X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=s51%2Fs51-command.c;fp=s51%2Fs51-command.c;h=4f803060dbc801c17e68685ed9903762daa06ac2;hp=0000000000000000000000000000000000000000;hb=17d2432a8b9c15963cd3b821f025ad33972ef477;hpb=210dbaa23cdacf3a6f2d6e23493e96ee2ac9bca7

diff --git a/s51/s51-command.c b/s51/s51-command.c
new file mode 100644
index 00000000..4f803060
--- /dev/null
+++ b/s51/s51-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 "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;
+		}
+	}
+}