From a9f63b8cdb930d079cc69d492fe44dc8224c1e03 Mon Sep 17 00:00:00 2001 From: Christian Cunningham Date: Wed, 16 Mar 2022 22:28:33 -0700 Subject: More comments --- src/exceptions/data.S | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'src/exceptions/data.S') diff --git a/src/exceptions/data.S b/src/exceptions/data.S index 656ba96..e3add71 100644 --- a/src/exceptions/data.S +++ b/src/exceptions/data.S @@ -9,21 +9,24 @@ data: ldr r2, =data_msg bl draw_string // Output return address - mov r0, #13 - mov r1, #15 + mov r0, #80 + mov r1, #0 mov r2, r4 sub r2, #8 bl draw_hex32 - mov r0, #22 - mov r1, #15 + // Output the data at the address + mov r0, #80 + mov r1, #1 ldr r2, [r4, #-8] bl draw_hex32 - mov r0, #32 - mov r1, #15 + // Output the Program Status + mov r0, #80 + mov r1, #2 mrs r2, spsr bl draw_hex32 - mov r0, #41 - mov r1, #15 + // Output the data-fault register + mov r0, #80 + mov r1, #3 mrc p15, 0, r2, c5, c0, 0 //// https://developer.arm.com/documentation/ddi0464/d/System-Control/Register-descriptions/Data-Fault-Status-Register?lang=en bl draw_hex32 ldmfd sp!, {r0-r12,lr} -- cgit v1.2.1