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arch/armv7-a: Colorize the idle thread stack for other cpu(SMP) 

Keep previous modification.

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
This commit is contained in:
Jiuzhu Dong 2021-06-11 11:47:37 +08:00 committed by Xiang Xiao
parent 7d82e7a7c4
commit 2fd25d7ea7
1 changed files with 24 additions and 0 deletions
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24
arch/arm/src/armv7-a/arm_cpuhead.S
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@ -396,6 +396,22 @@ __cpu3_start:
.Lcpu_vstart:
#ifdef CONFIG_STACK_COLORATION
/* Write a known value to the IDLE thread stack to support stack
* monitoring logic
*/
adr r3, .Lstkinit
mov r0, sp /* R0 = end of IDLE stack */
ldmia r3, {r1, r2} /* R1 = Size of stack; R2 = coloration */
1: /* Top of the loop */
sub r1, r1, #1 /* R1 = Number of words remaining */
cmp r1, #0 /* Check (nwords == 0) */
str r2, [r0, #-4]! /* Save stack color word, increment stack address */
bne 1b /* Bottom of the loop */
#endif
/* Branch to continue C level CPU initialization */
mov fp, #0 /* Clear framepointer */
@ -410,6 +426,14 @@ __cpu3_start:
/* Text-section constants: */
#ifdef CONFIG_STACK_COLORATION
.type .Lstkinit, %object
.Lstkinit:
.long SMP_STACK_WORDS
.long STACK_COLOR /* Stack coloration word */
.size .Lstkinit, . -.Lstkinit
#endif
/***************************************************************************
* .noinit section data
***************************************************************************/