From: Clyne Sullivan <clyne@bitgloo.com>
Date: Sun, 6 Oct 2024 14:17:57 +0000 (-0400)
Subject: clean up vtor set
X-Git-Url: https://code.bitgloo.com/?a=commitdiff_plain;h=64df2e9f313ca8b22310f839ab50f7ec2628ec25;p=clyne%2Fzig-stm32l476.git

clean up vtor set
---

diff --git a/src/interrupt.zig b/src/interrupt.zig
index 60faec6..2fe1671 100644
--- a/src/interrupt.zig
+++ b/src/interrupt.zig
@@ -1,5 +1,6 @@
-var vector_table: [256] *const fn () void = undefined;
-var vtor: *u32 = @ptrFromInt(0xE000ED08);
+const vector_table_type = [256] *const fn () void;
+var vector_table: vector_table_type = undefined;
+var vtor: **volatile vector_table_type = @ptrFromInt(0xE000ED08);
 
 pub const vector = enum(u8) {
     NMI = 2,
@@ -25,7 +26,7 @@ pub fn initialize() void {
     register(.BusFault, busfault);
     register(.UsageFault, usagefault);
 
-    vtor.* = @as(u32, @intFromPtr(&vector_table));
+    vtor.* = &vector_table;
 }
 
 pub fn register(index: vector, handler: *const fn () void) void {