diff options
Diffstat (limited to 'kernel/interrupts/idt.dats')
-rw-r--r-- | kernel/interrupts/idt.dats | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/kernel/interrupts/idt.dats b/kernel/interrupts/idt.dats new file mode 100644 index 0000000..380260a --- /dev/null +++ b/kernel/interrupts/idt.dats @@ -0,0 +1,52 @@ +#include "kernel/kernel_prelude.hats" + +#define ATS_DYNLOADFLAG 0 + +staload "./idt.sats" + +extern castfn i2u8 {n: nat} (i: int n): uint8 n +extern castfn i2u16 {n: nat} (i: int n): uint16 n +extern castfn i2u32 {n: nat} (i: int n): uint32 n +extern castfn i2u64 {n: nat} (i: int n): uint64 n +extern castfn i2u {n: int} (i: uint8 n): int n + +%{ + __attribute__ ((interrupt)) +%} +// Default exception handler +fun default_exception_handler(frame: &int_frame) : void = let +in + println!("DEFAULT EXCEPTION HANDLER - NO ERROR CODE") +end + + +%{ + __attribute__ ((interrupt)) +%} +// Default exception handler (with error code) +fun default_exception_handler_e(frame: &int_frame, error_code : uint64) : void = let +in + println!("DEFAULT EXCEPTION HANDLER - ERROR CODE") +end + +var idt : @[idt_entry_t][256] // The table +var idtr : idtr_t // interrupt descriptor table register instance + +fun idt_set_descriptor {l : agz} {n : nat | n < 256} (vector: uint8 n, isr: ptr l, flags: uint8) : void = let + extern praxi __assert{l:addr} (ptr: ptr (l)): vtakeout0 (@[idt_entry_t][256]@l) + prval (pf, fpf) = __assert (addr@(idt)) + val t = @{ + isr_low = i2u16(0), + kernel_cs = i2u16(0) , + ist = i2u8(0), + attributes = i2u8(0) , + isr_mid = i2u16(0), + isr_high = i2u32(0), + reserved = i2u32(0) + } +in + idt[i2u(vector)] := t; + let prval () = fpf(pf) in end +end + +implement idt_init() : void = let in end |