Date: Wed, 3 May 2017 01:06:56 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r317714 - stable/11/contrib/elftoolchain/readelf Message-ID: <201705030106.v4316u18067492@repo.freebsd.org>
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Author: emaste Date: Wed May 3 01:06:56 2017 New Revision: 317714 URL: https://svnweb.freebsd.org/changeset/base/317714 Log: MFC r317141: readelf: dump MIPS abiflags section This is not fully fleshed out but is sufficient to dump the SHT_MIPS_ABIFLAGS used in FreeBSD. Sponsored by: The FreeBSD Foundation Modified: stable/11/contrib/elftoolchain/readelf/readelf.c Directory Properties: stable/11/ (props changed) Modified: stable/11/contrib/elftoolchain/readelf/readelf.c ============================================================================== --- stable/11/contrib/elftoolchain/readelf/readelf.c Tue May 2 23:31:39 2017 (r317713) +++ stable/11/contrib/elftoolchain/readelf/readelf.c Wed May 3 01:06:56 2017 (r317714) @@ -296,6 +296,7 @@ static void dump_elf(struct readelf *re) static void dump_dyn_val(struct readelf *re, GElf_Dyn *dyn, uint32_t stab); static void dump_dynamic(struct readelf *re); static void dump_liblist(struct readelf *re); +static void dump_mips_abiflags(struct readelf *re, struct section *s); static void dump_mips_attributes(struct readelf *re, uint8_t *p, uint8_t *pe); static void dump_mips_odk_reginfo(struct readelf *re, uint8_t *p, size_t sz); static void dump_mips_options(struct readelf *re, struct section *s); @@ -325,6 +326,7 @@ static const char *dwarf_regname(struct static struct dumpop *find_dumpop(struct readelf *re, size_t si, const char *sn, int op, int t); static int get_ent_count(struct section *s, int *ent_count); +static int get_mips_register_size(uint8_t flag); static char *get_regoff_str(struct readelf *re, Dwarf_Half reg, Dwarf_Addr off); static const char *get_string(struct readelf *re, int strtab, size_t off); @@ -4105,6 +4107,10 @@ dump_mips_specific_info(struct readelf * } } + if (s->name != NULL && (!strcmp(s->name, ".MIPS.abiflags") || + (s->type == SHT_MIPS_ABIFLAGS))) + dump_mips_abiflags(re, s); + /* * Dump .reginfo if present (although it will be ignored by an OS if a * .MIPS.options section is present, according to SGI mips64 spec). @@ -4118,6 +4124,82 @@ dump_mips_specific_info(struct readelf * } static void +dump_mips_abiflags(struct readelf *re, struct section *s) +{ + Elf_Data *d; + uint8_t *p; + int elferr; + uint32_t isa_ext, ases, flags1, flags2; + uint16_t version; + uint8_t isa_level, isa_rev, gpr_size, cpr1_size, cpr2_size, fp_abi; + + if ((d = elf_rawdata(s->scn, NULL)) == NULL) { + elferr = elf_errno(); + if (elferr != 0) + warnx("elf_rawdata failed: %s", + elf_errmsg(elferr)); + return; + } + if (d->d_size != 24) { + warnx("invalid MIPS abiflags section size"); + return; + } + + p = d->d_buf; + version = re->dw_decode(&p, 2); + printf("MIPS ABI Flags Version: %u", version); + if (version != 0) { + printf(" (unknown)\n\n"); + return; + } + printf("\n\n"); + + isa_level = re->dw_decode(&p, 1); + isa_rev = re->dw_decode(&p, 1); + gpr_size = re->dw_decode(&p, 1); + cpr1_size = re->dw_decode(&p, 1); + cpr2_size = re->dw_decode(&p, 1); + fp_abi = re->dw_decode(&p, 1); + isa_ext = re->dw_decode(&p, 4); + ases = re->dw_decode(&p, 4); + flags1 = re->dw_decode(&p, 4); + flags2 = re->dw_decode(&p, 4); + + printf("ISA: "); + if (isa_rev <= 1) + printf("MIPS%u\n", isa_level); + else + printf("MIPS%ur%u\n", isa_level, isa_rev); + printf("GPR size: %d\n", get_mips_register_size(gpr_size)); + printf("CPR1 size: %d\n", get_mips_register_size(cpr1_size)); + printf("CPR2 size: %d\n", get_mips_register_size(cpr2_size)); + printf("FP ABI: "); + switch (fp_abi) { + case 3: + printf("Soft float"); + break; + default: + printf("%u", fp_abi); + break; + } + printf("\nISA Extension: %u\n", isa_ext); + printf("ASEs: %u\n", ases); + printf("FLAGS 1: %08x\n", flags1); + printf("FLAGS 2: %08x\n", flags2); +} + +static int +get_mips_register_size(uint8_t flag) +{ + switch (flag) { + case 0: return 0; + case 1: return 32; + case 2: return 64; + case 3: return 128; + default: return -1; + } +} +static void dump_mips_reginfo(struct readelf *re, struct section *s) { Elf_Data *d;
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