File: t-dbt.s

package info (click to toggle)
gdb-doc 10.1-1
  • links: PTS, VCS
  • area: non-free
  • in suites: bullseye
  • size: 237,684 kB
  • sloc: ansic: 1,939,544; asm: 342,614; exp: 164,373; cpp: 69,350; makefile: 58,777; sh: 25,051; yacc: 13,167; ada: 5,758; xml: 5,461; perl: 5,334; python: 4,759; pascal: 3,220; lisp: 1,575; tcl: 1,541; f90: 1,395; cs: 879; lex: 620; sed: 234; awk: 141; objc: 137; fortran: 62
file content (33 lines) | stat: -rw-r--r-- 515 bytes parent folder | download | duplicates (36) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
.include "t-macros.i"

	start

	PSW_BITS = PSW_DM
	
;;; Blat our DMAP registers so that they point at on-chip imem

	ldi r2, MAP_INSN | 0xf
	st r2, @(DMAP_REG,r0)
	ldi r2, MAP_INSN
	st r2, @(IMAP1_REG,r0)

;;; Patch the interrupt vector's dbt entry with a jmp to success

	ldi r4, #trap
	ldi r5, (VEC_DBT & DMAP_MASK) + DMAP_BASE
	ld2w r2, @(0,r4)
	st2w r2, @(0,r5)
	ld2w r2, @(4,r4)
	st2w r2, @(4,r5)

test_dbt:
	dbt -> nop
	exit47

success:
	checkpsw2 1 PSW_BITS
	exit0

	.data
trap:	ldi r1, success@word
	jmp r1