x86inc: allow manual use of WIN64_SPILL_XMM.

Functions using INIT_MMX may still access XMM registers through direct means (xmm0-15). Therefore, they still need to be marked for clobber so they can be properly saved/restored. Signed-off-by: Ronald S. Bultje <[email protected]>
zhengxj91 · Feb 8, 2012 · 9cf7385 · 9cf7385
1 parent 314af0f
commit 9cf7385
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
@@ -290,7 +290,11 @@ DECLARE_REG 6, rax, eax, ax, al, [rsp + stack_offset + 56]
  push r5
  %assign stack_offset stack_offset+16
  %endif
- WIN64_SPILL_XMM %3
+ %if mmsize == 8
+ %assign xmm_regs_used 0
+ %else
+ WIN64_SPILL_XMM %3
+ %endif
  LOAD_IF_USED 4, %1
  LOAD_IF_USED 5, %1
  LOAD_IF_USED 6, %1
@@ -299,9 +303,6 @@ DECLARE_REG 6, rax, eax, ax, al, [rsp + stack_offset + 56]
 
 %macro WIN64_SPILL_XMM 1
  %assign xmm_regs_used %1
- %if mmsize == 8
- %assign xmm_regs_used 0
- %endif
  ASSERT xmm_regs_used <= 16
  %if xmm_regs_used > 6
  sub rsp, (xmm_regs_used-6)*16+16