f355559cf7
x86_64 needs some TLS fixes. What was missing was remembering the child thread id during clone and stuffing it into the child during each context switch. The %fs value is stored separately in the thread structure since the host controls what effect it has on the actual register file. The host also needs to store it in its own thread struct, so we need the value kept outside the register file. arch_prctl_skas was fixed to call PTRACE_ARCH_PRCTL appropriately. There is some saving and restoring of registers in the ARCH_SET_* cases so that the correct set of registers are changed on the host and restored to the process when it runs again. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
|
|
* Copyright 2003 PathScale, Inc.
|
|
*
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#ifndef __UM_PTRACE_X86_64_H
|
|
#define __UM_PTRACE_X86_64_H
|
|
|
|
#include "linux/compiler.h"
|
|
#include "asm/errno.h"
|
|
#include "asm/host_ldt.h"
|
|
|
|
#define __FRAME_OFFSETS /* Needed to get the R* macros */
|
|
#include "asm/ptrace-generic.h"
|
|
|
|
#define HOST_AUDIT_ARCH AUDIT_ARCH_X86_64
|
|
|
|
/* Also defined in sysdep/ptrace.h, so may already be defined. */
|
|
#ifndef FS_BASE
|
|
#define FS_BASE (21 * sizeof(unsigned long))
|
|
#define GS_BASE (22 * sizeof(unsigned long))
|
|
#define DS (23 * sizeof(unsigned long))
|
|
#define ES (24 * sizeof(unsigned long))
|
|
#define FS (25 * sizeof(unsigned long))
|
|
#define GS (26 * sizeof(unsigned long))
|
|
#endif
|
|
|
|
#define PT_REGS_RBX(r) UPT_RBX(&(r)->regs)
|
|
#define PT_REGS_RCX(r) UPT_RCX(&(r)->regs)
|
|
#define PT_REGS_RDX(r) UPT_RDX(&(r)->regs)
|
|
#define PT_REGS_RSI(r) UPT_RSI(&(r)->regs)
|
|
#define PT_REGS_RDI(r) UPT_RDI(&(r)->regs)
|
|
#define PT_REGS_RBP(r) UPT_RBP(&(r)->regs)
|
|
#define PT_REGS_RAX(r) UPT_RAX(&(r)->regs)
|
|
#define PT_REGS_R8(r) UPT_R8(&(r)->regs)
|
|
#define PT_REGS_R9(r) UPT_R9(&(r)->regs)
|
|
#define PT_REGS_R10(r) UPT_R10(&(r)->regs)
|
|
#define PT_REGS_R11(r) UPT_R11(&(r)->regs)
|
|
#define PT_REGS_R12(r) UPT_R12(&(r)->regs)
|
|
#define PT_REGS_R13(r) UPT_R13(&(r)->regs)
|
|
#define PT_REGS_R14(r) UPT_R14(&(r)->regs)
|
|
#define PT_REGS_R15(r) UPT_R15(&(r)->regs)
|
|
|
|
#define PT_REGS_FS(r) UPT_FS(&(r)->regs)
|
|
#define PT_REGS_GS(r) UPT_GS(&(r)->regs)
|
|
#define PT_REGS_DS(r) UPT_DS(&(r)->regs)
|
|
#define PT_REGS_ES(r) UPT_ES(&(r)->regs)
|
|
#define PT_REGS_SS(r) UPT_SS(&(r)->regs)
|
|
#define PT_REGS_CS(r) UPT_CS(&(r)->regs)
|
|
|
|
#define PT_REGS_ORIG_RAX(r) UPT_ORIG_RAX(&(r)->regs)
|
|
#define PT_REGS_RIP(r) UPT_IP(&(r)->regs)
|
|
#define PT_REGS_RSP(r) UPT_SP(&(r)->regs)
|
|
|
|
#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
|
|
|
|
/* XXX */
|
|
#define user_mode(r) UPT_IS_USER(&(r)->regs)
|
|
#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_RAX(r)
|
|
#define PT_REGS_SYSCALL_RET(r) PT_REGS_RAX(r)
|
|
|
|
#define PT_FIX_EXEC_STACK(sp) do ; while(0)
|
|
|
|
#define profile_pc(regs) PT_REGS_IP(regs)
|
|
|
|
static inline int ptrace_get_thread_area(struct task_struct *child, int idx,
|
|
struct user_desc __user *user_desc)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int ptrace_set_thread_area(struct task_struct *child, int idx,
|
|
struct user_desc __user *user_desc)
|
|
{
|
|
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);
|
|
|
|
#endif
|