initial commit

2026-01-27 20:45:47 +01:00
commit 1e5eb44ca9
53 changed files with 11048 additions and 0 deletions
--- a/port/moonlight/trap_non_vectored.c
+++ b/port/moonlight/trap_non_vectored.c
@@ -0,0 +1,57 @@
+#include "hwtimer.h"
+#include <stdint.h>
+#include <tx_api.h>
+#include <tx_port.h>
+#include <stdio.h>
+#include "riscv-traps.h"
+
+#if __riscv_xlen == 64
+#define INTERRUPT_BIT 0x8000000000000000ull
+#else
+#define INTERRUPT_BIT 0x80000000ull
+#endif
+#define OS_IS_INTERRUPT(mcause) (mcause & INTERRUPT_BIT)
+#define OS_IS_TICK_INT(mcause) (mcause == (0x7 | INTERRUPT_BIT))
+#define OS_IS_SOFT_INT(mcause) (mcause == (0x3 | INTERRUPT_BIT))
+#define OS_IS_EXT_INT(mcause) (mcause == (0xb | INTERRUPT_BIT))
+
+extern void _tx_timer_interrupt(void);
+extern uintptr_t exception(uintptr_t mcause, uintptr_t mepc, uintptr_t mtval);
+
+void (*irq_handler[__riscv_xlen])();
+
+int register_irq_handler(unsigned irq_num, void (*handler)()) {
+    if(irq_num<__riscv_xlen){
+        irq_handler[irq_num] = handler;
+        return 1;
+    }
+    return 0;
+}
+
+void trap_handler(uintptr_t mcause, uintptr_t mepc, uintptr_t mtval) {
+    if(OS_IS_INTERRUPT(mcause)) {
+        unsigned irq_id = mcause&(__riscv_xlen-1);
+        switch(irq_id){
+            case RISCV_INT_MTI:
+                hwtimer_handler();
+                _tx_timer_interrupt();
+                break;
+            case RISCV_INT_MEI:
+                puts("[INTERRUPT]: handler ext irq error!\n");
+                while(1)
+                    ;
+                break;
+            default:
+                if(irq_handler[irq_id])
+                    irq_handler[irq_id]();
+                else {
+                    printf("[INTERRUPT]: Unkown Interrupt %d!!\n", mcause&0xff);
+                    puts("[INTERRUPT]: now can't deal with the interrupt!\n");
+                    while(1)
+                        ;
+                }
+        }
+    } else {
+        exception( mcause,  mepc,  mtval);
+    }
+}