920 lines
22 KiB
C
920 lines
22 KiB
C
/* ctfdump.c: CTF dumper.
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*
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* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <malloc.h>
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#include <string.h>
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#include <limits.h>
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#include <libgen.h>
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#include <zlib.h>
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#include <gelf.h>
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#include "libctf.h"
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#include "ctf.h"
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#include "dutil.h"
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#include "dwarves.h"
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/*
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* FIXME: We should just get the table from the CTF ELF section
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* and use it directly
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*/
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extern struct strings *strings;
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static void *zalloc(const size_t size)
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{
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void *s = malloc(size);
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if (s != NULL)
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memset(s, 0, size);
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return s;
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}
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static void *tag__alloc(const size_t size)
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{
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struct tag *self = zalloc(size);
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if (self != NULL)
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self->top_level = 1;
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return self;
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}
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static void oom(const char *msg)
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{
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fprintf(stderr, "libclasses: out of memory(%s)\n", msg);
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exit(EXIT_FAILURE);
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}
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struct ctf_state {
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struct ctf *ctf;
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Elf *elf;
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Elf_Data *elf_syms;
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Elf_Data *elf_symstrs;
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struct cu *cu;
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int elf_num_syms;
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int in_fd;
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};
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static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
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GElf_Shdr *shp, const char *name)
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{
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Elf_Scn *sec = NULL;
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while ((sec = elf_nextscn(elf, sec)) != NULL) {
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char *str;
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gelf_getshdr(sec, shp);
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str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name);
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if (!strcmp(name, str))
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break;
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}
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return sec;
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}
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struct elf_sym_iter_state {
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int (*func)(struct ctf_state *sp, const char *sym_name,
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int sym_index, int call_index, void *data);
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void *data;
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int st_type;
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int limit;
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};
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#if 0
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static int ctf_ignores_elf_symbol(GElf_Sym *sym, char *name, int type)
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{
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if (type == STT_OBJECT &&
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sym->st_shndx == SHN_ABS &&
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sym->st_value == 0)
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return 1;
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if (sym->st_name == 0)
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return 1;
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if (sym->st_shndx == SHN_UNDEF)
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return 1;
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if (!strcmp(name, "_START_") || !strcmp(name, "_END_"))
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return 1;
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return 0;
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}
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static void elf_symbol_iterate(struct ctf_state *sp,
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struct elf_sym_iter_state *ep)
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{
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int i, index;
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index = 0;
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for (i = 0; i < sp->elf_num_syms; i++) {
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GElf_Sym sym;
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char *name;
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int type;
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if (gelf_getsym(sp->elf_syms, i, &sym) == NULL) {
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fprintf(stderr, "Could not get ELF symbol %d.\n", i);
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exit(2);
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}
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type = GELF_ST_TYPE(sym.st_info);
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name = (char *)sp->elf_symstrs->d_buf + sym.st_name;
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if ((ep->st_type == -1 || ep->st_type == type) &&
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!ctf_ignores_elf_symbol(&sym, name, type)) {
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if (index >= ep->limit) {
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fprintf(stderr, "Symbol limit reached "
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"([%u], %d vs %d).\n",
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ep->limit, i, sp->elf_num_syms);
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exit(2);
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}
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if (ep->func(sp, name, i, index++, ep->data) < 0)
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return;
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}
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}
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}
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#endif
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static int parse_elf(struct ctf_state *sp, int *wordsizep)
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{
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GElf_Ehdr ehdr;
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GElf_Shdr shdr;
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Elf_Data *data;
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Elf_Scn *sec;
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if (gelf_getehdr(sp->elf, &ehdr) == NULL) {
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fprintf(stderr, "Cannot get elf header.\n");
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exit(2);
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}
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sec = elf_section_by_name(sp->elf, &ehdr, &shdr, ".SUNW_ctf");
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if (!sec)
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return -1;
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data = elf_getdata(sec, NULL);
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if (!data) {
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fprintf(stderr, "Cannot get data of CTF section.\n");
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return -1;
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}
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sp->ctf = ctf__new(data->d_buf, data->d_size);
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if (!sp->ctf) {
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fprintf(stderr, "Cannot initialize CTF state.\n");
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return -1;
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}
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if (shdr.sh_link != 0)
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sec = elf_getscn(sp->elf, shdr.sh_link);
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else
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sec = elf_section_by_name(sp->elf, &ehdr, &shdr, ".symtab");
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switch (ehdr.e_ident[EI_CLASS]) {
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case ELFCLASS32: *wordsizep = 4; break;
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case ELFCLASS64: *wordsizep = 8; break;
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default: *wordsizep = 0; break;
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}
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if (!sec)
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return 0;
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if (gelf_getshdr(sec, &shdr) != NULL) {
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sp->elf_syms = elf_getdata(sec, NULL);
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sp->elf_num_syms = shdr.sh_size / shdr.sh_entsize;
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sec = elf_getscn(sp->elf, shdr.sh_link);
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sp->elf_symstrs = elf_getdata(sec, NULL);
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}
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return 0;
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}
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static char *ctf_string(uint32_t ref, struct ctf_state *sp)
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{
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struct ctf_header *hp = ctf__get_buffer(sp->ctf);
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uint32_t off = CTF_REF_OFFSET(ref);
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char *name;
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if (CTF_REF_TBL_ID(ref) != CTF_STR_TBL_ID_0)
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return "(external ref)";
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if (off >= ctf__get32(sp->ctf, &hp->ctf_str_len))
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return "(ref out-of-bounds)";
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if ((off + ctf__get32(sp->ctf, &hp->ctf_str_off)) >=
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ctf__get_size(sp->ctf))
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return "(string table truncated)";
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name = ((char *)(hp + 1) + ctf__get32(sp->ctf, &hp->ctf_str_off) + off);
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if (name[0] == '\0')
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return "(anonymous)";
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return name;
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}
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static char *ctf_format_flt_attrs(uint32_t eval, char *buf)
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{
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uint32_t attrs = CTF_TYPE_FP_ATTRS(eval);
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buf[0] = '\0';
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if (attrs < CTF_TYPE_FP_SINGLE ||
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attrs > CTF_TYPE_FP_MAX)
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buf += sprintf(buf, "0x%02x ", attrs);
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else {
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switch (attrs) {
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case CTF_TYPE_FP_SINGLE:
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buf += sprintf(buf, "single ");
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break;
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case CTF_TYPE_FP_DOUBLE:
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buf += sprintf(buf, "double ");
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break;
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case CTF_TYPE_FP_CMPLX:
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buf += sprintf(buf, "complex ");
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break;
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case CTF_TYPE_FP_CMPLX_DBL:
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buf += sprintf(buf, "complex double ");
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break;
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case CTF_TYPE_FP_CMPLX_LDBL:
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buf += sprintf(buf, "complex long double ");
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break;
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case CTF_TYPE_FP_LDBL:
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buf += sprintf(buf, "long double ");
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break;
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case CTF_TYPE_FP_INTVL:
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buf += sprintf(buf, "interval ");
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break;
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case CTF_TYPE_FP_INTVL_DBL:
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buf += sprintf(buf, "interval double ");
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break;
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case CTF_TYPE_FP_INTVL_LDBL:
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buf += sprintf(buf, "interval long double ");
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break;
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case CTF_TYPE_FP_IMGRY:
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buf += sprintf(buf, "imaginary ");
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break;
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case CTF_TYPE_FP_IMGRY_DBL:
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buf += sprintf(buf, "imaginary double ");
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break;
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case CTF_TYPE_FP_IMGRY_LDBL:
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buf += sprintf(buf, "imaginary long double ");
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break;
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}
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}
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return buf;
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}
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#if 0
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static int dump_one_func(struct ctf_state *sp, const char *sym_name,
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int sym_index, int call_index, void *data)
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{
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uint16_t **func_pp = data;
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uint16_t val = ctf__get16(sp->ctf, *func_pp);
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uint16_t type = CTF_GET_KIND(val);
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uint16_t vlen = CTF_GET_VLEN(val);
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uint16_t i;
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(*func_pp)++;
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if (type == CTF_TYPE_KIND_UNKN && vlen == 0)
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return 0;
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if (type != CTF_TYPE_KIND_FUNC) {
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fprintf(stderr, "Expected function type, got %u\n", type);
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exit(2);
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}
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fprintf(stdout, " [%6d] %-36s %8d\n",
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call_index, sym_name, sym_index);
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fprintf(stdout, " 0x%04x (",
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ctf__get16(sp->ctf, *func_pp));
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(*func_pp)++;
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for (i = 0; i < vlen; i++) {
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if (i >= 1)
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fprintf(stdout, ", ");
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fprintf(stdout, "0x%04x", ctf__get16(sp->ctf, *func_pp));
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(*func_pp)++;
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}
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fprintf(stdout, ")\n");
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return 0;
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}
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static void dump_funcs(struct ctf_state *sp)
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{
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struct ctf_header *hp = ctf__get_buffer(sp->ctf);
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struct elf_sym_iter_state estate;
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uint16_t *func_ptr;
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fprintf(stdout, "CTF Functions:\n");
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fprintf(stdout,
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" [ Nr ] "
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"SymName "
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"SymIndex\n"
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" Returns "
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"Args\n");
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memset(&estate, 0, sizeof(estate));
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func_ptr = ctf__get_buffer(sp->ctf) + sizeof(*hp) +
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ctf__get32(sp->ctf, &hp->ctf_func_off);
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estate.data = &func_ptr;
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estate.func = dump_one_func;
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estate.st_type = STT_FUNC;
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estate.limit = INT_MAX;
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elf_symbol_iterate(sp, &estate);
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fprintf(stdout, "\n");
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}
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#endif
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static struct base_type *base_type__new(const char *name, size_t size)
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{
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struct base_type *self = tag__alloc(sizeof(*self));
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if (self != NULL) {
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self->name = strings__add(strings, name);
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self->bit_size = size;
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}
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return self;
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}
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static void type__init(struct type *self, uint16_t tag,
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const char *name, size_t size)
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{
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INIT_LIST_HEAD(&self->node);
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INIT_LIST_HEAD(&self->namespace.tags);
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self->size = size;
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self->namespace.tag.tag = tag;
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self->namespace.name = strings__add(strings, name[0] == '(' ? NULL : name);
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}
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static struct type *type__new(uint16_t tag, const char *name, size_t size)
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{
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struct type *self = tag__alloc(sizeof(*self));
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if (self != NULL)
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type__init(self, tag, name, size);
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return self;
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}
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static struct class *class__new(const char *name, size_t size)
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{
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struct class *self = tag__alloc(sizeof(*self));
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if (self != NULL) {
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type__init(&self->type, DW_TAG_structure_type, name, size);
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INIT_LIST_HEAD(&self->vtable);
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}
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return self;
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}
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static int create_new_base_type(struct ctf_state *sp, void *ptr,
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int vlen __unused, struct ctf_full_type *tp,
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long id)
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{
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uint32_t *enc = ptr, name_idx;
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char name[64], *buf = name;
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uint32_t eval = ctf__get32(sp->ctf, enc);
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uint32_t attrs = CTF_TYPE_INT_ATTRS(eval);
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struct base_type *base;
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if (attrs & CTF_TYPE_INT_SIGNED)
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buf += sprintf(buf, "signed ");
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if (attrs & CTF_TYPE_INT_BOOL)
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buf += sprintf(buf, "bool ");
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if (attrs & CTF_TYPE_INT_VARARGS)
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buf += sprintf(buf, "varargs ");
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name_idx = ctf__get32(sp->ctf, &tp->base.ctf_name);
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buf += sprintf(buf, "%s", ctf_string(name_idx, sp));
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base = base_type__new(name, CTF_TYPE_INT_BITS(eval));
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if (base == NULL)
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oom("base_type__new");
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base->tag.tag = DW_TAG_base_type;
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cu__add_tag(sp->cu, &base->tag, &id);
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return sizeof(*enc);
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}
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static int create_new_base_type_float(struct ctf_state *sp, void *ptr,
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int vlen __unused,
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struct ctf_full_type *tp,
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long id)
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{
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uint32_t *enc = ptr, eval;
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char name[64];
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struct base_type *base;
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eval = ctf__get32(sp->ctf, enc);
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sprintf(ctf_format_flt_attrs(eval, name), "%s",
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ctf_string(ctf__get32(sp->ctf, &tp->base.ctf_name), sp));
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base = base_type__new(name, CTF_TYPE_FP_BITS(eval));
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if (base == NULL)
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oom("base_type__new");
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base->tag.tag = DW_TAG_base_type;
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cu__add_tag(sp->cu, &base->tag, &id);
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return sizeof(*enc);
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}
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static int create_new_array(struct ctf_state *sp, void *ptr,
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int vlen __unused,
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struct ctf_full_type *tp __unused,
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long id)
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{
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struct ctf_array *ap = ptr;
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struct array_type *self = tag__alloc(sizeof(*self));
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if (self == NULL)
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oom("array_type");
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/* FIXME: where to get the number of dimensions?
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* it it flattened? */
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self->dimensions = 1;
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self->nr_entries = malloc(sizeof(uint32_t));
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if (self->nr_entries == NULL)
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oom("array_type->nr_entries");
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self->nr_entries[0] = ctf__get32(sp->ctf, &ap->ctf_array_nelems);
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self->tag.tag = DW_TAG_array_type;
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self->tag.type = ctf__get16(sp->ctf, &ap->ctf_array_type);
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cu__add_tag(sp->cu, &self->tag, &id);
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return sizeof(*ap);
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}
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static int create_new_subroutine_type(struct ctf_state *sp, void *ptr,
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int vlen, struct ctf_full_type *tp,
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long id)
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{
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uint16_t *args = ptr;
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uint16_t i;
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const char *name = ctf_string(ctf__get32(sp->ctf, &tp->base.ctf_name), sp);
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unsigned int type = ctf__get16(sp->ctf, &tp->base.ctf_type);
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struct function *self = tag__alloc(sizeof(*self));
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if (self == NULL)
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oom("function__new");
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self->name = strings__add(strings, name);
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INIT_LIST_HEAD(&self->vtable_node);
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INIT_LIST_HEAD(&self->tool_node);
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INIT_LIST_HEAD(&self->proto.parms);
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self->proto.tag.tag = DW_TAG_subroutine_type;
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self->proto.tag.type = type;
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INIT_LIST_HEAD(&self->lexblock.tags);
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for (i = 0; i < vlen; i++) {
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struct parameter *p = tag__alloc(sizeof(*p));
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p->tag.tag = DW_TAG_formal_parameter;
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p->tag.type = ctf__get16(sp->ctf, &args[i]);
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ftype__add_parameter(&self->proto, p);
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}
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vlen *= sizeof(*args);
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/* Round up to next multiple of 4 to maintain
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* 32-bit alignment.
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*/
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if (vlen & 0x2)
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vlen += 0x2;
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cu__add_tag(sp->cu, &self->proto.tag, &id);
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return vlen;
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}
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static unsigned long create_full_members(struct ctf_state *sp, void *ptr,
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int vlen, struct type *class)
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{
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struct ctf_full_member *mp = ptr;
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int i;
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for (i = 0; i < vlen; i++) {
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struct class_member *member = zalloc(sizeof(*member));
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uint32_t bit_offset;
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if (member == NULL)
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oom("class_member");
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member->tag.tag = DW_TAG_member;
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member->tag.type = ctf__get16(sp->ctf, &mp[i].ctf_member_type);
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member->name = strings__add(strings, ctf_string(ctf__get32(sp->ctf, &mp[i].ctf_member_name), sp));
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bit_offset = (ctf__get32(sp->ctf, &mp[i].ctf_member_offset_high) << 16) |
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ctf__get32(sp->ctf, &mp[i].ctf_member_offset_low);
|
|
member->offset = bit_offset / 8;
|
|
member->bit_offset = bit_offset % 8;
|
|
type__add_member(class, member);
|
|
}
|
|
|
|
return sizeof(*mp);
|
|
}
|
|
|
|
static unsigned long create_short_members(struct ctf_state *sp, void *ptr,
|
|
int vlen, struct type *class)
|
|
{
|
|
struct ctf_short_member *mp = ptr;
|
|
int i;
|
|
|
|
for (i = 0; i < vlen; i++) {
|
|
struct class_member *member = zalloc(sizeof(*member));
|
|
uint32_t bit_offset;
|
|
|
|
if (member == NULL)
|
|
oom("class_member");
|
|
|
|
member->tag.tag = DW_TAG_member;
|
|
member->tag.type = ctf__get16(sp->ctf, &mp[i].ctf_member_type);
|
|
member->name = strings__add(strings, ctf_string(ctf__get32(sp->ctf, &mp[i].ctf_member_name), sp));
|
|
bit_offset = ctf__get16(sp->ctf, &mp[i].ctf_member_offset);
|
|
member->offset = bit_offset / 8;
|
|
member->bit_offset = bit_offset % 8;
|
|
|
|
type__add_member(class, member);
|
|
}
|
|
|
|
return sizeof(*mp);
|
|
}
|
|
|
|
static int create_new_class(struct ctf_state *sp, void *ptr,
|
|
int vlen, struct ctf_full_type *tp,
|
|
uint64_t size, long id)
|
|
{
|
|
unsigned long member_size;
|
|
const char *name = ctf_string(ctf__get32(sp->ctf, &tp->base.ctf_name), sp);
|
|
struct class *self = class__new(name, size);
|
|
|
|
if (size >= CTF_SHORT_MEMBER_LIMIT) {
|
|
member_size = create_full_members(sp, ptr, vlen, &self->type);
|
|
} else {
|
|
member_size = create_short_members(sp, ptr, vlen, &self->type);
|
|
}
|
|
|
|
cu__add_tag(sp->cu, &self->type.namespace.tag, &id);
|
|
|
|
return (vlen * member_size);
|
|
}
|
|
|
|
static int create_new_union(struct ctf_state *sp, void *ptr,
|
|
int vlen, struct ctf_full_type *tp,
|
|
uint64_t size, long id)
|
|
{
|
|
unsigned long member_size;
|
|
const char *name = ctf_string(ctf__get32(sp->ctf, &tp->base.ctf_name), sp);
|
|
struct type *self = type__new(DW_TAG_union_type, name, size);
|
|
|
|
if (size >= CTF_SHORT_MEMBER_LIMIT) {
|
|
member_size = create_full_members(sp, ptr, vlen, self);
|
|
} else {
|
|
member_size = create_short_members(sp, ptr, vlen, self);
|
|
}
|
|
|
|
cu__add_tag(sp->cu, &self->namespace.tag, &id);
|
|
|
|
return (vlen * member_size);
|
|
}
|
|
|
|
static struct enumerator *enumerator__new(const char *name,
|
|
uint32_t value)
|
|
{
|
|
struct enumerator *self = tag__alloc(sizeof(*self));
|
|
|
|
if (self != NULL) {
|
|
self->name = strings__add(strings, name);
|
|
self->value = value;
|
|
self->tag.tag = DW_TAG_enumerator;
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
static int create_new_enumeration(struct ctf_state *sp, void *ptr,
|
|
int vlen, struct ctf_full_type *tp,
|
|
long id)
|
|
{
|
|
struct ctf_enum *ep = ptr;
|
|
uint16_t i;
|
|
struct type *enumeration = type__new(DW_TAG_enumeration_type,
|
|
ctf_string(ctf__get32(sp->ctf,
|
|
&tp->base.ctf_name), sp),
|
|
sizeof(int)); /* FIXME: is this always the case? */
|
|
|
|
if (enumeration == NULL)
|
|
oom("enumeration");
|
|
|
|
for (i = 0; i < vlen; i++) {
|
|
char *name = ctf_string(ctf__get32(sp->ctf, &ep[i].ctf_enum_name), sp);
|
|
uint32_t value = ctf__get32(sp->ctf, &ep[i].ctf_enum_val);
|
|
struct enumerator *enumerator = enumerator__new(name, value);
|
|
|
|
if (enumerator == NULL)
|
|
oom("enumerator__new");
|
|
|
|
enumeration__add(enumeration, enumerator);
|
|
}
|
|
|
|
cu__add_tag(sp->cu, &enumeration->namespace.tag, &id);
|
|
|
|
return (vlen * sizeof(*ep));
|
|
}
|
|
|
|
static int create_new_forward_decl(struct ctf_state *sp, void *ptr __unused,
|
|
int vlen __unused, struct ctf_full_type *tp,
|
|
uint64_t size, long id)
|
|
{
|
|
char *name = ctf_string(ctf__get32(sp->ctf, &tp->base.ctf_name), sp);
|
|
struct class *self = class__new(name, size);
|
|
|
|
if (self == NULL)
|
|
oom("class foward decl");
|
|
self->type.declaration = 1;
|
|
cu__add_tag(sp->cu, &self->type.namespace.tag, &id);
|
|
return 0;
|
|
}
|
|
|
|
static int create_new_typedef(struct ctf_state *sp, int type,
|
|
void *ptr __unused, int vlen __unused,
|
|
struct ctf_full_type *tp,
|
|
uint64_t size, long id)
|
|
{
|
|
const char *name = ctf_string(ctf__get32(sp->ctf, &tp->base.ctf_name), sp);
|
|
unsigned int type_id = ctf__get16(sp->ctf, &tp->base.ctf_type);
|
|
unsigned int tag;
|
|
struct type *self;
|
|
|
|
switch (type) {
|
|
case CTF_TYPE_KIND_TYPDEF: tag = DW_TAG_typedef; break;
|
|
default:
|
|
printf("%s: FOO %d\n\n", __func__, type);
|
|
return 0;
|
|
}
|
|
|
|
self = type__new(tag, name, size);
|
|
if (self == NULL)
|
|
oom("type__new");
|
|
self->namespace.tag.type = type_id;
|
|
cu__add_tag(sp->cu, &self->namespace.tag, &id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int create_new_tag(struct ctf_state *sp, int type,
|
|
void *ptr __unused, int vlen __unused,
|
|
struct ctf_full_type *tp, long id)
|
|
{
|
|
unsigned int type_id = ctf__get16(sp->ctf, &tp->base.ctf_type);
|
|
struct tag *self = zalloc(sizeof(*self));
|
|
|
|
if (self == NULL)
|
|
oom("tag__new");
|
|
|
|
switch (type) {
|
|
case CTF_TYPE_KIND_CONST: self->tag = DW_TAG_const_type; break;
|
|
case CTF_TYPE_KIND_PTR: self->tag = DW_TAG_pointer_type; break;
|
|
case CTF_TYPE_KIND_RESTRICT: self->tag = DW_TAG_restrict_type; break;
|
|
case CTF_TYPE_KIND_VOLATILE: self->tag = DW_TAG_volatile_type; break;
|
|
default:
|
|
printf("%s: FOO %d\n\n", __func__, type);
|
|
return 0;
|
|
}
|
|
|
|
self->type = type_id;
|
|
cu__add_tag(sp->cu, self, &id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void load_types(struct ctf_state *sp)
|
|
{
|
|
struct ctf_header *hp = ctf__get_buffer(sp->ctf);
|
|
struct ctf_full_type *type_ptr, *end;
|
|
unsigned int type_index;
|
|
|
|
type_ptr = ctf__get_buffer(sp->ctf) + sizeof(*hp) +
|
|
ctf__get32(sp->ctf, &hp->ctf_type_off);
|
|
end = ctf__get_buffer(sp->ctf) + sizeof(*hp) +
|
|
ctf__get32(sp->ctf, &hp->ctf_str_off);
|
|
|
|
type_index = 0x0001;
|
|
if (hp->ctf_parent_name ||
|
|
hp->ctf_parent_label)
|
|
type_index += 0x8000;
|
|
|
|
while (type_ptr < end) {
|
|
uint16_t val, type, vlen, base_size;
|
|
uint64_t size;
|
|
void *ptr;
|
|
|
|
val = ctf__get16(sp->ctf, &type_ptr->base.ctf_info);
|
|
type = CTF_GET_KIND(val);
|
|
vlen = CTF_GET_VLEN(val);
|
|
|
|
base_size = ctf__get16(sp->ctf, &type_ptr->base.ctf_size);
|
|
ptr = type_ptr;
|
|
if (base_size == 0xffff) {
|
|
size = ctf__get32(sp->ctf, &type_ptr->ctf_size_high);
|
|
size <<= 32;
|
|
size |= ctf__get32(sp->ctf, &type_ptr->ctf_size_low);
|
|
ptr += sizeof(struct ctf_full_type);
|
|
} else {
|
|
size = base_size;
|
|
ptr += sizeof(struct ctf_short_type);
|
|
}
|
|
|
|
if (type == CTF_TYPE_KIND_INT) {
|
|
vlen = create_new_base_type(sp, ptr, vlen, type_ptr, type_index);
|
|
} else if (type == CTF_TYPE_KIND_FLT) {
|
|
vlen = create_new_base_type_float(sp, ptr, vlen, type_ptr, type_index);
|
|
} else if (type == CTF_TYPE_KIND_ARR) {
|
|
vlen = create_new_array(sp, ptr, vlen, type_ptr, type_index);
|
|
} else if (type == CTF_TYPE_KIND_FUNC) {
|
|
vlen = create_new_subroutine_type(sp, ptr, vlen, type_ptr, type_index);
|
|
} else if (type == CTF_TYPE_KIND_STR) {
|
|
vlen = create_new_class(sp, ptr,
|
|
vlen, type_ptr, size, type_index);
|
|
} else if (type == CTF_TYPE_KIND_UNION) {
|
|
vlen = create_new_union(sp, ptr,
|
|
vlen, type_ptr, size, type_index);
|
|
} else if (type == CTF_TYPE_KIND_ENUM) {
|
|
vlen = create_new_enumeration(sp, ptr, vlen, type_ptr, type_index);
|
|
} else if (type == CTF_TYPE_KIND_FWD) {
|
|
vlen = create_new_forward_decl(sp, ptr, vlen, type_ptr, size, type_index);
|
|
} else if (type == CTF_TYPE_KIND_TYPDEF) {
|
|
vlen = create_new_typedef(sp, type, ptr, vlen, type_ptr, size, type_index);
|
|
} else if (type == CTF_TYPE_KIND_VOLATILE ||
|
|
type == CTF_TYPE_KIND_PTR ||
|
|
type == CTF_TYPE_KIND_CONST ||
|
|
type == CTF_TYPE_KIND_RESTRICT) {
|
|
vlen = create_new_tag(sp, type, ptr, vlen, type_ptr, type_index);
|
|
} else if (type == CTF_TYPE_KIND_UNKN) {
|
|
cu__table_nullify_type_entry(sp->cu, type_index);
|
|
printf("CTF: [%#6x] %1d Unknown\n", type_index, CTF_ISROOT(val));
|
|
vlen = 0;
|
|
} else {
|
|
abort();
|
|
}
|
|
|
|
type_ptr = ptr + vlen;
|
|
type_index++;
|
|
}
|
|
}
|
|
|
|
static void dump_ctf(struct ctf_state *sp)
|
|
{
|
|
//dump_funcs(sp);
|
|
load_types(sp);
|
|
}
|
|
|
|
static void open_files(struct ctf_state *sp, const char *in_filename)
|
|
{
|
|
sp->in_fd = -1;
|
|
if (in_filename) {
|
|
sp->in_fd = open(in_filename, O_RDONLY);
|
|
if (sp->in_fd < 0) {
|
|
perror("open");
|
|
exit(2);
|
|
}
|
|
}
|
|
}
|
|
|
|
static size_t base_type__name_to_size(struct base_type *self)
|
|
{
|
|
if (strcmp(base_type__name(self), "unsigned") == 0)
|
|
return 32;
|
|
|
|
/* FIXME */
|
|
return 0;
|
|
}
|
|
|
|
static int class__fixup_ctf_bitfields(struct tag *self, struct cu *cu)
|
|
{
|
|
struct class_member *pos;
|
|
struct type *type_self = tag__type(self);
|
|
uint16_t bit_offset = 0;
|
|
long last_offset = -1;
|
|
|
|
type__for_each_data_member(type_self, pos) {
|
|
struct tag *type = cu__find_type_by_id(cu, pos->tag.type);
|
|
|
|
if (type->tag != DW_TAG_base_type)
|
|
continue;
|
|
|
|
struct base_type *bt = tag__base_type(type);
|
|
size_t bit_size = base_type__name_to_size(bt);
|
|
|
|
if (bit_size == 0 || bt->bit_size == bit_size) {
|
|
bit_offset = 0;
|
|
last_offset = -1;
|
|
continue;
|
|
}
|
|
|
|
if (last_offset == -1)
|
|
last_offset = pos->offset;
|
|
|
|
uint16_t fixed_tag_id;
|
|
|
|
if (cu__find_base_type_by_name_and_size(cu, base_type__name(bt),
|
|
bit_size, &fixed_tag_id) == NULL) {
|
|
fprintf(stderr,
|
|
"%s: BRAIN FART ALERT!: class: %s, member: %s\n",
|
|
__func__, type__name(type_self),
|
|
class_member__name(pos));
|
|
continue;
|
|
}
|
|
|
|
pos->offset = last_offset;
|
|
pos->tag.type = fixed_tag_id;
|
|
pos->bit_size = bt->bit_size;
|
|
pos->bit_offset = bit_offset;
|
|
bit_offset += bt->bit_size;
|
|
if (bit_offset == bit_size) {
|
|
bit_offset = 0;
|
|
last_offset = -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cu__fixup_ctf_bitfields(struct cu *self)
|
|
{
|
|
int err = 0;
|
|
struct tag *pos;
|
|
|
|
list_for_each_entry(pos, &self->tags, node)
|
|
if (tag__is_struct(pos)) {
|
|
err = class__fixup_ctf_bitfields(pos, self);
|
|
if (err)
|
|
break;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int cus__fixup_ctf_bitfields(struct cus *self)
|
|
{
|
|
int err = 0;
|
|
struct cu *pos;
|
|
|
|
list_for_each_entry(pos, &self->cus, node) {
|
|
err = cu__fixup_ctf_bitfields(pos);
|
|
if (err)
|
|
break;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
int ctf__load(struct cus *self, struct conf_load *conf __unused,
|
|
const char *filename)
|
|
{
|
|
struct ctf_state state;
|
|
int wordsize;
|
|
|
|
memset(&state, 0, sizeof(state));
|
|
|
|
open_files(&state, filename);
|
|
|
|
if (elf_version(EV_CURRENT) == EV_NONE) {
|
|
fprintf(stderr, "Cannot set libelf version.\n");
|
|
return -1;
|
|
}
|
|
|
|
state.elf = elf_begin(state.in_fd, ELF_C_READ_MMAP, NULL);
|
|
if (!state.elf) {
|
|
fprintf(stderr, "Cannot read ELF file.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (parse_elf(&state, &wordsize))
|
|
return -1;
|
|
|
|
state.cu = cu__new("FIXME.c", wordsize, NULL, 0);
|
|
if (state.cu == NULL)
|
|
oom("cu__new");
|
|
|
|
cus__add(self, state.cu);
|
|
|
|
dump_ctf(&state);
|
|
|
|
elf_end(state.elf);
|
|
|
|
close(state.in_fd);
|
|
|
|
return cus__fixup_ctf_bitfields(self);
|
|
}
|