mirror of
https://github.com/kanjitalk755/macemu.git
synced 2024-05-28 12:41:32 +00:00
3029 lines
90 KiB
C
3029 lines
90 KiB
C
/*
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* Generic Dynamic compiler generator
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*
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* Copyright (c) 2003-2004 Fabrice Bellard
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*
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* The COFF object format support was extracted from Kazu's QEMU port
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* to Win32.
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*
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* Mach-O Support by Matt Reda and Pierre d'Herbemont
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <inttypes.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "sysdeps.h"
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#include "cxxdemangle.h"
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/* object file format defs */
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#ifndef CONFIG_WIN32
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#if defined(__CYGWIN__) || defined(_WIN32)
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#define CONFIG_WIN32 1
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#endif
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#endif
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#ifndef CONFIG_DARWIN
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#if defined(__APPLE__) && defined(__MACH__)
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#define CONFIG_DARWIN 1
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#endif
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#endif
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/* host cpu defs */
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#if CONFIG_WIN32
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#define HOST_I386 1
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#elif defined(__i386__)
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#define HOST_I386 1
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#elif defined(__powerpc__) || defined(__ppc__)
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#define HOST_PPC 1
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#elif defined(__s390__)
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#define HOST_S390 1
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#elif defined(__alpha__)
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#define HOST_ALPHA 1
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#elif defined(__ia64__)
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#define HOST_IA64 1
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#elif defined(__sparc__)
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#define HOST_SPARC 1
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#elif defined(__x86_64__)
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#define HOST_X86_64 1
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#elif defined(__m68k__)
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#define HOST_M68K 1
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#elif defined(__mips__)
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#define HOST_MIPS 1
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#endif
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/* Debug generated code */
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#if ENABLE_MON && (defined(HOST_I386) || defined(HOST_X86_64)) && 0
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#define DYNGEN_PRETTY_PRINT 1
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#include "disass/dis-asm.h"
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static inline bfd_byte bfd_read_byte(bfd_vma from)
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{
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bfd_byte *p = (bfd_byte *)(uintptr_t)from;
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return *p;
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}
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int buffer_read_memory(bfd_vma from, bfd_byte *to, unsigned int length, struct disassemble_info *info)
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{
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while (length--)
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*to++ = bfd_read_byte(from++);
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return 0;
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}
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void perror_memory(int status, bfd_vma memaddr, struct disassemble_info *info)
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{
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info->fprintf_func(info->stream, "Unknown error %d\n", status);
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}
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static uintptr_t print_address_base;
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void generic_print_address(bfd_vma addr, struct disassemble_info *info)
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{
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addr -= print_address_base;
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if (addr >= UVAL64(0x100000000))
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info->fprintf_func(info->stream, "$%08x%08x", (uint32)(addr >> 32), (uint32)addr);
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else
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info->fprintf_func(info->stream, "$%08x", (uint32)addr);
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}
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int generic_symbol_at_address(bfd_vma addr, struct disassemble_info *info)
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{
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return 0;
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}
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struct SFILE {
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char *buffer;
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char *current;
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};
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static int dyngen_sprintf(struct SFILE *f, const char *format, ...)
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{
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int n;
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va_list args;
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va_start(args, format);
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vsprintf(f->current, format, args);
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f->current += n = strlen(f->current);
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va_end(args);
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return n;
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}
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#if defined(HOST_I386) || defined(HOST_X86_64)
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static int pretty_print(char *buf, uintptr_t addr, uintptr_t base)
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{
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disassemble_info info;
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struct SFILE sfile = {buf, buf};
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sfile.buffer = buf;
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sfile.current = buf;
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INIT_DISASSEMBLE_INFO(info, (FILE *)&sfile, (fprintf_ftype)dyngen_sprintf);
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#if defined(HOST_X86_64)
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info.mach = bfd_mach_x86_64;
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#endif
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print_address_base = base;
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return print_insn_i386_att(addr, &info);
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}
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#endif
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#endif
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/* NOTE: we test CONFIG_WIN32 instead of _WIN32 to enabled cross
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compilation */
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#if defined(CONFIG_WIN32)
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#define CONFIG_FORMAT_COFF
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#elif defined(CONFIG_DARWIN)
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#define CONFIG_FORMAT_MACH
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#else
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#define CONFIG_FORMAT_ELF
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#endif
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#ifdef CONFIG_FORMAT_ELF
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/* elf format definitions. We use these macros to test the CPU to
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allow cross compilation (this tool must be ran on the build
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platform) */
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#if defined(HOST_I386)
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_386
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#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) )
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#undef ELF_USES_RELOCA
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#elif defined(HOST_X86_64)
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#define ELF_CLASS ELFCLASS64
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#define ELF_ARCH EM_X86_64
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#define elf_check_arch(x) ((x) == EM_X86_64)
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#define ELF_USES_RELOCA
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#elif defined(HOST_PPC)
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_PPC
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#define elf_check_arch(x) ((x) == EM_PPC)
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#define ELF_USES_RELOCA
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#elif defined(HOST_S390)
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_S390
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#define elf_check_arch(x) ((x) == EM_S390)
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#define ELF_USES_RELOCA
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#elif defined(HOST_ALPHA)
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#define ELF_CLASS ELFCLASS64
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#define ELF_ARCH EM_ALPHA
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#define elf_check_arch(x) ((x) == EM_ALPHA)
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#define ELF_USES_RELOCA
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#elif defined(HOST_IA64)
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#define ELF_CLASS ELFCLASS64
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#define ELF_ARCH EM_IA_64
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#define elf_check_arch(x) ((x) == EM_IA_64)
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#define ELF_USES_RELOCA
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#elif defined(HOST_SPARC)
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_SPARC
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#define elf_check_arch(x) ((x) == EM_SPARC || (x) == EM_SPARC32PLUS)
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#define ELF_USES_RELOCA
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#elif defined(HOST_SPARC64)
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#define ELF_CLASS ELFCLASS64
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#define ELF_ARCH EM_SPARCV9
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#define elf_check_arch(x) ((x) == EM_SPARCV9)
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#define ELF_USES_RELOCA
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#elif defined(HOST_ARM)
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_ARM
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#define elf_check_arch(x) ((x) == EM_ARM)
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#define ELF_USES_RELOC
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#elif defined(HOST_M68K)
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_68K
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#define elf_check_arch(x) ((x) == EM_68K)
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#define ELF_USES_RELOCA
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#elif defined(HOST_MIPS)
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_MIPS
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#define elf_check_arch(x) ((x) == EM_MIPS)
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#define ELF_USES_RELOCA
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#define ELF_USES_ALSO_RELOC
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#else
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#error unsupported CPU - please update the code
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#endif
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#include "elf-defs.h"
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#ifndef ElfW
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# if ELF_CLASS == ELFCLASS32
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# define ElfW(x) Elf32_ ## x
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# define ELFW(x) ELF32_ ## x
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# else
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# define ElfW(x) Elf64_ ## x
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# define ELFW(x) ELF64_ ## x
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# endif
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#endif
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#if ELF_CLASS == ELFCLASS32
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typedef uint32_t host_ulong;
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#define swabls(x) swab32s(x)
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#else
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typedef uint64_t host_ulong;
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#define swabls(x) swab64s(x)
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#endif
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typedef ElfW(Ehdr) elfhdr;
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typedef ElfW(Shdr) elf_shdr;
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typedef ElfW(Phdr) elf_phdr;
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typedef ElfW(Rel) elf_rel;
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typedef ElfW(Rela) elf_rela;
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#ifdef ELF_USES_RELOCA
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#define ELF_RELOC elf_rela
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#define SHT_RELOC SHT_RELA
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#else
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#define ELF_RELOC elf_rel
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#define SHT_RELOC SHT_REL
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#endif
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#define EXE_RELOC ELF_RELOC
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#define EXE_SYM ElfW(Sym)
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#endif /* CONFIG_FORMAT_ELF */
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#ifdef CONFIG_FORMAT_COFF
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#include "a.out-defs.h"
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typedef uint32_t host_ulong;
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#define FILENAMELEN 256
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typedef struct coff_sym {
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struct external_syment *st_syment;
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char st_name[FILENAMELEN];
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uint32_t st_value;
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int st_size;
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uint8_t st_type;
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uint8_t st_shndx;
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} coff_Sym;
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typedef struct coff_rel {
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struct external_reloc *r_reloc;
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int r_offset;
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uint8_t r_type;
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} coff_Rel;
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#define EXE_RELOC struct coff_rel
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#define EXE_SYM struct coff_sym
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#endif /* CONFIG_FORMAT_COFF */
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#ifdef CONFIG_FORMAT_MACH
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#include <mach-o/loader.h>
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#include <mach-o/nlist.h>
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#include <mach-o/reloc.h>
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#include <mach-o/ppc/reloc.h>
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#if defined(HOST_PPC) || defined(HOST_I386)
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# if defined(HOST_I386)
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# define mach_check_cputype(x) ((x) == CPU_TYPE_I386)
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# else
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# define mach_check_cputype(x) ((x) == CPU_TYPE_POWERPC)
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# endif
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# define check_mach_header(x) (x.magic == MH_MAGIC)
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# define SEGMENT_COMMAND segment_command
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# define MACH_HEADER mach_header
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# define SECTION section
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# define NLIST nlist
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typedef uint32_t host_ulong;
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#elif defined(HOST_X86_64)
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# include <mach-o/x86_64/reloc.h>
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# define mach_check_cputype(x) ((x) == CPU_TYPE_X86_64)
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# define check_mach_header(x) (x.magic == MH_MAGIC_64)
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# define SEGMENT_COMMAND segment_command_64
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# define MACH_HEADER mach_header_64
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# define SECTION section_64
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# define NLIST nlist_64
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typedef uint64_t host_ulong;
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#else
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#error unsupported CPU - please update the code
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#endif
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struct nlist_extended
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{
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union {
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#ifdef HOST_X86_64
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unsigned int n_strx;
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#else
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char *n_name;
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long n_strx;
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#endif
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} n_un;
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unsigned char n_type;
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unsigned char n_sect;
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short st_desc;
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unsigned long st_value;
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unsigned long st_size;
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};
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#define EXE_RELOC struct relocation_info
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#define EXE_SYM struct nlist_extended
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#endif /* CONFIG_FORMAT_MACH */
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enum {
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OUT_GEN_OP_ALL,
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};
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/* all dynamically generated functions begin with this code */
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#define OP_PREFIX "op_"
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int do_swap;
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void __attribute__((noreturn)) __attribute__((format (printf, 1, 2))) error(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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fprintf(stderr, "dyngen: ");
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, "\n");
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va_end(ap);
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exit(1);
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}
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void *load_data(int fd, long offset, unsigned int size)
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{
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char *data;
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data = malloc(size);
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if (!data)
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return NULL;
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lseek(fd, offset, SEEK_SET);
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if (read(fd, data, size) != size) {
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free(data);
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return NULL;
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}
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return data;
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}
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int strstart(const char *str, const char *val, const char **ptr)
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{
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const char *p, *q;
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p = str;
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q = val;
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while (*q != '\0') {
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if (*p != *q)
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return 0;
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p++;
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q++;
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}
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if (ptr)
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*ptr = p;
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return 1;
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}
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void pstrcpy(char *buf, int buf_size, const char *str)
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{
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int c;
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char *q = buf;
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if (buf_size <= 0)
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return;
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for(;;) {
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c = *str++;
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if (c == 0 || q >= buf + buf_size - 1)
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break;
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*q++ = c;
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}
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*q = '\0';
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}
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void swab16s(uint16_t *p)
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{
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*p = bswap_16(*p);
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}
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void swab32s(uint32_t *p)
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{
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*p = bswap_32(*p);
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}
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void swab64s(uint64_t *p)
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{
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*p = bswap_64(*p);
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}
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uint16_t get16(uint16_t *p)
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{
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uint16_t val;
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val = *p;
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if (do_swap)
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val = bswap_16(val);
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return val;
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}
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uint32_t get32(uint32_t *p)
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{
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uint32_t val;
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val = *p;
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if (do_swap)
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val = bswap_32(val);
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return val;
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}
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void put16(uint16_t *p, uint16_t val)
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{
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if (do_swap)
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val = bswap_16(val);
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*p = val;
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}
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void put32(uint32_t *p, uint32_t val)
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{
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if (do_swap)
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val = bswap_32(val);
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*p = val;
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}
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static int is_op_param(const char *sym_name, const char **ptr)
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{
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return
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strstart(sym_name, "__op_param", ptr) || strstart(sym_name, "_op_param", ptr) ||
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strstart(sym_name, "__op_PARAM", ptr) || strstart(sym_name, "_op_PARAM", ptr);
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}
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static int is_op_jmp(const char *sym_name, const char **ptr)
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{
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return strstart(sym_name, "__op_jmp", ptr) || strstart(sym_name, "_op_jmp", ptr);
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}
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static int is_op_gen_label(const char *sym_name, const char **ptr)
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{
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return strstart(sym_name, "__op_gen_label", ptr) || strstart(sym_name, "_op_gen_label", ptr);
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}
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/* generate op code */
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void gen_code(const char *name, const char *demangled_name,
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host_ulong offset, host_ulong size,
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FILE *outfile, int gen_switch, const char *prefix);
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void patch_relocations(FILE *outfile, const char *name, host_ulong size, host_ulong start_offset, int copy_size);
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static void do_print_code(FILE *outfile, const char *name, const uint8_t *code_p, int code_size, int is_code)
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{
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int i, b;
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fprintf(outfile, " static const uint8 %s[] = {", name);
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#ifdef DYNGEN_PRETTY_PRINT
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if (is_code) {
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const int BYTES_PER_LINE = 5;
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uint8_t out[1024];
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int outindex = 0;
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char buf[1024];
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uintptr_t addr = (uintptr_t)code_p;
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uintptr_t end_addr = addr + code_size;
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int ip = 0;
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fprintf(outfile, "\n");
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while (addr < end_addr) {
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int num = pretty_print(buf, (uintptr_t)addr, (uintptr_t)code_p);
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int max_num = num > BYTES_PER_LINE ? num : BYTES_PER_LINE;
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for (i = 0; i < max_num; i++) {
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if ((i % BYTES_PER_LINE) == 0)
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fprintf(outfile, "/* %04x */ ", ip);
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if (i < num) {
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fprintf(outfile, "0x%02x", (out[outindex++] = code_p[ip++]));
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if (ip != code_size)
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fprintf(outfile, ", ");
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else
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fprintf(outfile, " ");
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}
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else
|
|
fprintf(outfile, " ");
|
|
if (i == BYTES_PER_LINE - 1)
|
|
fprintf(outfile, "/* %s */", buf);
|
|
if ((i + 1) % BYTES_PER_LINE == 0 || i == max_num - 1)
|
|
fprintf(outfile, "\n");
|
|
}
|
|
addr += num;
|
|
}
|
|
fprintf(outfile, " };\n");
|
|
|
|
/* sanity check we have not forgotten any byte */
|
|
assert(outindex == code_size);
|
|
assert(memcmp(code_p, out, code_size) == 0);
|
|
return;
|
|
}
|
|
#endif
|
|
for (i = 0; i < code_size; i++) {
|
|
if ((i % 12) == 0) {
|
|
if (i != 0)
|
|
fprintf(outfile, ",");
|
|
fprintf(outfile, "\n ");
|
|
}
|
|
else
|
|
fprintf(outfile, ", ");
|
|
fprintf(outfile, "0x%02x", code_p[i]);
|
|
}
|
|
fprintf(outfile, "\n };\n");
|
|
}
|
|
|
|
static void print_code(FILE *outfile, const char *name, const uint8_t *code_p, int code_size)
|
|
{
|
|
char *code_name;
|
|
code_name = alloca(strlen(name) + 5);
|
|
strcpy(code_name, name);
|
|
strcat(code_name, "_code");
|
|
do_print_code(outfile, code_name, code_p, code_size, 1);
|
|
}
|
|
|
|
static void print_data(FILE *outfile, const char *name, const uint8_t *data, int data_size)
|
|
{
|
|
do_print_code(outfile, name, data, data_size, 0);
|
|
}
|
|
|
|
static char *gen_dot_prefix(const char *sym_name)
|
|
{
|
|
static char name[256];
|
|
assert(sym_name[0] == '.');
|
|
snprintf(name, sizeof(name), "dot_%s", sym_name + 1);
|
|
return name;
|
|
}
|
|
|
|
|
|
/* executable information */
|
|
EXE_SYM *symtab;
|
|
int nb_syms;
|
|
int text_shndx;
|
|
int data_shndx;
|
|
uint8_t *text;
|
|
uint8_t *data;
|
|
uint8_t *literal16;
|
|
EXE_RELOC *relocs;
|
|
int nb_relocs;
|
|
|
|
#ifdef CONFIG_FORMAT_ELF
|
|
|
|
/* ELF file info */
|
|
elf_shdr *shdr;
|
|
uint8_t **sdata;
|
|
elfhdr ehdr;
|
|
char *strtab;
|
|
|
|
int elf_must_swap(elfhdr *h)
|
|
{
|
|
union {
|
|
uint32_t i;
|
|
uint8_t b[4];
|
|
} swaptest;
|
|
|
|
swaptest.i = 1;
|
|
return (h->e_ident[EI_DATA] == ELFDATA2MSB) !=
|
|
(swaptest.b[0] == 0);
|
|
}
|
|
|
|
void elf_swap_ehdr(elfhdr *h)
|
|
{
|
|
swab16s(&h->e_type); /* Object file type */
|
|
swab16s(&h-> e_machine); /* Architecture */
|
|
swab32s(&h-> e_version); /* Object file version */
|
|
swabls(&h-> e_entry); /* Entry point virtual address */
|
|
swabls(&h-> e_phoff); /* Program header table file offset */
|
|
swabls(&h-> e_shoff); /* Section header table file offset */
|
|
swab32s(&h-> e_flags); /* Processor-specific flags */
|
|
swab16s(&h-> e_ehsize); /* ELF header size in bytes */
|
|
swab16s(&h-> e_phentsize); /* Program header table entry size */
|
|
swab16s(&h-> e_phnum); /* Program header table entry count */
|
|
swab16s(&h-> e_shentsize); /* Section header table entry size */
|
|
swab16s(&h-> e_shnum); /* Section header table entry count */
|
|
swab16s(&h-> e_shstrndx); /* Section header string table index */
|
|
}
|
|
|
|
void elf_swap_shdr(elf_shdr *h)
|
|
{
|
|
swab32s(&h-> sh_name); /* Section name (string tbl index) */
|
|
swab32s(&h-> sh_type); /* Section type */
|
|
swabls(&h-> sh_flags); /* Section flags */
|
|
swabls(&h-> sh_addr); /* Section virtual addr at execution */
|
|
swabls(&h-> sh_offset); /* Section file offset */
|
|
swabls(&h-> sh_size); /* Section size in bytes */
|
|
swab32s(&h-> sh_link); /* Link to another section */
|
|
swab32s(&h-> sh_info); /* Additional section information */
|
|
swabls(&h-> sh_addralign); /* Section alignment */
|
|
swabls(&h-> sh_entsize); /* Entry size if section holds table */
|
|
}
|
|
|
|
void elf_swap_phdr(elf_phdr *h)
|
|
{
|
|
swab32s(&h->p_type); /* Segment type */
|
|
swabls(&h->p_offset); /* Segment file offset */
|
|
swabls(&h->p_vaddr); /* Segment virtual address */
|
|
swabls(&h->p_paddr); /* Segment physical address */
|
|
swabls(&h->p_filesz); /* Segment size in file */
|
|
swabls(&h->p_memsz); /* Segment size in memory */
|
|
swab32s(&h->p_flags); /* Segment flags */
|
|
swabls(&h->p_align); /* Segment alignment */
|
|
}
|
|
|
|
void elf_swap_rel(ELF_RELOC *rel)
|
|
{
|
|
swabls(&rel->r_offset);
|
|
swabls(&rel->r_info);
|
|
#ifdef ELF_USES_RELOCA
|
|
swabls(&rel->r_addend);
|
|
#endif
|
|
}
|
|
|
|
elf_shdr *find_elf_section(elf_shdr *shdr, int shnum, const char *shstr,
|
|
const char *name)
|
|
{
|
|
int i;
|
|
const char *shname;
|
|
elf_shdr *sec;
|
|
|
|
for(i = 0; i < shnum; i++) {
|
|
sec = &shdr[i];
|
|
if (!sec->sh_name)
|
|
continue;
|
|
shname = shstr + sec->sh_name;
|
|
if (!strcmp(shname, name))
|
|
return sec;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int do_find_reloc(int sh_index, ElfW(Word) type)
|
|
{
|
|
elf_shdr *sec;
|
|
int i;
|
|
|
|
for(i = 0; i < ehdr.e_shnum; i++) {
|
|
sec = &shdr[i];
|
|
if (sec->sh_type == type && sec->sh_info == sh_index)
|
|
return i;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int find_reloc(int sh_index)
|
|
{
|
|
return do_find_reloc(sh_index, SHT_RELOC);
|
|
}
|
|
|
|
static host_ulong get_rel_offset(EXE_RELOC *rel)
|
|
{
|
|
return rel->r_offset;
|
|
}
|
|
|
|
static char *get_rel_sym_name(EXE_RELOC *rel)
|
|
{
|
|
return strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
|
|
}
|
|
|
|
static char *get_sym_name(EXE_SYM *sym)
|
|
{
|
|
return strtab + sym->st_name;
|
|
}
|
|
|
|
/* load an elf object file */
|
|
int load_object(const char *filename, FILE *outfile)
|
|
{
|
|
int fd;
|
|
elf_shdr *sec, *symtab_sec, *strtab_sec, *text_sec;
|
|
int i, j;
|
|
ElfW(Sym) *sym;
|
|
char *shstr;
|
|
ELF_RELOC *rel;
|
|
elf_shdr *data_sec;
|
|
elf_shdr *rodata_cst4_sec;
|
|
uint8_t *rodata_cst4 = NULL;
|
|
int rodata_cst4_shndx;
|
|
elf_shdr *rodata_cst8_sec;
|
|
uint8_t *rodata_cst8 = NULL;
|
|
int rodata_cst8_shndx;
|
|
elf_shdr *rodata_cst16_sec;
|
|
uint8_t *rodata_cst16 = NULL;
|
|
int rodata_cst16_shndx;
|
|
|
|
fd = open(filename, O_RDONLY);
|
|
if (fd < 0)
|
|
error("can't open file '%s'", filename);
|
|
|
|
/* Read ELF header. */
|
|
if (read(fd, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
|
|
error("unable to read file header");
|
|
|
|
/* Check ELF identification. */
|
|
if (ehdr.e_ident[EI_MAG0] != ELFMAG0
|
|
|| ehdr.e_ident[EI_MAG1] != ELFMAG1
|
|
|| ehdr.e_ident[EI_MAG2] != ELFMAG2
|
|
|| ehdr.e_ident[EI_MAG3] != ELFMAG3
|
|
|| ehdr.e_ident[EI_VERSION] != EV_CURRENT) {
|
|
error("bad ELF header");
|
|
}
|
|
|
|
do_swap = elf_must_swap(&ehdr);
|
|
if (do_swap)
|
|
elf_swap_ehdr(&ehdr);
|
|
if (ehdr.e_ident[EI_CLASS] != ELF_CLASS)
|
|
error("Unsupported ELF class");
|
|
if (ehdr.e_type != ET_REL)
|
|
error("ELF object file expected");
|
|
if (ehdr.e_version != EV_CURRENT)
|
|
error("Invalid ELF version");
|
|
if (!elf_check_arch(ehdr.e_machine))
|
|
error("Unsupported CPU (e_machine=%d)", ehdr.e_machine);
|
|
|
|
/* read section headers */
|
|
shdr = load_data(fd, ehdr.e_shoff, ehdr.e_shnum * sizeof(elf_shdr));
|
|
if (do_swap) {
|
|
for(i = 0; i < ehdr.e_shnum; i++) {
|
|
elf_swap_shdr(&shdr[i]);
|
|
}
|
|
}
|
|
|
|
/* read all section data */
|
|
sdata = malloc(sizeof(void *) * ehdr.e_shnum);
|
|
memset(sdata, 0, sizeof(void *) * ehdr.e_shnum);
|
|
|
|
for(i = 0;i < ehdr.e_shnum; i++) {
|
|
sec = &shdr[i];
|
|
if (sec->sh_type != SHT_NOBITS)
|
|
sdata[i] = load_data(fd, sec->sh_offset, sec->sh_size);
|
|
}
|
|
|
|
sec = &shdr[ehdr.e_shstrndx];
|
|
shstr = sdata[ehdr.e_shstrndx];
|
|
|
|
/* swap relocations */
|
|
for(i = 0; i < ehdr.e_shnum; i++) {
|
|
sec = &shdr[i];
|
|
if (sec->sh_type == SHT_REL || sec->sh_type == SHT_RELA) {
|
|
nb_relocs = sec->sh_size / sec->sh_entsize;
|
|
if (do_swap) {
|
|
for(j = 0, rel = (ELF_RELOC *)sdata[i]; j < nb_relocs; j++, rel++)
|
|
elf_swap_rel(rel);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* data section */
|
|
data_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".data");
|
|
if (data_sec) {
|
|
data_shndx = data_sec - shdr;
|
|
data = sdata[data_shndx];
|
|
}
|
|
else {
|
|
data_shndx = -1;
|
|
data = NULL;
|
|
}
|
|
|
|
/* rodata sections */
|
|
rodata_cst4_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".rodata.cst4");
|
|
if (rodata_cst4_sec) {
|
|
rodata_cst4_shndx = rodata_cst4_sec - shdr;
|
|
rodata_cst4 = sdata[rodata_cst4_shndx];
|
|
}
|
|
rodata_cst8_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".rodata.cst8");
|
|
if (rodata_cst8_sec) {
|
|
rodata_cst8_shndx = rodata_cst8_sec - shdr;
|
|
rodata_cst8 = sdata[rodata_cst8_shndx];
|
|
}
|
|
rodata_cst16_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".rodata.cst16");
|
|
if (rodata_cst16_sec) {
|
|
rodata_cst16_shndx = rodata_cst16_sec - shdr;
|
|
rodata_cst16 = sdata[rodata_cst16_shndx];
|
|
}
|
|
|
|
/* text section */
|
|
text_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".text");
|
|
if (!text_sec)
|
|
error("could not find .text section");
|
|
text_shndx = text_sec - shdr;
|
|
text = sdata[text_shndx];
|
|
|
|
/* find text relocations, if any */
|
|
relocs = NULL;
|
|
nb_relocs = 0;
|
|
i = find_reloc(text_shndx);
|
|
if (i != 0) {
|
|
relocs = (ELF_RELOC *)sdata[i];
|
|
nb_relocs = shdr[i].sh_size / shdr[i].sh_entsize;
|
|
}
|
|
#ifdef ELF_USES_ALSO_RELOC
|
|
i = do_find_reloc(text_shndx, SHT_REL);
|
|
if (i != 0) {
|
|
if (relocs) {
|
|
int j, nb_rels = shdr[i].sh_size / shdr[i].sh_entsize;
|
|
ElfW(Rel) *rels = (ElfW(Rel) *)sdata[i];
|
|
ELF_RELOC *new_relocs = (ELF_RELOC *)malloc(sizeof(ELF_RELOC) * (nb_relocs + nb_rels));
|
|
memcpy(new_relocs, relocs, sizeof(ELF_RELOC) * nb_relocs);
|
|
for (j = 0; j < nb_rels; j++) {
|
|
new_relocs[j + nb_relocs].r_offset = rels[j].r_offset;
|
|
new_relocs[j + nb_relocs].r_info = rels[j].r_info;
|
|
new_relocs[j + nb_relocs].r_addend = 0;
|
|
}
|
|
nb_relocs += nb_rels;
|
|
relocs = new_relocs;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
symtab_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".symtab");
|
|
if (!symtab_sec)
|
|
error("could not find .symtab section");
|
|
strtab_sec = &shdr[symtab_sec->sh_link];
|
|
|
|
symtab = (ElfW(Sym) *)sdata[symtab_sec - shdr];
|
|
strtab = sdata[symtab_sec->sh_link];
|
|
|
|
nb_syms = symtab_sec->sh_size / sizeof(ElfW(Sym));
|
|
if (do_swap) {
|
|
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
swab32s(&sym->st_name);
|
|
swabls(&sym->st_value);
|
|
swabls(&sym->st_size);
|
|
swab16s(&sym->st_shndx);
|
|
}
|
|
}
|
|
close(fd);
|
|
|
|
{
|
|
int status;
|
|
size_t nf, nd = 256;
|
|
char *demangled_name, *func_name;
|
|
if ((demangled_name = malloc(nd)) == NULL)
|
|
return -1;
|
|
if ((func_name = malloc(nf = nd)) == NULL) {
|
|
free(demangled_name);
|
|
return -1;
|
|
}
|
|
|
|
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
const char *name;
|
|
name = get_sym_name(sym);
|
|
/* emit local symbols */
|
|
if (strstart(name, ".LC", NULL)) {
|
|
const char *dot_name = gen_dot_prefix(name);
|
|
fprintf(outfile, "DEFINE_GEN(gen_const_%s,uint8 *,(void))\n", dot_name);
|
|
fprintf(outfile, "#ifdef DYNGEN_IMPL\n");
|
|
fprintf(outfile, "{\n");
|
|
int dot_size = 0;
|
|
if (sym->st_shndx == (rodata_cst16_sec - shdr))
|
|
print_data(outfile, dot_name, rodata_cst16 + sym->st_value, (dot_size = 16));
|
|
else if (sym->st_shndx == (rodata_cst8_sec - shdr))
|
|
print_data(outfile, dot_name, rodata_cst8 + sym->st_value, (dot_size = 8));
|
|
else if (sym->st_shndx == (rodata_cst4_sec - shdr))
|
|
print_data(outfile, dot_name, rodata_cst4 + sym->st_value, (dot_size = 4));
|
|
else
|
|
error("invalid section for local data %s (%x)\n", name, sym->st_shndx);
|
|
fprintf(outfile, " static uint8 *data_p = NULL;\n");
|
|
fprintf(outfile, " if (data_p == NULL)\n");
|
|
fprintf(outfile, " data_p = copy_data(%s, %d);\n", dot_name, dot_size);
|
|
fprintf(outfile, " return data_p;\n");
|
|
fprintf(outfile, "}\n");
|
|
fprintf(outfile, "#endif\n");
|
|
}
|
|
}
|
|
|
|
free(func_name);
|
|
free(demangled_name);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_FORMAT_ELF */
|
|
|
|
#ifdef CONFIG_FORMAT_COFF
|
|
|
|
/* COFF file info */
|
|
struct external_scnhdr *shdr;
|
|
uint8_t **sdata;
|
|
struct external_filehdr fhdr;
|
|
struct external_syment *coff_symtab;
|
|
char *strtab;
|
|
int coff_text_shndx, coff_data_shndx;
|
|
|
|
#define STRTAB_SIZE 4
|
|
|
|
#define DIR32 0x06
|
|
#define DISP32 0x14
|
|
|
|
#define T_FUNCTION 0x20
|
|
#define C_EXTERNAL 2
|
|
|
|
void sym_ent_name(struct external_syment *ext_sym, EXE_SYM *sym)
|
|
{
|
|
char *q;
|
|
int c, i, len;
|
|
|
|
if (ext_sym->e.e.e_zeroes != 0) {
|
|
q = sym->st_name;
|
|
for(i = 0; i < 8; i++) {
|
|
c = ext_sym->e.e_name[i];
|
|
if (c == '\0')
|
|
break;
|
|
*q++ = c;
|
|
}
|
|
*q = '\0';
|
|
} else {
|
|
pstrcpy(sym->st_name, sizeof(sym->st_name), strtab + ext_sym->e.e.e_offset);
|
|
}
|
|
|
|
/* now convert the name to a C name (suppress the leading '_') */
|
|
if (sym->st_name[0] == '_') {
|
|
len = strlen(sym->st_name);
|
|
memmove(sym->st_name, sym->st_name + 1, len - 1);
|
|
sym->st_name[len - 1] = '\0';
|
|
}
|
|
}
|
|
|
|
char *name_for_dotdata(struct coff_rel *rel)
|
|
{
|
|
int i;
|
|
struct coff_sym *sym;
|
|
uint32_t text_data;
|
|
|
|
text_data = *(uint32_t *)(text + rel->r_offset);
|
|
|
|
for (i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
if (sym->st_syment->e_scnum == data_shndx &&
|
|
text_data >= sym->st_value &&
|
|
text_data < sym->st_value + sym->st_size) {
|
|
|
|
return sym->st_name;
|
|
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static char *get_sym_name(EXE_SYM *sym)
|
|
{
|
|
return sym->st_name;
|
|
}
|
|
|
|
static char *get_rel_sym_name(EXE_RELOC *rel)
|
|
{
|
|
char *name;
|
|
name = get_sym_name(symtab + *(uint32_t *)(rel->r_reloc->r_symndx));
|
|
if (!strcmp(name, ".data"))
|
|
name = name_for_dotdata(rel);
|
|
return name;
|
|
}
|
|
|
|
static host_ulong get_rel_offset(EXE_RELOC *rel)
|
|
{
|
|
return rel->r_offset;
|
|
}
|
|
|
|
struct external_scnhdr *find_coff_section(struct external_scnhdr *shdr, int shnum, const char *name)
|
|
{
|
|
int i;
|
|
const char *shname;
|
|
struct external_scnhdr *sec;
|
|
|
|
for(i = 0; i < shnum; i++) {
|
|
sec = &shdr[i];
|
|
if (!sec->s_name)
|
|
continue;
|
|
shname = sec->s_name;
|
|
if (!strcmp(shname, name))
|
|
return sec;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* load a coff object file */
|
|
int load_object(const char *filename, FILE *outfile)
|
|
{
|
|
int fd;
|
|
struct external_scnhdr *sec, *text_sec, *data_sec;
|
|
int i, j;
|
|
struct external_syment *ext_sym;
|
|
struct external_reloc *coff_relocs;
|
|
struct external_reloc *ext_rel;
|
|
uint32_t *n_strtab;
|
|
EXE_SYM *sym;
|
|
EXE_RELOC *rel;
|
|
|
|
fd = open(filename, O_RDONLY
|
|
#ifdef _WIN32
|
|
| O_BINARY
|
|
#endif
|
|
);
|
|
if (fd < 0)
|
|
error("can't open file '%s'", filename);
|
|
|
|
/* Read COFF header. */
|
|
if (read(fd, &fhdr, sizeof (fhdr)) != sizeof (fhdr))
|
|
error("unable to read file header");
|
|
|
|
/* Check COFF identification. */
|
|
if (fhdr.f_magic != I386MAGIC) {
|
|
error("bad COFF header");
|
|
}
|
|
do_swap = 0;
|
|
|
|
/* read section headers */
|
|
shdr = load_data(fd, sizeof(struct external_filehdr) + fhdr.f_opthdr, fhdr.f_nscns * sizeof(struct external_scnhdr));
|
|
|
|
/* read all section data */
|
|
sdata = malloc(sizeof(void *) * fhdr.f_nscns);
|
|
memset(sdata, 0, sizeof(void *) * fhdr.f_nscns);
|
|
|
|
const char *p;
|
|
for(i = 0;i < fhdr.f_nscns; i++) {
|
|
sec = &shdr[i];
|
|
if (!strstart(sec->s_name, ".bss", &p))
|
|
sdata[i] = load_data(fd, sec->s_scnptr, sec->s_size);
|
|
}
|
|
|
|
|
|
/* text section */
|
|
text_sec = find_coff_section(shdr, fhdr.f_nscns, ".text");
|
|
if (!text_sec)
|
|
error("could not find .text section");
|
|
coff_text_shndx = text_sec - shdr;
|
|
text = sdata[coff_text_shndx];
|
|
|
|
/* data section */
|
|
data_sec = find_coff_section(shdr, fhdr.f_nscns, ".data");
|
|
if (!data_sec)
|
|
error("could not find .data section");
|
|
coff_data_shndx = data_sec - shdr;
|
|
data = sdata[coff_data_shndx];
|
|
|
|
coff_symtab = load_data(fd, fhdr.f_symptr, fhdr.f_nsyms*SYMESZ);
|
|
for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
|
|
for(j=0;j<8;j++)
|
|
printf(" %02x", ((uint8_t *)ext_sym->e.e_name)[j]);
|
|
printf("\n");
|
|
}
|
|
|
|
nb_syms = fhdr.f_nsyms;
|
|
n_strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), STRTAB_SIZE);
|
|
strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), *n_strtab);
|
|
|
|
for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
|
|
if (strstart(ext_sym->e.e_name, ".text", NULL))
|
|
text_shndx = ext_sym->e_scnum;
|
|
if (strstart(ext_sym->e.e_name, ".data", NULL))
|
|
data_shndx = ext_sym->e_scnum;
|
|
}
|
|
|
|
/* set coff symbol */
|
|
symtab = malloc(sizeof(struct coff_sym) * nb_syms);
|
|
|
|
int aux_size;
|
|
for (i = 0, ext_sym = coff_symtab, sym = symtab; i < nb_syms; i++, ext_sym++, sym++) {
|
|
memset(sym, 0, sizeof(*sym));
|
|
sym->st_syment = ext_sym;
|
|
sym_ent_name(ext_sym, sym);
|
|
sym->st_value = ext_sym->e_value;
|
|
|
|
aux_size = *(int8_t *)ext_sym->e_numaux;
|
|
if (ext_sym->e_scnum == text_shndx && ext_sym->e_type == T_FUNCTION) {
|
|
for (j = aux_size + 1; j < nb_syms - i; j++) {
|
|
if ((ext_sym + j)->e_scnum == text_shndx &&
|
|
(ext_sym + j)->e_type == T_FUNCTION ){
|
|
sym->st_size = (ext_sym + j)->e_value - ext_sym->e_value;
|
|
break;
|
|
} else if (j == nb_syms - i - 1) {
|
|
sec = &shdr[coff_text_shndx];
|
|
sym->st_size = sec->s_size - ext_sym->e_value;
|
|
break;
|
|
}
|
|
}
|
|
} else if (ext_sym->e_scnum == data_shndx && *(uint8_t *)ext_sym->e_sclass == C_EXTERNAL) {
|
|
for (j = aux_size + 1; j < nb_syms - i; j++) {
|
|
if ((ext_sym + j)->e_scnum == data_shndx) {
|
|
sym->st_size = (ext_sym + j)->e_value - ext_sym->e_value;
|
|
break;
|
|
} else if (j == nb_syms - i - 1) {
|
|
sec = &shdr[coff_data_shndx];
|
|
sym->st_size = sec->s_size - ext_sym->e_value;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
sym->st_size = 0;
|
|
}
|
|
|
|
sym->st_type = ext_sym->e_type;
|
|
sym->st_shndx = ext_sym->e_scnum;
|
|
}
|
|
|
|
|
|
/* find text relocations, if any */
|
|
sec = &shdr[coff_text_shndx];
|
|
coff_relocs = load_data(fd, sec->s_relptr, sec->s_nreloc*RELSZ);
|
|
nb_relocs = sec->s_nreloc;
|
|
|
|
/* set coff relocation */
|
|
relocs = malloc(sizeof(struct coff_rel) * nb_relocs);
|
|
for (i = 0, ext_rel = coff_relocs, rel = relocs; i < nb_relocs;
|
|
i++, ext_rel++, rel++) {
|
|
memset(rel, 0, sizeof(*rel));
|
|
rel->r_reloc = ext_rel;
|
|
rel->r_offset = *(uint32_t *)ext_rel->r_vaddr;
|
|
rel->r_type = *(uint16_t *)ext_rel->r_type;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_FORMAT_COFF */
|
|
|
|
#ifdef CONFIG_FORMAT_MACH
|
|
|
|
/* File Header */
|
|
struct MACH_HEADER mach_hdr;
|
|
|
|
/* commands */
|
|
struct SEGMENT_COMMAND *segment = 0;
|
|
struct dysymtab_command *dysymtabcmd = 0;
|
|
struct symtab_command *symtabcmd = 0;
|
|
|
|
/* section */
|
|
struct SECTION *section_hdr;
|
|
struct SECTION *text_sec_hdr;
|
|
struct SECTION *data_sec_hdr;
|
|
struct SECTION *literal16_sec_hdr;
|
|
uint8_t **sdata;
|
|
|
|
/* relocs */
|
|
struct relocation_info *relocs;
|
|
|
|
/* symbols */
|
|
EXE_SYM *symtab;
|
|
struct NLIST *symtab_std;
|
|
char *strtab;
|
|
|
|
/* indirect symbols */
|
|
uint32_t *tocdylib;
|
|
|
|
/* Utility functions */
|
|
|
|
static inline char *find_str_by_index(int index)
|
|
{
|
|
return strtab+index;
|
|
}
|
|
|
|
/* Used by dyngen common code */
|
|
static char *get_sym_name(EXE_SYM *sym)
|
|
{
|
|
char *name = find_str_by_index(sym->n_un.n_strx);
|
|
|
|
if ( sym->n_type & N_STAB ) /* Debug symbols are ignored */
|
|
return "debug";
|
|
|
|
if(!name)
|
|
return name;
|
|
if(name[0]=='_')
|
|
return name + 1;
|
|
else
|
|
return name;
|
|
}
|
|
|
|
/* find a section index given its segname, sectname */
|
|
static int find_mach_sec_index(struct SECTION *section_hdr, int shnum, const char *segname,
|
|
const char *sectname)
|
|
{
|
|
int i;
|
|
struct SECTION *sec = section_hdr;
|
|
|
|
for(i = 0; i < shnum; i++, sec++) {
|
|
if (!sec->segname || !sec->sectname)
|
|
continue;
|
|
if (!strcmp(sec->sectname, sectname) && !strcmp(sec->segname, segname))
|
|
return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* find a section header given its segname, sectname */
|
|
struct SECTION *find_mach_sec_hdr(struct SECTION *section_hdr, int shnum, const char *segname,
|
|
const char *sectname)
|
|
{
|
|
int index = find_mach_sec_index(section_hdr, shnum, segname, sectname);
|
|
if(index == -1)
|
|
return NULL;
|
|
return section_hdr+index;
|
|
}
|
|
|
|
|
|
static inline void fetch_next_pair_value(struct relocation_info * rel, unsigned int *value)
|
|
{
|
|
struct scattered_relocation_info * scarel;
|
|
|
|
if(R_SCATTERED & rel->r_address) {
|
|
scarel = (struct scattered_relocation_info*)rel;
|
|
if(scarel->r_type != PPC_RELOC_PAIR)
|
|
error("fetch_next_pair_value: looking for a pair which was not found (1)");
|
|
*value = scarel->r_value;
|
|
} else {
|
|
if(rel->r_type != PPC_RELOC_PAIR)
|
|
error("fetch_next_pair_value: looking for a pair which was not found (2)");
|
|
*value = rel->r_address;
|
|
}
|
|
}
|
|
|
|
/* find a sym name given its value, in a section number */
|
|
static const char * find_sym_with_value_and_sec_number( int value, int sectnum, int * offset )
|
|
{
|
|
int i, ret = -1;
|
|
|
|
for( i = 0 ; i < nb_syms; i++ )
|
|
{
|
|
if( !(symtab[i].n_type & N_STAB) && (symtab[i].n_type & N_SECT) &&
|
|
(symtab[i].n_sect == sectnum) && (symtab[i].st_value <= value) )
|
|
{
|
|
if( (ret<0) || (symtab[i].st_value >= symtab[ret].st_value) )
|
|
ret = i;
|
|
}
|
|
}
|
|
if( ret < 0 ) {
|
|
*offset = 0;
|
|
return 0;
|
|
} else {
|
|
*offset = value - symtab[ret].st_value;
|
|
return get_sym_name(&symtab[ret]);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Find symbol name given a (virtual) address, and a section which is of type
|
|
* S_NON_LAZY_SYMBOL_POINTERS or S_LAZY_SYMBOL_POINTERS or S_SYMBOL_STUBS
|
|
*/
|
|
static const char * find_reloc_name_in_sec_ptr(int address, struct SECTION * sec_hdr)
|
|
{
|
|
unsigned int tocindex, symindex, size;
|
|
const char *name = 0;
|
|
|
|
/* Sanity check */
|
|
if(!( address >= sec_hdr->addr && address < (sec_hdr->addr + sec_hdr->size) ) )
|
|
return (char*)0;
|
|
|
|
if( sec_hdr->flags & S_SYMBOL_STUBS ){
|
|
size = sec_hdr->reserved2;
|
|
if(size == 0)
|
|
error("size = 0");
|
|
|
|
}
|
|
else if( (sec_hdr->flags & S_LAZY_SYMBOL_POINTERS) ||
|
|
(sec_hdr->flags & S_NON_LAZY_SYMBOL_POINTERS) )
|
|
size = sizeof(unsigned long);
|
|
else
|
|
return 0;
|
|
|
|
/* Compute our index in toc */
|
|
tocindex = (address - sec_hdr->addr)/size;
|
|
symindex = tocdylib[sec_hdr->reserved1 + tocindex];
|
|
|
|
name = get_sym_name(&symtab[symindex]);
|
|
|
|
return name;
|
|
}
|
|
|
|
static const char * find_reloc_name_given_its_address(int address)
|
|
{
|
|
unsigned int i;
|
|
for(i = 0; i < segment->nsects ; i++)
|
|
{
|
|
const char * name = find_reloc_name_in_sec_ptr(address, §ion_hdr[i]);
|
|
if((long)name != -1)
|
|
return name;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const char * get_reloc_name(EXE_RELOC * rel, int * sslide)
|
|
{
|
|
char * name = 0;
|
|
struct scattered_relocation_info * sca_rel = (struct scattered_relocation_info*)rel;
|
|
int sectnum = rel->r_symbolnum;
|
|
int sectoffset;
|
|
unsigned int other_half=0;
|
|
|
|
/* init the slide value */
|
|
#ifdef HOST_X86_64 /* no scattered on x86_64 */
|
|
switch(rel->r_length)
|
|
{
|
|
case 0: *sslide = *(uint8_t *)(text + rel->r_address); break;
|
|
case 1: *sslide = *(uint16_t *)(text + rel->r_address); break;
|
|
case 2: *sslide = *(uint32_t *)(text + rel->r_address); break;
|
|
case 3: *sslide = *(uint64_t *)(text + rel->r_address); break;
|
|
}
|
|
#else
|
|
*sslide = 0;
|
|
|
|
if (R_SCATTERED & rel->r_address) {
|
|
char *name = (char *)find_reloc_name_given_its_address(sca_rel->r_value);
|
|
|
|
/* search it in the full symbol list, if not found */
|
|
if (!name) {
|
|
int i;
|
|
for (i = 0; i < nb_syms; i++) {
|
|
EXE_SYM *sym = &symtab[i];
|
|
if (sym->st_value == sca_rel->r_value) {
|
|
name = get_sym_name(sym);
|
|
switch (sca_rel->r_type) {
|
|
case GENERIC_RELOC_VANILLA:
|
|
*sslide = *(uint32_t *)(text + sca_rel->r_address) - sca_rel->r_value;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return name;
|
|
}
|
|
#endif
|
|
|
|
if(rel->r_extern)
|
|
{
|
|
/* ignore debug sym */
|
|
if ( symtab[rel->r_symbolnum].n_type & N_STAB )
|
|
return 0;
|
|
return get_sym_name(&symtab[rel->r_symbolnum]);
|
|
}
|
|
|
|
#ifdef HOST_X86_64
|
|
return 0;
|
|
#else
|
|
|
|
/* Intruction contains an offset to the symbols pointed to, in the rel->r_symbolnum section */
|
|
sectoffset = *(uint32_t *)(text + rel->r_address) & 0xffff;
|
|
|
|
if(sectnum==0xffffff)
|
|
return 0;
|
|
|
|
/* Sanity Check */
|
|
if(sectnum > segment->nsects)
|
|
error("sectnum > segment->nsects");
|
|
|
|
switch(rel->r_type)
|
|
{
|
|
case PPC_RELOC_PAIR: // The second relocation entry of a pair. A PPC_RELOC_PAIR entry must follow each of the other relocation entry types, except for PPC_RELOC_VANILLA, PPC_RELOC_BR14, PPC_RELOC_BR24, and PPC_RELOC_PB_LA_PTR.
|
|
break;
|
|
case PPC_RELOC_LO16: fetch_next_pair_value(rel+1, &other_half); sectoffset |= (other_half << 16);
|
|
break;
|
|
case PPC_RELOC_HI16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) | (uint16_t)(other_half & 0xffff);
|
|
break;
|
|
case PPC_RELOC_HA16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) + (int16_t)(other_half & 0xffff);
|
|
break;
|
|
case PPC_RELOC_BR24:
|
|
sectoffset = ( *(uint32_t *)(text + rel->r_address) & 0x03fffffc );
|
|
if (sectoffset & 0x02000000) sectoffset |= 0xfc000000;
|
|
break;
|
|
case GENERIC_RELOC_VANILLA:
|
|
sectoffset = *(uint32_t *)(text + rel->r_address);
|
|
break;
|
|
default:
|
|
error("switch(rel->type=%d) not found", rel->r_type);
|
|
}
|
|
|
|
if(rel->r_pcrel) {
|
|
sectoffset += rel->r_address;
|
|
#ifdef HOST_I386
|
|
sectoffset += (1 << rel->r_length);
|
|
#endif
|
|
}
|
|
|
|
if (rel->r_type == PPC_RELOC_BR24)
|
|
name = (char *)find_reloc_name_in_sec_ptr((int)sectoffset, §ion_hdr[sectnum-1]);
|
|
|
|
/* search it in the full symbol list, if not found */
|
|
if(!name)
|
|
name = (char *)find_sym_with_value_and_sec_number(sectoffset, sectnum, sslide);
|
|
|
|
return name;
|
|
#endif
|
|
}
|
|
|
|
/* Used by dyngen common code */
|
|
static const char * get_rel_sym_name(EXE_RELOC * rel)
|
|
{
|
|
int sslide;
|
|
return get_reloc_name( rel, &sslide);
|
|
}
|
|
|
|
/* Used by dyngen common code */
|
|
static host_ulong get_rel_offset(EXE_RELOC *rel)
|
|
{
|
|
struct scattered_relocation_info * sca_rel = (struct scattered_relocation_info*)rel;
|
|
if(R_SCATTERED & rel->r_address)
|
|
return sca_rel->r_address;
|
|
else
|
|
return rel->r_address;
|
|
}
|
|
|
|
/* load a mach-o object file */
|
|
int load_object(const char *filename, FILE *outfile)
|
|
{
|
|
int fd;
|
|
unsigned int offset_to_segment = 0;
|
|
unsigned int offset_to_dysymtab = 0;
|
|
unsigned int offset_to_symtab = 0;
|
|
struct load_command lc;
|
|
unsigned int i, j;
|
|
EXE_SYM *sym;
|
|
struct NLIST *syment;
|
|
|
|
fd = open(filename, O_RDONLY);
|
|
if (fd < 0)
|
|
error("can't open file '%s'", filename);
|
|
|
|
/* Read Mach header. */
|
|
if (read(fd, &mach_hdr, sizeof (mach_hdr)) != sizeof (mach_hdr))
|
|
error("unable to read file header");
|
|
|
|
/* Check Mach identification. */
|
|
if (!check_mach_header(mach_hdr)) {
|
|
error("bad Mach header");
|
|
}
|
|
|
|
if (!mach_check_cputype(mach_hdr.cputype))
|
|
error("Unsupported CPU");
|
|
|
|
if (mach_hdr.filetype != MH_OBJECT)
|
|
error("Unsupported Mach Object");
|
|
|
|
/* read segment headers */
|
|
for(i=0, j=sizeof(mach_hdr); i<mach_hdr.ncmds ; i++)
|
|
{
|
|
if(read(fd, &lc, sizeof(struct load_command)) != sizeof(struct load_command))
|
|
error("unable to read load_command");
|
|
switch(lc.cmd) {
|
|
#ifdef HOST_X86_64
|
|
case LC_SEGMENT_64:
|
|
#else
|
|
case LC_SEGMENT:
|
|
#endif
|
|
offset_to_segment = j;
|
|
lseek(fd, offset_to_segment, SEEK_SET);
|
|
segment = malloc(sizeof(struct SEGMENT_COMMAND));
|
|
if(read(fd, segment, sizeof(struct SEGMENT_COMMAND)) != sizeof(struct SEGMENT_COMMAND))
|
|
error("unable to read LC_SEGMENT");
|
|
break;
|
|
|
|
case LC_DYSYMTAB:
|
|
offset_to_dysymtab = j;
|
|
lseek(fd, offset_to_dysymtab, SEEK_SET);
|
|
dysymtabcmd = malloc(sizeof(struct dysymtab_command));
|
|
if(read(fd, dysymtabcmd, sizeof(struct dysymtab_command)) != sizeof(struct dysymtab_command))
|
|
error("unable to read LC_DYSYMTAB");
|
|
break;
|
|
|
|
case LC_SYMTAB:
|
|
offset_to_symtab = j;
|
|
lseek(fd, offset_to_symtab, SEEK_SET);
|
|
symtabcmd = malloc(sizeof(struct symtab_command));
|
|
if(read(fd, symtabcmd, sizeof(struct symtab_command)) != sizeof(struct symtab_command))
|
|
error("unable to read LC_SYMTAB");
|
|
break;
|
|
|
|
default:
|
|
error("LC: unknown command: %#x", lc.cmd);
|
|
}
|
|
j+=lc.cmdsize;
|
|
|
|
lseek(fd, j, SEEK_SET);
|
|
}
|
|
|
|
if(!segment)
|
|
error("unable to find LC_SEGMENT");
|
|
|
|
/* read section headers */
|
|
section_hdr = load_data(fd, offset_to_segment + sizeof(struct SEGMENT_COMMAND), segment->nsects * sizeof(struct SECTION));
|
|
|
|
/* read all section data */
|
|
sdata = (uint8_t **)malloc(sizeof(void *) * segment->nsects);
|
|
memset(sdata, 0, sizeof(void *) * segment->nsects);
|
|
|
|
/* Load the data in section data */
|
|
for(i = 0; i < segment->nsects; i++)
|
|
sdata[i] = load_data(fd, section_hdr[i].offset, section_hdr[i].size);
|
|
|
|
/* .data section */
|
|
data_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_DATA, SECT_DATA);
|
|
i = find_mach_sec_index(section_hdr, segment->nsects, SEG_DATA, SECT_DATA);
|
|
data = (i == -1) ? NULL : sdata[i];
|
|
|
|
/* const section TODO: __cstring __literal4 __literal8 */
|
|
literal16_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_TEXT, "__literal16");
|
|
i = find_mach_sec_index(section_hdr, segment->nsects, SEG_TEXT, "__literal16");
|
|
literal16 = (i == -1) ? NULL : sdata[i];
|
|
|
|
/* .text section */
|
|
text_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT);
|
|
i = find_mach_sec_index(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT);
|
|
if (i == -1 || !text_sec_hdr)
|
|
error("could not find __TEXT,__text section");
|
|
text = sdata[i];
|
|
|
|
/* Make sure dysym was loaded */
|
|
if(dysymtabcmd == NULL)
|
|
error("could not find __DYSYMTAB segment");
|
|
|
|
/* read the table of content of the indirect sym */
|
|
tocdylib = load_data( fd, dysymtabcmd->indirectsymoff, dysymtabcmd->nindirectsyms * sizeof(uint32_t) );
|
|
|
|
/* Make sure symtab was loaded */
|
|
if(symtabcmd == NULL)
|
|
error("could not find __SYMTAB segment");
|
|
nb_syms = symtabcmd->nsyms;
|
|
|
|
symtab_std = load_data(fd, symtabcmd->symoff, symtabcmd->nsyms * sizeof(struct NLIST));
|
|
strtab = load_data(fd, symtabcmd->stroff, symtabcmd->strsize);
|
|
|
|
symtab = malloc(sizeof(EXE_SYM) * nb_syms);
|
|
|
|
/* Now transform the symtab, to an extended version, with the sym size, and the C name */
|
|
for(i = 0, sym = symtab, syment = symtab_std; i < nb_syms; i++, sym++, syment++) {
|
|
struct NLIST *sym_follow, *sym_next = 0;
|
|
unsigned int j;
|
|
memset(sym, 0, sizeof(*sym));
|
|
|
|
if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */
|
|
continue;
|
|
|
|
if ( strchr((char*)(strtab + syment->n_un.n_strx), '.') ) /* no Exception handlers */
|
|
continue;
|
|
|
|
memcpy(sym, syment, sizeof(*syment));
|
|
|
|
/* Find the following symbol in order to get the current symbol size */
|
|
for(j = 0, sym_follow = symtab_std; j < nb_syms; j++, sym_follow++) {
|
|
if ( sym_follow->n_sect != 1 || (sym_follow->n_type & N_STAB) || !(sym_follow->n_value > sym->st_value) )
|
|
continue;
|
|
if(!sym_next) {
|
|
sym_next = sym_follow;
|
|
continue;
|
|
}
|
|
if(!(sym_next->n_value > sym_follow->n_value))
|
|
continue;
|
|
sym_next = sym_follow;
|
|
}
|
|
if(sym_next)
|
|
sym->st_size = sym_next->n_value - sym->st_value;
|
|
else
|
|
sym->st_size = text_sec_hdr->size - sym->st_value;
|
|
}
|
|
|
|
/* Find Reloc */
|
|
relocs = load_data(fd, text_sec_hdr->reloff, text_sec_hdr->nreloc * sizeof(struct relocation_info));
|
|
nb_relocs = text_sec_hdr->nreloc;
|
|
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_FORMAT_MACH */
|
|
|
|
void get_reloc_expr(char *name, int name_size, const char *sym_name)
|
|
{
|
|
const char *p;
|
|
char *demangled;
|
|
char demangled_buf[256];
|
|
size_t nd = sizeof(demangled_buf);
|
|
int status;
|
|
|
|
demangled = cxx_demangle(sym_name, demangled_buf, &nd, &status);
|
|
if (!status && demangled)
|
|
sym_name = demangled;
|
|
if (is_op_param(sym_name, &p)) {
|
|
snprintf(name, name_size, "param%s", p);
|
|
} else if (is_op_gen_label(sym_name, &p)) {
|
|
snprintf(name, name_size, "gen_labels[param%s]", p);
|
|
} else if (strstart(sym_name, ".LC", NULL)) {
|
|
snprintf(name, name_size, "(long)(gen_const_%s())", gen_dot_prefix(sym_name));
|
|
} else {
|
|
#ifdef HOST_SPARC
|
|
if (sym_name[0] == '.')
|
|
snprintf(name, name_size,
|
|
"(long)(&__dot_%s)",
|
|
sym_name + 1);
|
|
else
|
|
#endif
|
|
snprintf(name, name_size, "(long)(&%s)", sym_name);
|
|
}
|
|
}
|
|
|
|
#ifdef HOST_ARM
|
|
|
|
int arm_emit_ldr_info(const char *name, unsigned long start_offset,
|
|
FILE *outfile, uint8_t *p_start, uint8_t *p_end,
|
|
ELF_RELOC *relocs, int nb_relocs)
|
|
{
|
|
uint8_t *p;
|
|
uint32_t insn;
|
|
int offset, min_offset, pc_offset, data_size;
|
|
uint8_t data_allocated[1024];
|
|
unsigned int data_index;
|
|
|
|
memset(data_allocated, 0, sizeof(data_allocated));
|
|
|
|
p = p_start;
|
|
min_offset = p_end - p_start;
|
|
while (p < p_start + min_offset) {
|
|
insn = get32((uint32_t *)p);
|
|
if ((insn & 0x0d5f0000) == 0x051f0000) {
|
|
/* ldr reg, [pc, #im] */
|
|
offset = insn & 0xfff;
|
|
if (!(insn & 0x00800000))
|
|
offset = -offset;
|
|
if ((offset & 3) !=0)
|
|
error("%s:%04x: ldr pc offset must be 32 bit aligned",
|
|
name, start_offset + p - p_start);
|
|
pc_offset = p - p_start + offset + 8;
|
|
if (pc_offset <= (p - p_start) ||
|
|
pc_offset >= (p_end - p_start))
|
|
error("%s:%04x: ldr pc offset must point inside the function code",
|
|
name, start_offset + p - p_start);
|
|
if (pc_offset < min_offset)
|
|
min_offset = pc_offset;
|
|
if (outfile) {
|
|
/* ldr position */
|
|
fprintf(outfile, " arm_ldr_ptr->ptr = ptr() + %d;\n",
|
|
p - p_start);
|
|
/* ldr data index */
|
|
data_index = ((p_end - p_start) - pc_offset - 4) >> 2;
|
|
fprintf(outfile, " arm_ldr_ptr->data_ptr = arm_data_ptr + %d;\n",
|
|
data_index);
|
|
fprintf(outfile, " arm_ldr_ptr++;\n");
|
|
if (data_index >= sizeof(data_allocated))
|
|
error("%s: too many data", name);
|
|
if (!data_allocated[data_index]) {
|
|
ELF_RELOC *rel;
|
|
int i, addend, type;
|
|
const char *sym_name, *p;
|
|
char relname[1024];
|
|
|
|
data_allocated[data_index] = 1;
|
|
|
|
/* data value */
|
|
addend = get32((uint32_t *)(p_start + pc_offset));
|
|
relname[0] = '\0';
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset == (pc_offset + start_offset)) {
|
|
sym_name = get_rel_sym_name(rel);
|
|
/* the compiler leave some unnecessary references to the code */
|
|
get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
if (type != R_ARM_ABS32)
|
|
error("%s: unsupported data relocation", name);
|
|
break;
|
|
}
|
|
}
|
|
fprintf(outfile, " arm_data_ptr[%d] = 0x%x",
|
|
data_index, addend);
|
|
if (relname[0] != '\0')
|
|
fprintf(outfile, " + %s", relname);
|
|
fprintf(outfile, ";\n");
|
|
}
|
|
}
|
|
}
|
|
p += 4;
|
|
}
|
|
data_size = (p_end - p_start) - min_offset;
|
|
if (data_size > 0 && outfile) {
|
|
fprintf(outfile, " arm_data_ptr += %d;\n", data_size >> 2);
|
|
}
|
|
|
|
/* the last instruction must be a mov pc, lr */
|
|
if (p == p_start)
|
|
goto arm_ret_error;
|
|
p -= 4;
|
|
insn = get32((uint32_t *)p);
|
|
if ((insn & 0xffff0000) != 0xe91b0000) {
|
|
arm_ret_error:
|
|
if (!outfile)
|
|
printf("%s: invalid epilog\n", name);
|
|
}
|
|
return p - p_start;
|
|
}
|
|
#endif
|
|
|
|
|
|
#define MAX_ARGS 3
|
|
|
|
/* generate op code */
|
|
void gen_code(const char *name, const char *demangled_name,
|
|
host_ulong offset, host_ulong size,
|
|
FILE *outfile, int gen_switch, const char *prefix)
|
|
{
|
|
int copy_size = 0;
|
|
uint8_t *p_start, *p_end;
|
|
host_ulong start_offset;
|
|
int nb_args, i, n;
|
|
uint8_t args_present[MAX_ARGS];
|
|
const char *sym_name, *p;
|
|
EXE_RELOC *rel;
|
|
int op_execute = 0;
|
|
char demangled_buf[256];
|
|
size_t nd;
|
|
char *demangled;
|
|
int status;
|
|
|
|
if (strncmp(name, "op_execute", 10) == 0)
|
|
op_execute = 1;
|
|
|
|
/* Compute exact size excluding prologue and epilogue instructions.
|
|
* Increment start_offset to skip epilogue instructions, then compute
|
|
* copy_size the indicate the size of the remaining instructions (in
|
|
* bytes).
|
|
*/
|
|
p_start = text + offset;
|
|
p_end = p_start + size;
|
|
start_offset = offset;
|
|
if (op_execute) {
|
|
uint8_t *p;
|
|
copy_size = p_end - p_start;
|
|
#ifdef CONFIG_FORMAT_MACH
|
|
#if defined(HOST_PPC)
|
|
for (p = p_start; p < p_end; p += 4) {
|
|
if (get32((uint32_t *)p) == 0x18deadff)
|
|
fprintf(outfile, "DEFINE_CST(op_exec_return_offset,0x%xL)\n\n", (p + 4) - p_start);
|
|
}
|
|
#elif defined(HOST_I386)
|
|
static const uint8_t return_insn[] = {0x0f,0xa6,0xf0};
|
|
for (p = p_start; p < p_end; p++) {
|
|
if (memcmp(p, return_insn, sizeof(return_insn)) == 0)
|
|
fprintf(outfile, "DEFINE_CST(op_exec_return_offset,0x%xL)\n\n", (p + sizeof(return_insn)) - p_start);
|
|
}
|
|
#endif
|
|
#endif
|
|
}
|
|
else
|
|
#if defined(HOST_I386) || defined(HOST_X86_64)
|
|
{
|
|
uint8_t *p;
|
|
p = p_end - 1;
|
|
if (p == p_start)
|
|
error("empty code for %s", name);
|
|
while (*p != 0xc3) {
|
|
p--;
|
|
if (p <= p_start)
|
|
error("ret or jmp expected at the end of %s", name);
|
|
}
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_PPC)
|
|
{
|
|
uint8_t *p;
|
|
p = (void *)(p_end - 4);
|
|
if (p == p_start)
|
|
error("empty code for %s", name);
|
|
if (get32((uint32_t *)p) != 0x4e800020)
|
|
error("blr expected at the end of %s", name);
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_S390)
|
|
{
|
|
uint8_t *p;
|
|
p = (void *)(p_end - 2);
|
|
if (p == p_start)
|
|
error("empty code for %s", name);
|
|
if (get16((uint16_t *)p) != 0x07fe && get16((uint16_t *)p) != 0x07f4)
|
|
error("br %%r14 expected at the end of %s", name);
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_ALPHA)
|
|
{
|
|
uint8_t *p;
|
|
p = p_end - 4;
|
|
#if 0
|
|
/* XXX: check why it occurs */
|
|
if (p == p_start)
|
|
error("empty code for %s", name);
|
|
#endif
|
|
if (get32((uint32_t *)p) != 0x6bfa8001)
|
|
error("ret expected at the end of %s", name);
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_IA64)
|
|
{
|
|
uint8_t *p;
|
|
p = (void *)(p_end - 4);
|
|
if (p == p_start)
|
|
error("empty code for %s", name);
|
|
/* br.ret.sptk.many b0;; */
|
|
/* 08 00 84 00 */
|
|
if (get32((uint32_t *)p) != 0x00840008)
|
|
error("br.ret.sptk.many b0;; expected at the end of %s", name);
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_SPARC)
|
|
{
|
|
uint32_t start_insn, end_insn1, end_insn2;
|
|
uint8_t *p;
|
|
p = (void *)(p_end - 8);
|
|
if (p <= p_start)
|
|
error("empty code for %s", name);
|
|
start_insn = get32((uint32_t *)(p_start + 0x0));
|
|
end_insn1 = get32((uint32_t *)(p + 0x0));
|
|
end_insn2 = get32((uint32_t *)(p + 0x4));
|
|
if ((start_insn & ~0x1fff) == 0x9de3a000) {
|
|
p_start += 0x4;
|
|
start_offset += 0x4;
|
|
if ((int)(start_insn | ~0x1fff) < -128)
|
|
error("Found bogus save at the start of %s", name);
|
|
if (end_insn1 != 0x81c7e008 || end_insn2 != 0x81e80000)
|
|
error("ret; restore; not found at end of %s", name);
|
|
} else {
|
|
error("No save at the beginning of %s", name);
|
|
}
|
|
#if 0
|
|
/* Skip a preceeding nop, if present. */
|
|
if (p > p_start) {
|
|
skip_insn = get32((uint32_t *)(p - 0x4));
|
|
if (skip_insn == 0x01000000)
|
|
p -= 4;
|
|
}
|
|
#endif
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_SPARC64)
|
|
{
|
|
uint32_t start_insn, end_insn1, end_insn2, skip_insn;
|
|
uint8_t *p;
|
|
p = (void *)(p_end - 8);
|
|
if (p <= p_start)
|
|
error("empty code for %s", name);
|
|
start_insn = get32((uint32_t *)(p_start + 0x0));
|
|
end_insn1 = get32((uint32_t *)(p + 0x0));
|
|
end_insn2 = get32((uint32_t *)(p + 0x4));
|
|
if ((start_insn & ~0x1fff) == 0x9de3a000) {
|
|
p_start += 0x4;
|
|
start_offset += 0x4;
|
|
if ((int)(start_insn | ~0x1fff) < -256)
|
|
error("Found bogus save at the start of %s", name);
|
|
if (end_insn1 != 0x81c7e008 || end_insn2 != 0x81e80000)
|
|
error("ret; restore; not found at end of %s", name);
|
|
} else {
|
|
error("No save at the beginning of %s", name);
|
|
}
|
|
|
|
/* Skip a preceeding nop, if present. */
|
|
if (p > p_start) {
|
|
skip_insn = get32((uint32_t *)(p - 0x4));
|
|
if (skip_insn == 0x01000000)
|
|
p -= 4;
|
|
}
|
|
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_ARM)
|
|
{
|
|
if ((p_end - p_start) <= 16)
|
|
error("%s: function too small", name);
|
|
if (get32((uint32_t *)p_start) != 0xe1a0c00d ||
|
|
(get32((uint32_t *)(p_start + 4)) & 0xffff0000) != 0xe92d0000 ||
|
|
get32((uint32_t *)(p_start + 8)) != 0xe24cb004)
|
|
error("%s: invalid prolog", name);
|
|
p_start += 12;
|
|
start_offset += 12;
|
|
copy_size = arm_emit_ldr_info(name, start_offset, NULL, p_start, p_end,
|
|
relocs, nb_relocs);
|
|
}
|
|
#elif defined(HOST_M68K)
|
|
{
|
|
uint8_t *p;
|
|
p = (void *)(p_end - 2);
|
|
if (p == p_start)
|
|
error("empty code for %s", name);
|
|
// remove NOP's, probably added for alignment
|
|
while ((get16((uint16_t *)p) == 0x4e71) &&
|
|
(p>p_start))
|
|
p -= 2;
|
|
if (get16((uint16_t *)p) != 0x4e75)
|
|
error("rts expected at the end of %s", name);
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_MIPS)
|
|
{
|
|
uint8_t *p;
|
|
p = (void *)(p_end - 4);
|
|
if (p == p_start)
|
|
error("empty code for %s", name);
|
|
while (p > p_start && get32((uint32_t *)p) != 0x03e00008)
|
|
p -= 4;
|
|
if (get32((uint32_t *)p) != 0x03e00008)
|
|
error("jr ra expected at the end of %s", name);
|
|
copy_size = p - p_start;
|
|
}
|
|
#else
|
|
#error unsupported CPU
|
|
#endif
|
|
|
|
|
|
|
|
/* compute the number of arguments by looking at the relocations */
|
|
for(i = 0;i < MAX_ARGS; i++)
|
|
args_present[i] = 0;
|
|
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
host_ulong offset = get_rel_offset(rel);
|
|
if (offset >= start_offset &&
|
|
offset < start_offset + (p_end - p_start)) {
|
|
sym_name = get_rel_sym_name(rel);
|
|
if(!sym_name)
|
|
continue;
|
|
nd = sizeof(demangled_buf);
|
|
demangled = cxx_demangle(sym_name, demangled_buf, &nd, &status);
|
|
if (!status && demangled)
|
|
sym_name = demangled;
|
|
if (is_op_param(sym_name, &p)) {
|
|
n = strtoul(p, NULL, 10);
|
|
if (n > MAX_ARGS)
|
|
error("too many arguments in %s", name);
|
|
args_present[n - 1] = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
nb_args = 0;
|
|
while (nb_args < MAX_ARGS && args_present[nb_args])
|
|
nb_args++;
|
|
for(i = nb_args; i < MAX_ARGS; i++) {
|
|
if (args_present[i])
|
|
error("inconsistent argument numbering in %s", name);
|
|
}
|
|
|
|
assert(gen_switch == 3);
|
|
if (gen_switch == 3) {
|
|
const char *func_name = name;
|
|
if (prefix && strstr(func_name, prefix) == func_name)
|
|
func_name += strlen(prefix);
|
|
|
|
fprintf(outfile, "DEFINE_GEN(gen_%s,void,(", func_name);
|
|
if (nb_args == 0) {
|
|
fprintf(outfile, "void");
|
|
} else {
|
|
for(i = 0; i < nb_args; i++) {
|
|
if (i != 0)
|
|
fprintf(outfile, ", ");
|
|
fprintf(outfile, "long param%d", i + 1);
|
|
}
|
|
}
|
|
fprintf(outfile, "))\n");
|
|
fprintf(outfile, "#ifdef DYNGEN_IMPL\n");
|
|
fprintf(outfile, "#define HAVE_gen_%s\n", func_name);
|
|
fprintf(outfile, "{\n");
|
|
print_code(outfile, name, p_start + start_offset - offset, copy_size);
|
|
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
host_ulong offset = get_rel_offset(rel);
|
|
if (offset >= start_offset &&
|
|
offset < start_offset + (p_end - p_start)) {
|
|
sym_name = get_rel_sym_name(rel);
|
|
if(!sym_name)
|
|
continue;
|
|
nd = sizeof(demangled_buf);
|
|
demangled = cxx_demangle(sym_name, demangled_buf, &nd, &status);
|
|
if (!status && demangled)
|
|
sym_name = demangled;
|
|
if (*sym_name &&
|
|
!is_op_param(sym_name, NULL) &&
|
|
!is_op_jmp(sym_name, NULL) &&
|
|
!strstart(sym_name, ".LC", NULL))
|
|
error("unexpected external symbol %s", sym_name);
|
|
}
|
|
}
|
|
|
|
fprintf(outfile, " copy_block(%s_code, %d);\n", name, copy_size);
|
|
|
|
/* emit code offset information */
|
|
{
|
|
EXE_SYM *sym;
|
|
const char *sym_name, *p;
|
|
unsigned long val;
|
|
int n;
|
|
|
|
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
sym_name = get_sym_name(sym);
|
|
if (strstart(sym_name, "__op_label", &p)) {
|
|
uint8_t *ptr;
|
|
unsigned long offset;
|
|
|
|
/* test if the variable refers to a label inside
|
|
the code we are generating */
|
|
#ifdef CONFIG_FORMAT_COFF
|
|
if (sym->st_shndx == text_shndx) {
|
|
ptr = sdata[coff_text_shndx];
|
|
} else if (sym->st_shndx == data_shndx) {
|
|
ptr = sdata[coff_data_shndx];
|
|
} else {
|
|
ptr = NULL;
|
|
}
|
|
#elif defined(CONFIG_FORMAT_MACH)
|
|
if(!sym->n_sect)
|
|
continue;
|
|
ptr = sdata[sym->n_sect-1];
|
|
#else
|
|
ptr = sdata[sym->st_shndx];
|
|
#endif
|
|
if (!ptr)
|
|
error("__op_labelN in invalid section");
|
|
offset = sym->st_value;
|
|
#ifdef CONFIG_FORMAT_MACH
|
|
offset -= section_hdr[sym->n_sect-1].addr;
|
|
#endif
|
|
val = *(unsigned long *)(ptr + offset);
|
|
#ifdef ELF_USES_RELOCA
|
|
{
|
|
int reloc_shndx, nb_relocs1, j;
|
|
|
|
/* try to find a matching relocation */
|
|
reloc_shndx = find_reloc(sym->st_shndx);
|
|
if (reloc_shndx) {
|
|
nb_relocs1 = shdr[reloc_shndx].sh_size /
|
|
shdr[reloc_shndx].sh_entsize;
|
|
rel = (ELF_RELOC *)sdata[reloc_shndx];
|
|
for(j = 0; j < nb_relocs1; j++) {
|
|
if (rel->r_offset == offset) {
|
|
val = rel->r_addend;
|
|
break;
|
|
}
|
|
rel++;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (val >= start_offset && val < start_offset + copy_size) {
|
|
n = strtol(p, NULL, 10);
|
|
fprintf(outfile, " label_offsets[%d] = %d + (code_ptr() - gen_code_buf);\n", n, val - start_offset);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* patch relocations */
|
|
patch_relocations(outfile, name, size, start_offset, copy_size);
|
|
fprintf(outfile, " inc_code_ptr(%d);\n", copy_size);
|
|
fprintf(outfile, "}\n");
|
|
fprintf(outfile, "#endif\n");
|
|
fprintf(outfile, "\n");
|
|
}
|
|
}
|
|
|
|
void patch_relocations(FILE *outfile, const char *name, host_ulong size, host_ulong start_offset, int copy_size)
|
|
{
|
|
EXE_RELOC *rel;
|
|
int i;
|
|
#if defined(HOST_I386)
|
|
#ifdef CONFIG_FORMAT_MACH
|
|
struct scattered_relocation_info *scarel;
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
const char *p;
|
|
int slide, sslide;
|
|
|
|
for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
|
|
unsigned int offset, length, value = 0;
|
|
unsigned int type, pcrel, isym = 0;
|
|
unsigned int usesym = 0;
|
|
|
|
if (R_SCATTERED & rel->r_address) {
|
|
scarel = (struct scattered_relocation_info*)rel;
|
|
offset = (unsigned int)scarel->r_address;
|
|
length = scarel->r_length;
|
|
pcrel = scarel->r_pcrel;
|
|
type = scarel->r_type;
|
|
value = scarel->r_value;
|
|
}
|
|
else {
|
|
value = isym = rel->r_symbolnum;
|
|
usesym = (rel->r_extern);
|
|
offset = rel->r_address;
|
|
length = rel->r_length;
|
|
pcrel = rel->r_pcrel;
|
|
type = rel->r_type;
|
|
}
|
|
|
|
slide = offset - start_offset;
|
|
|
|
if (!(offset >= start_offset && offset < start_offset + size))
|
|
continue; /* not in our range */
|
|
|
|
sym_name = get_reloc_name(rel, &sslide);
|
|
|
|
if (usesym && (symtab[isym].n_type & N_STAB))
|
|
continue; /* don't handle STAB (debug sym) */
|
|
|
|
if (sym_name && is_op_jmp(sym_name, &p)) {
|
|
int n;
|
|
n = strtol(p, NULL, 10);
|
|
fprintf(outfile, " jmp_addr[%d] = code_ptr() + %d;\n", n, slide);
|
|
continue; /* Nothing more to do */
|
|
}
|
|
|
|
if (!sym_name) {
|
|
fprintf(outfile, "/* #warning relocation not handled in %s (value 0x%x, %s, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
|
|
name, value, usesym ? "use sym" : "don't use sym", offset, length, pcrel ? "pcrel":"", type);
|
|
continue; /* dunno how to handle without final_sym_name */
|
|
}
|
|
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
|
|
if (length != 2)
|
|
error("unsupported %d-bit relocation", 8 * (1 << length));
|
|
|
|
switch (type) {
|
|
case GENERIC_RELOC_VANILLA:
|
|
if (pcrel) {
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s - (long)(code_ptr() + %d) - 4;\n",
|
|
slide, final_sym_name, slide);
|
|
}
|
|
else {
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = (%s + %d);\n",
|
|
slide, final_sym_name, sslide);
|
|
}
|
|
break;
|
|
default:
|
|
error("unsupported i386 relocation (%d)", type);
|
|
}
|
|
}
|
|
#else
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
const char *p;
|
|
int type;
|
|
int addend;
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
sym_name = get_rel_sym_name(rel);
|
|
if (is_op_jmp(sym_name, &p)) {
|
|
int n;
|
|
n = strtol(p, NULL, 10);
|
|
/* __op_jmp relocations are done at
|
|
runtime to do translated block
|
|
chaining: the offset of the instruction
|
|
needs to be stored */
|
|
fprintf(outfile, " jmp_addr[%d] = code_ptr() + %d;\n",
|
|
n, rel->r_offset - start_offset);
|
|
continue;
|
|
}
|
|
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
addend = get32((uint32_t *)(text + rel->r_offset));
|
|
#ifdef CONFIG_FORMAT_ELF
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
switch(type) {
|
|
case R_386_32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
rel->r_offset - start_offset, final_sym_name, addend);
|
|
break;
|
|
case R_386_PC32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s - (long)(code_ptr() + %d) + %d;\n",
|
|
rel->r_offset - start_offset, final_sym_name, rel->r_offset - start_offset, addend);
|
|
break;
|
|
default:
|
|
error("unsupported i386 relocation (%d)", type);
|
|
}
|
|
#elif defined(CONFIG_FORMAT_COFF)
|
|
{
|
|
char *temp_name;
|
|
int j;
|
|
EXE_SYM *sym;
|
|
temp_name = get_sym_name(symtab + *(uint32_t *)(rel->r_reloc->r_symndx));
|
|
if (!strcmp(temp_name, ".data")) {
|
|
for (j = 0, sym = symtab; j < nb_syms; j++, sym++) {
|
|
if (strstart(sym->st_name, sym_name, NULL)) {
|
|
addend -= sym->st_value;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
type = rel->r_type;
|
|
switch(type) {
|
|
case DIR32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
rel->r_offset - start_offset, final_sym_name, addend);
|
|
break;
|
|
case DISP32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s - (long)(code_ptr() + %d) + %d -4;\n",
|
|
rel->r_offset - start_offset, final_sym_name, rel->r_offset - start_offset, addend);
|
|
break;
|
|
default:
|
|
error("unsupported i386 relocation (%d)", type);
|
|
}
|
|
#else
|
|
#error unsupport object format for HOST_I386
|
|
#endif
|
|
}
|
|
}
|
|
#endif
|
|
#elif defined(HOST_X86_64)
|
|
#if defined(CONFIG_FORMAT_MACH)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
const char *p;
|
|
int slide, sslide;
|
|
int bytecount, bitlength;
|
|
int local16;
|
|
|
|
for (i = 0, rel = relocs, local16 = 0; i < nb_relocs; i++, rel++) {
|
|
unsigned int isym, usesym, offset, length, pcrel, type;
|
|
int adjustment = 0;
|
|
|
|
isym = rel->r_symbolnum;
|
|
usesym = rel->r_extern;
|
|
offset = rel->r_address;
|
|
length = rel->r_length;
|
|
pcrel = rel->r_pcrel;
|
|
type = rel->r_type;
|
|
|
|
if (usesym && (symtab[isym].n_type & N_STAB))
|
|
continue; /* don't handle STAB (debug sym) */
|
|
|
|
if (!(offset >= start_offset && offset < start_offset + size))
|
|
continue; /* not in our range */
|
|
|
|
if (length > 3)
|
|
error("unsupported %d-bit relocation", 8 * (1 << length));
|
|
|
|
bytecount = (1 << length);
|
|
bitlength = 8 * bytecount;
|
|
slide = offset - start_offset;
|
|
|
|
if (!usesym) {
|
|
// local reloc
|
|
sslide = get32((uint32_t *)(text + offset)) + rel->r_address + 4;
|
|
if ( literal16_sec_hdr
|
|
&& sslide >= literal16_sec_hdr->addr
|
|
&& sslide + 16 <= literal16_sec_hdr->addr + literal16_sec_hdr->size ) {
|
|
sprintf(final_sym_name, "literal16_%d", ++local16);
|
|
print_data(outfile, final_sym_name, literal16 + sslide - literal16_sec_hdr->addr, 16);
|
|
fprintf(outfile, " static uint8 *data_p_%d = NULL;\n", local16);
|
|
fprintf(outfile, " if (data_p_%d == NULL)\n", local16);
|
|
fprintf(outfile, " data_p_%d = copy_data(%s, %d);\n", local16, final_sym_name, 16);
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = (int32_t)((long)data_p_%d - (long)(code_ptr() + %d + %d));\n",
|
|
slide, local16, slide, bytecount);
|
|
} else {
|
|
fprintf(outfile, "/* #warning relocation not handled in %s (section %d, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
|
|
name, isym, offset, length, pcrel ? "pcrel":"", type);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
sym_name = get_reloc_name(rel, &sslide);
|
|
if (!sym_name) {
|
|
error("external symbol not found in %s (section %d, offset 0x%x, length 0x%x, %s, type 0x%x\n",
|
|
name, isym, offset, length, pcrel ? "pcrel":"", type);
|
|
}
|
|
|
|
if (is_op_jmp(sym_name, &p)) {
|
|
int n;
|
|
n = strtol(p, NULL, 10);
|
|
fprintf(outfile, " jmp_addr[%d] = code_ptr() + %d;\n", n, slide);
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = 0;\n", slide);
|
|
continue; /* Nothing more to do */
|
|
}
|
|
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
|
|
switch (type) {
|
|
case X86_64_RELOC_SIGNED_1: // Signed displacement with a -1 added.
|
|
adjustment = -1;
|
|
type = X86_64_RELOC_SIGNED;
|
|
break;
|
|
case X86_64_RELOC_SIGNED_2: // Signed displacement with a -2 added.
|
|
adjustment = -2;
|
|
type = X86_64_RELOC_SIGNED;
|
|
break;
|
|
case X86_64_RELOC_SIGNED_4: // Signed displacement with a -4 added.
|
|
adjustment = -4;
|
|
type = X86_64_RELOC_SIGNED;
|
|
break;
|
|
}
|
|
|
|
if (pcrel || is_op_gen_label(sym_name, &p)) {
|
|
switch (type) {
|
|
case X86_64_RELOC_UNSIGNED: // for absolute addresses
|
|
case X86_64_RELOC_SIGNED: // for signed 32-bit displacement
|
|
case X86_64_RELOC_BRANCH: // a CALL/JMP instruction with 32-bit displacement
|
|
fprintf(outfile, " *(uint%d_t *)(code_ptr() + %d) = (int%d_t)((long)%s - (long)(code_ptr() + %d + %d)) + %d;\n",
|
|
bitlength, slide, bitlength, final_sym_name, slide, bytecount, sslide + adjustment);
|
|
break;
|
|
default:
|
|
error("unsupported x86_64 relocation (%d) in %s\n", type, sym_name);
|
|
}
|
|
} else {
|
|
switch (type) {
|
|
case X86_64_RELOC_UNSIGNED: // for absolute addresses
|
|
fprintf(outfile, " *(uint%d_t *)(code_ptr() + %d) = (uint%d_t)%s + %d;\n",
|
|
bitlength, slide, bitlength, final_sym_name, sslide);
|
|
break;
|
|
case X86_64_RELOC_SIGNED: // for signed 32-bit displacement
|
|
fprintf(outfile, " *(uint%d_t *)(code_ptr() + %d) = (int%d_t)%s + %d;\n",
|
|
bitlength, slide, bitlength, final_sym_name, sslide + adjustment);
|
|
break;
|
|
default:
|
|
error("unsupported x86_64 relocation (%d) in %s\n", type, sym_name);
|
|
}
|
|
}
|
|
}
|
|
#elif defined (CONFIG_FORMAT_ELF)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
const char *p;
|
|
int type;
|
|
int addend;
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
int slide;
|
|
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
|
|
if (is_op_jmp(sym_name, &p)) {
|
|
int n;
|
|
n = strtol(p, NULL, 10);
|
|
/* __op_jmp relocations are done at
|
|
runtime to do translated block
|
|
chaining: the offset of the instruction
|
|
needs to be stored */
|
|
fprintf(outfile, " jmp_addr[%d] = code_ptr() + %d;\n",
|
|
n, rel->r_offset - start_offset);
|
|
continue;
|
|
}
|
|
|
|
slide = rel->r_offset - start_offset;
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
switch(type) {
|
|
case R_X86_64_64:
|
|
fprintf(outfile, " *(uintptr *)(code_ptr() + %d) = (uintptr)%s + %d;\n", slide, final_sym_name, addend);
|
|
break;
|
|
case R_X86_64_32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = (uint32_t)%s + %d;\n", slide, final_sym_name, addend);
|
|
break;
|
|
case R_X86_64_32S:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = (int32_t)%s + %d;\n", slide, final_sym_name, addend);
|
|
break;
|
|
case R_X86_64_PC32:
|
|
case R_X86_64_PLT32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s - (long)(code_ptr() + %d) + %d;\n",
|
|
slide, final_sym_name, slide, addend);
|
|
break;
|
|
default:
|
|
error("unsupported AMD64 relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
#error unsupport object format for HOST_X86_64
|
|
#endif
|
|
#elif defined(HOST_PPC)
|
|
#ifdef CONFIG_FORMAT_ELF
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
int slide;
|
|
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
|
|
if (is_op_jmp(sym_name, &p)) {
|
|
int n;
|
|
n = strtol(p, NULL, 10);
|
|
/* __op_jmp relocations are done at
|
|
runtime to do translated block
|
|
chaining: the offset of the instruction
|
|
needs to be stored */
|
|
fprintf(outfile, " jmp_addr[%d] = code_ptr() + %d;\n",
|
|
n, rel->r_offset - start_offset);
|
|
continue;
|
|
}
|
|
|
|
slide = rel->r_offset - start_offset;
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
switch(type) {
|
|
case R_PPC_ADDR32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
slide, final_sym_name, addend);
|
|
break;
|
|
case R_PPC_ADDR16_LO:
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d) = (%s + %d);\n",
|
|
slide, final_sym_name, addend);
|
|
break;
|
|
case R_PPC_ADDR16_HI:
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d) = (%s + %d) >> 16;\n",
|
|
slide, final_sym_name, addend);
|
|
break;
|
|
case R_PPC_ADDR16_HA:
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d) = (%s + %d + 0x8000) >> 16;\n",
|
|
slide, final_sym_name, addend);
|
|
break;
|
|
case R_PPC_REL24:
|
|
/* warning: must be at 32 MB distancy */
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = (*(uint32_t *)(code_ptr() + %d) & ~0x03fffffc) | ((%s - (long)(code_ptr() + %d) + %d) & 0x03fffffc);\n",
|
|
slide, slide, final_sym_name, slide, addend);
|
|
break;
|
|
default:
|
|
error("unsupported powerpc relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(CONFIG_FORMAT_MACH)
|
|
struct scattered_relocation_info *scarel;
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
const char *p;
|
|
int slide, sslide;
|
|
|
|
for(i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
|
|
unsigned int offset, length, value = 0;
|
|
unsigned int type, pcrel, isym = 0;
|
|
unsigned int usesym = 0;
|
|
|
|
if(R_SCATTERED & rel->r_address) {
|
|
scarel = (struct scattered_relocation_info*)rel;
|
|
offset = (unsigned int)scarel->r_address;
|
|
length = scarel->r_length;
|
|
pcrel = scarel->r_pcrel;
|
|
type = scarel->r_type;
|
|
value = scarel->r_value;
|
|
} else {
|
|
value = isym = rel->r_symbolnum;
|
|
usesym = (rel->r_extern);
|
|
offset = rel->r_address;
|
|
length = rel->r_length;
|
|
pcrel = rel->r_pcrel;
|
|
type = rel->r_type;
|
|
}
|
|
|
|
slide = offset - start_offset;
|
|
|
|
if (!(offset >= start_offset && offset < start_offset + size))
|
|
continue; /* not in our range */
|
|
|
|
sym_name = get_reloc_name(rel, &sslide);
|
|
|
|
if(usesym && (symtab[isym].n_type & N_STAB))
|
|
continue; /* don't handle STAB (debug sym) */
|
|
|
|
if (sym_name && is_op_jmp(sym_name, &p)) {
|
|
int n;
|
|
n = strtol(p, NULL, 10);
|
|
fprintf(outfile, " jmp_addr[%d] = code_ptr() + %d;\n",
|
|
n, slide);
|
|
continue; /* Nothing more to do */
|
|
}
|
|
|
|
if(!sym_name)
|
|
{
|
|
fprintf(outfile, "/* #warning relocation not handled in %s (value 0x%x, %s, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
|
|
name, value, usesym ? "use sym" : "don't use sym", offset, length, pcrel ? "pcrel":"", type);
|
|
continue; /* dunno how to handle without final_sym_name */
|
|
}
|
|
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
|
|
switch(type) {
|
|
case PPC_RELOC_BR24:
|
|
if (!is_op_param(sym_name, &p)) {
|
|
fprintf(outfile, "{\n");
|
|
fprintf(outfile, " uint32_t imm = *(uint32_t *)(code_ptr() + %d) & 0x3fffffc;\n", slide);
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = (*(uint32_t *)(code_ptr() + %d) & ~0x03fffffc) | ((imm + ((long)%s - (long)code_ptr()) + %d) & 0x03fffffc);\n",
|
|
slide, slide, final_sym_name, sslide );
|
|
fprintf(outfile, "}\n");
|
|
} else {
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = (*(uint32_t *)(code_ptr() + %d) & ~0x03fffffc) | (((long)%s - (long)code_ptr() - %d) & 0x03fffffc);\n",
|
|
slide, slide, final_sym_name, slide);
|
|
}
|
|
break;
|
|
case PPC_RELOC_HI16:
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d + 2) = (%s + %d) >> 16;\n",
|
|
slide, final_sym_name, sslide);
|
|
break;
|
|
case PPC_RELOC_LO16:
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d + 2) = (%s + %d);\n",
|
|
slide, final_sym_name, sslide);
|
|
break;
|
|
case PPC_RELOC_HA16:
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d + 2) = (%s + %d + 0x8000) >> 16;\n",
|
|
slide, final_sym_name, sslide);
|
|
break;
|
|
default:
|
|
error("unsupported powerpc relocation (%d)", type);
|
|
}
|
|
}
|
|
#else
|
|
#error unsupport object format
|
|
#endif
|
|
#elif defined(HOST_S390)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
int type;
|
|
int addend;
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
int slide;
|
|
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
slide = rel->r_offset - start_offset;
|
|
addend = rel->r_addend;
|
|
switch(type) {
|
|
case R_390_32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
slide, final_sym_name, addend);
|
|
break;
|
|
case R_390_16:
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
slide, final_sym_name, addend);
|
|
break;
|
|
case R_390_8:
|
|
fprintf(outfile, " *(uint8_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
slide, final_sym_name, addend);
|
|
break;
|
|
default:
|
|
error("unsupported s390 relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_ALPHA)
|
|
for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
|
|
int type;
|
|
|
|
type = ELF64_R_TYPE(rel->r_info);
|
|
sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
|
|
switch (type) {
|
|
case R_ALPHA_GPDISP:
|
|
/* The gp is just 32 bit, and never changes, so it's easiest to emit it
|
|
as an immediate instead of constructing it from the pv or ra. */
|
|
fprintf(outfile, " immediate_ldah(code_ptr() + %ld, gp);\n",
|
|
rel->r_offset - start_offset);
|
|
fprintf(outfile, " immediate_lda(code_ptr() + %ld, gp);\n",
|
|
rel->r_offset - start_offset + rel->r_addend);
|
|
break;
|
|
case R_ALPHA_LITUSE:
|
|
/* jsr to literal hint. Could be used to optimize to bsr. Ignore for
|
|
now, since some called functions (libc) need pv to be set up. */
|
|
break;
|
|
case R_ALPHA_HINT:
|
|
/* Branch target prediction hint. Ignore for now. Should be already
|
|
correct for in-function jumps. */
|
|
break;
|
|
case R_ALPHA_LITERAL:
|
|
/* Load a literal from the GOT relative to the gp. Since there's only a
|
|
single gp, nothing is to be done. */
|
|
break;
|
|
case R_ALPHA_GPRELHIGH:
|
|
/* Handle fake relocations against __op_PARAM symbol. Need to emit the
|
|
high part of the immediate value instead. Other symbols need no
|
|
special treatment. */
|
|
if (is_op_param(sym_name, &p))
|
|
fprintf(outfile, " immediate_ldah(code_ptr() + %ld, param%s);\n",
|
|
rel->r_offset - start_offset, p);
|
|
break;
|
|
case R_ALPHA_GPRELLOW:
|
|
if (is_op_param(sym_name, &p))
|
|
fprintf(outfile, " immediate_lda(code_ptr() + %ld, param%s);\n",
|
|
rel->r_offset - start_offset, p);
|
|
break;
|
|
case R_ALPHA_BRSGP:
|
|
/* PC-relative jump. Tweak offset to skip the two instructions that try to
|
|
set up the gp from the pv. */
|
|
fprintf(outfile, " fix_bsr(code_ptr() + %ld, (uint8_t *) &%s - (code_ptr() + %ld + 4) + 8);\n",
|
|
rel->r_offset - start_offset, sym_name, rel->r_offset - start_offset);
|
|
break;
|
|
default:
|
|
error("unsupported Alpha relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_IA64)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
int type;
|
|
int addend;
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
|
|
sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
type = ELF64_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
switch(type) {
|
|
case R_IA64_LTOFF22:
|
|
error("must implement R_IA64_LTOFF22 relocation");
|
|
case R_IA64_PCREL21B:
|
|
error("must implement R_IA64_PCREL21B relocation");
|
|
default:
|
|
error("unsupported ia64 relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_SPARC)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
const char *p;
|
|
int type;
|
|
int addend;
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
|
|
if (is_op_param(sym_name, &p)) {
|
|
snprintf(final_sym_name, sizeof(final_sym_name), "param%s", p);
|
|
} else {
|
|
if (sym_name[0] == '.')
|
|
snprintf(final_sym_name, sizeof(final_sym_name),
|
|
"(long)(&__dot_%s)",
|
|
sym_name + 1);
|
|
else
|
|
snprintf(final_sym_name, sizeof(final_sym_name),
|
|
"(long)(&%s)", sym_name);
|
|
}
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
switch(type) {
|
|
case R_SPARC_32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
rel->r_offset - start_offset, final_sym_name, addend);
|
|
break;
|
|
case R_SPARC_HI22:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(code_ptr() + %d) = "
|
|
"((*(uint32_t *)(code_ptr() + %d)) "
|
|
" & ~0x3fffff) "
|
|
" | (((%s + %d) >> 10) & 0x3fffff);\n",
|
|
rel->r_offset - start_offset,
|
|
rel->r_offset - start_offset,
|
|
final_sym_name, addend);
|
|
break;
|
|
case R_SPARC_LO10:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(code_ptr() + %d) = "
|
|
"((*(uint32_t *)(code_ptr() + %d)) "
|
|
" & ~0x3ff) "
|
|
" | ((%s + %d) & 0x3ff);\n",
|
|
rel->r_offset - start_offset,
|
|
rel->r_offset - start_offset,
|
|
final_sym_name, addend);
|
|
break;
|
|
case R_SPARC_WDISP30:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(code_ptr() + %d) = "
|
|
"((*(uint32_t *)(code_ptr() + %d)) "
|
|
" & ~0x3fffffff) "
|
|
" | ((((%s + %d) - (long)(code_ptr() + %d))>>2) "
|
|
" & 0x3fffffff);\n",
|
|
rel->r_offset - start_offset,
|
|
rel->r_offset - start_offset,
|
|
final_sym_name, addend,
|
|
rel->r_offset - start_offset);
|
|
break;
|
|
default:
|
|
error("unsupported sparc relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_SPARC64)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
int type;
|
|
int addend;
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
type = ELF64_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
switch(type) {
|
|
case R_SPARC_32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
rel->r_offset - start_offset, final_sym_name, addend);
|
|
break;
|
|
case R_SPARC_HI22:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(code_ptr() + %d) = "
|
|
"((*(uint32_t *)(code_ptr() + %d)) "
|
|
" & ~0x3fffff) "
|
|
" | (((%s + %d) >> 10) & 0x3fffff);\n",
|
|
rel->r_offset - start_offset,
|
|
rel->r_offset - start_offset,
|
|
final_sym_name, addend);
|
|
break;
|
|
case R_SPARC_LO10:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(code_ptr() + %d) = "
|
|
"((*(uint32_t *)(code_ptr() + %d)) "
|
|
" & ~0x3ff) "
|
|
" | ((%s + %d) & 0x3ff);\n",
|
|
rel->r_offset - start_offset,
|
|
rel->r_offset - start_offset,
|
|
final_sym_name, addend);
|
|
break;
|
|
case R_SPARC_WDISP30:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(code_ptr() + %d) = "
|
|
"((*(uint32_t *)(code_ptr() + %d)) "
|
|
" & ~0x3fffffff) "
|
|
" | ((((%s + %d) - (long)(code_ptr() + %d))>>2) "
|
|
" & 0x3fffffff);\n",
|
|
rel->r_offset - start_offset,
|
|
rel->r_offset - start_offset,
|
|
final_sym_name, addend,
|
|
rel->r_offset - start_offset);
|
|
break;
|
|
default:
|
|
error("unsupported sparc64 relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_ARM)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
int type;
|
|
int addend;
|
|
|
|
arm_emit_ldr_info(final_sym_name, start_offset, outfile, p_start, p_end,
|
|
relocs, nb_relocs);
|
|
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
|
|
/* the compiler leave some unnecessary references to the code */
|
|
if (sym_name[0] == '\0')
|
|
continue;
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = get32((uint32_t *)(text + rel->r_offset));
|
|
switch(type) {
|
|
case R_ARM_ABS32:
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s + %d;\n",
|
|
rel->r_offset - start_offset, final_sym_name, addend);
|
|
break;
|
|
case R_ARM_PC24:
|
|
fprintf(outfile, " arm_reloc_pc24((uint32_t *)(code_ptr() + %d), 0x%x, %s);\n",
|
|
rel->r_offset - start_offset, addend, final_sym_name);
|
|
break;
|
|
default:
|
|
error("unsupported arm relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_M68K)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
int type;
|
|
int addend;
|
|
Elf32_Sym *sym;
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
sym = &(symtab[ELFW(R_SYM)(rel->r_info)]);
|
|
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = get32((uint32_t *)(text + rel->r_offset)) + rel->r_addend;
|
|
switch(type) {
|
|
case R_68K_32:
|
|
fprintf(outfile, " /* R_68K_32 RELOC, offset %x */\n", rel->r_offset) ;
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s + %#x;\n",
|
|
rel->r_offset - start_offset, final_sym_name, addend );
|
|
break;
|
|
case R_68K_PC32:
|
|
fprintf(outfile, " /* R_68K_PC32 RELOC, offset %x */\n", rel->r_offset);
|
|
fprintf(outfile, " *(uint32_t *)(code_ptr() + %d) = %s - (long)(code_ptr() + %#x) + %#x;\n",
|
|
rel->r_offset - start_offset, final_sym_name, rel->r_offset - start_offset, /*sym->st_value+*/ addend);
|
|
break;
|
|
default:
|
|
error("unsupported m68k relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_MIPS)
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
int type;
|
|
int addend;
|
|
for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset &&
|
|
rel->r_offset < start_offset + copy_size) {
|
|
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
|
|
if (is_op_jmp(sym_name, &p)) {
|
|
int n;
|
|
n = strtol(p, NULL, 10);
|
|
/* __op_jmp relocations are done at
|
|
runtime to do translated block
|
|
chaining: the offset of the instruction
|
|
needs to be stored */
|
|
fprintf(outfile, " jmp_addr[%d] = code_ptr() + %d;\n",
|
|
n, rel->r_offset - start_offset);
|
|
continue;
|
|
}
|
|
|
|
get_reloc_expr(final_sym_name, sizeof(final_sym_name), sym_name);
|
|
type = ELFW(R_TYPE)(rel->r_info);
|
|
addend = rel->r_addend;
|
|
if (addend)
|
|
error("non zero addend (%d), deal with this", addend);
|
|
switch (type) {
|
|
case R_MIPS_HI16:
|
|
fprintf(outfile, " /* R_MIPS_HI16 reloc, offset %x */\n", rel->r_offset);
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d) = (uint16_t)((uint32_t)(%s)>>16);\n",
|
|
rel->r_offset - start_offset + 2, final_sym_name);
|
|
break;
|
|
case R_MIPS_LO16:
|
|
fprintf(outfile, " /* R_MIPS_LO16 reloc, offset %x */\n", rel->r_offset);
|
|
fprintf(outfile, " *(uint16_t *)(code_ptr() + %d) = (uint16_t)((uint32_t)(%s)&0xffff);\n",
|
|
rel->r_offset - start_offset + 2, final_sym_name);
|
|
break;
|
|
default:
|
|
error("unsupported MIPS relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
#error unsupported CPU
|
|
#endif
|
|
}
|
|
|
|
int gen_file(FILE *outfile, int out_type)
|
|
{
|
|
int i;
|
|
EXE_SYM *sym;
|
|
|
|
assert(out_type == OUT_GEN_OP_ALL);
|
|
if (out_type == OUT_GEN_OP_ALL) {
|
|
int status;
|
|
size_t nf, nd = 256;
|
|
char *demangled_name, *func_name;
|
|
if ((demangled_name = malloc(nd)) == NULL)
|
|
return -1;
|
|
if ((func_name = malloc(nf = nd)) == NULL) {
|
|
free(demangled_name);
|
|
return -1;
|
|
}
|
|
|
|
fprintf(outfile, "#ifndef DEFINE_CST\n");
|
|
fprintf(outfile, "#define DEFINE_CST(NAME, VALUE)\n");
|
|
fprintf(outfile, "#endif\n");
|
|
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
const char *name;
|
|
name = get_sym_name(sym);
|
|
if (strstart(name, OP_PREFIX "execute", NULL)) {
|
|
/* skip Exception handlers */
|
|
if (strchr(name, '.'))
|
|
continue;
|
|
strcpy(func_name, name);
|
|
#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
|
|
if (sym->st_shndx != text_shndx)
|
|
error("invalid section for opcode (0x%x)", sym->st_shndx);
|
|
#endif
|
|
gen_code(func_name, NULL, sym->st_value, sym->st_size, outfile, 3, NULL);
|
|
}
|
|
else if (strstart(name, OP_PREFIX "exec_return_offset", NULL)) {
|
|
host_ulong *long_p;
|
|
#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
|
|
if (sym->st_shndx != data_shndx)
|
|
error("invalid section for data (0x%x)", sym->st_shndx);
|
|
#endif
|
|
if (data == NULL)
|
|
error("no .data section found");
|
|
#ifdef CONFIG_FORMAT_MACH
|
|
fprintf(outfile, "DEFINE_CST(%s,0x%xL)\n\n", name, *((host_ulong *)(data + sym->st_value - data_sec_hdr->addr)));
|
|
#else
|
|
fprintf(outfile, "DEFINE_CST(%s,0x%xL)\n\n", name, *((host_ulong *)(data + sym->st_value)));
|
|
#endif
|
|
}
|
|
else if (strstart(name, OP_PREFIX "invoke", NULL)) {
|
|
const char *prefix = "helper_";
|
|
strcpy(func_name, prefix);
|
|
strcat(func_name, name);
|
|
#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
|
|
if (sym->st_shndx != text_shndx)
|
|
error("invalid section for opcode (0x%x)", sym->st_shndx);
|
|
#endif
|
|
gen_code(func_name, NULL, sym->st_value, sym->st_size, outfile, 3, prefix);
|
|
}
|
|
else {
|
|
/* demangle C++ symbols */
|
|
nd = 256;
|
|
demangled_name = cxx_demangle(name, demangled_name, &nd, &status);
|
|
if (status == 0 && strstart(demangled_name, OP_PREFIX, NULL)) {
|
|
/* get real function name */
|
|
char *p = strchr(demangled_name, '(');
|
|
if (p && !strstart(p, "()::label", NULL)) {
|
|
int func_name_length = p - demangled_name;
|
|
if (nd > nf) {
|
|
char *new_func_name;
|
|
nf = nd;
|
|
if ((new_func_name = realloc(func_name, nf)) == NULL) {
|
|
free(func_name);
|
|
return -1;
|
|
}
|
|
func_name = new_func_name;
|
|
}
|
|
strncpy(func_name, demangled_name, func_name_length);
|
|
func_name[func_name_length] = '\0';
|
|
/* emit code generator */
|
|
#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
|
|
if (sym->st_shndx != text_shndx)
|
|
error("invalid section for opcode (%s:0x%x)", name, sym->st_shndx);
|
|
#endif
|
|
gen_code(func_name, demangled_name, sym->st_value, sym->st_size, outfile, 3, NULL);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
fprintf(outfile, "#undef DEFINE_CST\n");
|
|
fprintf(outfile, "#undef DEFINE_GEN\n");
|
|
|
|
free(func_name);
|
|
free(demangled_name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void usage(void)
|
|
{
|
|
printf("dyngen (c) 2003-2004 Fabrice Bellard\n"
|
|
"usage: dyngen [-o outfile] objfile\n"
|
|
"Generate a dynamic code generator from an object file\n"
|
|
);
|
|
exit(1);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int c, out_type;
|
|
const char *filename, *outfilename;
|
|
FILE *outfile;
|
|
|
|
outfilename = "out.c";
|
|
out_type = OUT_GEN_OP_ALL;
|
|
for(;;) {
|
|
c = getopt(argc, argv, "ho:");
|
|
if (c == -1)
|
|
break;
|
|
switch(c) {
|
|
case 'h':
|
|
usage();
|
|
break;
|
|
case 'o':
|
|
outfilename = optarg;
|
|
break;
|
|
}
|
|
}
|
|
if (optind >= argc)
|
|
usage();
|
|
filename = argv[optind];
|
|
outfile = fopen(outfilename, "w");
|
|
if (!outfile)
|
|
error("could not open '%s'", outfilename);
|
|
|
|
load_object(filename, outfile);
|
|
gen_file(outfile, out_type);
|
|
fclose(outfile);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
Local variables:
|
|
tab-width: 4
|
|
indent-tabs-mode: nil
|
|
End:
|
|
*/
|