2 * Copyright © 2008 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 * Read and write arbitrary memory through the debug port
25 static uint8_t memory_init[] = {
26 3, MOV_DPTR_data16, 0, 0,
33 static uint8_t write8[] = {
41 static uint8_t read8[] = {
48 ccdbg_write_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
53 ccdbg_state_save(dbg, &state, CC_STATE_ACC | CC_STATE_PSW | CC_STATE_DP);
54 memory_init[HIGH_START] = addr >> 8;
55 memory_init[LOW_START] = addr;
56 (void) ccdbg_execute(dbg, memory_init);
57 for (i = 0; i < nbytes; i++) {
58 write8[DATA_BYTE] = *bytes++;
59 ccdbg_execute(dbg, write8);
60 if ((i & 0xf) == 0xf) {
61 ccdbg_debug(CC_DEBUG_MEMORY, ".");
62 ccdbg_flush(CC_DEBUG_MEMORY);
65 if ((i & 0xff) == 0xff) {
66 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
70 ccdbg_state_restore(dbg, &state);
72 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
77 ccdbg_read_memory(struct ccdbg *dbg, uint16_t addr, uint8_t *bytes, int nbytes)
82 if (ccdbg_rom_contains(dbg, addr, nbytes)) {
83 ccdbg_rom_replace_xmem(dbg, addr, bytes, nbytes);
86 ccdbg_state_save(dbg, &state, CC_STATE_ACC | CC_STATE_PSW | CC_STATE_DP);
87 memory_init[HIGH_START] = addr >> 8;
88 memory_init[LOW_START] = addr;
89 (void) ccdbg_execute(dbg, memory_init);
90 for (i = 0; i < nbytes; i++) {
91 *bytes++ = ccdbg_execute(dbg, read8);
92 if ((i & 0xf) == 0xf) {
93 ccdbg_debug(CC_DEBUG_MEMORY, ".");
94 ccdbg_flush(CC_DEBUG_MEMORY);
97 if ((i & 0xff) == 0xff) {
98 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
102 ccdbg_state_replace_xmem(dbg, &state, addr, bytes, nbytes);
103 ccdbg_state_restore(dbg, &state);
105 ccdbg_debug(CC_DEBUG_MEMORY, "\n");
110 ccdbg_write_uint8(struct ccdbg *dbg, uint16_t addr, uint8_t byte)
112 return ccdbg_write_memory(dbg, addr, &byte, 1);
116 ccdbg_write_hex_image(struct ccdbg *dbg, struct hex_image *image, uint16_t offset)
118 ccdbg_write_memory(dbg, image->address + offset, image->data, image->length);
123 ccdbg_read_hex_image(struct ccdbg *dbg, uint16_t address, uint16_t length)
125 struct hex_image *image;
127 image = calloc(sizeof(struct hex_image) + length, 1);
128 image->address = address;
129 image->length = length;
130 memset(image->data, 0xff, length);
131 ccdbg_read_memory(dbg, address, image->data, length);
135 static uint8_t sfr_read[] = {
137 #define SFR_READ_ADDR 2
141 static uint8_t sfr_write[] = {
142 3, MOV_direct_data, 0, 0,
143 #define SFR_WRITE_ADDR 2
144 #define SFR_WRITE_DATA 3
149 ccdbg_read_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes)
152 struct ccstate state;
154 ccdbg_state_save(dbg, &state, CC_STATE_ACC);
155 for (i = 0; i < nbytes; i++) {
156 sfr_read[SFR_READ_ADDR] = addr + i;
157 *bytes++ = ccdbg_execute(dbg, sfr_read);
159 ccdbg_state_replace_sfr(dbg, &state, addr, bytes, nbytes);
160 ccdbg_state_restore(dbg, &state);
165 ccdbg_write_sfr(struct ccdbg *dbg, uint8_t addr, uint8_t *bytes, int nbytes)
169 for (i = 0; i < nbytes; i++) {
170 sfr_write[SFR_WRITE_ADDR] = addr + i;
171 sfr_write[SFR_WRITE_DATA] = *bytes++;
172 ccdbg_execute(dbg, sfr_write);