blob: 1229988d9f93fe1c46edf95e748e8a5ad89eccb0 (
plain)
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
34
35
|
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Thumb mode toolchain helpers for compact switch/case statement.
*/
#include "config.h"
.text
.syntax unified
.code 16
/*
* Helper for compact switch
*
* r0: the table index
* lr: the table base address
*
* r0 and lr must be PRESERVED.
* r12 can be clobbered.
*/
.global __gnu_thumb1_case_uqi
.thumb_func
__gnu_thumb1_case_uqi:
push {r1}
mov r1, lr
lsrs r1, r1, #1
lsls r1, r1, #1
ldrb r1, [r1, r0]
lsls r1, r1, #1
add lr, lr, r1
pop {r1}
bx lr
|
