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Unified Diff: source/libvpx/third_party/x86inc/x86inc.asm

Issue 341293003: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 6 years, 6 months ago
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Index: source/libvpx/third_party/x86inc/x86inc.asm
===================================================================
--- source/libvpx/third_party/x86inc/x86inc.asm (revision 278778)
+++ source/libvpx/third_party/x86inc/x86inc.asm (working copy)
@@ -395,6 +395,23 @@
%assign n_arg_names %0
%endmacro
+%if ARCH_X86_64
+%macro ALLOC_STACK 2 ; stack_size, num_regs
+ %assign %%stack_aligment ((mmsize + 15) & ~15)
+ %assign stack_size_padded %1
+
+ %assign %%reg_num (%2 - 1)
+ %xdefine rsp_tmp r %+ %%reg_num
+ mov rsp_tmp, rsp
+ sub rsp, stack_size_padded
+ and rsp, ~(%%stack_aligment - 1)
+%endmacro
+
+%macro RESTORE_STACK 0 ; reset rsp register
+ mov rsp, rsp_tmp
+%endmacro
+%endif
+
%if WIN64 ; Windows x64 ;=================================================
DECLARE_REG 0, rcx, ecx, cx, cl
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