diff options
| author | Andreas Schwab <[email protected]> | 2018-10-02 14:46:51 +0200 |
|---|---|---|
| committer | Mark Wielaard <[email protected]> | 2018-10-13 22:54:51 +0200 |
| commit | 2876b3b648f665736ac9c879d34de5e3866ba8f9 (patch) | |
| tree | be631dee293e01847e3eea43343b0d249a7532c6 /src/strip.c | |
| parent | 69d6e67eee30c483ba53a8e1da1b3568033e3dde (diff) | |
Handle ADD/SUB relocations
This adds support for ADD and SUB relocations as seen on RISC-V.
Signed-off-by: Andreas Schwab <[email protected]>
Diffstat (limited to 'src/strip.c')
| -rw-r--r-- | src/strip.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/src/strip.c b/src/strip.c index 4a3db1b5..1f7b3cab 100644 --- a/src/strip.c +++ b/src/strip.c @@ -2030,7 +2030,8 @@ handle_elf (int fd, Elf *elf, const char *prefix, const char *fname, return true; /* We only do simple absolute relocations. */ - Elf_Type type = ebl_reloc_simple_type (ebl, rtype); + int addsub = 0; + Elf_Type type = ebl_reloc_simple_type (ebl, rtype, &addsub); if (type == ELF_T_NUM) return false; @@ -2109,6 +2110,17 @@ handle_elf (int fd, Elf *elf, const char *prefix, const char *fname, /* For SHT_RELA sections we just take the given addend and add it to the value. */ value += addend; + /* For ADD/SUB relocations we need to fetch the + current section contents. */ + if (addsub != 0) + { + Elf_Data *d = gelf_xlatetom (debugelf, &tmpdata, + &rdata, + ehdr->e_ident[EI_DATA]); + if (d == NULL) + INTERNAL_ERROR (fname); + assert (d == &tmpdata); + } } else { @@ -2125,9 +2137,12 @@ handle_elf (int fd, Elf *elf, const char *prefix, const char *fname, switch (type) { -#define DO_TYPE(NAME, Name) \ - case ELF_T_##NAME: \ - tmpbuf.Name += (GElf_##Name) value; \ +#define DO_TYPE(NAME, Name) \ + case ELF_T_##NAME: \ + if (addsub < 0) \ + tmpbuf.Name -= (GElf_##Name) value; \ + else \ + tmpbuf.Name += (GElf_##Name) value; \ break; TYPES; #undef DO_TYPE |