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x86inc: Various minor backports from x264

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Reviewed-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Henrik Gramner 2015-08-02 22:40:03 +02:00 committed by Michael Niedermayer
parent f151fbd9e5
commit 127203ba5a
1 changed files with 21 additions and 11 deletions
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32
libavutil/x86/x86inc.asm
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@ -1,7 +1,7 @@
;*****************************************************************************
;* x86inc.asm: x264asm abstraction layer
;*****************************************************************************
;* Copyright (C) 2005-2013 x264 project
;* Copyright (C) 2005-2015 x264 project
;*
;* Authors: Loren Merritt <lorenm@u.washington.edu>
;* Anton Mitrofanov <BugMaster@narod.ru>
@ -56,6 +56,15 @@
%endif
%endif
%define FORMAT_ELF 0
%ifidn __OUTPUT_FORMAT__,elf
%define FORMAT_ELF 1
%elifidn __OUTPUT_FORMAT__,elf32
%define FORMAT_ELF 1
%elifidn __OUTPUT_FORMAT__,elf64
%define FORMAT_ELF 1
%endif
%ifdef PREFIX
%define mangle(x) _ %+ x
%else
@ -678,7 +687,7 @@ BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae,
CAT_XDEFINE cglobaled_, %2, 1
%endif
%xdefine current_function %2
%ifidn __OUTPUT_FORMAT__,elf
%if FORMAT_ELF
global %2:function %%VISIBILITY
%else
global %2
@ -704,14 +713,16 @@ BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae,
; like cextern, but without the prefix
%macro cextern_naked 1
%xdefine %1 mangle(%1)
%ifdef PREFIX
%xdefine %1 mangle(%1)
%endif
CAT_XDEFINE cglobaled_, %1, 1
extern %1
%endmacro
%macro const 1-2+
%xdefine %1 mangle(private_prefix %+ _ %+ %1)
%ifidn __OUTPUT_FORMAT__,elf
%if FORMAT_ELF
global %1:data hidden
%else
global %1
@ -719,10 +730,9 @@ BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae,
%1: %2
%endmacro
; This is needed for ELF, otherwise the GNU linker assumes the stack is
; executable by default.
%ifidn __OUTPUT_FORMAT__,elf
[section .note.GNU-stack noalloc noexec nowrite progbits]
; This is needed for ELF, otherwise the GNU linker assumes the stack is executable by default.
%if FORMAT_ELF
[SECTION .note.GNU-stack noalloc noexec nowrite progbits]
%endif
; Overrides the default .text section.
@ -745,8 +755,8 @@ BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae,
%assign cpuflags_avx (1<<11)| cpuflags_sse42
%assign cpuflags_xop (1<<12)| cpuflags_avx
%assign cpuflags_fma4 (1<<13)| cpuflags_avx
%assign cpuflags_avx2 (1<<14)| cpuflags_avx
%assign cpuflags_fma3 (1<<15)| cpuflags_avx
%assign cpuflags_fma3 (1<<14)| cpuflags_avx
%assign cpuflags_avx2 (1<<15)| cpuflags_fma3
%assign cpuflags_cache32 (1<<16)
%assign cpuflags_cache64 (1<<17)
@ -795,7 +805,7 @@ BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae,
%endif
%endif
%if cpuflag(sse2)
%if ARCH_X86_64 || cpuflag(sse2)
CPUNOP amdnop
%else
CPUNOP basicnop