diff options
Diffstat (limited to 'x86_64-link.c')
| -rw-r--r-- | x86_64-link.c | 73 |
1 files changed, 59 insertions, 14 deletions
diff --git a/x86_64-link.c b/x86_64-link.c index 6cbb4a1..92404e4 100644 --- a/x86_64-link.c +++ b/x86_64-link.c @@ -21,21 +21,66 @@ #include "tcc.h" +/* Returns 1 for a code relocation, 0 for a data relocation. For unknown + relocations, returns -1. */ +int code_reloc (int reloc_type) +{ + switch (reloc_type) { + case R_X86_64_32: + case R_X86_64_32S: + case R_X86_64_64: + case R_X86_64_GOTPCREL: + case R_X86_64_GOTPCRELX: + case R_X86_64_REX_GOTPCRELX: + case R_X86_64_GOTTPOFF: + case R_X86_64_GOT32: + case R_X86_64_GLOB_DAT: + case R_X86_64_COPY: + return 0; + + case R_X86_64_PC32: + case R_X86_64_PLT32: + case R_X86_64_JUMP_SLOT: + return 1; + } + + tcc_error ("Unknown relocation type: %d", reloc_type); + return -1; +} + +/* Returns an enumerator to describe wether and when the relocation needs a + GOT and/or PLT entry to be created. See tcc.h for a description of the + different values. */ +int gotplt_entry_type (int reloc_type) +{ + switch (reloc_type) { + case R_X86_64_GLOB_DAT: + case R_X86_64_JUMP_SLOT: + case R_X86_64_COPY: + return NO_GOTPLT_ENTRY; + + case R_X86_64_32: + case R_X86_64_32S: + case R_X86_64_64: + case R_X86_64_PC32: + return AUTO_GOTPLT_ENTRY; + + case R_X86_64_GOTTPOFF: + return BUILD_GOT_ONLY; + + case R_X86_64_GOT32: + case R_X86_64_GOTPCREL: + case R_X86_64_GOTPCRELX: + case R_X86_64_REX_GOTPCRELX: + case R_X86_64_PLT32: + return ALWAYS_GOTPLT_ENTRY; + } + + tcc_error ("Unknown relocation type: %d", reloc_type); + return -1; +} + static ElfW_Rel *qrel; /* ptr to next reloc entry reused */ -ST_DATA struct reloc_info relocs_info[R_NUM] = { - INIT_RELOC_INFO (R_X86_64_64, 0, AUTO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_32, 0, AUTO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_32S, 0, AUTO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_PC32, 1, AUTO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_PLT32, 1, ALWAYS_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_GLOB_DAT, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_JUMP_SLOT, 1, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_GOTPCREL, 0, ALWAYS_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_GOTPCRELX, 0, ALWAYS_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_REX_GOTPCRELX, 0, ALWAYS_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_X86_64_GOTTPOFF, 0, BUILD_GOT_ONLY) - INIT_RELOC_INFO (R_X86_64_GOT32, 0, ALWAYS_GOTPLT_ENTRY) -}; void relocate_init(Section *sr) { |