From cb273fdad891d312c15110cd4eab95f5db39dcb2 Mon Sep 17 00:00:00 2001 From: Thomas Preud'homme Date: Sat, 12 Nov 2016 23:16:06 +0800 Subject: Do section relocation in architecture backend --- c67-link.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 c67-link.c (limited to 'c67-link.c') diff --git a/c67-link.c b/c67-link.c new file mode 100644 index 0000000..d8b0f7e --- /dev/null +++ b/c67-link.c @@ -0,0 +1,35 @@ +#include "tcc.h" +#define HAVE_SECTION_RELOC + +void relocate_init(Section *sr) {} + +void relocate(TCCState *s1, ElfW_Rel *rel, int type, char *ptr, addr_t addr, addr_t val) +{ + switch(type) { + case R_C60_32: + *(int *)ptr += val; + break; + case R_C60LO16: + { + uint32_t orig; + + /* put the low 16 bits of the absolute address add to what is + already there */ + orig = ((*(int *)(ptr )) >> 7) & 0xffff; + orig |= (((*(int *)(ptr+4)) >> 7) & 0xffff) << 16; + + /* patch both at once - assumes always in pairs Low - High */ + *(int *) ptr = (*(int *) ptr & (~(0xffff << 7)) ) | + (((val+orig) & 0xffff) << 7); + *(int *)(ptr+4) = (*(int *)(ptr+4) & (~(0xffff << 7)) ) | + ((((val+orig)>>16) & 0xffff) << 7); + } + break; + case R_C60HI16: + break; + default: + fprintf(stderr,"FIXME: handle reloc type %x at %x [%p] to %x\n", + type, (unsigned) addr, ptr, (unsigned) val); + break; + } +} -- cgit v1.3.1