diff options
Diffstat (limited to 'arm64-link.c')
| -rw-r--r-- | arm64-link.c | 76 |
1 files changed, 60 insertions, 16 deletions
diff --git a/arm64-link.c b/arm64-link.c index 76b4ceb..0833746 100644 --- a/arm64-link.c +++ b/arm64-link.c @@ -20,22 +20,66 @@ #include "tcc.h" -ST_DATA struct reloc_info relocs_info[R_NUM] = { - INIT_RELOC_INFO (R_AARCH64_ABS32, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_ABS64, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_MOVW_UABS_G0_NC, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_MOVW_UABS_G1_NC, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_MOVW_UABS_G2_NC, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_MOVW_UABS_G3, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_ADR_PREL_PG_HI21, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_ADD_ABS_LO12_NC, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_JUMP26, 1, AUTO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_CALL26, 1, AUTO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_ADR_GOT_PAGE, 0, ALWAYS_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_LD64_GOT_LO12_NC, 0, ALWAYS_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_GLOB_DAT, 0, NO_GOTPLT_ENTRY) - INIT_RELOC_INFO (R_AARCH64_JUMP_SLOT, 1, NO_GOTPLT_ENTRY) -}; +/* 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_AARCH64_ABS32: + case R_AARCH64_ABS64: + case R_AARCH64_MOVW_UABS_G0_NC: + case R_AARCH64_MOVW_UABS_G1_NC: + case R_AARCH64_MOVW_UABS_G2_NC: + case R_AARCH64_MOVW_UABS_G3: + case R_AARCH64_ADR_PREL_PG_HI21: + case R_AARCH64_ADD_ABS_LO12_NC: + case R_AARCH64_ADR_GOT_PAGE: + case R_AARCH64_LD64_GOT_LO12_NC: + case R_AARCH64_GLOB_DAT: + case R_AARCH64_COPY: + return 0; + + case R_AARCH64_JUMP26: + case R_AARCH64_CALL26: + case R_AARCH64_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_AARCH64_ABS32: + case R_AARCH64_ABS64: + case R_AARCH64_MOVW_UABS_G0_NC: + case R_AARCH64_MOVW_UABS_G1_NC: + case R_AARCH64_MOVW_UABS_G2_NC: + case R_AARCH64_MOVW_UABS_G3: + case R_AARCH64_ADR_PREL_PG_HI21: + case R_AARCH64_ADD_ABS_LO12_NC: + case R_AARCH64_GLOB_DAT: + case R_AARCH64_JUMP_SLOT: + case R_AARCH64_COPY: + return NO_GOTPLT_ENTRY; + + case R_AARCH64_JUMP26: + case R_AARCH64_CALL26: + return AUTO_GOTPLT_ENTRY; + + case R_AARCH64_ADR_GOT_PAGE: + case R_AARCH64_LD64_GOT_LO12_NC: + return ALWAYS_GOTPLT_ENTRY; + } + + tcc_error ("Unknown relocation type: %d", reloc_type); + return -1; +} void relocate_init(Section *sr) {} |