/** Sets up target as a generic ARMv7-M core */
int armv7m_init_arch_info(struct target *target, struct armv7m_common *armv7m)
{
- /* register arch-specific functions */
+ armv7m->common_magic = ARMV7M_COMMON_MAGIC;
target->arch_info = armv7m;
armv7m->read_core_reg = armv7m_read_core_reg;
return ERROR_OK;
}
+int armv7m_maybe_skip_bkpt_inst(struct target *target, bool *inst_found)
+{
+ struct armv7m_common *armv7m = target_to_armv7m(target);
+ struct reg *r = armv7m->core_cache->reg_list + 15;
+ bool result = false;
+
+
+ /* if we halted last time due to a bkpt instruction
+ * then we have to manually step over it, otherwise
+ * the core will break again */
+
+ if (target->debug_reason == DBG_REASON_BREAKPOINT)
+ {
+ uint16_t op;
+ uint32_t pc = buf_get_u32(r->value, 0, 32);
+
+ pc &= ~1;
+ if (target_read_u16(target, pc, &op) == ERROR_OK)
+ {
+ if ((op & 0xFF00) == 0xBE00)
+ {
+ pc = buf_get_u32(r->value, 0, 32) + 2;
+ buf_set_u32(r->value, 0, 32, pc);
+ r->dirty = true;
+ r->valid = true;
+ result = true;
+ LOG_DEBUG("Skipping over BKPT instruction");
+ }
+ }
+ }
+
+ if (inst_found) {
+ *inst_found = result;
+ }
+
+ return ERROR_OK;
+}
+
/*--------------------------------------------------------------------------*/
/*
* Only stuff below this line should need to verify that its target
* is an ARMv7-M node.
- *
- * FIXME yet none of it _does_ verify target types yet!
*/
struct target *target = get_current_target(CMD_CTX);
struct armv7m_common *armv7m = target_to_armv7m(target);
struct swjdp_common *swjdp = &armv7m->swjdp_info;
- uint32_t apsel, apselsave, baseaddr;
- int retval;
- apselsave = swjdp->apsel;
- switch (CMD_ARGC) {
- case 0:
- apsel = swjdp->apsel;
- break;
- case 1:
- COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel);
- break;
- default:
- return ERROR_COMMAND_SYNTAX_ERROR;
+ if (!is_armv7m(armv7m)) {
+ command_print(CMD_CTX, "current target isn't an ARM7-M");
+ return ERROR_TARGET_INVALID;
}
- if (apselsave != apsel)
- dap_ap_select(swjdp, apsel);
-
- /* NOTE: assumes we're talking to a MEM-AP, which
- * has a base address. There are other kinds of AP,
- * though they're not common for now. This should
- * use the ID register to verify it's a MEM-AP.
- */
- dap_ap_read_reg_u32(swjdp, AP_REG_BASE, &baseaddr);
- retval = swjdp_transaction_endcheck(swjdp);
- command_print(CMD_CTX, "0x%8.8" PRIx32 "", baseaddr);
-
- if (apselsave != apsel)
- dap_ap_select(swjdp, apselsave);
-
- return retval;
+ return CALL_COMMAND_HANDLER(dap_baseaddr_command, swjdp);
}
/*
struct armv7m_common *armv7m = target_to_armv7m(target);
struct swjdp_common *swjdp = &armv7m->swjdp_info;
+ if (!is_armv7m(armv7m)) {
+ command_print(CMD_CTX, "current target isn't an ARM7-M");
+ return ERROR_TARGET_INVALID;
+ }
+
return CALL_COMMAND_HANDLER(dap_apid_command, swjdp);
}
struct armv7m_common *armv7m = target_to_armv7m(target);
struct swjdp_common *swjdp = &armv7m->swjdp_info;
+ if (!is_armv7m(armv7m)) {
+ command_print(CMD_CTX, "current target isn't an ARM7-M");
+ return ERROR_TARGET_INVALID;
+ }
+
return CALL_COMMAND_HANDLER(dap_apsel_command, swjdp);
}
struct armv7m_common *armv7m = target_to_armv7m(target);
struct swjdp_common *swjdp = &armv7m->swjdp_info;
+ if (!is_armv7m(armv7m)) {
+ command_print(CMD_CTX, "current target isn't an ARM7-M");
+ return ERROR_TARGET_INVALID;
+ }
+
return CALL_COMMAND_HANDLER(dap_memaccess_command, swjdp);
}
struct swjdp_common *swjdp = &armv7m->swjdp_info;
uint32_t apsel;
+ if (!is_armv7m(armv7m)) {
+ command_print(CMD_CTX, "current target isn't an ARM7-M");
+ return ERROR_TARGET_INVALID;
+ }
+
switch (CMD_ARGC) {
case 0:
apsel = swjdp->apsel;