* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
+ * oyvind.harboe@zylin.com *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
#endif
#include "arm7tdmi.h"
+#include "target_type.h"
-#include "arm7_9_common.h"
-#include "register.h"
-#include "target.h"
-#include "armv4_5.h"
-#include "embeddedice.h"
-#include "etm.h"
-#include "log.h"
-#include "jtag.h"
-#include "arm_jtag.h"
-#include <stdlib.h>
-#include <string.h>
+/*
+ * For information about ARM7TDMI, see ARM DDI 0210C (r4p1)
+ * or ARM DDI 0029G (r3). "Debug In Depth", Appendix B,
+ * covers JTAG support.
+ */
#if 0
#define _DEBUG_INSTRUCTION_EXECUTION_
#endif
-/* cli handling */
-int arm7tdmi_register_commands(struct command_context_s *cmd_ctx);
-
-/* forward declarations */
-int arm7tdmi_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
-int arm7tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
-int arm7tdmi_quit();
-
-/* target function declarations */
-int arm7tdmi_poll(struct target_s *target);
-int arm7tdmi_halt(target_t *target);
-
-target_type_t arm7tdmi_target =
+static int arm7tdmi_examine_debug_reason(struct target *target)
{
- .name = "arm7tdmi",
-
- .poll = arm7_9_poll,
- .arch_state = armv4_5_arch_state,
-
- .target_request_data = arm7_9_target_request_data,
-
- .halt = arm7_9_halt,
- .resume = arm7_9_resume,
- .step = arm7_9_step,
+ int retval = ERROR_OK;
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
- .assert_reset = arm7_9_assert_reset,
- .deassert_reset = arm7_9_deassert_reset,
- .soft_reset_halt = arm7_9_soft_reset_halt,
-
- .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
-
- .read_memory = arm7_9_read_memory,
- .write_memory = arm7_9_write_memory,
- .bulk_write_memory = arm7_9_bulk_write_memory,
- .checksum_memory = arm7_9_checksum_memory,
- .blank_check_memory = arm7_9_blank_check_memory,
-
- .run_algorithm = armv4_5_run_algorithm,
-
- .add_breakpoint = arm7_9_add_breakpoint,
- .remove_breakpoint = arm7_9_remove_breakpoint,
- .add_watchpoint = arm7_9_add_watchpoint,
- .remove_watchpoint = arm7_9_remove_watchpoint,
-
- .register_commands = arm7tdmi_register_commands,
- .target_command = arm7tdmi_target_command,
- .init_target = arm7tdmi_init_target,
- .examine = arm7tdmi_examine,
- .quit = arm7tdmi_quit
-};
-
-int arm7tdmi_examine_debug_reason(target_t *target)
-{
- /* 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;
-
/* 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))
{
- scan_field_t fields[2];
- u8 databus[4];
- u8 breakpoint;
-
- jtag_add_end_state(TAP_PD);
+ struct scan_field fields[2];
+ uint8_t databus[4];
+ uint8_t breakpoint;
+
+ jtag_set_end_state(TAP_DRPAUSE);
- fields[0].device = arm7_9->jtag_info.chain_pos;
+ fields[0].tap = arm7_9->jtag_info.tap;
fields[0].num_bits = 1;
fields[0].out_value = NULL;
- fields[0].out_mask = NULL;
fields[0].in_value = &breakpoint;
- 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 = arm7_9->jtag_info.chain_pos;
+
+ fields[1].tap = arm7_9->jtag_info.tap;
fields[1].num_bits = 32;
fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
fields[1].in_value = databus;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
- fields[1].in_handler = NULL;
- fields[1].in_handler_priv = NULL;
-
- arm_jtag_scann(&arm7_9->jtag_info, 0x1);
+
+ if ((retval = arm_jtag_scann(&arm7_9->jtag_info, 0x1)) != ERROR_OK)
+ {
+ return retval;
+ }
arm_jtag_set_instr(&arm7_9->jtag_info, arm7_9->jtag_info.intest_instr, NULL);
- jtag_add_dr_scan(2, fields, TAP_PD);
- jtag_execute_queue();
-
+ jtag_add_dr_scan(2, fields, jtag_set_end_state(TAP_DRPAUSE));
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ return retval;
+ }
+
fields[0].in_value = NULL;
fields[0].out_value = &breakpoint;
fields[1].in_value = NULL;
fields[1].out_value = databus;
-
- jtag_add_dr_scan(2, fields, TAP_PD);
+
+ jtag_add_dr_scan(2, fields, jtag_set_end_state(TAP_DRPAUSE));
if (breakpoint & 1)
- target->debug_reason = DBG_REASON_WATCHPOINT;
+ target->debug_reason = DBG_REASON_WATCHPOINT;
else
- target->debug_reason = DBG_REASON_BREAKPOINT;
+ target->debug_reason = DBG_REASON_BREAKPOINT;
}
return ERROR_OK;
}
-static int arm7tdmi_num_bits[]={1, 32};
-static __inline int arm7tdmi_clock_out_inner(arm_jtag_t *jtag_info, u32 out, int 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)
{
- u32 values[2]={breakpoint, flip_u32(out, 32)};
-
- jtag_add_dr_out(jtag_info->chain_pos,
+ uint32_t values[2]={breakpoint, flip_u32(out, 32)};
+
+ jtag_add_dr_out(jtag_info->tap,
2,
arm7tdmi_num_bits,
values,
- -1);
-
- jtag_add_runtest(0, -1);
+ jtag_get_end_state());
+
+ jtag_add_runtest(0, jtag_get_end_state());
return ERROR_OK;
}
-/* put an instruction in the ARM7TDMI pipeline or write the data bus, and optionally read data */
-static __inline int arm7tdmi_clock_out(arm_jtag_t *jtag_info, u32 out, u32 *deprecated, int breakpoint)
+/* put an instruction in the ARM7TDMI pipeline or write the data bus,
+ * and optionally read data
+ *
+ * FIXME remove the unused "deprecated" parameter
+ */
+static __inline int arm7tdmi_clock_out(struct arm_jtag *jtag_info,
+ uint32_t out, uint32_t *deprecated, int breakpoint)
{
- jtag_add_end_state(TAP_PD);
+ jtag_set_end_state(TAP_DRPAUSE);
arm_jtag_scann(jtag_info, 0x1);
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
-
+
return arm7tdmi_clock_out_inner(jtag_info, out, breakpoint);
}
/* clock the target, reading the databus */
-int arm7tdmi_clock_data_in(arm_jtag_t *jtag_info, u32 *in)
+static int arm7tdmi_clock_data_in(struct arm_jtag *jtag_info, uint32_t *in)
{
- scan_field_t fields[2];
+ int retval = ERROR_OK;
+ struct scan_field fields[2];
- jtag_add_end_state(TAP_PD);
- arm_jtag_scann(jtag_info, 0x1);
+ jtag_set_end_state(TAP_DRPAUSE);
+ if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
+ {
+ return retval;
+ }
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
-
- fields[0].device = jtag_info->chain_pos;
+
+ fields[0].tap = jtag_info->tap;
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].tap = jtag_info->tap;
fields[1].num_bits = 32;
fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
- 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;
- fields[1].in_check_mask = NULL;
+ fields[1].in_value = (uint8_t *)in;
+
+ jtag_add_dr_scan(2, fields, jtag_get_end_state());
- jtag_add_dr_scan(2, fields, -1);
+ jtag_add_callback(arm7flip32, (jtag_callback_data_t)in);
+
+ jtag_add_runtest(0, jtag_get_end_state());
- jtag_add_runtest(0, -1);
-
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ return retval;
+
+ if (in)
+ LOG_DEBUG("in: 0x%8.8x", *in);
+ else
+ LOG_ERROR("BUG: called with in == NULL");
+#endif
+
+ return ERROR_OK;
+}
+
+void arm_endianness(uint8_t *tmp, void *in, int size, int be, int flip)
{
- jtag_execute_queue();
-
- if (in)
- {
- LOG_DEBUG("in: 0x%8.8x", *in);
- }
- else
- {
- LOG_ERROR("BUG: called with in == NULL");
- }
+ 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;
+ }
}
-#endif
+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
- */
-int arm7tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size, int be)
+ * are stored in big (be == 1) or little (be == 0) endianness
+ */
+static int arm7tdmi_clock_data_in_endianness(struct arm_jtag *jtag_info,
+ void *in, int size, int be)
{
- scan_field_t fields[2];
+ int retval = ERROR_OK;
+ struct scan_field fields[2];
- jtag_add_end_state(TAP_PD);
- arm_jtag_scann(jtag_info, 0x1);
+ jtag_set_end_state(TAP_DRPAUSE);
+ if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
+ {
+ return retval;
+ }
arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
-
- fields[0].device = jtag_info->chain_pos;
+
+ fields[0].tap = jtag_info->tap;
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].tap = jtag_info->tap;
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_alloc_in_value32(&fields[1]);
+
+ jtag_add_dr_scan(2, fields, jtag_get_end_state());
- jtag_add_dr_scan(2, fields, -1);
+ jtag_add_callback4(arm7endianness, (jtag_callback_data_t)in, (jtag_callback_data_t)size, (jtag_callback_data_t)be, (jtag_callback_data_t)fields[1].in_value);
+
+ jtag_add_runtest(0, jtag_get_end_state());
- jtag_add_runtest(0, -1);
-
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
{
- jtag_execute_queue();
-
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ return retval;
+ }
+
if (in)
{
- LOG_DEBUG("in: 0x%8.8x", *in);
+ LOG_DEBUG("in: 0x%8.8x", *(uint32_t*)in);
}
else
{
return ERROR_OK;
}
-void arm7tdmi_change_to_arm(target_t *target, u32 *r0, u32 *pc)
+static void arm7tdmi_change_to_arm(struct target *target,
+ uint32_t *r0, uint32_t *pc)
{
- /* 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;
-
- /* save r0 before using it and put system in ARM state
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
+ /* save r0 before using it and put system in ARM state
* to allow common handling of ARM and THUMB debugging */
-
+
/* fetch STR r0, [r0] */
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
/* nothing fetched, STR r0, [r0] in Execute (2) */
arm7tdmi_clock_data_in(jtag_info, r0);
- /* MOV r0, r15 fetched, STR in Decode */
+ /* MOV r0, r15 fetched, STR in Decode */
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_MOV(0, 15), NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 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);
/* NOP fetched, BX in Decode, MOV in Execute */
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
/* NOP fetched, BX in Execute (1) */
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
-
+
jtag_execute_queue();
-
+
/* fix program counter:
* MOV r0, r15 was the 4th instruction (+6)
* reading PC in Thumb state gives address of instruction + 4
*/
*pc -= 0xa;
-
}
-void arm7tdmi_read_core_regs(target_t *target, u32 mask, u32* core_regs[16])
+
+/* 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?
+ *
+ * The solution is to arrange for a large out/in scan in this loop and
+ * and convert data afterwards.
+ */
+static void arm7tdmi_read_core_regs(struct target *target,
+ uint32_t mask, uint32_t* core_regs[16])
{
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;
-
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
/* STMIA r0-15, [r0] at debug speed
* register values will start to appear on 4th DCLK
*/
for (i = 0; i <= 15; i++)
{
if (mask & (1 << i))
- /* nothing fetched, STM still in EXECUTE (1+i cycle) */
+ /* nothing fetched, STM still in EXECUTE (1 + i cycle) */
arm7tdmi_clock_data_in(jtag_info, core_regs[i]);
}
-
}
-void arm7tdmi_read_core_regs_target_buffer(target_t *target, u32 mask, void* buffer, int size)
+static void arm7tdmi_read_core_regs_target_buffer(struct target *target,
+ uint32_t 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;
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *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;
-
+ uint32_t *buf_u32 = buffer;
+ uint16_t *buf_u16 = buffer;
+ uint8_t *buf_u8 = buffer;
+
/* STMIA r0-15, [r0] at debug speed
* register values will start to appear on 4th DCLK
*/
for (i = 0; i <= 15; i++)
{
- /* nothing fetched, STM still in EXECUTE (1+i cycle), read databus */
+ /* nothing fetched, STM still in EXECUTE (1 + i cycle), read databus */
if (mask & (1 << i))
{
switch (size)
}
}
}
-
}
-void arm7tdmi_read_xpsr(target_t *target, u32 *xpsr, int spsr)
+static void arm7tdmi_read_xpsr(struct target *target, uint32_t *xpsr, int spsr)
{
- /* 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;
-
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
/* MRS r0, cpsr */
arm7tdmi_clock_out(jtag_info, ARMV4_5_MRS(0, spsr & 1), NULL, 0);
-
+
/* STR r0, [r15] */
arm7tdmi_clock_out(jtag_info, ARMV4_5_STR(0, 15), NULL, 0);
/* fetch NOP, STR in DECODE stage */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
/* nothing fetched, STR still in EXECUTE (2nd cycle) */
arm7tdmi_clock_data_in(jtag_info, xpsr);
-
}
-void arm7tdmi_write_xpsr(target_t *target, u32 xpsr, int spsr)
+static void arm7tdmi_write_xpsr(struct target *target, uint32_t xpsr, int spsr)
{
- /* 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;
-
- LOG_DEBUG("xpsr: %8.8x, spsr: %i", xpsr, spsr);
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
+ LOG_DEBUG("xpsr: %8.8" PRIx32 ", spsr: %i", xpsr, spsr);
/* MSR1 fetched */
arm7tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr & 0xff, 0, 1, spsr), NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
}
-void arm7tdmi_write_xpsr_im8(target_t *target, u8 xpsr_im, int rot, int spsr)
+static void arm7tdmi_write_xpsr_im8(struct target *target,
+ uint8_t xpsr_im, int rot, int spsr)
{
- /* 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;
-
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
LOG_DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
-
+
/* MSR fetched */
arm7tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr_im, rot, 1, spsr), NULL, 0);
/* NOP fetched, MSR in DECODE */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
/* nothing fetched, MSR in EXECUTE (2) */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
-
}
-void arm7tdmi_write_core_regs(target_t *target, u32 mask, u32 core_regs[16])
+static void arm7tdmi_write_core_regs(struct target *target,
+ uint32_t mask, uint32_t core_regs[16])
{
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;
-
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
/* LDMIA r0-15, [r0] at debug speed
* register values will start to appear on 4th DCLK
*/
for (i = 0; i <= 15; i++)
{
if (mask & (1 << i))
- /* nothing fetched, LDM still in EXECUTE (1+i cycle) */
+ /* nothing fetched, LDM still in EXECUTE (1 + i cycle) */
arm7tdmi_clock_out_inner(jtag_info, core_regs[i], 0);
}
arm7tdmi_clock_out_inner(jtag_info, ARMV4_5_NOP, 0);
-
}
-void arm7tdmi_load_word_regs(target_t *target, u32 mask)
+static void arm7tdmi_load_word_regs(struct target *target, uint32_t mask)
{
- /* 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;
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
/* put system-speed load-multiple into the pipeline */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
arm7tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 1), NULL, 0);
-
}
-void arm7tdmi_load_hword_reg(target_t *target, int num)
+static void arm7tdmi_load_hword_reg(struct target *target, int num)
{
- /* 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;
-
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
/* put system-speed load half-word into the pipeline */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
arm7tdmi_clock_out(jtag_info, ARMV4_5_LDRH_IP(num, 0), NULL, 0);
-
}
-void arm7tdmi_load_byte_reg(target_t *target, int num)
+static void arm7tdmi_load_byte_reg(struct target *target, int num)
{
- /* 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;
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
/* put system-speed load byte into the pipeline */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
arm7tdmi_clock_out(jtag_info, ARMV4_5_LDRB_IP(num, 0), NULL, 0);
-
}
-void arm7tdmi_store_word_regs(target_t *target, u32 mask)
+static void arm7tdmi_store_word_regs(struct target *target, uint32_t mask)
{
- /* 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;
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
/* put system-speed store-multiple into the pipeline */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
arm7tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask, 0, 1), NULL, 0);
-
}
-void arm7tdmi_store_hword_reg(target_t *target, int num)
+static void arm7tdmi_store_hword_reg(struct target *target, int num)
{
- /* 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;
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
/* put system-speed store half-word into the pipeline */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
arm7tdmi_clock_out(jtag_info, ARMV4_5_STRH_IP(num, 0), NULL, 0);
-
}
-void arm7tdmi_store_byte_reg(target_t *target, int num)
+static void arm7tdmi_store_byte_reg(struct target *target, int num)
{
- /* 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;
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
/* put system-speed store byte into the pipeline */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
arm7tdmi_clock_out(jtag_info, ARMV4_5_STRB_IP(num, 0), NULL, 0);
-
}
-void arm7tdmi_write_pc(target_t *target, u32 pc)
+static void arm7tdmi_write_pc(struct target *target, uint32_t pc)
{
- /* 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;
-
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
/* LDMIA r0-15, [r0] at debug speed
* register values will start to appear on 4th DCLK
*/
arm7tdmi_clock_out_inner(jtag_info, ARMV4_5_NOP, 0);
}
-void arm7tdmi_branch_resume(target_t *target)
+static void arm7tdmi_branch_resume(struct target *target)
{
- /* 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;
-
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
arm7tdmi_clock_out_inner(jtag_info, ARMV4_5_B(0xfffffa, 0), 0);
-
}
-void arm7tdmi_branch_resume_thumb(target_t *target)
+static void arm7tdmi_branch_resume_thumb(struct target *target)
{
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+ struct armv4_5_common_s *armv4_5 = &arm7_9->armv4_5_common;
+ struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+ struct reg *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
+
LOG_DEBUG("-");
-
- /* 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;
- reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
/* LDMIA r0, [r0] at debug speed
* register values will start to appear on 4th DCLK
/* Branch and eXchange */
arm7tdmi_clock_out(jtag_info, ARMV4_5_BX(0), NULL, 0);
-
+
embeddedice_read_reg(dbg_stat);
-
+
/* fetch NOP, BX in DECODE stage */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
-
+
/* target is now in Thumb state */
embeddedice_read_reg(dbg_stat);
-
+
/* fetch NOP, BX in EXECUTE stage (1st cycle) */
arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
arm7tdmi_clock_out(jtag_info, buf_get_u32(armv4_5->core_cache->reg_list[0].value, 0, 32), NULL, 0);
/* nothing fetched, LDR in EXECUTE stage (3rd cycle) */
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
-
+
arm7tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, NULL, 0);
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(0x7f8), NULL, 0);
-
}
-
-void arm7tdmi_build_reg_cache(target_t *target)
+
+static void arm7tdmi_build_reg_cache(struct target *target)
{
- reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
- /* get pointers to arch-specific information */
- armv4_5_common_t *armv4_5 = target->arch_info;
+ struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
(*cache_p) = armv4_5_build_reg_cache(target, armv4_5);
armv4_5->core_cache = (*cache_p);
}
-int arm7tdmi_examine(struct command_context_s *cmd_ctx, struct target_s *target)
+int arm7tdmi_examine(struct target *target)
{
+ struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
int retval;
- armv4_5_common_t *armv4_5 = target->arch_info;
- arm7_9_common_t *arm7_9 = armv4_5->arch_info;
- if (!target->type->examined)
+
+
+ if (!target_was_examined(target))
{
/* get pointers to arch-specific information */
- reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
- reg_cache_t *t=embeddedice_build_reg_cache(target, arm7_9);
- if (t==NULL)
+ struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
+ struct reg_cache *t = embeddedice_build_reg_cache(target, arm7_9);
+ if (t == NULL)
return ERROR_FAIL;
-
+
(*cache_p) = t;
arm7_9->eice_cache = (*cache_p);
-
- if (arm7_9->etm_ctx)
- {
- arm_jtag_t *jtag_info = &arm7_9->jtag_info;
- (*cache_p)->next = etm_build_reg_cache(target, jtag_info, arm7_9->etm_ctx);
- arm7_9->etm_ctx->reg_cache = (*cache_p)->next;
- }
- target->type->examined = 1;
+
+ if (arm7_9->armv4_5_common.etm)
+ (*cache_p)->next = etm_build_reg_cache(target,
+ &arm7_9->jtag_info,
+ arm7_9->armv4_5_common.etm);
+
+ target_set_examined(target);
}
- if ((retval=embeddedice_setup(target))!=ERROR_OK)
+ if ((retval = embeddedice_setup(target)) != ERROR_OK)
return retval;
- if ((retval=arm7_9_setup(target))!=ERROR_OK)
+ if ((retval = arm7_9_setup(target)) != ERROR_OK)
return retval;
- if (arm7_9->etm_ctx)
+ if (arm7_9->armv4_5_common.etm)
{
- if ((retval=etm_setup(target))!=ERROR_OK)
+ if ((retval = etm_setup(target)) != ERROR_OK)
return retval;
}
return ERROR_OK;
}
-int arm7tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
+int arm7tdmi_init_target(struct command_context *cmd_ctx, struct target *target)
{
-
arm7tdmi_build_reg_cache(target);
-
- return ERROR_OK;
-
-}
-int arm7tdmi_quit()
-{
-
return ERROR_OK;
}
-int arm7tdmi_init_arch_info(target_t *target, arm7tdmi_common_t *arm7tdmi, int chain_pos, char *variant)
+int arm7tdmi_init_arch_info(struct target *target, struct arm7tdmi_common *arm7tdmi, struct jtag_tap *tap)
{
- armv4_5_common_t *armv4_5;
- arm7_9_common_t *arm7_9;
-
- arm7_9 = &arm7tdmi->arm7_9_common;
- armv4_5 = &arm7_9->armv4_5_common;
-
+ struct arm7_9_common *arm7_9 = &arm7tdmi->arm7_9_common;
+
/* prepare JTAG information for the new target */
- arm7_9->jtag_info.chain_pos = chain_pos;
+ arm7_9->jtag_info.tap = tap;
arm7_9->jtag_info.scann_size = 4;
-
+
/* register arch-specific functions */
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->write_xpsr_im8 = arm7tdmi_write_xpsr_im8;
arm7_9->write_core_regs = arm7tdmi_write_core_regs;
-
+
arm7_9->load_word_regs = arm7tdmi_load_word_regs;
arm7_9->load_hword_reg = arm7tdmi_load_hword_reg;
arm7_9->load_byte_reg = arm7tdmi_load_byte_reg;
-
+
arm7_9->store_word_regs = arm7tdmi_store_word_regs;
arm7_9->store_hword_reg = arm7tdmi_store_hword_reg;
arm7_9->store_byte_reg = arm7tdmi_store_byte_reg;
-
+
arm7_9->write_pc = arm7tdmi_write_pc;
arm7_9->branch_resume = arm7tdmi_branch_resume;
arm7_9->branch_resume_thumb = arm7tdmi_branch_resume_thumb;
-
+
arm7_9->enable_single_step = arm7_9_enable_eice_step;
arm7_9->disable_single_step = arm7_9_disable_eice_step;
-
- arm7_9->pre_debug_entry = NULL;
+
arm7_9->post_debug_entry = NULL;
-
+
arm7_9->pre_restore_context = NULL;
arm7_9->post_restore_context = NULL;
-
+
/* initialize arch-specific breakpoint handling */
arm7_9->arm_bkpt = 0xdeeedeee;
arm7_9->thumb_bkpt = 0xdeee;
-
- arm7_9->sw_bkpts_use_wp = 1;
- arm7_9->sw_bkpts_enabled = 0;
+
arm7_9->dbgreq_adjust_pc = 2;
- arm7_9->arch_info = arm7tdmi;
- arm7tdmi->arch_info = NULL;
- arm7tdmi->common_magic = ARM7TDMI_COMMON_MAGIC;
-
- if (variant)
- {
- arm7tdmi->variant = strdup(variant);
- }
- else
- {
- arm7tdmi->variant = strdup("");
- }
-
arm7_9_init_arch_info(target, arm7_9);
return ERROR_OK;
}
-/* target arm7tdmi <endianess> <startup_mode> <chain_pos> <variant> */
-int arm7tdmi_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
+static int arm7tdmi_target_create(struct target *target, Jim_Interp *interp)
{
- int chain_pos;
- char *variant = NULL;
- arm7tdmi_common_t *arm7tdmi = malloc(sizeof(arm7tdmi_common_t));
- memset(arm7tdmi, 0, sizeof(*arm7tdmi));
+ struct arm7tdmi_common *arm7tdmi;
+
+ arm7tdmi = calloc(1,sizeof(struct arm7tdmi_common));
+ arm7tdmi_init_arch_info(target, arm7tdmi, target->tap);
+ arm7tdmi->arm7_9_common.armv4_5_common.is_armv4 = true;
- if (argc < 4)
- {
- LOG_ERROR("'target arm7tdmi' requires at least one additional argument");
- exit(-1);
- }
-
- chain_pos = strtoul(args[3], NULL, 0);
-
- if (argc >= 5)
- variant = args[4];
-
- arm7tdmi_init_arch_info(target, arm7tdmi, chain_pos, variant);
-
return ERROR_OK;
}
-int arm7tdmi_register_commands(struct command_context_s *cmd_ctx)
+/** Holds methods for ARM7TDMI targets. */
+struct target_type arm7tdmi_target =
{
- int retval;
-
- retval = arm7_9_register_commands(cmd_ctx);
-
- return ERROR_OK;
+ .name = "arm7tdmi",
-}
+ .poll = arm7_9_poll,
+ .arch_state = armv4_5_arch_state,
+
+ .target_request_data = arm7_9_target_request_data,
+ .halt = arm7_9_halt,
+ .resume = arm7_9_resume,
+ .step = arm7_9_step,
+
+ .assert_reset = arm7_9_assert_reset,
+ .deassert_reset = arm7_9_deassert_reset,
+ .soft_reset_halt = arm7_9_soft_reset_halt,
+
+ .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
+
+ .read_memory = arm7_9_read_memory,
+ .write_memory = arm7_9_write_memory,
+ .bulk_write_memory = arm7_9_bulk_write_memory,
+ .checksum_memory = arm7_9_checksum_memory,
+ .blank_check_memory = arm7_9_blank_check_memory,
+
+ .run_algorithm = armv4_5_run_algorithm,
+
+ .add_breakpoint = arm7_9_add_breakpoint,
+ .remove_breakpoint = arm7_9_remove_breakpoint,
+ .add_watchpoint = arm7_9_add_watchpoint,
+ .remove_watchpoint = arm7_9_remove_watchpoint,
+
+ .register_commands = arm7_9_register_commands,
+ .target_create = arm7tdmi_target_create,
+ .init_target = arm7tdmi_init_target,
+ .examine = arm7tdmi_examine,
+};
Code Review / openocd.git / blobdiff