* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "register.h"
#include "arm_opcodes.h"
-
/*
* For information about ARM7TDMI, see ARM DDI 0210C (r4p1)
* or ARM DDI 0029G (r3). "Debug In Depth", Appendix B,
/* only check the debug reason if we don't know it already */
if ((target->debug_reason != DBG_REASON_DBGRQ)
- && (target->debug_reason != DBG_REASON_SINGLESTEP))
- {
+ && (target->debug_reason != DBG_REASON_SINGLESTEP)) {
struct scan_field fields[2];
uint8_t databus[4];
uint8_t breakpoint;
fields[1].out_value = NULL;
fields[1].in_value = databus;
- if ((retval = arm_jtag_scann(&arm7_9->jtag_info, 0x1, TAP_DRPAUSE)) != ERROR_OK)
- {
+ retval = arm_jtag_scann(&arm7_9->jtag_info, 0x1, TAP_DRPAUSE);
+ if (retval != ERROR_OK)
return retval;
- }
retval = arm_jtag_set_instr(&arm7_9->jtag_info, arm7_9->jtag_info.intest_instr, NULL, TAP_DRPAUSE);
if (retval != ERROR_OK)
return retval;
jtag_add_dr_scan(arm7_9->jtag_info.tap, 2, fields, TAP_DRPAUSE);
- if ((retval = jtag_execute_queue()) != ERROR_OK)
- {
+ retval = jtag_execute_queue();
+ if (retval != ERROR_OK)
return retval;
- }
fields[0].in_value = NULL;
fields[0].out_value = &breakpoint;
static const int arm7tdmi_num_bits[] = {1, 32};
-static __inline int arm7tdmi_clock_out_inner(struct arm_jtag *jtag_info, uint32_t out, int breakpoint)
+static inline int arm7tdmi_clock_out_inner(struct arm_jtag *jtag_info, uint32_t out, int breakpoint)
{
- uint32_t values[2]={breakpoint, flip_u32(out, 32)};
+ uint32_t values[2] = {breakpoint, flip_u32(out, 32)};
jtag_add_dr_out(jtag_info->tap,
2,
*
* FIXME remove the unused "deprecated" parameter
*/
-static __inline int arm7tdmi_clock_out(struct arm_jtag *jtag_info,
+static inline int arm7tdmi_clock_out(struct arm_jtag *jtag_info,
uint32_t out, uint32_t *deprecated, int breakpoint)
{
int retval;
int retval = ERROR_OK;
struct scan_field fields[2];
- if ((retval = arm_jtag_scann(jtag_info, 0x1, TAP_DRPAUSE)) != ERROR_OK)
- {
+ retval = arm_jtag_scann(jtag_info, 0x1, TAP_DRPAUSE);
+ if (retval != ERROR_OK)
return retval;
- }
retval = arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL, TAP_DRPAUSE);
if (retval != ERROR_OK)
return retval;
jtag_add_runtest(0, TAP_DRPAUSE);
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
- if ((retval = jtag_execute_queue()) != ERROR_OK)
+ retval = jtag_execute_queue();
+ if (retval != ERROR_OK)
return retval;
if (in)
return ERROR_OK;
}
-void arm_endianness(uint8_t *tmp, void *in, int size, int be, int flip)
-{
- uint32_t readback = le_to_h_u32(tmp);
- if (flip)
- readback = flip_u32(readback, 32);
- switch (size)
- {
- case 4:
- if (be)
- {
- h_u32_to_be(((uint8_t*)in), readback);
- } else
- {
- h_u32_to_le(((uint8_t*)in), readback);
- }
- break;
- case 2:
- if (be)
- {
- h_u16_to_be(((uint8_t*)in), readback & 0xffff);
- } else
- {
- h_u16_to_le(((uint8_t*)in), readback & 0xffff);
- }
- break;
- case 1:
- *((uint8_t *)in)= readback & 0xff;
- break;
- }
-}
-
-static int arm7endianness(jtag_callback_data_t arg,
- jtag_callback_data_t size, jtag_callback_data_t be,
- jtag_callback_data_t captured)
-{
- uint8_t *in = (uint8_t *)arg;
-
- arm_endianness((uint8_t *)captured, in, (int)size, (int)be, 1);
- return ERROR_OK;
-}
-
/* clock the target, and read the databus
* the *in pointer points to a buffer where elements of 'size' bytes
* are stored in big (be == 1) or little (be == 0) endianness
void *in, int size, int be)
{
int retval = ERROR_OK;
- struct scan_field fields[2];
+ struct scan_field fields[3];
- if ((retval = arm_jtag_scann(jtag_info, 0x1, TAP_DRPAUSE)) != ERROR_OK)
- {
+ retval = arm_jtag_scann(jtag_info, 0x1, TAP_DRPAUSE);
+ if (retval != ERROR_OK)
return retval;
- }
retval = arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL, TAP_DRPAUSE);
if (retval != ERROR_OK)
return retval;
fields[0].out_value = NULL;
fields[0].in_value = NULL;
- fields[1].num_bits = 32;
- fields[1].out_value = NULL;
- fields[1].in_value = in;
+ if (size == 4) {
+ fields[1].num_bits = 32;
+ fields[1].out_value = NULL;
+ fields[1].in_value = in;
+ } else {
+ /* Discard irrelevant bits of the scan, making sure we don't write more
+ * than size bytes to in */
+ fields[1].num_bits = 32 - size * 8;
+ fields[1].out_value = NULL;
+ fields[1].in_value = NULL;
- jtag_add_dr_scan(jtag_info->tap, 2, fields, TAP_DRPAUSE);
+ fields[2].num_bits = size * 8;
+ fields[2].out_value = NULL;
+ fields[2].in_value = in;
+ }
+
+ jtag_add_dr_scan(jtag_info->tap, size == 4 ? 2 : 3, fields, TAP_DRPAUSE);
- jtag_add_callback4(arm7endianness,
+ jtag_add_callback4(arm7_9_endianness_callback,
(jtag_callback_data_t)in,
(jtag_callback_data_t)size,
(jtag_callback_data_t)be,
- (jtag_callback_data_t)in);
+ (jtag_callback_data_t)1);
jtag_add_runtest(0, TAP_DRPAUSE);
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
{
- if ((retval = jtag_execute_queue()) != ERROR_OK)
- {
+ retval = jtag_execute_queue();
+ if (retval != ERROR_OK)
return retval;
- }
if (in)
- {
- LOG_DEBUG("in: 0x%8.8x", *(uint32_t*)in);
- }
+ LOG_DEBUG("in: 0x%8.8x", *(uint32_t *)in);
else
- {
LOG_ERROR("BUG: called with in == NULL");
- }
}
#endif
*pc -= 0xa;
}
-
/* FIX!!! is this a potential performance bottleneck w.r.t. requiring too many
* roundtrips when jtag_execute_queue() has a large overhead(e.g. for USB)s?
*
* and convert data afterwards.
*/
static void arm7tdmi_read_core_regs(struct target *target,
- uint32_t mask, uint32_t* core_regs[16])
+ uint32_t mask, uint32_t *core_regs[16])
{
int i;
struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
/* fetch NOP, STM in EXECUTE stage (1st cycle) */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
- for (i = 0; i <= 15; i++)
- {
+ for (i = 0; i <= 15; i++) {
if (mask & (1 << i))
/* nothing fetched, STM still in EXECUTE (1 + i cycle) */
arm7tdmi_clock_data_in(jtag_info, core_regs[i]);
}
static void arm7tdmi_read_core_regs_target_buffer(struct target *target,
- uint32_t mask, void* buffer, int size)
+ uint32_t mask, void *buffer, int size)
{
int i;
struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
/* fetch NOP, STM in EXECUTE stage (1st cycle) */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
- for (i = 0; i <= 15; i++)
- {
+ for (i = 0; i <= 15; i++) {
/* nothing fetched, STM still in EXECUTE (1 + i cycle), read databus */
- if (mask & (1 << i))
- {
- switch (size)
- {
+ if (mask & (1 << i)) {
+ switch (size) {
case 4:
arm7tdmi_clock_data_in_endianness(jtag_info, buf_u32++, 4, be);
break;
/* fetch NOP, LDM in EXECUTE stage (1st cycle) */
arm7tdmi_clock_out_inner(jtag_info, ARMV4_5_NOP, 0);
- for (i = 0; i <= 15; i++)
- {
+ for (i = 0; i <= 15; i++) {
if (mask & (1 << i))
/* nothing fetched, LDM still in EXECUTE (1 + i cycle) */
arm7tdmi_clock_out_inner(jtag_info, core_regs[i], 0);
{
struct arm7_9_common *arm7_9;
- arm7_9 = calloc(1,sizeof(struct arm7_9_common));
+ arm7_9 = calloc(1, sizeof(struct arm7_9_common));
arm7tdmi_init_arch_info(target, arm7_9, target->tap);
arm7_9->arm.is_armv4 = true;
}
/** Holds methods for ARM7TDMI targets. */
-struct target_type arm7tdmi_target =
-{
+struct target_type arm7tdmi_target = {
.name = "arm7tdmi",
.poll = arm7_9_poll,
projects / openocd / blobdiff