sdk/lib/rtl/amd64/except_asm.S

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Runtime Library (RTL)
   4  * FILE:            lib/rtl/amd64/except_asm.S
   5  * PURPOSE:         Exception support for AMD64
   6  * PROGRAMMERS:     Timo Kreuzer (timo.kreuzer@reactos.org)
   7  */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include <asm.inc>
  12 #include <ksamd64.inc>
  13
  14 /* FUNCTIONS *****************************************************************/
  15
  16 .code64
  17
  18 /*
  19  * VOID NTAPI
  20  * RtlCaptureContext(
  21  *     PCONTEXT ContextRecord); <rcx>
  22  */
  23 PUBLIC RtlCaptureContext
  24 .PROC RtlCaptureContext
  25
  26     /* Push rflags */
  27     pushfq
  28     .ALLOCSTACK 8
  29     .ENDPROLOG
  30
  31     /* Save the basic register context */
  32     mov [rcx + CONTEXT_Rax], rax
  33     mov [rcx + CONTEXT_Rcx], rcx
  34     mov [rcx + CONTEXT_Rdx], rdx
  35
  36     /* Load rflags into rax */
  37     mov rax, [rsp]
  38
  39     mov [rcx + CONTEXT_Rbx], rbx
  40     mov [rcx + CONTEXT_Rsi], rsi
  41     mov [rcx + CONTEXT_Rdi], rdi
  42
  43     /* Store rflags */
  44     mov [rcx + CONTEXT_EFlags], rax
  45
  46     mov [rcx + CONTEXT_Rbp], rbp
  47     mov [rcx + CONTEXT_R8], r8
  48     mov [rcx + CONTEXT_R9], r9
  49
  50     /* Load former stack pointer in rax */
  51     lea rax, [rsp + 16]
  52
  53     mov [rcx + CONTEXT_R10], r10
  54     mov [rcx + CONTEXT_R11], r11
  55     mov [rcx + CONTEXT_R12], r12
  56
  57     /* Store stack pointer */
  58     mov [rcx + CONTEXT_Rsp], rax
  59
  60     mov [rcx + CONTEXT_R13], r13
  61     mov [rcx + CONTEXT_R14], r14
  62     mov [rcx + CONTEXT_R15], r15
  63
  64     /* Load return address in rax */
  65     mov rax, [rsp + 8]
  66
  67     /* Safe segment selectors */
  68     mov [rcx + CONTEXT_SegCs], cs
  69     mov [rcx + CONTEXT_SegDs], ds
  70     mov [rcx + CONTEXT_SegEs], es
  71     mov [rcx + CONTEXT_SegFs], fs
  72     mov [rcx + CONTEXT_SegGs], gs
  73     mov [rcx + CONTEXT_SegSs], ss
  74
  75     /* Store return address */
  76     mov [rcx + CONTEXT_Rip], rax
  77
  78     /* Safe xmm registers */
  79     movdqa [rcx + CONTEXT_Xmm0], xmm0
  80     movdqa [rcx + CONTEXT_Xmm1], xmm1
  81     movdqa [rcx + CONTEXT_Xmm2], xmm2
  82     movdqa [rcx + CONTEXT_Xmm3], xmm3
  83     movdqa [rcx + CONTEXT_Xmm4], xmm4
  84     movdqa [rcx + CONTEXT_Xmm5], xmm5
  85     movdqa [rcx + CONTEXT_Xmm6], xmm6
  86     movdqa [rcx + CONTEXT_Xmm7], xmm7
  87     movdqa [rcx + CONTEXT_Xmm8], xmm8
  88     movdqa [rcx + CONTEXT_Xmm9], xmm9
  89     movdqa [rcx + CONTEXT_Xmm10], xmm10
  90     movdqa [rcx + CONTEXT_Xmm11], xmm11
  91     movdqa [rcx + CONTEXT_Xmm12], xmm12
  92     movdqa [rcx + CONTEXT_Xmm13], xmm13
  93     movdqa [rcx + CONTEXT_Xmm14], xmm14
  94     movdqa [rcx + CONTEXT_Xmm15], xmm15
  95
  96     /* Cleanup stack and return */
  97     add rsp, 8
  98     ret
  99 .ENDP
 100
 101 END
 102
 103