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104 lines
2.6 KiB
104 lines
2.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef PERF_LINUX_LINKAGE_H_ |
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#define PERF_LINUX_LINKAGE_H_ |
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/* linkage.h ... for including arch/x86/lib/memcpy_64.S */ |
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/* Some toolchains use other characters (e.g. '`') to mark new line in macro */ |
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#ifndef ASM_NL |
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#define ASM_NL ; |
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#endif |
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#ifndef __ALIGN |
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#define __ALIGN .align 4,0x90 |
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#define __ALIGN_STR ".align 4,0x90" |
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#endif |
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/* SYM_T_FUNC -- type used by assembler to mark functions */ |
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#ifndef SYM_T_FUNC |
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#define SYM_T_FUNC STT_FUNC |
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#endif |
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/* SYM_A_* -- align the symbol? */ |
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#define SYM_A_ALIGN ALIGN |
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/* SYM_L_* -- linkage of symbols */ |
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#define SYM_L_GLOBAL(name) .globl name |
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#define SYM_L_WEAK(name) .weak name |
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#define SYM_L_LOCAL(name) /* nothing */ |
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#define ALIGN __ALIGN |
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/* === generic annotations === */ |
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/* SYM_ENTRY -- use only if you have to for non-paired symbols */ |
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#ifndef SYM_ENTRY |
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#define SYM_ENTRY(name, linkage, align...) \ |
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linkage(name) ASM_NL \ |
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align ASM_NL \ |
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name: |
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#endif |
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/* SYM_START -- use only if you have to */ |
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#ifndef SYM_START |
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#define SYM_START(name, linkage, align...) \ |
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SYM_ENTRY(name, linkage, align) |
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#endif |
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/* SYM_END -- use only if you have to */ |
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#ifndef SYM_END |
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#define SYM_END(name, sym_type) \ |
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.type name sym_type ASM_NL \ |
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.size name, .-name |
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#endif |
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/* |
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* SYM_FUNC_START_ALIAS -- use where there are two global names for one |
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* function |
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*/ |
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#ifndef SYM_FUNC_START_ALIAS |
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#define SYM_FUNC_START_ALIAS(name) \ |
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SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) |
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#endif |
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/* SYM_FUNC_START -- use for global functions */ |
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#ifndef SYM_FUNC_START |
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/* |
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* The same as SYM_FUNC_START_ALIAS, but we will need to distinguish these two |
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* later. |
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*/ |
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#define SYM_FUNC_START(name) \ |
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SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) |
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#endif |
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/* SYM_FUNC_START_LOCAL -- use for local functions */ |
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#ifndef SYM_FUNC_START_LOCAL |
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/* the same as SYM_FUNC_START_LOCAL_ALIAS, see comment near SYM_FUNC_START */ |
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#define SYM_FUNC_START_LOCAL(name) \ |
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SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN) |
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#endif |
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/* SYM_FUNC_END_ALIAS -- the end of LOCAL_ALIASed or ALIASed function */ |
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#ifndef SYM_FUNC_END_ALIAS |
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#define SYM_FUNC_END_ALIAS(name) \ |
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SYM_END(name, SYM_T_FUNC) |
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#endif |
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/* SYM_FUNC_START_WEAK -- use for weak functions */ |
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#ifndef SYM_FUNC_START_WEAK |
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#define SYM_FUNC_START_WEAK(name) \ |
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SYM_START(name, SYM_L_WEAK, SYM_A_ALIGN) |
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#endif |
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/* |
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* SYM_FUNC_END -- the end of SYM_FUNC_START_LOCAL, SYM_FUNC_START, |
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* SYM_FUNC_START_WEAK, ... |
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*/ |
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#ifndef SYM_FUNC_END |
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/* the same as SYM_FUNC_END_ALIAS, see comment near SYM_FUNC_START */ |
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#define SYM_FUNC_END(name) \ |
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SYM_END(name, SYM_T_FUNC) |
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#endif |
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#endif /* PERF_LINUX_LINKAGE_H_ */
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