/* target function declarations */
enum target_state arm7tdmi_poll(struct target_s *target);
int arm7tdmi_halt(target_t *target);
-int arm7tdmi_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
target_type_t arm7tdmi_target =
{
u8 out_buf[4];
u8 breakpoint_buf;
- out = flip_u32(out, 32);
- buf_set_u32(out_buf, 0, 32, out);
+ buf_set_u32(out_buf, 0, 32, flip_u32(out, 32));
buf_set_u32(&breakpoint_buf, 0, 1, breakpoint);
jtag_add_end_state(TAP_PD);
fields[1].num_bits = 32;
fields[1].out_value = out_buf;
fields[1].out_mask = NULL;
+ fields[1].in_value = NULL;
if (in)
{
- fields[1].in_value = (u8*)in;
fields[1].in_handler = arm_jtag_buf_to_u32_flip;
fields[1].in_handler_priv = in;
- } else
+ }
+ else
{
- fields[1].in_value = NULL;
fields[1].in_handler = NULL;
fields[1].in_handler_priv = NULL;
}
-
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
{
- char* in_string;
jtag_execute_queue();
if (in)
{
- in_string = buf_to_char((u8*)in, 32);
- DEBUG("out: 0x%8.8x, in: %s", flip_u32(out, 32), in_string);
- free(in_string);
+ DEBUG("out: 0x%8.8x, in: 0x%8.8x", out, *in);
}
else
- DEBUG("out: 0x%8.8x", flip_u32(out, 32));
+ DEBUG("out: 0x%8.8x", out);
}
#endif
return ERROR_OK;
}
-/* put an instruction in the ARM7TDMI pipeline, and optionally read data */
+/* clock the target, reading the databus */
int arm7tdmi_clock_data_in(arm_jtag_t *jtag_info, u32 *in)
{
scan_field_t fields[2];
fields[1].num_bits = 32;
fields[1].out_value = NULL;
fields[1].out_mask = NULL;
- fields[1].in_value = (u8*)in;
+ fields[1].in_value = NULL;
fields[1].in_handler = arm_jtag_buf_to_u32_flip;
fields[1].in_handler_priv = in;
fields[1].in_check_value = NULL;
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
{
- char* in_string;
jtag_execute_queue();
if (in)
{
- in_string = buf_to_char((u8*)in, 32);
- DEBUG("in: %s", in_string);
- free(in_string);
+ DEBUG("in: 0x%8.8x", *in);
+ }
+ else
+ {
+ ERROR("BUG: called with in == NULL");
+ }
+}
+#endif
+
+ 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
+ */
+int arm7tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size, int be)
+{
+ scan_field_t fields[2];
+
+ jtag_add_end_state(TAP_PD);
+ arm_jtag_scann(jtag_info, 0x1);
+ arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
+
+ fields[0].device = jtag_info->chain_pos;
+ fields[0].num_bits = 1;
+ fields[0].out_value = NULL;
+ fields[0].out_mask = NULL;
+ fields[0].in_value = NULL;
+ fields[0].in_check_value = NULL;
+ fields[0].in_check_mask = NULL;
+ fields[0].in_handler = NULL;
+ fields[0].in_handler_priv = NULL;
+
+ fields[1].device = jtag_info->chain_pos;
+ fields[1].num_bits = 32;
+ fields[1].out_value = NULL;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = NULL;
+ switch (size)
+ {
+ case 4:
+ fields[1].in_handler = (be) ? arm_jtag_buf_to_be32_flip : arm_jtag_buf_to_le32_flip;
+ break;
+ case 2:
+ fields[1].in_handler = (be) ? arm_jtag_buf_to_be16_flip : arm_jtag_buf_to_le16_flip;
+ break;
+ case 1:
+ fields[1].in_handler = arm_jtag_buf_to_8_flip;
+ break;
+ }
+ fields[1].in_handler_priv = in;
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+
+ jtag_add_dr_scan(2, fields, -1);
+
+ jtag_add_runtest(0, -1);
+
+#ifdef _DEBUG_INSTRUCTION_EXECUTION_
+{
+ jtag_execute_queue();
+
+ if (in)
+ {
+ DEBUG("in: 0x%8.8x", *in);
+ }
+ else
+ {
+ ERROR("BUG: called with in == NULL");
}
}
#endif
/* nothing fetched, STR r0, [r0] in Execute (2) */
arm7tdmi_clock_data_in(jtag_info, pc);
- /* fetch MOV */
- arm7tdmi_clock_out(jtag_info, ARMV4_5_T_MOV_IM(0, 0x0), NULL, 0);
+ /* use pc-relative LDR to clear r0[1:0] (for switch to ARM mode) */
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_T_LDR_PCREL(0), NULL, 0);
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
+ /* nothing fetched, data for LDR r0, [PC, #0] */
+ arm7tdmi_clock_out(jtag_info, 0x0, NULL, 0);
+ /* nothing fetched, data from previous cycle is written to register */
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
/* fetch BX */
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_BX(0), NULL, 0);
}
+void arm7tdmi_read_core_regs_target_buffer(target_t *target, u32 mask, void* buffer, int size)
+{
+ int i;
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+ int be = (target->endianness == TARGET_BIG_ENDIAN) ? 1 : 0;
+ u32 *buf_u32 = buffer;
+ u16 *buf_u16 = buffer;
+ u8 *buf_u8 = buffer;
+
+ /* STMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), NULL, 0);
+
+ /* fetch NOP, STM in DECODE stage */
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
+ /* fetch NOP, STM in EXECUTE stage (1st cycle) */
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
+
+ for (i = 0; i <= 15; i++)
+ {
+ /* nothing fetched, STM still in EXECUTE (1+i cycle), read databus */
+ if (mask & (1 << i))
+ {
+ switch (size)
+ {
+ case 4:
+ arm7tdmi_clock_data_in_endianness(jtag_info, buf_u32++, 4, be);
+ break;
+ case 2:
+ arm7tdmi_clock_data_in_endianness(jtag_info, buf_u16++, 2, be);
+ break;
+ case 1:
+ arm7tdmi_clock_data_in_endianness(jtag_info, buf_u8++, 1, be);
+ break;
+ }
+ }
+ }
+
+}
+
void arm7tdmi_read_xpsr(target_t *target, u32 *xpsr, int spsr)
{
/* get pointers to arch-specific information */
void arm7tdmi_branch_resume_thumb(target_t *target)
{
- DEBUG("");
+ DEBUG("-");
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
/* target is now in Thumb state */
embeddedice_read_reg(dbg_stat);
- /* clean r0 bits to avoid alignment problems */
- arm7tdmi_clock_out(jtag_info, ARMV4_5_T_MOV_IM(0, 0x0), NULL, 0);
- /* load r0 value, MOV_IM in Decode*/
- arm7tdmi_clock_out(jtag_info, ARMV4_5_T_LDR(0, 0), NULL, 0);
- /* fetch NOP, LDR in Decode, MOV_IM in Execute */
+ /* load r0 value */
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_T_LDR_PCREL(0), NULL, 0);
+ /* fetch NOP, LDR in Decode */
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
/* fetch NOP, LDR in Execute */
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
embeddedice_read_reg(dbg_stat);
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 1);
- arm7tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7f7), NULL, 0);
+ arm7tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7f8), NULL, 0);
}
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
- arm7tdmi_common_t *arch_info = arm7_9->arch_info;
-
(*cache_p) = armv4_5_build_reg_cache(target, armv4_5);
armv4_5->core_cache = (*cache_p);
- (*cache_p)->next = embeddedice_build_reg_cache(target, jtag_info, 0);
+ (*cache_p)->next = embeddedice_build_reg_cache(target, arm7_9);
arm7_9->eice_cache = (*cache_p)->next;
if (arm7_9->has_etm)
(*cache_p)->next->next = etm_build_reg_cache(target, jtag_info, 0);
arm7_9->etm_cache = (*cache_p)->next->next;
}
-
- if (arch_info->has_monitor_mode)
- (*cache_p)->next->reg_list[EICE_DBG_CTRL].size = 6;
- else
- (*cache_p)->next->reg_list[EICE_DBG_CTRL].size = 3;
-
- (*cache_p)->next->reg_list[EICE_DBG_STAT].size = 5;
-
}
int arm7tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
{
armv4_5_common_t *armv4_5;
arm7_9_common_t *arm7_9;
- int has_etm = 0;
arm7_9 = &arm7tdmi->arm7_9_common;
armv4_5 = &arm7_9->armv4_5_common;
arm7_9->examine_debug_reason = arm7tdmi_examine_debug_reason;
arm7_9->change_to_arm = arm7tdmi_change_to_arm;
arm7_9->read_core_regs = arm7tdmi_read_core_regs;
+ arm7_9->read_core_regs_target_buffer = arm7tdmi_read_core_regs_target_buffer;
arm7_9->read_xpsr = arm7tdmi_read_xpsr;
arm7_9->write_xpsr = arm7tdmi_write_xpsr;
arm7_9->sw_bkpts_enabled = 0;
arm7_9->dbgreq_adjust_pc = 2;
arm7_9->arch_info = arm7tdmi;
-
- arm7tdmi->has_monitor_mode = 0;
+
arm7tdmi->arch_info = NULL;
arm7tdmi->common_magic = ARM7TDMI_COMMON_MAGIC;
if (variant)
{
- if (strcmp(variant, "arm7tdmi-s_r4") == 0)
- arm7tdmi->has_monitor_mode = 1;
- else if (strcmp(variant, "arm7tdmi_r4") == 0)
- arm7tdmi->has_monitor_mode = 1;
- else if (strcmp(variant, "lpc2000") == 0)
- {
- arm7tdmi->has_monitor_mode = 1;
- has_etm = 1;
- }
arm7tdmi->variant = strdup(variant);
}
else
+ {
arm7tdmi->variant = strdup("");
+ }
arm7_9_init_arch_info(target, arm7_9);
-
- arm7_9->has_etm = has_etm;
return ERROR_OK;
}
exit(-1);
}
- chain_pos = strtoul(args[2], NULL, 0);
+ chain_pos = strtoul(args[3], NULL, 0);
if (argc >= 5)
variant = args[4];
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