1 files changed, 70 insertions, 0 deletions
diff --git a/kc/core/cpu/interrupt.h b/kc/core/cpu/interrupt.h
new file mode 100644
index 0000000..dff2d99
--- /dev/null
+++ b/kc/core/cpu/interrupt.h
@@ -0,0 +1,70 @@
+#pragma once
+
+#ifndef __ASSEMBLER__
+#else
+
+.macro ISR_STORE_PARAM_REGS
+push %rdi
+push %rsi
+push %rdx
+push %rcx
+push %r8
+push %r9
+.endm
+
+#define ISR_PARAM_REGS_SIZE 48
+
+.macro ISR_STORE_CALLER_REGS
+push %rax
+push %r10
+push %r11
+.endm
+
+#define ISR_CALLER_REGS_SIZE 24
+
+.macro ISR_STORE_CALLEE_REGS
+push %rbx
+push %rbp
+push %r12
+push %r13
+push %r14
+push %r15
+.endm
+
+#define ISR_CALLEE_REGS_SIZE 48
+
+.macro ISR_RESTORE_PARAM_REGS
+pop %r9
+pop %r8
+pop %rcx
+pop %rdx
+pop %rsi
+pop %rdi
+.endm
+
+.macro ISR_RESTORE_CALLER_REGS
+pop %r11
+pop %r10
+pop %rax
+.endm
+
+.macro ISR_RESTORE_CALLEE_REGS
+pop %r15
+pop %r14
+pop %r13
+pop %r12
+pop %rbp
+pop %rbx
+.endm
+
+.macro ISR_CALL func
+    // align the stack for the call to the handler function
+    mov %rsp, %rbp
+    and $-16, %rsp
+    call \func
+    // restore stack pointer, possibly unaligned
+    mov %rbp, %rsp
+.endm
+
+#endif
+