Interrupt handling/cpu exceptions

2025-12-21 11:55:49 +01:00
parent 84c600b903
commit c3123192d8
9 changed files with 324 additions and 4 deletions
--- a/kernel/amd64/intr_stub.S
+++ b/kernel/amd64/intr_stub.S
@@ -0,0 +1,110 @@
+.extern amd64_intr_handler
+
+dupa:
+  jmp dupa
+
+#define err(z) \
+  pushq $z;
+
+#define no_err(z) \
+  pushq $0; \
+  pushq $z;
+
+#define push_regs \
+  pushq %rax; \
+  pushq %rcx; \
+  pushq %rdx; \
+  pushq %rsi; \
+  pushq %rdi; \
+  pushq %rbp; \
+  pushq %rbx; \
+  pushq %r8; \
+  pushq %r9; \
+  pushq %r10; \
+  pushq %r11; \
+  pushq %r12; \
+  pushq %r13; \
+  pushq %r14; \
+  pushq %r15;
+
+#define pop_regs \
+  popq %r15; \
+  popq %r14; \
+  popq %r13; \
+  popq %r12; \
+  popq %r11; \
+  popq %r10; \
+  popq %r9; \
+  popq %r8; \
+  pushq %rbx; \
+  popq %rbp; \
+  popq %rdi; \
+  popq %rsi; \
+  popq %rdx; \
+  popq %rcx; \
+  popq %rax;
+
+#define make_intr_stub(x, n) \
+  .global amd64_intr ## n; \
+  amd64_intr ## n:; \
+  x(n); \
+  cli; \
+  push_regs; \
+  cld; \
+  movq %rsp, %rdi; \
+  andq $~0xF, %rsp; \
+  callq amd64_intr_handler; \
+  movq %rdi, %rsp; \
+  pop_regs; \
+  addq $16, %rsp; \
+  iretq;
+  
+
+make_intr_stub(no_err, 0)
+make_intr_stub(no_err, 1)
+make_intr_stub(no_err, 2)
+make_intr_stub(no_err, 3)
+make_intr_stub(no_err, 4)
+make_intr_stub(no_err, 5)
+make_intr_stub(no_err, 6)
+make_intr_stub(no_err, 7)
+make_intr_stub(err, 8)
+make_intr_stub(no_err, 9)
+make_intr_stub(err, 10)
+make_intr_stub(err, 11)
+make_intr_stub(err, 12)
+make_intr_stub(err, 13)
+make_intr_stub(err, 14)
+make_intr_stub(no_err, 15)
+make_intr_stub(no_err, 16)
+make_intr_stub(err, 17)
+make_intr_stub(no_err, 18)
+make_intr_stub(no_err, 19)
+make_intr_stub(no_err, 20)
+make_intr_stub(err, 21)
+make_intr_stub(no_err, 22)
+make_intr_stub(no_err, 23)
+make_intr_stub(no_err, 24)
+make_intr_stub(no_err, 25)
+make_intr_stub(no_err, 26)
+make_intr_stub(no_err, 27)
+make_intr_stub(no_err, 28)
+make_intr_stub(err, 29)
+make_intr_stub(err, 30)
+make_intr_stub(no_err, 31)
+make_intr_stub(no_err, 32)
+make_intr_stub(no_err, 33)
+make_intr_stub(no_err, 34)
+make_intr_stub(no_err, 35)
+make_intr_stub(no_err, 36)
+make_intr_stub(no_err, 37)
+make_intr_stub(no_err, 38)
+make_intr_stub(no_err, 39)
+make_intr_stub(no_err, 40)
+make_intr_stub(no_err, 41)
+make_intr_stub(no_err, 42)
+make_intr_stub(no_err, 43)
+make_intr_stub(no_err, 44)
+make_intr_stub(no_err, 45)
+make_intr_stub(no_err, 46)
+make_intr_stub(no_err, 47)