From 27b8676963d5d69353f44fde7faaa9a4dfe1567b Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sat, 3 Aug 2024 02:04:58 +0200
Subject: kernel: send user interrupt on page fault

I really should just rename interrupts to something else.

This is inspired by Plan9 and meant to make debugging easier, as the
dying process can take a stacktrace etc.

It kinda sucks that the default handler now depends on fprintf, which is quite
a bit of code, but whatever.
---
 src/cmd/crash.c | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 src/cmd/crash.c

(limited to 'src/cmd')

diff --git a/src/cmd/crash.c b/src/cmd/crash.c
new file mode 100644
index 0000000..a644eed
--- /dev/null
+++ b/src/cmd/crash.c
@@ -0,0 +1,7 @@
+int
+main(void)
+{
+	// TODO flags to write into kernel mem / nonexistent mem, read/write
+	volatile int *thing = (void*)0xF000BAAA;
+	*thing = 1337;
+}
-- 
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