static void xscale_getbuf(jtag_callback_data_t arg)
{
uint8_t *in = (uint8_t *)arg;
- *((uint32_t *)in) = buf_get_u32(in, 0, 32);
+ *((uint32_t *)arg) = buf_get_u32(in, 0, 32);
}
static int xscale_receive(struct target *target, uint32_t *buffer, int num_words)
memset(&fields, 0, sizeof fields);
fields[0].num_bits = 3;
+ uint8_t tmp;
+ fields[0].in_value = &tmp;
fields[0].check_value = &field0_check_value;
fields[0].check_mask = &field0_check_mask;
fields[1].num_bits = 32;
fields[2].num_bits = 1;
+ uint8_t tmp2;
+ fields[2].in_value = &tmp2;
fields[2].check_value = &field2_check_value;
fields[2].check_mask = &field2_check_mask;
/* examine results */
for (i = words_done; i < num_words; i++)
{
- if (!(field0[0] & 1))
+ if (!(field0[i] & 1))
{
/* move backwards if necessary */
int j;
}
/* send count elements of size byte to the debug handler */
-static int xscale_send(struct target *target, uint8_t *buffer, int count, int size)
+static int xscale_send(struct target *target, const uint8_t *buffer, int count, int size)
{
struct xscale_common *xscale = target_to_xscale(target);
uint32_t t[3];
xscale->armv4_5_mmu.armv4_5_cache.i_cache_enabled = (xscale->cp15_control_reg & 0x1000U) ? 1 : 0;
/* tracing enabled, read collected trace data */
- if (xscale->trace.buffer_enabled)
+ if (xscale->trace.mode != XSCALE_TRACE_DISABLED)
{
xscale_read_trace(target);
- xscale->trace.buffer_fill--;
- /* resume if we're still collecting trace data */
- if ((xscale->arch_debug_reason == XSCALE_DBG_REASON_TB_FULL)
- && (xscale->trace.buffer_fill > 0))
+ /* Resume if entered debug due to buffer fill and we're still collecting
+ * trace data. Note that a debug exception due to trace buffer full
+ * can only happen in fill mode. */
+ if (xscale->arch_debug_reason == XSCALE_DBG_REASON_TB_FULL)
{
+ if (--xscale->trace.fill_counter > 0)
xscale_resume(target, 1, 0x0, 1, 0);
}
- else
- {
- xscale->trace.buffer_enabled = 0;
- }
+ else /* entered debug for other reason; reset counter */
+ xscale->trace.fill_counter = 0;
}
return ERROR_OK;
}
}
+static void xscale_free_trace_data(struct xscale_common *xscale)
+{
+ struct xscale_trace_data *td = xscale->trace.data;
+ while (td)
+ {
+ struct xscale_trace_data *next_td = td->next;
+ if (td->entries)
+ free(td->entries);
+ free(td);
+ td = next_td;
+ }
+ xscale->trace.data = NULL;
+}
+
static int xscale_resume(struct target *target, int current,
uint32_t address, int handle_breakpoints, int debug_execution)
{
struct xscale_common *xscale = target_to_xscale(target);
struct arm *armv4_5 = &xscale->armv4_5_common;
- struct breakpoint *breakpoint = target->breakpoints;
uint32_t current_pc;
int retval;
int i;
/* the front-end may request us not to handle breakpoints */
if (handle_breakpoints)
{
+ struct breakpoint *breakpoint;
breakpoint = breakpoint_find(target,
buf_get_u32(armv4_5->pc->value, 0, 32));
if (breakpoint != NULL)
{
uint32_t next_pc;
- int saved_trace_buffer_enabled;
+ enum trace_mode saved_trace_mode;
/* there's a breakpoint at the current PC, we have to step over it */
LOG_DEBUG("unset breakpoint at 0x%8.8" PRIx32 "", breakpoint->address);
/* restore banked registers */
retval = xscale_restore_banked(target);
+ if (retval != ERROR_OK)
+ return retval;
/* send resume request */
xscale_send_u32(target, 0x30);
buf_get_u32(armv4_5->pc->value, 0, 32));
/* disable trace data collection in xscale_debug_entry() */
- saved_trace_buffer_enabled = xscale->trace.buffer_enabled;
- xscale->trace.buffer_enabled = 0;
+ saved_trace_mode = xscale->trace.mode;
+ xscale->trace.mode = XSCALE_TRACE_DISABLED;
/* wait for and process debug entry */
xscale_debug_entry(target);
/* re-enable trace buffer, if enabled previously */
- xscale->trace.buffer_enabled = saved_trace_buffer_enabled;
+ xscale->trace.mode = saved_trace_mode;
LOG_DEBUG("disable single-step");
xscale_disable_single_step(target);
/* restore banked registers */
retval = xscale_restore_banked(target);
+ if (retval != ERROR_OK)
+ return retval;
/* send resume request (command 0x30 or 0x31)
* clean the trace buffer if it is to be enabled (0x62) */
- if (xscale->trace.buffer_enabled)
+ if (xscale->trace.mode != XSCALE_TRACE_DISABLED)
{
+ if (xscale->trace.mode == XSCALE_TRACE_FILL)
+ {
+ /* If trace enabled in fill mode and starting collection of new set
+ * of buffers, initialize buffer counter and free previous buffers */
+ if (xscale->trace.fill_counter == 0)
+ {
+ xscale->trace.fill_counter = xscale->trace.buffer_fill;
+ xscale_free_trace_data(xscale);
+ }
+ }
+ else /* wrap mode; free previous buffer */
+ xscale_free_trace_data(xscale);
+
xscale_send_u32(target, 0x62);
xscale_send_u32(target, 0x31);
}
/* send resume request (command 0x30 or 0x31)
* clean the trace buffer if it is to be enabled (0x62) */
- if (xscale->trace.buffer_enabled)
+ if (xscale->trace.mode != XSCALE_TRACE_DISABLED)
{
if ((retval = xscale_send_u32(target, 0x62)) != ERROR_OK)
return retval;
if ((retval = arm_simulate_step(target, NULL)) != ERROR_OK)
return retval;
current_pc = buf_get_u32(armv4_5->pc->value, 0, 32);
+ LOG_DEBUG("current pc %" PRIx32, current_pc);
target->debug_reason = DBG_REASON_SINGLESTEP;
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
}
retval = xscale_step_inner(target, current, address, handle_breakpoints);
+ if (retval != ERROR_OK)
+ return retval;
if (breakpoint)
{
breakpoint = breakpoint->next;
}
+ xscale->trace.mode = XSCALE_TRACE_DISABLED;
+ xscale_free_trace_data(xscale);
+
register_cache_invalidate(xscale->armv4_5_common.core_cache);
/* FIXME mark hardware watchpoints got unset too. Also,
}
static int xscale_write_memory(struct target *target, uint32_t address,
- uint32_t size, uint32_t count, uint8_t *buffer)
+ uint32_t size, uint32_t count, const uint8_t *buffer)
{
struct xscale_common *xscale = target_to_xscale(target);
int retval;
if ((retval = xscale_send_u32(target, 0x60)) != ERROR_OK)
return retval;
+ LOG_ERROR("data abort writing memory");
return ERROR_TARGET_DATA_ABORT;
}
}
static int xscale_write_phys_memory(struct target *target, uint32_t address,
- uint32_t size, uint32_t count, uint8_t *buffer)
+ uint32_t size, uint32_t count, const uint8_t *buffer)
{
struct xscale_common *xscale = target_to_xscale(target);
/* with MMU inactive, there are only physical addresses */
if (!xscale->armv4_5_mmu.mmu_enabled)
- return xscale_read_memory(target, address, size, count, buffer);
+ return xscale_write_memory(target, address, size, count, buffer);
/** \todo: provide a non-stub implementation of this routine. */
LOG_ERROR("%s: %s is not implemented. Disable MMU?",
}
static int xscale_bulk_write_memory(struct target *target, uint32_t address,
- uint32_t count, uint8_t *buffer)
+ uint32_t count, const uint8_t *buffer)
{
return xscale_write_memory(target, address, 4, count, buffer);
}
breakpoint->set = 2; /* breakpoint set on second breakpoint register */
}
else
- {
+ { /* bug: availability previously verified in xscale_add_breakpoint() */
LOG_ERROR("BUG: no hardware comparator available");
- return ERROR_OK;
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
}
else if (breakpoint->type == BKPT_SOFT)
return retval;
}
/* write the bkpt instruction in target endianness (arm7_9->arm_bkpt is host endian) */
- if ((retval = target_write_u32(target, breakpoint->address, xscale->thumb_bkpt)) != ERROR_OK)
+ if ((retval = target_write_u16(target, breakpoint->address, xscale->thumb_bkpt)) != ERROR_OK)
{
return retval;
}
if ((breakpoint->type == BKPT_HARD) && (xscale->ibcr_available < 1))
{
- LOG_INFO("no breakpoint unit available for hardware breakpoint");
+ LOG_ERROR("no breakpoint unit available for hardware breakpoint");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
if ((breakpoint->length != 2) && (breakpoint->length != 4))
{
- LOG_INFO("only breakpoints of two (Thumb) or four (ARM) bytes length supported");
+ LOG_ERROR("only breakpoints of two (Thumb) or four (ARM) bytes length supported");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
xscale->ibcr_available--;
}
- return ERROR_OK;
+ return xscale_set_breakpoint(target, breakpoint);
}
static int xscale_unset_breakpoint(struct target *target,
if (target->state != TARGET_HALTED)
{
- LOG_WARNING("target not halted");
+ LOG_ERROR("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (target->state != TARGET_HALTED)
{
- LOG_WARNING("target not halted");
+ LOG_ERROR("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (xscale->dbr_available < 1)
{
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ LOG_ERROR("no more watchpoint registers available");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
if (watchpoint->value)
/* watchpoints across multiple words require both DBR registers */
if (xscale->dbr_available < 2)
+ {
+ LOG_ERROR("insufficient watchpoint registers available");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+ if (watchpoint->length > watchpoint->address)
+ {
+ LOG_ERROR("xscale does not support watchpoints with length "
+ "greater than address");
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+ }
+
xscale->dbr_available = 0;
return ERROR_OK;
}
if (target->state != TARGET_HALTED)
{
- LOG_WARNING("target not halted");
+ LOG_ERROR("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
pc - xscale->trace.image->sections[section].base_address,
4, buf, &size_read)) != ERROR_OK)
{
- LOG_ERROR("error while reading instruction: %i", retval);
+ LOG_ERROR("error while reading instruction");
return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
}
opcode = target_buffer_get_u32(target, buf);
pc - xscale->trace.image->sections[section].base_address,
2, buf, &size_read)) != ERROR_OK)
{
- LOG_ERROR("error while reading instruction: %i", retval);
+ LOG_ERROR("error while reading instruction");
return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
}
opcode = target_buffer_get_u16(target, buf);
xscale->vector_catch = 0x1;
- xscale->trace.capture_status = TRACE_IDLE;
xscale->trace.data = NULL;
xscale->trace.image = NULL;
- xscale->trace.buffer_enabled = 0;
+ xscale->trace.mode = XSCALE_TRACE_DISABLED;
xscale->trace.buffer_fill = 0;
+ xscale->trace.fill_counter = 0;
/* prepare ARMv4/5 specific information */
armv4_5->arch_info = xscale;
return ERROR_OK;
}
- if ((CMD_ARGC >= 1) && (strcmp("enable", CMD_ARGV[0]) == 0))
- {
- struct xscale_trace_data *td, *next_td;
- xscale->trace.buffer_enabled = 1;
-
- /* free old trace data */
- td = xscale->trace.data;
- while (td)
- {
- next_td = td->next;
-
- if (td->entries)
- free(td->entries);
- free(td);
- td = next_td;
- }
- xscale->trace.data = NULL;
- }
- else if ((CMD_ARGC >= 1) && (strcmp("disable", CMD_ARGV[0]) == 0))
+ if (CMD_ARGC >= 1)
{
- xscale->trace.buffer_enabled = 0;
+ if (strcmp("enable", CMD_ARGV[0]) == 0)
+ xscale->trace.mode = XSCALE_TRACE_WRAP; /* default */
+ else if (strcmp("disable", CMD_ARGV[0]) == 0)
+ xscale->trace.mode = XSCALE_TRACE_DISABLED;
+ else
+ return ERROR_INVALID_ARGUMENTS;
}
- if ((CMD_ARGC >= 2) && (strcmp("fill", CMD_ARGV[1]) == 0))
+ if (CMD_ARGC >= 2 && xscale->trace.mode != XSCALE_TRACE_DISABLED)
{
- uint32_t fill = 1;
- if (CMD_ARGC >= 3)
- COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], fill);
- xscale->trace.buffer_fill = fill;
+ if (strcmp("fill", CMD_ARGV[1]) == 0)
+ {
+ int buffcount = 1; /* default */
+ if (CMD_ARGC >= 3)
+ COMMAND_PARSE_NUMBER(int, CMD_ARGV[2], buffcount);
+ if (buffcount < 1) /* invalid */
+ {
+ command_print(CMD_CTX, "fill buffer count must be > 0");
+ xscale->trace.mode = XSCALE_TRACE_DISABLED;
+ return ERROR_INVALID_ARGUMENTS;
+ }
+ xscale->trace.buffer_fill = buffcount;
+ xscale->trace.mode = XSCALE_TRACE_FILL;
+ }
+ else if (strcmp("wrap", CMD_ARGV[1]) == 0)
+ xscale->trace.mode = XSCALE_TRACE_WRAP;
+ else
+ {
+ xscale->trace.mode = XSCALE_TRACE_DISABLED;
+ return ERROR_INVALID_ARGUMENTS;
+ }
}
- else if ((CMD_ARGC >= 2) && (strcmp("wrap", CMD_ARGV[1]) == 0))
+
+ if (xscale->trace.mode != XSCALE_TRACE_DISABLED)
{
- xscale->trace.buffer_fill = -1;
+ char fill_string[12];
+ sprintf(fill_string, "fill %" PRId32, xscale->trace.buffer_fill);
+ command_print(CMD_CTX, "trace buffer enabled (%s)",
+ (xscale->trace.mode == XSCALE_TRACE_FILL)
+ ? fill_string : "wrap");
}
-
- command_print(CMD_CTX, "trace buffer %s (%s)",
- (xscale->trace.buffer_enabled) ? "enabled" : "disabled",
- (xscale->trace.buffer_fill > 0) ? "fill" : "wrap");
-
+ else
+ command_print(CMD_CTX, "trace buffer disabled");
+
dcsr_value = buf_get_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 0, 32);
- if (xscale->trace.buffer_fill >= 0)
+ if (xscale->trace.mode == XSCALE_TRACE_FILL)
xscale_write_dcsr_sw(target, (dcsr_value & 0xfffffffc) | 2);
else
xscale_write_dcsr_sw(target, dcsr_value & 0xfffffffc);
.mode = COMMAND_EXEC,
.help = "display trace buffer status, enable or disable "
"tracing, and optionally reconfigure trace mode",
- .usage = "['enable'|'disable' ['fill' number|'wrap']]",
+ .usage = "['enable'|'disable' ['fill' [number]|'wrap']]",
},
{
.name = "dump_trace",
projects / fw / openocd / blobdiff