From 4ce8d61a5cb8a0e3f68bff8400ba2b8246c9a58f Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Mon, 30 Jul 2007 02:37:42 +0100 Subject: Import various libgcc functions from syslinux. Experimentation reveals that gcc ignores -mrtd for the implicit arithmetic functions (e.g. __udivdi3), but not for the implicit memcpy() and memset() functions. Mark the implicit arithmetic functions with __attribute__((cdecl)) to compensate for this. (Note: we cannot mark with with __cdecl, because we define __cdecl to incorporate regparm(0) as well.) --- src/libgcc/memcpy.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 src/libgcc/memcpy.c (limited to 'src/libgcc/memcpy.c') diff --git a/src/libgcc/memcpy.c b/src/libgcc/memcpy.c new file mode 100644 index 000000000..e98b78384 --- /dev/null +++ b/src/libgcc/memcpy.c @@ -0,0 +1,18 @@ +/** @file + * + * gcc sometimes likes to insert implicit calls to memcpy(). + * Unfortunately, there doesn't seem to be any way to prevent it from + * doing this, or to force it to use the optimised memcpy() as seen by + * C code; it insists on inserting a symbol reference to "memcpy". We + * therefore include wrapper functions just to keep gcc happy. + * + */ + +#include + +void * gcc_implicit_memcpy ( void *dest, const void *src, + size_t len ) asm ( "memcpy" ); + +void * gcc_implicit_memcpy ( void *dest, const void *src, size_t len ) { + return memcpy ( dest, src, len ); +} -- cgit v1.2.3-55-g7522