+++ /dev/null
-/*
- * 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 "s51.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;
- }
- }
-}
projects / fw / altos / blobdiff