linux/arch/um/sys-x86_64/ptrace_user.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

52 lines
1.0 KiB
C

/*
* Copyright 2003 PathScale, Inc.
*
* Licensed under the GPL
*/
#include <stddef.h>
#include <errno.h>
#include "ptrace_user.h"
#include "user.h"
#include "kern_constants.h"
int ptrace_getregs(long pid, unsigned long *regs_out)
{
if(ptrace(PTRACE_GETREGS, pid, 0, regs_out) < 0)
return(-errno);
return(0);
}
int ptrace_setregs(long pid, unsigned long *regs)
{
if(ptrace(PTRACE_SETREGS, pid, 0, regs) < 0)
return(-errno);
return(0);
}
void ptrace_pokeuser(unsigned long addr, unsigned long data)
{
panic("ptrace_pokeuser");
}
#define DS 184
#define ES 192
#define __USER_DS 0x2b
void arch_enter_kernel(void *task, int pid)
{
}
void arch_leave_kernel(void *task, int pid)
{
#ifdef UM_USER_CS
if(ptrace(PTRACE_POKEUSR, pid, CS, UM_USER_CS) < 0)
printk("POKEUSR CS failed");
#endif
if(ptrace(PTRACE_POKEUSR, pid, DS, __USER_DS) < 0)
printk("POKEUSR DS failed");
if(ptrace(PTRACE_POKEUSR, pid, ES, __USER_DS) < 0)
printk("POKEUSR ES failed");
}