mirror of https://gitee.com/openkylin/qemu.git
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/* Disassemble from a buffer, for GNU.
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Copyright (C) 1993, 1994 Free Software Foundation, Inc.
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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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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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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "dis-asm.h"
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#include <errno.h>
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/* Get LENGTH bytes from info's buffer, at target address memaddr.
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Transfer them to myaddr. */
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int
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buffer_read_memory (memaddr, myaddr, length, info)
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bfd_vma memaddr;
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bfd_byte *myaddr;
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int length;
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struct disassemble_info *info;
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{
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if (memaddr < info->buffer_vma
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|| memaddr + length > info->buffer_vma + info->buffer_length)
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/* Out of bounds. Use EIO because GDB uses it. */
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return EIO;
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memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);
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return 0;
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}
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/* Print an error message. We can assume that this is in response to
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an error return from buffer_read_memory. */
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void
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perror_memory (status, memaddr, info)
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int status;
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bfd_vma memaddr;
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struct disassemble_info *info;
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{
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if (status != EIO)
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/* Can't happen. */
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(*info->fprintf_func) (info->stream, "Unknown error %d\n", status);
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else
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/* Actually, address between memaddr and memaddr + len was
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out of bounds. */
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(*info->fprintf_func) (info->stream,
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"Address 0x%x is out of bounds.\n", memaddr);
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}
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/* This could be in a separate file, to save miniscule amounts of space
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in statically linked executables. */
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/* Just print the address is hex. This is included for completeness even
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though both GDB and objdump provide their own (to print symbolic
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addresses). */
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void
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generic_print_address (addr, info)
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bfd_vma addr;
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struct disassemble_info *info;
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{
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(*info->fprintf_func) (info->stream, "0x%x", addr);
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}
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/* Just return the given address. */
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int
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generic_symbol_at_address (addr, info)
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bfd_vma addr;
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struct disassemble_info * info;
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{
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return 1;
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}
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