ARM7TDMI uses the new inheritance/nesting scheme

Use target_to_arm7_9(), replacing needless pointer traversals.

Also:  remove now-useless contents of arm7tdmi struct; it's
almost ready to be removed.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

2 files changed, 28 insertions, 70 deletions

diff --git a/src/target/arm7tdmi.c b/src/target/arm7tdmi.c
index 27a8337f..8b929d49 100644
--- a/src/target/arm7tdmi.c
+++ b/src/target/arm7tdmi.c
@@ -44,9 +44,7 @@
 static int arm7tdmi_examine_debug_reason(target_t *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_s *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)
@@ -268,9 +266,7 @@ static int arm7tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info,
 static void arm7tdmi_change_to_arm(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* save r0 before using it and put system in ARM state
@@ -327,9 +323,7 @@ static void arm7tdmi_read_core_regs(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* STMIA r0-15, [r0] at debug speed
@@ -354,9 +348,7 @@ static void arm7tdmi_read_core_regs_target_buffer(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 	int be = (target->endianness == TARGET_BIG_ENDIAN) ? 1 : 0;
 	uint32_t *buf_u32 = buffer;
@@ -396,9 +388,7 @@ static void arm7tdmi_read_core_regs_target_buffer(target_t *target,
 
 static void arm7tdmi_read_xpsr(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* MRS r0, cpsr */
@@ -416,9 +406,7 @@ static void arm7tdmi_read_xpsr(target_t *target, uint32_t *xpsr, int spsr)
 
 static void arm7tdmi_write_xpsr(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	LOG_DEBUG("xpsr: %8.8" PRIx32 ", spsr: %i", xpsr, spsr);
@@ -448,9 +436,7 @@ static void arm7tdmi_write_xpsr(target_t *target, uint32_t xpsr, int spsr)
 static void arm7tdmi_write_xpsr_im8(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	LOG_DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
@@ -469,9 +455,7 @@ static void arm7tdmi_write_core_regs(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* LDMIA r0-15, [r0] at debug speed
@@ -495,9 +479,7 @@ static void arm7tdmi_write_core_regs(target_t *target,
 
 static void arm7tdmi_load_word_regs(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* put system-speed load-multiple into the pipeline */
@@ -508,9 +490,7 @@ static void arm7tdmi_load_word_regs(target_t *target, uint32_t mask)
 
 static void arm7tdmi_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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* put system-speed load half-word into the pipeline */
@@ -521,9 +501,7 @@ static void arm7tdmi_load_hword_reg(target_t *target, int num)
 
 static void arm7tdmi_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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* put system-speed load byte into the pipeline */
@@ -534,9 +512,7 @@ static void arm7tdmi_load_byte_reg(target_t *target, int num)
 
 static void arm7tdmi_store_word_regs(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* put system-speed store-multiple into the pipeline */
@@ -547,9 +523,7 @@ static void arm7tdmi_store_word_regs(target_t *target, uint32_t mask)
 
 static void arm7tdmi_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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* put system-speed store half-word into the pipeline */
@@ -560,9 +534,7 @@ static void arm7tdmi_store_hword_reg(target_t *target, int num)
 
 static void arm7tdmi_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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* put system-speed store byte into the pipeline */
@@ -573,9 +545,7 @@ static void arm7tdmi_store_byte_reg(target_t *target, int num)
 
 static void arm7tdmi_write_pc(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	/* LDMIA r0-15, [r0] at debug speed
@@ -600,9 +570,7 @@ static void arm7tdmi_write_pc(target_t *target, uint32_t pc)
 
 static void arm7tdmi_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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
 	arm_jtag_t *jtag_info = &arm7_9->jtag_info;
 
 	arm7tdmi_clock_out(jtag_info, ARMV4_5_NOP, NULL, 1);
@@ -611,14 +579,13 @@ static void arm7tdmi_branch_resume(target_t *target)
 
 static void arm7tdmi_branch_resume_thumb(target_t *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;
+	struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
+	struct armv4_5_common_s *armv4_5 = &arm7_9->armv4_5_common;
 	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
 	 */
@@ -673,8 +640,7 @@ static void arm7tdmi_branch_resume_thumb(target_t *target)
 static void arm7tdmi_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;
+	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);
@@ -682,9 +648,10 @@ static void arm7tdmi_build_reg_cache(target_t *target)
 
 int arm7tdmi_examine(struct target_s *target)
 {
+	struct arm7_9_common_s *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 */
@@ -725,11 +692,7 @@ int arm7tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *tar
 
 int arm7tdmi_init_arch_info(target_t *target, arm7tdmi_common_t *arm7tdmi, jtag_tap_t *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_s *arm7_9 = &arm7tdmi->arm7_9_common;
 
 	/* prepare JTAG information for the new target */
 	arm7_9->jtag_info.tap = tap;
@@ -771,10 +734,6 @@ 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);
 
diff --git a/src/target/arm7tdmi.h b/src/target/arm7tdmi.h
index da5c0401..f69ba49e 100644
--- a/src/target/arm7tdmi.h
+++ b/src/target/arm7tdmi.h
@@ -25,12 +25,11 @@
 
 #include "embeddedice.h"
 
-#define	ARM7TDMI_COMMON_MAGIC 0x00a700a7
-
+/* FIXME we don't really need a separate arm7tdmi struct any more...
+ * remove it, the arm7/arm9 common struct suffices.
+ */
 typedef struct arm7tdmi_common_s
 {
-	int common_magic;
-	void *arch_info;
 	arm7_9_common_t arm7_9_common;
 } arm7tdmi_common_t;