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avcodec/h264: Fix segfault in 4:2:2 chroma deblock with 32-bit msvc

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Using rNm and x86inc's stack allocation with a negative value at the same
time isn't supported, and caused the original stack pointer to be clobbered
when using a compiler that doesn't support stack alignment.
This commit is contained in:
Henrik Gramner 2016-02-05 21:01:49 +01:00
parent 6d14e32555
commit aa751573fe
1 changed files with 3 additions and 1 deletions
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4
libavcodec/x86/h264_deblock.asm
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@ -867,7 +867,8 @@ ff_chroma_inter_body_mmxext:
%define t5 r4
%define t6 r5
cglobal deblock_h_chroma422_8, 5, 6, 0, 0-(1+ARCH_X86_64*2)*mmsize
cglobal deblock_h_chroma422_8, 5, 6
SUB rsp, (1+ARCH_X86_64*2)*mmsize
%if ARCH_X86_64
%define buf0 [rsp+16]
%define buf1 [rsp+8]
@ -907,6 +908,7 @@ cglobal deblock_h_chroma422_8, 5, 6, 0, 0-(1+ARCH_X86_64*2)*mmsize
movq m0, buf0
movq m3, buf1
TRANSPOSE8x4B_STORE PASS8ROWS(t5, r0, r1, t6)
ADD rsp, (1+ARCH_X86_64*2)*mmsize
RET
; in: %1=p0 %2=p1 %3=q1