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- fixed endianness helper macros (thanks to obilix and wiml for finding and fixing this bug) 

- added declarations for 32bit fileio access functions (network byte order)
- fixed bug in etm trace dump file handling
- added XScale trace buffer decoding
- fixed arm_simulator ERROR numbers (-7xx used twice)
- fixed minor bug in debug output in stellaris.c


git-svn-id: svn://svn.berlios.de/openocd/trunk@178 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
drath 2007-06-28 10:32:58 +00:00
parent 8c290412d2
commit 32c6d70f6a
8 changed files with 549 additions and 139 deletions
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2
src/flash/stellaris.c
View File

@ -148,7 +148,7 @@ int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, c
stellaris_info->target = get_target_by_num(strtoul(args[5], NULL, 0));
if (!stellaris_info->target)
{
ERROR("no target '%i' configured", args[5]);
ERROR("no target '%s' configured", args[5]);
exit(-1);
}

2
src/helper/fileio.h
View File

@ -82,6 +82,8 @@ extern int fileio_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read);
extern int fileio_seek(fileio_t *fileio, u32 position);
extern int fileio_close(fileio_t *fileio);
extern int fileio_open(fileio_t *fileio, char *url, enum fileio_access access, enum fileio_type type);
extern int fileio_read_u32(fileio_t *fileio, u32 *data);
extern int fileio_write_u32(fileio_t *fileio, u32 data);
#define ERROR_FILEIO_LOCATION_UNKNOWN (-1200)
#define ERROR_FILEIO_NOT_FOUND (-1201)

28
src/helper/types.h
View File

@ -40,23 +40,23 @@ typedef unsigned long long u64;
#ifdef WORDS_BIGENDIAN /* big endian host */
#define le_to_h_u32(x) (u32)(x[0] | x[1] << 8 | x[2] << 16 | x[3] << 24)
#define le_to_h_u16(x) (u16)(x[0] | x[1] << 8)
#define le_to_h_u32(x) (u32)((x)[0] | (x)[1] << 8 | (x)[2] << 16 | (x)[3] << 24)
#define le_to_h_u16(x) (u16)((x)[0] | (x)[1] << 8)
#define be_to_h_u32(x) (*(u32*)(x))
#define be_to_h_u16(x) (*(u16*)(x))
#define h_u32_to_le(buf, val) \
do { \
buf[3] = (val & 0xff000000) >> 24; \
buf[2] = (val & 0x00ff0000) >> 16; \
buf[1] = (val & 0x0000ff00) >> 8; \
buf[0] = (val & 0x000000ff); \
(buf)[3] = ((val) & 0xff000000) >> 24; \
(buf)[2] = ((val) & 0x00ff0000) >> 16; \
(buf)[1] = ((val) & 0x0000ff00) >> 8; \
(buf)[0] = ((val) & 0x000000ff); \
} while (0)
#define h_u16_to_le(buf, val) \
do { \
buf[0] = (val & 0xff000) >> 8; \
buf[1] = (val & 0x00ff); \
(buf)[0] = ((val) & 0xff000) >> 8; \
(buf)[1] = ((val) & 0x00ff); \
} while (0)
#define h_u32_to_be(buf, val) do { *(u32*)(buf) = (val); } while (0)
@ -73,16 +73,16 @@ typedef unsigned long long u64;
#define h_u32_to_be(buf, val) \
do { \
buf[0] = (val & 0xff000000) >> 24; \
buf[1] = (val & 0x00ff0000) >> 16; \
buf[2] = (val & 0x0000ff00) >> 8; \
buf[3] = (val & 0x000000ff); \
(buf)[0] = ((val) & 0xff000000) >> 24; \
(buf)[1] = ((val) & 0x00ff0000) >> 16; \
(buf)[2] = ((val) & 0x0000ff00) >> 8; \
(buf)[3] = ((val) & 0x000000ff); \
} while (0)
#define h_u16_to_be(buf, val) \
do { \
buf[0] = (val & 0xff000) >> 8; \
buf[1] = (val & 0x00ff); \
(buf)[0] = ((val) & 0xff000) >> 8; \
(buf)[1] = ((val) & 0x00ff); \
} while (0)
#endif

2
src/openocd.c
View File

@ -18,7 +18,7 @@
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#define OPENOCD_VERSION "Open On-Chip Debugger (2007-06-15 16:00 CEST)"
#define OPENOCD_VERSION "Open On-Chip Debugger (2007-06-28 12:30 CEST)"
#ifdef HAVE_CONFIG_H
#include "config.h"

2
src/target/arm_simulator.h
View File

@ -26,6 +26,6 @@
extern int arm_simulate_step(target_t *target, u32 *dry_run_pc);
#define ERROR_ARM_SIMULATOR_NOT_IMPLEMENTED (-1000)
#define ERROR_ARM_SIMULATOR_NOT_IMPLEMENTED (-700)
#endif /* ARM_SIMULATOR_H */

10
src/target/etm.c
View File

@ -1502,9 +1502,13 @@ int handle_etm_load_command(struct command_context_s *cmd_ctx, char *cmd, char *
for (i = 0; i < etm_ctx->trace_depth; i++)
{
fileio_read_u32(&file, &etm_ctx->trace_data[i].pipestat);
fileio_read_u32(&file, &etm_ctx->trace_data[i].packet);
fileio_read_u32(&file, &etm_ctx->trace_data[i].flags);
u32 pipestat, packet, flags;
fileio_read_u32(&file, &pipestat);
fileio_read_u32(&file, &packet);
fileio_read_u32(&file, &flags);
etm_ctx->trace_data[i].pipestat = pipestat & 0xff;
etm_ctx->trace_data[i].packet = packet & 0xffff;
etm_ctx->trace_data[i].flags = flags;
}
fileio_close(&file);

595
src/target/xscale.c
View File

@ -29,6 +29,7 @@
#include "target.h"
#include "armv4_5.h"
#include "arm_simulator.h"
#include "arm_disassembler.h"
#include "log.h"
#include "jtag.h"
#include "binarybuffer.h"
@ -995,21 +996,29 @@ enum target_state xscale_poll(target_t *target)
{
if ((retval = xscale_read_tx(target, 0)) == ERROR_OK)
{
enum target_state previous_state = target->state;
/* there's data to read from the tx register, we entered debug state */
xscale->handler_running = 1;
target->state = TARGET_HALTED;
/* process debug entry, fetching current mode regs */
if ((retval = xscale_debug_entry(target)) != ERROR_OK)
return retval;
/* debug_entry could have overwritten target state (i.e. immediate resume)
* don't signal event handlers in that case
*/
if (target->state != TARGET_HALTED)
return target->state;
/* if target was running, signal that we halted
* otherwise we reentered from debug execution */
if (target->state == TARGET_RUNNING)
if (previous_state == TARGET_RUNNING)
target_call_event_callbacks(target, TARGET_EVENT_HALTED);
else
target_call_event_callbacks(target, TARGET_EVENT_DEBUG_HALTED);
target->state = TARGET_HALTED;
}
else if (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
{
@ -1174,6 +1183,24 @@ int xscale_debug_entry(target_t *target)
xscale->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = (xscale->cp15_control_reg & 0x4U) ? 1 : 0;
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)
{
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))
{
xscale_resume(target, 1, 0x0, 1, 0);
}
else
{
xscale->trace.buffer_enabled = 0;
}
}
return ERROR_OK;
}
@ -1315,7 +1342,7 @@ int xscale_resume(struct target_s *target, int current, u32 address, int handle_
/* 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.buffer_enabled)
{
xscale_send_u32(target, 0x62);
xscale_send_u32(target, 0x31);
@ -1358,7 +1385,7 @@ int xscale_resume(struct target_s *target, int current, u32 address, int handle_
/* 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.buffer_enabled)
{
xscale_send_u32(target, 0x62);
xscale_send_u32(target, 0x31);
@ -1462,7 +1489,7 @@ int xscale_step(struct target_s *target, int current, u32 address, int handle_br
/* 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.buffer_enabled)
{
xscale_send_u32(target, 0x62);
xscale_send_u32(target, 0x31);
@ -2537,6 +2564,355 @@ int xscale_write_dcsr_sw(target_t *target, u32 value)
return ERROR_OK;
}
int xscale_read_trace(target_t *target)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
xscale_trace_data_t **trace_data_p;
/* 258 words from debug handler
* 256 trace buffer entries
* 2 checkpoint addresses
*/
u32 trace_buffer[258];
int is_address[256];
int i, j;
if (target->state != TARGET_HALTED)
{
WARNING("target must be stopped to read trace data");
return ERROR_TARGET_NOT_HALTED;
}
/* send read trace buffer command (command 0x61) */
xscale_send_u32(target, 0x61);
/* receive trace buffer content */
xscale_receive(target, trace_buffer, 258);
/* parse buffer backwards to identify address entries */
for (i = 255; i >= 0; i--)
{
is_address[i] = 0;
if (((trace_buffer[i] & 0xf0) == 0x90) ||
((trace_buffer[i] & 0xf0) == 0xd0))
{
if (i >= 3)
is_address[--i] = 1;
if (i >= 2)
is_address[--i] = 1;
if (i >= 1)
is_address[--i] = 1;
if (i >= 0)
is_address[--i] = 1;
}
}
/* search first non-zero entry */
for (j = 0; (j < 256) && (trace_buffer[j] == 0) && (!is_address[j]); j++)
;
if (j == 256)
{
DEBUG("no trace data collected");
return ERROR_XSCALE_NO_TRACE_DATA;
}
for (trace_data_p = &xscale->trace.data; *trace_data_p; trace_data_p = &(*trace_data_p)->next)
;
*trace_data_p = malloc(sizeof(xscale_trace_data_t));
(*trace_data_p)->next = NULL;
(*trace_data_p)->chkpt0 = trace_buffer[256];
(*trace_data_p)->chkpt1 = trace_buffer[257];
(*trace_data_p)->last_instruction = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32);
(*trace_data_p)->entries = malloc(sizeof(xscale_trace_entry_t) * (256 - j));
(*trace_data_p)->depth = 256 - j;
for (i = j; i < 256; i++)
{
(*trace_data_p)->entries[i - j].data = trace_buffer[i];
if (is_address[i])
(*trace_data_p)->entries[i - j].type = XSCALE_TRACE_ADDRESS;
else
(*trace_data_p)->entries[i - j].type = XSCALE_TRACE_MESSAGE;
}
return ERROR_OK;
}
int xscale_read_instruction(target_t *target, arm_instruction_t *instruction)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
int i;
int section = -1;
u32 size_read;
u32 opcode;
int retval;
if (!xscale->trace.image)
return ERROR_TRACE_IMAGE_UNAVAILABLE;
/* search for the section the current instruction belongs to */
for (i = 0; i < xscale->trace.image->num_sections; i++)
{
if ((xscale->trace.image->sections[i].base_address <= xscale->trace.current_pc) &&
(xscale->trace.image->sections[i].base_address + xscale->trace.image->sections[i].size > xscale->trace.current_pc))
{
section = i;
break;
}
}
if (section == -1)
{
/* current instruction couldn't be found in the image */
return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
}
if (xscale->trace.core_state == ARMV4_5_STATE_ARM)
{
u8 buf[4];
if ((retval = image_read_section(xscale->trace.image, section,
xscale->trace.current_pc - xscale->trace.image->sections[section].base_address,
4, buf, &size_read)) != ERROR_OK)
{
ERROR("error while reading instruction: %i", retval);
return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
}
opcode = target_buffer_get_u32(target, buf);
arm_evaluate_opcode(opcode, xscale->trace.current_pc, instruction);
}
else if (xscale->trace.core_state == ARMV4_5_STATE_THUMB)
{
u8 buf[2];
if ((retval = image_read_section(xscale->trace.image, section,
xscale->trace.current_pc - xscale->trace.image->sections[section].base_address,
2, buf, &size_read)) != ERROR_OK)
{
ERROR("error while reading instruction: %i", retval);
return ERROR_TRACE_INSTRUCTION_UNAVAILABLE;
}
opcode = target_buffer_get_u16(target, buf);
thumb_evaluate_opcode(opcode, xscale->trace.current_pc, instruction);
}
else
{
ERROR("BUG: unknown core state encountered");
exit(-1);
}
return ERROR_OK;
}
int xscale_branch_address(xscale_trace_data_t *trace_data, int i, u32 *target)
{
/* if there are less than four entries prior to the indirect branch message
* we can't extract the address */
if (i < 4)
{
return -1;
}
*target = (trace_data->entries[i-1].data) | (trace_data->entries[i-2].data << 8) |
(trace_data->entries[i-3].data << 16) | (trace_data->entries[i-4].data << 24);
return 0;
}
int xscale_analyze_trace(target_t *target, command_context_t *cmd_ctx)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
xscale_common_t *xscale = armv4_5->arch_info;
int next_pc_ok = 0;
u32 next_pc = 0x0;
xscale_trace_data_t *trace_data = xscale->trace.data;
int retval;
while (trace_data)
{
int i, chkpt;
int rollover;
int branch;
int exception;
xscale->trace.core_state = ARMV4_5_STATE_ARM;
chkpt = 0;
rollover = 0;
for (i = 0; i < trace_data->depth; i++)
{
next_pc_ok = 0;
branch = 0;
exception = 0;
if (trace_data->entries[i].type == XSCALE_TRACE_ADDRESS)
continue;
switch ((trace_data->entries[i].data & 0xf0) >> 4)
{
case 0: /* Exceptions */
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
exception = (trace_data->entries[i].data & 0x70) >> 4;
next_pc_ok = 1;
next_pc = (trace_data->entries[i].data & 0xf0) >> 2;
command_print(cmd_ctx, "--- exception %i ---", (trace_data->entries[i].data & 0xf0) >> 4);
break;
case 8: /* Direct Branch */
branch = 1;
break;
case 9: /* Indirect Branch */
branch = 1;
if (xscale_branch_address(trace_data, i, &next_pc) == 0)
{
next_pc_ok = 1;
}
break;
case 13: /* Checkpointed Indirect Branch */
if (xscale_branch_address(trace_data, i, &next_pc) == 0)
{
next_pc_ok = 1;
if (((chkpt == 0) && (next_pc != trace_data->chkpt0))
|| ((chkpt == 1) && (next_pc != trace_data->chkpt1)))
WARNING("checkpointed indirect branch target address doesn't match checkpoint");
}
/* explicit fall-through */
case 12: /* Checkpointed Direct Branch */
branch = 1;
if (chkpt == 0)
{
next_pc_ok = 1;
next_pc = trace_data->chkpt0;
chkpt++;
}
else if (chkpt == 1)
{
next_pc_ok = 1;
next_pc = trace_data->chkpt0;
chkpt++;
}
else
{
WARNING("more than two checkpointed branches encountered");
}
break;
case 15: /* Roll-over */
rollover++;
continue;
default: /* Reserved */
command_print(cmd_ctx, "--- reserved trace message ---");
ERROR("BUG: trace message %i is reserved", (trace_data->entries[i].data & 0xf0) >> 4);
return ERROR_OK;
}
if (xscale->trace.pc_ok)
{
int executed = (trace_data->entries[i].data & 0xf) + rollover * 16;
arm_instruction_t instruction;
if ((exception == 6) || (exception == 7))
{
/* IRQ or FIQ exception, no instruction executed */
executed -= 1;
}
while (executed-- >= 0)
{
if ((retval = xscale_read_instruction(target, &instruction)) != ERROR_OK)
{
/* can't continue tracing with no image available */
if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
{
return retval;
}
else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE)
{
/* TODO: handle incomplete images */
}
}
/* a precise abort on a load to the PC is included in the incremental
* word count, other instructions causing data aborts are not included
*/
if ((executed == 0) && (exception == 4)
&& ((instruction.type >= ARM_LDR) && (instruction.type <= ARM_LDM)))
{
if ((instruction.type == ARM_LDM)
&& ((instruction.info.load_store_multiple.register_list & 0x8000) == 0))
{
executed--;
}
else if (((instruction.type >= ARM_LDR) && (instruction.type <= ARM_LDRSH))
&& (instruction.info.load_store.Rd != 15))
{
executed--;
}
}
/* only the last instruction executed
* (the one that caused the control flow change)
* could be a taken branch
*/
if (((executed == -1) && (branch == 1)) &&
(((instruction.type == ARM_B) ||
(instruction.type == ARM_BL) ||
(instruction.type == ARM_BLX)) &&
(instruction.info.b_bl_bx_blx.target_address != -1)))
{
xscale->trace.current_pc = instruction.info.b_bl_bx_blx.target_address;
}
else
{
xscale->trace.current_pc += (xscale->trace.core_state == ARMV4_5_STATE_ARM) ? 4 : 2;
}
command_print(cmd_ctx, "%s", instruction.text);
}
rollover = 0;
}
if (next_pc_ok)
{
xscale->trace.current_pc = next_pc;
xscale->trace.pc_ok = 1;
}
}
for (; xscale->trace.current_pc < trace_data->last_instruction; xscale->trace.current_pc += (xscale->trace.core_state == ARMV4_5_STATE_ARM) ? 4 : 2)
{
arm_instruction_t instruction;
if ((retval = xscale_read_instruction(target, &instruction)) != ERROR_OK)
{
/* can't continue tracing with no image available */
if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE)
{
return retval;
}
else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE)
{
/* TODO: handle incomplete images */
}
}
command_print(cmd_ctx, "%s", instruction.text);
}
trace_data = trace_data->next;
}
return ERROR_OK;
}
void xscale_build_reg_cache(target_t *target)
{
/* get pointers to arch-specific information */
@ -2592,7 +2968,9 @@ int xscale_init_target(struct command_context_s *cmd_ctx, struct target_s *targe
/* assert TRST once during startup */
jtag_add_reset(1, 0);
jtag_add_sleep(5000);
jtag_add_reset(0, 0);
jtag_execute_queue();
return ERROR_OK;
}
@ -2688,8 +3066,11 @@ int xscale_init_arch_info(target_t *target, xscale_common_t *xscale, int chain_p
xscale->vector_catch = 0x1;
xscale->trace_buffer_enabled = 0;
xscale->trace_buffer_fill = 0;
xscale->trace.capture_status = TRACE_IDLE;
xscale->trace.data = NULL;
xscale->trace.image = NULL;
xscale->trace.buffer_enabled = 0;
xscale->trace.buffer_fill = 0;
/* prepare ARMv4/5 specific information */
armv4_5->arch_info = xscale;
@ -3022,28 +3403,45 @@ int xscale_handle_trace_buffer_command(struct command_context_s *cmd_ctx, char *
if ((argc >= 1) && (strcmp("enable", args[0]) == 0))
{
xscale->trace_buffer_enabled = 1;
xscale_trace_data_t *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 ((argc >= 1) && (strcmp("disable", args[0]) == 0))
{
xscale->trace_buffer_enabled = 0;
xscale->trace.buffer_enabled = 0;
}
if ((argc >= 2) && (strcmp("fill", args[1]) == 0))
{
xscale->trace_buffer_fill = 1;
if (argc >= 3)
xscale->trace.buffer_fill = strtoul(args[2], NULL, 0);
else
xscale->trace.buffer_fill = 1;
}
else if ((argc >= 2) && (strcmp("wrap", args[1]) == 0))
{
xscale->trace_buffer_fill = 0;
xscale->trace.buffer_fill = -1;
}
command_print(cmd_ctx, "trace buffer %s (%s)",
(xscale->trace_buffer_enabled) ? "enabled" : "disabled",
(xscale->trace_buffer_fill) ? "fill" : "wrap");
(xscale->trace.buffer_enabled) ? "enabled" : "disabled",
(xscale->trace.buffer_fill > 0) ? "fill" : "wrap");
dcsr_value = buf_get_u32(xscale->reg_cache->reg_list[XSCALE_DCSR].value, 0, 32);
if (xscale->trace_buffer_fill)
if (xscale->trace.buffer_fill >= 0)
xscale_write_dcsr_sw(target, (dcsr_value & 0xfffffffc) | 2);
else
xscale_write_dcsr_sw(target, dcsr_value & 0xfffffffc);
@ -3051,14 +3449,64 @@ int xscale_handle_trace_buffer_command(struct command_context_s *cmd_ctx, char *
return ERROR_OK;
}
int xscale_handle_trace_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target;
armv4_5_common_t *armv4_5;
xscale_common_t *xscale;
if (argc < 1)
{
command_print(cmd_ctx, "usage: xscale trace_image <file> [base address] [type]");
return ERROR_OK;
}
target = get_current_target(cmd_ctx);
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
command_print(cmd_ctx, "target isn't an XScale target");
return ERROR_OK;
}
if (xscale->trace.image)
{
image_close(xscale->trace.image);
free(xscale->trace.image);
command_print(cmd_ctx, "previously loaded image found and closed");
}
xscale->trace.image = malloc(sizeof(image_t));
xscale->trace.image->base_address_set = 0;
xscale->trace.image->start_address_set = 0;
/* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
if (argc >= 2)
{
xscale->trace.image->base_address_set = 1;
xscale->trace.image->base_address = strtoul(args[1], NULL, 0);
}
else
{
xscale->trace.image->base_address_set = 0;
}
if (image_open(xscale->trace.image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
{
command_print(cmd_ctx, "image opening error: %s", xscale->trace.image->error_str);
free(xscale->trace.image);
xscale->trace.image = NULL;
return ERROR_OK;
}
return ERROR_OK;
}
int xscale_handle_dump_trace_buffer_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
xscale_common_t *xscale;
u32 trace_buffer[258];
int is_address[256];
int i;
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
@ -3066,106 +3514,22 @@ int xscale_handle_dump_trace_buffer_command(struct command_context_s *cmd_ctx, c
return ERROR_OK;
}
if (target->state != TARGET_HALTED)
return ERROR_OK;
}
int xscale_handle_analyze_trace_buffer_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv4_5_common_t *armv4_5;
xscale_common_t *xscale;
if (xscale_get_arch_pointers(target, &armv4_5, &xscale) != ERROR_OK)
{
command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
command_print(cmd_ctx, "target isn't an XScale target");
return ERROR_OK;
}
/* send read trace buffer command (command 0x61) */
xscale_send_u32(target, 0x61);
/* receive trace buffer content */
xscale_receive(target, trace_buffer, 258);
for (i = 255; i >= 0; i--)
{
is_address[i] = 0;
if (((trace_buffer[i] & 0xf0) == 0x90) ||
((trace_buffer[i] & 0xf0) == 0xd0))
{
if (i >= 4)
is_address[--i] = 1;
if (i >= 3)
is_address[--i] = 1;
if (i >= 2)
is_address[--i] = 1;
if (i >= 1)
is_address[--i] = 1;
}
}
for (i = 0; i < 256; i++)
{
#if 0
command_print(cmd_ctx, "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x",
trace_buffer[i + 0], trace_buffer[i + 1], trace_buffer[i + 2], trace_buffer[i + 3],
trace_buffer[i + 4], trace_buffer[i + 5], trace_buffer[i + 6], trace_buffer[i + 6]
);
i += 8;
#endif
if (is_address[i])
{
command_print(cmd_ctx, "address: 0x%2.2x%2.2x%2.2x%2.2x", trace_buffer[i], trace_buffer[i+1], trace_buffer[i+2], trace_buffer[i+3]);
i += 3;
}
else
{
switch ((trace_buffer[i] & 0xf0) >> 4)
{
case 0:
command_print(cmd_ctx, "0x%2.2x: reset exception", trace_buffer[i]);
break;
case 1:
command_print(cmd_ctx, "0x%2.2x: undef exception", trace_buffer[i]);
break;
case 2:
command_print(cmd_ctx, "0x%2.2x: swi exception", trace_buffer[i]);
break;
case 3:
command_print(cmd_ctx, "0x%2.2x: pabort exception", trace_buffer[i]);
break;
case 4:
command_print(cmd_ctx, "0x%2.2x: dabort exception", trace_buffer[i]);
break;
case 5:
command_print(cmd_ctx, "0x%2.2x: invalid", trace_buffer[i]);
break;
case 6:
command_print(cmd_ctx, "0x%2.2x: irq exception", trace_buffer[i]);
break;
case 7:
command_print(cmd_ctx, "0x%2.2x: fiq exception", trace_buffer[i]);
break;
case 0x8:
command_print(cmd_ctx, "0x%2.2x: direct branch", trace_buffer[i]);
break;
case 0x9:
command_print(cmd_ctx, "0x%2.2x: indirect branch", trace_buffer[i]);
break;
case 0xa:
command_print(cmd_ctx, "0x%2.2x: invalid", trace_buffer[i]);
break;
case 0xb:
command_print(cmd_ctx, "0x%2.2x: invalid", trace_buffer[i]);
break;
case 0xc:
command_print(cmd_ctx, "0x%2.2x: checkpointed direct branch", trace_buffer[i]);
break;
case 0xd:
command_print(cmd_ctx, "0x%2.2x: checkpointed indirect branch", trace_buffer[i]);
break;
case 0xe:
command_print(cmd_ctx, "0x%2.2x: invalid", trace_buffer[i]);
break;
case 0xf:
command_print(cmd_ctx, "0x%2.2x: rollover", trace_buffer[i]);
break;
}
}
}
command_print(cmd_ctx, "chkpt0: 0x%8.8x, chkpt1: 0x%8.8x", trace_buffer[256], trace_buffer[257]);
xscale_analyze_trace(target, cmd_ctx);
return ERROR_OK;
}
@ -3190,6 +3554,9 @@ int xscale_register_commands(struct command_context_s *cmd_ctx)
register_command(cmd_ctx, xscale_cmd, "trace_buffer", xscale_handle_trace_buffer_command, COMMAND_EXEC, "<enable|disable> ['fill'|'wrap']");
register_command(cmd_ctx, xscale_cmd, "dump_trace_buffer", xscale_handle_dump_trace_buffer_command, COMMAND_EXEC, "dump content of trace buffer");
register_command(cmd_ctx, xscale_cmd, "analyze_trace", xscale_handle_analyze_trace_buffer_command, COMMAND_EXEC, "analyze content of trace buffer");
register_command(cmd_ctx, xscale_cmd, "trace_image", xscale_handle_trace_image_command,
COMMAND_EXEC, "load image from <file> [base address]");
armv4_5_register_commands(cmd_ctx);

41
src/target/xscale.h
View File

@ -24,6 +24,8 @@
#include "register.h"
#include "armv4_5.h"
#include "armv4_5_mmu.h"
#include "trace.h"
#include "image.h"
#define XSCALE_COMMON_MAGIC 0x58534341
@ -47,6 +49,40 @@ enum xscale_debug_reason
XSCALE_DBG_REASON_TB_FULL,
};
enum xscale_trace_entry_type
{
XSCALE_TRACE_MESSAGE,
XSCALE_TRACE_ADDRESS,
};
typedef struct xscale_trace_entry_s
{
u8 data;
enum xscale_trace_entry_type type;
} xscale_trace_entry_t;
typedef struct xscale_trace_data_s
{
xscale_trace_entry_t *entries;
int depth;
u32 chkpt0;
u32 chkpt1;
u32 last_instruction;
struct xscale_trace_data_s *next;
} xscale_trace_data_t;
typedef struct xscale_trace_s
{
trace_status_t capture_status; /* current state of capture run */
image_t *image; /* source for target opcodes */
xscale_trace_data_t *data; /* linked list of collected trace data */
int buffer_enabled; /* whether trace buffer is enabled */
int buffer_fill; /* maximum number of trace runs to read (-1 for wrap-around) */
int pc_ok;
u32 current_pc;
armv4_5_state_t core_state; /* current core state (ARM, Thumb, Jazelle) */
} xscale_trace_t;
typedef struct xscale_common_s
{
int common_magic;
@ -94,8 +130,7 @@ typedef struct xscale_common_s
u8 vector_catch;
int trace_buffer_enabled;
int trace_buffer_fill;
xscale_trace_t trace;
int arch_debug_reason;
@ -142,4 +177,6 @@ enum
XSCALE_TXRXCTRL,
};
#define ERROR_XSCALE_NO_TRACE_DATA (-1500)
#endif /* XSCALE_H */