FreeCalypso > hg > freecalypso-reveng
changeset 110:e650fdc743fe
tiobjd: higher-level reloc handling
| author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
|---|---|
| date | Thu, 03 Apr 2014 03:03:41 +0000 |
| parents | e40592990516 |
| children | 0f94d17899b3 |
| files | ticoff/intstruct.h ticoff/main.c ticoff/reloc.c ticoff/tables.c |
| diffstat | 4 files changed, 101 insertions(+), 0 deletions(-) [+] |
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line diff
--- a/ticoff/intstruct.h Mon Mar 31 19:06:33 2014 +0000 +++ b/ticoff/intstruct.h Thu Apr 03 03:03:41 2014 +0000 @@ -14,6 +14,7 @@ unsigned flags; unsigned nsymbols; struct internal_syment **sorted_symbols; + struct internal_reloc *int_relocs; }; struct internal_syment { @@ -25,3 +26,10 @@ u_char *aux; struct internal_scnhdr *section; }; + +struct internal_reloc { + unsigned location; + struct internal_syment *sym; + int type; + char *typestr; +};
--- a/ticoff/main.c Mon Mar 31 19:06:33 2014 +0000 +++ b/ticoff/main.c Thu Apr 03 03:03:41 2014 +0000 @@ -13,6 +13,7 @@ extern int cmd_nm(); extern int cmd_profile(); extern int cmd_rawrel(); +extern int cmd_reloc(); extern int cmd_sechdr(); extern int cmd_symtab(); extern int dump_filehdr_info(); @@ -27,6 +28,7 @@ {"nm", cmd_nm}, {"profile", cmd_profile}, {"rawrel", cmd_rawrel}, + {"reloc", cmd_reloc}, {"sechdr", cmd_sechdr}, {"symtab", cmd_symtab}, {0, 0}
--- 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); +}