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Added context functions for FreeBSD.

This commit is contained in:
Juergen Lock 2000-02-07 16:03:08 +00:00 committed by Alexandre Julliard
parent 16cbf15686
commit 578276568f
1 changed files with 119 additions and 4 deletions
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123
server/context_i386.c
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@ -13,9 +13,10 @@
#ifdef HAVE_SYS_REG_H
#include <sys/reg.h>
#endif
#include <sys/ptrace.h>
#include <sys/user.h>
#include <unistd.h>
#include <sys/ptrace.h>
#include <sys/param.h>
#include <sys/user.h>
#include "winbase.h"
@ -35,6 +36,12 @@
#ifndef PTRACE_GETFPREGS
#define PTRACE_GETFPREGS PT_GETFPREGS
#endif
#ifndef PTRACE_SETREGS
#define PTRACE_SETREGS PT_SETREGS
#endif
#ifndef PTRACE_SETFPREGS
#define PTRACE_SETFPREGS PT_SETFPREGS
#endif
#ifdef linux
@ -288,9 +295,117 @@ static void set_thread_context( struct thread *thread, unsigned int flags, CONTE
file_set_error();
}
#else /* linux || __sun__ */
#elif defined(__FreeBSD__)
#include <machine/reg.h>
/* retrieve a thread context */
static void get_thread_context( struct thread *thread, unsigned int flags, CONTEXT *context )
{
int pid = thread->unix_pid;
if (flags & CONTEXT_FULL)
{
struct reg regs;
if (ptrace( PTRACE_GETREGS, pid, 0, (int) &regs ) == -1) goto error;
if (flags & CONTEXT_INTEGER)
{
context->Eax = regs.r_eax;
context->Ebx = regs.r_ebx;
context->Ecx = regs.r_ecx;
context->Edx = regs.r_edx;
context->Esi = regs.r_esi;
context->Edi = regs.r_edi;
}
if (flags & CONTEXT_CONTROL)
{
context->Ebp = regs.r_ebp;
context->Esp = regs.r_esp;
context->Eip = regs.r_eip;
context->SegCs = regs.r_cs & 0xffff;
context->SegSs = regs.r_ss & 0xffff;
context->EFlags = regs.r_eflags;
}
if (flags & CONTEXT_SEGMENTS)
{
context->SegDs = regs.r_ds & 0xffff;
context->SegEs = regs.r_es & 0xffff;
context->SegFs = regs.r_fs & 0xffff;
context->SegGs = regs.r_gs & 0xffff;
}
}
if (flags & CONTEXT_DEBUG_REGISTERS)
{
/* FIXME: How is this done on FreeBSD? */
}
if (flags & CONTEXT_FLOATING_POINT)
{
/* we can use context->FloatSave directly as it is using the */
/* correct structure (the same as fsave/frstor) */
if (ptrace( PTRACE_GETFPREGS, pid, 0, (int) &context->FloatSave ) == -1) goto error;
context->FloatSave.Cr0NpxState = 0; /* FIXME */
}
return;
error:
file_set_error();
}
/* set a thread context */
static void set_thread_context( struct thread *thread, unsigned int flags, CONTEXT *context )
{
int pid = thread->unix_pid;
if (flags & CONTEXT_FULL)
{
struct reg regs;
if ((flags & CONTEXT_FULL) != CONTEXT_FULL) /* need to preserve some registers */
{
if (ptrace( PTRACE_GETREGS, pid, 0, (int) &regs ) == -1) goto error;
}
if (flags & CONTEXT_INTEGER)
{
regs.r_eax = context->Eax;
regs.r_ebx = context->Ebx;
regs.r_ecx = context->Ecx;
regs.r_edx = context->Edx;
regs.r_esi = context->Esi;
regs.r_edi = context->Edi;
}
if (flags & CONTEXT_CONTROL)
{
regs.r_ebp = context->Ebp;
regs.r_esp = context->Esp;
regs.r_eip = context->Eip;
regs.r_cs = context->SegCs;
regs.r_ss = context->SegSs;
regs.r_eflags = context->EFlags;
}
if (flags & CONTEXT_SEGMENTS)
{
regs.r_ds = context->SegDs;
regs.r_es = context->SegEs;
regs.r_fs = context->SegFs;
regs.r_gs = context->SegGs;
}
if (ptrace( PTRACE_SETREGS, pid, 0, (int) &regs ) == -1) goto error;
}
if (flags & CONTEXT_DEBUG_REGISTERS)
{
/* FIXME: How is this done on FreeBSD? */
}
if (flags & CONTEXT_FLOATING_POINT)
{
/* we can use context->FloatSave directly as it is using the */
/* correct structure (the same as fsave/frstor) */
if (ptrace( PTRACE_SETFPREGS, pid, 0, (int) &context->FloatSave ) == -1) goto error;
context->FloatSave.Cr0NpxState = 0; /* FIXME */
}
return;
error:
file_set_error();
}
#else /* linux || __sun__ || __FreeBSD__ */
#error You must implement get/set_thread_context for your platform
#endif /* linux || __sun__*/
#endif /* linux || __sun__ || __FreeBSD__ */
/* copy a context structure according to the flags */