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ntdll: Avoid copying and restoring the context in RtlCaptureContext for x86_64.

This commit is contained in:
Alexandre Julliard 2011-01-27 12:20:19 +01:00
parent aa4ad6d766
commit 33e6238f04
1 changed files with 50 additions and 6 deletions
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56
dlls/ntdll/signal_x86_64.c
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@ -1459,12 +1459,56 @@ static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
/***********************************************************************
* RtlCaptureContext (NTDLL.@)
*/
void WINAPI __regs_RtlCaptureContext( CONTEXT *context, CONTEXT *regs )
{
*context = *regs;
}
DEFINE_REGS_ENTRYPOINT( RtlCaptureContext, 1 )
__ASM_GLOBAL_FUNC( RtlCaptureContext,
"pushfq\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
"movl $0x001000f,0x30(%rcx)\n\t" /* context->ContextFlags */
"stmxcsr 0x34(%rcx)\n\t" /* context->MxCsr */
"movw %cs,0x38(%rcx)\n\t" /* context->SegCs */
"movw %ds,0x3a(%rcx)\n\t" /* context->SegDs */
"movw %es,0x3c(%rcx)\n\t" /* context->SegEs */
"movw %fs,0x3e(%rcx)\n\t" /* context->SegFs */
"movw %gs,0x40(%rcx)\n\t" /* context->SegGs */
"movw %ss,0x42(%rcx)\n\t" /* context->SegSs */
"popq 0x44(%rcx)\n\t" /* context->Eflags */
__ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
"movq %rax,0x78(%rcx)\n\t" /* context->Rax */
"movq %rcx,0x80(%rcx)\n\t" /* context->Rcx */
"movq %rdx,0x88(%rcx)\n\t" /* context->Rdx */
"movq %rbx,0x90(%rcx)\n\t" /* context->Rbx */
"leaq 8(%rsp),%rax\n\t"
"movq %rax,0x98(%rcx)\n\t" /* context->Rsp */
"movq %rbp,0xa0(%rcx)\n\t" /* context->Rbp */
"movq %rsi,0xa8(%rcx)\n\t" /* context->Rsi */
"movq %rdi,0xb0(%rcx)\n\t" /* context->Rdi */
"movq %r8,0xb8(%rcx)\n\t" /* context->R8 */
"movq %r9,0xc0(%rcx)\n\t" /* context->R9 */
"movq %r10,0xc8(%rcx)\n\t" /* context->R10 */
"movq %r11,0xd0(%rcx)\n\t" /* context->R11 */
"movq %r12,0xd8(%rcx)\n\t" /* context->R12 */
"movq %r13,0xe0(%rcx)\n\t" /* context->R13 */
"movq %r14,0xe8(%rcx)\n\t" /* context->R14 */
"movq %r15,0xf0(%rcx)\n\t" /* context->R15 */
"movq (%rsp),%rax\n\t"
"movq %rax,0xf8(%rcx)\n\t" /* context->Rip */
"fxsave 0x100(%rcx)\n\t" /* context->FtlSave */
"movdqa %xmm0,0x1a0(%rcx)\n\t" /* context->Xmm0 */
"movdqa %xmm1,0x1b0(%rcx)\n\t" /* context->Xmm1 */
"movdqa %xmm2,0x1c0(%rcx)\n\t" /* context->Xmm2 */
"movdqa %xmm3,0x1d0(%rcx)\n\t" /* context->Xmm3 */
"movdqa %xmm4,0x1e0(%rcx)\n\t" /* context->Xmm4 */
"movdqa %xmm5,0x1f0(%rcx)\n\t" /* context->Xmm5 */
"movdqa %xmm6,0x200(%rcx)\n\t" /* context->Xmm6 */
"movdqa %xmm7,0x210(%rcx)\n\t" /* context->Xmm7 */
"movdqa %xmm8,0x220(%rcx)\n\t" /* context->Xmm8 */
"movdqa %xmm9,0x230(%rcx)\n\t" /* context->Xmm9 */
"movdqa %xmm10,0x240(%rcx)\n\t" /* context->Xmm10 */
"movdqa %xmm11,0x250(%rcx)\n\t" /* context->Xmm11 */
"movdqa %xmm12,0x260(%rcx)\n\t" /* context->Xmm12 */
"movdqa %xmm13,0x270(%rcx)\n\t" /* context->Xmm13 */
"movdqa %xmm14,0x280(%rcx)\n\t" /* context->Xmm14 */
"movdqa %xmm15,0x290(%rcx)\n\t" /* context->Xmm15 */
"ret" );
/***********************************************************************
* set_cpu_context