1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2ea7872b9SHitoshi Mitake 3ea7872b9SHitoshi Mitake #ifndef PERF_LINUX_LINKAGE_H_ 4ea7872b9SHitoshi Mitake #define PERF_LINUX_LINKAGE_H_ 5ea7872b9SHitoshi Mitake 6ea7872b9SHitoshi Mitake /* linkage.h ... for including arch/x86/lib/memcpy_64.S */ 7ea7872b9SHitoshi Mitake 8bd5c6b81SArnaldo Carvalho de Melo /* Some toolchains use other characters (e.g. '`') to mark new line in macro */ 9bd5c6b81SArnaldo Carvalho de Melo #ifndef ASM_NL 10bd5c6b81SArnaldo Carvalho de Melo #define ASM_NL ; 11bd5c6b81SArnaldo Carvalho de Melo #endif 12ea7872b9SHitoshi Mitake 13bd5c6b81SArnaldo Carvalho de Melo #ifndef __ALIGN 14bd5c6b81SArnaldo Carvalho de Melo #define __ALIGN .align 4,0x90 15bd5c6b81SArnaldo Carvalho de Melo #define __ALIGN_STR ".align 4,0x90" 16bd5c6b81SArnaldo Carvalho de Melo #endif 17bd5c6b81SArnaldo Carvalho de Melo 18bd5c6b81SArnaldo Carvalho de Melo /* SYM_T_FUNC -- type used by assembler to mark functions */ 19bd5c6b81SArnaldo Carvalho de Melo #ifndef SYM_T_FUNC 20bd5c6b81SArnaldo Carvalho de Melo #define SYM_T_FUNC STT_FUNC 21bd5c6b81SArnaldo Carvalho de Melo #endif 22bd5c6b81SArnaldo Carvalho de Melo 23bd5c6b81SArnaldo Carvalho de Melo /* SYM_A_* -- align the symbol? */ 24bd5c6b81SArnaldo Carvalho de Melo #define SYM_A_ALIGN ALIGN 25bd5c6b81SArnaldo Carvalho de Melo 26bd5c6b81SArnaldo Carvalho de Melo /* SYM_L_* -- linkage of symbols */ 27bd5c6b81SArnaldo Carvalho de Melo #define SYM_L_GLOBAL(name) .globl name 28db1a8b97SArnaldo Carvalho de Melo #define SYM_L_WEAK(name) .weak name 29bd5c6b81SArnaldo Carvalho de Melo #define SYM_L_LOCAL(name) /* nothing */ 30bd5c6b81SArnaldo Carvalho de Melo 31bd5c6b81SArnaldo Carvalho de Melo #define ALIGN __ALIGN 32bd5c6b81SArnaldo Carvalho de Melo 33bd5c6b81SArnaldo Carvalho de Melo /* === generic annotations === */ 34bd5c6b81SArnaldo Carvalho de Melo 35bd5c6b81SArnaldo Carvalho de Melo /* SYM_ENTRY -- use only if you have to for non-paired symbols */ 36bd5c6b81SArnaldo Carvalho de Melo #ifndef SYM_ENTRY 37bd5c6b81SArnaldo Carvalho de Melo #define SYM_ENTRY(name, linkage, align...) \ 38bd5c6b81SArnaldo Carvalho de Melo linkage(name) ASM_NL \ 39bd5c6b81SArnaldo Carvalho de Melo align ASM_NL \ 40bd5c6b81SArnaldo Carvalho de Melo name: 41bd5c6b81SArnaldo Carvalho de Melo #endif 42bd5c6b81SArnaldo Carvalho de Melo 43bd5c6b81SArnaldo Carvalho de Melo /* SYM_START -- use only if you have to */ 44bd5c6b81SArnaldo Carvalho de Melo #ifndef SYM_START 45bd5c6b81SArnaldo Carvalho de Melo #define SYM_START(name, linkage, align...) \ 46bd5c6b81SArnaldo Carvalho de Melo SYM_ENTRY(name, linkage, align) 47bd5c6b81SArnaldo Carvalho de Melo #endif 48bd5c6b81SArnaldo Carvalho de Melo 49bd5c6b81SArnaldo Carvalho de Melo /* SYM_END -- use only if you have to */ 50bd5c6b81SArnaldo Carvalho de Melo #ifndef SYM_END 51bd5c6b81SArnaldo Carvalho de Melo #define SYM_END(name, sym_type) \ 52bd5c6b81SArnaldo Carvalho de Melo .type name sym_type ASM_NL \ 53e0891269SMark Rutland .set .L__sym_size_##name, .-name ASM_NL \ 54bd5c6b81SArnaldo Carvalho de Melo .size name, .-name 55bd5c6b81SArnaldo Carvalho de Melo #endif 56bd5c6b81SArnaldo Carvalho de Melo 57e0891269SMark Rutland /* SYM_ALIAS -- use only if you have to */ 58e0891269SMark Rutland #ifndef SYM_ALIAS 59e0891269SMark Rutland #define SYM_ALIAS(alias, name, sym_type, linkage) \ 60e0891269SMark Rutland linkage(alias) ASM_NL \ 61e0891269SMark Rutland .set alias, name ASM_NL \ 62e0891269SMark Rutland .type alias sym_type ASM_NL \ 63e0891269SMark Rutland .set .L__sym_size_##alias, .L__sym_size_##name ASM_NL \ 64e0891269SMark Rutland .size alias, .L__sym_size_##alias 65e0891269SMark Rutland #endif 66e0891269SMark Rutland 67bd5c6b81SArnaldo Carvalho de Melo /* SYM_FUNC_START -- use for global functions */ 68bd5c6b81SArnaldo Carvalho de Melo #ifndef SYM_FUNC_START 69bd5c6b81SArnaldo Carvalho de Melo #define SYM_FUNC_START(name) \ 70bd5c6b81SArnaldo Carvalho de Melo SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) 71bd5c6b81SArnaldo Carvalho de Melo #endif 72bd5c6b81SArnaldo Carvalho de Melo 73bd5c6b81SArnaldo Carvalho de Melo /* SYM_FUNC_START_LOCAL -- use for local functions */ 74bd5c6b81SArnaldo Carvalho de Melo #ifndef SYM_FUNC_START_LOCAL 75bd5c6b81SArnaldo Carvalho de Melo #define SYM_FUNC_START_LOCAL(name) \ 76bd5c6b81SArnaldo Carvalho de Melo SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN) 77bd5c6b81SArnaldo Carvalho de Melo #endif 78bd5c6b81SArnaldo Carvalho de Melo 79db1a8b97SArnaldo Carvalho de Melo /* SYM_FUNC_START_WEAK -- use for weak functions */ 80db1a8b97SArnaldo Carvalho de Melo #ifndef SYM_FUNC_START_WEAK 81db1a8b97SArnaldo Carvalho de Melo #define SYM_FUNC_START_WEAK(name) \ 82db1a8b97SArnaldo Carvalho de Melo SYM_START(name, SYM_L_WEAK, SYM_A_ALIGN) 83db1a8b97SArnaldo Carvalho de Melo #endif 84db1a8b97SArnaldo Carvalho de Melo 85bd5c6b81SArnaldo Carvalho de Melo /* 86bd5c6b81SArnaldo Carvalho de Melo * SYM_FUNC_END -- the end of SYM_FUNC_START_LOCAL, SYM_FUNC_START, 87bd5c6b81SArnaldo Carvalho de Melo * SYM_FUNC_START_WEAK, ... 88bd5c6b81SArnaldo Carvalho de Melo */ 89bd5c6b81SArnaldo Carvalho de Melo #ifndef SYM_FUNC_END 90bd5c6b81SArnaldo Carvalho de Melo #define SYM_FUNC_END(name) \ 91bd5c6b81SArnaldo Carvalho de Melo SYM_END(name, SYM_T_FUNC) 92bd5c6b81SArnaldo Carvalho de Melo #endif 93ea7872b9SHitoshi Mitake 94e0891269SMark Rutland /* 95e0891269SMark Rutland * SYM_FUNC_ALIAS -- define a global alias for an existing function 96e0891269SMark Rutland */ 97e0891269SMark Rutland #ifndef SYM_FUNC_ALIAS 98e0891269SMark Rutland #define SYM_FUNC_ALIAS(alias, name) \ 99e0891269SMark Rutland SYM_ALIAS(alias, name, SYM_T_FUNC, SYM_L_GLOBAL) 100e0891269SMark Rutland #endif 101e0891269SMark Rutland 102e0891269SMark Rutland /* 103e0891269SMark Rutland * SYM_FUNC_ALIAS_LOCAL -- define a local alias for an existing function 104e0891269SMark Rutland */ 105e0891269SMark Rutland #ifndef SYM_FUNC_ALIAS_LOCAL 106e0891269SMark Rutland #define SYM_FUNC_ALIAS_LOCAL(alias, name) \ 107e0891269SMark Rutland SYM_ALIAS(alias, name, SYM_T_FUNC, SYM_L_LOCAL) 108e0891269SMark Rutland #endif 109e0891269SMark Rutland 110e0891269SMark Rutland /* 111e0891269SMark Rutland * SYM_FUNC_ALIAS_WEAK -- define a weak global alias for an existing function 112e0891269SMark Rutland */ 113e0891269SMark Rutland #ifndef SYM_FUNC_ALIAS_WEAK 114e0891269SMark Rutland #define SYM_FUNC_ALIAS_WEAK(alias, name) \ 115e0891269SMark Rutland SYM_ALIAS(alias, name, SYM_T_FUNC, SYM_L_WEAK) 116e0891269SMark Rutland #endif 117e0891269SMark Rutland 118*4402e360SArnaldo Carvalho de Melo // In the kernel sources (include/linux/cfi_types.h), this has a different 119*4402e360SArnaldo Carvalho de Melo // definition when CONFIG_CFI_CLANG is used, for tools/ just use the !clang 120*4402e360SArnaldo Carvalho de Melo // definition: 121*4402e360SArnaldo Carvalho de Melo #ifndef SYM_TYPED_START 122*4402e360SArnaldo Carvalho de Melo #define SYM_TYPED_START(name, linkage, align...) \ 123*4402e360SArnaldo Carvalho de Melo SYM_START(name, linkage, align) 124*4402e360SArnaldo Carvalho de Melo #endif 125*4402e360SArnaldo Carvalho de Melo 126*4402e360SArnaldo Carvalho de Melo #ifndef SYM_TYPED_FUNC_START 127*4402e360SArnaldo Carvalho de Melo #define SYM_TYPED_FUNC_START(name) \ 128*4402e360SArnaldo Carvalho de Melo SYM_TYPED_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) 129*4402e360SArnaldo Carvalho de Melo #endif 130*4402e360SArnaldo Carvalho de Melo 131ea7872b9SHitoshi Mitake #endif /* PERF_LINUX_LINKAGE_H_ */ 132