| 1 | /* Register support routines for the remote server for GDB. |
| 2 | Copyright 2001, 2002 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "server.h" |
| 23 | #include "regdef.h" |
| 24 | |
| 25 | #include <stdlib.h> |
| 26 | #include <string.h> |
| 27 | |
| 28 | static char *registers; |
| 29 | static int register_bytes; |
| 30 | |
| 31 | static struct reg *reg_defs; |
| 32 | static int num_registers; |
| 33 | |
| 34 | const char **gdbserver_expedite_regs; |
| 35 | |
| 36 | int |
| 37 | registers_length (void) |
| 38 | { |
| 39 | return 2 * register_bytes; |
| 40 | } |
| 41 | |
| 42 | void |
| 43 | set_register_cache (struct reg *regs, int n) |
| 44 | { |
| 45 | int offset, i; |
| 46 | |
| 47 | reg_defs = regs; |
| 48 | num_registers = n; |
| 49 | |
| 50 | offset = 0; |
| 51 | for (i = 0; i < n; i++) |
| 52 | { |
| 53 | regs[i].offset = offset; |
| 54 | offset += regs[i].size; |
| 55 | } |
| 56 | |
| 57 | register_bytes = offset / 8; |
| 58 | registers = malloc (offset / 8); |
| 59 | if (!registers) |
| 60 | fatal ("Could not allocate register cache."); |
| 61 | } |
| 62 | |
| 63 | void |
| 64 | registers_to_string (char *buf) |
| 65 | { |
| 66 | convert_int_to_ascii (registers, buf, register_bytes); |
| 67 | } |
| 68 | |
| 69 | void |
| 70 | registers_from_string (char *buf) |
| 71 | { |
| 72 | int len = strlen (buf); |
| 73 | |
| 74 | if (len != register_bytes * 2) |
| 75 | { |
| 76 | warning ("Wrong sized register packet (expected %d bytes, got %d)", 2*register_bytes, len); |
| 77 | if (len > register_bytes * 2) |
| 78 | len = register_bytes * 2; |
| 79 | } |
| 80 | convert_ascii_to_int (buf, registers, len / 2); |
| 81 | } |
| 82 | |
| 83 | struct reg * |
| 84 | find_register_by_name (const char *name) |
| 85 | { |
| 86 | int i; |
| 87 | |
| 88 | for (i = 0; i < num_registers; i++) |
| 89 | if (!strcmp (name, reg_defs[i].name)) |
| 90 | return ®_defs[i]; |
| 91 | fatal ("Unknown register %s requested", name); |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | int |
| 96 | find_regno (const char *name) |
| 97 | { |
| 98 | int i; |
| 99 | |
| 100 | for (i = 0; i < num_registers; i++) |
| 101 | if (!strcmp (name, reg_defs[i].name)) |
| 102 | return i; |
| 103 | fatal ("Unknown register %s requested", name); |
| 104 | return -1; |
| 105 | } |
| 106 | |
| 107 | struct reg * |
| 108 | find_register_by_number (int n) |
| 109 | { |
| 110 | return ®_defs[n]; |
| 111 | } |
| 112 | |
| 113 | int |
| 114 | register_size (int n) |
| 115 | { |
| 116 | return reg_defs[n].size / 8; |
| 117 | } |
| 118 | |
| 119 | char * |
| 120 | register_data (int n) |
| 121 | { |
| 122 | return registers + (reg_defs[n].offset / 8); |
| 123 | } |
| 124 | |
| 125 | void |
| 126 | supply_register (int n, const char *buf) |
| 127 | { |
| 128 | memcpy (register_data (n), buf, register_size (n)); |
| 129 | } |
| 130 | |
| 131 | void |
| 132 | supply_register_by_name (const char *name, const char *buf) |
| 133 | { |
| 134 | supply_register (find_regno (name), buf); |
| 135 | } |
| 136 | |
| 137 | void |
| 138 | collect_register (int n, char *buf) |
| 139 | { |
| 140 | memcpy (buf, register_data (n), register_size (n)); |
| 141 | } |
| 142 | |
| 143 | void |
| 144 | collect_register_by_name (const char *name, char *buf) |
| 145 | { |
| 146 | collect_register (find_regno (name), buf); |
| 147 | } |