cpu: inline function to print instruction register

cpu/atmega_common/include/cpu.h

@@ -25,9 +25,11 @@
 #ifndef __ATMEGA_COMMON_H
 #define __ATMEGA_COMMON_H
 
-#include "cpu_conf.h"
+#include <stdio.h>
 #include <avr/interrupt.h>
 
+#include "cpu_conf.h"
+
 /**
  * For downwards compatibility with old RIOT code.
  * TODO: remove once core was adjusted
@@ -46,6 +48,16 @@ extern "C" {
  */
 void cpu_init(void);
 
+/**
+ * @brief   Print the last instruction's address
+ *
+ * @todo:   Not supported
+ */
+static inline void cpu_print_last_instruction(void)
+{
+    printf("n/a");
+}
+
 #ifdef __cplusplus
 }
 #endif

cpu/cortexm_common/include/cpu.h

@@ -30,6 +30,8 @@
 #ifndef CPU_H_
 #define CPU_H_
 
+#include <stdio.h>
+
 #include "cpu_conf.h"
 #include "irq.h"
 
@@ -100,6 +102,16 @@ void cpu_init(void);
  */
 void cortexm_init(void);
 
+/**
+ * @brief   Prints the current content of the link register (lr)
+ */
+static inline void cpu_print_last_instruction(void)
+{
+    register uint32_t *lr_ptr;
+    __asm__ __volatile__("mov %0, lr" : "=r"(lr_ptr));
+    printf("%p", lr_ptr);
+}
+
 #ifdef __cplusplus
 }
 #endif

cpu/lpc2387/include/cpu.h

@@ -16,7 +16,9 @@
  * @{
  */
 
+#include <stdio.h>
 #include <stdbool.h>
+
 #include "lpc2387.h"
 #include "arm_cpu.h"
 
@@ -41,6 +43,16 @@ bool install_irq(int IntNumber, void (*HandlerAddr)(void), int Priority);
 void gpio_init_ports(void);
 #endif
 
+/**
+ * @brief   Prints the current content of the link register (lr)
+ */
+static inline void cpu_print_last_instruction(void)
+{
+    register uint32_t *lr_ptr;
+    __asm__ __volatile__("mov %0, lr" : "=r"(lr_ptr));
+    printf("%p", lr_ptr);
+}
+
 #ifdef __cplusplus
 }
 #endif

cpu/msp430-common/include/cpu.h

@@ -167,6 +167,16 @@ inline void __restore_context(unsigned int irqen)
  */
 void msp430_cpu_init(void);
 
+/**
+ * @brief   Print the last instruction's address
+ *
+ * @todo:   Not supported
+ */
+static inline void cpu_print_last_instruction(void)
+{
+    printf("n/a");
+}
+
 #ifdef __cplusplus
 }
 #endif

cpu/native/include/cpu.h

@@ -20,6 +20,8 @@
 #ifndef _CPU_H
 #define _CPU_H
 
+#include <stdio.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -28,6 +30,16 @@ extern "C" {
 void dINT(void);
 void eINT(void);
 
+/**
+ * @brief   Prints the last instruction's address
+ */
+static inline void cpu_print_last_instruction(void)
+{
+    void *p;
+    __asm__("1: mov 1b, %0" : "=r" (p));
+    printf("%p", p);
+}
+
 #ifdef __cplusplus
 }
 #endif

cpu/x86/include/cpu.h

@@ -133,6 +133,16 @@ void x86_init_board(void);
  */
 bool x86_get_memory_region(uint64_t *start, uint64_t *len, unsigned long *cnt);
 
+/**
+ * @brief   Prints the last instruction's address
+ *
+ * @todo:   Not supported
+ */
+static inline void cpu_print_last_instruction(void)
+{
+    printf("n/a");
+}
+
 #ifdef __cplusplus
 }
 #endif