From 9b22a6965579ea1867aea291d910c96f386b518b Mon Sep 17 00:00:00 2001
From: Brett Weiland <brett_weiland@bpcspace.com>
Date: Tue, 24 Aug 2021 14:09:29 -0500
Subject: major backup 8.24.21

---
 src/kernel/isv_asm.asm | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 src/kernel/isv_asm.asm

(limited to 'src/kernel/isv_asm.asm')

diff --git a/src/kernel/isv_asm.asm b/src/kernel/isv_asm.asm
new file mode 100644
index 0000000..b770aaa
--- /dev/null
+++ b/src/kernel/isv_asm.asm
@@ -0,0 +1,65 @@
+global timer_init_pit
+global kernel_block
+global fatal_hwexception
+global fatal_hwexception_errcode
+global lapic_timer_racefixer
+
+extern clear_int
+extern panic
+extern calibrate_lapic_waiting
+
+;I need to get my timing right and consistently boot smp,
+;_then_ I'll work on cleaning this up.
+
+timer_init_pit:
+cli
+mov ecx, DWORD [rbx + 0x390]
+mov DWORD [rbx + 0x380], 0
+in al, 0x61
+and al, 0xfe
+out 0x61, al
+mov DWORD [rbx + 0xb0], 0
+iretq
+
+
+kernel_block:
+call clear_int
+iretq
+
+
+fatal_hwexception:
+push qword rdi
+push qword rsi
+push qword rdx
+push qword rcx
+push qword rbx
+push qword rax
+mov rdi, 0
+mov rdx, rsp
+mov rsi, rdx
+add rsi, 48
+call panic
+
+; rdi: reason
+; rsi: frame
+; rdx: regs
+
+; 0xffff80000010af70
+fatal_hwexception_errcode:
+push qword rdi
+push qword rsi
+push qword rdx
+push qword rcx
+push qword rbx
+push qword rax
+mov rdi, 1
+mov rdx, rsp
+mov rsi, rdx
+add rsi, 48
+call panic
+
+lapic_timer_racefixer: ;in case the lapic makes it to zero, impliment me
+inc rbx
+call clear_int
+mov QWORD [rsp], calibrate_lapic_waiting
+iretq
-- 
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