1 files changed, 680 insertions, 0 deletions

diff --git a/arch/mips/boot/tools/relocs.c b/arch/mips/boot/tools/relocs.c
new file mode 100644
index 000000000000..b9cbf78527e8
--- /dev/null
+++ b/arch/mips/boot/tools/relocs.c
@@ -0,0 +1,680 @@
+/* This is included from relocs_32/64.c */
+
+#define ElfW(type)		_ElfW(ELF_BITS, type)
+#define _ElfW(bits, type)	__ElfW(bits, type)
+#define __ElfW(bits, type)	Elf##bits##_##type
+
+#define Elf_Addr		ElfW(Addr)
+#define Elf_Ehdr		ElfW(Ehdr)
+#define Elf_Phdr		ElfW(Phdr)
+#define Elf_Shdr		ElfW(Shdr)
+#define Elf_Sym			ElfW(Sym)
+
+static Elf_Ehdr ehdr;
+
+struct relocs {
+	uint32_t	*offset;
+	unsigned long	count;
+	unsigned long	size;
+};
+
+static struct relocs relocs;
+
+struct section {
+	Elf_Shdr       shdr;
+	struct section *link;
+	Elf_Sym        *symtab;
+	Elf_Rel        *reltab;
+	char           *strtab;
+	long           shdr_offset;
+};
+static struct section *secs;
+
+static const char * const regex_sym_kernel = {
+/* Symbols matching these regex's should never be relocated */
+	"^(__crc_)",
+};
+
+static regex_t sym_regex_c;
+
+static int regex_skip_reloc(const char *sym_name)
+{
+	return !regexec(&sym_regex_c, sym_name, 0, NULL, 0);
+}
+
+static void regex_init(void)
+{
+	char errbuf[128];
+	int err;
+
+	err = regcomp(&sym_regex_c, regex_sym_kernel,
+			REG_EXTENDED|REG_NOSUB);
+
+	if (err) {
+		regerror(err, &sym_regex_c, errbuf, sizeof(errbuf));
+		die("%s", errbuf);
+	}
+}
+
+static const char *rel_type(unsigned type)
+{
+	static const char * const type_name[] = {
+#define REL_TYPE(X)[X] = #X
+		REL_TYPE(R_MIPS_NONE),
+		REL_TYPE(R_MIPS_16),
+		REL_TYPE(R_MIPS_32),
+		REL_TYPE(R_MIPS_REL32),
+		REL_TYPE(R_MIPS_26),
+		REL_TYPE(R_MIPS_HI16),
+		REL_TYPE(R_MIPS_LO16),
+		REL_TYPE(R_MIPS_GPREL16),
+		REL_TYPE(R_MIPS_LITERAL),
+		REL_TYPE(R_MIPS_GOT16),
+		REL_TYPE(R_MIPS_PC16),
+		REL_TYPE(R_MIPS_CALL16),
+		REL_TYPE(R_MIPS_GPREL32),
+		REL_TYPE(R_MIPS_64),
+		REL_TYPE(R_MIPS_HIGHER),
+		REL_TYPE(R_MIPS_HIGHEST),
+		REL_TYPE(R_MIPS_PC21_S2),
+		REL_TYPE(R_MIPS_PC26_S2),
+#undef REL_TYPE
+	};
+	const char *name = "unknown type rel type name";
+
+	if (type < ARRAY_SIZE(type_name) && type_name[type])
+		name = type_name[type];
+	return name;
+}
+
+static const char *sec_name(unsigned shndx)
+{
+	const char *sec_strtab;
+	const char *name;
+
+	sec_strtab = secs[ehdr.e_shstrndx].strtab;
+	if (shndx < ehdr.e_shnum)
+		name = sec_strtab + secs[shndx].shdr.sh_name;
+	else if (shndx == SHN_ABS)
+		name = "ABSOLUTE";
+	else if (shndx == SHN_COMMON)
+		name = "COMMON";
+	else
+		name = "<noname>";
+	return name;
+}
+
+static struct section *sec_lookup(const char *secname)
+{
+	int i;
+
+	for (i = 0; i < ehdr.e_shnum; i++)
+		if (strcmp(secname, sec_name(i)) == 0)
+			return &secs[i];
+
+	return NULL;
+}
+
+static const char *sym_name(const char *sym_strtab, Elf_Sym *sym)
+{
+	const char *name;
+
+	if (sym->st_name)
+		name = sym_strtab + sym->st_name;
+	else
+		name = sec_name(sym->st_shndx);
+	return name;
+}
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define le16_to_cpu(val) (val)
+#define le32_to_cpu(val) (val)
+#define le64_to_cpu(val) (val)
+#define be16_to_cpu(val) bswap_16(val)
+#define be32_to_cpu(val) bswap_32(val)
+#define be64_to_cpu(val) bswap_64(val)
+
+#define cpu_to_le16(val) (val)
+#define cpu_to_le32(val) (val)
+#define cpu_to_le64(val) (val)
+#define cpu_to_be16(val) bswap_16(val)
+#define cpu_to_be32(val) bswap_32(val)
+#define cpu_to_be64(val) bswap_64(val)
+#endif
+#if BYTE_ORDER == BIG_ENDIAN
+#define le16_to_cpu(val) bswap_16(val)
+#define le32_to_cpu(val) bswap_32(val)
+#define le64_to_cpu(val) bswap_64(val)
+#define be16_to_cpu(val) (val)
+#define be32_to_cpu(val) (val)
+#define be64_to_cpu(val) (val)
+
+#define cpu_to_le16(val) bswap_16(val)
+#define cpu_to_le32(val) bswap_32(val)
+#define cpu_to_le64(val) bswap_64(val)
+#define cpu_to_be16(val) (val)
+#define cpu_to_be32(val) (val)
+#define cpu_to_be64(val) (val)
+#endif
+
+static uint16_t elf16_to_cpu(uint16_t val)
+{
+	if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB)
+		return le16_to_cpu(val);
+	else
+		return be16_to_cpu(val);
+}
+
+static uint32_t elf32_to_cpu(uint32_t val)
+{
+	if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB)
+		return le32_to_cpu(val);
+	else
+		return be32_to_cpu(val);
+}
+
+static uint32_t cpu_to_elf32(uint32_t val)
+{
+	if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB)
+		return cpu_to_le32(val);
+	else
+		return cpu_to_be32(val);
+}
+
+#define elf_half_to_cpu(x)	elf16_to_cpu(x)
+#define elf_word_to_cpu(x)	elf32_to_cpu(x)
+
+#if ELF_BITS == 64
+static uint64_t elf64_to_cpu(uint64_t val)
+{
+	if (ehdr.e_ident[EI_DATA] == ELFDATA2LSB)
+		return le64_to_cpu(val);
+	else
+		return be64_to_cpu(val);
+}
+#define elf_addr_to_cpu(x)	elf64_to_cpu(x)
+#define elf_off_to_cpu(x)	elf64_to_cpu(x)
+#define elf_xword_to_cpu(x)	elf64_to_cpu(x)
+#else
+#define elf_addr_to_cpu(x)	elf32_to_cpu(x)
+#define elf_off_to_cpu(x)	elf32_to_cpu(x)
+#define elf_xword_to_cpu(x)	elf32_to_cpu(x)
+#endif
+
+static void read_ehdr(FILE *fp)
+{
+	if (fread(&ehdr, sizeof(ehdr), 1, fp) != 1)
+		die("Cannot read ELF header: %s\n", strerror(errno));
+
+	if (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0)
+		die("No ELF magic\n");
+
+	if (ehdr.e_ident[EI_CLASS] != ELF_CLASS)
+		die("Not a %d bit executable\n", ELF_BITS);
+
+	if ((ehdr.e_ident[EI_DATA] != ELFDATA2LSB) &&
+	    (ehdr.e_ident[EI_DATA] != ELFDATA2MSB))
+		die("Unknown ELF Endianness\n");
+
+	if (ehdr.e_ident[EI_VERSION] != EV_CURRENT)
+		die("Unknown ELF version\n");
+
+	/* Convert the fields to native endian */
+	ehdr.e_type      = elf_half_to_cpu(ehdr.e_type);
+	ehdr.e_machine   = elf_half_to_cpu(ehdr.e_machine);
+	ehdr.e_version   = elf_word_to_cpu(ehdr.e_version);
+	ehdr.e_entry     = elf_addr_to_cpu(ehdr.e_entry);
+	ehdr.e_phoff     = elf_off_to_cpu(ehdr.e_phoff);
+	ehdr.e_shoff     = elf_off_to_cpu(ehdr.e_shoff);
+	ehdr.e_flags     = elf_word_to_cpu(ehdr.e_flags);
+	ehdr.e_ehsize    = elf_half_to_cpu(ehdr.e_ehsize);
+	ehdr.e_phentsize = elf_half_to_cpu(ehdr.e_phentsize);
+	ehdr.e_phnum     = elf_half_to_cpu(ehdr.e_phnum);
+	ehdr.e_shentsize = elf_half_to_cpu(ehdr.e_shentsize);
+	ehdr.e_shnum     = elf_half_to_cpu(ehdr.e_shnum);
+	ehdr.e_shstrndx  = elf_half_to_cpu(ehdr.e_shstrndx);
+
+	if ((ehdr.e_type != ET_EXEC) && (ehdr.e_type != ET_DYN))
+		die("Unsupported ELF header type\n");
+
+	if (ehdr.e_machine != ELF_MACHINE)
+		die("Not for %s\n", ELF_MACHINE_NAME);
+
+	if (ehdr.e_version != EV_CURRENT)
+		die("Unknown ELF version\n");
+
+	if (ehdr.e_ehsize != sizeof(Elf_Ehdr))
+		die("Bad Elf header size\n");
+
+	if (ehdr.e_phentsize != sizeof(Elf_Phdr))
+		die("Bad program header entry\n");
+
+	if (ehdr.e_shentsize != sizeof(Elf_Shdr))
+		die("Bad section header entry\n");
+
+	if (ehdr.e_shstrndx >= ehdr.e_shnum)
+		die("String table index out of bounds\n");
+}
+
+static void read_shdrs(FILE *fp)
+{
+	int i;
+	Elf_Shdr shdr;
+
+	secs = calloc(ehdr.e_shnum, sizeof(struct section));
+	if (!secs)
+		die("Unable to allocate %d section headers\n", ehdr.e_shnum);
+
+	if (fseek(fp, ehdr.e_shoff, SEEK_SET) < 0)
+		die("Seek to %d failed: %s\n", ehdr.e_shoff, strerror(errno));
+
+	for (i = 0; i < ehdr.e_shnum; i++) {
+		struct section *sec = &secs[i];
+
+		sec->shdr_offset = ftell(fp);
+		if (fread(&shdr, sizeof(shdr), 1, fp) != 1)
+			die("Cannot read ELF section headers %d/%d: %s\n",
+			    i, ehdr.e_shnum, strerror(errno));
+		sec->shdr.sh_name      = elf_word_to_cpu(shdr.sh_name);
+		sec->shdr.sh_type      = elf_word_to_cpu(shdr.sh_type);
+		sec->shdr.sh_flags     = elf_xword_to_cpu(shdr.sh_flags);
+		sec->shdr.sh_addr      = elf_addr_to_cpu(shdr.sh_addr);
+		sec->shdr.sh_offset    = elf_off_to_cpu(shdr.sh_offset);
+		sec->shdr.sh_size      = elf_xword_to_cpu(shdr.sh_size);
+		sec->shdr.sh_link      = elf_word_to_cpu(shdr.sh_link);
+		sec->shdr.sh_info      = elf_word_to_cpu(shdr.sh_info);
+		sec->shdr.sh_addralign = elf_xword_to_cpu(shdr.sh_addralign);
+		sec->shdr.sh_entsize   = elf_xword_to_cpu(shdr.sh_entsize);
+		if (sec->shdr.sh_link < ehdr.e_shnum)
+			sec->link = &secs[sec->shdr.sh_link];
+	}
+}
+
+static void read_strtabs(FILE *fp)
+{
+	int i;
+
+	for (i = 0; i < ehdr.e_shnum; i++) {
+		struct section *sec = &secs[i];
+
+		if (sec->shdr.sh_type != SHT_STRTAB)
+			continue;
+
+		sec->strtab = malloc(sec->shdr.sh_size);
+		if (!sec->strtab)
+			die("malloc of %d bytes for strtab failed\n",
+			    sec->shdr.sh_size);
+
+		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0)
+			die("Seek to %d failed: %s\n",
+			    sec->shdr.sh_offset, strerror(errno));
+
+		if (fread(sec->strtab, 1, sec->shdr.sh_size, fp) !=
+		    sec->shdr.sh_size)
+			die("Cannot read symbol table: %s\n", strerror(errno));
+	}
+}
+
+static void read_symtabs(FILE *fp)
+{
+	int i, j;
+
+	for (i = 0; i < ehdr.e_shnum; i++) {
+		struct section *sec = &secs[i];
+		if (sec->shdr.sh_type != SHT_SYMTAB)
+			continue;
+
+		sec->symtab = malloc(sec->shdr.sh_size);
+		if (!sec->symtab)
+			die("malloc of %d bytes for symtab failed\n",
+			    sec->shdr.sh_size);
+
+		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0)
+			die("Seek to %d failed: %s\n",
+			    sec->shdr.sh_offset, strerror(errno));
+
+		if (fread(sec->symtab, 1, sec->shdr.sh_size, fp) !=
+		    sec->shdr.sh_size)
+			die("Cannot read symbol table: %s\n", strerror(errno));
+
+		for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Sym); j++) {
+			Elf_Sym *sym = &sec->symtab[j];
+
+			sym->st_name  = elf_word_to_cpu(sym->st_name);
+			sym->st_value = elf_addr_to_cpu(sym->st_value);
+			sym->st_size  = elf_xword_to_cpu(sym->st_size);
+			sym->st_shndx = elf_half_to_cpu(sym->st_shndx);
+		}
+	}
+}
+
+static void read_relocs(FILE *fp)
+{
+	static unsigned long base = 0;
+	int i, j;
+
+	if (!base) {
+		struct section *sec = sec_lookup(".text");
+
+		if (!sec)
+			die("Could not find .text section\n");
+
+		base = sec->shdr.sh_addr;
+	}
+
+	for (i = 0; i < ehdr.e_shnum; i++) {
+		struct section *sec = &secs[i];
+
+		if (sec->shdr.sh_type != SHT_REL_TYPE)
+			continue;
+
+		sec->reltab = malloc(sec->shdr.sh_size);
+		if (!sec->reltab)
+			die("malloc of %d bytes for relocs failed\n",
+			    sec->shdr.sh_size);
+
+		if (fseek(fp, sec->shdr.sh_offset, SEEK_SET) < 0)
+			die("Seek to %d failed: %s\n",
+			    sec->shdr.sh_offset, strerror(errno));
+
+		if (fread(sec->reltab, 1, sec->shdr.sh_size, fp) !=
+		    sec->shdr.sh_size)
+			die("Cannot read symbol table: %s\n", strerror(errno));
+
+		for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) {
+			Elf_Rel *rel = &sec->reltab[j];
+
+			rel->r_offset = elf_addr_to_cpu(rel->r_offset);
+			/* Set offset into kernel image */
+			rel->r_offset -= base;
+#if (ELF_BITS == 32)
+			rel->r_info   = elf_xword_to_cpu(rel->r_info);
+#else
+			/* Convert MIPS64 RELA format - only the symbol
+			 * index needs converting to native endianness
+			 */
+			rel->r_info   = rel->r_info;
+			ELF_R_SYM(rel->r_info) = elf32_to_cpu(ELF_R_SYM(rel->r_info));
+#endif
+#if (SHT_REL_TYPE == SHT_RELA)
+			rel->r_addend = elf_xword_to_cpu(rel->r_addend);
+#endif
+		}
+	}
+}
+
+static void remove_relocs(FILE *fp)
+{
+	int i;
+	Elf_Shdr shdr;
+
+	for (i = 0; i < ehdr.e_shnum; i++) {
+		struct section *sec = &secs[i];
+
+		if (sec->shdr.sh_type != SHT_REL_TYPE)
+			continue;
+
+		if (fseek(fp, sec->shdr_offset, SEEK_SET) < 0)
+			die("Seek to %d failed: %s\n",
+			    sec->shdr_offset, strerror(errno));
+
+		if (fread(&shdr, sizeof(shdr), 1, fp) != 1)
+			die("Cannot read ELF section headers %d/%d: %s\n",
+			    i, ehdr.e_shnum, strerror(errno));
+
+		/* Set relocation section size to 0, effectively removing it.
+		 * This is necessary due to lack of support for relocations
+		 * in objcopy when creating 32bit elf from 64bit elf.
+		 */
+		shdr.sh_size = 0;
+
+		if (fseek(fp, sec->shdr_offset, SEEK_SET) < 0)
+			die("Seek to %d failed: %s\n",
+			    sec->shdr_offset, strerror(errno));
+
+		if (fwrite(&shdr, sizeof(shdr), 1, fp) != 1)
+			die("Cannot write ELF section headers %d/%d: %s\n",
+			    i, ehdr.e_shnum, strerror(errno));
+	}
+}
+
+static void add_reloc(struct relocs *r, uint32_t offset, unsigned type)
+{
+	/* Relocation representation in binary table:
+	 * |76543210|76543210|76543210|76543210|
+	 * |  Type  |  offset from _text >> 2  |
+	 */
+	offset >>= 2;
+	if (offset > 0x00FFFFFF)
+		die("Kernel image exceeds maximum size for relocation!\n");
+
+	offset = (offset & 0x00FFFFFF) | ((type & 0xFF) << 24);
+
+	if (r->count == r->size) {
+		unsigned long newsize = r->size + 50000;
+		void *mem = realloc(r->offset, newsize * sizeof(r->offset[0]));
+
+		if (!mem)
+			die("realloc failed\n");
+
+		r->offset = mem;
+		r->size = newsize;
+	}
+	r->offset[r->count++] = offset;
+}
+
+static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel,
+			Elf_Sym *sym, const char *symname))
+{
+	int i;
+
+	/* Walk through the relocations */
+	for (i = 0; i < ehdr.e_shnum; i++) {
+		char *sym_strtab;
+		Elf_Sym *sh_symtab;
+		struct section *sec_applies, *sec_symtab;
+		int j;
+		struct section *sec = &secs[i];
+
+		if (sec->shdr.sh_type != SHT_REL_TYPE)
+			continue;
+
+		sec_symtab  = sec->link;
+		sec_applies = &secs[sec->shdr.sh_info];
+		if (!(sec_applies->shdr.sh_flags & SHF_ALLOC))
+			continue;
+
+		sh_symtab = sec_symtab->symtab;
+		sym_strtab = sec_symtab->link->strtab;
+		for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) {
+			Elf_Rel *rel = &sec->reltab[j];
+			Elf_Sym *sym = &sh_symtab[ELF_R_SYM(rel->r_info)];
+			const char *symname = sym_name(sym_strtab, sym);
+
+			process(sec, rel, sym, symname);
+		}
+	}
+}
+
+static int do_reloc(struct section *sec, Elf_Rel *rel, Elf_Sym *sym,
+		      const char *symname)
+{
+	unsigned r_type = ELF_R_TYPE(rel->r_info);
+	unsigned bind = ELF_ST_BIND(sym->st_info);
+
+	if ((bind == STB_WEAK) && (sym->st_value == 0)) {
+		/* Don't relocate weak symbols without a target */
+		return 0;
+	}
+
+	if (regex_skip_reloc(symname))
+		return 0;
+
+	switch (r_type) {
+	case R_MIPS_NONE:
+	case R_MIPS_REL32:
+	case R_MIPS_PC16:
+	case R_MIPS_PC21_S2:
+	case R_MIPS_PC26_S2:
+		/*
+		 * NONE can be ignored and PC relative relocations don't
+		 * need to be adjusted.
+		 */
+	case R_MIPS_HIGHEST:
+	case R_MIPS_HIGHER:
+		/* We support relocating within the same 4Gb segment only,
+		 * thus leaving the top 32bits unchanged
+		 */
+	case R_MIPS_LO16:
+		/* We support relocating by 64k jumps only
+		 * thus leaving the bottom 16bits unchanged
+		 */
+		break;
+
+	case R_MIPS_64:
+	case R_MIPS_32:
+	case R_MIPS_26:
+	case R_MIPS_HI16:
+		add_reloc(&relocs, rel->r_offset, r_type);
+		break;
+
+	default:
+		die("Unsupported relocation type: %s (%d)\n",
+		    rel_type(r_type), r_type);
+		break;
+	}
+
+	return 0;
+}
+
+static int write_reloc_as_bin(uint32_t v, FILE *f)
+{
+	unsigned char buf[4];
+
+	v = cpu_to_elf32(v);
+
+	memcpy(buf, &v, sizeof(uint32_t));
+	return fwrite(buf, 1, 4, f);
+}
+
+static int write_reloc_as_text(uint32_t v, FILE *f)
+{
+	int res;
+
+	res = fprintf(f, "\t.long 0x%08"PRIx32"\n", v);
+	if (res < 0)
+		return res;
+	else
+		return sizeof(uint32_t);
+}
+
+static void emit_relocs(int as_text, int as_bin, FILE *outf)
+{
+	int i;
+	int (*write_reloc)(uint32_t, FILE *) = write_reloc_as_bin;
+	int size = 0;
+	int size_reserved;
+	struct section *sec_reloc;
+
+	sec_reloc = sec_lookup(".data.reloc");
+	if (!sec_reloc)
+		die("Could not find relocation section\n");
+
+	size_reserved = sec_reloc->shdr.sh_size;
+
+	/* Collect up the relocations */
+	walk_relocs(do_reloc);
+
+	/* Print the relocations */
+	if (as_text) {
+		/* Print the relocations in a form suitable that
+		 * gas will like.
+		 */
+		printf(".section \".data.reloc\",\"a\"\n");
+		printf(".balign 4\n");
+		/* Output text to stdout */
+		write_reloc = write_reloc_as_text;
+		outf = stdout;
+	} else if (as_bin) {
+		/* Output raw binary to stdout */
+		outf = stdout;
+	} else {
+		/* Seek to offset of the relocation section.
+		* Each relocation is then written into the
+		* vmlinux kernel image.
+		*/
+		if (fseek(outf, sec_reloc->shdr.sh_offset, SEEK_SET) < 0) {
+			die("Seek to %d failed: %s\n",
+				sec_reloc->shdr.sh_offset, strerror(errno));
+		}
+	}
+
+	for (i = 0; i < relocs.count; i++)
+		size += write_reloc(relocs.offset[i], outf);
+
+	/* Print a stop, but only if we've actually written some relocs */
+	if (size)
+		size += write_reloc(0, outf);
+
+	if (size > size_reserved)
+		/* Die, but suggest a value for CONFIG_RELOCATION_TABLE_SIZE
+		 * which will fix this problem and allow a bit of headroom
+		 * if more kernel features are enabled
+		 */
+		die("Relocations overflow available space!\n" \
+		    "Please adjust CONFIG_RELOCATION_TABLE_SIZE " \
+		    "to at least 0x%08x\n", (size + 0x1000) & ~0xFFF);
+}
+
+/*
+ * As an aid to debugging problems with different linkers
+ * print summary information about the relocs.
+ * Since different linkers tend to emit the sections in
+ * different orders we use the section names in the output.
+ */
+static int do_reloc_info(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym,
+				const char *symname)
+{
+	printf("%16s  0x%08x  %16s  %40s  %16s\n",
+		sec_name(sec->shdr.sh_info),
+		(unsigned int)rel->r_offset,
+		rel_type(ELF_R_TYPE(rel->r_info)),
+		symname,
+		sec_name(sym->st_shndx));
+	return 0;
+}
+
+static void print_reloc_info(void)
+{
+	printf("%16s  %10s  %16s  %40s  %16s\n",
+		"reloc section",
+		"offset",
+		"reloc type",
+		"symbol",
+		"symbol section");
+	walk_relocs(do_reloc_info);
+}
+
+#if ELF_BITS == 64
+# define process process_64
+#else
+# define process process_32
+#endif
+
+void process(FILE *fp, int as_text, int as_bin,
+	     int show_reloc_info, int keep_relocs)
+{
+	regex_init();
+	read_ehdr(fp);
+	read_shdrs(fp);
+	read_strtabs(fp);
+	read_symtabs(fp);
+	read_relocs(fp);
+	if (show_reloc_info) {
+		print_reloc_info();
+		return;
+	}
+	emit_relocs(as_text, as_bin, fp);
+	if (!keep_relocs)
+		remove_relocs(fp);
+}