diff options
Diffstat (limited to 'libexec/rtld-elf/debug.c')
-rw-r--r-- | libexec/rtld-elf/debug.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/libexec/rtld-elf/debug.c b/libexec/rtld-elf/debug.c index 0c8ca35..19a4407 100644 --- a/libexec/rtld-elf/debug.c +++ b/libexec/rtld-elf/debug.c @@ -33,6 +33,12 @@ #include <stdio.h> #include "debug.h" +#include "rtld.h" + +static const char rel_header[] = + " symbol name r_info r_offset st_value st_size address value\n" + " ------------------------------------------------------------------------------\n"; +static const char rel_format[] = " %-25s %6x %08x %08x %7d %10p %08x\n"; int debug = 0; @@ -50,3 +56,88 @@ debug_printf(const char *format, ...) va_end(ap); } } + +void +dump_relocations (Obj_Entry *obj0) +{ + Obj_Entry *obj; + + for (obj = obj0; obj != NULL; obj = obj->next) { + dump_obj_relocations(obj); + } +} + +void +dump_obj_relocations (Obj_Entry *obj) +{ + + printf("Object \"%s\", relocbase %p\n", obj->path, obj->relocbase); + + if (obj->relsize) { + printf("Non-PLT Relocations: %ld\n", + (obj->relsize / sizeof(Elf_Rel))); + dump_Elf_Rel(obj, obj->rel, obj->relsize); + } + + if (obj->relasize) { + printf("Non-PLT Relocations with Addend: %ld\n", + (obj->relasize / sizeof(Elf_Rela))); + dump_Elf_Rela(obj, obj->rela, obj->relasize); + } + + if (obj->pltrelsize) { + printf("PLT Relocations: %ld\n", + (obj->pltrelsize / sizeof(Elf_Rel))); + dump_Elf_Rel(obj, obj->pltrel, obj->pltrelsize); + } + + if (obj->pltrelasize) { + printf("PLT Relocations with Addend: %ld\n", + (obj->pltrelasize / sizeof(Elf_Rela))); + dump_Elf_Rela(obj, obj->pltrela, obj->pltrelasize); + } +} + +void +dump_Elf_Rel (Obj_Entry *obj, const Elf_Rel *rel0, u_long relsize) +{ + const Elf_Rel *rel; + const Elf_Rel *rellim; + const Elf_Sym *sym; + Elf_Addr *dstaddr; + + printf("%s", rel_header); + rellim = (const Elf_Rel *)((char *)rel0 + relsize); + for (rel = rel0; rel < rellim; rel++) { + dstaddr = (Elf_Addr *)(obj->relocbase + rel->r_offset); + sym = obj->symtab + ELF_R_SYM(rel->r_info); + printf(rel_format, + obj->strtab + sym->st_name, + rel->r_info, rel->r_offset, + sym->st_value, sym->st_size, + dstaddr, *dstaddr); + } + return; +} + +void +dump_Elf_Rela (Obj_Entry *obj, const Elf_Rela *rela0, u_long relasize) +{ + const Elf_Rela *rela; + const Elf_Rela *relalim; + const Elf_Sym *sym; + Elf_Addr *dstaddr; + + printf("%s", rel_header); + relalim = (const Elf_Rela *)((char *)rela0 + relasize); + for (rela = rela0; rela < relalim; rela++) { + dstaddr = (Elf_Addr *)(obj->relocbase + rela->r_offset); + sym = obj->symtab + ELF_R_SYM(rela->r_info); + printf(rel_format, + obj->strtab + sym->st_name, + rela->r_info, rela->r_offset, + sym->st_value, sym->st_size, + dstaddr, *dstaddr); + } + return; +} |