Rev 5221 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5221 | serge | 1 | /* Disassemble from a buffer, for GNU. |
| 6324 | serge | 2 | Copyright (C) 1993-2015 Free Software Foundation, Inc. |
| 5221 | serge | 3 | |
| 4 | This file is part of the GNU opcodes library. |
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| 5 | |||
| 6 | This library is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 3, or (at your option) |
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| 9 | any later version. |
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| 10 | |||
| 11 | It is distributed in the hope that it will be useful, but WITHOUT |
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| 12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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| 13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
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| 14 | License for more details. |
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| 15 | |||
| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with this program; if not, write to the Free Software |
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| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
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| 19 | MA 02110-1301, USA. */ |
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| 20 | |||
| 21 | #include "sysdep.h" |
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| 22 | #include "dis-asm.h" |
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| 23 | #include |
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| 24 | #include "opintl.h" |
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| 25 | |||
| 26 | /* Get LENGTH bytes from info's buffer, at target address memaddr. |
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| 27 | Transfer them to myaddr. */ |
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| 28 | int |
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| 29 | buffer_read_memory (bfd_vma memaddr, |
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| 30 | bfd_byte *myaddr, |
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| 31 | unsigned int length, |
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| 32 | struct disassemble_info *info) |
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| 33 | { |
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| 34 | unsigned int opb = info->octets_per_byte; |
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| 35 | unsigned int end_addr_offset = length / opb; |
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| 6324 | serge | 36 | unsigned int max_addr_offset = info->buffer_length / opb; |
| 5221 | serge | 37 | unsigned int octets = (memaddr - info->buffer_vma) * opb; |
| 38 | |||
| 39 | if (memaddr < info->buffer_vma |
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| 40 | || memaddr - info->buffer_vma > max_addr_offset |
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| 6324 | serge | 41 | || memaddr - info->buffer_vma + end_addr_offset > max_addr_offset |
| 42 | || (info->stop_vma && (memaddr >= info->stop_vma |
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| 43 | || memaddr + end_addr_offset > info->stop_vma))) |
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| 5221 | serge | 44 | /* Out of bounds. Use EIO because GDB uses it. */ |
| 45 | return EIO; |
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| 46 | memcpy (myaddr, info->buffer + octets, length); |
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| 47 | |||
| 48 | return 0; |
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| 49 | } |
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| 50 | |||
| 51 | /* Print an error message. We can assume that this is in response to |
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| 52 | an error return from buffer_read_memory. */ |
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| 53 | |||
| 54 | void |
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| 55 | perror_memory (int status, |
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| 56 | bfd_vma memaddr, |
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| 57 | struct disassemble_info *info) |
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| 58 | { |
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| 59 | if (status != EIO) |
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| 60 | /* Can't happen. */ |
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| 61 | info->fprintf_func (info->stream, _("Unknown error %d\n"), status); |
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| 62 | else |
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| 63 | { |
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| 64 | char buf[30]; |
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| 65 | |||
| 66 | /* Actually, address between memaddr and memaddr + len was |
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| 67 | out of bounds. */ |
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| 68 | sprintf_vma (buf, memaddr); |
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| 69 | info->fprintf_func (info->stream, |
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| 70 | _("Address 0x%s is out of bounds.\n"), buf); |
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| 71 | } |
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| 72 | } |
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| 73 | |||
| 74 | /* This could be in a separate file, to save miniscule amounts of space |
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| 75 | in statically linked executables. */ |
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| 76 | |||
| 77 | /* Just print the address is hex. This is included for completeness even |
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| 78 | though both GDB and objdump provide their own (to print symbolic |
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| 79 | addresses). */ |
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| 80 | |||
| 81 | void |
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| 82 | generic_print_address (bfd_vma addr, struct disassemble_info *info) |
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| 83 | { |
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| 84 | char buf[30]; |
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| 85 | |||
| 86 | sprintf_vma (buf, addr); |
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| 87 | (*info->fprintf_func) (info->stream, "0x%s", buf); |
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| 88 | } |
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| 89 | |||
| 90 | /* Just return true. */ |
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| 91 | |||
| 92 | int |
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| 93 | generic_symbol_at_address (bfd_vma addr ATTRIBUTE_UNUSED, |
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| 94 | struct disassemble_info *info ATTRIBUTE_UNUSED) |
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| 95 | { |
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| 96 | return 1; |
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| 97 | } |
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| 98 | |||
| 99 | /* Just return TRUE. */ |
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| 100 | |||
| 101 | bfd_boolean |
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| 102 | generic_symbol_is_valid (asymbol * sym ATTRIBUTE_UNUSED, |
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| 103 | struct disassemble_info *info ATTRIBUTE_UNUSED) |
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| 104 | { |
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| 105 | return TRUE; |
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| 106 | } |