diff options
Diffstat (limited to 'ao-tools/ao-dbg/ao-dbg-command.c')
| -rw-r--r-- | ao-tools/ao-dbg/ao-dbg-command.c | 654 |
1 files changed, 654 insertions, 0 deletions
diff --git a/ao-tools/ao-dbg/ao-dbg-command.c b/ao-tools/ao-dbg/ao-dbg-command.c new file mode 100644 index 00000000..eab7bc68 --- /dev/null +++ b/ao-tools/ao-dbg/ao-dbg-command.c @@ -0,0 +1,654 @@ +/* + * Copyright © 2008 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#include "ao-dbg.h" + +static uint16_t start_address; + +static enum command_result +parse_int(char *value, int *result) +{ + char *endptr; + + *result = strtol(value, &endptr, 0); + if (endptr == value) + return command_syntax; + return command_success; +} + +static enum command_result +parse_uint16(char *value, uint16_t *uint16) +{ + int v; + enum command_result result; + + result = parse_int(value, &v); + if (result != command_success) + return command_error; + if (v < 0 || v > 0xffff) + return command_error; + *uint16 = v; + return command_success; +} + +static enum command_result +parse_uint8(char *value, uint8_t *uint8) +{ + int v; + enum command_result result; + + result = parse_int(value, &v); + if (result != command_success) + return command_error; + if (v < 0 || v > 0xff) + return command_error; + *uint8 = v; + return command_success; +} + +enum command_result +command_quit (int argc, char **argv) +{ + ccdbg_reset(s51_dbg); + exit(0); + return command_error; +} + +static void +dump_bytes(uint8_t *memory, int length, uint16_t start, char *format) +{ + int group, i; + + for (group = 0; group < length; group += 8) { + s51_printf(format, start + group); + for (i = group; i < length && i < group + 8; i++) + s51_printf("%02x ", memory[i]); + for (; i < group + 8; i++) + s51_printf(" "); + for (i = group; i < length && i < group + 8; i++) { + if (isascii(memory[i]) && isprint(memory[i])) + s51_printf("%c", memory[i]); + else + s51_printf("."); + } + s51_printf("\n"); + } +} + +enum command_result +command_di (int argc, char **argv) +{ + uint16_t start, end; + uint8_t memory[65536]; + uint8_t status; + int length; + + if (argc != 3) + return command_error; + if (parse_uint16(argv[1], &start) != command_success) + return command_error; + if (parse_uint16(argv[2], &end) != command_success) + return command_error; + length = (int) end - (int) start + 1; + status = ccdbg_read_memory(s51_dbg, start + 0xff00, memory, length); + dump_bytes(memory, length, start, "0x%02x "); + return command_success; +} + +enum command_result +command_ds (int argc, char **argv) +{ + uint8_t start, end; + uint8_t memory[0x100]; + uint8_t status; + int length; + + if (argc != 3) + return command_error; + if (parse_uint8(argv[1], &start) != command_success) + return command_error; + if (parse_uint8(argv[2], &end) != command_success) + return command_error; + length = (int) end - (int) start + 1; + status = ccdbg_read_sfr(s51_dbg, start, memory, length); + dump_bytes(memory, length, start, "0x%02x "); + return command_success; +} + +enum command_result +command_dx (int argc, char **argv) +{ + uint16_t start, end; + uint8_t memory[65536]; + uint8_t status; + int length; + + if (argc != 3) + return command_error; + if (parse_uint16(argv[1], &start) != command_success) + return command_error; + if (parse_uint16(argv[2], &end) != command_success) + return command_error; + length = (int) end - (int) start + 1; + status = ccdbg_read_memory(s51_dbg, start, memory, length); + dump_bytes(memory, length, start, "0x%04x "); + return command_success; +} + +enum command_result +command_set (int argc, char **argv) +{ + uint16_t address; + uint8_t *data; + int len = argc - 3; + int i; + enum command_result ret = command_success; + + if (len < 0) + return command_error; + if (parse_uint16(argv[2], &address) != command_success) + return command_error; + if (len == 0) + return command_success; + data = malloc(len); + if (!data) + return command_error; + for (i = 0; i < len; i++) + if (parse_uint8(argv[i+3], &data[i]) != command_success) + return command_error; + + if (strcmp(argv[1], "xram") == 0) { + ccdbg_write_memory(s51_dbg, address, data, len); + } else if (strcmp(argv[1], "iram") == 0) { + ccdbg_write_memory(s51_dbg, address + 0xff00, data, len); + } else if (strcmp(argv[1], "sfr") == 0) { + ccdbg_write_sfr(s51_dbg, (uint8_t) address, data, len); + } else + ret = command_error; + free(data); + return ret; +} + +enum command_result +command_dump (int argc, char **argv) +{ + if (argv[1]) { + if (strcmp(argv[1], "rom") == 0 || + strcmp(argv[1], "xram") == 0) + return command_dx(argc-1, argv+1); + if (strcmp(argv[1], "iram") == 0) + return command_di(argc-1, argv+1); + if (strcmp(argv[1], "sfr") == 0) + return command_ds(argc-1, argv+1); + } + return command_error; +} + +enum command_result +command_file (int argc, char **argv) +{ + struct hex_file *hex; + struct hex_image *image; + FILE *file; + + if (argc != 2) + return command_error; + file = fopen (argv[1], "r"); + if (!file) + return command_error; + hex = ccdbg_hex_file_read(file, argv[1]); + fclose(file); + if (!hex) + return command_error; + if (hex->nrecord == 0) { + ccdbg_hex_file_free(hex); + return command_error; + } + image = ccdbg_hex_image_create(hex); + ccdbg_hex_file_free(hex); + start_address = image->address; + ccdbg_set_rom(s51_dbg, image); + return command_success; +} + +enum command_result +command_pc (int argc, char **argv) +{ + uint16_t pc; + if (argv[1]) { + enum command_result result; + result = parse_uint16(argv[1], &pc); + if (result != command_success) + return result; + ccdbg_set_pc(s51_dbg, pc); + } else { + pc = ccdbg_get_pc(s51_dbg); + s51_printf(" 0x%04x 00\n", pc); + } + return command_success; +} + +struct cc_break { + int enabled; + int temporary; + uint16_t address; +}; + +#define CC_NUM_BREAKPOINTS 4 + +static struct cc_break breakpoints[CC_NUM_BREAKPOINTS]; + +static void +disable_breakpoint(int b) +{ + uint8_t status; + + status = ccdbg_set_hw_brkpnt(s51_dbg, b, 0, breakpoints[b].address); + if (status != 0x00 && status != 0xff) + s51_printf("disable_breakpoint status 0x%02x\n", status); +} + +static void +enable_breakpoint(int b) +{ + uint8_t status; + + status = ccdbg_set_hw_brkpnt(s51_dbg, b, 1, breakpoints[b].address); + if (status != 0xff) + s51_printf("enable_breakpoint status 0x%02x\n", status); +} + +static void +enable_breakpoints(void) +{ + int b; + for (b = 0; b < CC_NUM_BREAKPOINTS; b++) + if (breakpoints[b].enabled) + enable_breakpoint(b); +} + +enum command_result +set_breakpoint(uint16_t address, int temporary) +{ + int b; + uint8_t status; + for (b = 0; b < CC_NUM_BREAKPOINTS; b++) { + if (breakpoints[b].enabled == 0) + break; + if (breakpoints[b].address == address) + break; + } + if (b == CC_NUM_BREAKPOINTS) { + s51_printf("Error: too many breakpoints requested\n"); + return command_success; + } + if (breakpoints[b].enabled == 0) { + breakpoints[b].address = address; + enable_breakpoint(b); + } + ++breakpoints[b].enabled; + s51_printf("Breakpoint %d at 0x%04x\n", b, address); + breakpoints[b].temporary += temporary; + return command_success; +} + +enum command_result +clear_breakpoint(uint16_t address, int temporary) +{ + int b; + uint8_t status; + + for (b = 0; b < CC_NUM_BREAKPOINTS; b++) { + if (breakpoints[b].enabled != 0 && + ((breakpoints[b].temporary != 0) == (temporary != 0)) && + breakpoints[b].address == address) + break; + } + if (b == CC_NUM_BREAKPOINTS) { + s51_printf("Error: no matching breakpoint found\n"); + return command_success; + } + --breakpoints[b].enabled; + breakpoints[b].temporary -= temporary; + if (breakpoints[b].enabled == 0) { + disable_breakpoint(b); + breakpoints[b].address = -1; + } + return command_success; +} + + +int +find_breakpoint(uint16_t address) +{ + int b; + + for (b = 0; b < CC_NUM_BREAKPOINTS; b++) + if (breakpoints[b].enabled && breakpoints[b].address == address) + break; + if (b == CC_NUM_BREAKPOINTS) + return -1; + return b; +} + +enum command_result +command_break (int argc, char **argv) +{ + int b; + uint16_t address; + enum command_result result; + + if (argc == 1) { + for (b = 0; b < CC_NUM_BREAKPOINTS; b++) + if (breakpoints[b].enabled) + s51_printf("Breakpoint %d 0x%04x\n", + b, breakpoints[b].address); + return command_success; + } + if (argc != 2) + return command_error; + result = parse_uint16(argv[1], &address); + if (result != command_success) + return result; + + return set_breakpoint(address, 0); +} + +enum command_result +command_clear (int argc, char **argv) +{ + int b; + uint16_t address; + enum command_result result; + + if (argc != 2) + return command_error; + result = parse_uint16(argv[1], &address); + if (result != command_success) + return result; + return clear_breakpoint(address, 0); +} + +void +cc_stopped(uint8_t status) +{ + uint16_t pc; + int b; + int code; + char *reason; + + pc = ccdbg_get_pc(s51_dbg); + if (status & CC_STATUS_CPU_HALTED) { + if ((status & CC_STATUS_HALT_STATUS) != 0) { + pc = pc - 1; + code = 104; + reason = "Breakpoint"; + b = find_breakpoint(pc); + if (b != -1 && breakpoints[b].temporary) + clear_breakpoint(pc, 1); + ccdbg_set_pc(s51_dbg, pc); + } else { + code = 105; + reason = "Interrupt"; + } + s51_printf("Stop at 0x%04x: (%d) %s\n", + pc, code, reason); + } +} + +uint8_t +cc_step(uint16_t pc) +{ + int b; + uint8_t status; + + b = find_breakpoint(pc); + if (b != -1) + disable_breakpoint(b); + status = ccdbg_step_instr(s51_dbg); + if (b != -1) + enable_breakpoint(b); + return status; +} + +enum command_result +command_run (int argc, char **argv) +{ + uint16_t start, end; + enum command_result result; + uint16_t pc; + uint8_t status; + int b; + + if (argv[1]) { + result = parse_uint16(argv[1], &start); + if (result != command_success) + return result; + if (argv[2]) { + result = parse_uint16(argv[2], &end); + if (result != command_success) + return result; + } + if (start_address && start == 0) { + start = start_address; + s51_printf("Starting at 0x%04x\n", start); + } + ccdbg_set_pc(s51_dbg, start); + } + else + start = ccdbg_get_pc(s51_dbg); + s51_printf("Resume at 0x%04x\n", start); + pc = start; + b = find_breakpoint(pc); + if (b != -1) { + cc_step(pc); + pc = ccdbg_get_pc(s51_dbg); + if (find_breakpoint(pc) != -1) { + status = ccdbg_read_status(s51_dbg); + cc_stopped(status); + return command_success; + } + } + ccdbg_resume(s51_dbg); + result = cc_wait(); + return result; +} + +enum command_result +command_next (int argc, char **argv) +{ + return command_step(argc, argv); +} + +enum command_result +command_step (int argc, char **argv) +{ + uint16_t pc; + uint8_t opcode; + uint8_t a; + + a = cc_step(ccdbg_get_pc(s51_dbg)); + s51_printf(" ACC= 0x%02x\n", a); + pc = ccdbg_get_pc(s51_dbg); + ccdbg_read_memory(s51_dbg, pc, &opcode, 1); + s51_printf(" ? 0x%04x %02x\n", pc, opcode); + return command_success; +} + +enum command_result +command_load (int argc, char **argv) +{ + char *filename = argv[1]; + FILE *file; + struct hex_file *hex; + struct hex_image *image; + + if (!filename) + return command_error; + file = fopen(filename, "r"); + if (!file) { + perror(filename); + return command_error; + } + hex = ccdbg_hex_file_read(file, filename); + fclose(file); + if (!hex) { + return command_error; + } + image = ccdbg_hex_image_create(hex); + ccdbg_hex_file_free(hex); + if (!image) { + fprintf(stderr, "image create failed\n"); + return command_error; + } + if (image->address >= 0xf000) { + printf("Loading %d bytes to RAM at 0x%04x\n", + image->length, image->address); + ccdbg_write_hex_image(s51_dbg, image, 0); + } else { + fprintf(stderr, "Can only load to RAM\n"); + } + ccdbg_hex_image_free(image); + return command_success; +} + +enum command_result +command_halt (int argc, char **argv) +{ + uint16_t pc; + ccdbg_halt(s51_dbg); + pc = ccdbg_get_pc(s51_dbg); + s51_printf("Halted at 0x%04x\n", pc); + return command_success; +} + +enum command_result +command_stop (int argc, char **argv) +{ + return command_success; +} + +enum command_result +command_reset (int argc, char **argv) +{ + ccdbg_debug_mode(s51_dbg); + ccdbg_halt(s51_dbg); + enable_breakpoints(); + return command_success; +} + +enum command_result +command_status(int argc, char **argv) +{ + uint8_t status; + + status = ccdbg_read_status(s51_dbg); + if ((status & CC_STATUS_CHIP_ERASE_DONE) == 0) + s51_printf("\tChip erase in progress\n"); + if (status & CC_STATUS_PCON_IDLE) + s51_printf("\tCPU is idle (clock gated)\n"); + if (status & CC_STATUS_CPU_HALTED) + s51_printf("\tCPU halted\n"); + else + s51_printf("\tCPU running\n"); + if ((status & CC_STATUS_POWER_MODE_0) == 0) + s51_printf("\tPower Mode 1-3 selected\n"); + if (status & CC_STATUS_HALT_STATUS) + s51_printf("\tHalted by software or hw breakpoint\n"); + else + s51_printf("\tHalted by debug command\n"); + if (status & CC_STATUS_DEBUG_LOCKED) + s51_printf("\tDebug interface is locked\n"); + if ((status & CC_STATUS_OSCILLATOR_STABLE) == 0) + s51_printf("\tOscillators are not stable\n"); + if (status & CC_STATUS_STACK_OVERFLOW) + s51_printf("\tStack overflow\n"); + return command_success; +} + +static enum command_result +info_breakpoints(int argc, char **argv) +{ + int b; + uint16_t address; + enum command_result result; + + if (argc == 1) { + s51_printf("Num Type Disp Hit Cnt Address What\n"); + for (b = 0; b < CC_NUM_BREAKPOINTS; b++) + if (breakpoints[b].enabled) { + s51_printf("%-3d fetch %s 1 1 0x%04x uc::disass() unimplemented\n", + b, + breakpoints[b].temporary ? "del " : "keep", + breakpoints[b].address); + } + return command_success; + } + +} + +static enum command_result +info_help(int argc, char **argv); + +static struct command_function infos[] = { + { "breakpoints", "b", info_breakpoints, "[b]reakpoints", + "List current breakpoints\n" }, + { "help", "?", info_help, "help", + "Print this list\n" }, + + { NULL, NULL, NULL, NULL, NULL }, +}; + +static enum command_result +info_help(int argc, char **argv) +{ + return command_function_help(infos, argc, argv); +} + +enum command_result +command_info(int argc, char **argv) +{ + struct command_function *func; + + if (argc < 2) + return command_error; + func = command_string_to_function(infos, argv[1]); + if (!func) + return command_syntax; + return (*func->func)(argc-1, argv+1); +} + +enum command_result +cc_wait(void) +{ + for(;;) { + uint8_t status; + status = ccdbg_read_status(s51_dbg); + if (status & CC_STATUS_CPU_HALTED) { + cc_stopped(status); + return command_success; + } + if (s51_interrupted || s51_check_input()) { + + ccdbg_halt(s51_dbg); + status = ccdbg_read_status(s51_dbg); + cc_stopped(status); + return command_interrupt; + } + } +} |