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-rw-r--r--src/target/arm9tdmi.c2210
1 files changed, 1105 insertions, 1105 deletions
diff --git a/src/target/arm9tdmi.c b/src/target/arm9tdmi.c
index 5f808cdb..7170693d 100644
--- a/src/target/arm9tdmi.c
+++ b/src/target/arm9tdmi.c
@@ -1,1105 +1,1105 @@
-/***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * 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 *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "arm9tdmi.h"
-
-#include "arm7_9_common.h"
-#include "register.h"
-#include "target.h"
-#include "armv4_5.h"
-#include "embeddedice.h"
-#include "etm.h"
-#include "etb.h"
-#include "log.h"
-#include "jtag.h"
-#include "arm_jtag.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-#if 0
-#define _DEBUG_INSTRUCTION_EXECUTION_
-#endif
-
-/* cli handling */
-int arm9tdmi_register_commands(struct command_context_s *cmd_ctx);
-int handle_arm9tdmi_catch_vectors_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
-/* forward declarations */
-int arm9tdmi_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
-int arm9tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
-int arm9tdmi_quit();
-
-target_type_t arm9tdmi_target =
-{
- .name = "arm9tdmi",
-
- .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,
- .prepare_reset_halt = arm7_9_prepare_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,
-
- .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 = arm9tdmi_register_commands,
- .target_command = arm9tdmi_target_command,
- .init_target = arm9tdmi_init_target,
- .quit = arm9tdmi_quit
-};
-
-arm9tdmi_vector_t arm9tdmi_vectors[] =
-{
- {"reset", ARM9TDMI_RESET_VECTOR},
- {"undef", ARM9TDMI_UNDEF_VECTOR},
- {"swi", ARM9TDMI_SWI_VECTOR},
- {"pabt", ARM9TDMI_PABT_VECTOR},
- {"dabt", ARM9TDMI_DABT_VECTOR},
- {"reserved", ARM9TDMI_RESERVED_VECTOR},
- {"irq", ARM9TDMI_IRQ_VECTOR},
- {"fiq", ARM9TDMI_FIQ_VECTOR},
- {0, 0},
-};
-
-int arm9tdmi_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[3];
- u8 databus[4];
- u8 instructionbus[4];
- u8 debug_reason;
-
- jtag_add_end_state(TAP_PD);
-
- fields[0].device = arm7_9->jtag_info.chain_pos;
- fields[0].num_bits = 32;
- fields[0].out_value = NULL;
- fields[0].out_mask = NULL;
- fields[0].in_value = databus;
- 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].num_bits = 3;
- fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
- fields[1].in_value = &debug_reason;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
- fields[1].in_handler = NULL;
- fields[1].in_handler_priv = NULL;
-
- fields[2].device = arm7_9->jtag_info.chain_pos;
- fields[2].num_bits = 32;
- fields[2].out_value = NULL;
- fields[2].out_mask = NULL;
- fields[2].in_value = instructionbus;
- fields[2].in_check_value = NULL;
- fields[2].in_check_mask = NULL;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
- arm_jtag_scann(&arm7_9->jtag_info, 0x1);
- arm_jtag_set_instr(&arm7_9->jtag_info, arm7_9->jtag_info.intest_instr, NULL);
-
- jtag_add_dr_scan(3, fields, TAP_PD, NULL);
- jtag_execute_queue();
-
- fields[0].in_value = NULL;
- fields[0].out_value = databus;
- fields[1].in_value = NULL;
- fields[1].out_value = &debug_reason;
- fields[2].in_value = NULL;
- fields[2].out_value = instructionbus;
-
- jtag_add_dr_scan(3, fields, TAP_PD, NULL);
-
- if (debug_reason & 0x4)
- if (debug_reason & 0x2)
- target->debug_reason = DBG_REASON_WPTANDBKPT;
- else
- target->debug_reason = DBG_REASON_WATCHPOINT;
- else
- target->debug_reason = DBG_REASON_BREAKPOINT;
- }
-
- return ERROR_OK;
-}
-
-/* put an instruction in the ARM9TDMI pipeline or write the data bus, and optionally read data */
-int arm9tdmi_clock_out(arm_jtag_t *jtag_info, u32 instr, u32 out, u32 *in, int sysspeed)
-{
- scan_field_t fields[3];
- u8 out_buf[4];
- u8 instr_buf[4];
- u8 sysspeed_buf = 0x0;
-
- /* prepare buffer */
- buf_set_u32(out_buf, 0, 32, out);
-
- buf_set_u32(instr_buf, 0, 32, flip_u32(instr, 32));
-
- if (sysspeed)
- buf_set_u32(&sysspeed_buf, 2, 1, 1);
-
- jtag_add_end_state(TAP_PD);
- arm_jtag_scann(jtag_info, 0x1);
-
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
-
- fields[0].device = jtag_info->chain_pos;
- fields[0].num_bits = 32;
- fields[0].out_value = out_buf;
- fields[0].out_mask = NULL;
- fields[0].in_value = NULL;
- if (in)
- {
- fields[0].in_handler = arm_jtag_buf_to_u32;
- fields[0].in_handler_priv = in;
- }
- else
- {
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
- }
- fields[0].in_check_value = NULL;
- fields[0].in_check_mask = NULL;
-
- fields[1].device = jtag_info->chain_pos;
- fields[1].num_bits = 3;
- fields[1].out_value = &sysspeed_buf;
- fields[1].out_mask = NULL;
- fields[1].in_value = NULL;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
- fields[1].in_handler = NULL;
- fields[1].in_handler_priv = NULL;
-
- fields[2].device = jtag_info->chain_pos;
- fields[2].num_bits = 32;
- fields[2].out_value = instr_buf;
- fields[2].out_mask = NULL;
- fields[2].in_value = NULL;
- fields[2].in_check_value = NULL;
- fields[2].in_check_mask = NULL;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
- jtag_add_dr_scan(3, fields, -1, NULL);
-
- jtag_add_runtest(0, -1);
-
-#ifdef _DEBUG_INSTRUCTION_EXECUTION_
- {
- jtag_execute_queue();
-
- if (in)
- {
- DEBUG("instr: 0x%8.8x, out: 0x%8.8x, in: 0x%8.8x", instr, out, *in);
- }
- else
- DEBUG("instr: 0x%8.8x, out: 0x%8.8x", instr, out);
- }
-#endif
-
- return ERROR_OK;
-}
-
-/* just read data (instruction and data-out = don't care) */
-int arm9tdmi_clock_data_in(arm_jtag_t *jtag_info, u32 *in)
-{
- scan_field_t fields[3];
-
- jtag_add_end_state(TAP_PD);
- arm_jtag_scann(jtag_info, 0x1);
-
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
-
- fields[0].device = jtag_info->chain_pos;
- fields[0].num_bits = 32;
- fields[0].out_value = NULL;
- fields[0].out_mask = NULL;
- fields[0].in_value = NULL;
- fields[0].in_handler = arm_jtag_buf_to_u32;
- fields[0].in_handler_priv = in;
- fields[0].in_check_value = NULL;
- fields[0].in_check_mask = NULL;
-
- fields[1].device = jtag_info->chain_pos;
- fields[1].num_bits = 3;
- fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
- 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;
-
- fields[2].device = jtag_info->chain_pos;
- fields[2].num_bits = 32;
- fields[2].out_value = NULL;
- fields[2].out_mask = NULL;
- fields[2].in_value = NULL;
- fields[2].in_check_value = NULL;
- fields[2].in_check_mask = NULL;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
- jtag_add_dr_scan(3, fields, -1, NULL);
-
- 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
-
- 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 arm9tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size, int be)
-{
- scan_field_t fields[3];
-
- jtag_add_end_state(TAP_PD);
- arm_jtag_scann(jtag_info, 0x1);
-
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
-
- fields[0].device = jtag_info->chain_pos;
- fields[0].num_bits = 32;
- fields[0].out_value = NULL;
- fields[0].out_mask = NULL;
- fields[0].in_value = NULL;
- switch (size)
- {
- case 4:
- fields[0].in_handler = (be) ? arm_jtag_buf_to_be32 : arm_jtag_buf_to_le32;
- break;
- case 2:
- fields[0].in_handler = (be) ? arm_jtag_buf_to_be16 : arm_jtag_buf_to_le16;
- break;
- case 1:
- fields[0].in_handler = arm_jtag_buf_to_8;
- break;
- }
- fields[0].in_handler_priv = in;
- fields[0].in_check_value = NULL;
- fields[0].in_check_mask = NULL;
-
- fields[1].device = jtag_info->chain_pos;
- fields[1].num_bits = 3;
- fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
- 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;
-
- fields[2].device = jtag_info->chain_pos;
- fields[2].num_bits = 32;
- fields[2].out_value = NULL;
- fields[2].out_mask = NULL;
- fields[2].in_value = NULL;
- fields[2].in_check_value = NULL;
- fields[2].in_check_mask = NULL;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
- jtag_add_dr_scan(3, fields, -1, NULL);
-
- 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
-
- return ERROR_OK;
-}
-
-void arm9tdmi_change_to_arm(target_t *target, u32 *r0, u32 *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
- * to allow common handling of ARM and THUMB debugging */
-
- /* fetch STR r0, [r0] */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- /* STR r0, [r0] in Memory */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, r0, 0);
-
- /* MOV r0, r15 fetched, STR in Decode */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_MOV(0, 15), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- /* nothing fetched, STR r0, [r0] in Memory */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, pc, 0);
-
- /* use pc-relative LDR to clear r0[1:0] (for switch to ARM mode) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDR_PCREL(0), 0, NULL, 0);
- /* LDR in Decode */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- /* LDR in Execute */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- /* LDR in Memory (to account for interlock) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
-
- /* fetch BX */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_BX(0), 0, NULL, 0);
- /* NOP fetched, BX in Decode, MOV in Execute */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- /* NOP fetched, BX in Execute (1) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
-
- jtag_execute_queue();
-
- /* fix program counter:
- * MOV r0, r15 was the 5th instruction (+8)
- * reading PC in Thumb state gives address of instruction + 4
- */
- *pc -= 0xc;
-}
-
-void arm9tdmi_read_core_regs(target_t *target, u32 mask, u32* 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;
-
- /* STMIA r0-15, [r0] at debug speed
- * register values will start to appear on 4th DCLK
- */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
-
- /* fetch NOP, STM in DECODE stage */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* fetch NOP, STM in EXECUTE stage (1st cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- for (i = 0; i <= 15; i++)
- {
- if (mask & (1 << i))
- /* nothing fetched, STM in MEMORY (i'th cycle) */
- arm9tdmi_clock_data_in(jtag_info, core_regs[i]);
- }
-
-}
-
-void arm9tdmi_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
- */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
-
- /* fetch NOP, STM in DECODE stage */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* fetch NOP, STM in EXECUTE stage (1st cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- for (i = 0; i <= 15; i++)
- {
- if (mask & (1 << i))
- /* nothing fetched, STM in MEMORY (i'th cycle) */
- switch (size)
- {
- case 4:
- arm9tdmi_clock_data_in_endianness(jtag_info, buf_u32++, 4, be);
- break;
- case 2:
- arm9tdmi_clock_data_in_endianness(jtag_info, buf_u16++, 2, be);
- break;
- case 1:
- arm9tdmi_clock_data_in_endianness(jtag_info, buf_u8++, 1, be);
- break;
- }
- }
-
-}
-
-void arm9tdmi_read_xpsr(target_t *target, u32 *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;
-
- /* MRS r0, cpsr */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_MRS(0, spsr & 1), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- /* STR r0, [r15] */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_STR(0, 15), 0, NULL, 0);
- /* fetch NOP, STR in DECODE stage */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* fetch NOP, STR in EXECUTE stage (1st cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* nothing fetched, STR in MEMORY */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, xpsr, 0);
-
-}
-
-void arm9tdmi_write_xpsr(target_t *target, u32 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;
-
- DEBUG("xpsr: %8.8x, spsr: %i", xpsr, spsr);
-
- /* MSR1 fetched */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr & 0xff, 0, 1, spsr), 0, NULL, 0);
- /* MSR2 fetched, MSR1 in DECODE */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff00) >> 8, 0xc, 2, spsr), 0, NULL, 0);
- /* MSR3 fetched, MSR1 in EXECUTE (1), MSR2 in DECODE */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff0000) >> 16, 0x8, 4, spsr), 0, NULL, 0);
- /* nothing fetched, MSR1 in EXECUTE (2) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* nothing fetched, MSR1 in EXECUTE (3) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* MSR4 fetched, MSR2 in EXECUTE (1), MSR3 in DECODE */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff000000) >> 24, 0x4, 8, spsr), 0, NULL, 0);
- /* nothing fetched, MSR2 in EXECUTE (2) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* nothing fetched, MSR2 in EXECUTE (3) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* NOP fetched, MSR3 in EXECUTE (1), MSR4 in DECODE */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* nothing fetched, MSR3 in EXECUTE (2) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* nothing fetched, MSR3 in EXECUTE (3) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* NOP fetched, MSR4 in EXECUTE (1) */
- /* last MSR writes flags, which takes only one cycle */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-}
-
-void arm9tdmi_write_xpsr_im8(target_t *target, u8 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;
-
- DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
-
- /* MSR fetched */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr_im, rot, 1, spsr), 0, NULL, 0);
- /* NOP fetched, MSR in DECODE */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* NOP fetched, MSR in EXECUTE (1) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- /* rot == 4 writes flags, which takes only one cycle */
- if (rot != 4)
- {
- /* nothing fetched, MSR in EXECUTE (2) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* nothing fetched, MSR in EXECUTE (3) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- }
-}
-
-void arm9tdmi_write_core_regs(target_t *target, u32 mask, u32 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;
-
- /* LDMIA r0-15, [r0] at debug speed
- * register values will start to appear on 4th DCLK
- */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
-
- /* fetch NOP, LDM in DECODE stage */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* fetch NOP, LDM in EXECUTE stage (1st cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- for (i = 0; i <= 15; i++)
- {
- if (mask & (1 << i))
- /* nothing fetched, LDM still in EXECUTE (1+i cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, core_regs[i], NULL, 0);
- }
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
-}
-
-void arm9tdmi_load_word_regs(target_t *target, u32 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;
-
- /* put system-speed load-multiple into the pipeline */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 1), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
-}
-
-void arm9tdmi_load_hword_reg(target_t *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;
-
- /* put system-speed load half-word into the pipeline */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_LDRH_IP(num, 0), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-}
-
-void arm9tdmi_load_byte_reg(target_t *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;
-
- /* put system-speed load byte into the pipeline */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_LDRB_IP(num, 0), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
-}
-
-void arm9tdmi_store_word_regs(target_t *target, u32 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;
-
- /* put system-speed store-multiple into the pipeline */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask, 0, 1), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
-}
-
-void arm9tdmi_store_hword_reg(target_t *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;
-
- /* put system-speed store half-word into the pipeline */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_STRH_IP(num, 0), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
-}
-
-void arm9tdmi_store_byte_reg(target_t *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;
-
- /* put system-speed store byte into the pipeline */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_STRB_IP(num, 0), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
-}
-
-void arm9tdmi_write_pc(target_t *target, u32 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;
-
- /* LDMIA r0-15, [r0] at debug speed
- * register values will start to appear on 4th DCLK
- */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, 0x8000, 0, 0), 0, NULL, 0);
-
- /* fetch NOP, LDM in DECODE stage */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* fetch NOP, LDM in EXECUTE stage (1st cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* nothing fetched, LDM in EXECUTE stage (2nd cycle) (output data) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, pc, NULL, 0);
- /* nothing fetched, LDM in EXECUTE stage (3rd cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* fetch NOP, LDM in EXECUTE stage (4th cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* fetch NOP, LDM in EXECUTE stage (5th cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
-}
-
-void arm9tdmi_branch_resume(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;
- arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
- arm9tdmi_clock_out(jtag_info, ARMV4_5_B(0xfffffc, 0), 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
-}
-
-void arm9tdmi_branch_resume_thumb(target_t *target)
-{
- 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 r0-15, [r0] at debug speed
- * register values will start to appear on 4th DCLK
- */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, 0x1, 0, 0), 0, NULL, 0);
-
- /* fetch NOP, LDM in DECODE stage */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* fetch NOP, LDM in EXECUTE stage (1st cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
- /* nothing fetched, LDM in EXECUTE stage (2nd cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32) | 1, NULL, 0);
- /* nothing fetched, LDM in EXECUTE stage (3rd cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- /* Branch and eXchange */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_BX(0), 0, NULL, 0);
-
- embeddedice_read_reg(dbg_stat);
-
- /* fetch NOP, BX in DECODE stage */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- embeddedice_read_reg(dbg_stat);
-
- /* fetch NOP, BX in EXECUTE stage (1st cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
- /* target is now in Thumb state */
- embeddedice_read_reg(dbg_stat);
-
- /* load r0 value, MOV_IM in Decode*/
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDR_PCREL(0), 0, NULL, 0);
- /* fetch NOP, LDR in Decode, MOV_IM in Execute */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- /* fetch NOP, LDR in Execute */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- /* nothing fetched, LDR in EXECUTE stage (2nd cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, buf_get_u32(armv4_5->core_cache->reg_list[0].value, 0, 32), NULL, 0);
- /* nothing fetched, LDR in EXECUTE stage (3rd cycle) */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
-
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
-
- embeddedice_read_reg(dbg_stat);
-
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7f7), 0, NULL, 1);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
-
-}
-
-void arm9tdmi_enable_single_step(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;
-
- if (arm7_9->has_single_step)
- {
- buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 3, 1, 1);
- embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
- }
- else
- {
- arm7_9_enable_eice_step(target);
- }
-}
-
-void arm9tdmi_disable_single_step(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;
-
- if (arm7_9->has_single_step)
- {
- buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 3, 1, 0);
- embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
- }
- else
- {
- arm7_9_disable_eice_step(target);
- }
-}
-
-void arm9tdmi_build_reg_cache(target_t *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;
- arm7_9_common_t *arm7_9 = armv4_5->arch_info;
- arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
- (*cache_p) = armv4_5_build_reg_cache(target, armv4_5);
- armv4_5->core_cache = (*cache_p);
-
- /* one extra register (vector catch) */
- (*cache_p)->next = embeddedice_build_reg_cache(target, arm7_9);
- arm7_9->eice_cache = (*cache_p)->next;
-
- if (arm7_9->etm_ctx)
- {
- (*cache_p)->next->next = etm_build_reg_cache(target, jtag_info, arm7_9->etm_ctx);
- arm7_9->etm_ctx->reg_cache = (*cache_p)->next->next;
- }
-}
-
-int arm9tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
-{
-
- arm9tdmi_build_reg_cache(target);
-
- return ERROR_OK;
-
-}
-
-int arm9tdmi_quit()
-{
-
- return ERROR_OK;
-}
-
-int arm9tdmi_init_arch_info(target_t *target, arm9tdmi_common_t *arm9tdmi, int chain_pos, char *variant)
-{
- armv4_5_common_t *armv4_5;
- arm7_9_common_t *arm7_9;
-
- arm7_9 = &arm9tdmi->arm7_9_common;
- armv4_5 = &arm7_9->armv4_5_common;
-
- /* prepare JTAG information for the new target */
- arm7_9->jtag_info.chain_pos = chain_pos;
- arm7_9->jtag_info.scann_size = 5;
-
- /* register arch-specific functions */
- arm7_9->examine_debug_reason = arm9tdmi_examine_debug_reason;
- arm7_9->change_to_arm = arm9tdmi_change_to_arm;
- arm7_9->read_core_regs = arm9tdmi_read_core_regs;
- arm7_9->read_core_regs_target_buffer = arm9tdmi_read_core_regs_target_buffer;
- arm7_9->read_xpsr = arm9tdmi_read_xpsr;
-
- arm7_9->write_xpsr = arm9tdmi_write_xpsr;
- arm7_9->write_xpsr_im8 = arm9tdmi_write_xpsr_im8;
- arm7_9->write_core_regs = arm9tdmi_write_core_regs;
-
- arm7_9->load_word_regs = arm9tdmi_load_word_regs;
- arm7_9->load_hword_reg = arm9tdmi_load_hword_reg;
- arm7_9->load_byte_reg = arm9tdmi_load_byte_reg;
-
- arm7_9->store_word_regs = arm9tdmi_store_word_regs;
- arm7_9->store_hword_reg = arm9tdmi_store_hword_reg;
- arm7_9->store_byte_reg = arm9tdmi_store_byte_reg;
-
- arm7_9->write_pc = arm9tdmi_write_pc;
- arm7_9->branch_resume = arm9tdmi_branch_resume;
- arm7_9->branch_resume_thumb = arm9tdmi_branch_resume_thumb;
-
- arm7_9->enable_single_step = arm9tdmi_enable_single_step;
- arm7_9->disable_single_step = arm9tdmi_disable_single_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 = 3;
- arm7_9->arch_info = arm9tdmi;
-
- arm9tdmi->common_magic = ARM9TDMI_COMMON_MAGIC;
- arm9tdmi->arch_info = NULL;
-
- if (variant)
- {
- arm9tdmi->variant = strdup(variant);
- }
- else
- {
- arm9tdmi->variant = strdup("");
- }
-
- arm7_9_init_arch_info(target, arm7_9);
-
- /* override use of DBGRQ, this is safe on ARM9TDMI */
- arm7_9->use_dbgrq = 1;
-
- /* all ARM9s have the vector catch register */
- arm7_9->has_vector_catch = 1;
-
- return ERROR_OK;
-}
-
-int arm9tdmi_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p, arm9tdmi_common_t **arm9tdmi_p)
-{
- armv4_5_common_t *armv4_5 = target->arch_info;
- arm7_9_common_t *arm7_9;
- arm9tdmi_common_t *arm9tdmi;
-
- if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
- {
- return -1;
- }
-
- arm7_9 = armv4_5->arch_info;
- if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
- {
- return -1;
- }
-
- arm9tdmi = arm7_9->arch_info;
- if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)
- {
- return -1;
- }
-
- *armv4_5_p = armv4_5;
- *arm7_9_p = arm7_9;
- *arm9tdmi_p = arm9tdmi;
-
- return ERROR_OK;
-}
-
-
-/* target arm9tdmi <endianess> <startup_mode> <chain_pos> <variant>*/
-int arm9tdmi_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
-{
- int chain_pos;
- char *variant = NULL;
- arm9tdmi_common_t *arm9tdmi = malloc(sizeof(arm9tdmi_common_t));
-
- if (argc < 4)
- {
- ERROR("'target arm9tdmi' requires at least one additional argument");
- exit(-1);
- }
-
- chain_pos = strtoul(args[3], NULL, 0);
-
- if (argc >= 5)
- variant = args[4];
-
- arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
-
- return ERROR_OK;
-}
-
-int arm9tdmi_register_commands(struct command_context_s *cmd_ctx)
-{
- int retval;
-
- command_t *arm9tdmi_cmd;
-
-
- retval = arm7_9_register_commands(cmd_ctx);
-
- arm9tdmi_cmd = register_command(cmd_ctx, NULL, "arm9tdmi", NULL, COMMAND_ANY, "arm9tdmi specific commands");
-
- register_command(cmd_ctx, arm9tdmi_cmd, "vector_catch", handle_arm9tdmi_catch_vectors_command, COMMAND_EXEC, "catch arm920t vectors ['all'|'none'|'<vec1 vec2 ...>']");
-
-
- return ERROR_OK;
-
-}
-
-int handle_arm9tdmi_catch_vectors_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;
- arm7_9_common_t *arm7_9;
- arm9tdmi_common_t *arm9tdmi;
- reg_t *vector_catch;
- u32 vector_catch_value;
- int i, j;
-
- if (arm9tdmi_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi) != ERROR_OK)
- {
- command_print(cmd_ctx, "current target isn't an ARM9TDMI based target");
- return ERROR_OK;
- }
-
- vector_catch = &arm7_9->eice_cache->reg_list[EICE_VEC_CATCH];
-
- /* read the vector catch register if necessary */
- if (!vector_catch->valid)
- embeddedice_read_reg(vector_catch);
-
- /* get the current setting */
- vector_catch_value = buf_get_u32(vector_catch->value, 0, 32);
-
- if (argc > 0)
- {
- vector_catch_value = 0x0;
- if (strcmp(args[0], "all") == 0)
- {
- vector_catch_value = 0xdf;
- }
- else if (strcmp(args[0], "none") == 0)
- {
- /* do nothing */
- }
- else
- {
- for (i = 0; i < argc; i++)
- {
- /* go through list of vectors */
- for(j = 0; arm9tdmi_vectors[j].name; j++)
- {
- if (strcmp(args[i], arm9tdmi_vectors[j].name) == 0)
- {
- vector_catch_value |= arm9tdmi_vectors[j].value;
- break;
- }
- }
-
- /* complain if vector wasn't found */
- if (!arm9tdmi_vectors[j].name)
- {
- command_print(cmd_ctx, "vector '%s' not found, leaving current setting unchanged", args[i]);
-
- /* reread current setting */
- vector_catch_value = buf_get_u32(vector_catch->value, 0, 32);
-
- break;
- }
- }
- }
-
- /* store new settings */
- buf_set_u32(vector_catch->value, 0, 32, vector_catch_value);
- embeddedice_store_reg(vector_catch);
- }
-
- /* output current settings (skip RESERVED vector) */
- for (i = 0; i < 8; i++)
- {
- if (i != 5)
- {
- command_print(cmd_ctx, "%s: %s", arm9tdmi_vectors[i].name,
- (vector_catch_value & (1 << i)) ? "catch" : "don't catch");
- }
- }
-
- return ERROR_OK;
-}
+/***************************************************************************
+ * Copyright (C) 2005 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * 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 *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "arm9tdmi.h"
+
+#include "arm7_9_common.h"
+#include "register.h"
+#include "target.h"
+#include "armv4_5.h"
+#include "embeddedice.h"
+#include "etm.h"
+#include "etb.h"
+#include "log.h"
+#include "jtag.h"
+#include "arm_jtag.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#if 0
+#define _DEBUG_INSTRUCTION_EXECUTION_
+#endif
+
+/* cli handling */
+int arm9tdmi_register_commands(struct command_context_s *cmd_ctx);
+int handle_arm9tdmi_catch_vectors_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+
+/* forward declarations */
+int arm9tdmi_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
+int arm9tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
+int arm9tdmi_quit();
+
+target_type_t arm9tdmi_target =
+{
+ .name = "arm9tdmi",
+
+ .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,
+ .prepare_reset_halt = arm7_9_prepare_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,
+
+ .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 = arm9tdmi_register_commands,
+ .target_command = arm9tdmi_target_command,
+ .init_target = arm9tdmi_init_target,
+ .quit = arm9tdmi_quit
+};
+
+arm9tdmi_vector_t arm9tdmi_vectors[] =
+{
+ {"reset", ARM9TDMI_RESET_VECTOR},
+ {"undef", ARM9TDMI_UNDEF_VECTOR},
+ {"swi", ARM9TDMI_SWI_VECTOR},
+ {"pabt", ARM9TDMI_PABT_VECTOR},
+ {"dabt", ARM9TDMI_DABT_VECTOR},
+ {"reserved", ARM9TDMI_RESERVED_VECTOR},
+ {"irq", ARM9TDMI_IRQ_VECTOR},
+ {"fiq", ARM9TDMI_FIQ_VECTOR},
+ {0, 0},
+};
+
+int arm9tdmi_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[3];
+ u8 databus[4];
+ u8 instructionbus[4];
+ u8 debug_reason;
+
+ jtag_add_end_state(TAP_PD);
+
+ fields[0].device = arm7_9->jtag_info.chain_pos;
+ fields[0].num_bits = 32;
+ fields[0].out_value = NULL;
+ fields[0].out_mask = NULL;
+ fields[0].in_value = databus;
+ 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].num_bits = 3;
+ fields[1].out_value = NULL;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = &debug_reason;
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+ fields[1].in_handler = NULL;
+ fields[1].in_handler_priv = NULL;
+
+ fields[2].device = arm7_9->jtag_info.chain_pos;
+ fields[2].num_bits = 32;
+ fields[2].out_value = NULL;
+ fields[2].out_mask = NULL;
+ fields[2].in_value = instructionbus;
+ fields[2].in_check_value = NULL;
+ fields[2].in_check_mask = NULL;
+ fields[2].in_handler = NULL;
+ fields[2].in_handler_priv = NULL;
+
+ arm_jtag_scann(&arm7_9->jtag_info, 0x1);
+ arm_jtag_set_instr(&arm7_9->jtag_info, arm7_9->jtag_info.intest_instr, NULL);
+
+ jtag_add_dr_scan(3, fields, TAP_PD);
+ jtag_execute_queue();
+
+ fields[0].in_value = NULL;
+ fields[0].out_value = databus;
+ fields[1].in_value = NULL;
+ fields[1].out_value = &debug_reason;
+ fields[2].in_value = NULL;
+ fields[2].out_value = instructionbus;
+
+ jtag_add_dr_scan(3, fields, TAP_PD);
+
+ if (debug_reason & 0x4)
+ if (debug_reason & 0x2)
+ target->debug_reason = DBG_REASON_WPTANDBKPT;
+ else
+ target->debug_reason = DBG_REASON_WATCHPOINT;
+ else
+ target->debug_reason = DBG_REASON_BREAKPOINT;
+ }
+
+ return ERROR_OK;
+}
+
+/* put an instruction in the ARM9TDMI pipeline or write the data bus, and optionally read data */
+int arm9tdmi_clock_out(arm_jtag_t *jtag_info, u32 instr, u32 out, u32 *in, int sysspeed)
+{
+ scan_field_t fields[3];
+ u8 out_buf[4];
+ u8 instr_buf[4];
+ u8 sysspeed_buf = 0x0;
+
+ /* prepare buffer */
+ buf_set_u32(out_buf, 0, 32, out);
+
+ buf_set_u32(instr_buf, 0, 32, flip_u32(instr, 32));
+
+ if (sysspeed)
+ buf_set_u32(&sysspeed_buf, 2, 1, 1);
+
+ jtag_add_end_state(TAP_PD);
+ arm_jtag_scann(jtag_info, 0x1);
+
+ arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+
+ fields[0].device = jtag_info->chain_pos;
+ fields[0].num_bits = 32;
+ fields[0].out_value = out_buf;
+ fields[0].out_mask = NULL;
+ fields[0].in_value = NULL;
+ if (in)
+ {
+ fields[0].in_handler = arm_jtag_buf_to_u32;
+ fields[0].in_handler_priv = in;
+ }
+ else
+ {
+ fields[0].in_handler = NULL;
+ fields[0].in_handler_priv = NULL;
+ }
+ fields[0].in_check_value = NULL;
+ fields[0].in_check_mask = NULL;
+
+ fields[1].device = jtag_info->chain_pos;
+ fields[1].num_bits = 3;
+ fields[1].out_value = &sysspeed_buf;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = NULL;
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+ fields[1].in_handler = NULL;
+ fields[1].in_handler_priv = NULL;
+
+ fields[2].device = jtag_info->chain_pos;
+ fields[2].num_bits = 32;
+ fields[2].out_value = instr_buf;
+ fields[2].out_mask = NULL;
+ fields[2].in_value = NULL;
+ fields[2].in_check_value = NULL;
+ fields[2].in_check_mask = NULL;
+ fields[2].in_handler = NULL;
+ fields[2].in_handler_priv = NULL;
+
+ jtag_add_dr_scan(3, fields, -1);
+
+ jtag_add_runtest(0, -1);
+
+#ifdef _DEBUG_INSTRUCTION_EXECUTION_
+ {
+ jtag_execute_queue();
+
+ if (in)
+ {
+ DEBUG("instr: 0x%8.8x, out: 0x%8.8x, in: 0x%8.8x", instr, out, *in);
+ }
+ else
+ DEBUG("instr: 0x%8.8x, out: 0x%8.8x", instr, out);
+ }
+#endif
+
+ return ERROR_OK;
+}
+
+/* just read data (instruction and data-out = don't care) */
+int arm9tdmi_clock_data_in(arm_jtag_t *jtag_info, u32 *in)
+{
+ scan_field_t fields[3];
+
+ jtag_add_end_state(TAP_PD);
+ arm_jtag_scann(jtag_info, 0x1);
+
+ arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+
+ fields[0].device = jtag_info->chain_pos;
+ fields[0].num_bits = 32;
+ fields[0].out_value = NULL;
+ fields[0].out_mask = NULL;
+ fields[0].in_value = NULL;
+ fields[0].in_handler = arm_jtag_buf_to_u32;
+ fields[0].in_handler_priv = in;
+ fields[0].in_check_value = NULL;
+ fields[0].in_check_mask = NULL;
+
+ fields[1].device = jtag_info->chain_pos;
+ fields[1].num_bits = 3;
+ fields[1].out_value = NULL;
+ fields[1].out_mask = NULL;
+ 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;
+
+ fields[2].device = jtag_info->chain_pos;
+ fields[2].num_bits = 32;
+ fields[2].out_value = NULL;
+ fields[2].out_mask = NULL;
+ fields[2].in_value = NULL;
+ fields[2].in_check_value = NULL;
+ fields[2].in_check_mask = NULL;
+ fields[2].in_handler = NULL;
+ fields[2].in_handler_priv = NULL;
+
+ jtag_add_dr_scan(3, 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
+
+ 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 arm9tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size, int be)
+{
+ scan_field_t fields[3];
+
+ jtag_add_end_state(TAP_PD);
+ arm_jtag_scann(jtag_info, 0x1);
+
+ arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+
+ fields[0].device = jtag_info->chain_pos;
+ fields[0].num_bits = 32;
+ fields[0].out_value = NULL;
+ fields[0].out_mask = NULL;
+ fields[0].in_value = NULL;
+ switch (size)
+ {
+ case 4:
+ fields[0].in_handler = (be) ? arm_jtag_buf_to_be32 : arm_jtag_buf_to_le32;
+ break;
+ case 2:
+ fields[0].in_handler = (be) ? arm_jtag_buf_to_be16 : arm_jtag_buf_to_le16;
+ break;
+ case 1:
+ fields[0].in_handler = arm_jtag_buf_to_8;
+ break;
+ }
+ fields[0].in_handler_priv = in;
+ fields[0].in_check_value = NULL;
+ fields[0].in_check_mask = NULL;
+
+ fields[1].device = jtag_info->chain_pos;
+ fields[1].num_bits = 3;
+ fields[1].out_value = NULL;
+ fields[1].out_mask = NULL;
+ 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;
+
+ fields[2].device = jtag_info->chain_pos;
+ fields[2].num_bits = 32;
+ fields[2].out_value = NULL;
+ fields[2].out_mask = NULL;
+ fields[2].in_value = NULL;
+ fields[2].in_check_value = NULL;
+ fields[2].in_check_mask = NULL;
+ fields[2].in_handler = NULL;
+ fields[2].in_handler_priv = NULL;
+
+ jtag_add_dr_scan(3, 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
+
+ return ERROR_OK;
+}
+
+void arm9tdmi_change_to_arm(target_t *target, u32 *r0, u32 *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
+ * to allow common handling of ARM and THUMB debugging */
+
+ /* fetch STR r0, [r0] */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* STR r0, [r0] in Memory */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, r0, 0);
+
+ /* MOV r0, r15 fetched, STR in Decode */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_MOV(0, 15), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* nothing fetched, STR r0, [r0] in Memory */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, pc, 0);
+
+ /* use pc-relative LDR to clear r0[1:0] (for switch to ARM mode) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDR_PCREL(0), 0, NULL, 0);
+ /* LDR in Decode */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* LDR in Execute */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* LDR in Memory (to account for interlock) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+
+ /* fetch BX */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_BX(0), 0, NULL, 0);
+ /* NOP fetched, BX in Decode, MOV in Execute */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* NOP fetched, BX in Execute (1) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+
+ jtag_execute_queue();
+
+ /* fix program counter:
+ * MOV r0, r15 was the 5th instruction (+8)
+ * reading PC in Thumb state gives address of instruction + 4
+ */
+ *pc -= 0xc;
+}
+
+void arm9tdmi_read_core_regs(target_t *target, u32 mask, u32* 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;
+
+ /* STMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, STM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ for (i = 0; i <= 15; i++)
+ {
+ if (mask & (1 << i))
+ /* nothing fetched, STM in MEMORY (i'th cycle) */
+ arm9tdmi_clock_data_in(jtag_info, core_regs[i]);
+ }
+
+}
+
+void arm9tdmi_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
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, STM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ for (i = 0; i <= 15; i++)
+ {
+ if (mask & (1 << i))
+ /* nothing fetched, STM in MEMORY (i'th cycle) */
+ switch (size)
+ {
+ case 4:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u32++, 4, be);
+ break;
+ case 2:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u16++, 2, be);
+ break;
+ case 1:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u8++, 1, be);
+ break;
+ }
+ }
+
+}
+
+void arm9tdmi_read_xpsr(target_t *target, u32 *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;
+
+ /* MRS r0, cpsr */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MRS(0, spsr & 1), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ /* STR r0, [r15] */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STR(0, 15), 0, NULL, 0);
+ /* fetch NOP, STR in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STR in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, STR in MEMORY */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, xpsr, 0);
+
+}
+
+void arm9tdmi_write_xpsr(target_t *target, u32 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;
+
+ DEBUG("xpsr: %8.8x, spsr: %i", xpsr, spsr);
+
+ /* MSR1 fetched */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr & 0xff, 0, 1, spsr), 0, NULL, 0);
+ /* MSR2 fetched, MSR1 in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff00) >> 8, 0xc, 2, spsr), 0, NULL, 0);
+ /* MSR3 fetched, MSR1 in EXECUTE (1), MSR2 in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff0000) >> 16, 0x8, 4, spsr), 0, NULL, 0);
+ /* nothing fetched, MSR1 in EXECUTE (2) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR1 in EXECUTE (3) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* MSR4 fetched, MSR2 in EXECUTE (1), MSR3 in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM((xpsr & 0xff000000) >> 24, 0x4, 8, spsr), 0, NULL, 0);
+ /* nothing fetched, MSR2 in EXECUTE (2) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR2 in EXECUTE (3) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* NOP fetched, MSR3 in EXECUTE (1), MSR4 in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR3 in EXECUTE (2) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR3 in EXECUTE (3) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* NOP fetched, MSR4 in EXECUTE (1) */
+ /* last MSR writes flags, which takes only one cycle */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+}
+
+void arm9tdmi_write_xpsr_im8(target_t *target, u8 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;
+
+ DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
+
+ /* MSR fetched */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr_im, rot, 1, spsr), 0, NULL, 0);
+ /* NOP fetched, MSR in DECODE */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* NOP fetched, MSR in EXECUTE (1) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ /* rot == 4 writes flags, which takes only one cycle */
+ if (rot != 4)
+ {
+ /* nothing fetched, MSR in EXECUTE (2) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, MSR in EXECUTE (3) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ }
+}
+
+void arm9tdmi_write_core_regs(target_t *target, u32 mask, u32 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;
+
+ /* LDMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, LDM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ for (i = 0; i <= 15; i++)
+ {
+ if (mask & (1 << i))
+ /* nothing fetched, LDM still in EXECUTE (1+i cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, core_regs[i], NULL, 0);
+ }
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+}
+
+void arm9tdmi_load_word_regs(target_t *target, u32 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;
+
+ /* put system-speed load-multiple into the pipeline */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 1), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
+
+}
+
+void arm9tdmi_load_hword_reg(target_t *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;
+
+ /* put system-speed load half-word into the pipeline */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_LDRH_IP(num, 0), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
+}
+
+void arm9tdmi_load_byte_reg(target_t *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;
+
+ /* put system-speed load byte into the pipeline */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_LDRB_IP(num, 0), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
+
+}
+
+void arm9tdmi_store_word_regs(target_t *target, u32 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;
+
+ /* put system-speed store-multiple into the pipeline */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask, 0, 1), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
+
+}
+
+void arm9tdmi_store_hword_reg(target_t *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;
+
+ /* put system-speed store half-word into the pipeline */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STRH_IP(num, 0), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
+
+}
+
+void arm9tdmi_store_byte_reg(target_t *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;
+
+ /* put system-speed store byte into the pipeline */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STRB_IP(num, 0), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
+
+}
+
+void arm9tdmi_write_pc(target_t *target, u32 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;
+
+ /* LDMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, 0x8000, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, LDM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, LDM in EXECUTE stage (2nd cycle) (output data) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, pc, NULL, 0);
+ /* nothing fetched, LDM in EXECUTE stage (3rd cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (4th cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (5th cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+}
+
+void arm9tdmi_branch_resume(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;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_B(0xfffffc, 0), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
+
+}
+
+void arm9tdmi_branch_resume_thumb(target_t *target)
+{
+ 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 r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, 0x1, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, LDM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, LDM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* nothing fetched, LDM in EXECUTE stage (2nd cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32) | 1, NULL, 0);
+ /* nothing fetched, LDM in EXECUTE stage (3rd cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ /* Branch and eXchange */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_BX(0), 0, NULL, 0);
+
+ embeddedice_read_reg(dbg_stat);
+
+ /* fetch NOP, BX in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ embeddedice_read_reg(dbg_stat);
+
+ /* fetch NOP, BX in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+
+ /* target is now in Thumb state */
+ embeddedice_read_reg(dbg_stat);
+
+ /* load r0 value, MOV_IM in Decode*/
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDR_PCREL(0), 0, NULL, 0);
+ /* fetch NOP, LDR in Decode, MOV_IM in Execute */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* fetch NOP, LDR in Execute */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* nothing fetched, LDR in EXECUTE stage (2nd cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, buf_get_u32(armv4_5->core_cache->reg_list[0].value, 0, 32), NULL, 0);
+ /* nothing fetched, LDR in EXECUTE stage (3rd cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+
+ embeddedice_read_reg(dbg_stat);
+
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7f7), 0, NULL, 1);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+
+}
+
+void arm9tdmi_enable_single_step(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;
+
+ if (arm7_9->has_single_step)
+ {
+ buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 3, 1, 1);
+ embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
+ }
+ else
+ {
+ arm7_9_enable_eice_step(target);
+ }
+}
+
+void arm9tdmi_disable_single_step(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;
+
+ if (arm7_9->has_single_step)
+ {
+ buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 3, 1, 0);
+ embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
+ }
+ else
+ {
+ arm7_9_disable_eice_step(target);
+ }
+}
+
+void arm9tdmi_build_reg_cache(target_t *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;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+
+ (*cache_p) = armv4_5_build_reg_cache(target, armv4_5);
+ armv4_5->core_cache = (*cache_p);
+
+ /* one extra register (vector catch) */
+ (*cache_p)->next = embeddedice_build_reg_cache(target, arm7_9);
+ arm7_9->eice_cache = (*cache_p)->next;
+
+ if (arm7_9->etm_ctx)
+ {
+ (*cache_p)->next->next = etm_build_reg_cache(target, jtag_info, arm7_9->etm_ctx);
+ arm7_9->etm_ctx->reg_cache = (*cache_p)->next->next;
+ }
+}
+
+int arm9tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
+{
+
+ arm9tdmi_build_reg_cache(target);
+
+ return ERROR_OK;
+
+}
+
+int arm9tdmi_quit()
+{
+
+ return ERROR_OK;
+}
+
+int arm9tdmi_init_arch_info(target_t *target, arm9tdmi_common_t *arm9tdmi, int chain_pos, char *variant)
+{
+ armv4_5_common_t *armv4_5;
+ arm7_9_common_t *arm7_9;
+
+ arm7_9 = &arm9tdmi->arm7_9_common;
+ armv4_5 = &arm7_9->armv4_5_common;
+
+ /* prepare JTAG information for the new target */
+ arm7_9->jtag_info.chain_pos = chain_pos;
+ arm7_9->jtag_info.scann_size = 5;
+
+ /* register arch-specific functions */
+ arm7_9->examine_debug_reason = arm9tdmi_examine_debug_reason;
+ arm7_9->change_to_arm = arm9tdmi_change_to_arm;
+ arm7_9->read_core_regs = arm9tdmi_read_core_regs;
+ arm7_9->read_core_regs_target_buffer = arm9tdmi_read_core_regs_target_buffer;
+ arm7_9->read_xpsr = arm9tdmi_read_xpsr;
+
+ arm7_9->write_xpsr = arm9tdmi_write_xpsr;
+ arm7_9->write_xpsr_im8 = arm9tdmi_write_xpsr_im8;
+ arm7_9->write_core_regs = arm9tdmi_write_core_regs;
+
+ arm7_9->load_word_regs = arm9tdmi_load_word_regs;
+ arm7_9->load_hword_reg = arm9tdmi_load_hword_reg;
+ arm7_9->load_byte_reg = arm9tdmi_load_byte_reg;
+
+ arm7_9->store_word_regs = arm9tdmi_store_word_regs;
+ arm7_9->store_hword_reg = arm9tdmi_store_hword_reg;
+ arm7_9->store_byte_reg = arm9tdmi_store_byte_reg;
+
+ arm7_9->write_pc = arm9tdmi_write_pc;
+ arm7_9->branch_resume = arm9tdmi_branch_resume;
+ arm7_9->branch_resume_thumb = arm9tdmi_branch_resume_thumb;
+
+ arm7_9->enable_single_step = arm9tdmi_enable_single_step;
+ arm7_9->disable_single_step = arm9tdmi_disable_single_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 = 3;
+ arm7_9->arch_info = arm9tdmi;
+
+ arm9tdmi->common_magic = ARM9TDMI_COMMON_MAGIC;
+ arm9tdmi->arch_info = NULL;
+
+ if (variant)
+ {
+ arm9tdmi->variant = strdup(variant);
+ }
+ else
+ {
+ arm9tdmi->variant = strdup("");
+ }
+
+ arm7_9_init_arch_info(target, arm7_9);
+
+ /* override use of DBGRQ, this is safe on ARM9TDMI */
+ arm7_9->use_dbgrq = 1;
+
+ /* all ARM9s have the vector catch register */
+ arm7_9->has_vector_catch = 1;
+
+ return ERROR_OK;
+}
+
+int arm9tdmi_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p, arm9tdmi_common_t **arm9tdmi_p)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+
+ if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ arm7_9 = armv4_5->arch_info;
+ if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ arm9tdmi = arm7_9->arch_info;
+ if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ *armv4_5_p = armv4_5;
+ *arm7_9_p = arm7_9;
+ *arm9tdmi_p = arm9tdmi;
+
+ return ERROR_OK;
+}
+
+
+/* target arm9tdmi <endianess> <startup_mode> <chain_pos> <variant>*/
+int arm9tdmi_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
+{
+ int chain_pos;
+ char *variant = NULL;
+ arm9tdmi_common_t *arm9tdmi = malloc(sizeof(arm9tdmi_common_t));
+
+ if (argc < 4)
+ {
+ ERROR("'target arm9tdmi' requires at least one additional argument");
+ exit(-1);
+ }
+
+ chain_pos = strtoul(args[3], NULL, 0);
+
+ if (argc >= 5)
+ variant = args[4];
+
+ arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
+
+ return ERROR_OK;
+}
+
+int arm9tdmi_register_commands(struct command_context_s *cmd_ctx)
+{
+ int retval;
+
+ command_t *arm9tdmi_cmd;
+
+
+ retval = arm7_9_register_commands(cmd_ctx);
+
+ arm9tdmi_cmd = register_command(cmd_ctx, NULL, "arm9tdmi", NULL, COMMAND_ANY, "arm9tdmi specific commands");
+
+ register_command(cmd_ctx, arm9tdmi_cmd, "vector_catch", handle_arm9tdmi_catch_vectors_command, COMMAND_EXEC, "catch arm920t vectors ['all'|'none'|'<vec1 vec2 ...>']");
+
+
+ return ERROR_OK;
+
+}
+
+int handle_arm9tdmi_catch_vectors_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;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ reg_t *vector_catch;
+ u32 vector_catch_value;
+ int i, j;
+
+ if (arm9tdmi_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "current target isn't an ARM9TDMI based target");
+ return ERROR_OK;
+ }
+
+ vector_catch = &arm7_9->eice_cache->reg_list[EICE_VEC_CATCH];
+
+ /* read the vector catch register if necessary */
+ if (!vector_catch->valid)
+ embeddedice_read_reg(vector_catch);
+
+ /* get the current setting */
+ vector_catch_value = buf_get_u32(vector_catch->value, 0, 32);
+
+ if (argc > 0)
+ {
+ vector_catch_value = 0x0;
+ if (strcmp(args[0], "all") == 0)
+ {
+ vector_catch_value = 0xdf;
+ }
+ else if (strcmp(args[0], "none") == 0)
+ {
+ /* do nothing */
+ }
+ else
+ {
+ for (i = 0; i < argc; i++)
+ {
+ /* go through list of vectors */
+ for(j = 0; arm9tdmi_vectors[j].name; j++)
+ {
+ if (strcmp(args[i], arm9tdmi_vectors[j].name) == 0)
+ {
+ vector_catch_value |= arm9tdmi_vectors[j].value;
+ break;
+ }
+ }
+
+ /* complain if vector wasn't found */
+ if (!arm9tdmi_vectors[j].name)
+ {
+ command_print(cmd_ctx, "vector '%s' not found, leaving current setting unchanged", args[i]);
+
+ /* reread current setting */
+ vector_catch_value = buf_get_u32(vector_catch->value, 0, 32);
+
+ break;
+ }
+ }
+ }
+
+ /* store new settings */
+ buf_set_u32(vector_catch->value, 0, 32, vector_catch_value);
+ embeddedice_store_reg(vector_catch);
+ }
+
+ /* output current settings (skip RESERVED vector) */
+ for (i = 0; i < 8; i++)
+ {
+ if (i != 5)
+ {
+ command_print(cmd_ctx, "%s: %s", arm9tdmi_vectors[i].name,
+ (vector_catch_value & (1 << i)) ? "catch" : "don't catch");
+ }
+ }
+
+ return ERROR_OK;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-03 03:20:48 +0000