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authorRonald S. Bultje <rsbultje@gmail.com>2012-12-12 20:00:22 +0100
committerMartin Storsjö <martin@martin.st>2012-12-12 21:30:49 +0200
commit140367aff9284a913aaf207f949cb7b116e1b197 (patch)
tree020819261c6493cb0448b81d7aa00c7a2bbaa0fe /libavutil/x86
parent29d2595ad70eaa3ca4ce0fc1e4738ac7cc49497f (diff)
downloadffmpeg-140367aff9284a913aaf207f949cb7b116e1b197.tar.gz
x86inc: fix stack alignment on win64
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavutil/x86')
-rw-r--r--libavutil/x86/x86inc.asm10
1 files changed, 6 insertions, 4 deletions
diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index 483ae7b048..de0f22c2dc 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -428,7 +428,7 @@ DECLARE_REG 14, R15, 120
%assign %%i xmm_regs_used
%rep (xmm_regs_used-6)
%assign %%i %%i-1
- movdqa [rsp + (%%i-6)*16 + stack_size], xmm %+ %%i
+ movdqa [rsp + (%%i-6)*16 + stack_size + (~stack_offset&8)], xmm %+ %%i
%endrep
%endmacro
@@ -436,8 +436,7 @@ DECLARE_REG 14, R15, 120
%assign xmm_regs_used %1
ASSERT xmm_regs_used <= 16
%if xmm_regs_used > 6
- %assign stack_size_padded (xmm_regs_used-6)*16+16-gprsize-(stack_offset&15)
- SUB rsp, stack_size_padded
+ SUB rsp, (xmm_regs_used-6)*16+16
WIN64_PUSH_XMM
%endif
%endmacro
@@ -447,8 +446,11 @@ DECLARE_REG 14, R15, 120
%assign %%i xmm_regs_used
%rep (xmm_regs_used-6)
%assign %%i %%i-1
- movdqa xmm %+ %%i, [%1 + (%%i-6)*16+stack_size]
+ movdqa xmm %+ %%i, [%1 + (%%i-6)*16+stack_size+(~stack_offset&8)]
%endrep
+ %if stack_size_padded == 0
+ add %1, (xmm_regs_used-6)*16+16
+ %endif
%endif
%if stack_size_padded > 0
%if stack_size > 0 && (mmsize == 32 || HAVE_ALIGNED_STACK == 0)