rtos: Add Cortex-R4 support for ThreadX

Change-Id: I0b55af690ed917ca783d90d11dcf012f49792ed7
Signed-off-by: Evan Hunter <ehunter@broadcom.com>
Reviewed-on: http://openocd.zylin.com/994
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

src/rtos/ThreadX.c

@@ -80,7 +80,16 @@ const struct ThreadX_params ThreadX_params_list[] = {
 	48,							/* thread_state_offset; */
 	136,						/* thread_next_offset */
 	&rtos_standard_Cortex_M3_stacking,	/* stacking_info */
-	}
+	},
+	{
+	"cortex_r4",				/* target_name */
+	4,							/* pointer_width; */
+	8,							/* thread_stack_offset; */
+	40,							/* thread_name_offset; */
+	48,							/* thread_state_offset; */
+	136,						/* thread_next_offset */
+	&rtos_standard_Cortex_R4_stacking,	/* stacking_info */
+	},
 };
 
 #define THREADX_NUM_PARAMS ((int)(sizeof(ThreadX_params_list)/sizeof(struct ThreadX_params)))

src/rtos/rtos_standard_stackings.c

@@ -53,6 +53,36 @@ static const struct stack_register_offset rtos_standard_Cortex_M3_stack_offsets[
 	{ 0x3c, 32 },		/* xPSR */
 };
 
+
+static const struct stack_register_offset rtos_standard_Cortex_R4_stack_offsets[] = {
+	{ 0x08, 32 },		/* r0  (a1)   */
+	{ 0x0c, 32 },		/* r1  (a2)  */
+	{ 0x10, 32 },		/* r2  (a3)  */
+	{ 0x14, 32 },		/* r3  (a4)  */
+	{ 0x18, 32 },		/* r4  (v1)  */
+	{ 0x1c, 32 },		/* r5  (v2)  */
+	{ 0x20, 32 },		/* r6  (v3)  */
+	{ 0x24, 32 },		/* r7  (v4)  */
+	{ 0x28, 32 },		/* r8  (a1)  */
+	{ 0x2c, 32 },		/* r9  (sb)  */
+	{ 0x30, 32 },		/* r10 (sl) */
+	{ 0x34, 32 },		/* r11 (fp) */
+	{ 0x38, 32 },		/* r12 (ip) */
+	{ -2,   32 },		/* sp   */
+	{ 0x3c, 32 },		/* lr   */
+	{ 0x40, 32 },		/* pc   */
+	{ -1,   96 },		/* FPA1 */
+	{ -1,   96 },		/* FPA2 */
+	{ -1,   96 },		/* FPA3 */
+	{ -1,   96 },		/* FPA4 */
+	{ -1,   96 },		/* FPA5 */
+	{ -1,   96 },		/* FPA6 */
+	{ -1,   96 },		/* FPA7 */
+	{ -1,   96 },		/* FPA8 */
+	{ -1,   32 },		/* FPS  */
+	{ 0x04, 32 },		/* CSPR */
+};
+
 const struct rtos_register_stacking rtos_standard_Cortex_M3_stacking = {
 	0x40,					/* stack_registers_size */
 	-1,					/* stack_growth_direction */
@@ -60,3 +90,12 @@ const struct rtos_register_stacking rtos_standard_Cortex_M3_stacking = {
 	8,					/* stack_alignment */
 	rtos_standard_Cortex_M3_stack_offsets	/* register_offsets */
 };
+
+
+const struct rtos_register_stacking rtos_standard_Cortex_R4_stacking = {
+	0x48,					/* stack_registers_size */
+	-1,					/* stack_growth_direction */
+	26,					/* num_output_registers */
+	8,					/* stack_alignment */
+	rtos_standard_Cortex_R4_stack_offsets	/* register_offsets */
+};

src/rtos/rtos_standard_stackings.h

@@ -28,5 +28,6 @@
 #include "rtos.h"
 
 extern const struct rtos_register_stacking rtos_standard_Cortex_M3_stacking;
+extern const struct rtos_register_stacking rtos_standard_Cortex_R4_stacking;
 
 #endif	/* ifndef INCLUDED_RTOS_STANDARD_STACKINGS_H_ */