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Fix a couple of errors in the last commit

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This commit is contained in:
Gregory Nutt 2016-12-23 10:45:13 -06:00
parent c00a1870d7
commit d9ef0e86fb
1 changed files with 7 additions and 4 deletions
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11
arch/arm/src/armv7-a/arm_fullcontextrestore.S
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@ -135,14 +135,17 @@ up_fullcontextrestore:
/* Recover the stack pointer (r13) */
add sp, r0, #(4*REG_SP) /* Recover the stack pointer */
ldr sp, [r0, #(4*REG_SP)] /* Recover the stack pointer */
/* Create a stack from to preserve the structure pointer and some
* additional registers. We need to have everything preserved on the
* stack when irq_restore_lock(0) is called.
* additional registers. We should have everything preserved on the
* in registers on on the stack when irq_restore_lock(0) is called (I am
* not sure that is necessary, but I have concerns about the save
* structure getting modified in the TCB if the spinlock is released --
* assuming that it is set???).
*/
sub sp, sp, #(4*9) /* Frame for eight registers */
sub sp, sp, #(4*9) /* Frame for nine registers */
str r0, [sp, #(4*0)] /* Save the structure pointer at the top of the stack */
ldr r1, [r0, #(4*REG_R2)] /* Fetch the stored r2 value */