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target/arm: make 'arm core_state' command compatible with Cortex-M 

Tcl command 'arm core_state' was exposed even on Cortex-M devices.
However it returned message "Unsupported Command" without error status
on such device.

Set the only possible arm->core_state ARM_STATE_THUMB in armv7m init.
Block setting core_state to arm on Cortex-M.

Change-Id: I9525553ac8863a6cf77bbacbcd57e354b6cfe1ca
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/7100
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Tested-by: jenkins
This commit is contained in:
Tomas Vanek 2022-08-01 19:06:35 +02:00
parent b6dad912b8
commit dee7b7d821
2 changed files with 13 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/target/armv4_5.c
View File

@ -905,32 +905,33 @@ COMMAND_HANDLER(handle_armv4_5_reg_command)
return ERROR_OK;
}
COMMAND_HANDLER(handle_armv4_5_core_state_command)
COMMAND_HANDLER(handle_arm_core_state_command)
{
struct target *target = get_current_target(CMD_CTX);
struct arm *arm = target_to_arm(target);
int ret = ERROR_OK;
if (!is_arm(arm)) {
command_print(CMD, "current target isn't an ARM");
return ERROR_FAIL;
}
if (arm->core_type == ARM_CORE_TYPE_M_PROFILE) {
/* armv7m not supported */
command_print(CMD, "Unsupported Command");
return ERROR_OK;
}
if (CMD_ARGC > 0) {
if (strcmp(CMD_ARGV[0], "arm") == 0)
arm->core_state = ARM_STATE_ARM;
if (strcmp(CMD_ARGV[0], "arm") == 0) {
if (arm->core_type == ARM_CORE_TYPE_M_PROFILE) {
command_print(CMD, "arm mode not supported on Cortex-M");
ret = ERROR_FAIL;
} else {
arm->core_state = ARM_STATE_ARM;
}
}
if (strcmp(CMD_ARGV[0], "thumb") == 0)
arm->core_state = ARM_STATE_THUMB;
}
command_print(CMD, "core state: %s", arm_state_strings[arm->core_state]);
return ERROR_OK;
return ret;
}
COMMAND_HANDLER(handle_arm_disassemble_command)
@ -1126,7 +1127,7 @@ static const struct command_registration arm_exec_command_handlers[] = {
},
{
.name = "core_state",
.handler = handle_armv4_5_core_state_command,
.handler = handle_arm_core_state_command,
.mode = COMMAND_EXEC,
.usage = "['arm'|'thumb']",
.help = "display/change ARM core state",

1
src/target/armv7m.c
View File

@ -854,6 +854,7 @@ int armv7m_init_arch_info(struct target *target, struct armv7m_common *armv7m)
/* Enable stimulus port #0 by default */
armv7m->trace_config.itm_ter[0] = 1;
arm->core_state = ARM_STATE_THUMB;
arm->core_type = ARM_CORE_TYPE_M_PROFILE;
arm->arch_info = armv7m;
arm->setup_semihosting = armv7m_setup_semihosting;