target_t -> struct target
[fw/openocd] / src / target / arm7tdmi.c
index ba533a41ee136c80db1a0618faef420a0534497f..c4cda7de1780b66e763c7d6d69e10be6488bb372 100644 (file)
@@ -5,7 +5,7 @@
  *   Copyright (C) 2008 by Spencer Oliver                                  *
  *   spen@spen-soft.co.uk                                                  *
  *                                                                         *
- *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
+ *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
  *   oyvind.harboe@zylin.com                                               *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
 #include "target_type.h"
 
 
+/*
+ * For information about ARM7TDMI, see ARM DDI 0210C (r4p1)
+ * or ARM DDI 0029G (r3).  "Debug In Depth", Appendix B,
+ * covers JTAG support.
+ */
+
 #if 0
 #define _DEBUG_INSTRUCTION_EXECUTION_
 #endif
 
-/* forward declarations */
-
-int arm7tdmi_target_create(struct target_s *target,Jim_Interp *interp);
-int arm7tdmi_quit(void);
-
-/* target function declarations */
-int arm7tdmi_poll(struct target_s *target);
-int arm7tdmi_halt(target_t *target);
-
-target_type_t arm7tdmi_target =
-{
-       .name = "arm7tdmi",
-
-       .poll = arm7_9_poll,
-       .arch_state = armv4_5_arch_state,
-
-       .target_request_data = arm7_9_target_request_data,
-
-       .halt = arm7_9_halt,
-       .resume = arm7_9_resume,
-       .step = arm7_9_step,
-
-       .assert_reset = arm7_9_assert_reset,
-       .deassert_reset = arm7_9_deassert_reset,
-       .soft_reset_halt = arm7_9_soft_reset_halt,
-
-       .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
-
-       .read_memory = arm7_9_read_memory,
-       .write_memory = arm7_9_write_memory,
-       .bulk_write_memory = arm7_9_bulk_write_memory,
-       .checksum_memory = arm7_9_checksum_memory,
-       .blank_check_memory = arm7_9_blank_check_memory,
-
-       .run_algorithm = armv4_5_run_algorithm,
-
-       .add_breakpoint = arm7_9_add_breakpoint,
-       .remove_breakpoint = arm7_9_remove_breakpoint,
-       .add_watchpoint = arm7_9_add_watchpoint,
-       .remove_watchpoint = arm7_9_remove_watchpoint,
-
-       .register_commands  = arm7tdmi_register_commands,
-       .target_create  = arm7tdmi_target_create,
-       .init_target = arm7tdmi_init_target,
-       .examine = arm7tdmi_examine,
-       .quit = arm7tdmi_quit
-};
-
-int arm7tdmi_examine_debug_reason(target_t *target)
+static int arm7tdmi_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[2];
+               struct scan_field fields[2];
                uint8_t databus[4];
                uint8_t breakpoint;
 
@@ -138,8 +94,9 @@ int arm7tdmi_examine_debug_reason(target_t *target)
        return ERROR_OK;
 }
 
-static int arm7tdmi_num_bits[]={1, 32};
-static __inline int arm7tdmi_clock_out_inner(arm_jtag_t *jtag_info, uint32_t out, int breakpoint)
+static const int arm7tdmi_num_bits[] = {1, 32};
+
+static __inline int arm7tdmi_clock_out_inner(struct arm_jtag *jtag_info, uint32_t out, int breakpoint)
 {
        uint32_t values[2]={breakpoint, flip_u32(out, 32)};
 
@@ -154,8 +111,13 @@ static __inline int arm7tdmi_clock_out_inner(arm_jtag_t *jtag_info, uint32_t out
        return ERROR_OK;
 }
 
-/* put an instruction in the ARM7TDMI pipeline or write the data bus, and optionally read data */
-static __inline int arm7tdmi_clock_out(arm_jtag_t *jtag_info, uint32_t out, uint32_t *deprecated, int breakpoint)
+/* put an instruction in the ARM7TDMI pipeline or write the data bus,
+ * and optionally read data
+ *
+ * FIXME remove the unused "deprecated" parameter
+ */
+static __inline int arm7tdmi_clock_out(struct arm_jtag *jtag_info,
+               uint32_t out, uint32_t *deprecated, int breakpoint)
 {
        jtag_set_end_state(TAP_DRPAUSE);
        arm_jtag_scann(jtag_info, 0x1);
@@ -165,10 +127,10 @@ static __inline int arm7tdmi_clock_out(arm_jtag_t *jtag_info, uint32_t out, uint
 }
 
 /* clock the target, reading the databus */
-int arm7tdmi_clock_data_in(arm_jtag_t *jtag_info, uint32_t *in)
+static int arm7tdmi_clock_data_in(struct arm_jtag *jtag_info, uint32_t *in)
 {
        int retval = ERROR_OK;
-       scan_field_t fields[2];
+       struct scan_field fields[2];
 
        jtag_set_end_state(TAP_DRPAUSE);
        if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
@@ -194,21 +156,13 @@ int arm7tdmi_clock_data_in(arm_jtag_t *jtag_info, uint32_t *in)
        jtag_add_runtest(0, jtag_get_end_state());
 
 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
-{
-               if ((retval = jtag_execute_queue()) != ERROR_OK)
-               {
-                       return retval;
-               }
+       if ((retval = jtag_execute_queue()) != ERROR_OK)
+               return retval;
 
-               if (in)
-               {
-                       LOG_DEBUG("in: 0x%8.8x", *in);
-               }
-               else
-               {
-                       LOG_ERROR("BUG: called with in == NULL");
-               }
-}
+       if (in)
+               LOG_DEBUG("in: 0x%8.8x", *in);
+       else
+               LOG_ERROR("BUG: called with in == NULL");
 #endif
 
        return ERROR_OK;
@@ -245,9 +199,12 @@ void arm_endianness(uint8_t *tmp, void *in, int size, int be, int flip)
        }
 }
 
-static int arm7endianness(jtag_callback_data_t arg, jtag_callback_data_t size, jtag_callback_data_t be, jtag_callback_data_t captured)
+static int arm7endianness(jtag_callback_data_t arg,
+       jtag_callback_data_t size, jtag_callback_data_t be,
+       jtag_callback_data_t captured)
 {
-  uint8_t *in = (uint8_t *)arg;
+       uint8_t *in = (uint8_t *)arg;
+
        arm_endianness((uint8_t *)captured, in, (int)size, (int)be, 1);
        return ERROR_OK;
 }
@@ -256,10 +213,11 @@ static int arm7endianness(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 arm7tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size, int be)
+static int arm7tdmi_clock_data_in_endianness(struct arm_jtag *jtag_info,
+               void *in, int size, int be)
 {
        int retval = ERROR_OK;
-       scan_field_t fields[2];
+       struct scan_field fields[2];
 
        jtag_set_end_state(TAP_DRPAUSE);
        if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
@@ -305,12 +263,11 @@ int arm7tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size,
        return ERROR_OK;
 }
 
-void arm7tdmi_change_to_arm(target_t *target, uint32_t *r0, uint32_t *pc)
+static void arm7tdmi_change_to_arm(struct target *target,
+               uint32_t *r0, uint32_t *pc)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       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 */
@@ -362,13 +319,12 @@ void arm7tdmi_change_to_arm(target_t *target, uint32_t *r0, uint32_t *pc)
  * The solution is to arrange for a large out/in scan in this loop and
  * and convert data afterwards.
  */
-void arm7tdmi_read_core_regs(target_t *target, uint32_t mask, uint32_t* core_regs[16])
+static void arm7tdmi_read_core_regs(struct target *target,
+               uint32_t mask, uint32_t* core_regs[16])
 {
        int i;
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* STMIA r0-15, [r0] at debug speed
         * register values will start to appear on 4th DCLK
@@ -388,13 +344,12 @@ void arm7tdmi_read_core_regs(target_t *target, uint32_t mask, uint32_t* core_reg
        }
 }
 
-void arm7tdmi_read_core_regs_target_buffer(target_t *target, uint32_t mask, void* buffer, int size)
+static void arm7tdmi_read_core_regs_target_buffer(struct target *target,
+               uint32_t mask, void* buffer, int size)
 {
        int i;
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
        int be = (target->endianness == TARGET_BIG_ENDIAN) ? 1 : 0;
        uint32_t *buf_u32 = buffer;
        uint16_t *buf_u16 = buffer;
@@ -431,12 +386,10 @@ void arm7tdmi_read_core_regs_target_buffer(target_t *target, uint32_t mask, void
        }
 }
 
-void arm7tdmi_read_xpsr(target_t *target, uint32_t *xpsr, int spsr)
+static void arm7tdmi_read_xpsr(struct target *target, uint32_t *xpsr, int spsr)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* MRS r0, cpsr */
        arm7tdmi_clock_out(jtag_info, ARMV4_5_MRS(0, spsr & 1), NULL, 0);
@@ -451,12 +404,10 @@ void arm7tdmi_read_xpsr(target_t *target, uint32_t *xpsr, int spsr)
        arm7tdmi_clock_data_in(jtag_info, xpsr);
 }
 
-void arm7tdmi_write_xpsr(target_t *target, uint32_t xpsr, int spsr)
+static void arm7tdmi_write_xpsr(struct target *target, uint32_t xpsr, int spsr)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       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);
 
@@ -482,12 +433,11 @@ void arm7tdmi_write_xpsr(target_t *target, uint32_t xpsr, int spsr)
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
 }
 
-void arm7tdmi_write_xpsr_im8(target_t *target, uint8_t xpsr_im, int rot, int spsr)
+static void arm7tdmi_write_xpsr_im8(struct target *target,
+               uint8_t xpsr_im, int rot, int spsr)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        LOG_DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
 
@@ -501,13 +451,12 @@ void arm7tdmi_write_xpsr_im8(target_t *target, uint8_t xpsr_im, int rot, int sps
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
 }
 
-void arm7tdmi_write_core_regs(target_t *target, uint32_t mask, uint32_t core_regs[16])
+static void arm7tdmi_write_core_regs(struct target *target,
+               uint32_t mask, uint32_t core_regs[16])
 {
        int i;
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* LDMIA r0-15, [r0] at debug speed
        * register values will start to appear on 4th DCLK
@@ -528,12 +477,10 @@ void arm7tdmi_write_core_regs(target_t *target, uint32_t mask, uint32_t core_reg
        arm7tdmi_clock_out_inner(jtag_info, ARMV4_5_NOP, 0);
 }
 
-void arm7tdmi_load_word_regs(target_t *target, uint32_t mask)
+static void arm7tdmi_load_word_regs(struct target *target, uint32_t mask)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* put system-speed load-multiple into the pipeline */
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
@@ -541,12 +488,10 @@ void arm7tdmi_load_word_regs(target_t *target, uint32_t mask)
        arm7tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 1), NULL, 0);
 }
 
-void arm7tdmi_load_hword_reg(target_t *target, int num)
+static void arm7tdmi_load_hword_reg(struct target *target, int num)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* put system-speed load half-word into the pipeline */
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
@@ -554,12 +499,10 @@ void arm7tdmi_load_hword_reg(target_t *target, int num)
        arm7tdmi_clock_out(jtag_info, ARMV4_5_LDRH_IP(num, 0), NULL, 0);
 }
 
-void arm7tdmi_load_byte_reg(target_t *target, int num)
+static void arm7tdmi_load_byte_reg(struct target *target, int num)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* put system-speed load byte into the pipeline */
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
@@ -567,12 +510,10 @@ void arm7tdmi_load_byte_reg(target_t *target, int num)
        arm7tdmi_clock_out(jtag_info, ARMV4_5_LDRB_IP(num, 0), NULL, 0);
 }
 
-void arm7tdmi_store_word_regs(target_t *target, uint32_t mask)
+static void arm7tdmi_store_word_regs(struct target *target, uint32_t mask)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* put system-speed store-multiple into the pipeline */
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
@@ -580,12 +521,10 @@ void arm7tdmi_store_word_regs(target_t *target, uint32_t mask)
        arm7tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask, 0, 1), NULL, 0);
 }
 
-void arm7tdmi_store_hword_reg(target_t *target, int num)
+static void arm7tdmi_store_hword_reg(struct target *target, int num)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* put system-speed store half-word into the pipeline */
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
@@ -593,12 +532,10 @@ void arm7tdmi_store_hword_reg(target_t *target, int num)
        arm7tdmi_clock_out(jtag_info, ARMV4_5_STRH_IP(num, 0), NULL, 0);
 }
 
-void arm7tdmi_store_byte_reg(target_t *target, int num)
+static void arm7tdmi_store_byte_reg(struct target *target, int num)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* put system-speed store byte into the pipeline */
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 0);
@@ -606,12 +543,10 @@ void arm7tdmi_store_byte_reg(target_t *target, int num)
        arm7tdmi_clock_out(jtag_info, ARMV4_5_STRB_IP(num, 0), NULL, 0);
 }
 
-void arm7tdmi_write_pc(target_t *target, uint32_t pc)
+static void arm7tdmi_write_pc(struct target *target, uint32_t pc)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        /* LDMIA r0-15, [r0] at debug speed
         * register values will start to appear on 4th DCLK
@@ -633,26 +568,23 @@ void arm7tdmi_write_pc(target_t *target, uint32_t pc)
        arm7tdmi_clock_out_inner(jtag_info, ARMV4_5_NOP, 0);
 }
 
-void arm7tdmi_branch_resume(target_t *target)
+static void arm7tdmi_branch_resume(struct target *target)
 {
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-       arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
+       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
 
        arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
        arm7tdmi_clock_out_inner(jtag_info, ARMV4_5_B(0xfffffa, 0), 0);
 }
 
-void arm7tdmi_branch_resume_thumb(target_t *target)
+static void arm7tdmi_branch_resume_thumb(struct target *target)
 {
-       LOG_DEBUG("-");
+       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];
 
-       /* 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];
+       LOG_DEBUG("-");
 
        /* LDMIA r0, [r0] at debug speed
         * register values will start to appear on 4th DCLK
@@ -705,37 +637,38 @@ void arm7tdmi_branch_resume_thumb(target_t *target)
        arm7tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7f8), NULL, 0);
 }
 
-void arm7tdmi_build_reg_cache(target_t *target)
+static void arm7tdmi_build_reg_cache(struct target *target)
 {
-       reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
-       /* get pointers to arch-specific information */
-       armv4_5_common_t *armv4_5 = target->arch_info;
+       struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
+       struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
 
        (*cache_p) = armv4_5_build_reg_cache(target, armv4_5);
        armv4_5->core_cache = (*cache_p);
 }
 
-int arm7tdmi_examine(struct target_s *target)
+int arm7tdmi_examine(struct target *target)
 {
+       struct arm7_9_common *arm7_9 = target_to_arm7_9(target);
        int retval;
-       armv4_5_common_t *armv4_5 = target->arch_info;
-       arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+
+
        if (!target_was_examined(target))
        {
                /* get pointers to arch-specific information */
-               reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
-               reg_cache_t *t = embeddedice_build_reg_cache(target, arm7_9);
+               struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache);
+               struct reg_cache *t = embeddedice_build_reg_cache(target, arm7_9);
                if (t == NULL)
                        return ERROR_FAIL;
 
                (*cache_p) = t;
                arm7_9->eice_cache = (*cache_p);
 
-               if (arm7_9->etm_ctx)
+               if (arm7_9->armv4_5_common.etm)
                {
-                       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;
+                       struct arm_jtag *jtag_info = &arm7_9->jtag_info;
+                       (*cache_p)->next = etm_build_reg_cache(target,
+                                       jtag_info, arm7_9->armv4_5_common.etm);
+                       arm7_9->armv4_5_common.etm->reg_cache = (*cache_p)->next;
                }
                target_set_examined(target);
        }
@@ -743,7 +676,7 @@ int arm7tdmi_examine(struct target_s *target)
                return retval;
        if ((retval = arm7_9_setup(target)) != ERROR_OK)
                return retval;
-       if (arm7_9->etm_ctx)
+       if (arm7_9->armv4_5_common.etm)
        {
                if ((retval = etm_setup(target)) != ERROR_OK)
                        return retval;
@@ -751,25 +684,16 @@ int arm7tdmi_examine(struct target_s *target)
        return ERROR_OK;
 }
 
-int arm7tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
+int arm7tdmi_init_target(struct command_context_s *cmd_ctx, struct target *target)
 {
        arm7tdmi_build_reg_cache(target);
 
        return ERROR_OK;
 }
 
-int arm7tdmi_quit(void)
-{
-       return ERROR_OK;
-}
-
-int arm7tdmi_init_arch_info(target_t *target, arm7tdmi_common_t *arm7tdmi, jtag_tap_t *tap)
+int arm7tdmi_init_arch_info(struct target *target, struct arm7tdmi_common *arm7tdmi, struct jtag_tap *tap)
 {
-       armv4_5_common_t *armv4_5;
-       arm7_9_common_t *arm7_9;
-
-       arm7_9 = &arm7tdmi->arm7_9_common;
-       armv4_5 = &arm7_9->armv4_5_common;
+       struct arm7_9_common *arm7_9 = &arm7tdmi->arm7_9_common;
 
        /* prepare JTAG information for the new target */
        arm7_9->jtag_info.tap = tap;
@@ -801,7 +725,6 @@ int arm7tdmi_init_arch_info(target_t *target, arm7tdmi_common_t *arm7tdmi, jtag_
        arm7_9->enable_single_step = arm7_9_enable_eice_step;
        arm7_9->disable_single_step = arm7_9_disable_eice_step;
 
-       arm7_9->pre_debug_entry = NULL;
        arm7_9->post_debug_entry = NULL;
 
        arm7_9->pre_restore_context = NULL;
@@ -812,31 +735,58 @@ int arm7tdmi_init_arch_info(target_t *target, arm7tdmi_common_t *arm7tdmi, jtag_
        arm7_9->thumb_bkpt = 0xdeee;
 
        arm7_9->dbgreq_adjust_pc = 2;
-       arm7_9->arch_info = arm7tdmi;
-
-       arm7tdmi->arch_info = NULL;
-       arm7tdmi->common_magic = ARM7TDMI_COMMON_MAGIC;
 
        arm7_9_init_arch_info(target, arm7_9);
 
        return ERROR_OK;
 }
 
-int arm7tdmi_target_create( struct target_s *target, Jim_Interp *interp )
+static int arm7tdmi_target_create(struct target *target, Jim_Interp *interp)
 {
-       arm7tdmi_common_t *arm7tdmi;
+       struct arm7tdmi_common *arm7tdmi;
 
-       arm7tdmi = calloc(1,sizeof(arm7tdmi_common_t));
+       arm7tdmi = calloc(1,sizeof(struct arm7tdmi_common));
        arm7tdmi_init_arch_info(target, arm7tdmi, target->tap);
+       arm7tdmi->arm7_9_common.armv4_5_common.is_armv4 = true;
 
        return ERROR_OK;
 }
 
-int arm7tdmi_register_commands(struct command_context_s *cmd_ctx)
+/** Holds methods for ARM7TDMI targets. */
+struct target_type arm7tdmi_target =
 {
-       int retval;
+       .name = "arm7tdmi",
 
-       retval = arm7_9_register_commands(cmd_ctx);
+       .poll = arm7_9_poll,
+       .arch_state = armv4_5_arch_state,
 
-       return retval;
-}
+       .target_request_data = arm7_9_target_request_data,
+
+       .halt = arm7_9_halt,
+       .resume = arm7_9_resume,
+       .step = arm7_9_step,
+
+       .assert_reset = arm7_9_assert_reset,
+       .deassert_reset = arm7_9_deassert_reset,
+       .soft_reset_halt = arm7_9_soft_reset_halt,
+
+       .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
+
+       .read_memory = arm7_9_read_memory,
+       .write_memory = arm7_9_write_memory,
+       .bulk_write_memory = arm7_9_bulk_write_memory,
+       .checksum_memory = arm7_9_checksum_memory,
+       .blank_check_memory = arm7_9_blank_check_memory,
+
+       .run_algorithm = armv4_5_run_algorithm,
+
+       .add_breakpoint = arm7_9_add_breakpoint,
+       .remove_breakpoint = arm7_9_remove_breakpoint,
+       .add_watchpoint = arm7_9_add_watchpoint,
+       .remove_watchpoint = arm7_9_remove_watchpoint,
+
+       .register_commands  = arm7_9_register_commands,
+       .target_create  = arm7tdmi_target_create,
+       .init_target = arm7tdmi_init_target,
+       .examine = arm7tdmi_examine,
+};