.. | .. |
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5 | 5 | |
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6 | 6 | /* linkage.h ... for including arch/x86/lib/memcpy_64.S */ |
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7 | 7 | |
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8 | | -#define ENTRY(name) \ |
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9 | | - .globl name; \ |
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10 | | - name: |
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| 8 | +/* Some toolchains use other characters (e.g. '`') to mark new line in macro */ |
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| 9 | +#ifndef ASM_NL |
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| 10 | +#define ASM_NL ; |
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| 11 | +#endif |
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11 | 12 | |
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12 | | -#define ENDPROC(name) |
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| 13 | +#ifndef __ALIGN |
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| 14 | +#define __ALIGN .align 4,0x90 |
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| 15 | +#define __ALIGN_STR ".align 4,0x90" |
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| 16 | +#endif |
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| 17 | + |
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| 18 | +/* SYM_T_FUNC -- type used by assembler to mark functions */ |
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| 19 | +#ifndef SYM_T_FUNC |
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| 20 | +#define SYM_T_FUNC STT_FUNC |
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| 21 | +#endif |
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| 22 | + |
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| 23 | +/* SYM_A_* -- align the symbol? */ |
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| 24 | +#define SYM_A_ALIGN ALIGN |
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| 25 | + |
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| 26 | +/* SYM_L_* -- linkage of symbols */ |
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| 27 | +#define SYM_L_GLOBAL(name) .globl name |
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| 28 | +#define SYM_L_WEAK(name) .weak name |
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| 29 | +#define SYM_L_LOCAL(name) /* nothing */ |
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| 30 | + |
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| 31 | +#define ALIGN __ALIGN |
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| 32 | + |
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| 33 | +/* === generic annotations === */ |
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| 34 | + |
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| 35 | +/* SYM_ENTRY -- use only if you have to for non-paired symbols */ |
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| 36 | +#ifndef SYM_ENTRY |
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| 37 | +#define SYM_ENTRY(name, linkage, align...) \ |
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| 38 | + linkage(name) ASM_NL \ |
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| 39 | + align ASM_NL \ |
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| 40 | + name: |
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| 41 | +#endif |
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| 42 | + |
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| 43 | +/* SYM_START -- use only if you have to */ |
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| 44 | +#ifndef SYM_START |
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| 45 | +#define SYM_START(name, linkage, align...) \ |
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| 46 | + SYM_ENTRY(name, linkage, align) |
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| 47 | +#endif |
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| 48 | + |
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| 49 | +/* SYM_END -- use only if you have to */ |
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| 50 | +#ifndef SYM_END |
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| 51 | +#define SYM_END(name, sym_type) \ |
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| 52 | + .type name sym_type ASM_NL \ |
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| 53 | + .size name, .-name |
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| 54 | +#endif |
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| 55 | + |
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| 56 | +/* |
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| 57 | + * SYM_FUNC_START_ALIAS -- use where there are two global names for one |
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| 58 | + * function |
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| 59 | + */ |
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| 60 | +#ifndef SYM_FUNC_START_ALIAS |
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| 61 | +#define SYM_FUNC_START_ALIAS(name) \ |
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| 62 | + SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) |
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| 63 | +#endif |
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| 64 | + |
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| 65 | +/* SYM_FUNC_START -- use for global functions */ |
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| 66 | +#ifndef SYM_FUNC_START |
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| 67 | +/* |
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| 68 | + * The same as SYM_FUNC_START_ALIAS, but we will need to distinguish these two |
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| 69 | + * later. |
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| 70 | + */ |
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| 71 | +#define SYM_FUNC_START(name) \ |
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| 72 | + SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN) |
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| 73 | +#endif |
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| 74 | + |
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| 75 | +/* SYM_FUNC_START_LOCAL -- use for local functions */ |
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| 76 | +#ifndef SYM_FUNC_START_LOCAL |
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| 77 | +/* the same as SYM_FUNC_START_LOCAL_ALIAS, see comment near SYM_FUNC_START */ |
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| 78 | +#define SYM_FUNC_START_LOCAL(name) \ |
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| 79 | + SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN) |
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| 80 | +#endif |
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| 81 | + |
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| 82 | +/* SYM_FUNC_END_ALIAS -- the end of LOCAL_ALIASed or ALIASed function */ |
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| 83 | +#ifndef SYM_FUNC_END_ALIAS |
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| 84 | +#define SYM_FUNC_END_ALIAS(name) \ |
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| 85 | + SYM_END(name, SYM_T_FUNC) |
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| 86 | +#endif |
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| 87 | + |
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| 88 | +/* SYM_FUNC_START_WEAK -- use for weak functions */ |
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| 89 | +#ifndef SYM_FUNC_START_WEAK |
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| 90 | +#define SYM_FUNC_START_WEAK(name) \ |
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| 91 | + SYM_START(name, SYM_L_WEAK, SYM_A_ALIGN) |
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| 92 | +#endif |
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| 93 | + |
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| 94 | +/* |
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| 95 | + * SYM_FUNC_END -- the end of SYM_FUNC_START_LOCAL, SYM_FUNC_START, |
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| 96 | + * SYM_FUNC_START_WEAK, ... |
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| 97 | + */ |
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| 98 | +#ifndef SYM_FUNC_END |
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| 99 | +/* the same as SYM_FUNC_END_ALIAS, see comment near SYM_FUNC_START */ |
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| 100 | +#define SYM_FUNC_END(name) \ |
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| 101 | + SYM_END(name, SYM_T_FUNC) |
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| 102 | +#endif |
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13 | 103 | |
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14 | 104 | #endif /* PERF_LINUX_LINKAGE_H_ */ |
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