diff options
author | Rich Felker <dalias@aerifal.cx> | 2011-06-18 19:48:42 -0400 |
---|---|---|
committer | Rich Felker <dalias@aerifal.cx> | 2011-06-18 19:48:42 -0400 |
commit | 51e2d8310222ddd4d4e895f55c627100d863aa95 (patch) | |
tree | d64c18bacc3fc0609abc2d88d6d336f84d3e4e74 /arch/x86_64 | |
parent | d43ff110bcb258df61448d21da3b1a89088388f6 (diff) | |
download | musl-51e2d8310222ddd4d4e895f55c627100d863aa95.tar.gz |
experimental dynamic linker!
some notes:
- library search path is hard coded
- x86_64 code is untested and may not work
- dlopen/dlsym is not yet implemented
- relocations in read-only memory won't work
Diffstat (limited to 'arch/x86_64')
-rw-r--r-- | arch/x86_64/reloc.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/x86_64/reloc.h b/arch/x86_64/reloc.h new file mode 100644 index 00000000..2db6115d --- /dev/null +++ b/arch/x86_64/reloc.h @@ -0,0 +1,28 @@ +#include <stdint.h> +#include <string.h> +#include <elf.h> + +#define IS_COPY(x) ((x)==R_X86_64_COPY) + +static inline void do_single_reloc(size_t *reloc_addr, int type, size_t sym_val, size_t sym_size, unsigned char *base_addr, size_t addend) +{ + switch(type) { + case R_X86_64_GLOB_DAT: + case R_X86_64_JUMP_SLOT: + case R_X86_64_64: + *reloc_addr = sym_val + addend; + break; + case R_X86_64_32: + *(uint32_t *)reloc_addr = sym_val + addend; + break; + case R_X86_64_PC32: + *reloc_addr = sym_val + addend - (size_t)reloc_addr + (size_t)base_addr; + break; + case R_X86_64_RELATIVE: + *reloc_addr = (size_t)base_addr + addend; + break; + case R_X86_64_COPY: + memcpy(reloc_addr, (void *)sym_val, sym_size); + break; + } +} |