git.y1.nz

commit 7d504679dd7695cad76a3832e2bf08390e724493
parent eb4bd5f814526af019bf0ad1601ff2557bcca8dd
Author: Toxa <untoxa@mail.ru>
Date:   Sat, 26 Jun 2021 19:22:31 +0300

helper macro for constructing of interrupt vectors

Diffstat:
A
gbdk-lib/include/gb/isr.h
32
++++++++++++++++++++++++++++++++

1 file changed, 32 insertions(+), 0 deletions(-)
diff --git a/gbdk-lib/include/gb/isr.h b/gbdk-lib/include/gb/isr.h
@@ -0,0 +1,32 @@
+/** @file gb/isr.h
+    
+    Allows constructing of raw ISR vectors. 
+
+*/
+#ifndef _ISR_H_INCLUDE_
+#define _ISR_H_INCLUDE_
+
+#include <stdint.h>
+
+// #define VECTOR_VBL     0x40 // you can not define raw vector for VBlank interrupt
+#define VECTOR_STAT    0x48
+#define VECTOR_TIMER   0x50
+#define VECTOR_SERIAL  0x58
+#define VECTOR_JOYPAD  0x60
+
+typedef struct isr_vector_t {
+    uint8_t opcode;
+    void * func;
+} isr_vector_t;
+
+/** Creates the interrupt vector at the given address for the raw interrupt service routrine
+    
+    @param ADDR address of the vector
+
+    @param FUNC ISR function
+*/
+#define ISR_VECTOR(ADDR, FUNC) \
+static const isr_vector_t __at((ADDR)) __ISR_ ## ADDR = {0xc3, (void *)&(FUNC) };
+
+
+#endif // _ISR_H_INCLUDE_

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