From: "Ronald S. Bultje" <[email protected]>
On Win64, these registers are callee-save, so not saving/restoring them
correctly is a violation of ABI and can lead to crashes or corrupt data.
---
libavcodec/x86/h264_idct.asm | 3 +++
libavcodec/x86/h264_intrapred.asm | 1 +
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/libavcodec/x86/h264_idct.asm b/libavcodec/x86/h264_idct.asm
index a132480..5a24b0e 100644
--- a/libavcodec/x86/h264_idct.asm
+++ b/libavcodec/x86/h264_idct.asm
@@ -968,6 +968,9 @@ cglobal h264_idct_add8_8_sse2, 5, 7, 8
%macro IDCT_DC_DEQUANT 2
cglobal h264_luma_dc_dequant_idct_%1, 3,4,%2
+%if %2 != 0
+ WIN64_SPILL_XMM rsp
+%endif
movq m3, [r1+24]
movq m2, [r1+16]
movq m1, [r1+ 8]
diff --git a/libavcodec/x86/h264_intrapred.asm
b/libavcodec/x86/h264_intrapred.asm
index 61c69c6..fca8296 100644
--- a/libavcodec/x86/h264_intrapred.asm
+++ b/libavcodec/x86/h264_intrapred.asm
@@ -1931,6 +1931,7 @@ cglobal pred8x8l_vertical_right_mmxext, 4,5
%macro PRED8x8L_VERTICAL_RIGHT 1
cglobal pred8x8l_vertical_right_%1, 4,5,7
+ WIN64_SPILL_XMM rsp
sub r0, r3
lea r4, [r0+r3*2]
movq mm0, [r0+r3*1-8]
--
1.7.7.4
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