizeof(unsigned long)); -} - unsigned long get_thread_reg(int reg, jmp_buf *buf) { switch(reg){ |
