From a9f63b8cdb930d079cc69d492fe44dc8224c1e03 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Wed, 16 Mar 2022 22:28:33 -0700
Subject: More comments

---
 src/exceptions/fiq.S | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'src/exceptions/fiq.S')

diff --git a/src/exceptions/fiq.S b/src/exceptions/fiq.S
index f323a02..005ed76 100644
--- a/src/exceptions/fiq.S
+++ b/src/exceptions/fiq.S
@@ -6,13 +6,17 @@ fiq:
 	bl c_fiq_handler
 	cmp r0, #1
 	bne 1f
+	// Schedule if interrupted a thread
 	mrs r1, spsr
 	and r1, r1, #0x1f
 	cmp r1, #0x10
 	bne 1f
 	ldmfd sp!, {r0-r12,lr}
+	// Don't skip missed instruction upon return
 	sub lr, #4
 	push {r3}
+	// Store the instruction in a special area for
+	//  future processing
 	ldr r3, =irqlr
 	str lr, [r3, #0]
 	pop {r3}
@@ -21,6 +25,3 @@ fiq:
 1:
 	ldmfd sp!, {r0-r12,lr}
 	subs pc, lr, #4
-
-.section .data
-fiq_msg:	.asciz "FIQ\n"
-- 
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