lib/Target/X86/X86CompilationCallback_Win64.asm

   1 ;;===-- X86CompilationCallback_Win64.asm - Implement Win64 JIT callback ---===
   2 ;;
   3 ;;                     The LLVM Compiler Infrastructure
   4 ;;
   5 ;; This file is distributed under the University of Illinois Open Source
   6 ;; License. See LICENSE.TXT for details.
   7 ;;
   8 ;;===----------------------------------------------------------------------===
   9 ;;
  10 ;; This file implements the JIT interfaces for the X86 target.
  11 ;;
  12 ;;===----------------------------------------------------------------------===
  13
  14 extrn X86CompilationCallback2: PROC
  15
  16 .code
  17 X86CompilationCallback proc
  18     push    rbp
  19
  20     ; Save RSP.
  21     mov     rbp, rsp
  22
  23     ; Save all int arg registers
  24     ; WARNING: We cannot use register spill area - we're generating stubs by hands!
  25     push    rcx
  26     push    rdx
  27     push    r8
  28     push    r9
  29
  30     ; Align stack on 16-byte boundary.
  31     and     rsp, -16
  32
  33     ; Save all XMM arg registers. Also allocate reg spill area.
  34     sub     rsp, 96
  35     movaps  [rsp   +32],  xmm0
  36     movaps  [rsp+16+32],  xmm1
  37     movaps  [rsp+32+32],  xmm2
  38     movaps  [rsp+48+32],  xmm3
  39
  40     ; JIT callee
  41
  42     ; Pass prev frame and return address.
  43     mov     rcx, rbp
  44     mov     rdx, qword ptr [rbp+8]
  45     call    X86CompilationCallback2
  46
  47     ; Restore all XMM arg registers.
  48     movaps  xmm3, [rsp+48+32]
  49     movaps  xmm2, [rsp+32+32]
  50     movaps  xmm1, [rsp+16+32]
  51     movaps  xmm0, [rsp   +32]
  52
  53     ; Restore RSP.
  54     mov     rsp, rbp
  55
  56     ; Restore all int arg registers
  57     sub     rsp, 32
  58     pop     r9
  59     pop     r8
  60     pop     rdx
  61     pop     rcx
  62
  63     ; Restore RBP.
  64     pop     rbp
  65     ret
  66 X86CompilationCallback endp
  67
  68 End