summaryrefslogtreecommitdiff
path: root/src/target
diff options
context:
space:
mode:
authorzwelch <zwelch@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2009-05-31 06:00:28 +0000
committerzwelch <zwelch@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2009-05-31 06:00:28 +0000
commit678519311834fd7a1126f8d217c734d4f5ffbb3d (patch)
treea7648d09dc00a1cb2a57aa6645d5bf90fbdf05e9 /src/target
parent55f21192b0e0ae82cee6b69eb87b501acf414751 (diff)
downloadopenocd_libswd-678519311834fd7a1126f8d217c734d4f5ffbb3d.tar.gz
openocd_libswd-678519311834fd7a1126f8d217c734d4f5ffbb3d.tar.bz2
openocd_libswd-678519311834fd7a1126f8d217c734d4f5ffbb3d.tar.xz
openocd_libswd-678519311834fd7a1126f8d217c734d4f5ffbb3d.zip
Simplify the handle_md_command routine in target.c:
- fix buffer overrun in mdw; final '\0' would overflow the output buffer. - return ERROR_COMMAND_SYNTAX_ERROR instead of ERROR_OK if: - less than one argument is provided - the command is called with a name other than mdb, mdh, or mdw. - factor all command output into new handle_md_output function git-svn-id: svn://svn.berlios.de/openocd/trunk@1958 b42882b7-edfa-0310-969c-e2dbd0fdcd60
Diffstat (limited to 'src/target')
-rw-r--r--src/target/target.c119
1 files changed, 61 insertions, 58 deletions
diff --git a/src/target/target.c b/src/target/target.c
index aa3705a0..d56f5e31 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -1844,77 +1844,80 @@ static int handle_step_command(struct command_context_s *cmd_ctx, char *cmd, cha
return ERROR_OK;
}
-static int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static void handle_md_output(struct command_context_s *cmd_ctx,
+ struct target_s *target, u32 address, unsigned size,
+ unsigned count, const u8 *buffer)
{
- const int line_bytecnt = 32;
- int count = 1;
- int size = 4;
- u32 address = 0;
- int line_modulo;
- int i;
+ const unsigned line_bytecnt = 32;
+ unsigned line_modulo = line_bytecnt / size;
- char output[128];
- int output_len;
+ char output[line_bytecnt * 4 + 1];
+ unsigned output_len = 0;
- int retval;
+ const char *value_fmt;
+ switch (size) {
+ case 4: value_fmt = "%8.8x"; break;
+ case 2: value_fmt = "%4.2x"; break;
+ case 1: value_fmt = "%2.2x"; break;
+ default:
+ LOG_ERROR("invalid memory read size: %u", size);
+ exit(-1);
+ }
- u8 *buffer;
- target_t *target = get_current_target(cmd_ctx);
+ for (unsigned i = 0; i < count; i++)
+ {
+ if (i % line_modulo == 0)
+ {
+ output_len += snprintf(output + output_len,
+ sizeof(output) - output_len,
+ "0x%8.8x: ", address + (i*size));
+ }
- if (argc < 1)
- return ERROR_OK;
+ u32 value;
+ const u8 *value_ptr = buffer + i * size;
+ switch (size) {
+ case 4: value = target_buffer_get_u32(target, value_ptr); break;
+ case 2: value = target_buffer_get_u16(target, value_ptr); break;
+ case 1: value = *value_ptr;
+ }
+ output_len += snprintf(output + output_len,
+ sizeof(output) - output_len,
+ value_fmt, value);
- if (argc == 2)
- count = strtoul(args[1], NULL, 0);
+ if ((i % line_modulo == line_modulo - 1) || (i == count - 1))
+ {
+ command_print(cmd_ctx, "%s", output);
+ output_len = 0;
+ }
+ }
+}
- address = strtoul(args[0], NULL, 0);
+static int handle_md_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ if (argc < 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- switch (cmd[2])
- {
- case 'w':
- size = 4; line_modulo = line_bytecnt / 4;
- break;
- case 'h':
- size = 2; line_modulo = line_bytecnt / 2;
- break;
- case 'b':
- size = 1; line_modulo = line_bytecnt / 1;
- break;
- default:
- return ERROR_OK;
+ unsigned size = 0;
+ switch (cmd[2]) {
+ case 'w': size = 4; break;
+ case 'h': size = 2; break;
+ case 'b': size = 1; break;
+ default: return ERROR_COMMAND_SYNTAX_ERROR;
}
- buffer = calloc(count, size);
- retval = target->type->read_memory(target, address, size, count, buffer);
- if (retval == ERROR_OK)
- {
- output_len = 0;
+ u32 address = strtoul(args[0], NULL, 0);
- for (i = 0; i < count; i++)
- {
- if (i%line_modulo == 0)
- output_len += snprintf(output + output_len, 128 - output_len, "0x%8.8x: ", address + (i*size));
+ unsigned count = 1;
+ if (argc == 2)
+ count = strtoul(args[1], NULL, 0);
- switch (size)
- {
- case 4:
- output_len += snprintf(output + output_len, 128 - output_len, "%8.8x ", target_buffer_get_u32(target, &buffer[i*4]));
- break;
- case 2:
- output_len += snprintf(output + output_len, 128 - output_len, "%4.4x ", target_buffer_get_u16(target, &buffer[i*2]));
- break;
- case 1:
- output_len += snprintf(output + output_len, 128 - output_len, "%2.2x ", buffer[i*1]);
- break;
- }
+ u8 *buffer = calloc(count, size);
- if ((i%line_modulo == line_modulo-1) || (i == count - 1))
- {
- command_print(cmd_ctx, "%s", output);
- output_len = 0;
- }
- }
- }
+ target_t *target = get_current_target(cmd_ctx);
+ int retval = target->type->read_memory(target,
+ address, size, count, buffer);
+ if (ERROR_OK == retval)
+ handle_md_output(cmd_ctx, target, address, size, count, buffer);
free(buffer);