Commit fd2c4a06 authored by Diego Biurrun's avatar Diego Biurrun Committed by Fiona Glaser
Browse files

x86inc: Add cvisible macro for C functions with public prefix



This allows defining externally visible library symbols.
Signed-off-by: Diego Biurrun's avatarDiego Biurrun <diego@biurrun.de>
parent faf3dbe6
......@@ -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
......@@ -643,33 +647,43 @@ BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae,
; 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 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 cvisible 1-2+ "" ; name, [PROLOGUE args]
cglobal_internal 0, %1 %+ SUFFIX, %2
%endmacro
%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
......
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