git.y1.nz

commit 5774ae4acc7ff84a3199732128ea8b0dfdec39c3
parent 6b4ae396ca19c76566e430552ceffd23be17f6c3
Author: Toxa <untoxa@mail.ru>
Date:   Sat,  4 Sep 2021 20:29:16 +0300

GB: ISR_NESTED_VECTOR() macro

Diffstat:
M
gbdk-lib/include/gb/isr.h
16
+++++++++++++++-

1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/gbdk-lib/include/gb/isr.h b/gbdk-lib/include/gb/isr.h
@@ -26,7 +26,21 @@ typedef struct isr_vector_t {
     @param FUNC ISR function
 */
 #define ISR_VECTOR(ADDR, FUNC) \
-static const isr_vector_t __at((ADDR)) __ISR_ ## ADDR = {0xc3, (void *)&(FUNC) };
+static const isr_vector_t __at((ADDR)) __ISR_ ## ADDR = {0xc3, (void *)&(FUNC)};
+
+typedef struct isr_nested_vector_t {
+    uint8_t opcode[2];
+    void * func;
+} isr_vector_t;
+
+/** Creates the interrupt vector at the given address for the raw interrupt service routrine allowing nested inteerupts
+    
+    @param ADDR address of the vector
+
+    @param FUNC ISR function
+*/
+#define ISR_NESTED_VECTOR(ADDR, FUNC) \
+static const isr_nested_vector_t __at((ADDR)) __ISR_ ## ADDR = {{0xfb, 0xc3}, (void *)&(FUNC)};
 
 
 #endif // _ISR_H_INCLUDE_

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