return (h->e_ident[EI_DATA] == ELFDATA2MSB) !=
(swaptest.b[0] == 0);
}
-
+
void elf_swap_ehdr(struct elfhdr *h)
{
swab16s(&h->e_type); /* Object file type */
ElfW(Sym) *sym;
char *shstr;
ELF_RELOC *rel;
-
+
fd = open(filename, O_RDONLY);
if (fd < 0)
error("can't open file '%s'", filename);
-
+
/* Read ELF header. */
if (read(fd, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
error("unable to read file header");
/* read all section data */
sdata = malloc(sizeof(void *) * ehdr.e_shnum);
memset(sdata, 0, sizeof(void *) * ehdr.e_shnum);
-
+
for(i = 0;i < ehdr.e_shnum; i++) {
sec = &shdr[i];
if (sec->sh_type != SHT_NOBITS)
symtab = (ElfW(Sym) *)sdata[symtab_sec - shdr];
strtab = (char *)sdata[symtab_sec->sh_link];
-
+
nb_syms = symtab_sec->sh_size / sizeof(ElfW(Sym));
if (do_swap) {
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
{
char *q;
int c, i, len;
-
+
if (ext_sym->e.e.e_zeroes != 0) {
q = sym->st_name;
for(i = 0; i < 8; i++) {
if (sym->st_syment->e_scnum == data_shndx &&
text_data >= sym->st_value &&
text_data < sym->st_value + sym->st_size) {
-
+
return sym->st_name;
}
);
if (fd < 0)
error("can't open file '%s'", filename);
-
+
/* Read COFF header. */
if (read(fd, &fhdr, sizeof (fhdr)) != sizeof (fhdr))
error("unable to read file header");
/* read all section data */
sdata = malloc(sizeof(void *) * fhdr.f_nscns);
memset(sdata, 0, sizeof(void *) * fhdr.f_nscns);
-
+
const char *p;
for(i = 0;i < fhdr.f_nscns; i++) {
sec = &shdr[i];
if (!data_sec)
error("could not find .data section");
coff_data_shndx = data_sec - shdr;
-
+
coff_symtab = load_data(fd, fhdr.f_symptr, fhdr.f_nsyms*SYMESZ);
for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
for(i=0;i<8;i++)
n_strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), STRTAB_SIZE);
strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), *n_strtab);
-
+
nb_syms = fhdr.f_nsyms;
for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
} else {
sym->st_size = 0;
}
-
+
sym->st_type = ext_sym->e_type;
sym->st_shndx = ext_sym->e_scnum;
}
-
+
/* find text relocations, if any */
sec = &shdr[coff_text_shndx];
coff_relocs = load_data(fd, sec->s_relptr, sec->s_nreloc*RELSZ);
if ( sym->n_type & N_STAB ) /* Debug symbols are ignored */
return "debug";
-
+
if(!name)
return name;
if(name[0]=='_')
{
unsigned int tocindex, symindex, size;
const char *name = 0;
-
+
/* Sanity check */
if(!( address >= sec_hdr->addr && address < (sec_hdr->addr + sec_hdr->size) ) )
return (char*)0;
-
+
if( sec_hdr->flags & S_SYMBOL_STUBS ){
size = sec_hdr->reserved2;
if(size == 0)
error("size = 0");
-
+
}
else if( sec_hdr->flags & S_LAZY_SYMBOL_POINTERS ||
sec_hdr->flags & S_NON_LAZY_SYMBOL_POINTERS)
size = sizeof(unsigned long);
else
return 0;
-
+
/* Compute our index in toc */
tocindex = (address - sec_hdr->addr)/size;
symindex = tocdylib[sec_hdr->reserved1 + tocindex];
/* Intruction contains an offset to the symbols pointed to, in the rel->r_symbolnum section */
sectoffset = *(uint32_t *)(text + rel->r_address) & 0xffff;
-
+
if(sectnum==0xffffff)
return 0;
if(rel->r_pcrel)
sectoffset += rel->r_address;
-
+
if (rel->r_type == PPC_RELOC_BR24)
name = (char *)find_reloc_name_in_sec_ptr((int)sectoffset, §ion_hdr[sectnum-1]);
unsigned int i, j;
EXE_SYM *sym;
struct nlist *syment;
-
+
fd = open(filename, O_RDONLY);
if (fd < 0)
error("can't open file '%s'", filename);
-
+
/* Read Mach header. */
if (read(fd, &mach_hdr, sizeof (mach_hdr)) != sizeof (mach_hdr))
error("unable to read file header");
if (!check_mach_header(mach_hdr)) {
error("bad Mach header");
}
-
+
if (mach_hdr.cputype != CPU_TYPE_POWERPC)
error("Unsupported CPU");
-
+
if (mach_hdr.filetype != MH_OBJECT)
error("Unsupported Mach Object");
-
+
/* read segment headers */
for(i=0, j=sizeof(mach_hdr); i<mach_hdr.ncmds ; i++)
{
/* read all section data */
sdata = (uint8_t **)malloc(sizeof(void *) * segment->nsects);
memset(sdata, 0, sizeof(void *) * segment->nsects);
-
+
/* Load the data in section data */
for(i = 0; i < segment->nsects; i++) {
sdata[i] = load_data(fd, section_hdr[i].offset, section_hdr[i].size);
/* Make sure dysym was loaded */
if(!(int)dysymtabcmd)
error("could not find __DYSYMTAB segment");
-
+
/* read the table of content of the indirect sym */
tocdylib = load_data( fd, dysymtabcmd->indirectsymoff, dysymtabcmd->nindirectsyms * sizeof(uint32_t) );
-
+
/* Make sure symtab was loaded */
if(!(int)symtabcmd)
error("could not find __SYMTAB segment");
struct nlist *sym_follow, *sym_next = 0;
unsigned int j;
memset(sym, 0, sizeof(*sym));
-
+
if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */
continue;
-
+
memcpy(sym, syment, sizeof(*syment));
-
+
/* Find the following symbol in order to get the current symbol size */
for(j = 0, sym_follow = symtab_std; j < nb_syms; j++, sym_follow++) {
if ( sym_follow->n_sect != 1 || sym_follow->n_type & N_STAB || !(sym_follow->n_value > sym->st_value))
uint8_t data_allocated[1024];
unsigned int data_index;
int type;
-
+
memset(data_allocated, 0, sizeof(data_allocated));
-
+
p = p_start;
min_offset = p_end - p_start;
spare = 0x7fffffff;
}
copy_size = len;
}
-#endif
+#endif
#elif defined(HOST_PPC)
{
uint8_t *p;
#endif
if (get32((uint32_t *)p) != 0x6bfa8001)
error("ret expected at the end of %s", name);
- copy_size = p - p_start;
+ copy_size = p - p_start;
}
#elif defined(HOST_IA64)
{
} else {
error("No save at the beginning of %s", name);
}
-
+
/* Skip a preceeding nop, if present. */
if (p > p_start) {
skip_insn = get32((uint32_t *)(p - 0x4));
if (skip_insn == 0x01000000)
p -= 4;
}
-
+
copy_size = p - p_start;
}
#elif defined(HOST_ARM)
}
}
}
-
+
nb_args = 0;
while (nb_args < MAX_ARGS && args_present[nb_args])
nb_args++;
if (strstart(sym_name, "__op_label", &p)) {
uint8_t *ptr;
unsigned long offset;
-
+
/* test if the variable refers to a label inside
the code we are generating */
#ifdef CONFIG_FORMAT_COFF
}
}
}
-#endif
+#endif
if (val >= start_offset && val <= start_offset + copy_size) {
n = strtol(p, NULL, 10);
fprintf(outfile, " label_offsets[%d] = %ld + (gen_code_ptr - gen_code_buf);\n", n, (long)(val - start_offset));
n, reloc_offset);
continue;
}
-
+
get_reloc_expr(relname, sizeof(relname), sym_name);
type = ELF32_R_TYPE(rel->r_info);
addend = rel->r_addend;
gen_code(name, sym->st_value, sym->st_size, outfile, 0);
}
}
-
+
} else {
/* generate big code generation switch */
eliminating the neeed to jump around the pool.
We currently generate:
-
+
[ For this example we assume merging would move op1_pool out of range.
In practice we should be able to combine many ops before the offset
limits are reached. ]
projects / mirror_qemu.git / blobdiff