Static Call

include/static_call.h View source View on GitHub

Functions

__static_call_update

void __static_call_update(void *trampoline, void *fn);

Macros

STATIC_CALL_DECLARE

#define STATIC_CALL_DECLARE(name, default_fn) \
    extern __typeof__(default_fn) name##_trampoline; \
    asm(".pushsection .text, \"ax\"\n\t" \
        ".globl " #name "_trampoline\n\t" #name "_trampoline:\n\t" \
        ".byte 0xe9\n\t" /* jmp rel32 */

static_call

#define static_call(name) name##_trampoline

static_call_update

#define static_call_update(name, fn) \
    do { \
        __typeof__(&name##_trampoline) _scu_fn = (fn); \
        __static_call_update((void *) name##_trampoline, (void *) _scu_fn); \
    } while (0)

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