* Copyright (C) 2008 digenius technology GmbH. *
* Michael Bruck *
* *
- * Copyright (C) 2008 Oyvind Harboe oyvind.harboe@zylin.com *
+ * Copyright (C) 2008,2009 Oyvind Harboe oyvind.harboe@zylin.com *
* *
* Copyright (C) 2008 Georg Acher <acher@in.tum.de> *
* *
#endif
#include "arm11.h"
+#include "armv4_5.h"
+#include "arm_simulator.h"
#include "target_type.h"
uint32_t arm11_vcr = 0;
bool arm11_config_memrw_no_increment = false;
bool arm11_config_step_irq_enable = false;
+bool arm11_config_hardware_step = false;
#define ARM11_HANDLER(x) \
.x = arm11_##x
*/
static int arm11_on_enter_debug_state(arm11_common_t * arm11)
{
+ int retval;
FNC_INFO;
for (size_t i = 0; i < asizeof(arm11->reg_values); i++)
for (size_t i = 0; i < 15; i++)
{
/* MCR p14,0,R?,c0,c5,0 */
- arm11_run_instr_data_from_core(arm11, 0xEE000E15 | (i << 12), &R(RX + i), 1);
+ retval = arm11_run_instr_data_from_core(arm11, 0xEE000E15 | (i << 12), &R(RX + i), 1);
+ if (retval != ERROR_OK)
+ return retval;
}
/* save rDTR */
/* save PC */
/* MOV R0,PC (move PC -> r0 (-> wDTR -> local var)) */
- arm11_run_instr_data_from_core_via_r0(arm11, 0xE1A0000F, &R(PC));
+ retval = arm11_run_instr_data_from_core_via_r0(arm11, 0xE1A0000F, &R(PC));
+ if (retval != ERROR_OK)
+ return retval;
/* adjust PC depending on ARM state */
int arm11_poll(struct target_s *target)
{
FNC_INFO;
+ int retval;
arm11_common_t * arm11 = target->arch_info;
LOG_DEBUG("enter TARGET_HALTED");
target->state = TARGET_HALTED;
target->debug_reason = arm11_get_DSCR_debug_reason(dscr);
- arm11_on_enter_debug_state(arm11);
+ retval = arm11_on_enter_debug_state(arm11);
+ if (retval != ERROR_OK)
+ return retval;
target_call_event_callbacks(target,
old_state == TARGET_DEBUG_RUNNING ? TARGET_EVENT_DEBUG_HALTED : TARGET_EVENT_HALTED);
arm11_common_t * arm11 = target->arch_info;
LOG_DEBUG("target->state: %s",
- Jim_Nvp_value2name_simple(nvp_target_state, target->state)->name);
+ target_state_name(target));
if (target->state == TARGET_UNKNOWN)
{
arm11_common_t * arm11 = target->arch_info;
LOG_DEBUG("target->state: %s",
- Jim_Nvp_value2name_simple(nvp_target_state, target->state)->name);
+ target_state_name(target));
if (target->state != TARGET_HALTED)
return ERROR_OK;
}
+
+static int armv4_5_to_arm11(int reg)
+{
+ if (reg < 16)
+ return reg;
+ switch (reg)
+ {
+ case ARMV4_5_CPSR:
+ return ARM11_RC_CPSR;
+ case 16:
+ /* FIX!!! handle thumb better! */
+ return ARM11_RC_CPSR;
+ default:
+ LOG_ERROR("BUG: register translation from armv4_5 to arm11 not supported %d", reg);
+ exit(-1);
+ }
+}
+
+
+static uint32_t arm11_sim_get_reg(struct arm_sim_interface *sim, int reg)
+{
+ arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
+
+ reg=armv4_5_to_arm11(reg);
+
+ return buf_get_u32(arm11->reg_list[reg].value, 0, 32);
+}
+
+static void arm11_sim_set_reg(struct arm_sim_interface *sim, int reg, uint32_t value)
+{
+ arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
+
+ reg=armv4_5_to_arm11(reg);
+
+ buf_set_u32(arm11->reg_list[reg].value, 0, 32, value);
+}
+
+static uint32_t arm11_sim_get_cpsr(struct arm_sim_interface *sim, int pos, int bits)
+{
+ arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
+
+ return buf_get_u32(arm11->reg_list[ARM11_RC_CPSR].value, pos, bits);
+}
+
+static enum armv4_5_state arm11_sim_get_state(struct arm_sim_interface *sim)
+{
+// arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
+
+ /* FIX!!!! we should implement thumb for arm11 */
+ return ARMV4_5_STATE_ARM;
+}
+
+static void arm11_sim_set_state(struct arm_sim_interface *sim, enum armv4_5_state mode)
+{
+// arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
+
+ /* FIX!!!! we should implement thumb for arm11 */
+ LOG_ERROR("Not implemetned!");
+}
+
+
+static enum armv4_5_mode arm11_sim_get_mode(struct arm_sim_interface *sim)
+{
+ //arm11_common_t * arm11 = (arm11_common_t *)sim->user_data;
+
+ /* FIX!!!! we should implement something that returns the current mode here!!! */
+ return ARMV4_5_MODE_USR;
+}
+
+static int arm11_simulate_step(target_t *target, uint32_t *dry_run_pc)
+{
+ struct arm_sim_interface sim;
+
+ sim.user_data=target->arch_info;
+ sim.get_reg=&arm11_sim_get_reg;
+ sim.set_reg=&arm11_sim_set_reg;
+ sim.get_reg_mode=&arm11_sim_get_reg;
+ sim.set_reg_mode=&arm11_sim_set_reg;
+ sim.get_cpsr=&arm11_sim_get_cpsr;
+ sim.get_mode=&arm11_sim_get_mode;
+ sim.get_state=&arm11_sim_get_state;
+ sim.set_state=&arm11_sim_set_state;
+
+ return arm_simulate_step_core(target, dry_run_pc, &sim);
+
+}
+
int arm11_step(struct target_s *target, int current, uint32_t address, int handle_breakpoints)
{
FNC_INFO;
LOG_DEBUG("target->state: %s",
- Jim_Nvp_value2name_simple(nvp_target_state, target->state)->name);
+ target_state_name(target));
if (target->state != TARGET_HALTED)
{
LOG_DEBUG("STEP PC %08" PRIx32 "%s", R(PC), !current ? "!" : "");
+
/** \todo TODO: Thumb not supported here */
uint32_t next_instruction;
brp[0].write = 1;
brp[0].address = ARM11_SC7_BVR0;
- brp[0].value = R(PC);
brp[1].write = 1;
brp[1].address = ARM11_SC7_BCR0;
- brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (2 << 21);
+
+ if (arm11_config_hardware_step)
+ {
+ /* hardware single stepping be used if possible or is it better to
+ * always use the same code path? Hardware single stepping is not supported
+ * on all hardware
+ */
+ brp[0].value = R(PC);
+ brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (2 << 21);
+ } else
+ {
+ /* sets a breakpoint on the next PC(calculated by simulation),
+ */
+ uint32_t next_pc;
+ int retval;
+ retval = arm11_simulate_step(target, &next_pc);
+ if (retval != ERROR_OK)
+ return retval;
+
+ brp[0].value = next_pc;
+ brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (0 << 21);
+ }
CHECK_RETVAL(arm11_sc7_run(arm11, brp, asizeof(brp)));
#if 0
LOG_DEBUG("target->state: %s",
- Jim_Nvp_value2name_simple(nvp_target_state, target->state)->name);
+ target_state_name(target));
/* deassert reset lines */
arm11_run_instr_data_from_core(arm11, 0xEE001E15, &res, 1);
uint16_t svalue = res;
- memcpy(buffer + count * sizeof(uint16_t), &svalue, sizeof(uint16_t));
+ memcpy(buffer + i * sizeof(uint16_t), &svalue, sizeof(uint16_t));
}
break;
for (size_t i = 0; i < count; i++)
{
uint16_t value;
- memcpy(&value, buffer + count * sizeof(uint16_t), sizeof(uint16_t));
+ memcpy(&value, buffer + i * sizeof(uint16_t), sizeof(uint16_t));
/* MRC p14,0,r1,c0,c5,0 */
arm11_run_instr_data_to_core1(arm11, 0xee101e15, value);
BOOL_WRAPPER(memwrite_error_fatal, "fatal error mode for memory writes")
BOOL_WRAPPER(memrw_no_increment, "\"no increment\" mode for memory transfers")
BOOL_WRAPPER(step_irq_enable, "IRQs while stepping")
+BOOL_WRAPPER(hardware_step, "hardware single step")
int arm11_handle_vcr(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
RC_FINAL_BOOL("no_increment", "Don't increment address on multi-read/-write (default: disabled)",
memrw_no_increment)
- RC_FINAL_BOOL("step_irq_enable", "Enable interrupts while stepping (default: disabled)",
- step_irq_enable)
+RC_FINAL_BOOL("step_irq_enable", "Enable interrupts while stepping (default: disabled)",
+ step_irq_enable)
+RC_FINAL_BOOL("hardware_step", "hardware single stepping. By default use simulate + breakpoint. This command is only here to check if simulate + breakpoint implementation is broken.",
+ hardware_step)
RC_FINAL("vcr", "Control (Interrupt) Vector Catch Register",
arm11_handle_vcr)
projects / openocd / blobdiff