FreeCalypso > hg > freecalypso-reveng
diff ticoff/reloc.c @ 110:e650fdc743fe
tiobjd: higher-level reloc handling
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
---|---|
date | Thu, 03 Apr 2014 03:03:41 +0000 |
parents | c20dc315a9d4 |
children | d97fbe98600b |
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--- a/ticoff/reloc.c Mon Mar 31 19:06:33 2014 +0000 +++ b/ticoff/reloc.c Thu Apr 03 03:03:41 2014 +0000 @@ -7,6 +7,7 @@ #include <stdlib.h> #include "filestruct.h" #include "intstruct.h" +#include "coffconst.h" #include "globals.h" extern unsigned get_u16(), get_u32(); @@ -33,3 +34,92 @@ } exit(0); } + +void +get_relocs_of_sec(sec) + struct internal_scnhdr *sec; +{ + unsigned n; + struct external_reloc *extrel; + struct internal_reloc *intrel; + unsigned lastloc, symidx; + + if (sec->int_relocs) + return; + if (!sec->nreloc) { + fprintf(stderr, + "BUG: get_relocs_of_sec() called for section \"%s\" w/o relocs\n", + sec->name); + exit(1); + } + intrel = malloc(sizeof(struct internal_reloc) * sec->nreloc); + if (!intrel) { + perror("malloc"); + exit(1); + } + sec->int_relocs = intrel; + extrel = (struct external_reloc *)(filemap + sec->reloc_offset); + for (n = 0; n < sec->nreloc; n++, extrel++, intrel++) { + intrel->location = get_u32(extrel->r_vaddr); + if (n && intrel->location <= lastloc) { + fprintf(stderr, + "error: non-increasing reloc order in section \"%s\"\n", + sec->name); + exit(1); + } + lastloc = intrel->location; + symidx = get_u32(extrel->r_symndx); + if (symidx >= nsymtab || !symtab[symidx]) { + fprintf(stderr, + "error: reloc references invalid symbol #%u in section \"%s\"\n", + symidx, sec->name); + exit(1); + } + intrel->sym = symtab[symidx]; + intrel->type = get_u16(extrel->r_type); + switch (intrel->type) { + case RTYPE_LONG: + intrel->typestr = "Word32"; + break; + case RTYPE_THUMB_BL: + intrel->typestr = "Thumb_BL"; + break; + case RTYPE_ARM_B: + intrel->typestr = "ARM_B"; + break; + default: + fprintf(stderr, + "error: reloc in section \"%s\" of unexpected type 0x%x\n", + sec->name, intrel->type); + exit(1); + } + if (get_u16(extrel->r_reserved)) + fprintf(stderr, + "warning: reloc in section \"%s\" has non-zero reserved field\n", + sec->name); + } +} + +cmd_reloc() +{ + unsigned n, m; + struct internal_scnhdr *sec; + struct internal_reloc *rel; + + get_int_section_table(); + get_int_symbol_table(); + for (n = 0; n < nsections; n++) { + sec = sections + n; + if (!sec->nreloc) + continue; + printf("%s:\n\n", sec->name); + get_relocs_of_sec(sec); + rel = sec->int_relocs; + printf("Location Type Symbol relative to\n"); + for (m = 0; m < sec->nreloc; m++, rel++) + printf("%08X %-8s %s\n", rel->location, rel->typestr, + rel->sym->name); + putchar('\n'); + } + exit(0); +}