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dpavlin |
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/* |
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* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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dpavlin |
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* $Id: file.c,v 1.96 2005/06/02 12:31:39 debug Exp $ |
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dpavlin |
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* |
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* This file contains functions which load executable images into (emulated) |
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* memory. File formats recognized so far: |
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* |
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* ELF 32-bit and 64-bit ELFs |
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* a.out old format used by OpenBSD 2.x pmax kernels |
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* ecoff old format used by Ultrix, Windows NT, etc |
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* srec Motorola SREC format |
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* raw raw binaries, "address:[skiplen:[entrypoint:]]filename" |
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* |
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* If a file is not of one of the above mentioned formats, it is assumed |
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* to be symbol data generated by 'nm' or 'nm -S'. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <sys/types.h> |
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#include "cpu.h" |
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#include "exec_aout.h" |
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#include "exec_ecoff.h" |
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#include "exec_elf.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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#include "symbol.h" |
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/* ELF machine types as strings: (same as exec_elf.h) */ |
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dpavlin |
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#define N_ELF_MACHINE_TYPES 64 |
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dpavlin |
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static char *elf_machine_type[N_ELF_MACHINE_TYPES] = { |
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"NONE", "M32", "SPARC", "386", /* 0..3 */ |
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"68K", "88K", "486", "860", /* 4..7 */ |
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"MIPS", "S370", "MIPS_RS3_LE", "RS6000", /* 8..11 */ |
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"unknown12", "unknown13", "unknown14", "PARISC", /* 12..15 */ |
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"NCUBE", "VPP500", "SPARC32PLUS", "960", /* 16..19 */ |
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"PPC", "PPC64", "unknown22", "unknown23", /* 20..23 */ |
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"unknown24", "unknown25", "unknown26", "unknown27", /* 24..27 */ |
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"unknown28", "unknown29", "unknown30", "unknown31", /* 28..31 */ |
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"unknown32", "unknown33", "unknown34", "unknown35", /* 32..35 */ |
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"V800", "FR20", "RH32", "RCE", /* 36..39 */ |
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"ARM", "ALPHA", "SH", "SPARCV9", /* 40..43 */ |
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"TRICORE", "ARC", "H8_300", "H8_300H", /* 44..47 */ |
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"H8S", "H8_500", "IA_64", "MIPS_X", /* 48..51 */ |
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dpavlin |
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"COLDFIRE", "68HC12", "unknown54", "unknown55", /* 52..55 */ |
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"unknown56", "unknown57", "unknown58", "unknown59", /* 56..59 */ |
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"unknown60", "unknown61", "AMD64", "unknown63" /* 60..63 */ |
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dpavlin |
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}; |
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/* |
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* This should be increased by every routine here that actually loads an |
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* executable file into memory. (For example, loading a symbol file should |
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* NOT increase this.) |
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*/ |
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static int n_executables_loaded = 0; |
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struct aout_symbol { |
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uint32_t strindex; |
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uint32_t type; |
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uint32_t addr; |
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}; |
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/* Special symbol format used by Microsoft-ish COFF files: */ |
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struct ms_sym { |
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unsigned char name[8]; |
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unsigned char value[4]; |
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unsigned char section[2]; |
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unsigned char type[2]; |
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unsigned char storage_class; |
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unsigned char n_aux_syms; |
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}; |
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#define unencode(var,dataptr,typ) { \ |
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int Wi; unsigned char Wb; \ |
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unsigned char *Wp = (unsigned char *) dataptr; \ |
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int Wlen = sizeof(typ); \ |
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var = 0; \ |
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for (Wi=0; Wi<Wlen; Wi++) { \ |
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if (encoding == ELFDATA2LSB) \ |
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Wb = Wp[Wlen-1 - Wi]; \ |
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else \ |
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Wb = Wp[Wi]; \ |
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if (Wi == 0 && (Wb & 0x80)) { \ |
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var --; /* set var to -1 :-) */ \ |
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var <<= 8; \ |
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} \ |
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var |= Wb; \ |
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if (Wi < Wlen-1) \ |
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var <<= 8; \ |
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} \ |
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} |
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dpavlin |
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#define AOUT_FLAG_DECOSF1 1 |
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#define AOUT_FLAG_FROM_BEGINNING 2 |
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dpavlin |
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/* |
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* file_load_aout(): |
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* |
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* Loads an a.out binary image into the emulated memory. The entry point |
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* (read from the a.out header) is stored in the specified CPU's registers. |
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* |
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* TODO: This has to be rewritten / corrected to support multiple a.out |
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* formats, where text/data are aligned differently. |
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*/ |
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static void file_load_aout(struct machine *m, struct memory *mem, |
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dpavlin |
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char *filename, int flags, |
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dpavlin |
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uint64_t *entrypointp, int arch, int *byte_orderp) |
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{ |
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struct exec aout_header; |
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FILE *f; |
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int len; |
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int encoding = ELFDATA2LSB; |
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uint32_t entry, datasize, textsize; |
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int32_t symbsize = 0; |
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uint32_t vaddr, total_len; |
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unsigned char buf[4096]; |
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unsigned char *syms; |
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f = fopen(filename, "r"); |
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if (f == NULL) { |
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perror(filename); |
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exit(1); |
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} |
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dpavlin |
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if (flags & AOUT_FLAG_DECOSF1) { |
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dpavlin |
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fread(&buf, 1, 32, f); |
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vaddr = buf[16] + (buf[17] << 8) + |
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(buf[18] << 16) + (buf[19] << 24); |
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entry = buf[20] + (buf[21] << 8) + |
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(buf[22] << 16) + (buf[23] << 24); |
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debug("OSF1 a.out, load address 0x%08lx, " |
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"entry point 0x%08x\n", (long)vaddr, (long)entry); |
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symbsize = 0; |
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fseek(f, 0, SEEK_END); |
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/* This is of course wrong, but should work anyway: */ |
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textsize = ftell(f) - 512; |
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datasize = 0; |
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fseek(f, 512, SEEK_SET); |
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} else { |
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len = fread(&aout_header, 1, sizeof(aout_header), f); |
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if (len != sizeof(aout_header)) { |
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fprintf(stderr, "%s: not a complete a.out image\n", |
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filename); |
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exit(1); |
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} |
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unencode(entry, &aout_header.a_entry, uint32_t); |
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vaddr = entry; |
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debug("a.out, entry point 0x%08lx\n", (long)entry); |
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unencode(textsize, &aout_header.a_text, uint32_t); |
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unencode(datasize, &aout_header.a_data, uint32_t); |
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debug("text + data = %i + %i bytes\n", textsize, datasize); |
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unencode(symbsize, &aout_header.a_syms, uint32_t); |
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} |
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dpavlin |
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if (flags & AOUT_FLAG_FROM_BEGINNING) { |
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fseek(f, 0, SEEK_SET); |
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vaddr &= ~0xfff; |
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} |
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dpavlin |
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/* Load text and data: */ |
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total_len = textsize + datasize; |
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while (total_len != 0) { |
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len = total_len > sizeof(buf) ? sizeof(buf) : total_len; |
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len = fread(buf, 1, len, f); |
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/* printf("fread len=%i vaddr=%x buf[0..]=%02x %02x %02x\n", |
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len, (int)vaddr, buf[0], buf[1], buf[2]); */ |
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if (len > 0) |
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m->cpus[0]->memory_rw(m->cpus[0], mem, vaddr, |
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&buf[0], len, MEM_WRITE, NO_EXCEPTIONS); |
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else { |
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dpavlin |
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if (flags & AOUT_FLAG_DECOSF1) |
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dpavlin |
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break; |
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else { |
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fprintf(stderr, "could not read from %s\n", |
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filename); |
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exit(1); |
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} |
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} |
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vaddr += len; |
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total_len -= len; |
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} |
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if (symbsize != 0) { |
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struct aout_symbol *aout_symbol_ptr; |
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int i, n_symbols; |
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uint32_t type, addr, str_index; |
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uint32_t strings_len; |
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char *string_symbols; |
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off_t oldpos; |
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debug("symbols: %i bytes @ 0x%x\n", symbsize, (int)ftell(f)); |
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syms = malloc(symbsize); |
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if (syms == NULL) { |
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fprintf(stderr, "out of memory\n"); |
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exit(1); |
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} |
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len = fread(syms, 1, symbsize, f); |
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if (len != symbsize) { |
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fprintf(stderr, "error reading symbols from %s\n", |
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filename); |
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exit(1); |
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} |
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oldpos = ftell(f); |
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fseek(f, 0, SEEK_END); |
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strings_len = ftell(f) - oldpos; |
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fseek(f, oldpos, SEEK_SET); |
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debug("strings: %i bytes @ 0x%x\n", strings_len, (int)ftell(f)); |
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string_symbols = malloc(strings_len); |
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if (string_symbols == NULL) { |
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fprintf(stderr, "out of memory\n"); |
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exit(1); |
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} |
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fread(string_symbols, 1, strings_len, f); |
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aout_symbol_ptr = (struct aout_symbol *) syms; |
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n_symbols = symbsize / sizeof(struct aout_symbol); |
256 |
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i = 0; |
257 |
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while (i < n_symbols) { |
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unencode(str_index, &aout_symbol_ptr[i].strindex, |
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uint32_t); |
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unencode(type, &aout_symbol_ptr[i].type, uint32_t); |
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unencode(addr, &aout_symbol_ptr[i].addr, uint32_t); |
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/* debug("symbol type 0x%04x @ 0x%08x: %s\n", |
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type, addr, string_symbols + str_index); */ |
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266 |
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if (type != 0 && addr != 0) |
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add_symbol_name(&m->symbol_context, |
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addr, 0, string_symbols + str_index, 0); |
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i++; |
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} |
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free(string_symbols); |
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free(syms); |
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} |
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fclose(f); |
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dpavlin |
6 |
*entrypointp = (int32_t)entry; |
279 |
dpavlin |
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280 |
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if (encoding == ELFDATA2LSB) |
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*byte_orderp = EMUL_LITTLE_ENDIAN; |
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else |
283 |
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*byte_orderp = EMUL_BIG_ENDIAN; |
284 |
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285 |
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n_executables_loaded ++; |
286 |
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} |
287 |
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288 |
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289 |
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/* |
290 |
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* file_load_ecoff(): |
291 |
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* |
292 |
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* Loads an ecoff binary image into the emulated memory. The entry point |
293 |
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* (read from the ecoff header) is stored in the specified CPU's registers. |
294 |
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*/ |
295 |
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static void file_load_ecoff(struct machine *m, struct memory *mem, |
296 |
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char *filename, uint64_t *entrypointp, |
297 |
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int arch, uint64_t *gpp, int *byte_orderp) |
298 |
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{ |
299 |
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struct ecoff_exechdr exechdr; |
300 |
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int f_magic, f_nscns, f_nsyms; |
301 |
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int a_magic; |
302 |
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off_t f_symptr, a_tsize, a_dsize, a_bsize; |
303 |
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uint64_t a_entry, a_tstart, a_dstart, a_bstart, a_gp, end_addr=0; |
304 |
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char *format_name; |
305 |
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struct ecoff_scnhdr scnhdr; |
306 |
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FILE *f; |
307 |
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int len, secn, total_len, chunk_size; |
308 |
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int encoding = ELFDATA2LSB; /* Assume little-endian. See below */ |
309 |
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int program_byte_order = -1; |
310 |
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unsigned char buf[8192]; |
311 |
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312 |
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f = fopen(filename, "r"); |
313 |
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if (f == NULL) { |
314 |
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perror(filename); |
315 |
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exit(1); |
316 |
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} |
317 |
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318 |
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len = fread(&exechdr, 1, sizeof(exechdr), f); |
319 |
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if (len != sizeof(exechdr)) { |
320 |
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fprintf(stderr, " not a complete ecoff image\n"); |
321 |
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exit(1); |
322 |
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} |
323 |
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324 |
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/* |
325 |
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* The following code looks a bit ugly, but it should work. The ECOFF |
326 |
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* 16-bit magic value seems to be stored in MSB byte order for |
327 |
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* big-endian binaries, and LSB byte order for little-endian binaries. |
328 |
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* |
329 |
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* The unencode() assumes little-endianness by default. |
330 |
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*/ |
331 |
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unencode(f_magic, &exechdr.f.f_magic, uint16_t); |
332 |
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switch (f_magic) { |
333 |
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case ((ECOFF_MAGIC_MIPSEB & 0xff) << 8) + |
334 |
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((ECOFF_MAGIC_MIPSEB >> 8) & 0xff): |
335 |
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format_name = "MIPS1 BE"; |
336 |
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encoding = ELFDATA2MSB; |
337 |
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break; |
338 |
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case ECOFF_MAGIC_MIPSEB: |
339 |
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/* NOTE: Big-endian header, little-endian code! */ |
340 |
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format_name = "MIPS1 BE-LE"; |
341 |
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encoding = ELFDATA2MSB; |
342 |
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program_byte_order = ELFDATA2LSB; |
343 |
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break; |
344 |
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case ECOFF_MAGIC_MIPSEL: |
345 |
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format_name = "MIPS1 LE"; |
346 |
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encoding = ELFDATA2LSB; |
347 |
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break; |
348 |
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case ((ECOFF_MAGIC_MIPSEB2 & 0xff) << 8) + |
349 |
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((ECOFF_MAGIC_MIPSEB2 >> 8) & 0xff): |
350 |
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format_name = "MIPS2 BE"; |
351 |
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encoding = ELFDATA2MSB; |
352 |
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break; |
353 |
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case ECOFF_MAGIC_MIPSEL2: |
354 |
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format_name = "MIPS2 LE"; |
355 |
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encoding = ELFDATA2LSB; |
356 |
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break; |
357 |
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case ((ECOFF_MAGIC_MIPSEB3 & 0xff) << 8) + |
358 |
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((ECOFF_MAGIC_MIPSEB3 >> 8) & 0xff): |
359 |
|
|
format_name = "MIPS3 BE"; |
360 |
|
|
encoding = ELFDATA2MSB; |
361 |
|
|
break; |
362 |
|
|
case ECOFF_MAGIC_MIPSEL3: |
363 |
|
|
format_name = "MIPS3 LE"; |
364 |
|
|
encoding = ELFDATA2LSB; |
365 |
|
|
break; |
366 |
|
|
default: |
367 |
|
|
fprintf(stderr, "%s: unimplemented ECOFF format, magic = " |
368 |
|
|
"0x%04x\n", filename, (int)f_magic); |
369 |
|
|
exit(1); |
370 |
|
|
} |
371 |
|
|
|
372 |
|
|
/* Read various header information: */ |
373 |
|
|
unencode(f_nscns, &exechdr.f.f_nscns, uint16_t); |
374 |
|
|
unencode(f_symptr, &exechdr.f.f_symptr, uint32_t); |
375 |
|
|
unencode(f_nsyms, &exechdr.f.f_nsyms, uint32_t); |
376 |
|
|
debug("ECOFF, %s, %i sections, %i symbols @ 0x%lx\n", |
377 |
|
|
format_name, f_nscns, f_nsyms, (long)f_symptr); |
378 |
|
|
|
379 |
|
|
unencode(a_magic, &exechdr.a.magic, uint16_t); |
380 |
|
|
unencode(a_tsize, &exechdr.a.tsize, uint32_t); |
381 |
|
|
unencode(a_dsize, &exechdr.a.dsize, uint32_t); |
382 |
|
|
unencode(a_bsize, &exechdr.a.bsize, uint32_t); |
383 |
|
|
debug("magic 0x%04x, tsize 0x%x, dsize 0x%x, bsize 0x%x\n", |
384 |
|
|
a_magic, (int)a_tsize, (int)a_dsize, (int)a_bsize); |
385 |
|
|
|
386 |
|
|
unencode(a_tstart, &exechdr.a.text_start, uint32_t); |
387 |
|
|
unencode(a_dstart, &exechdr.a.data_start, uint32_t); |
388 |
|
|
unencode(a_bstart, &exechdr.a.bss_start, uint32_t); |
389 |
|
|
debug("text @ 0x%08x, data @ 0x%08x, bss @ 0x%08x\n", |
390 |
|
|
(int)a_tstart, (int)a_dstart, (int)a_bstart); |
391 |
|
|
|
392 |
|
|
unencode(a_entry, &exechdr.a.entry, uint32_t); |
393 |
|
|
unencode(a_gp, &exechdr.a.gp_value, uint32_t); |
394 |
|
|
debug("entrypoint 0x%08x, gp = 0x%08x\n", |
395 |
|
|
(int)a_entry, (int)a_gp); |
396 |
|
|
|
397 |
|
|
/* |
398 |
|
|
* Special hack for a MACH/pmax kernel, I don't know how applicable |
399 |
|
|
* this is for other files: |
400 |
|
|
* there are no sections (!), and a_magic = 0x0108 instead of |
401 |
|
|
* 0x0107 as it is on most other (E)COFF files I've seen. |
402 |
|
|
* |
403 |
|
|
* Then load everything after the header to the text start address. |
404 |
|
|
*/ |
405 |
|
|
if (f_nscns == 0 && a_magic == 0x108) { |
406 |
|
|
uint64_t where = a_tstart; |
407 |
|
|
total_len = 0; |
408 |
|
|
fseek(f, 0x50, SEEK_SET); |
409 |
|
|
while (!feof(f)) { |
410 |
|
|
chunk_size = 256; |
411 |
|
|
len = fread(buf, 1, chunk_size, f); |
412 |
|
|
|
413 |
|
|
if (len > 0) |
414 |
|
|
m->cpus[0]->memory_rw(m->cpus[0], mem, where, |
415 |
|
|
&buf[0], len, MEM_WRITE, NO_EXCEPTIONS); |
416 |
|
|
where += len; |
417 |
|
|
total_len += len; |
418 |
|
|
} |
419 |
|
|
debug("MACH/pmax hack (!), read 0x%x bytes\n", total_len); |
420 |
|
|
} |
421 |
|
|
|
422 |
|
|
/* Go through all the section headers: */ |
423 |
|
|
for (secn=0; secn<f_nscns; secn++) { |
424 |
|
|
off_t s_scnptr, s_relptr, s_lnnoptr, oldpos; |
425 |
|
|
int s_nreloc, s_nlnno, s_flags; |
426 |
|
|
int s_size; |
427 |
|
|
unsigned int i; |
428 |
|
|
uint64_t s_paddr, s_vaddr; |
429 |
|
|
|
430 |
|
|
/* Read a section header: */ |
431 |
|
|
len = fread(&scnhdr, 1, sizeof(scnhdr), f); |
432 |
|
|
if (len != sizeof(scnhdr)) { |
433 |
|
|
fprintf(stderr, "%s: incomplete section " |
434 |
|
|
"header %i\n", filename, secn); |
435 |
|
|
exit(1); |
436 |
|
|
} |
437 |
|
|
|
438 |
|
|
/* Show the section name: */ |
439 |
|
|
debug("section "); |
440 |
|
|
for (i=0; i<sizeof(scnhdr.s_name); i++) |
441 |
|
|
if (scnhdr.s_name[i] >= 32 && scnhdr.s_name[i] < 127) |
442 |
|
|
debug("%c", scnhdr.s_name[i]); |
443 |
|
|
else |
444 |
|
|
break; |
445 |
|
|
debug(" ("); |
446 |
|
|
|
447 |
|
|
unencode(s_paddr, &scnhdr.s_paddr, uint32_t); |
448 |
|
|
unencode(s_vaddr, &scnhdr.s_vaddr, uint32_t); |
449 |
|
|
unencode(s_size, &scnhdr.s_size, uint32_t); |
450 |
|
|
unencode(s_scnptr, &scnhdr.s_scnptr, uint32_t); |
451 |
|
|
unencode(s_relptr, &scnhdr.s_relptr, uint32_t); |
452 |
|
|
unencode(s_lnnoptr, &scnhdr.s_lnnoptr, uint32_t); |
453 |
|
|
unencode(s_nreloc, &scnhdr.s_nreloc, uint16_t); |
454 |
|
|
unencode(s_nlnno, &scnhdr.s_nlnno, uint16_t); |
455 |
|
|
unencode(s_flags, &scnhdr.s_flags, uint32_t); |
456 |
|
|
|
457 |
|
|
debug("0x%x @ 0x%08x, offset 0x%lx, flags 0x%x)\n", |
458 |
|
|
(int)s_size, (int)s_vaddr, (long)s_scnptr, (int)s_flags); |
459 |
|
|
|
460 |
|
|
end_addr = s_vaddr + s_size; |
461 |
|
|
|
462 |
|
|
if (s_relptr != 0) { |
463 |
|
|
/* |
464 |
|
|
* TODO: Read this url, or similar: |
465 |
|
|
* http://www.iecc.com/linker/linker07.html |
466 |
|
|
*/ |
467 |
|
|
fprintf(stderr, "%s: relocatable code/data in " |
468 |
|
|
"section nr %i: not yet implemented\n", |
469 |
|
|
filename, secn); |
470 |
|
|
exit(1); |
471 |
|
|
} |
472 |
|
|
|
473 |
|
|
/* Loadable? Then load the section: */ |
474 |
|
|
if (s_scnptr != 0 && s_size != 0 && |
475 |
|
|
s_vaddr != 0 && !(s_flags & 0x02)) { |
476 |
|
|
/* Remember the current file offset: */ |
477 |
|
|
oldpos = ftell(f); |
478 |
|
|
|
479 |
|
|
/* Load the section into emulated memory: */ |
480 |
|
|
fseek(f, s_scnptr, SEEK_SET); |
481 |
|
|
total_len = 0; |
482 |
|
|
chunk_size = 1; |
483 |
|
|
if ((s_vaddr & 0xf) == 0) chunk_size = 0x10; |
484 |
|
|
if ((s_vaddr & 0xff) == 0) chunk_size = 0x100; |
485 |
|
|
if ((s_vaddr & 0xfff) == 0) chunk_size = 0x1000; |
486 |
|
|
while (total_len < s_size) { |
487 |
|
|
len = chunk_size; |
488 |
|
|
if (total_len + len > s_size) |
489 |
|
|
len = s_size - total_len; |
490 |
|
|
len = fread(buf, 1, chunk_size, f); |
491 |
|
|
if (len == 0) { |
492 |
|
|
debug("!!! total_len = %i, " |
493 |
|
|
"chunk_size = %i, len = %i\n", |
494 |
|
|
total_len, chunk_size, len); |
495 |
|
|
break; |
496 |
|
|
} |
497 |
|
|
|
498 |
|
|
m->cpus[0]->memory_rw(m->cpus[0], mem, s_vaddr, |
499 |
|
|
&buf[0], len, MEM_WRITE, NO_EXCEPTIONS); |
500 |
|
|
s_vaddr += len; |
501 |
|
|
total_len += len; |
502 |
|
|
} |
503 |
|
|
|
504 |
|
|
/* Return to position inside the section headers: */ |
505 |
|
|
fseek(f, oldpos, SEEK_SET); |
506 |
|
|
} |
507 |
|
|
} |
508 |
|
|
|
509 |
|
|
if (f_symptr != 0 && f_nsyms != 0) { |
510 |
|
|
struct ecoff_symhdr symhdr; |
511 |
|
|
int sym_magic, iextMax, issExtMax, issMax, crfd; |
512 |
|
|
off_t cbRfdOffset, cbExtOffset, cbSsExtOffset, cbSsOffset; |
513 |
|
|
char *symbol_data; |
514 |
|
|
struct ecoff_extsym *extsyms; |
515 |
|
|
int nsymbols, sym_nr; |
516 |
|
|
|
517 |
|
|
fseek(f, f_symptr, SEEK_SET); |
518 |
|
|
|
519 |
|
|
len = fread(&symhdr, 1, sizeof(symhdr), f); |
520 |
|
|
if (len != sizeof(symhdr)) { |
521 |
|
|
fprintf(stderr, "%s: not a complete " |
522 |
|
|
"ecoff image: symhdr broken\n", filename); |
523 |
|
|
exit(1); |
524 |
|
|
} |
525 |
|
|
|
526 |
|
|
unencode(sym_magic, &symhdr.magic, uint16_t); |
527 |
|
|
unencode(crfd, &symhdr.crfd, uint32_t); |
528 |
|
|
unencode(cbRfdOffset, &symhdr.cbRfdOffset, uint32_t); |
529 |
|
|
unencode(issMax, &symhdr.issMax, uint32_t); |
530 |
|
|
unencode(cbSsOffset, &symhdr.cbSsOffset, uint32_t); |
531 |
|
|
unencode(issExtMax, &symhdr.issExtMax, uint32_t); |
532 |
|
|
unencode(cbSsExtOffset, &symhdr.cbSsExtOffset, uint32_t); |
533 |
|
|
unencode(iextMax, &symhdr.iextMax, uint32_t); |
534 |
|
|
unencode(cbExtOffset, &symhdr.cbExtOffset, uint32_t); |
535 |
|
|
|
536 |
|
|
if (sym_magic != MIPS_MAGIC_SYM) { |
537 |
|
|
unsigned char *ms_sym_buf; |
538 |
|
|
struct ms_sym *sym; |
539 |
|
|
int n_real_symbols = 0; |
540 |
|
|
|
541 |
|
|
debug("bad symbol magic, assuming Microsoft format: "); |
542 |
|
|
|
543 |
|
|
/* |
544 |
|
|
* See http://www.lisoleg.net/lisoleg/elfandlib/ |
545 |
|
|
* Microsoft%20Portable%20Executable%20COFF%20For |
546 |
|
|
* mat%20Specification.txt |
547 |
|
|
* for more details. |
548 |
|
|
*/ |
549 |
|
|
ms_sym_buf = malloc(sizeof(struct ms_sym) * f_nsyms); |
550 |
|
|
if (ms_sym_buf == NULL) { |
551 |
|
|
fprintf(stderr, "out of memory\n"); |
552 |
|
|
exit(1); |
553 |
|
|
} |
554 |
|
|
fseek(f, f_symptr, SEEK_SET); |
555 |
|
|
len = fread(ms_sym_buf, 1, |
556 |
|
|
sizeof(struct ms_sym) * f_nsyms, f); |
557 |
|
|
sym = (struct ms_sym *) ms_sym_buf; |
558 |
|
|
for (sym_nr=0; sym_nr<f_nsyms; sym_nr++) { |
559 |
|
|
char name[300]; |
560 |
|
|
uint32_t v, t, altname; |
561 |
|
|
/* debug("sym %5i: '", sym_nr); |
562 |
|
|
for (i=0; i<8 && sym->name[i]; i++) |
563 |
|
|
debug("%c", sym->name[i]); */ |
564 |
|
|
v = sym->value[0] + (sym->value[1] << 8) |
565 |
|
|
+ (sym->value[2] << 16) |
566 |
|
|
+ (sym->value[3] << 24); |
567 |
|
|
altname = sym->name[4] + (sym->name[5] << 8) |
568 |
|
|
+ (sym->name[6] << 16) |
569 |
|
|
+ (sym->name[3] << 24); |
570 |
|
|
t = (sym->type[1] << 8) + sym->type[0]; |
571 |
|
|
/* TODO: big endian COFF? */ |
572 |
|
|
/* debug("' value=0x%x type=0x%04x", v, t); */ |
573 |
|
|
|
574 |
|
|
if (t == 0x20 && sym->name[0]) { |
575 |
|
|
memcpy(name, sym->name, 8); |
576 |
|
|
name[8] = '\0'; |
577 |
|
|
add_symbol_name(&m->symbol_context, |
578 |
|
|
v, 0, name, 0); |
579 |
|
|
n_real_symbols ++; |
580 |
|
|
} else if (t == 0x20 && !sym->name[0]) { |
581 |
|
|
off_t ofs; |
582 |
|
|
ofs = f_symptr + altname + |
583 |
|
|
sizeof(struct ms_sym) * f_nsyms; |
584 |
|
|
fseek(f, ofs, SEEK_SET); |
585 |
|
|
fread(name, 1, sizeof(name), f); |
586 |
|
|
name[sizeof(name)-1] = '\0'; |
587 |
|
|
/* debug(" [altname=0x%x '%s']", |
588 |
|
|
altname, name); */ |
589 |
|
|
add_symbol_name(&m->symbol_context, |
590 |
|
|
v, 0, name, 0); |
591 |
|
|
n_real_symbols ++; |
592 |
|
|
} |
593 |
|
|
|
594 |
|
|
|
595 |
|
|
if (sym->n_aux_syms) { |
596 |
|
|
int n = sym->n_aux_syms; |
597 |
|
|
/* debug(" aux='"); */ |
598 |
|
|
while (n-- > 0) { |
599 |
|
|
sym ++; sym_nr ++; |
600 |
|
|
/* for (i=0; i<8 && |
601 |
|
|
sym->name[i]; i++) |
602 |
|
|
debug("%c", |
603 |
|
|
sym->name[i]); */ |
604 |
|
|
} |
605 |
|
|
/* debug("'"); */ |
606 |
|
|
} |
607 |
|
|
/* debug("\n"); */ |
608 |
|
|
sym ++; |
609 |
|
|
} |
610 |
|
|
|
611 |
|
|
debug("%i symbols\n", n_real_symbols); |
612 |
|
|
free(ms_sym_buf); |
613 |
|
|
|
614 |
|
|
goto skip_normal_coff_symbols; |
615 |
|
|
} |
616 |
|
|
|
617 |
|
|
debug("symbol header: magic = 0x%x\n", sym_magic); |
618 |
|
|
|
619 |
|
|
debug("%i symbols @ 0x%08x (strings @ 0x%08x)\n", |
620 |
|
|
iextMax, cbExtOffset, cbSsExtOffset); |
621 |
|
|
|
622 |
|
|
symbol_data = malloc(issExtMax + 2); |
623 |
|
|
if (symbol_data == NULL) { |
624 |
|
|
fprintf(stderr, "out of memory\n"); |
625 |
|
|
exit(1); |
626 |
|
|
} |
627 |
|
|
memset(symbol_data, 0, issExtMax + 2); |
628 |
|
|
fseek(f, cbSsExtOffset, SEEK_SET); |
629 |
|
|
fread(symbol_data, 1, issExtMax + 1, f); |
630 |
|
|
|
631 |
|
|
nsymbols = iextMax; |
632 |
|
|
|
633 |
|
|
extsyms = malloc(iextMax * sizeof(struct ecoff_extsym)); |
634 |
|
|
if (extsyms == NULL) { |
635 |
|
|
fprintf(stderr, "out of memory\n"); |
636 |
|
|
exit(1); |
637 |
|
|
} |
638 |
|
|
memset(extsyms, 0, iextMax * sizeof(struct ecoff_extsym)); |
639 |
|
|
fseek(f, cbExtOffset, SEEK_SET); |
640 |
|
|
fread(extsyms, 1, iextMax * sizeof(struct ecoff_extsym), f); |
641 |
|
|
|
642 |
|
|
/* Unencode the strindex and value first: */ |
643 |
|
|
for (sym_nr=0; sym_nr<nsymbols; sym_nr++) { |
644 |
|
|
uint64_t value, strindex; |
645 |
|
|
|
646 |
|
|
unencode(strindex, &extsyms[sym_nr].es_strindex, |
647 |
|
|
uint32_t); |
648 |
|
|
unencode(value, &extsyms[sym_nr].es_value, uint32_t); |
649 |
|
|
|
650 |
|
|
extsyms[sym_nr].es_strindex = strindex; |
651 |
|
|
extsyms[sym_nr].es_value = value; |
652 |
|
|
} |
653 |
|
|
|
654 |
|
|
for (sym_nr=0; sym_nr<nsymbols; sym_nr++) { |
655 |
|
|
/* debug("symbol%6i: 0x%08x = %s\n", |
656 |
|
|
sym_nr, (int)extsyms[sym_nr].es_value, |
657 |
|
|
symbol_data + extsyms[sym_nr].es_strindex); */ |
658 |
|
|
|
659 |
|
|
add_symbol_name(&m->symbol_context, |
660 |
|
|
extsyms[sym_nr].es_value, 0, |
661 |
|
|
symbol_data + extsyms[sym_nr].es_strindex, 0); |
662 |
|
|
} |
663 |
|
|
|
664 |
|
|
free(extsyms); |
665 |
|
|
free(symbol_data); |
666 |
|
|
|
667 |
|
|
skip_normal_coff_symbols: |
668 |
|
|
; |
669 |
|
|
} |
670 |
|
|
|
671 |
|
|
fclose(f); |
672 |
|
|
|
673 |
|
|
*entrypointp = a_entry; |
674 |
|
|
*gpp = a_gp; |
675 |
|
|
m->file_loaded_end_addr = end_addr; |
676 |
|
|
|
677 |
|
|
if (program_byte_order != -1) |
678 |
|
|
encoding = program_byte_order; |
679 |
|
|
|
680 |
|
|
if (encoding == ELFDATA2LSB) |
681 |
|
|
*byte_orderp = EMUL_LITTLE_ENDIAN; |
682 |
|
|
else |
683 |
|
|
*byte_orderp = EMUL_BIG_ENDIAN; |
684 |
|
|
|
685 |
|
|
n_executables_loaded ++; |
686 |
|
|
} |
687 |
|
|
|
688 |
|
|
|
689 |
|
|
/* |
690 |
|
|
* file_load_srec(): |
691 |
|
|
* |
692 |
|
|
* Loads a Motorola SREC file into emulated memory. Description of the SREC |
693 |
|
|
* file format can be found at here: |
694 |
|
|
* |
695 |
|
|
* http://www.ndsu.nodak.edu/instruct/tareski/373f98/notes/srecord.htm |
696 |
|
|
* or http://www.amelek.gda.pl/avr/uisp/srecord.htm |
697 |
|
|
*/ |
698 |
|
|
static void file_load_srec(struct machine *m, struct memory *mem, |
699 |
|
|
char *filename, uint64_t *entrypointp) |
700 |
|
|
{ |
701 |
|
|
FILE *f; |
702 |
|
|
unsigned char buf[516]; |
703 |
|
|
unsigned char bytes[270]; |
704 |
|
|
uint64_t entry = 0, vaddr = 0; |
705 |
|
|
int i, j, count; |
706 |
|
|
char ch; |
707 |
|
|
int buf_len, data_start = 0; |
708 |
|
|
int entry_set = 0; |
709 |
|
|
int warning = 0; |
710 |
|
|
int warning_len = 0; |
711 |
|
|
int total_bytes_loaded = 0; |
712 |
|
|
|
713 |
|
|
f = fopen(filename, "r"); |
714 |
|
|
if (f == NULL) { |
715 |
|
|
perror(filename); |
716 |
|
|
exit(1); |
717 |
|
|
} |
718 |
|
|
|
719 |
|
|
/* Load file contents: */ |
720 |
|
|
while (!feof(f)) { |
721 |
|
|
memset(buf, 0, sizeof(buf)); |
722 |
|
|
fgets((char *)buf, sizeof(buf)-1, f); |
723 |
|
|
|
724 |
|
|
if (buf[0] == 0 || buf[0]=='\r' || buf[0]=='\n') |
725 |
|
|
continue; |
726 |
|
|
|
727 |
|
|
if (buf[0] != 'S') { |
728 |
|
|
if (!warning) |
729 |
|
|
debug("WARNING! non-S-record found\n"); |
730 |
|
|
warning = 1; |
731 |
|
|
continue; |
732 |
|
|
} |
733 |
|
|
|
734 |
|
|
buf_len = strlen((char *)buf); |
735 |
|
|
|
736 |
|
|
if (buf_len < 10) { |
737 |
|
|
if (!warning_len) |
738 |
|
|
debug("WARNING! invalid S-record found\n"); |
739 |
|
|
warning_len = 1; |
740 |
|
|
continue; |
741 |
|
|
} |
742 |
|
|
|
743 |
|
|
/* |
744 |
|
|
* Stype count address data checksum |
745 |
|
|
* 01 23 4.. .. (last 2 bytes) |
746 |
|
|
* |
747 |
|
|
* TODO: actually check the checksum |
748 |
|
|
*/ |
749 |
|
|
|
750 |
|
|
j = 0; |
751 |
|
|
for (i=1; i<buf_len; i++) { |
752 |
|
|
if (buf[i]>='a' && buf[i]<='f') |
753 |
|
|
buf[i] += 10 - 'a'; |
754 |
|
|
else if (buf[i] >= 'A' && buf[i] <= 'F') |
755 |
|
|
buf[i] += 10 - 'A'; |
756 |
|
|
else if (buf[i] >= '0' && buf[i] <= '9') |
757 |
|
|
buf[i] -= '0'; |
758 |
|
|
else if (buf[i] == '\r' || buf[i] == '\n') { |
759 |
|
|
} else |
760 |
|
|
fatal("invalid characters '%c' in S-record\n", |
761 |
|
|
buf[i]); |
762 |
|
|
|
763 |
|
|
if (i >= 4) { |
764 |
|
|
if (i & 1) |
765 |
|
|
bytes[j++] += buf[i]; |
766 |
|
|
else |
767 |
|
|
bytes[j] = buf[i] * 16; |
768 |
|
|
} |
769 |
|
|
} |
770 |
|
|
|
771 |
|
|
count = buf[2] * 16 + buf[3]; |
772 |
|
|
/* debug("count=%i j=%i\n", count, j); */ |
773 |
|
|
/* count is j - 1. */ |
774 |
|
|
|
775 |
|
|
switch (buf[1]) { |
776 |
|
|
case 0: |
777 |
|
|
debug("SREC \""); |
778 |
|
|
for (i=2; i<count-1; i++) { |
779 |
|
|
ch = bytes[i]; |
780 |
|
|
if (ch >= ' ' && ch < 127) |
781 |
|
|
debug("%c", ch); |
782 |
|
|
else |
783 |
|
|
debug("?"); |
784 |
|
|
} |
785 |
|
|
debug("\"\n"); |
786 |
|
|
break; |
787 |
|
|
case 1: |
788 |
|
|
case 2: |
789 |
|
|
case 3: |
790 |
|
|
/* switch again, to get the load address: */ |
791 |
|
|
switch (buf[1]) { |
792 |
|
|
case 1: data_start = 2; |
793 |
|
|
vaddr = (bytes[0] << 8) + bytes[1]; |
794 |
|
|
break; |
795 |
|
|
case 2: data_start = 3; |
796 |
|
|
vaddr = (bytes[0] << 16) + (bytes[1] << 8) + |
797 |
|
|
bytes[2]; |
798 |
|
|
break; |
799 |
|
|
case 3: data_start = 4; |
800 |
|
|
vaddr = (bytes[0] << 24) + (bytes[1] << 16) + |
801 |
|
|
(bytes[2] << 8) + bytes[3]; |
802 |
|
|
} |
803 |
|
|
m->cpus[0]->memory_rw(m->cpus[0], mem, vaddr, |
804 |
|
|
&bytes[data_start], count - 1 - data_start, |
805 |
|
|
MEM_WRITE, NO_EXCEPTIONS); |
806 |
|
|
total_bytes_loaded += count - 1 - data_start; |
807 |
|
|
break; |
808 |
|
|
case 7: |
809 |
|
|
case 8: |
810 |
|
|
case 9: |
811 |
|
|
/* switch again, to get the entry point: */ |
812 |
|
|
switch (buf[1]) { |
813 |
|
|
case 7: entry = (bytes[0] << 24) + (bytes[1] << 16) + |
814 |
|
|
(bytes[2] << 8) + bytes[3]; |
815 |
|
|
break; |
816 |
|
|
case 8: entry = (bytes[0] << 16) + (bytes[1] << 8) + |
817 |
|
|
bytes[2]; |
818 |
|
|
break; |
819 |
|
|
case 9: entry = (bytes[0] << 8) + bytes[1]; |
820 |
|
|
break; |
821 |
|
|
} |
822 |
|
|
entry_set = 1; |
823 |
|
|
debug("entry point 0x%08x\n", (unsigned int)entry); |
824 |
|
|
break; |
825 |
|
|
default: |
826 |
|
|
debug("unimplemented S-record type %i\n", buf[1]); |
827 |
|
|
} |
828 |
|
|
} |
829 |
|
|
|
830 |
|
|
debug("0x%x bytes loaded\n", total_bytes_loaded); |
831 |
|
|
|
832 |
|
|
fclose(f); |
833 |
|
|
|
834 |
|
|
if (!entry_set) |
835 |
|
|
debug("WARNING! no entrypoint found!\n"); |
836 |
|
|
else |
837 |
|
|
*entrypointp = entry; |
838 |
|
|
|
839 |
|
|
n_executables_loaded ++; |
840 |
|
|
} |
841 |
|
|
|
842 |
|
|
|
843 |
|
|
/* |
844 |
|
|
* file_load_raw(): |
845 |
|
|
* |
846 |
|
|
* Loads a raw binary into emulated memory. The filename should be |
847 |
|
|
* of the following form: loadaddress:filename |
848 |
|
|
* or loadaddress:skiplen:filename |
849 |
|
|
* or loadaddress:skiplen:pc:filename |
850 |
|
|
*/ |
851 |
|
|
static void file_load_raw(struct machine *m, struct memory *mem, |
852 |
|
|
char *filename, uint64_t *entrypointp) |
853 |
|
|
{ |
854 |
|
|
FILE *f; |
855 |
|
|
int len; |
856 |
|
|
unsigned char buf[4096]; |
857 |
|
|
uint64_t entry, loadaddr, vaddr, skip = 0; |
858 |
|
|
char *p, *p2; |
859 |
|
|
|
860 |
|
|
p = strchr(filename, ':'); |
861 |
|
|
if (p == NULL) { |
862 |
|
|
fprintf(stderr, "\n"); |
863 |
|
|
perror(filename); |
864 |
|
|
exit(1); |
865 |
|
|
} |
866 |
|
|
|
867 |
|
|
loadaddr = vaddr = entry = strtoull(filename, NULL, 0); |
868 |
|
|
p2 = p+1; |
869 |
|
|
|
870 |
|
|
/* A second value? That's the optional skip value */ |
871 |
|
|
p = strchr(p2, ':'); |
872 |
|
|
if (p != NULL) { |
873 |
|
|
skip = strtoull(p2, NULL, 0); |
874 |
|
|
p = p+1; |
875 |
|
|
/* A third value? That's the initial pc: */ |
876 |
|
|
if (strchr(p, ':') != NULL) { |
877 |
|
|
entry = strtoull(p, NULL, 0); |
878 |
|
|
p = strchr(p, ':') + 1; |
879 |
|
|
} |
880 |
|
|
} else |
881 |
|
|
p = p2; |
882 |
|
|
|
883 |
|
|
f = fopen(strrchr(filename, ':')+1, "r"); |
884 |
|
|
if (f == NULL) { |
885 |
|
|
perror(p); |
886 |
|
|
exit(1); |
887 |
|
|
} |
888 |
|
|
|
889 |
|
|
fseek(f, skip, SEEK_SET); |
890 |
|
|
|
891 |
|
|
/* Load file contents: */ |
892 |
|
|
while (!feof(f)) { |
893 |
|
|
len = fread(buf, 1, sizeof(buf), f); |
894 |
|
|
|
895 |
|
|
if (len > 0) |
896 |
|
|
m->cpus[0]->memory_rw(m->cpus[0], mem, vaddr, &buf[0], |
897 |
|
|
len, MEM_WRITE, NO_EXCEPTIONS); |
898 |
|
|
|
899 |
|
|
vaddr += len; |
900 |
|
|
} |
901 |
|
|
|
902 |
|
|
debug("RAW: 0x%llx bytes @ 0x%08llx", |
903 |
|
|
(long long) (ftell(f) - skip), (long long)loadaddr); |
904 |
|
|
if (skip != 0) |
905 |
|
|
debug(" (0x%llx bytes of header skipped)", (long long)skip); |
906 |
|
|
debug("\n"); |
907 |
|
|
|
908 |
|
|
fclose(f); |
909 |
|
|
|
910 |
|
|
*entrypointp = entry; |
911 |
|
|
|
912 |
|
|
n_executables_loaded ++; |
913 |
|
|
} |
914 |
|
|
|
915 |
|
|
|
916 |
|
|
/* |
917 |
|
|
* file_load_elf(): |
918 |
|
|
* |
919 |
|
|
* Loads an ELF image into the emulated memory. The entry point (read from |
920 |
|
|
* the ELF header) and the initial value of the gp register (read from the |
921 |
|
|
* ELF symbol table) are stored in the specified CPU's registers. |
922 |
|
|
* |
923 |
|
|
* This is pretty heavy stuff, but is needed because of the heaviness of |
924 |
|
|
* ELF files. :-/ Hopefully it will be able to recognize most valid ELFs. |
925 |
|
|
*/ |
926 |
|
|
static void file_load_elf(struct machine *m, struct memory *mem, |
927 |
|
|
char *filename, uint64_t *entrypointp, int arch, uint64_t *gpp, |
928 |
|
|
int *byte_order, uint64_t *tocp) |
929 |
|
|
{ |
930 |
|
|
Elf32_Ehdr hdr32; |
931 |
|
|
Elf64_Ehdr hdr64; |
932 |
|
|
FILE *f; |
933 |
|
|
uint64_t eentry; |
934 |
|
|
int len, i, ok; |
935 |
|
|
int elf64, encoding, eflags; |
936 |
|
|
int etype, emachine; |
937 |
|
|
int ephnum, ephentsize, eshnum, eshentsize; |
938 |
|
|
off_t ephoff, eshoff; |
939 |
|
|
Elf32_Phdr phdr32; |
940 |
|
|
Elf64_Phdr phdr64; |
941 |
|
|
Elf32_Shdr shdr32; |
942 |
|
|
Elf64_Shdr shdr64; |
943 |
|
|
Elf32_Sym sym32; |
944 |
|
|
Elf64_Sym sym64; |
945 |
|
|
int ofs; |
946 |
|
|
int chunk_len = 1024, align_len; |
947 |
|
|
char *symbol_strings = NULL; size_t symbol_length = 0; |
948 |
|
|
char *s; |
949 |
|
|
Elf32_Sym *symbols_sym32 = NULL; int n_symbols = 0; |
950 |
|
|
Elf64_Sym *symbols_sym64 = NULL; |
951 |
|
|
|
952 |
|
|
f = fopen(filename, "r"); |
953 |
|
|
if (f == NULL) { |
954 |
|
|
perror(filename); |
955 |
|
|
exit(1); |
956 |
|
|
} |
957 |
|
|
|
958 |
|
|
len = fread(&hdr32, 1, sizeof(Elf32_Ehdr), f); |
959 |
|
|
if (len < (signed int)sizeof(Elf32_Ehdr)) { |
960 |
|
|
fprintf(stderr, "%s: not an ELF file image\n", filename); |
961 |
|
|
exit(1); |
962 |
|
|
} |
963 |
|
|
|
964 |
|
|
if (memcmp(&hdr32.e_ident[EI_MAG0], ELFMAG, SELFMAG) != 0) { |
965 |
|
|
fprintf(stderr, "%s: not an ELF file image\n", filename); |
966 |
|
|
exit(1); |
967 |
|
|
} |
968 |
|
|
|
969 |
|
|
switch (hdr32.e_ident[EI_CLASS]) { |
970 |
|
|
case ELFCLASS32: |
971 |
|
|
elf64 = 0; |
972 |
|
|
break; |
973 |
|
|
case ELFCLASS64: |
974 |
|
|
elf64 = 1; |
975 |
|
|
fseek(f, 0, SEEK_SET); |
976 |
|
|
len = fread(&hdr64, 1, sizeof(Elf64_Ehdr), f); |
977 |
|
|
if (len < (signed int)sizeof(Elf64_Ehdr)) { |
978 |
|
|
fprintf(stderr, "%s: not an ELF64 file image\n", |
979 |
|
|
filename); |
980 |
|
|
exit(1); |
981 |
|
|
} |
982 |
|
|
break; |
983 |
|
|
default: |
984 |
|
|
fprintf(stderr, "%s: unknown ELF class '%i'\n", |
985 |
|
|
filename, hdr32.e_ident[EI_CLASS]); |
986 |
|
|
exit(1); |
987 |
|
|
} |
988 |
|
|
|
989 |
|
|
encoding = hdr32.e_ident[EI_DATA]; |
990 |
|
|
if (encoding != ELFDATA2LSB && encoding != ELFDATA2MSB) { |
991 |
|
|
fprintf(stderr, "%s: unknown data encoding '%i'\n", |
992 |
|
|
filename, hdr32.e_ident[EI_DATA]); |
993 |
|
|
exit(1); |
994 |
|
|
} |
995 |
|
|
|
996 |
|
|
if (elf64) { |
997 |
|
|
unencode(etype, &hdr64.e_type, Elf64_Quarter); |
998 |
|
|
unencode(eflags, &hdr64.e_flags, Elf64_Half); |
999 |
|
|
unencode(emachine, &hdr64.e_machine, Elf64_Quarter); |
1000 |
|
|
unencode(eentry, &hdr64.e_entry, Elf64_Addr); |
1001 |
|
|
unencode(ephnum, &hdr64.e_phnum, Elf64_Quarter); |
1002 |
|
|
unencode(ephentsize, &hdr64.e_phentsize, Elf64_Quarter); |
1003 |
|
|
unencode(ephoff, &hdr64.e_phoff, Elf64_Off); |
1004 |
|
|
unencode(eshnum, &hdr64.e_shnum, Elf64_Quarter); |
1005 |
|
|
unencode(eshentsize, &hdr64.e_shentsize, Elf64_Quarter); |
1006 |
|
|
unencode(eshoff, &hdr64.e_shoff, Elf64_Off); |
1007 |
|
|
if (ephentsize != sizeof(Elf64_Phdr)) { |
1008 |
|
|
fprintf(stderr, "%s: incorrect phentsize? %i, should " |
1009 |
dpavlin |
6 |
"be %i\nPerhaps this is a dynamically linked " |
1010 |
|
|
"binary (which isn't supported yet).\n", filename, |
1011 |
|
|
(int)ephentsize, (int)sizeof(Elf64_Phdr)); |
1012 |
dpavlin |
2 |
exit(1); |
1013 |
|
|
} |
1014 |
|
|
if (eshentsize != sizeof(Elf64_Shdr)) { |
1015 |
dpavlin |
6 |
fprintf(stderr, "%s: incorrect shentsize? %i, should " |
1016 |
|
|
"be %i\nPerhaps this is a dynamically linked " |
1017 |
|
|
"binary (which isn't supported yet).\n", filename, |
1018 |
|
|
(int)eshentsize, (int)sizeof(Elf64_Shdr)); |
1019 |
dpavlin |
2 |
exit(1); |
1020 |
|
|
} |
1021 |
|
|
} else { |
1022 |
|
|
unencode(etype, &hdr32.e_type, Elf32_Half); |
1023 |
|
|
unencode(eflags, &hdr32.e_flags, Elf32_Word); |
1024 |
|
|
unencode(emachine, &hdr32.e_machine, Elf32_Half); |
1025 |
|
|
unencode(eentry, &hdr32.e_entry, Elf32_Addr); |
1026 |
|
|
unencode(ephnum, &hdr32.e_phnum, Elf32_Half); |
1027 |
|
|
unencode(ephentsize, &hdr32.e_phentsize, Elf32_Half); |
1028 |
|
|
unencode(ephoff, &hdr32.e_phoff, Elf32_Off); |
1029 |
|
|
unencode(eshnum, &hdr32.e_shnum, Elf32_Half); |
1030 |
|
|
unencode(eshentsize, &hdr32.e_shentsize, Elf32_Half); |
1031 |
|
|
unencode(eshoff, &hdr32.e_shoff, Elf32_Off); |
1032 |
|
|
if (ephentsize != sizeof(Elf32_Phdr)) { |
1033 |
|
|
fprintf(stderr, "%s: incorrect phentsize? %i, should " |
1034 |
dpavlin |
6 |
"be %i\nPerhaps this is a dynamically linked " |
1035 |
|
|
"binary (which isn't supported yet).\n", filename, |
1036 |
|
|
(int)ephentsize, (int)sizeof(Elf32_Phdr)); |
1037 |
dpavlin |
2 |
exit(1); |
1038 |
|
|
} |
1039 |
|
|
if (eshentsize != sizeof(Elf32_Shdr)) { |
1040 |
dpavlin |
6 |
fprintf(stderr, "%s: incorrect shentsize? %i, should " |
1041 |
|
|
"be %i\nPerhaps this is a dynamically linked " |
1042 |
|
|
"binary (which isn't supported yet).\n", filename, |
1043 |
|
|
(int)eshentsize, (int)sizeof(Elf32_Shdr)); |
1044 |
dpavlin |
2 |
exit(1); |
1045 |
|
|
} |
1046 |
|
|
} |
1047 |
|
|
|
1048 |
|
|
if ( etype != ET_EXEC ) { |
1049 |
|
|
fprintf(stderr, "%s is not an ELF Executable file, type = %i\n", |
1050 |
|
|
filename, etype); |
1051 |
|
|
exit(1); |
1052 |
|
|
} |
1053 |
|
|
|
1054 |
|
|
ok = 0; |
1055 |
|
|
switch (arch) { |
1056 |
dpavlin |
4 |
case ARCH_ALPHA: |
1057 |
|
|
switch (emachine) { |
1058 |
|
|
case EM_ALPHA: |
1059 |
|
|
case -28634: |
1060 |
|
|
ok = 1; |
1061 |
|
|
} |
1062 |
|
|
break; |
1063 |
|
|
case ARCH_HPPA: |
1064 |
|
|
switch (emachine) { |
1065 |
|
|
case EM_PARISC: |
1066 |
|
|
ok = 1; |
1067 |
|
|
} |
1068 |
|
|
break; |
1069 |
dpavlin |
2 |
case ARCH_MIPS: |
1070 |
|
|
switch (emachine) { |
1071 |
|
|
case EM_MIPS: |
1072 |
|
|
case EM_MIPS_RS3_LE: |
1073 |
|
|
ok = 1; |
1074 |
|
|
} |
1075 |
|
|
break; |
1076 |
|
|
case ARCH_PPC: |
1077 |
|
|
switch (emachine) { |
1078 |
|
|
case EM_PPC: |
1079 |
|
|
case EM_PPC64: |
1080 |
|
|
ok = 1; |
1081 |
|
|
} |
1082 |
|
|
break; |
1083 |
|
|
case ARCH_SPARC: |
1084 |
|
|
switch (emachine) { |
1085 |
|
|
case EM_SPARC: |
1086 |
|
|
case EM_SPARCV9: |
1087 |
|
|
ok = 1; |
1088 |
|
|
} |
1089 |
|
|
break; |
1090 |
dpavlin |
4 |
case ARCH_X86: |
1091 |
dpavlin |
2 |
switch (emachine) { |
1092 |
dpavlin |
4 |
case EM_386: |
1093 |
|
|
case EM_486: |
1094 |
dpavlin |
6 |
*tocp = 1; |
1095 |
dpavlin |
2 |
ok = 1; |
1096 |
dpavlin |
4 |
break; |
1097 |
|
|
case EM_AMD64: |
1098 |
dpavlin |
6 |
*tocp = 2; |
1099 |
dpavlin |
2 |
ok = 1; |
1100 |
dpavlin |
4 |
break; |
1101 |
dpavlin |
2 |
} |
1102 |
|
|
break; |
1103 |
dpavlin |
6 |
case ARCH_ARM: |
1104 |
|
|
switch (emachine) { |
1105 |
|
|
case EM_ARM: |
1106 |
|
|
ok = 1; |
1107 |
|
|
} |
1108 |
|
|
break; |
1109 |
dpavlin |
2 |
default: |
1110 |
|
|
fatal("file.c: INTERNAL ERROR: Unimplemented arch!\n"); |
1111 |
|
|
} |
1112 |
|
|
if (!ok) { |
1113 |
|
|
fprintf(stderr, "%s: this is a ", filename); |
1114 |
|
|
if (emachine >= 0 && emachine < N_ELF_MACHINE_TYPES) |
1115 |
|
|
fprintf(stderr, elf_machine_type[emachine]); |
1116 |
|
|
else |
1117 |
|
|
fprintf(stderr, "machine type '%i'", emachine); |
1118 |
|
|
fprintf(stderr, " ELF binary!\n"); |
1119 |
|
|
exit(1); |
1120 |
|
|
} |
1121 |
|
|
|
1122 |
|
|
s = "entry point"; |
1123 |
|
|
if (elf64 && arch == ARCH_PPC) |
1124 |
|
|
s = "function descriptor at"; |
1125 |
|
|
|
1126 |
|
|
debug("ELF%i %s, %s 0x", elf64? 64 : 32, |
1127 |
|
|
encoding == ELFDATA2LSB? "LSB (LE)" : "MSB (BE)", s); |
1128 |
|
|
|
1129 |
|
|
if (elf64) |
1130 |
|
|
debug("%016llx\n", (long long)eentry); |
1131 |
|
|
else |
1132 |
|
|
debug("%08x\n", (int)eentry); |
1133 |
|
|
|
1134 |
|
|
/* |
1135 |
|
|
* MIPS16 encoding? |
1136 |
|
|
* |
1137 |
|
|
* TODO: Find out what e_flag actually contains. |
1138 |
|
|
* TODO 2: This only sets mips16 for cpu 0. Yuck. Fix this! |
1139 |
|
|
*/ |
1140 |
|
|
|
1141 |
|
|
if (((eflags >> 24) & 0xff) == 0x24) { |
1142 |
|
|
debug("MIPS16 encoding (e_flags = 0x%08x)\n", eflags); |
1143 |
|
|
#ifdef ENABLE_MIPS16 |
1144 |
|
|
m->cpus[0]->cd.mips.mips16 = 1; |
1145 |
|
|
#else |
1146 |
|
|
fatal("ENABLE_MIPS16 must be defined in misc.h.\n" |
1147 |
|
|
"(or use the --mips16 configure option)\n"); |
1148 |
|
|
exit(1); |
1149 |
|
|
#endif |
1150 |
|
|
} else if (eentry & 0x3) { |
1151 |
|
|
debug("MIPS16 encoding (eentry not 32-bit aligned)\n"); |
1152 |
|
|
#ifdef ENABLE_MIPS16 |
1153 |
|
|
m->cpus[0]->cd.mips.mips16 = 1; |
1154 |
|
|
#else |
1155 |
|
|
fatal("ENABLE_MIPS16 must be defined in misc.h.\n" |
1156 |
|
|
"(or use the --mips16 configure option)\n"); |
1157 |
|
|
exit(1); |
1158 |
|
|
#endif |
1159 |
|
|
} |
1160 |
|
|
|
1161 |
|
|
/* Read the program headers: */ |
1162 |
|
|
|
1163 |
|
|
for (i=0; i<ephnum; i++) { |
1164 |
|
|
int p_type; |
1165 |
|
|
uint64_t p_offset; |
1166 |
|
|
uint64_t p_vaddr; |
1167 |
|
|
uint64_t p_paddr; |
1168 |
|
|
uint64_t p_filesz; |
1169 |
|
|
uint64_t p_memsz; |
1170 |
|
|
int p_flags; |
1171 |
|
|
int p_align; |
1172 |
|
|
|
1173 |
|
|
fseek(f, ephoff + i * ephentsize, SEEK_SET); |
1174 |
|
|
|
1175 |
|
|
if (elf64) { |
1176 |
|
|
fread(&phdr64, 1, sizeof(Elf64_Phdr), f); |
1177 |
|
|
unencode(p_type, &phdr64.p_type, Elf64_Half); |
1178 |
|
|
unencode(p_flags, &phdr64.p_flags, Elf64_Half); |
1179 |
|
|
unencode(p_offset, &phdr64.p_offset, Elf64_Off); |
1180 |
|
|
unencode(p_vaddr, &phdr64.p_vaddr, Elf64_Addr); |
1181 |
|
|
unencode(p_paddr, &phdr64.p_paddr, Elf64_Addr); |
1182 |
|
|
unencode(p_filesz, &phdr64.p_filesz, Elf64_Xword); |
1183 |
|
|
unencode(p_memsz, &phdr64.p_memsz, Elf64_Xword); |
1184 |
|
|
unencode(p_align, &phdr64.p_align, Elf64_Xword); |
1185 |
|
|
} else { |
1186 |
|
|
fread(&phdr32, 1, sizeof(Elf32_Phdr), f); |
1187 |
|
|
unencode(p_type, &phdr32.p_type, Elf32_Word); |
1188 |
|
|
unencode(p_offset, &phdr32.p_offset, Elf32_Off); |
1189 |
|
|
unencode(p_vaddr, &phdr32.p_vaddr, Elf32_Addr); |
1190 |
|
|
unencode(p_paddr, &phdr32.p_paddr, Elf32_Addr); |
1191 |
|
|
unencode(p_filesz, &phdr32.p_filesz, Elf32_Word); |
1192 |
|
|
unencode(p_memsz, &phdr32.p_memsz, Elf32_Word); |
1193 |
|
|
unencode(p_flags, &phdr32.p_flags, Elf32_Word); |
1194 |
|
|
unencode(p_align, &phdr32.p_align, Elf32_Word); |
1195 |
|
|
} |
1196 |
|
|
|
1197 |
|
|
if (p_memsz != 0 && (p_type == PT_LOAD || |
1198 |
|
|
(p_type & PF_MASKPROC) == PT_MIPS_REGINFO)) { |
1199 |
|
|
debug("chunk %i (", i); |
1200 |
|
|
if (p_type == PT_LOAD) |
1201 |
|
|
debug("load"); |
1202 |
|
|
else |
1203 |
|
|
debug("0x%08x", (int)p_type); |
1204 |
|
|
|
1205 |
|
|
debug(") @ 0x%llx, vaddr 0x", (long long)p_offset); |
1206 |
|
|
|
1207 |
|
|
if (elf64) |
1208 |
|
|
debug("%016llx", (long long)p_vaddr); |
1209 |
|
|
else |
1210 |
|
|
debug("%08x", (int)p_vaddr); |
1211 |
|
|
|
1212 |
|
|
debug(" len=0x%llx\n", (long long)p_memsz); |
1213 |
|
|
|
1214 |
|
|
if (p_vaddr != p_paddr) { |
1215 |
|
|
fprintf(stderr, "%s: vaddr != paddr. TODO: " |
1216 |
|
|
"how to handle this? vaddr=%016llx paddr" |
1217 |
|
|
"=%016llx\n", filename, (long long)p_vaddr, |
1218 |
|
|
(long long)p_paddr); |
1219 |
|
|
exit(1); |
1220 |
|
|
} |
1221 |
|
|
|
1222 |
|
|
if (p_memsz < p_filesz) { |
1223 |
|
|
fprintf(stderr, "%s: memsz < filesz. TODO: how" |
1224 |
|
|
" to handle this? memsz=%016llx filesz=" |
1225 |
|
|
"%016llx\n", filename, (long long)p_memsz, |
1226 |
|
|
(long long)p_filesz); |
1227 |
|
|
exit(1); |
1228 |
|
|
} |
1229 |
|
|
|
1230 |
|
|
fseek(f, p_offset, SEEK_SET); |
1231 |
|
|
align_len = 1; |
1232 |
|
|
if ((p_vaddr & 0xf)==0) align_len = 0x10; |
1233 |
|
|
if ((p_vaddr & 0x3f)==0) align_len = 0x40; |
1234 |
|
|
if ((p_vaddr & 0xff)==0) align_len = 0x100; |
1235 |
|
|
if ((p_vaddr & 0xfff)==0) align_len = 0x1000; |
1236 |
|
|
if ((p_vaddr & 0x3fff)==0) align_len = 0x4000; |
1237 |
|
|
if ((p_vaddr & 0xffff)==0) align_len = 0x10000; |
1238 |
|
|
ofs = 0; len = chunk_len = align_len; |
1239 |
|
|
while (ofs < (int64_t)p_filesz && len==chunk_len) { |
1240 |
|
|
unsigned char *ch = malloc(chunk_len); |
1241 |
|
|
int i = 0; |
1242 |
|
|
|
1243 |
|
|
/* Switch to larger size, if possible: */ |
1244 |
|
|
if (align_len < 0x10000 && |
1245 |
|
|
((p_vaddr + ofs) & 0xffff)==0) { |
1246 |
|
|
align_len = 0x10000; |
1247 |
|
|
len = chunk_len = align_len; |
1248 |
|
|
free(ch); |
1249 |
|
|
ch = malloc(chunk_len); |
1250 |
|
|
} else if (align_len < 0x1000 && |
1251 |
|
|
((p_vaddr + ofs) & 0xfff)==0) { |
1252 |
|
|
align_len = 0x1000; |
1253 |
|
|
len = chunk_len = align_len; |
1254 |
|
|
free(ch); |
1255 |
|
|
ch = malloc(chunk_len); |
1256 |
|
|
} |
1257 |
|
|
|
1258 |
|
|
if (ch == NULL) { |
1259 |
|
|
fprintf(stderr, "out of memory\n"); |
1260 |
|
|
exit(1); |
1261 |
|
|
} |
1262 |
|
|
|
1263 |
|
|
len = fread(&ch[0], 1, chunk_len, f); |
1264 |
|
|
if (ofs + len > (int64_t)p_filesz) |
1265 |
|
|
len = p_filesz - ofs; |
1266 |
|
|
|
1267 |
|
|
while (i < len) { |
1268 |
|
|
size_t len_to_copy; |
1269 |
|
|
len_to_copy = (i + align_len) <= len? |
1270 |
|
|
align_len : len - i; |
1271 |
|
|
m->cpus[0]->memory_rw(m->cpus[0], mem, |
1272 |
|
|
p_vaddr + ofs, &ch[i], len_to_copy, |
1273 |
|
|
MEM_WRITE, NO_EXCEPTIONS); |
1274 |
|
|
ofs += align_len; |
1275 |
|
|
i += align_len; |
1276 |
|
|
} |
1277 |
|
|
|
1278 |
|
|
free(ch); |
1279 |
|
|
} |
1280 |
|
|
} |
1281 |
|
|
} |
1282 |
|
|
|
1283 |
|
|
/* Read the section headers to find the address of the _gp symbol: */ |
1284 |
|
|
|
1285 |
|
|
for (i=0; i<eshnum; i++) { |
1286 |
|
|
int sh_name, sh_type, sh_flags, sh_link, sh_info, sh_entsize; |
1287 |
|
|
uint64_t sh_addr, sh_size, sh_addralign; |
1288 |
|
|
off_t sh_offset; |
1289 |
|
|
int n_entries; /* for reading the symbol / string tables */ |
1290 |
|
|
|
1291 |
|
|
/* debug("section header %i at %016llx\n", i, |
1292 |
|
|
(long long) eshoff+i*eshentsize); */ |
1293 |
|
|
|
1294 |
|
|
fseek(f, eshoff + i * eshentsize, SEEK_SET); |
1295 |
|
|
|
1296 |
|
|
if (elf64) { |
1297 |
|
|
len = fread(&shdr64, 1, sizeof(Elf64_Shdr), f); |
1298 |
|
|
if (len != sizeof(Elf64_Shdr)) { |
1299 |
|
|
fprintf(stderr, "couldn't read header\n"); |
1300 |
|
|
exit(1); |
1301 |
|
|
} |
1302 |
|
|
unencode(sh_name, &shdr64.sh_name, Elf64_Half); |
1303 |
|
|
unencode(sh_type, &shdr64.sh_type, Elf64_Half); |
1304 |
|
|
unencode(sh_flags, &shdr64.sh_flags, Elf64_Xword); |
1305 |
|
|
unencode(sh_addr, &shdr64.sh_addr, Elf64_Addr); |
1306 |
|
|
unencode(sh_offset, &shdr64.sh_offset, Elf64_Off); |
1307 |
|
|
unencode(sh_size, &shdr64.sh_size, Elf64_Xword); |
1308 |
|
|
unencode(sh_link, &shdr64.sh_link, Elf64_Half); |
1309 |
|
|
unencode(sh_info, &shdr64.sh_info, Elf64_Half); |
1310 |
|
|
unencode(sh_addralign, &shdr64.sh_addralign, |
1311 |
|
|
Elf64_Xword); |
1312 |
|
|
unencode(sh_entsize, &shdr64.sh_entsize, Elf64_Xword); |
1313 |
|
|
} else { |
1314 |
|
|
len = fread(&shdr32, 1, sizeof(Elf32_Shdr), f); |
1315 |
|
|
if (len != sizeof(Elf32_Shdr)) { |
1316 |
|
|
fprintf(stderr, "couldn't read header\n"); |
1317 |
|
|
exit(1); |
1318 |
|
|
} |
1319 |
|
|
unencode(sh_name, &shdr32.sh_name, Elf32_Word); |
1320 |
|
|
unencode(sh_type, &shdr32.sh_type, Elf32_Word); |
1321 |
|
|
unencode(sh_flags, &shdr32.sh_flags, Elf32_Word); |
1322 |
|
|
unencode(sh_addr, &shdr32.sh_addr, Elf32_Addr); |
1323 |
|
|
unencode(sh_offset, &shdr32.sh_offset, Elf32_Off); |
1324 |
|
|
unencode(sh_size, &shdr32.sh_size, Elf32_Word); |
1325 |
|
|
unencode(sh_link, &shdr32.sh_link, Elf32_Word); |
1326 |
|
|
unencode(sh_info, &shdr32.sh_info, Elf32_Word); |
1327 |
|
|
unencode(sh_addralign, &shdr32.sh_addralign,Elf32_Word); |
1328 |
|
|
unencode(sh_entsize, &shdr32.sh_entsize, Elf32_Word); |
1329 |
|
|
} |
1330 |
|
|
|
1331 |
|
|
/* debug("sh_name=%04lx, sh_type=%08lx, sh_flags=%08lx" |
1332 |
|
|
" sh_size=%06lx sh_entsize=%03lx\n", |
1333 |
|
|
(long)sh_name, (long)sh_type, (long)sh_flags, |
1334 |
|
|
(long)sh_size, (long)sh_entsize); */ |
1335 |
|
|
|
1336 |
|
|
/* Perhaps it is bad to reuse sh_entsize like this? TODO */ |
1337 |
|
|
if (elf64) |
1338 |
|
|
sh_entsize = sizeof(Elf64_Sym); |
1339 |
|
|
else |
1340 |
|
|
sh_entsize = sizeof(Elf32_Sym); |
1341 |
|
|
|
1342 |
|
|
if (sh_type == SHT_SYMTAB) { |
1343 |
|
|
size_t len; |
1344 |
|
|
n_entries = sh_size / sh_entsize; |
1345 |
|
|
|
1346 |
|
|
fseek(f, sh_offset, SEEK_SET); |
1347 |
|
|
|
1348 |
|
|
if (elf64) { |
1349 |
|
|
if (symbols_sym64 != NULL) |
1350 |
|
|
free(symbols_sym64); |
1351 |
|
|
symbols_sym64 = malloc(sh_size); |
1352 |
|
|
if (symbols_sym64 == NULL) { |
1353 |
|
|
fprintf(stderr, "out of memory\n"); |
1354 |
|
|
exit(1); |
1355 |
|
|
} |
1356 |
|
|
|
1357 |
|
|
len = fread(symbols_sym64, 1, sh_entsize * |
1358 |
|
|
n_entries, f); |
1359 |
|
|
} else { |
1360 |
|
|
if (symbols_sym32 != NULL) |
1361 |
|
|
free(symbols_sym32); |
1362 |
|
|
symbols_sym32 = malloc(sh_size); |
1363 |
|
|
if (symbols_sym32 == NULL) { |
1364 |
|
|
fprintf(stderr, "out of memory\n"); |
1365 |
|
|
exit(1); |
1366 |
|
|
} |
1367 |
|
|
|
1368 |
|
|
len = fread(symbols_sym32, 1, |
1369 |
|
|
sh_entsize * n_entries, f); |
1370 |
|
|
} |
1371 |
|
|
|
1372 |
|
|
if (len != sh_size) { |
1373 |
|
|
fprintf(stderr, "could not read symbols from " |
1374 |
|
|
"%s\n", filename); |
1375 |
|
|
exit(1); |
1376 |
|
|
} |
1377 |
|
|
|
1378 |
|
|
debug("%i symbol entries at 0x%llx\n", |
1379 |
|
|
(int)n_entries, (long long)sh_offset); |
1380 |
|
|
|
1381 |
|
|
n_symbols = n_entries; |
1382 |
|
|
} |
1383 |
|
|
|
1384 |
|
|
/* |
1385 |
|
|
* TODO: This is incorrect, there may be several strtab |
1386 |
|
|
* sections. |
1387 |
|
|
* |
1388 |
|
|
* For now, the simple/stupid guess that the largest string |
1389 |
|
|
* table is the one to use seems to be good enough. |
1390 |
|
|
*/ |
1391 |
|
|
|
1392 |
|
|
if (sh_type == SHT_STRTAB && sh_size > symbol_length) { |
1393 |
|
|
size_t len; |
1394 |
|
|
|
1395 |
|
|
if (symbol_strings != NULL) |
1396 |
|
|
free(symbol_strings); |
1397 |
|
|
|
1398 |
|
|
symbol_strings = malloc(sh_size + 1); |
1399 |
|
|
if (symbol_strings == NULL) { |
1400 |
|
|
fprintf(stderr, "out of memory\n"); |
1401 |
|
|
exit(1); |
1402 |
|
|
} |
1403 |
|
|
|
1404 |
|
|
fseek(f, sh_offset, SEEK_SET); |
1405 |
|
|
len = fread(symbol_strings, 1, sh_size, f); |
1406 |
|
|
if (len != sh_size) { |
1407 |
|
|
fprintf(stderr, "could not read symbols from " |
1408 |
|
|
"%s\n", filename); |
1409 |
|
|
exit(1); |
1410 |
|
|
} |
1411 |
|
|
|
1412 |
|
|
debug("%i bytes of symbol strings at 0x%llx\n", |
1413 |
|
|
(int)sh_size, (long long)sh_offset); |
1414 |
|
|
|
1415 |
|
|
symbol_strings[sh_size] = '\0'; |
1416 |
|
|
symbol_length = sh_size; |
1417 |
|
|
} |
1418 |
|
|
} |
1419 |
|
|
|
1420 |
|
|
fclose(f); |
1421 |
|
|
|
1422 |
|
|
/* Decode symbols: */ |
1423 |
|
|
if (symbol_strings != NULL) { |
1424 |
|
|
for (i=0; i<n_symbols; i++) { |
1425 |
|
|
uint64_t st_name, addr, size; |
1426 |
|
|
int st_info; |
1427 |
|
|
|
1428 |
|
|
if (elf64) { |
1429 |
|
|
sym64 = symbols_sym64[i]; |
1430 |
|
|
unencode(st_name, &sym64.st_name, Elf64_Half); |
1431 |
|
|
unencode(st_info, &sym64.st_info, Elf_Byte); |
1432 |
|
|
unencode(addr, &sym64.st_value, Elf64_Addr); |
1433 |
|
|
unencode(size, &sym64.st_size, Elf64_Xword); |
1434 |
|
|
} else { |
1435 |
|
|
sym32 = symbols_sym32[i]; |
1436 |
|
|
unencode(st_name, &sym32.st_name, Elf32_Word); |
1437 |
|
|
unencode(st_info, &sym64.st_info, Elf_Byte); |
1438 |
|
|
unencode(addr, &sym32.st_value, Elf32_Word); |
1439 |
|
|
unencode(size, &sym32.st_size, Elf32_Word); |
1440 |
|
|
} |
1441 |
|
|
|
1442 |
|
|
if (size == 0) |
1443 |
|
|
size ++; |
1444 |
|
|
|
1445 |
dpavlin |
6 |
if (addr != 0) /* && ((st_info >> 4) & 0xf) |
1446 |
|
|
>= STB_GLOBAL) */ { |
1447 |
dpavlin |
2 |
/* debug("symbol info=0x%02x addr=0x%016llx" |
1448 |
|
|
" '%s'\n", st_info, (long long)addr, |
1449 |
|
|
symbol_strings + st_name); */ |
1450 |
|
|
add_symbol_name(&m->symbol_context, |
1451 |
|
|
addr, size, symbol_strings + st_name, 0); |
1452 |
|
|
} |
1453 |
|
|
|
1454 |
|
|
if (strcmp(symbol_strings + st_name, "_gp") == 0) { |
1455 |
|
|
debug("found _gp address: 0x"); |
1456 |
|
|
if (elf64) |
1457 |
|
|
debug("%016llx\n", (long long)addr); |
1458 |
|
|
else |
1459 |
|
|
debug("%08x\n", (int)addr); |
1460 |
|
|
*gpp = addr; |
1461 |
|
|
} |
1462 |
|
|
} |
1463 |
|
|
} |
1464 |
|
|
|
1465 |
|
|
*entrypointp = eentry; |
1466 |
|
|
|
1467 |
|
|
if (encoding == ELFDATA2LSB) |
1468 |
|
|
*byte_order = EMUL_LITTLE_ENDIAN; |
1469 |
|
|
else |
1470 |
|
|
*byte_order = EMUL_BIG_ENDIAN; |
1471 |
|
|
|
1472 |
|
|
if (elf64 && arch == ARCH_PPC) { |
1473 |
|
|
/* |
1474 |
|
|
* Special case for 64-bit PPC ELFs: |
1475 |
|
|
* |
1476 |
|
|
* The ELF starting symbol points to a ".opd" section |
1477 |
|
|
* which contains a function descriptor: |
1478 |
|
|
* |
1479 |
|
|
* uint64_t start; |
1480 |
|
|
* uint64_t toc_base; |
1481 |
|
|
* uint64_t something_else; (?) |
1482 |
|
|
*/ |
1483 |
|
|
int res; |
1484 |
|
|
unsigned char b[sizeof(uint64_t)]; |
1485 |
|
|
uint64_t toc_base; |
1486 |
|
|
|
1487 |
|
|
debug("PPC64: "); |
1488 |
|
|
|
1489 |
|
|
res = m->cpus[0]->memory_rw(m->cpus[0], mem, eentry, b, |
1490 |
|
|
sizeof(b), MEM_READ, NO_EXCEPTIONS); |
1491 |
|
|
if (!res) |
1492 |
|
|
debug(" [WARNING: could not read memory?] "); |
1493 |
|
|
|
1494 |
|
|
/* PPC are always big-endian: */ |
1495 |
|
|
*entrypointp = ((uint64_t)b[0] << 56) + |
1496 |
|
|
((uint64_t)b[1] << 48) + ((uint64_t)b[2] << 40) + |
1497 |
|
|
((uint64_t)b[3] << 32) + ((uint64_t)b[4] << 24) + |
1498 |
|
|
((uint64_t)b[5] << 16) + ((uint64_t)b[6] << 8) + |
1499 |
|
|
(uint64_t)b[7]; |
1500 |
|
|
|
1501 |
|
|
res = m->cpus[0]->memory_rw(m->cpus[0], mem, eentry + 8, |
1502 |
|
|
b, sizeof(b), MEM_READ, NO_EXCEPTIONS); |
1503 |
|
|
if (!res) |
1504 |
|
|
fatal(" [WARNING: could not read memory?] "); |
1505 |
|
|
|
1506 |
|
|
toc_base = ((uint64_t)b[0] << 56) + |
1507 |
|
|
((uint64_t)b[1] << 48) + ((uint64_t)b[2] << 40) + |
1508 |
|
|
((uint64_t)b[3] << 32) + ((uint64_t)b[4] << 24) + |
1509 |
|
|
((uint64_t)b[5] << 16) + ((uint64_t)b[6] << 8) + |
1510 |
|
|
(uint64_t)b[7]; |
1511 |
|
|
|
1512 |
|
|
debug("entrypoint 0x%016llx, toc_base 0x%016llx\n", |
1513 |
|
|
(long long)*entrypointp, (long long)toc_base); |
1514 |
|
|
if (tocp != NULL) |
1515 |
|
|
*tocp = toc_base; |
1516 |
|
|
} |
1517 |
|
|
|
1518 |
|
|
n_executables_loaded ++; |
1519 |
|
|
} |
1520 |
|
|
|
1521 |
|
|
|
1522 |
|
|
/* |
1523 |
|
|
* file_n_executables_loaded(): |
1524 |
|
|
* |
1525 |
|
|
* Returns the number of executable files loaded into emulated memory. |
1526 |
|
|
*/ |
1527 |
|
|
int file_n_executables_loaded(void) |
1528 |
|
|
{ |
1529 |
|
|
return n_executables_loaded; |
1530 |
|
|
} |
1531 |
|
|
|
1532 |
|
|
|
1533 |
|
|
/* |
1534 |
|
|
* file_load(): |
1535 |
|
|
* |
1536 |
|
|
* Sense the file format of a file (ELF, a.out, ecoff), and call the |
1537 |
|
|
* right file_load_XXX() function. If the file isn't of a recognized |
1538 |
|
|
* binary format, assume that it contains symbol definitions. |
1539 |
|
|
* |
1540 |
|
|
* If the filename doesn't exist, try to treat the name as |
1541 |
|
|
* "address:filename" and load the file as a raw binary. |
1542 |
|
|
*/ |
1543 |
|
|
void file_load(struct machine *machine, struct memory *mem, |
1544 |
|
|
char *filename, uint64_t *entrypointp, |
1545 |
|
|
int arch, uint64_t *gpp, int *byte_orderp, uint64_t *tocp) |
1546 |
|
|
{ |
1547 |
|
|
int iadd = 4; |
1548 |
|
|
FILE *f; |
1549 |
|
|
unsigned char buf[12]; |
1550 |
dpavlin |
6 |
unsigned char buf2[2]; |
1551 |
|
|
size_t len, len2, i; |
1552 |
dpavlin |
2 |
off_t size; |
1553 |
|
|
|
1554 |
|
|
if (byte_orderp == NULL) { |
1555 |
|
|
fprintf(stderr, "file_load(): byte_order == NULL\n"); |
1556 |
|
|
exit(1); |
1557 |
|
|
} |
1558 |
|
|
|
1559 |
|
|
if (arch == ARCH_NOARCH) { |
1560 |
|
|
fprintf(stderr, "file_load(): FATAL ERROR: no arch?\n"); |
1561 |
|
|
exit(1); |
1562 |
|
|
} |
1563 |
|
|
|
1564 |
|
|
if (mem == NULL || filename == NULL) { |
1565 |
|
|
fprintf(stderr, "file_load(): mem or filename is NULL\n"); |
1566 |
|
|
exit(1); |
1567 |
|
|
} |
1568 |
|
|
|
1569 |
|
|
/* Skip configuration files: */ |
1570 |
|
|
if (filename[0] == '@') |
1571 |
|
|
return; |
1572 |
|
|
|
1573 |
|
|
debug("loading %s:\n", filename); |
1574 |
|
|
debug_indentation(iadd); |
1575 |
|
|
|
1576 |
|
|
f = fopen(filename, "r"); |
1577 |
|
|
if (f == NULL) { |
1578 |
|
|
file_load_raw(machine, mem, filename, entrypointp); |
1579 |
|
|
goto ret; |
1580 |
|
|
} |
1581 |
|
|
|
1582 |
|
|
fseek(f, 0, SEEK_END); |
1583 |
|
|
size = ftell(f); |
1584 |
|
|
fseek(f, 0, SEEK_SET); |
1585 |
|
|
|
1586 |
|
|
memset(buf, 0, sizeof(buf)); |
1587 |
|
|
len = fread(buf, 1, sizeof(buf), f); |
1588 |
dpavlin |
6 |
fseek(f, 510, SEEK_SET); |
1589 |
|
|
len2 = fread(buf2, 1, sizeof(buf2), f); |
1590 |
dpavlin |
2 |
fclose(f); |
1591 |
|
|
|
1592 |
|
|
if (len < (signed int)sizeof(buf)) { |
1593 |
|
|
fprintf(stderr, "\nThis file is too small to contain " |
1594 |
|
|
"anything useful\n"); |
1595 |
|
|
exit(1); |
1596 |
|
|
} |
1597 |
|
|
|
1598 |
|
|
/* Is it an ELF? */ |
1599 |
|
|
if (buf[0] == 0x7f && buf[1]=='E' && buf[2]=='L' && buf[3]=='F') { |
1600 |
|
|
file_load_elf(machine, mem, filename, |
1601 |
|
|
entrypointp, arch, gpp, byte_orderp, tocp); |
1602 |
|
|
goto ret; |
1603 |
|
|
} |
1604 |
|
|
|
1605 |
dpavlin |
6 |
/* Is it an a.out? */ |
1606 |
dpavlin |
2 |
if (buf[0]==0x00 && buf[1]==0x8b && buf[2]==0x01 && buf[3]==0x07) { |
1607 |
dpavlin |
6 |
/* MIPS a.out */ |
1608 |
dpavlin |
2 |
file_load_aout(machine, mem, filename, 0, |
1609 |
|
|
entrypointp, arch, byte_orderp); |
1610 |
|
|
goto ret; |
1611 |
|
|
} |
1612 |
dpavlin |
6 |
if (buf[0]==0x00 && buf[1]==0x86 && buf[2]==0x01 && buf[3]==0x0b) { |
1613 |
|
|
/* i386 a.out (old OpenBSD and NetBSD etc) */ |
1614 |
|
|
file_load_aout(machine, mem, filename, AOUT_FLAG_FROM_BEGINNING, |
1615 |
|
|
entrypointp, arch, byte_orderp); |
1616 |
|
|
goto ret; |
1617 |
|
|
} |
1618 |
dpavlin |
2 |
if (buf[0]==0x00 && buf[2]==0x00 && buf[8]==0x7a && buf[9]==0x75) { |
1619 |
dpavlin |
6 |
/* DEC OSF1 on MIPS: */ |
1620 |
|
|
file_load_aout(machine, mem, filename, AOUT_FLAG_DECOSF1, |
1621 |
dpavlin |
2 |
entrypointp, arch, byte_orderp); |
1622 |
|
|
goto ret; |
1623 |
|
|
} |
1624 |
|
|
|
1625 |
|
|
/* |
1626 |
|
|
* Is it an ecoff? |
1627 |
|
|
* |
1628 |
|
|
* TODO: What's the deal with the magic value's byte order? Sometimes |
1629 |
|
|
* it seems to be reversed for BE when compared to LE, but not always? |
1630 |
|
|
*/ |
1631 |
|
|
if (buf[0]+256*buf[1] == ECOFF_MAGIC_MIPSEB || |
1632 |
|
|
buf[0]+256*buf[1] == ECOFF_MAGIC_MIPSEL || |
1633 |
|
|
buf[0]+256*buf[1] == ECOFF_MAGIC_MIPSEB2 || |
1634 |
|
|
buf[0]+256*buf[1] == ECOFF_MAGIC_MIPSEL2 || |
1635 |
|
|
buf[0]+256*buf[1] == ECOFF_MAGIC_MIPSEB3 || |
1636 |
|
|
buf[0]+256*buf[1] == ECOFF_MAGIC_MIPSEL3 || |
1637 |
|
|
buf[1]+256*buf[0] == ECOFF_MAGIC_MIPSEB || |
1638 |
|
|
buf[1]+256*buf[0] == ECOFF_MAGIC_MIPSEL || |
1639 |
|
|
buf[1]+256*buf[0] == ECOFF_MAGIC_MIPSEB2 || |
1640 |
|
|
buf[1]+256*buf[0] == ECOFF_MAGIC_MIPSEL2 || |
1641 |
|
|
buf[1]+256*buf[0] == ECOFF_MAGIC_MIPSEB3 || |
1642 |
|
|
buf[1]+256*buf[0] == ECOFF_MAGIC_MIPSEL3) { |
1643 |
|
|
file_load_ecoff(machine, mem, filename, entrypointp, |
1644 |
|
|
arch, gpp, byte_orderp); |
1645 |
|
|
goto ret; |
1646 |
|
|
} |
1647 |
|
|
|
1648 |
|
|
/* Is it a Motorola SREC file? */ |
1649 |
|
|
if ((buf[0]=='S' && buf[1]>='0' && buf[1]<='9')) { |
1650 |
|
|
file_load_srec(machine, mem, filename, entrypointp); |
1651 |
|
|
goto ret; |
1652 |
|
|
} |
1653 |
|
|
|
1654 |
|
|
/* gzipped files are not supported: */ |
1655 |
|
|
if (buf[0]==0x1f && buf[1]==0x8b) { |
1656 |
|
|
fprintf(stderr, "\nYou need to gunzip the file before you" |
1657 |
|
|
" try to use it.\n"); |
1658 |
|
|
exit(1); |
1659 |
|
|
} |
1660 |
|
|
|
1661 |
|
|
if (size > 24000000) { |
1662 |
|
|
fprintf(stderr, "\nThis file is very large (%lli bytes)\n", |
1663 |
|
|
(long long)size); |
1664 |
|
|
fprintf(stderr, "Are you sure it is a kernel and not a disk " |
1665 |
dpavlin |
6 |
"image? (Use the -d option.)\n"); |
1666 |
dpavlin |
2 |
exit(1); |
1667 |
|
|
} |
1668 |
|
|
|
1669 |
dpavlin |
4 |
if (size == 1474560) |
1670 |
|
|
fprintf(stderr, "Hm... this file is the size of a 1.44 MB " |
1671 |
|
|
"floppy image. Maybe you forgot the\n-d switch?\n"); |
1672 |
|
|
|
1673 |
dpavlin |
2 |
/* |
1674 |
|
|
* Last resort: symbol definitions from nm (or nm -S): |
1675 |
|
|
* |
1676 |
|
|
* If the buf contains typical 'binary' characters, then print |
1677 |
|
|
* an error message and quit instead of assuming that it is a |
1678 |
|
|
* symbol file. |
1679 |
|
|
*/ |
1680 |
|
|
for (i=0; i<(signed)sizeof(buf); i++) |
1681 |
|
|
if (buf[i] < 32 && buf[i] != '\t' && |
1682 |
|
|
buf[i] != '\n' && buf[i] != '\r' && |
1683 |
|
|
buf[i] != '\f') { |
1684 |
|
|
fprintf(stderr, "\nThe file format of '%s' is " |
1685 |
|
|
"unknown.\n\n ", filename); |
1686 |
|
|
for (i=0; i<(signed)sizeof(buf); i++) |
1687 |
|
|
fprintf(stderr, " %02x", buf[i]); |
1688 |
dpavlin |
6 |
|
1689 |
|
|
if (len2 == 2 && buf2[0] == 0x55 && buf2[1] == 0xaa) |
1690 |
|
|
fprintf(stderr, "\n\nIt has a PC-style " |
1691 |
|
|
"bootsector marker."); |
1692 |
|
|
|
1693 |
dpavlin |
2 |
fprintf(stderr, "\n\nPossible explanations:\n\n" |
1694 |
|
|
" o) If this is a disk image, you forgot '-d' " |
1695 |
|
|
"on the command line.\n" |
1696 |
|
|
" o) This is an unsupported binary format.\n\n"); |
1697 |
|
|
exit(1); |
1698 |
|
|
} |
1699 |
|
|
|
1700 |
|
|
symbol_readfile(&machine->symbol_context, filename); |
1701 |
|
|
|
1702 |
|
|
ret: |
1703 |
|
|
debug_indentation(-iadd); |
1704 |
|
|
} |
1705 |
|
|
|