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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