a2a64a1f2d
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4501 c046a42c-6fe2-441c-8c8c-71466251a162
2762 lines
90 KiB
C
2762 lines
90 KiB
C
/*
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* Generic Dynamic compiler generator
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*
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* Copyright (c) 2003 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 "config-host.h"
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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_HPPA)
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#define ELF_CLASS ELFCLASS32
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#define ELF_ARCH EM_PARISC
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#define elf_check_arch(x) ((x) == EM_PARISC)
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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_RELOC
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#elif defined(HOST_MIPS64)
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/* Assume n32 ABI here, which is ELF32. */
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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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#else
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#error unsupported CPU - please update the code
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#endif
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#include "elf.h"
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#if ELF_CLASS == ELFCLASS32
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typedef int32_t host_long;
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typedef uint32_t host_ulong;
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#define swabls(x) swab32s(x)
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#define swablss(x) swab32ss(x)
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#else
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typedef int64_t host_long;
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typedef uint64_t host_ulong;
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#define swabls(x) swab64s(x)
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#define swablss(x) swab64ss(x)
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#endif
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#ifdef ELF_USES_RELOCA
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#define SHT_RELOC SHT_RELA
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#else
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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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typedef int32_t host_long;
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typedef uint32_t host_ulong;
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#include "a.out.h"
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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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# define check_mach_header(x) (x.magic == MH_MAGIC)
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typedef int32_t host_long;
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typedef uint32_t host_ulong;
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struct nlist_extended
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{
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union {
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char *n_name;
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long n_strx;
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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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#include "bswap.h"
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enum {
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OUT_GEN_OP,
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OUT_CODE,
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OUT_INDEX_OP,
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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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static 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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static 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 = bswap16(*p);
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}
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void swab32s(uint32_t *p)
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{
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*p = bswap32(*p);
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}
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void swab32ss(int32_t *p)
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{
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*p = bswap32(*p);
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}
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void swab64s(uint64_t *p)
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{
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*p = bswap64(*p);
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}
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void swab64ss(int64_t *p)
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{
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*p = bswap64(*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 = bswap16(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 = bswap32(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 = bswap16(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 = bswap32(val);
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*p = val;
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}
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/* executable information */
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EXE_SYM *symtab;
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int nb_syms;
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int text_shndx;
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uint8_t *text;
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EXE_RELOC *relocs;
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int nb_relocs;
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#ifdef CONFIG_FORMAT_ELF
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/* ELF file info */
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struct elf_shdr *shdr;
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uint8_t **sdata;
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struct elfhdr ehdr;
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char *strtab;
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int elf_must_swap(struct elfhdr *h)
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{
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union {
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uint32_t i;
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uint8_t b[4];
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} swaptest;
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swaptest.i = 1;
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return (h->e_ident[EI_DATA] == ELFDATA2MSB) !=
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(swaptest.b[0] == 0);
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}
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void elf_swap_ehdr(struct elfhdr *h)
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{
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swab16s(&h->e_type); /* Object file type */
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swab16s(&h-> e_machine); /* Architecture */
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swab32s(&h-> e_version); /* Object file version */
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swabls(&h-> e_entry); /* Entry point virtual address */
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swabls(&h-> e_phoff); /* Program header table file offset */
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swabls(&h-> e_shoff); /* Section header table file offset */
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swab32s(&h-> e_flags); /* Processor-specific flags */
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swab16s(&h-> e_ehsize); /* ELF header size in bytes */
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swab16s(&h-> e_phentsize); /* Program header table entry size */
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swab16s(&h-> e_phnum); /* Program header table entry count */
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swab16s(&h-> e_shentsize); /* Section header table entry size */
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swab16s(&h-> e_shnum); /* Section header table entry count */
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swab16s(&h-> e_shstrndx); /* Section header string table index */
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}
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void elf_swap_shdr(struct elf_shdr *h)
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{
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swab32s(&h-> sh_name); /* Section name (string tbl index) */
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swab32s(&h-> sh_type); /* Section type */
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swabls(&h-> sh_flags); /* Section flags */
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swabls(&h-> sh_addr); /* Section virtual addr at execution */
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swabls(&h-> sh_offset); /* Section file offset */
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swabls(&h-> sh_size); /* Section size in bytes */
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swab32s(&h-> sh_link); /* Link to another section */
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swab32s(&h-> sh_info); /* Additional section information */
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swabls(&h-> sh_addralign); /* Section alignment */
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swabls(&h-> sh_entsize); /* Entry size if section holds table */
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}
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void elf_swap_phdr(struct elf_phdr *h)
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{
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swab32s(&h->p_type); /* Segment type */
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swabls(&h->p_offset); /* Segment file offset */
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swabls(&h->p_vaddr); /* Segment virtual address */
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swabls(&h->p_paddr); /* Segment physical address */
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swabls(&h->p_filesz); /* Segment size in file */
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swabls(&h->p_memsz); /* Segment size in memory */
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swab32s(&h->p_flags); /* Segment flags */
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swabls(&h->p_align); /* Segment alignment */
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}
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void elf_swap_rel(ELF_RELOC *rel)
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{
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swabls(&rel->r_offset);
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swabls(&rel->r_info);
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#ifdef ELF_USES_RELOCA
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swablss(&rel->r_addend);
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#endif
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}
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struct elf_shdr *find_elf_section(struct elf_shdr *shdr, int shnum, const char *shstr,
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const char *name)
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{
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int i;
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const char *shname;
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struct elf_shdr *sec;
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for(i = 0; i < shnum; i++) {
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sec = &shdr[i];
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if (!sec->sh_name)
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continue;
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shname = shstr + sec->sh_name;
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if (!strcmp(shname, name))
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return sec;
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}
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return NULL;
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}
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int find_reloc(int sh_index)
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{
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struct elf_shdr *sec;
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int i;
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for(i = 0; i < ehdr.e_shnum; i++) {
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sec = &shdr[i];
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if (sec->sh_type == SHT_RELOC && sec->sh_info == sh_index)
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return i;
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}
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return 0;
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}
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static host_ulong get_rel_offset(EXE_RELOC *rel)
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{
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return rel->r_offset;
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}
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static char *get_rel_sym_name(EXE_RELOC *rel)
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{
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return strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
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}
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static char *get_sym_name(EXE_SYM *sym)
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{
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return strtab + sym->st_name;
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}
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/* load an elf object file */
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int load_object(const char *filename)
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{
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int fd;
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struct elf_shdr *sec, *symtab_sec, *strtab_sec, *text_sec;
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int i, j;
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ElfW(Sym) *sym;
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char *shstr;
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ELF_RELOC *rel;
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fd = open(filename, O_RDONLY);
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if (fd < 0)
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error("can't open file '%s'", filename);
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/* Read ELF header. */
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if (read(fd, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
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error("unable to read file header");
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/* Check ELF identification. */
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if (ehdr.e_ident[EI_MAG0] != ELFMAG0
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|| ehdr.e_ident[EI_MAG1] != ELFMAG1
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|| ehdr.e_ident[EI_MAG2] != ELFMAG2
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|| ehdr.e_ident[EI_MAG3] != ELFMAG3
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|| ehdr.e_ident[EI_VERSION] != EV_CURRENT) {
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error("bad ELF header");
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}
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do_swap = elf_must_swap(&ehdr);
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if (do_swap)
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elf_swap_ehdr(&ehdr);
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if (ehdr.e_ident[EI_CLASS] != ELF_CLASS)
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error("Unsupported ELF class");
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if (ehdr.e_type != ET_REL)
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error("ELF object file expected");
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if (ehdr.e_version != EV_CURRENT)
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error("Invalid ELF version");
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if (!elf_check_arch(ehdr.e_machine))
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error("Unsupported CPU (e_machine=%d)", ehdr.e_machine);
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/* read section headers */
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shdr = load_data(fd, ehdr.e_shoff, ehdr.e_shnum * sizeof(struct elf_shdr));
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if (do_swap) {
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for(i = 0; i < ehdr.e_shnum; i++) {
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elf_swap_shdr(&shdr[i]);
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}
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}
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/* read all section data */
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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 = (char *)sdata[ehdr.e_shstrndx];
|
|
|
|
/* swap relocations */
|
|
for(i = 0; i < ehdr.e_shnum; i++) {
|
|
sec = &shdr[i];
|
|
if (sec->sh_type == SHT_RELOC) {
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
/* 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;
|
|
}
|
|
|
|
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 = (char *)sdata[symtab_sec->sh_link];
|
|
|
|
nb_syms = symtab_sec->sh_size / sizeof(ElfW(Sym));
|
|
if (do_swap) {
|
|
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
swab32s(&sym->st_name);
|
|
swabls(&sym->st_value);
|
|
swabls(&sym->st_size);
|
|
swab16s(&sym->st_shndx);
|
|
}
|
|
}
|
|
close(fd);
|
|
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;
|
|
|
|
int 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);
|
|
if (name[0] == '.')
|
|
return NULL;
|
|
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)
|
|
{
|
|
int fd;
|
|
struct external_scnhdr *sec, *text_sec, *data_sec;
|
|
int i;
|
|
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;
|
|
const char *p;
|
|
int aux_size, j;
|
|
|
|
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);
|
|
|
|
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;
|
|
|
|
coff_symtab = load_data(fd, fhdr.f_symptr, fhdr.f_nsyms*SYMESZ);
|
|
for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
|
|
for(i=0;i<8;i++)
|
|
printf(" %02x", ((uint8_t *)ext_sym->e.e_name)[i]);
|
|
printf("\n");
|
|
}
|
|
|
|
|
|
n_strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), STRTAB_SIZE);
|
|
strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), *n_strtab);
|
|
|
|
nb_syms = fhdr.f_nsyms;
|
|
|
|
for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
|
|
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);
|
|
|
|
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;
|
|
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;
|
|
int other_half=0;
|
|
|
|
/* init the slide value */
|
|
*sslide = 0;
|
|
|
|
if(R_SCATTERED & rel->r_address)
|
|
return (char *)find_reloc_name_given_its_address(sca_rel->r_value);
|
|
|
|
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]);
|
|
}
|
|
|
|
/* 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_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;
|
|
default:
|
|
error("switch(rel->type) not found");
|
|
}
|
|
|
|
if(rel->r_pcrel)
|
|
sectoffset += rel->r_address;
|
|
|
|
if (rel->r_type == PPC_RELOC_BR24)
|
|
name = (char *)find_reloc_name_in_sec_ptr((int)sectoffset, §ion_hdr[sectnum-1]);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
/* 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)
|
|
{
|
|
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_hdr.cputype != CPU_TYPE_POWERPC)
|
|
error("Unsupported CPU");
|
|
|
|
if (mach_hdr.filetype != MH_OBJECT)
|
|
error("Unsupported Mach Object");
|
|
|
|
/* read segment headers */
|
|
for(i=0, j=sizeof(mach_hdr); i<mach_hdr.ncmds ; i++)
|
|
{
|
|
if(read(fd, &lc, sizeof(struct load_command)) != sizeof(struct load_command))
|
|
error("unable to read load_command");
|
|
if(lc.cmd == LC_SEGMENT)
|
|
{
|
|
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");
|
|
}
|
|
if(lc.cmd == 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");
|
|
}
|
|
if(lc.cmd == 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");
|
|
}
|
|
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);
|
|
}
|
|
|
|
/* 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(!(int)dysymtabcmd)
|
|
error("could not find __DYSYMTAB segment");
|
|
|
|
/* read the table of content of the indirect sym */
|
|
tocdylib = load_data( fd, dysymtabcmd->indirectsymoff, dysymtabcmd->nindirectsyms * sizeof(uint32_t) );
|
|
|
|
/* Make sure symtab was loaded */
|
|
if(!(int)symtabcmd)
|
|
error("could not find __SYMTAB segment");
|
|
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;
|
|
|
|
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 */
|
|
|
|
/* return true if the expression is a label reference */
|
|
int get_reloc_expr(char *name, int name_size, const char *sym_name)
|
|
{
|
|
const char *p;
|
|
|
|
if (strstart(sym_name, "__op_param", &p)) {
|
|
snprintf(name, name_size, "param%s", p);
|
|
} else if (strstart(sym_name, "__op_gen_label", &p)) {
|
|
snprintf(name, name_size, "param%s", p);
|
|
return 1;
|
|
} else {
|
|
#if defined(HOST_SPARC) || defined(HOST_HPPA)
|
|
if (sym_name[0] == '.')
|
|
snprintf(name, name_size,
|
|
"(long)(&__dot_%s)",
|
|
sym_name + 1);
|
|
else
|
|
#endif
|
|
snprintf(name, name_size, "(long)(&%s)", sym_name);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef HOST_IA64
|
|
|
|
#define PLT_ENTRY_SIZE 16 /* 1 bundle containing "brl" */
|
|
|
|
struct plt_entry {
|
|
struct plt_entry *next;
|
|
const char *name;
|
|
unsigned long addend;
|
|
} *plt_list;
|
|
|
|
static int
|
|
get_plt_index (const char *name, unsigned long addend)
|
|
{
|
|
struct plt_entry *plt, *prev= NULL;
|
|
int index = 0;
|
|
|
|
/* see if we already have an entry for this target: */
|
|
for (plt = plt_list; plt; ++index, prev = plt, plt = plt->next)
|
|
if (strcmp(plt->name, name) == 0 && plt->addend == addend)
|
|
return index;
|
|
|
|
/* nope; create a new PLT entry: */
|
|
|
|
plt = malloc(sizeof(*plt));
|
|
if (!plt) {
|
|
perror("malloc");
|
|
exit(1);
|
|
}
|
|
memset(plt, 0, sizeof(*plt));
|
|
plt->name = strdup(name);
|
|
plt->addend = addend;
|
|
|
|
/* append to plt-list: */
|
|
if (prev)
|
|
prev->next = plt;
|
|
else
|
|
plt_list = plt;
|
|
return index;
|
|
}
|
|
|
|
#endif
|
|
|
|
#define MAX_ARGS 3
|
|
|
|
/* generate op code */
|
|
void gen_code(const char *name, host_ulong offset, host_ulong size,
|
|
FILE *outfile, int gen_switch)
|
|
{
|
|
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;
|
|
|
|
/* 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 defined(HOST_I386) || defined(HOST_X86_64)
|
|
#ifdef CONFIG_FORMAT_COFF
|
|
{
|
|
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;
|
|
}
|
|
#else
|
|
{
|
|
int len;
|
|
len = p_end - p_start;
|
|
if (len == 0)
|
|
error("empty code for %s", name);
|
|
if (p_end[-1] == 0xc3) {
|
|
len--;
|
|
} else {
|
|
error("ret or jmp expected at the end of %s", name);
|
|
}
|
|
copy_size = len;
|
|
}
|
|
#endif
|
|
#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) & 0xfff0) != 0x07f0)
|
|
error("br 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_end - p_start;
|
|
}
|
|
#elif defined(HOST_SPARC)
|
|
{
|
|
#define INSN_SAVE 0x9de3a000
|
|
#define INSN_RET 0x81c7e008
|
|
#define INSN_RETL 0x81c3e008
|
|
#define INSN_RESTORE 0x81e80000
|
|
#define INSN_RETURN 0x81cfe008
|
|
#define INSN_NOP 0x01000000
|
|
#define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp
|
|
#define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp
|
|
|
|
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) == INSN_SAVE) ||
|
|
(start_insn & ~0x1fff) == INSN_ADD_SP) {
|
|
p_start += 0x4;
|
|
start_offset += 0x4;
|
|
if (end_insn1 == INSN_RET && end_insn2 == INSN_RESTORE)
|
|
/* SPARC v7: ret; restore; */ ;
|
|
else if (end_insn1 == INSN_RETURN && end_insn2 == INSN_NOP)
|
|
/* SPARC v9: return; nop; */ ;
|
|
else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP)
|
|
/* SPARC v7: retl; sub %sp, nn, %sp; */ ;
|
|
else
|
|
|
|
error("ret; restore; not found at end of %s", name);
|
|
} else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) {
|
|
;
|
|
} 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 == INSN_NOP)
|
|
p -= 4;
|
|
}
|
|
#endif
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_SPARC64)
|
|
{
|
|
#define INSN_SAVE 0x9de3a000
|
|
#define INSN_RET 0x81c7e008
|
|
#define INSN_RETL 0x81c3e008
|
|
#define INSN_RESTORE 0x81e80000
|
|
#define INSN_RETURN 0x81cfe008
|
|
#define INSN_NOP 0x01000000
|
|
#define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp
|
|
#define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp
|
|
|
|
uint32_t start_insn, end_insn1, end_insn2, skip_insn;
|
|
uint8_t *p;
|
|
p = (void *)(p_end - 8);
|
|
#if 0
|
|
/* XXX: check why it occurs */
|
|
if (p <= p_start)
|
|
error("empty code for %s", name);
|
|
#endif
|
|
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) == INSN_SAVE) ||
|
|
(start_insn & ~0x1fff) == INSN_ADD_SP) {
|
|
p_start += 0x4;
|
|
start_offset += 0x4;
|
|
if (end_insn1 == INSN_RET && end_insn2 == INSN_RESTORE)
|
|
/* SPARC v7: ret; restore; */ ;
|
|
else if (end_insn1 == INSN_RETURN && end_insn2 == INSN_NOP)
|
|
/* SPARC v9: return; nop; */ ;
|
|
else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP)
|
|
/* SPARC v7: retl; sub %sp, nn, %sp; */ ;
|
|
else
|
|
|
|
error("ret; restore; not found at end of %s", name);
|
|
} else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) {
|
|
;
|
|
} 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_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_HPPA)
|
|
{
|
|
uint8_t *p;
|
|
p = p_start;
|
|
while (p < p_end) {
|
|
uint32_t insn = get32((uint32_t *)p);
|
|
if (insn == 0x6bc23fd9 || /* stw rp,-14(sp) */
|
|
insn == 0x08030241 || /* copy r3,r1 */
|
|
insn == 0x081e0243 || /* copy sp,r3 */
|
|
(insn & 0xffffc000) == 0x37de0000 || /* ldo x(sp),sp */
|
|
(insn & 0xffffc000) == 0x6fc10000) /* stwm r1,x(sp) */
|
|
p += 4;
|
|
else
|
|
break;
|
|
}
|
|
start_offset += p - p_start;
|
|
p_start = p;
|
|
p = p_end - 4;
|
|
|
|
while (p > p_start) {
|
|
uint32_t insn = get32((uint32_t *)p);
|
|
if ((insn & 0xffffc000) == 0x347e0000 || /* ldo x(r3),sp */
|
|
(insn & 0xffe0c000) == 0x4fc00000 || /* ldwm x(sp),rx */
|
|
(insn & 0xffffc000) == 0x37de0000 || /* ldo x(sp),sp */
|
|
insn == 0x48623fd9 || /* ldw -14(r3),rp */
|
|
insn == 0xe840c000 || /* bv r0(rp) */
|
|
insn == 0xe840c002) /* bv,n r0(rp) */
|
|
p -= 4;
|
|
else
|
|
break;
|
|
}
|
|
p += 4;
|
|
if (p <= p_start)
|
|
error("empty code for %s", name);
|
|
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_MIPS) || defined(HOST_MIPS64)
|
|
{
|
|
#define INSN_RETURN 0x03e00008
|
|
#define INSN_NOP 0x00000000
|
|
|
|
uint8_t *p = p_end;
|
|
|
|
if (p < (p_start + 0x8)) {
|
|
error("empty code for %s", name);
|
|
} else {
|
|
uint32_t end_insn1, end_insn2;
|
|
|
|
p -= 0x8;
|
|
end_insn1 = get32((uint32_t *)(p + 0x0));
|
|
end_insn2 = get32((uint32_t *)(p + 0x4));
|
|
if (end_insn1 != INSN_RETURN && end_insn2 != INSN_NOP)
|
|
error("jr ra not found at end of %s", name);
|
|
}
|
|
copy_size = p - p_start;
|
|
}
|
|
#elif defined(HOST_ARM)
|
|
error("dyngen targets not supported on ARM");
|
|
#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;
|
|
if (strstart(sym_name, "__op_param", &p) ||
|
|
strstart(sym_name, "__op_gen_label", &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);
|
|
}
|
|
|
|
if (gen_switch == 2) {
|
|
|
|
#if defined(HOST_HPPA)
|
|
int op_size = copy_size;
|
|
int has_stubs = 0;
|
|
char relname[256];
|
|
int type, is_label;
|
|
|
|
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);
|
|
sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
|
|
is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
|
|
if (!is_label && type == R_PARISC_PCREL17F) {
|
|
has_stubs = 1;
|
|
op_size += 8; /* ldil and be,n instructions */
|
|
}
|
|
}
|
|
}
|
|
|
|
if (has_stubs)
|
|
op_size += 4; /* b,l,n instruction, to skip past the stubs */
|
|
|
|
fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, op_size);
|
|
#else
|
|
fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, copy_size);
|
|
#endif
|
|
|
|
} else if (gen_switch == 1) {
|
|
|
|
/* output C code */
|
|
fprintf(outfile, "case INDEX_%s: {\n", name);
|
|
if (nb_args > 0) {
|
|
fprintf(outfile, " long ");
|
|
for(i = 0; i < nb_args; i++) {
|
|
if (i != 0)
|
|
fprintf(outfile, ", ");
|
|
fprintf(outfile, "param%d", i + 1);
|
|
}
|
|
fprintf(outfile, ";\n");
|
|
}
|
|
#if defined(HOST_IA64)
|
|
fprintf(outfile, " extern char %s;\n", name);
|
|
#else
|
|
fprintf(outfile, " extern void %s();\n", name);
|
|
#endif
|
|
|
|
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;
|
|
if (*sym_name &&
|
|
!strstart(sym_name, "__op_param", NULL) &&
|
|
!strstart(sym_name, "__op_jmp", NULL) &&
|
|
!strstart(sym_name, "__op_gen_label", NULL)) {
|
|
#if defined(HOST_SPARC) || defined(HOST_HPPA)
|
|
if (sym_name[0] == '.') {
|
|
fprintf(outfile,
|
|
"extern char __dot_%s __asm__(\"%s\");\n",
|
|
sym_name+1, sym_name);
|
|
continue;
|
|
}
|
|
#endif
|
|
#if defined(__APPLE__)
|
|
/* Set __attribute((unused)) on darwin because we
|
|
want to avoid warning when we don't use the symbol. */
|
|
fprintf(outfile, " extern char %s __attribute__((unused));\n", sym_name);
|
|
#elif defined(HOST_IA64)
|
|
if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
|
|
/*
|
|
* PCREL21 br.call targets generally
|
|
* are out of range and need to go
|
|
* through an "import stub".
|
|
*/
|
|
fprintf(outfile, " extern char %s;\n",
|
|
sym_name);
|
|
#else
|
|
fprintf(outfile, "extern char %s;\n", sym_name);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef __hppa__
|
|
fprintf(outfile, " memcpy(gen_code_ptr, (void *)((char *)__canonicalize_funcptr_for_compare(%s)+%d), %d);\n",
|
|
name, (int)(start_offset - offset), copy_size);
|
|
#else
|
|
fprintf(outfile, " memcpy(gen_code_ptr, (void *)((char *)&%s+%d), %d);\n",
|
|
name, (int)(start_offset - offset), copy_size);
|
|
#endif
|
|
|
|
/* emit code offset information */
|
|
{
|
|
EXE_SYM *sym;
|
|
const char *sym_name, *p;
|
|
host_ulong 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 = *(host_ulong *)(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] = %ld + (gen_code_ptr - gen_code_buf);\n", n, (long)(val - start_offset));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* load parameters in variables */
|
|
for(i = 0; i < nb_args; i++) {
|
|
fprintf(outfile, " param%d = *opparam_ptr++;\n", i + 1);
|
|
}
|
|
|
|
/* patch relocations */
|
|
#if defined(HOST_I386)
|
|
{
|
|
char relname[256];
|
|
int type, is_label;
|
|
int addend;
|
|
int reloc_offset;
|
|
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 (!sym_name)
|
|
continue;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
if (strstart(sym_name, "__op_jmp", &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_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
|
|
n, reloc_offset);
|
|
continue;
|
|
}
|
|
|
|
is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
addend = get32((uint32_t *)(text + rel->r_offset));
|
|
#ifdef CONFIG_FORMAT_ELF
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
if (is_label) {
|
|
switch(type) {
|
|
case R_386_32:
|
|
case R_386_PC32:
|
|
fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
|
|
reloc_offset, type, relname, addend);
|
|
break;
|
|
default:
|
|
error("unsupported i386 relocation (%d)", type);
|
|
}
|
|
} else {
|
|
switch(type) {
|
|
case R_386_32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_386_PC32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n",
|
|
reloc_offset, relname, reloc_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;
|
|
if (is_label) {
|
|
/* TCG uses elf relocation constants */
|
|
#define R_386_32 1
|
|
#define R_386_PC32 2
|
|
switch(type) {
|
|
case DIR32:
|
|
type = R_386_32;
|
|
goto do_reloc;
|
|
case DISP32:
|
|
type = R_386_PC32;
|
|
addend -= 4;
|
|
do_reloc:
|
|
fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
|
|
reloc_offset, type, relname, addend);
|
|
break;
|
|
default:
|
|
error("unsupported i386 relocation (%d)", type);
|
|
}
|
|
} else {
|
|
switch(type) {
|
|
case DIR32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case DISP32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d -4;\n",
|
|
reloc_offset, relname, reloc_offset, addend);
|
|
break;
|
|
default:
|
|
error("unsupported i386 relocation (%d)", type);
|
|
}
|
|
}
|
|
#else
|
|
#error unsupport object format
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_X86_64)
|
|
{
|
|
char relname[256];
|
|
int type, is_label;
|
|
int addend;
|
|
int reloc_offset;
|
|
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;
|
|
is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
if (is_label) {
|
|
switch(type) {
|
|
case R_X86_64_32:
|
|
case R_X86_64_32S:
|
|
case R_X86_64_PC32:
|
|
fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
|
|
reloc_offset, type, relname, addend);
|
|
break;
|
|
default:
|
|
error("unsupported X86_64 relocation (%d)", type);
|
|
}
|
|
} else {
|
|
switch(type) {
|
|
case R_X86_64_32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (uint32_t)%s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_X86_64_32S:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (int32_t)%s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_X86_64_PC32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n",
|
|
reloc_offset, relname, reloc_offset, addend);
|
|
break;
|
|
default:
|
|
error("unsupported X86_64 relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_PPC)
|
|
{
|
|
#ifdef CONFIG_FORMAT_ELF
|
|
char relname[256];
|
|
int type;
|
|
int addend;
|
|
int reloc_offset;
|
|
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;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
if (strstart(sym_name, "__op_jmp", &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_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
|
|
n, reloc_offset);
|
|
continue;
|
|
}
|
|
|
|
get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
switch(type) {
|
|
case R_PPC_ADDR32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_PPC_ADDR16_LO:
|
|
fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d);\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_PPC_ADDR16_HI:
|
|
fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d) >> 16;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_PPC_ADDR16_HA:
|
|
fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d + 0x8000) >> 16;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_PPC_REL24:
|
|
/* warning: must be at 32 MB distancy */
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((%s - (long)(gen_code_ptr + %d) + %d) & 0x03fffffc);\n",
|
|
reloc_offset, reloc_offset, relname, reloc_offset, addend);
|
|
break;
|
|
default:
|
|
error("unsupported powerpc relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
#elif defined(CONFIG_FORMAT_MACH)
|
|
struct scattered_relocation_info *scarel;
|
|
struct relocation_info * rel;
|
|
char final_sym_name[256];
|
|
const char *sym_name;
|
|
const char *p;
|
|
int slide, sslide;
|
|
int i;
|
|
|
|
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 && strstart(sym_name, "__op_jmp", &p)) {
|
|
int n;
|
|
n = strtol(p, NULL, 10);
|
|
fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\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 (!strstart(sym_name,"__op_gen_label",&p)) {
|
|
fprintf(outfile, "{\n");
|
|
fprintf(outfile, " uint32_t imm = *(uint32_t *)(gen_code_ptr + %d) & 0x3fffffc;\n", slide);
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((imm + ((long)%s - (long)gen_code_ptr) + %d) & 0x03fffffc);\n",
|
|
slide, slide, name, sslide);
|
|
fprintf(outfile, "}\n");
|
|
} else {
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | (((long)%s - (long)gen_code_ptr - %d) & 0x03fffffc);\n",
|
|
slide, slide, final_sym_name, slide);
|
|
}
|
|
break;
|
|
case PPC_RELOC_HI16:
|
|
fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d) >> 16;\n",
|
|
slide, final_sym_name, sslide);
|
|
break;
|
|
case PPC_RELOC_LO16:
|
|
fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d);\n",
|
|
slide, final_sym_name, sslide);
|
|
break;
|
|
case PPC_RELOC_HA16:
|
|
fprintf(outfile, " *(uint16_t *)(gen_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 relname[256];
|
|
int type;
|
|
int addend;
|
|
int reloc_offset;
|
|
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;
|
|
get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
switch(type) {
|
|
case R_390_32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_390_16:
|
|
fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = %s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_390_8:
|
|
fprintf(outfile, " *(uint8_t *)(gen_code_ptr + %d) = %s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_390_PC32DBL:
|
|
if (ELF32_ST_TYPE(symtab[ELFW(R_SYM)(rel->r_info)].st_info) == STT_SECTION) {
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) += "
|
|
"((long)&%s - (long)gen_code_ptr) >> 1;\n",
|
|
reloc_offset, name);
|
|
}
|
|
else
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"(%s + %d - ((uint32_t)gen_code_ptr + %d)) >> 1;\n",
|
|
reloc_offset, relname, addend, reloc_offset);
|
|
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;
|
|
long reloc_offset;
|
|
|
|
type = ELF64_R_TYPE(rel->r_info);
|
|
sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
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(gen_code_ptr + %ld, gp);\n",
|
|
reloc_offset);
|
|
fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, gp);\n",
|
|
reloc_offset + (int)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 (strstart(sym_name, "__op_param", &p))
|
|
fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, param%s);\n",
|
|
reloc_offset, p);
|
|
break;
|
|
case R_ALPHA_GPRELLOW:
|
|
if (strstart(sym_name, "__op_param", &p))
|
|
fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, param%s);\n",
|
|
reloc_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(gen_code_ptr + %ld, (uint8_t *) &%s - (gen_code_ptr + %ld + 4) + 8);\n",
|
|
reloc_offset, sym_name, reloc_offset);
|
|
break;
|
|
default:
|
|
error("unsupported Alpha relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_IA64)
|
|
{
|
|
unsigned long sym_idx;
|
|
long code_offset;
|
|
char relname[256];
|
|
int type;
|
|
long addend;
|
|
|
|
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
sym_idx = ELF64_R_SYM(rel->r_info);
|
|
if (rel->r_offset < start_offset
|
|
|| rel->r_offset >= start_offset + copy_size)
|
|
continue;
|
|
sym_name = (strtab + symtab[sym_idx].st_name);
|
|
code_offset = rel->r_offset - start_offset;
|
|
if (strstart(sym_name, "__op_jmp", &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_offsets[%d] ="
|
|
"%ld + (gen_code_ptr - gen_code_buf);\n",
|
|
n, code_offset);
|
|
continue;
|
|
}
|
|
get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
type = ELF64_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
switch(type) {
|
|
case R_IA64_IMM64:
|
|
fprintf(outfile,
|
|
" ia64_imm64(gen_code_ptr + %ld, "
|
|
"%s + %ld);\n",
|
|
code_offset, relname, addend);
|
|
break;
|
|
case R_IA64_LTOFF22X:
|
|
case R_IA64_LTOFF22:
|
|
fprintf(outfile, " IA64_LTOFF(gen_code_ptr + %ld,"
|
|
" %s + %ld, %d);\n",
|
|
code_offset, relname, addend,
|
|
(type == R_IA64_LTOFF22X));
|
|
break;
|
|
case R_IA64_LDXMOV:
|
|
fprintf(outfile,
|
|
" ia64_ldxmov(gen_code_ptr + %ld,"
|
|
" %s + %ld);\n", code_offset, relname, addend);
|
|
break;
|
|
|
|
case R_IA64_PCREL21B:
|
|
if (strstart(sym_name, "__op_gen_label", NULL)) {
|
|
fprintf(outfile,
|
|
" ia64_imm21b(gen_code_ptr + %ld,"
|
|
" (long) (%s + %ld -\n\t\t"
|
|
"((long) gen_code_ptr + %ld)) >> 4);\n",
|
|
code_offset, relname, addend,
|
|
code_offset & ~0xfUL);
|
|
} else {
|
|
fprintf(outfile,
|
|
" IA64_PLT(gen_code_ptr + %ld, "
|
|
"%d);\t/* %s + %ld */\n",
|
|
code_offset,
|
|
get_plt_index(sym_name, addend),
|
|
sym_name, addend);
|
|
}
|
|
break;
|
|
default:
|
|
error("unsupported ia64 relocation (0x%x)",
|
|
type);
|
|
}
|
|
}
|
|
fprintf(outfile, " ia64_nop_b(gen_code_ptr + %d);\n",
|
|
copy_size - 16 + 2);
|
|
}
|
|
#elif defined(HOST_SPARC)
|
|
{
|
|
char relname[256];
|
|
int type;
|
|
int addend;
|
|
int reloc_offset;
|
|
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;
|
|
get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
switch(type) {
|
|
case R_SPARC_32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_SPARC_HI22:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3fffff) "
|
|
" | (((%s + %d) >> 10) & 0x3fffff);\n",
|
|
reloc_offset, reloc_offset, relname, addend);
|
|
break;
|
|
case R_SPARC_LO10:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3ff) "
|
|
" | ((%s + %d) & 0x3ff);\n",
|
|
reloc_offset, reloc_offset, relname, addend);
|
|
break;
|
|
case R_SPARC_WDISP30:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3fffffff) "
|
|
" | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
|
|
" & 0x3fffffff);\n",
|
|
reloc_offset, reloc_offset, relname, addend,
|
|
reloc_offset);
|
|
break;
|
|
case R_SPARC_WDISP22:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3fffff) "
|
|
" | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
|
|
" & 0x3fffff);\n",
|
|
rel->r_offset - start_offset,
|
|
rel->r_offset - start_offset,
|
|
relname, addend,
|
|
rel->r_offset - start_offset);
|
|
break;
|
|
default:
|
|
error("unsupported sparc relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_SPARC64)
|
|
{
|
|
char relname[256];
|
|
int type;
|
|
int addend;
|
|
int reloc_offset;
|
|
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(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
switch(type) {
|
|
case R_SPARC_32:
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_SPARC_HI22:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3fffff) "
|
|
" | (((%s + %d) >> 10) & 0x3fffff);\n",
|
|
reloc_offset, reloc_offset, relname, addend);
|
|
break;
|
|
case R_SPARC_LO10:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3ff) "
|
|
" | ((%s + %d) & 0x3ff);\n",
|
|
reloc_offset, reloc_offset, relname, addend);
|
|
break;
|
|
case R_SPARC_OLO10:
|
|
addend += ELF64_R_TYPE_DATA (rel->r_info);
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3ff) "
|
|
" | ((%s + %d) & 0x3ff);\n",
|
|
reloc_offset, reloc_offset, relname, addend);
|
|
break;
|
|
case R_SPARC_WDISP30:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3fffffff) "
|
|
" | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
|
|
" & 0x3fffffff);\n",
|
|
reloc_offset, reloc_offset, relname, addend,
|
|
reloc_offset);
|
|
break;
|
|
case R_SPARC_WDISP22:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x3fffff) "
|
|
" | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
|
|
" & 0x3fffff);\n",
|
|
reloc_offset, reloc_offset, relname, addend,
|
|
reloc_offset);
|
|
break;
|
|
case R_SPARC_HH22:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x00000000) "
|
|
" | (((%s + %d) >> 42) & 0x00000000);\n",
|
|
reloc_offset, reloc_offset, relname, addend);
|
|
break;
|
|
|
|
case R_SPARC_LM22:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x00000000) "
|
|
" | (((%s + %d) >> 10) & 0x00000000);\n",
|
|
reloc_offset, reloc_offset, relname, addend);
|
|
break;
|
|
|
|
case R_SPARC_HM10:
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + %d) = "
|
|
"((*(uint32_t *)(gen_code_ptr + %d)) "
|
|
" & ~0x00000000) "
|
|
" | ((((%s + %d) >> 32 & 0x3ff)) & 0x00000000);\n",
|
|
reloc_offset, reloc_offset, relname, addend);
|
|
break;
|
|
|
|
default:
|
|
error("unsupported sparc64 relocation (%d) for symbol %s", type, relname);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_M68K)
|
|
{
|
|
char relname[256];
|
|
int type;
|
|
int addend;
|
|
int reloc_offset;
|
|
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(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = get32((uint32_t *)(text + rel->r_offset)) + rel->r_addend;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
switch(type) {
|
|
case R_68K_32:
|
|
fprintf(outfile, " /* R_68K_32 RELOC, offset %x */\n", rel->r_offset) ;
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %#x;\n",
|
|
reloc_offset, relname, addend );
|
|
break;
|
|
case R_68K_PC32:
|
|
fprintf(outfile, " /* R_68K_PC32 RELOC, offset %x */\n", rel->r_offset);
|
|
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %#x) + %#x;\n",
|
|
reloc_offset, relname, reloc_offset, /*sym->st_value+*/ addend);
|
|
break;
|
|
default:
|
|
error("unsupported m68k relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_HPPA)
|
|
{
|
|
char relname[256];
|
|
int type, is_label;
|
|
int addend;
|
|
int reloc_offset;
|
|
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);
|
|
sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
|
|
is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = rel->r_addend;
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
|
|
if (is_label) {
|
|
switch (type) {
|
|
case R_PARISC_PCREL17F:
|
|
fprintf(outfile,
|
|
" tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
|
|
reloc_offset, type, relname, addend);
|
|
break;
|
|
default:
|
|
error("unsupported hppa label relocation (%d)", type);
|
|
}
|
|
} else {
|
|
switch (type) {
|
|
case R_PARISC_DIR21L:
|
|
fprintf(outfile,
|
|
" hppa_patch21l((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_PARISC_DIR14R:
|
|
fprintf(outfile,
|
|
" hppa_patch14r((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_PARISC_PCREL17F:
|
|
if (strstart(sym_name, "__op_gen_label", NULL)) {
|
|
fprintf(outfile,
|
|
" hppa_patch17f((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
|
|
reloc_offset, relname, addend);
|
|
} else {
|
|
fprintf(outfile,
|
|
" HPPA_RECORD_BRANCH(hppa_stubs, (uint32_t *)(gen_code_ptr + %d), %s);\n",
|
|
reloc_offset, relname);
|
|
}
|
|
break;
|
|
case R_PARISC_DPREL21L:
|
|
if (strstart(sym_name, "__op_param", &p))
|
|
fprintf(outfile,
|
|
" hppa_load_imm21l((uint32_t *)(gen_code_ptr + %d), param%s, %d);\n",
|
|
reloc_offset, p, addend);
|
|
else
|
|
fprintf(outfile,
|
|
" hppa_patch21l_dprel((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
case R_PARISC_DPREL14R:
|
|
if (strstart(sym_name, "__op_param", &p))
|
|
fprintf(outfile,
|
|
" hppa_load_imm14r((uint32_t *)(gen_code_ptr + %d), param%s, %d);\n",
|
|
reloc_offset, p, addend);
|
|
else
|
|
fprintf(outfile,
|
|
" hppa_patch14r_dprel((uint32_t *)(gen_code_ptr + %d), %s, %d);\n",
|
|
reloc_offset, relname, addend);
|
|
break;
|
|
default:
|
|
error("unsupported hppa relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_MIPS) || defined(HOST_MIPS64)
|
|
{
|
|
for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
|
|
if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
|
|
char relname[256];
|
|
int type;
|
|
int addend;
|
|
int reloc_offset;
|
|
|
|
sym_name = strtab + symtab[ELF32_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(relname, sizeof(relname), sym_name);
|
|
type = ELF32_R_TYPE(rel->r_info);
|
|
addend = get32((uint32_t *)(text + rel->r_offset));
|
|
reloc_offset = rel->r_offset - start_offset;
|
|
switch (type) {
|
|
case R_MIPS_26:
|
|
fprintf(outfile, " /* R_MIPS_26 RELOC, offset 0x%x, name %s */\n",
|
|
rel->r_offset, sym_name);
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + 0x%x) = "
|
|
"(0x%x & ~0x3fffff) "
|
|
"| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) "
|
|
" & 0x3fffff);\n",
|
|
reloc_offset, addend, addend, relname, reloc_offset);
|
|
break;
|
|
case R_MIPS_HI16:
|
|
fprintf(outfile, " /* R_MIPS_HI16 RELOC, offset 0x%x, name %s */\n",
|
|
rel->r_offset, sym_name);
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + 0x%x) = "
|
|
"((*(uint32_t *)(gen_code_ptr + 0x%x)) "
|
|
" & ~0xffff) "
|
|
" | (((%s - 0x8000) >> 16) & 0xffff);\n",
|
|
reloc_offset, reloc_offset, relname);
|
|
break;
|
|
case R_MIPS_LO16:
|
|
fprintf(outfile, " /* R_MIPS_LO16 RELOC, offset 0x%x, name %s */\n",
|
|
rel->r_offset, sym_name);
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + 0x%x) = "
|
|
"((*(uint32_t *)(gen_code_ptr + 0x%x)) "
|
|
" & ~0xffff) "
|
|
" | (%s & 0xffff);\n",
|
|
reloc_offset, reloc_offset, relname);
|
|
break;
|
|
case R_MIPS_PC16:
|
|
fprintf(outfile, " /* R_MIPS_PC16 RELOC, offset 0x%x, name %s */\n",
|
|
rel->r_offset, sym_name);
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + 0x%x) = "
|
|
"(0x%x & ~0xffff) "
|
|
"| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) "
|
|
" & 0xffff);\n",
|
|
reloc_offset, addend, addend, relname, reloc_offset);
|
|
break;
|
|
case R_MIPS_GOT16:
|
|
case R_MIPS_CALL16:
|
|
fprintf(outfile, " /* R_MIPS_GOT16 RELOC, offset 0x%x, name %s */\n",
|
|
rel->r_offset, sym_name);
|
|
fprintf(outfile,
|
|
" *(uint32_t *)(gen_code_ptr + 0x%x) = "
|
|
"((*(uint32_t *)(gen_code_ptr + 0x%x)) "
|
|
" & ~0xffff) "
|
|
" | (((%s - 0x8000) >> 16) & 0xffff);\n",
|
|
reloc_offset, reloc_offset, relname);
|
|
break;
|
|
default:
|
|
error("unsupported MIPS relocation (%d)", type);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#elif defined(HOST_ARM)
|
|
error("dyngen targets not supported on ARM");
|
|
#else
|
|
#error unsupported CPU
|
|
#endif
|
|
fprintf(outfile, " gen_code_ptr += %d;\n", copy_size);
|
|
fprintf(outfile, "}\n");
|
|
fprintf(outfile, "break;\n\n");
|
|
} else {
|
|
fprintf(outfile, "static inline void gen_%s(", 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, "{\n");
|
|
for(i = 0; i < nb_args; i++) {
|
|
fprintf(outfile, " *gen_opparam_ptr++ = param%d;\n", i + 1);
|
|
}
|
|
fprintf(outfile, " *gen_opc_ptr++ = INDEX_%s;\n", name);
|
|
fprintf(outfile, "}\n\n");
|
|
}
|
|
}
|
|
|
|
int gen_file(FILE *outfile, int out_type)
|
|
{
|
|
int i;
|
|
EXE_SYM *sym;
|
|
|
|
if (out_type == OUT_INDEX_OP) {
|
|
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
const char *name;
|
|
name = get_sym_name(sym);
|
|
if (strstart(name, OP_PREFIX, NULL)) {
|
|
gen_code(name, sym->st_value, sym->st_size, outfile, 2);
|
|
}
|
|
}
|
|
} else if (out_type == OUT_GEN_OP) {
|
|
/* generate gen_xxx functions */
|
|
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
const char *name;
|
|
name = get_sym_name(sym);
|
|
if (strstart(name, OP_PREFIX, NULL)) {
|
|
#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(name, sym->st_value, sym->st_size, outfile, 0);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
/* generate big code generation switch */
|
|
|
|
#ifdef HOST_ARM
|
|
error("dyngen targets not supported on ARM");
|
|
#endif
|
|
#ifdef HOST_IA64
|
|
#error broken
|
|
{
|
|
long addend, not_first = 0;
|
|
unsigned long sym_idx;
|
|
int index, max_index;
|
|
const char *sym_name;
|
|
EXE_RELOC *rel;
|
|
|
|
max_index = -1;
|
|
for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
sym_idx = ELF64_R_SYM(rel->r_info);
|
|
sym_name = (strtab + symtab[sym_idx].st_name);
|
|
if (strstart(sym_name, "__op_gen_label", NULL))
|
|
continue;
|
|
if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
|
|
continue;
|
|
|
|
addend = rel->r_addend;
|
|
index = get_plt_index(sym_name, addend);
|
|
if (index <= max_index)
|
|
continue;
|
|
max_index = index;
|
|
fprintf(outfile, " extern void %s(void);\n", sym_name);
|
|
}
|
|
|
|
fprintf(outfile,
|
|
" struct ia64_fixup *plt_fixes = NULL, "
|
|
"*ltoff_fixes = NULL;\n"
|
|
" static long plt_target[] = {\n\t");
|
|
|
|
max_index = -1;
|
|
for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
|
|
sym_idx = ELF64_R_SYM(rel->r_info);
|
|
sym_name = (strtab + symtab[sym_idx].st_name);
|
|
if (strstart(sym_name, "__op_gen_label", NULL))
|
|
continue;
|
|
if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
|
|
continue;
|
|
|
|
addend = rel->r_addend;
|
|
index = get_plt_index(sym_name, addend);
|
|
if (index <= max_index)
|
|
continue;
|
|
max_index = index;
|
|
|
|
if (not_first)
|
|
fprintf(outfile, ",\n\t");
|
|
not_first = 1;
|
|
if (addend)
|
|
fprintf(outfile, "(long) &%s + %ld", sym_name, addend);
|
|
else
|
|
fprintf(outfile, "(long) &%s", sym_name);
|
|
}
|
|
fprintf(outfile, "\n };\n"
|
|
" unsigned int plt_offset[%u] = { 0 };\n", max_index + 1);
|
|
}
|
|
#endif
|
|
|
|
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
|
|
const char *name;
|
|
name = get_sym_name(sym);
|
|
if (strstart(name, OP_PREFIX, NULL)) {
|
|
#if 0
|
|
printf("%4d: %s pos=0x%08x len=%d\n",
|
|
i, name, sym->st_value, sym->st_size);
|
|
#endif
|
|
#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(name, sym->st_value, sym->st_size, outfile, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void usage(void)
|
|
{
|
|
printf("dyngen (c) 2003 Fabrice Bellard\n"
|
|
"usage: dyngen [-o outfile] [-c] objfile\n"
|
|
"Generate a dynamic code generator from an object file\n"
|
|
"-c output enum of operations\n"
|
|
"-g output gen_op_xx() functions\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_CODE;
|
|
for(;;) {
|
|
c = getopt(argc, argv, "ho:cg");
|
|
if (c == -1)
|
|
break;
|
|
switch(c) {
|
|
case 'h':
|
|
usage();
|
|
break;
|
|
case 'o':
|
|
outfilename = optarg;
|
|
break;
|
|
case 'c':
|
|
out_type = OUT_INDEX_OP;
|
|
break;
|
|
case 'g':
|
|
out_type = OUT_GEN_OP;
|
|
break;
|
|
}
|
|
}
|
|
if (optind >= argc)
|
|
usage();
|
|
filename = argv[optind];
|
|
outfile = fopen(outfilename, "w");
|
|
if (!outfile)
|
|
error("could not open '%s'", outfilename);
|
|
|
|
load_object(filename);
|
|
gen_file(outfile, out_type);
|
|
fclose(outfile);
|
|
return 0;
|
|
}
|