From 442bfab4b43daf68984e8bec8989a351a2811fdd Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sat, 7 Oct 2006 06:40:20 +0000 Subject: fixup from Bernd Schmidt to properly document DL_ADDR_TO_FUNC_PTR --- ldso/include/dl-defs.h | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'ldso') diff --git a/ldso/include/dl-defs.h b/ldso/include/dl-defs.h index d0c61d44e..18eff43c1 100644 --- a/ldso/include/dl-defs.h +++ b/ldso/include/dl-defs.h @@ -140,13 +140,19 @@ typedef struct { && (!(TFROM) || (TFROM)->loadaddr < (TPNT)->loadaddr)) #endif +/* Use this macro to convert a pointer to a function's entry point to + * a pointer to function. The pointer is assumed to have already been + * relocated. LOADADDR is passed because it may contain additional + * information needed to compute the pointer to function. + */ +#ifndef DL_ADDR_TO_FUNC_PTR +# define DL_ADDR_TO_FUNC_PTR(ADDR, LOADADDR) ((void(*)(void))(ADDR)) +#endif + /* On some platforms, computing a pointer to function is more expensive than calling a function at a given address, so this alternative is provided. The function signature must be given within parentheses, as in a type cast. */ -#ifndef DL_ADDR_TO_FUNC_PTR -# define DL_ADDR_TO_FUNC_PTR(ADDR, LOADADDR) (ADDR) -#endif #ifndef DL_CALL_FUNC_AT_ADDR # define DL_CALL_FUNC_AT_ADDR(ADDR, LOADADDR, SIGNATURE, ...) \ ((*SIGNATURE DL_ADDR_TO_FUNC_PTR ((ADDR), (LOADADDR)))(__VA_ARGS__)) -- cgit v1.2.3