Terminal read improvements (#1209)
* Preserve last address read from and length when reading a memory * Add support for "graceful" memory read rollover * Add extra padding for memories larger than 64kiB * Bu default, don't read more bytes than the memory contains * Prevent users from reading the same memory address twice * Remove >>> echo and print read/dump command * Only echo dump command in verbose mode
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Hans
GitHub
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bbd3ed21ef
commit
95363a11a7
117
src/term.c
117
src/term.c
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@ -203,7 +203,7 @@ static int chardump_line(char *buffer, unsigned char *p, int n, int pad) {
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}
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static int hexdump_buf(FILE *f, int startaddr, unsigned char *buf, int len) {
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static int hexdump_buf(FILE *f, AVRMEM *m, int startaddr, unsigned char *buf, int len) {
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char dst1[80];
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char dst2[80];
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@ -213,11 +213,16 @@ static int hexdump_buf(FILE *f, int startaddr, unsigned char *buf, int len) {
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int n = 16;
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if (n > len)
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n = len;
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if(addr + n > m->size)
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n = m->size - addr;
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hexdump_line(dst1, p, n, 48);
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chardump_line(dst2, p, n, 16);
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term_out("%04x %s |%s|\n", addr, dst1, dst2);
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term_out("%0*x %s |%s|\n", m->size > 0x10000 ? 5: 4, addr, dst1, dst2);
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len -= n;
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addr += n;
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if (addr >= m->size)
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addr = 0;
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p += n;
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}
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@ -226,7 +231,14 @@ static int hexdump_buf(FILE *f, int startaddr, unsigned char *buf, int len) {
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static int cmd_dump(PROGRAMMER *pgm, AVRPART *p, int argc, char *argv[]) {
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if (argc < 2 || argc > 4) {
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static struct mem_addr_len {
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int addr;
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int len;
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AVRMEM *mem;
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} read_mem[32];
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static int i;
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if ((argc < 2 && read_mem[0].mem == NULL) || argc > 4) {
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msg_error(
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"Usage: %s <memory> <addr> <len>\n"
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" %s <memory> <addr> ...\n"
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@ -238,89 +250,111 @@ static int cmd_dump(PROGRAMMER *pgm, AVRPART *p, int argc, char *argv[]) {
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}
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enum { read_size = 256 };
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static const char *prevmem = "";
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char *memtype = argv[1];
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char *memtype;
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if(argc > 1)
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memtype = argv[1];
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else
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memtype = (char*)read_mem[i].mem->desc;
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AVRMEM *mem = avr_locate_mem(p, memtype);
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if (mem == NULL) {
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pmsg_error("(dump) %s memory type not defined for part %s\n", memtype, p->desc);
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return -1;
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}
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int maxsize = mem->size;
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if(maxsize <= 0) { // Sanity check
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pmsg_error("cannot read memory %s of size %d\n", mem->desc, maxsize);
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return -1;
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}
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// Iterate through the read_mem structs to find relevant address and length info
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for(i = 0; i < 32; i++) {
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if(read_mem[i].mem == NULL)
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read_mem[i].mem = mem;
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if(read_mem[i].mem == mem) {
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if(read_mem[i].len == 0)
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read_mem[i].len = maxsize > read_size? read_size: maxsize;
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break;
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}
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}
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if(i >= 32) { // Catch highly unlikely case
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pmsg_error("read_mem[] under-dimensioned; increase and recompile\n");
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return -1;
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}
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// Get start address if present
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char *end_ptr;
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static int addr = 0;
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if (argc >= 3 && strcmp(argv[2], "...") != 0) {
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addr = strtoul(argv[2], &end_ptr, 0);
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if (*end_ptr || (end_ptr == argv[2])) {
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unsigned long ul = strtoul(argv[2], &end_ptr, 0);
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if(*end_ptr || (end_ptr == argv[2])) {
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pmsg_error("(dump) cannot parse address %s\n", argv[2]);
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return -1;
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} else if (addr < 0 || addr >= maxsize) {
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pmsg_error("(dump) %s address 0x%05x is out of range [0, 0x%05x]\n", mem->desc, addr, maxsize-1);
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}
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if(ul > INT_MAX || ul >= (unsigned long) maxsize) {
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pmsg_error("(dump) %s address 0x%lx is out of range [0, 0x%0*x]\n", mem->desc, ul,
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mem->size > 0x10000? 5: 4, maxsize-1);
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return -1;
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}
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read_mem[i].addr = (int) ul;
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}
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// Get no. bytes to read if present
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static int len = read_size;
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if (argc >= 3) {
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prevmem = cache_string("");
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if (strcmp(argv[argc - 1], "...") == 0) {
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if (argc == 3)
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addr = 0;
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len = maxsize - addr;
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read_mem[i].addr = 0;
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read_mem[i].len = maxsize - read_mem[i].addr;
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} else if (argc == 4) {
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len = strtol(argv[3], &end_ptr, 0);
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unsigned long ul = strtoul(argv[3], &end_ptr, 0);
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if (*end_ptr || (end_ptr == argv[3])) {
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pmsg_error("(dump) cannot parse length %s\n", argv[3]);
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return -1;
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}
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} else {
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len = read_size;
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if (ul == 0 || ul > INT_MAX) // Not positive if used as int, make it 1
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ul = 1;
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read_mem[i].len = (int) ul;
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}
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}
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// No address or length specified
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else if (argc == 2) {
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if (strncmp(prevmem, memtype, strlen(memtype)) != 0) {
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addr = 0;
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len = read_size;
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prevmem = cache_string(mem->desc);
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}
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if (addr >= maxsize)
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addr = 0; // Wrap around
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}
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// Wrap around if the memory address is greater than the maximum size
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if(read_mem[i].addr >= maxsize)
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read_mem[i].addr = 0; // Wrap around
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// Trim len if nessary to not read past the end of memory
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if ((addr + len) > maxsize)
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len = maxsize - addr;
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// Trim len if nessary to prevent reading from the same memory address twice
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if (read_mem[i].len > maxsize)
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read_mem[i].len = maxsize;
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uint8_t *buf = malloc(len);
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uint8_t *buf = malloc(read_mem[i].len);
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if (buf == NULL) {
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pmsg_error("(dump) out of memory\n");
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return -1;
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}
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if(argc < 4 && verbose)
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term_out(">>> %s %s 0x%x 0x%x\n", argv[0], read_mem[i].mem->desc, read_mem[i].addr, read_mem[i].len);
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report_progress(0, 1, "Reading");
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for (int i = 0; i < len; i++) {
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int rc = pgm->read_byte_cached(pgm, p, mem, addr + i, &buf[i]);
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for (int j = 0; j < read_mem[i].len; j++) {
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int addr = (read_mem[i].addr + j) % mem->size;
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int rc = pgm->read_byte_cached(pgm, p, read_mem[i].mem, addr, &buf[j]);
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if (rc != 0) {
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report_progress(1, -1, NULL);
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pmsg_error("(dump) error reading %s address 0x%05lx of part %s\n", mem->desc, (long) addr + i, p->desc);
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pmsg_error("(dump) error reading %s address 0x%05lx of part %s\n", mem->desc, (long) read_mem[i].addr + j, p->desc);
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if (rc == -1)
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imsg_error("%*sread operation not supported on memory type %s\n", 7, "", mem->desc);
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free(buf);
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return -1;
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}
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report_progress(i, len, NULL);
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report_progress(j, read_mem[i].len, NULL);
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}
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report_progress(1, 1, NULL);
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hexdump_buf(stdout, addr, buf, len);
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hexdump_buf(stdout, mem, read_mem[i].addr, buf, read_mem[i].len);
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term_out("\n");
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free(buf);
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addr = addr + len;
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read_mem[i].addr = (read_mem[i].addr + read_mem[i].len) % maxsize;
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return 0;
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}
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@ -1263,13 +1297,6 @@ static int process_line(char *cmdbuf, PROGRAMMER *pgm, struct avrpart *p) {
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if(!argv)
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return -1;
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#if !defined(HAVE_LIBREADLINE) || defined(WIN32) || defined(__APPLE__)
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term_out(">>> ");
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for (int i=0; i<argc; i++)
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term_out("%s ", argv[i]);
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term_out("\n");
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#endif
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// Run the command
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rc = do_cmd(pgm, p, argc, argv);
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free(argv);
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