* ARM DDI 0405C (September 2008) *
* *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "algorithm.h"
#include "register.h"
-
#if 0
#define _DEBUG_INSTRUCTION_EXECUTION_
#endif
-/** Maps from enum armv7m_mode (except ARMV7M_MODE_ANY) to name. */
-char *armv7m_mode_strings[] =
-{
- "Thread", "Thread (User)", "Handler",
-};
-
-static char *armv7m_exception_strings[] =
-{
+static char *armv7m_exception_strings[] = {
"", "Reset", "NMI", "HardFault",
"MemManage", "BusFault", "UsageFault", "RESERVED",
"RESERVED", "RESERVED", "RESERVED", "SVCall",
"DebugMonitor", "RESERVED", "PendSV", "SysTick"
};
+/* PSP is used in some thread modes */
+const int armv7m_psp_reg_map[17] = {
+ ARMV7M_R0, ARMV7M_R1, ARMV7M_R2, ARMV7M_R3,
+ ARMV7M_R4, ARMV7M_R5, ARMV7M_R6, ARMV7M_R7,
+ ARMV7M_R8, ARMV7M_R9, ARMV7M_R10, ARMV7M_R11,
+ ARMV7M_R12, ARMV7M_PSP, ARMV7M_R14, ARMV7M_PC,
+ ARMV7M_xPSR,
+};
+
+/* MSP is used in handler and some thread modes */
+const int armv7m_msp_reg_map[17] = {
+ ARMV7M_R0, ARMV7M_R1, ARMV7M_R2, ARMV7M_R3,
+ ARMV7M_R4, ARMV7M_R5, ARMV7M_R6, ARMV7M_R7,
+ ARMV7M_R8, ARMV7M_R9, ARMV7M_R10, ARMV7M_R11,
+ ARMV7M_R12, ARMV7M_MSP, ARMV7M_R14, ARMV7M_PC,
+ ARMV7M_xPSR,
+};
+
#ifdef ARMV7_GDB_HACKS
uint8_t armv7m_gdb_dummy_cpsr_value[] = {0, 0, 0, 0};
-struct reg armv7m_gdb_dummy_cpsr_reg =
-{
+struct reg armv7m_gdb_dummy_cpsr_reg = {
.name = "GDB dummy cpsr register",
.value = armv7m_gdb_dummy_cpsr_value,
.dirty = 0,
*/
static const struct {
unsigned id;
- char *name;
+ const char *name;
unsigned bits;
} armv7m_regs[] = {
{ ARMV7M_R0, "r0", 32 },
{ ARMV7M_CONTROL, "control", 2 },
};
-#define ARMV7M_NUM_REGS ARRAY_SIZE(armv7m_regs)
+#define ARMV7M_NUM_REGS ARRAY_SIZE(armv7m_regs)
/**
* Restores target context using the cache of core registers set up
{
int i;
struct armv7m_common *armv7m = target_to_armv7m(target);
+ struct reg_cache *cache = armv7m->arm.core_cache;
LOG_DEBUG(" ");
if (armv7m->pre_restore_context)
armv7m->pre_restore_context(target);
- for (i = ARMV7M_NUM_REGS - 1; i >= 0; i--)
- {
- if (armv7m->core_cache->reg_list[i].dirty)
- {
- armv7m->write_core_reg(target, i);
+ for (i = ARMV7M_NUM_REGS - 1; i >= 0; i--) {
+ if (cache->reg_list[i].dirty) {
+ uint32_t value = buf_get_u32(cache->reg_list[i].value, 0, 32);
+ armv7m->arm.write_core_reg(target, &cache->reg_list[i], i, ARM_MODE_ANY, value);
}
}
- if (armv7m->post_restore_context)
- armv7m->post_restore_context(target);
-
return ERROR_OK;
}
static int armv7m_get_core_reg(struct reg *reg)
{
int retval;
- struct armv7m_core_reg *armv7m_reg = reg->arch_info;
+ struct arm_reg *armv7m_reg = reg->arch_info;
struct target *target = armv7m_reg->target;
- struct armv7m_common *armv7m = target_to_armv7m(target);
+ struct arm *arm = target_to_arm(target);
if (target->state != TARGET_HALTED)
- {
return ERROR_TARGET_NOT_HALTED;
- }
- retval = armv7m->read_core_reg(target, armv7m_reg->num);
+ retval = arm->read_core_reg(target, reg, armv7m_reg->num, arm->core_mode);
return retval;
}
static int armv7m_set_core_reg(struct reg *reg, uint8_t *buf)
{
- struct armv7m_core_reg *armv7m_reg = reg->arch_info;
+ struct arm_reg *armv7m_reg = reg->arch_info;
struct target *target = armv7m_reg->target;
uint32_t value = buf_get_u32(buf, 0, 32);
if (target->state != TARGET_HALTED)
- {
return ERROR_TARGET_NOT_HALTED;
- }
buf_set_u32(reg->value, 0, 32, value);
reg->dirty = 1;
return ERROR_OK;
}
-static int armv7m_read_core_reg(struct target *target, unsigned num)
+static int armv7m_read_core_reg(struct target *target, struct reg *r,
+ int num, enum arm_mode mode)
{
uint32_t reg_value;
int retval;
- struct armv7m_core_reg * armv7m_core_reg;
+ struct arm_reg *armv7m_core_reg;
struct armv7m_common *armv7m = target_to_armv7m(target);
- if (num >= ARMV7M_NUM_REGS)
- return ERROR_INVALID_ARGUMENTS;
+ assert(num < (int)armv7m->arm.core_cache->num_regs);
- armv7m_core_reg = armv7m->core_cache->reg_list[num].arch_info;
- retval = armv7m->load_core_reg_u32(target, armv7m_core_reg->type, armv7m_core_reg->num, ®_value);
- buf_set_u32(armv7m->core_cache->reg_list[num].value, 0, 32, reg_value);
- armv7m->core_cache->reg_list[num].valid = 1;
- armv7m->core_cache->reg_list[num].dirty = 0;
+ armv7m_core_reg = armv7m->arm.core_cache->reg_list[num].arch_info;
+ retval = armv7m->load_core_reg_u32(target,
+ armv7m_core_reg->num, ®_value);
+
+ buf_set_u32(armv7m->arm.core_cache->reg_list[num].value, 0, 32, reg_value);
+ armv7m->arm.core_cache->reg_list[num].valid = 1;
+ armv7m->arm.core_cache->reg_list[num].dirty = 0;
return retval;
}
-static int armv7m_write_core_reg(struct target *target, unsigned num)
+static int armv7m_write_core_reg(struct target *target, struct reg *r,
+ int num, enum arm_mode mode, uint32_t value)
{
int retval;
uint32_t reg_value;
- struct armv7m_core_reg *armv7m_core_reg;
+ struct arm_reg *armv7m_core_reg;
struct armv7m_common *armv7m = target_to_armv7m(target);
- if (num >= ARMV7M_NUM_REGS)
- return ERROR_INVALID_ARGUMENTS;
+ assert(num < (int)armv7m->arm.core_cache->num_regs);
- reg_value = buf_get_u32(armv7m->core_cache->reg_list[num].value, 0, 32);
- armv7m_core_reg = armv7m->core_cache->reg_list[num].arch_info;
- retval = armv7m->store_core_reg_u32(target, armv7m_core_reg->type, armv7m_core_reg->num, reg_value);
- if (retval != ERROR_OK)
- {
+ reg_value = buf_get_u32(armv7m->arm.core_cache->reg_list[num].value, 0, 32);
+ armv7m_core_reg = armv7m->arm.core_cache->reg_list[num].arch_info;
+ retval = armv7m->store_core_reg_u32(target,
+ armv7m_core_reg->num,
+ reg_value);
+ if (retval != ERROR_OK) {
LOG_ERROR("JTAG failure");
- armv7m->core_cache->reg_list[num].dirty = armv7m->core_cache->reg_list[num].valid;
+ armv7m->arm.core_cache->reg_list[num].dirty = armv7m->arm.core_cache->reg_list[num].valid;
return ERROR_JTAG_DEVICE_ERROR;
}
- LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", num , reg_value);
- armv7m->core_cache->reg_list[num].valid = 1;
- armv7m->core_cache->reg_list[num].dirty = 0;
+
+ LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", num, reg_value);
+ armv7m->arm.core_cache->reg_list[num].valid = 1;
+ armv7m->arm.core_cache->reg_list[num].dirty = 0;
return ERROR_OK;
}
int i;
*reg_list_size = 26;
- *reg_list = malloc(sizeof(struct reg*) * (*reg_list_size));
+ *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size));
/*
* GDB register packet format for ARM:
* - CPSR
*/
for (i = 0; i < 16; i++)
- {
- (*reg_list)[i] = &armv7m->core_cache->reg_list[i];
- }
+ (*reg_list)[i] = &armv7m->arm.core_cache->reg_list[i];
for (i = 16; i < 24; i++)
(*reg_list)[i] = &arm_gdb_dummy_fp_reg;
/* ARMV7M is always in thumb mode, try to make GDB understand this
* if it does not support this arch */
- *((char*)armv7m->arm.pc->value) |= 1;
+ *((char *)armv7m->arm.pc->value) |= 1;
#else
(*reg_list)[25] = &armv7m->core_cache->reg_list[ARMV7M_xPSR];
#endif
return ERROR_OK;
}
-/* run to exit point. return error if exit point was not reached. */
-static int armv7m_run_and_wait(struct target *target, uint32_t entry_point, int timeout_ms, uint32_t exit_point, struct armv7m_common *armv7m)
+/** Runs a Thumb algorithm in the target. */
+int armv7m_run_algorithm(struct target *target,
+ int num_mem_params, struct mem_param *mem_params,
+ int num_reg_params, struct reg_param *reg_params,
+ uint32_t entry_point, uint32_t exit_point,
+ int timeout_ms, void *arch_info)
{
- uint32_t pc;
int retval;
- /* This code relies on the target specific resume() and poll()->debug_entry()
- * sequence to write register values to the processor and the read them back */
- if ((retval = target_resume(target, 0, entry_point, 1, 1)) != ERROR_OK)
- {
- return retval;
- }
- retval = target_wait_state(target, TARGET_HALTED, timeout_ms);
- /* If the target fails to halt due to the breakpoint, force a halt */
- if (retval != ERROR_OK || target->state != TARGET_HALTED)
- {
- if ((retval = target_halt(target)) != ERROR_OK)
- return retval;
- if ((retval = target_wait_state(target, TARGET_HALTED, 500)) != ERROR_OK)
- {
- return retval;
- }
- return ERROR_TARGET_TIMEOUT;
- }
+ retval = armv7m_start_algorithm(target,
+ num_mem_params, mem_params,
+ num_reg_params, reg_params,
+ entry_point, exit_point,
+ arch_info);
- armv7m->load_core_reg_u32(target, ARMV7M_REGISTER_CORE_GP, 15, &pc);
- if (pc != exit_point)
- {
- LOG_DEBUG("failed algoritm halted at 0x%" PRIx32 " ", pc);
- return ERROR_TARGET_TIMEOUT;
- }
+ if (retval == ERROR_OK)
+ retval = armv7m_wait_algorithm(target,
+ num_mem_params, mem_params,
+ num_reg_params, reg_params,
+ exit_point, timeout_ms,
+ arch_info);
- return ERROR_OK;
+ return retval;
}
-/** Runs a Thumb algorithm in the target. */
-int armv7m_run_algorithm(struct target *target,
+/** Starts a Thumb algorithm in the target. */
+int armv7m_start_algorithm(struct target *target,
int num_mem_params, struct mem_param *mem_params,
int num_reg_params, struct reg_param *reg_params,
uint32_t entry_point, uint32_t exit_point,
- int timeout_ms, void *arch_info)
+ void *arch_info)
{
struct armv7m_common *armv7m = target_to_armv7m(target);
struct armv7m_algorithm *armv7m_algorithm_info = arch_info;
- enum armv7m_mode core_mode = armv7m->core_mode;
+ enum arm_mode core_mode = armv7m->arm.core_mode;
int retval = ERROR_OK;
- uint32_t context[ARMV7M_NUM_REGS];
/* NOTE: armv7m_run_algorithm requires that each algorithm uses a software breakpoint
* at the exit point */
- if (armv7m_algorithm_info->common_magic != ARMV7M_COMMON_MAGIC)
- {
+ if (armv7m_algorithm_info->common_magic != ARMV7M_COMMON_MAGIC) {
LOG_ERROR("current target isn't an ARMV7M target");
return ERROR_TARGET_INVALID;
}
- if (target->state != TARGET_HALTED)
- {
+ if (target->state != TARGET_HALTED) {
LOG_WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
- /* refresh core register cache */
- /* Not needed if core register cache is always consistent with target process state */
- for (unsigned i = 0; i < ARMV7M_NUM_REGS; i++)
- {
- if (!armv7m->core_cache->reg_list[i].valid)
- armv7m->read_core_reg(target, i);
- context[i] = buf_get_u32(armv7m->core_cache->reg_list[i].value, 0, 32);
+ /* refresh core register cache
+ * Not needed if core register cache is always consistent with target process state */
+ for (unsigned i = 0; i < ARMV7M_NUM_REGS; i++) {
+
+ armv7m_algorithm_info->context[i] = buf_get_u32(
+ armv7m->arm.core_cache->reg_list[i].value,
+ 0,
+ 32);
}
- for (int i = 0; i < num_mem_params; i++)
- {
- if ((retval = target_write_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value)) != ERROR_OK)
+ for (int i = 0; i < num_mem_params; i++) {
+ /* TODO: Write only out params */
+ retval = target_write_buffer(target, mem_params[i].address,
+ mem_params[i].size,
+ mem_params[i].value);
+ if (retval != ERROR_OK)
return retval;
}
- for (int i = 0; i < num_reg_params; i++)
- {
- struct reg *reg = register_get_by_name(armv7m->core_cache, reg_params[i].reg_name, 0);
-// uint32_t regvalue;
+ for (int i = 0; i < num_reg_params; i++) {
+ struct reg *reg =
+ register_get_by_name(armv7m->arm.core_cache, reg_params[i].reg_name, 0);
+/* uint32_t regvalue; */
- if (!reg)
- {
+ if (!reg) {
LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
- return ERROR_INVALID_ARGUMENTS;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
- if (reg->size != reg_params[i].size)
- {
- LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
- return ERROR_INVALID_ARGUMENTS;
+ if (reg->size != reg_params[i].size) {
+ LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size",
+ reg_params[i].reg_name);
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
-// regvalue = buf_get_u32(reg_params[i].value, 0, 32);
+/* regvalue = buf_get_u32(reg_params[i].value, 0, 32); */
armv7m_set_core_reg(reg, reg_params[i].value);
}
- if (armv7m_algorithm_info->core_mode != ARMV7M_MODE_ANY)
- {
+ if (armv7m_algorithm_info->core_mode != ARM_MODE_ANY) {
LOG_DEBUG("setting core_mode: 0x%2.2x", armv7m_algorithm_info->core_mode);
- buf_set_u32(armv7m->core_cache->reg_list[ARMV7M_CONTROL].value,
- 0, 1, armv7m_algorithm_info->core_mode);
- armv7m->core_cache->reg_list[ARMV7M_CONTROL].dirty = 1;
- armv7m->core_cache->reg_list[ARMV7M_CONTROL].valid = 1;
+ buf_set_u32(armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].value,
+ 0, 1, armv7m_algorithm_info->core_mode);
+ armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].dirty = 1;
+ armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].valid = 1;
}
+ armv7m_algorithm_info->core_mode = core_mode;
- retval = armv7m_run_and_wait(target, entry_point, timeout_ms, exit_point, armv7m);
+ retval = target_resume(target, 0, entry_point, 1, 1);
- if (retval != ERROR_OK)
- {
- return retval;
+ return retval;
+}
+
+/** Waits for an algorithm in the target. */
+int armv7m_wait_algorithm(struct target *target,
+ int num_mem_params, struct mem_param *mem_params,
+ int num_reg_params, struct reg_param *reg_params,
+ uint32_t exit_point, int timeout_ms,
+ void *arch_info)
+{
+ struct armv7m_common *armv7m = target_to_armv7m(target);
+ struct armv7m_algorithm *armv7m_algorithm_info = arch_info;
+ int retval = ERROR_OK;
+ uint32_t pc;
+
+ /* NOTE: armv7m_run_algorithm requires that each algorithm uses a software breakpoint
+ * at the exit point */
+
+ if (armv7m_algorithm_info->common_magic != ARMV7M_COMMON_MAGIC) {
+ LOG_ERROR("current target isn't an ARMV7M target");
+ return ERROR_TARGET_INVALID;
+ }
+
+ retval = target_wait_state(target, TARGET_HALTED, timeout_ms);
+ /* If the target fails to halt due to the breakpoint, force a halt */
+ if (retval != ERROR_OK || target->state != TARGET_HALTED) {
+ retval = target_halt(target);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = target_wait_state(target, TARGET_HALTED, 500);
+ if (retval != ERROR_OK)
+ return retval;
+ return ERROR_TARGET_TIMEOUT;
+ }
+
+ armv7m->load_core_reg_u32(target, 15, &pc);
+ if (exit_point && (pc != exit_point)) {
+ LOG_DEBUG("failed algorithm halted at 0x%" PRIx32 ", expected 0x%" PRIx32,
+ pc,
+ exit_point);
+ return ERROR_TARGET_TIMEOUT;
}
/* Read memory values to mem_params[] */
- for (int i = 0; i < num_mem_params; i++)
- {
- if (mem_params[i].direction != PARAM_OUT)
- if ((retval = target_read_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value)) != ERROR_OK)
- {
+ for (int i = 0; i < num_mem_params; i++) {
+ if (mem_params[i].direction != PARAM_OUT) {
+ retval = target_read_buffer(target, mem_params[i].address,
+ mem_params[i].size,
+ mem_params[i].value);
+ if (retval != ERROR_OK)
return retval;
- }
+ }
}
/* Copy core register values to reg_params[] */
- for (int i = 0; i < num_reg_params; i++)
- {
- if (reg_params[i].direction != PARAM_OUT)
- {
- struct reg *reg = register_get_by_name(armv7m->core_cache, reg_params[i].reg_name, 0);
+ for (int i = 0; i < num_reg_params; i++) {
+ if (reg_params[i].direction != PARAM_OUT) {
+ struct reg *reg = register_get_by_name(armv7m->arm.core_cache,
+ reg_params[i].reg_name,
+ 0);
- if (!reg)
- {
+ if (!reg) {
LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
- return ERROR_INVALID_ARGUMENTS;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
- if (reg->size != reg_params[i].size)
- {
- LOG_ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
- return ERROR_INVALID_ARGUMENTS;
+ if (reg->size != reg_params[i].size) {
+ LOG_ERROR(
+ "BUG: register '%s' size doesn't match reg_params[i].size",
+ reg_params[i].reg_name);
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
buf_set_u32(reg_params[i].value, 0, 32, buf_get_u32(reg->value, 0, 32));
}
}
- for (int i = ARMV7M_NUM_REGS - 1; i >= 0; i--)
- {
+ for (int i = ARMV7M_NUM_REGS - 1; i >= 0; i--) {
uint32_t regvalue;
- regvalue = buf_get_u32(armv7m->core_cache->reg_list[i].value, 0, 32);
- if (regvalue != context[i])
- {
+ regvalue = buf_get_u32(armv7m->arm.core_cache->reg_list[i].value, 0, 32);
+ if (regvalue != armv7m_algorithm_info->context[i]) {
LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32,
- armv7m->core_cache->reg_list[i].name, context[i]);
- buf_set_u32(armv7m->core_cache->reg_list[i].value,
- 0, 32, context[i]);
- armv7m->core_cache->reg_list[i].valid = 1;
- armv7m->core_cache->reg_list[i].dirty = 1;
+ armv7m->arm.core_cache->reg_list[i].name,
+ armv7m_algorithm_info->context[i]);
+ buf_set_u32(armv7m->arm.core_cache->reg_list[i].value,
+ 0, 32, armv7m_algorithm_info->context[i]);
+ armv7m->arm.core_cache->reg_list[i].valid = 1;
+ armv7m->arm.core_cache->reg_list[i].dirty = 1;
}
}
- armv7m->core_mode = core_mode;
+ armv7m->arm.core_mode = armv7m_algorithm_info->core_mode;
return retval;
}
struct arm *arm = &armv7m->arm;
uint32_t ctrl, sp;
- ctrl = buf_get_u32(armv7m->core_cache->reg_list[ARMV7M_CONTROL].value, 0, 32);
- sp = buf_get_u32(armv7m->core_cache->reg_list[ARMV7M_R13].value, 0, 32);
+ ctrl = buf_get_u32(arm->core_cache->reg_list[ARMV7M_CONTROL].value, 0, 32);
+ sp = buf_get_u32(arm->core_cache->reg_list[ARMV7M_R13].value, 0, 32);
LOG_USER("target halted due to %s, current mode: %s %s\n"
"xPSR: %#8.8" PRIx32 " pc: %#8.8" PRIx32 " %csp: %#8.8" PRIx32 "%s",
debug_reason_name(target),
- armv7m_mode_strings[armv7m->core_mode],
+ arm_mode_name(arm->core_mode),
armv7m_exception_string(armv7m->exception_number),
buf_get_u32(arm->cpsr->value, 0, 32),
buf_get_u32(arm->pc->value, 0, 32),
return ERROR_OK;
}
+
static const struct reg_arch_type armv7m_reg_type = {
.get = armv7m_get_core_reg,
.set = armv7m_set_core_reg,
struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
struct reg_cache *cache = malloc(sizeof(struct reg_cache));
struct reg *reg_list = calloc(num_regs, sizeof(struct reg));
- struct armv7m_core_reg *arch_info = calloc(num_regs, sizeof(struct armv7m_core_reg));
+ struct arm_reg *arch_info = calloc(num_regs, sizeof(struct arm_reg));
int i;
#ifdef ARMV7_GDB_HACKS
cache->reg_list = reg_list;
cache->num_regs = num_regs;
(*cache_p) = cache;
- armv7m->core_cache = cache;
- for (i = 0; i < num_regs; i++)
- {
+ for (i = 0; i < num_regs; i++) {
arch_info[i].num = armv7m_regs[i].id;
arch_info[i].target = target;
- arch_info[i].armv7m_common = armv7m;
+ arch_info[i].arm = arm;
+
reg_list[i].name = armv7m_regs[i].name;
reg_list[i].size = armv7m_regs[i].bits;
reg_list[i].value = calloc(1, 4);
return cache;
}
-int armv7m_setup_semihosting(struct target *target, int enable)
+static int armv7m_setup_semihosting(struct target *target, int enable)
{
/* nothing todo for armv7m */
return ERROR_OK;
struct arm *arm = &armv7m->arm;
armv7m->common_magic = ARMV7M_COMMON_MAGIC;
+ armv7m->fp_feature = FP_NONE;
arm->core_type = ARM_MODE_THREAD;
arm->arch_info = armv7m;
arm->setup_semihosting = armv7m_setup_semihosting;
- /* FIXME remove v7m-specific r/w core_reg functions;
- * use the generic ARM core support..
- */
- armv7m->read_core_reg = armv7m_read_core_reg;
- armv7m->write_core_reg = armv7m_write_core_reg;
+ arm->read_core_reg = armv7m_read_core_reg;
+ arm->write_core_reg = armv7m_write_core_reg;
return arm_init_arch_info(target, arm);
}
/** Generates a CRC32 checksum of a memory region. */
int armv7m_checksum_memory(struct target *target,
- uint32_t address, uint32_t count, uint32_t* checksum)
+ uint32_t address, uint32_t count, uint32_t *checksum)
{
struct working_area *crc_algorithm;
struct armv7m_algorithm armv7m_info;
struct reg_param reg_params[2];
int retval;
- static const uint16_t cortex_m3_crc_code[] = {
- 0x4602, /* mov r2, r0 */
- 0xF04F, 0x30FF, /* mov r0, #0xffffffff */
- 0x460B, /* mov r3, r1 */
- 0xF04F, 0x0400, /* mov r4, #0 */
- 0xE013, /* b ncomp */
- /* nbyte: */
- 0x5D11, /* ldrb r1, [r2, r4] */
- 0xF8DF, 0x7028, /* ldr r7, CRC32XOR */
- 0xEA80, 0x6001, /* eor r0, r0, r1, asl #24 */
-
- 0xF04F, 0x0500, /* mov r5, #0 */
- /* loop: */
- 0x2800, /* cmp r0, #0 */
- 0xEA4F, 0x0640, /* mov r6, r0, asl #1 */
- 0xF105, 0x0501, /* add r5, r5, #1 */
- 0x4630, /* mov r0, r6 */
- 0xBFB8, /* it lt */
- 0xEA86, 0x0007, /* eor r0, r6, r7 */
- 0x2D08, /* cmp r5, #8 */
- 0xD1F4, /* bne loop */
-
- 0xF104, 0x0401, /* add r4, r4, #1 */
- /* ncomp: */
- 0x429C, /* cmp r4, r3 */
- 0xD1E9, /* bne nbyte */
- 0xBE00, /* bkpt #0 */
- 0x1DB7, 0x04C1 /* CRC32XOR: .word 0x04C11DB7 */
+ /* see contrib/loaders/checksum/armv7m_crc.s for src */
+
+ static const uint8_t cortex_m3_crc_code[] = {
+ /* main: */
+ 0x02, 0x46, /* mov r2, r0 */
+ 0x00, 0x20, /* movs r0, #0 */
+ 0xC0, 0x43, /* mvns r0, r0 */
+ 0x0A, 0x4E, /* ldr r6, CRC32XOR */
+ 0x0B, 0x46, /* mov r3, r1 */
+ 0x00, 0x24, /* movs r4, #0 */
+ 0x0D, 0xE0, /* b ncomp */
+ /* nbyte: */
+ 0x11, 0x5D, /* ldrb r1, [r2, r4] */
+ 0x09, 0x06, /* lsls r1, r1, #24 */
+ 0x48, 0x40, /* eors r0, r0, r1 */
+ 0x00, 0x25, /* movs r5, #0 */
+ /* loop: */
+ 0x00, 0x28, /* cmp r0, #0 */
+ 0x02, 0xDA, /* bge notset */
+ 0x40, 0x00, /* lsls r0, r0, #1 */
+ 0x70, 0x40, /* eors r0, r0, r6 */
+ 0x00, 0xE0, /* b cont */
+ /* notset: */
+ 0x40, 0x00, /* lsls r0, r0, #1 */
+ /* cont: */
+ 0x01, 0x35, /* adds r5, r5, #1 */
+ 0x08, 0x2D, /* cmp r5, #8 */
+ 0xF6, 0xD1, /* bne loop */
+ 0x01, 0x34, /* adds r4, r4, #1 */
+ /* ncomp: */
+ 0x9C, 0x42, /* cmp r4, r3 */
+ 0xEF, 0xD1, /* bne nbyte */
+ 0x00, 0xBE, /* bkpt #0 */
+ 0xB7, 0x1D, 0xC1, 0x04 /* CRC32XOR: .word 0x04c11db7 */
};
- uint32_t i;
-
- if (target_alloc_working_area(target, sizeof(cortex_m3_crc_code), &crc_algorithm) != ERROR_OK)
- {
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
+ retval = target_alloc_working_area(target, sizeof(cortex_m3_crc_code), &crc_algorithm);
+ if (retval != ERROR_OK)
+ return retval;
- /* convert flash writing code into a buffer in target endianness */
- for (i = 0; i < ARRAY_SIZE(cortex_m3_crc_code); i++)
- if ((retval = target_write_u16(target, crc_algorithm->address + i*sizeof(uint16_t), cortex_m3_crc_code[i])) != ERROR_OK)
- {
- return retval;
- }
+ retval = target_write_buffer(target, crc_algorithm->address,
+ sizeof(cortex_m3_crc_code), (uint8_t *)cortex_m3_crc_code);
+ if (retval != ERROR_OK)
+ goto cleanup;
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
- armv7m_info.core_mode = ARMV7M_MODE_ANY;
+ armv7m_info.core_mode = ARM_MODE_ANY;
init_reg_param(®_params[0], "r0", 32, PARAM_IN_OUT);
init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
buf_set_u32(reg_params[0].value, 0, 32, address);
buf_set_u32(reg_params[1].value, 0, 32, count);
- if ((retval = target_run_algorithm(target, 0, NULL, 2, reg_params,
- crc_algorithm->address, crc_algorithm->address + (sizeof(cortex_m3_crc_code)-6), 20000, &armv7m_info)) != ERROR_OK)
- {
- LOG_ERROR("error executing cortex_m3 crc algorithm");
- destroy_reg_param(®_params[0]);
- destroy_reg_param(®_params[1]);
- target_free_working_area(target, crc_algorithm);
- return retval;
- }
+ int timeout = 20000 * (1 + (count / (1024 * 1024)));
+
+ retval = target_run_algorithm(target, 0, NULL, 2, reg_params, crc_algorithm->address,
+ crc_algorithm->address + (sizeof(cortex_m3_crc_code) - 6),
+ timeout, &armv7m_info);
- *checksum = buf_get_u32(reg_params[0].value, 0, 32);
+ if (retval == ERROR_OK)
+ *checksum = buf_get_u32(reg_params[0].value, 0, 32);
+ else
+ LOG_ERROR("error executing cortex_m3 crc algorithm");
destroy_reg_param(®_params[0]);
destroy_reg_param(®_params[1]);
+cleanup:
target_free_working_area(target, crc_algorithm);
- return ERROR_OK;
+ return retval;
}
/** Checks whether a memory region is zeroed. */
int armv7m_blank_check_memory(struct target *target,
- uint32_t address, uint32_t count, uint32_t* blank)
+ uint32_t address, uint32_t count, uint32_t *blank)
{
struct working_area *erase_check_algorithm;
struct reg_param reg_params[3];
struct armv7m_algorithm armv7m_info;
int retval;
- uint32_t i;
- static const uint16_t erase_check_code[] =
- {
+ /* see contrib/loaders/erase_check/armv7m_erase_check.s for src */
+
+ static const uint8_t erase_check_code[] = {
/* loop: */
- 0xF810, 0x3B01, /* ldrb r3, [r0], #1 */
- 0xEA02, 0x0203, /* and r2, r2, r3 */
- 0x3901, /* subs r1, r1, #1 */
- 0xD1F9, /* bne loop */
- 0xBE00, /* bkpt #0 */
+ 0x03, 0x78, /* ldrb r3, [r0] */
+ 0x01, 0x30, /* adds r0, #1 */
+ 0x1A, 0x40, /* ands r2, r2, r3 */
+ 0x01, 0x39, /* subs r1, r1, #1 */
+ 0xFA, 0xD1, /* bne loop */
+ 0x00, 0xBE /* bkpt #0 */
};
/* make sure we have a working area */
- if (target_alloc_working_area(target, sizeof(erase_check_code), &erase_check_algorithm) != ERROR_OK)
- {
+ if (target_alloc_working_area(target, sizeof(erase_check_code),
+ &erase_check_algorithm) != ERROR_OK)
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
- /* convert flash writing code into a buffer in target endianness */
- for (i = 0; i < ARRAY_SIZE(erase_check_code); i++)
- target_write_u16(target, erase_check_algorithm->address + i*sizeof(uint16_t), erase_check_code[i]);
+ retval = target_write_buffer(target, erase_check_algorithm->address,
+ sizeof(erase_check_code), (uint8_t *)erase_check_code);
+ if (retval != ERROR_OK)
+ return retval;
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
- armv7m_info.core_mode = ARMV7M_MODE_ANY;
+ armv7m_info.core_mode = ARM_MODE_ANY;
init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
buf_set_u32(reg_params[0].value, 0, 32, address);
init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
buf_set_u32(reg_params[2].value, 0, 32, 0xff);
- if ((retval = target_run_algorithm(target, 0, NULL, 3, reg_params,
- erase_check_algorithm->address, erase_check_algorithm->address + (sizeof(erase_check_code)-2), 10000, &armv7m_info)) != ERROR_OK)
- {
- destroy_reg_param(®_params[0]);
- destroy_reg_param(®_params[1]);
- destroy_reg_param(®_params[2]);
- target_free_working_area(target, erase_check_algorithm);
- return 0;
- }
+ retval = target_run_algorithm(target,
+ 0,
+ NULL,
+ 3,
+ reg_params,
+ erase_check_algorithm->address,
+ erase_check_algorithm->address + (sizeof(erase_check_code) - 2),
+ 10000,
+ &armv7m_info);
- *blank = buf_get_u32(reg_params[2].value, 0, 32);
+ if (retval == ERROR_OK)
+ *blank = buf_get_u32(reg_params[2].value, 0, 32);
destroy_reg_param(®_params[0]);
destroy_reg_param(®_params[1]);
target_free_working_area(target, erase_check_algorithm);
- return ERROR_OK;
+ return retval;
}
int armv7m_maybe_skip_bkpt_inst(struct target *target, bool *inst_found)
* then we have to manually step over it, otherwise
* the core will break again */
- if (target->debug_reason == DBG_REASON_BREAKPOINT)
- {
+ 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)
- {
+ 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;
}
}
- if (inst_found) {
+ 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.
- */
-
-
-/*
- * Return the debug ap baseaddress in hexadecimal;
- * no extra output to simplify script processing
- */
-COMMAND_HANDLER(handle_dap_baseaddr_command)
-{
- struct target *target = get_current_target(CMD_CTX);
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *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_baseaddr_command, swjdp);
-}
-
-/*
- * Return the debug ap id in hexadecimal;
- * no extra output to simplify script processing
- */
-COMMAND_HANDLER(handle_dap_apid_command)
-{
- struct target *target = get_current_target(CMD_CTX);
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *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);
-}
-
-COMMAND_HANDLER(handle_dap_apsel_command)
-{
- struct target *target = get_current_target(CMD_CTX);
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *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);
-}
-
-COMMAND_HANDLER(handle_dap_memaccess_command)
-{
- struct target *target = get_current_target(CMD_CTX);
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *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);
-}
-
-
-COMMAND_HANDLER(handle_dap_info_command)
-{
- struct target *target = get_current_target(CMD_CTX);
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *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;
- break;
- case 1:
- COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], apsel);
- break;
- default:
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
-
- return dap_info_command(CMD_CTX, swjdp, apsel);
-}
-
-/* FIXME this table should be part of generic DAP support, and
- * be shared by the ARMv7-A/R and ARMv7-M support ...
- */
-static const struct command_registration armv7m_exec_command_handlers[] = {
- {
- .name = "info",
- .handler = handle_dap_info_command,
- .mode = COMMAND_EXEC,
- .help = "display ROM table for MEM-AP "
- "(default currently selected AP)",
- .usage = "[ap_num]",
- },
- {
- .name = "apsel",
- .handler = handle_dap_apsel_command,
- .mode = COMMAND_EXEC,
- .help = "Set the currently selected AP (default 0) "
- "and display the result",
- .usage = "[ap_num]",
- },
- {
- .name = "apid",
- .handler = handle_dap_apid_command,
- .mode = COMMAND_EXEC,
- .help = "return ID register from AP "
- "(default currently selected AP)",
- .usage = "[ap_num]",
- },
- {
- .name = "baseaddr",
- .handler = handle_dap_baseaddr_command,
- .mode = COMMAND_EXEC,
- .help = "return debug base address from MEM-AP "
- "(default currently selected AP)",
- .usage = "[ap_num]",
- },
- {
- .name = "memaccess",
- .handler = handle_dap_memaccess_command,
- .mode = COMMAND_EXEC,
- .help = "set/get number of extra tck for MEM-AP memory "
- "bus access [0-255]",
- .usage = "[cycles]",
- },
- COMMAND_REGISTRATION_DONE
-};
const struct command_registration armv7m_command_handlers[] = {
{
.chain = arm_command_handlers,
},
{
- .name = "dap",
- .mode = COMMAND_EXEC,
- .help = "Cortex DAP command group",
- .chain = armv7m_exec_command_handlers,
+ .chain = dap_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
Code Review / openocd.git / blobdiff