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https://sourceware.org/git/binutils-gdb.git
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133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/* Disassemble from a buffer, for GNU.
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Copyright 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2005
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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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "dis-asm.h"
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#include <errno.h>
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#include "opintl.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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unsigned int length;
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struct disassemble_info *info;
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{
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unsigned int opb = info->octets_per_byte;
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unsigned int end_addr_offset = length / opb;
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unsigned int max_addr_offset = info->buffer_length / opb;
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unsigned int octets = (memaddr - info->buffer_vma) * opb;
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if (memaddr < info->buffer_vma
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|| memaddr - info->buffer_vma + end_addr_offset > max_addr_offset)
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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 + octets, 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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{
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char buf[30];
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/* Actually, address between memaddr and memaddr + len was
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out of bounds. */
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sprintf_vma (buf, memaddr);
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info->fprintf_func (info->stream,
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_("Address 0x%s is out of bounds.\n"), buf);
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}
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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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char buf[30];
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sprintf_vma (buf, addr);
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(*info->fprintf_func) (info->stream, "0x%s", buf);
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}
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#if 0
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/* Just concatenate the address as hex. This is included for
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completeness even though both GDB and objdump provide their own (to
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print symbolic addresses). */
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void generic_strcat_address PARAMS ((bfd_vma, char *, int));
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void
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generic_strcat_address (addr, buf, len)
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bfd_vma addr;
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char *buf;
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int len;
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{
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if (buf != (char *)NULL && len > 0)
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{
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char tmpBuf[30];
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sprintf_vma (tmpBuf, addr);
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if ((strlen (buf) + strlen (tmpBuf)) <= (unsigned int) len)
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strcat (buf, tmpBuf);
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else
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strncat (buf, tmpBuf, (len - strlen(buf)));
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}
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return;
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}
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#endif
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/* Just return true. */
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int
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generic_symbol_at_address (addr, info)
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bfd_vma addr ATTRIBUTE_UNUSED;
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struct disassemble_info *info ATTRIBUTE_UNUSED;
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{
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return 1;
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}
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/* Just return TRUE. */
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bfd_boolean
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generic_symbol_is_valid (asymbol * sym ATTRIBUTE_UNUSED,
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struct disassemble_info *info ATTRIBUTE_UNUSED)
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{
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return TRUE;
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}
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