1 /* Disassemble from a buffer, for GNU. 2 Copyright 1993, 1994, 1996, 1997, 1998, 1999, 2000 3 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 18 19 #include "sysdep.h" 20 #include "dis-asm.h" 21 #include <errno.h> 22 #include "opintl.h" 23 24 /* Get LENGTH bytes from info's buffer, at target address memaddr. 25 Transfer them to myaddr. */ 26 int 27 buffer_read_memory (memaddr, myaddr, length, info) 28 bfd_vma memaddr; 29 bfd_byte *myaddr; 30 unsigned int length; 31 struct disassemble_info *info; 32 { 33 unsigned int opb = info->octets_per_byte; 34 unsigned int end_addr_offset = length / opb; 35 unsigned int max_addr_offset = info->buffer_length / opb; 36 unsigned int octets = (memaddr - info->buffer_vma) * opb; 37 38 if (memaddr < info->buffer_vma 39 || memaddr - info->buffer_vma + end_addr_offset > max_addr_offset) 40 /* Out of bounds. Use EIO because GDB uses it. */ 41 return EIO; 42 memcpy (myaddr, info->buffer + octets, length); 43 44 return 0; 45 } 46 47 /* Print an error message. We can assume that this is in response to 48 an error return from buffer_read_memory. */ 49 void 50 perror_memory (status, memaddr, info) 51 int status; 52 bfd_vma memaddr; 53 struct disassemble_info *info; 54 { 55 if (status != EIO) 56 /* Can't happen. */ 57 info->fprintf_func (info->stream, _("Unknown error %d\n"), status); 58 else 59 /* Actually, address between memaddr and memaddr + len was 60 out of bounds. */ 61 info->fprintf_func (info->stream, 62 _("Address 0x%x is out of bounds.\n"), memaddr); 63 } 64 65 /* This could be in a separate file, to save miniscule amounts of space 66 in statically linked executables. */ 67 68 /* Just print the address is hex. This is included for completeness even 69 though both GDB and objdump provide their own (to print symbolic 70 addresses). */ 71 72 void 73 generic_print_address (addr, info) 74 bfd_vma addr; 75 struct disassemble_info *info; 76 { 77 char buf[30]; 78 79 sprintf_vma (buf, addr); 80 (*info->fprintf_func) (info->stream, "0x%s", buf); 81 } 82 83 #if 0 84 /* Just concatenate the address as hex. This is included for 85 completeness even though both GDB and objdump provide their own (to 86 print symbolic addresses). */ 87 88 void generic_strcat_address PARAMS ((bfd_vma, char *, int)); 89 90 void 91 generic_strcat_address (addr, buf, len) 92 bfd_vma addr; 93 char *buf; 94 int len; 95 { 96 if (buf != (char *)NULL && len > 0) 97 { 98 char tmpBuf[30]; 99 100 sprintf_vma (tmpBuf, addr); 101 if ((strlen (buf) + strlen (tmpBuf)) <= (unsigned int) len) 102 strcat (buf, tmpBuf); 103 else 104 strncat (buf, tmpBuf, (len - strlen(buf))); 105 } 106 return; 107 } 108 #endif 109 110 /* Just return true. */ 111 112 int 113 generic_symbol_at_address (addr, info) 114 bfd_vma addr ATTRIBUTE_UNUSED; 115 struct disassemble_info *info ATTRIBUTE_UNUSED; 116 { 117 return 1; 118 } 119 120 /* Just return TRUE. */ 121 122 bfd_boolean 123 generic_symbol_is_valid (asymbol * sym ATTRIBUTE_UNUSED, 124 struct disassemble_info *info ATTRIBUTE_UNUSED) 125 { 126 return TRUE; 127 } 128