command_handler: change to 'argc' to CMD_ARGC
[fw/openocd] / src / target / arm9tdmi.c
index 12b68ae5645fcc7476d28c5639702a8c5c367101..b582eae3319ea3cff8efe2d4a29a1965c64d623b 100644 (file)
@@ -29,6 +29,7 @@
 
 #include "arm9tdmi.h"
 #include "target_type.h"
+#include "register.h"
 
 
 /*
 #define _DEBUG_INSTRUCTION_EXECUTION_
 #endif
 
-/* forward declarations */
-static int arm9tdmi_target_create(struct target_s *target, Jim_Interp *interp);
-static int arm9tdmi_quit(void);
-
-target_type_t arm9tdmi_target =
+enum arm9tdmi_vector_bit
 {
-       .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,
-
-       .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 = arm9tdmi_register_commands,
-       .target_create = arm9tdmi_target_create,
-       .init_target = arm9tdmi_init_target,
-       .examine = arm9tdmi_examine,
-       .quit = arm9tdmi_quit
+       ARM9TDMI_RESET_VECTOR = 0x01,
+       ARM9TDMI_UNDEF_VECTOR = 0x02,
+       ARM9TDMI_SWI_VECTOR = 0x04,
+       ARM9TDMI_PABT_VECTOR = 0x08,
+       ARM9TDMI_DABT_VECTOR = 0x10,
+       /* BIT(5) reserved -- must be zero */
+       ARM9TDMI_IRQ_VECTOR = 0x40,
+       ARM9TDMI_FIQ_VECTOR = 0x80,
 };
 
-static arm9tdmi_vector_t arm9tdmi_vectors[] =
-{
+static const struct arm9tdmi_vector {
+       char *name;
+       uint32_t value;
+} arm9tdmi_vectors[] = {
        {"reset", ARM9TDMI_RESET_VECTOR},
        {"undef", ARM9TDMI_UNDEF_VECTOR},
        {"swi", ARM9TDMI_SWI_VECTOR},
@@ -100,18 +72,16 @@ static arm9tdmi_vector_t arm9tdmi_vectors[] =
        {0, 0},
 };
 
-int arm9tdmi_examine_debug_reason(target_t *target)
+int arm9tdmi_examine_debug_reason(struct target *target)
 {
        int retval = ERROR_OK;
-       /* 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;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
 
        /* 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];
+               struct scan_field fields[3];
                uint8_t databus[4];
                uint8_t instructionbus[4];
                uint8_t debug_reason;
@@ -166,11 +136,14 @@ int arm9tdmi_examine_debug_reason(target_t *target)
        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, uint32_t instr, uint32_t out, uint32_t *in, int sysspeed)
+/* put an instruction in the ARM9TDMI pipeline or write the data bus,
+ * and optionally read data
+ */
+int arm9tdmi_clock_out(struct arm_jtag *jtag_info, uint32_t instr,
+               uint32_t out, uint32_t *in, int sysspeed)
 {
        int retval = ERROR_OK;
-       scan_field_t fields[3];
+       struct scan_field fields[3];
        uint8_t out_buf[4];
        uint8_t instr_buf[4];
        uint8_t sysspeed_buf = 0x0;
@@ -240,10 +213,10 @@ int arm9tdmi_clock_out(arm_jtag_t *jtag_info, uint32_t instr, uint32_t out, uint
 }
 
 /* just read data (instruction and data-out = don't care) */
-int arm9tdmi_clock_data_in(arm_jtag_t *jtag_info, uint32_t *in)
+int arm9tdmi_clock_data_in(struct arm_jtag *jtag_info, uint32_t *in)
 {
        int retval = ERROR_OK;;
-       scan_field_t fields[3];
+       struct scan_field fields[3];
 
        jtag_set_end_state(TAP_DRPAUSE);
        if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
@@ -297,9 +270,12 @@ int arm9tdmi_clock_data_in(arm_jtag_t *jtag_info, uint32_t *in)
 
 extern void arm_endianness(uint8_t *tmp, void *in, int size, int be, int flip);
 
-static int arm9endianness(jtag_callback_data_t arg, jtag_callback_data_t size, jtag_callback_data_t be, jtag_callback_data_t captured)
+static int arm9endianness(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;
+       uint8_t *in = (uint8_t *)arg;
+
        arm_endianness((uint8_t *)captured, in, (int)size, (int)be, 0);
        return ERROR_OK;
 }
@@ -308,10 +284,11 @@ static int arm9endianness(jtag_callback_data_t arg, jtag_callback_data_t size, j
  * 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)
+int arm9tdmi_clock_data_in_endianness(struct arm_jtag *jtag_info,
+               void *in, int size, int be)
 {
        int retval = ERROR_OK;
-       scan_field_t fields[3];
+       struct scan_field fields[3];
 
        jtag_set_end_state(TAP_DRPAUSE);
        if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
@@ -363,14 +340,12 @@ int arm9tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size,
        return ERROR_OK;
 }
 
-static void arm9tdmi_change_to_arm(target_t *target,
+static void arm9tdmi_change_to_arm(struct target *target,
                uint32_t *r0, uint32_t *pc)
 {
        int retval = ERROR_OK;
-       /* 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;
 
        /* save r0 before using it and put system in ARM state
         * to allow common handling of ARM and THUMB debugging */
@@ -419,13 +394,12 @@ static void arm9tdmi_change_to_arm(target_t *target,
        *pc -= 0xc;
 }
 
-void arm9tdmi_read_core_regs(target_t *target, uint32_t mask, uint32_t* core_regs[16])
+void arm9tdmi_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
@@ -445,14 +419,12 @@ void arm9tdmi_read_core_regs(target_t *target, uint32_t mask, uint32_t* core_reg
        }
 }
 
-static void arm9tdmi_read_core_regs_target_buffer(target_t *target,
+static void arm9tdmi_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;
        uint32_t *buf_u32 = buffer;
        uint16_t *buf_u16 = buffer;
@@ -487,12 +459,10 @@ static void arm9tdmi_read_core_regs_target_buffer(target_t *target,
        }
 }
 
-static void arm9tdmi_read_xpsr(target_t *target, uint32_t *xpsr, int spsr)
+static void arm9tdmi_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 */
        arm9tdmi_clock_out(jtag_info, ARMV4_5_MRS(0, spsr & 1), 0, NULL, 0);
@@ -511,12 +481,10 @@ static void arm9tdmi_read_xpsr(target_t *target, uint32_t *xpsr, int spsr)
        arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, xpsr, 0);
 }
 
-static void arm9tdmi_write_xpsr(target_t *target, uint32_t xpsr, int spsr)
+static void arm9tdmi_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;
+       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);
 
@@ -547,13 +515,11 @@ static void arm9tdmi_write_xpsr(target_t *target, uint32_t xpsr, int spsr)
        arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
 }
 
-static void arm9tdmi_write_xpsr_im8(target_t *target,
+static void arm9tdmi_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);
 
@@ -574,13 +540,12 @@ static void arm9tdmi_write_xpsr_im8(target_t *target,
        }
 }
 
-void arm9tdmi_write_core_regs(target_t *target, uint32_t mask, uint32_t core_regs[16])
+void arm9tdmi_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
@@ -601,84 +566,70 @@ void arm9tdmi_write_core_regs(target_t *target, uint32_t mask, uint32_t core_reg
        arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
 }
 
-void arm9tdmi_load_word_regs(target_t *target, uint32_t mask)
+void arm9tdmi_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 */
        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)
+void arm9tdmi_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 */
        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)
+void arm9tdmi_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 */
        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, uint32_t mask)
+void arm9tdmi_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 */
        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)
+void arm9tdmi_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 */
        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)
+void arm9tdmi_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 */
        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);
 }
 
-static void arm9tdmi_write_pc(target_t *target, uint32_t pc)
+static void arm9tdmi_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
@@ -699,26 +650,23 @@ static void arm9tdmi_write_pc(target_t *target, uint32_t pc)
        arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
 }
 
-void arm9tdmi_branch_resume(target_t *target)
+void arm9tdmi_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;
 
        arm9tdmi_clock_out(jtag_info, ARMV4_5_B(0xfffffc, 0), 0, NULL, 0);
        arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
 }
 
-static void arm9tdmi_branch_resume_thumb(target_t *target)
+static void arm9tdmi_branch_resume_thumb(struct target *target)
 {
        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];
+       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];
 
        /* LDMIA r0-15, [r0] at debug speed
        * register values will start to appear on 4th DCLK
@@ -770,11 +718,9 @@ static void arm9tdmi_branch_resume_thumb(target_t *target)
        arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
 }
 
-void arm9tdmi_enable_single_step(target_t *target, uint32_t next_pc)
+void arm9tdmi_enable_single_step(struct target *target, uint32_t next_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;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
 
        if (arm7_9->has_single_step)
        {
@@ -787,11 +733,9 @@ void arm9tdmi_enable_single_step(target_t *target, uint32_t next_pc)
        }
 }
 
-void arm9tdmi_disable_single_step(target_t *target)
+void arm9tdmi_disable_single_step(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;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
 
        if (arm7_9->has_single_step)
        {
@@ -804,74 +748,25 @@ void arm9tdmi_disable_single_step(target_t *target)
        }
 }
 
-static void arm9tdmi_build_reg_cache(target_t *target)
+static void arm9tdmi_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 arm9tdmi_examine(struct target_s *target)
-{
-       /* get pointers to arch-specific information */
-       int retval;
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       if (!target_was_examined(target))
-       {
-               reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
-               reg_cache_t *t;
-               /* one extra register (vector catch) */
-               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_set_examined(target);
-       }
-       if ((retval = embeddedice_setup(target)) != ERROR_OK)
-               return retval;
-       if ((retval = arm7_9_setup(target)) != ERROR_OK)
-               return retval;
-       if (arm7_9->etm_ctx)
-       {
-               if ((retval = etm_setup(target)) != ERROR_OK)
-                       return retval;
-       }
-       return ERROR_OK;
-}
-
-int arm9tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
+int arm9tdmi_init_target(struct command_context *cmd_ctx,
+               struct target *target)
 {
-
        arm9tdmi_build_reg_cache(target);
-
        return ERROR_OK;
 }
 
-static int arm9tdmi_quit(void)
+int arm9tdmi_init_arch_info(struct target *target,
+               struct arm7_9_common *arm7_9, struct jtag_tap *tap)
 {
-       return ERROR_OK;
-}
-
-int arm9tdmi_init_arch_info(target_t *target, arm9tdmi_common_t *arm9tdmi, jtag_tap_t *tap)
-{
-       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.tap = tap;
        arm7_9->jtag_info.scann_size = 5;
@@ -902,7 +797,6 @@ int arm9tdmi_init_arch_info(target_t *target, arm9tdmi_common_t *arm9tdmi, jtag_
        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;
@@ -913,10 +807,6 @@ int arm9tdmi_init_arch_info(target_t *target, arm9tdmi_common_t *arm9tdmi, jtag_
        arm7_9->thumb_bkpt = 0xdeee;
 
        arm7_9->dbgreq_adjust_pc = 3;
-       arm7_9->arch_info = arm9tdmi;
-
-       arm9tdmi->common_magic = ARM9TDMI_COMMON_MAGIC;
-       arm9tdmi->arch_info = NULL;
 
        arm7_9_init_arch_info(target, arm7_9);
 
@@ -929,63 +819,29 @@ int arm9tdmi_init_arch_info(target_t *target, arm9tdmi_common_t *arm9tdmi, jtag_
        return ERROR_OK;
 }
 
-static 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;
-}
-
-static int arm9tdmi_target_create(struct target_s *target, Jim_Interp *interp)
+static int arm9tdmi_target_create(struct target *target, Jim_Interp *interp)
 {
-       arm9tdmi_common_t *arm9tdmi = calloc(1,sizeof(arm9tdmi_common_t));
+       struct arm7_9_common *arm7_9 = calloc(1,sizeof(struct arm7_9_common));
 
-       arm9tdmi_init_arch_info(target, arm9tdmi, target->tap);
-       arm9tdmi->arm7_9_common.armv4_5_common.is_armv4 = true;
+       arm9tdmi_init_arch_info(target, arm7_9, target->tap);
+       arm7_9->armv4_5_common.is_armv4 = true;
 
        return ERROR_OK;
 }
 
-static int handle_arm9tdmi_catch_vectors_command(
-       struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_arm9tdmi_catch_vectors_command)
 {
-       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;
+       struct target *target = get_current_target(cmd_ctx);
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct reg *vector_catch;
        uint32_t 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 ARM9 based target");
-               return ERROR_OK;
+       /* it's uncommon, but some ARM7 chips can support this */
+       if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC
+                       || !arm7_9->has_vector_catch) {
+               command_print(cmd_ctx, "target doesn't have EmbeddedICE "
+                               "with vector_catch");
+               return ERROR_TARGET_INVALID;
        }
 
        vector_catch = &arm7_9->eice_cache->reg_list[EICE_VEC_CATCH];
@@ -997,7 +853,7 @@ static int handle_arm9tdmi_catch_vectors_command(
        /* get the current setting */
        vector_catch_value = buf_get_u32(vector_catch->value, 0, 8);
 
-       if (argc > 0)
+       if (CMD_ARGC > 0)
        {
                vector_catch_value = 0x0;
                if (strcmp(args[0], "all") == 0)
@@ -1010,9 +866,10 @@ static int handle_arm9tdmi_catch_vectors_command(
                }
                else
                {
-                       for (i = 0; i < argc; i++)
+                       for (unsigned i = 0; i < CMD_ARGC; i++)
                        {
                                /* go through list of vectors */
+                               unsigned j;
                                for (j = 0; arm9tdmi_vectors[j].name; j++)
                                {
                                        if (strcmp(args[i], arm9tdmi_vectors[j].name) == 0)
@@ -1042,34 +899,68 @@ static int handle_arm9tdmi_catch_vectors_command(
                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");
-               }
+       /* output current settings */
+       for (unsigned i = 0; arm9tdmi_vectors[i].name; i++) {
+               command_print(cmd_ctx, "%s: %s", arm9tdmi_vectors[i].name,
+                       (vector_catch_value & arm9tdmi_vectors[i].value)
+                               ? "catch" : "don't catch");
        }
 
        return ERROR_OK;
 }
 
-int arm9tdmi_register_commands(struct command_context_s *cmd_ctx)
+int arm9tdmi_register_commands(struct command_context *cmd_ctx)
 {
        int retval;
-       command_t *arm9tdmi_cmd;
+       struct command *arm9tdmi_cmd;
 
        retval = arm7_9_register_commands(cmd_ctx);
-       arm9tdmi_cmd = register_command(cmd_ctx, NULL, "arm9tdmi",
+       arm9tdmi_cmd = register_command(cmd_ctx, NULL, "arm9",
                        NULL, COMMAND_ANY,
-                       "arm9tdmi specific commands");
+                       "arm9 specific commands");
        register_command(cmd_ctx, arm9tdmi_cmd, "vector_catch",
                        handle_arm9tdmi_catch_vectors_command, COMMAND_EXEC,
-                       "arm9 vector_catch [all|none|reset|undef|swi|pabt|dabt|irq|fiq] - separate vectors to catch by space");
-
-
+                       "arm9 vector_catch [all|none|reset|undef|swi|pabt|dabt|irq|fiq] ...");
 
        return retval;
 }
 
+/** Holds methods for ARM9TDMI targets. */
+struct target_type 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,
+
+       .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 = arm_checksum_memory,
+       .blank_check_memory = arm_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 = arm9tdmi_register_commands,
+       .target_create = arm9tdmi_target_create,
+       .init_target = arm9tdmi_init_target,
+       .examine = arm7_9_examine,
+};