diff options
Diffstat (limited to 'backends/s390_symbol.c')
| -rw-r--r-- | backends/s390_symbol.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/backends/s390_symbol.c b/backends/s390_symbol.c index f91e1373..9e80ecaa 100644 --- a/backends/s390_symbol.c +++ b/backends/s390_symbol.c @@ -32,6 +32,7 @@ #include <elf.h> #include <stddef.h> +#include <string.h> #define BACKEND s390_ #include "libebl_CPU.h" @@ -55,3 +56,40 @@ s390_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type, return ELF_T_NUM; } } + +/* The _GLOBAL_OFFSET_TABLE_ symbol might point to the DT_PLTGOT, + which is in the .got section, even if the symbol itself is + associated with the is a .got.plt section. + https://sourceware.org/ml/binutils/2018-07/msg00200.html */ +bool +s390_check_special_symbol (Elf *elf, const GElf_Sym *sym, + const char *name, const GElf_Shdr *destshdr) +{ + if (name != NULL + && strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) + { + size_t shstrndx; + if (elf_getshdrstrndx (elf, &shstrndx) != 0) + return false; + const char *sname = elf_strptr (elf, shstrndx, destshdr->sh_name); + if (sname != NULL + && (strcmp (sname, ".got") == 0 || strcmp (sname, ".got.plt") == 0)) + { + Elf_Scn *scn = NULL; + while ((scn = elf_nextscn (elf, scn)) != NULL) + { + GElf_Shdr shdr_mem; + GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem); + if (shdr != NULL) + { + sname = elf_strptr (elf, shstrndx, shdr->sh_name); + if (sname != NULL && strcmp (sname, ".got") == 0) + return (sym->st_value >= shdr->sh_addr + && sym->st_value < shdr->sh_addr + shdr->sh_size); + } + } + } + } + + return false; +} |