diff options
| author | Diego Biurrun <diego@biurrun.de> | 2013-01-09 23:17:08 +0100 |
|---|---|---|
| committer | Diego Biurrun <diego@biurrun.de> | 2013-01-18 22:02:03 +0100 |
| commit | d633d12b2cc999cee3ac25bf9a810fe7ff03726d (patch) | |
| tree | c747f90a8fc6f75308848f1f534a24f55d95f05e /libavutil/x86 | |
| parent | ef5d41a5534b65f03d02f2e11a503ab8416bfc3b (diff) | |
| download | ffmpeg-d633d12b2cc999cee3ac25bf9a810fe7ff03726d.tar.gz | |
x86inc: Add cvisible macro for C functions with public prefix
This allows defining externally visible library symbols.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavutil/x86')
| -rw-r--r-- | libavutil/x86/x86inc.asm | 42 | ||||
| -rw-r--r-- | libavutil/x86/x86util.asm | 1 |
2 files changed, 29 insertions, 14 deletions
diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm index 4d8d0db2c7..a18c6f466e 100644 --- a/libavutil/x86/x86inc.asm +++ b/libavutil/x86/x86inc.asm @@ -38,6 +38,10 @@ %define private_prefix x264 %endif +%ifndef public_prefix + %define public_prefix private_prefix +%endif + %define WIN64 0 %define UNIX64 0 %if ARCH_X86_64 @@ -624,33 +628,43 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14 ; Applies any symbol mangling needed for C linkage, and sets up a define such that ; subsequent uses of the function name automatically refer to the mangled version. ; Appends cpuflags to the function name if cpuflags has been specified. +; The "" empty default parameter is a workaround for nasm, which fails if SUFFIX +; is empty and we call cglobal_internal with just %1 %+ SUFFIX (without %2). %macro cglobal 1-2+ "" ; name, [PROLOGUE args] - ; the "" is a workaround for nasm, which fails if SUFFIX is empty - ; and we call cglobal_internal with just %1 %+ SUFFIX (without %2) - cglobal_internal %1 %+ SUFFIX, %2 + cglobal_internal 1, %1 %+ SUFFIX, %2 +%endmacro +%macro cvisible 1-2+ "" ; name, [PROLOGUE args] + cglobal_internal 0, %1 %+ SUFFIX, %2 %endmacro -%macro cglobal_internal 1-2+ - %ifndef cglobaled_%1 - %xdefine %1 mangle(private_prefix %+ _ %+ %1) - %xdefine %1.skip_prologue %1 %+ .skip_prologue - CAT_XDEFINE cglobaled_, %1, 1 +%macro cglobal_internal 2-3+ + %if %1 + %xdefine %%FUNCTION_PREFIX private_prefix + %xdefine %%VISIBILITY hidden + %else + %xdefine %%FUNCTION_PREFIX public_prefix + %xdefine %%VISIBILITY + %endif + %ifndef cglobaled_%2 + %xdefine %2 mangle(%%FUNCTION_PREFIX %+ _ %+ %2) + %xdefine %2.skip_prologue %2 %+ .skip_prologue + CAT_XDEFINE cglobaled_, %2, 1 %endif - %xdefine current_function %1 + %xdefine current_function %2 %ifidn __OUTPUT_FORMAT__,elf - global %1:function hidden + global %2:function %%VISIBILITY %else - global %1 + global %2 %endif align function_align - %1: + %2: RESET_MM_PERMUTATION ; not really needed, but makes disassembly somewhat nicer %xdefine rstk rsp %assign stack_offset 0 %assign stack_size 0 %assign stack_size_padded 0 %assign xmm_regs_used 0 - %ifnidn %2, "" - PROLOGUE %2 + %ifnidn %3, "" + PROLOGUE %3 %endif %endmacro diff --git a/libavutil/x86/x86util.asm b/libavutil/x86/x86util.asm index 40738c9c4c..79a023fc52 100644 --- a/libavutil/x86/x86util.asm +++ b/libavutil/x86/x86util.asm @@ -24,6 +24,7 @@ ;****************************************************************************** %define private_prefix ff +%define public_prefix avpriv %define cpuflags_mmxext cpuflags_mmx2 %include "libavutil/x86/x86inc.asm" |