mirror of
git://git.code.sf.net/p/openocd/code
synced 2025-08-16 10:57:00 +10:00
a126229dff
Replace the GPLv2-or-later boilerplate with the SPDX tag. The SPDX tag on files *.c is incorrect, as it should use the C99 single line comment using '//'. But current checkpatch doesn't allow C99 comments, so keep using standard C comments, by now. Change-Id: I380d552940f1c405309a3346454251c0e80b5a45 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/7159 Tested-by: jenkins
61 lines
1.1 KiB
ArmAsm
61 lines
1.1 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
/***************************************************************************
|
|
* Copyright (C) 2010 by Spencer Oliver *
|
|
* spen@spen-soft.co.uk *
|
|
***************************************************************************/
|
|
|
|
/*
|
|
parameters:
|
|
r0 - pointer to struct { uint32_t size_in_result_out, uint32_t addr }
|
|
r1 - value to check
|
|
*/
|
|
|
|
.text
|
|
.syntax unified
|
|
.cpu cortex-m0
|
|
.thumb
|
|
.thumb_func
|
|
|
|
.align 2
|
|
|
|
BLOCK_SIZE_RESULT = 0
|
|
BLOCK_ADDRESS = 4
|
|
SIZEOF_STRUCT_BLOCK = 8
|
|
|
|
start:
|
|
block_loop:
|
|
ldr r2, [r0, #BLOCK_SIZE_RESULT] /* get size */
|
|
tst r2, r2
|
|
beq done
|
|
|
|
ldr r3, [r0, #BLOCK_ADDRESS] /* get address */
|
|
|
|
word_loop:
|
|
ldr r4, [r3] /* read word */
|
|
adds r3, #4
|
|
|
|
cmp r4, r1
|
|
bne not_erased
|
|
|
|
subs r2, #1
|
|
bne word_loop
|
|
|
|
movs r4, #1 /* block is erased */
|
|
save_result:
|
|
str r4, [r0, #BLOCK_SIZE_RESULT]
|
|
adds r0, #SIZEOF_STRUCT_BLOCK
|
|
b block_loop
|
|
|
|
not_erased:
|
|
movs r4, #0
|
|
b save_result
|
|
|
|
/* Avoid padding at .text segment end. Otherwise exit point check fails. */
|
|
.skip ( . - start + 2) & 2, 0
|
|
|
|
done:
|
|
bkpt #0
|
|
|
|
.end
|