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arch: arm: remove unnecessary stacking/unstacking

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Due to code re-organization inside __pendSV(), the stacking
and unstacking of scratch registers around the invocation of
read_timer_end_of_swap() is no longer required.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
This commit is contained in:
Ioannis Glaropoulos 2019-02-11 10:04:15 +01:00 • committed by Kumar Gala
commit 55c2b73af6
1 changed files with 0 additions and 2 deletions
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2
arch/arm/core/swap_helper.S
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@ -233,7 +233,6 @@ _thread_irq_disabled:
#endif /* CONFIG_BUILTIN_STACK_GUARD */ #endif /* CONFIG_BUILTIN_STACK_GUARD */
#ifdef CONFIG_EXECUTION_BENCHMARKING #ifdef CONFIG_EXECUTION_BENCHMARKING
stm sp!,{r0-r3} /* Save regs r0 to r3 on stack */
push {r0, lr} push {r0, lr}
bl read_timer_end_of_swap bl read_timer_end_of_swap
#if defined(CONFIG_ARMV6_M_ARMV8_M_BASELINE) #if defined(CONFIG_ARMV6_M_ARMV8_M_BASELINE)
@ -242,7 +241,6 @@ _thread_irq_disabled:
#else #else
pop {r0, lr} pop {r0, lr}
#endif /* CONFIG_ARMV6_M_ARMV8_M_BASELINE */ #endif /* CONFIG_ARMV6_M_ARMV8_M_BASELINE */
ldm sp!,{r0-r3} /* Load back regs r0 to r3 */
#endif /* CONFIG_EXECUTION_BENCHMARKING */ #endif /* CONFIG_EXECUTION_BENCHMARKING */