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Optimize xPortGetCoreID to 2-instruction inline assembly.

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This commit is contained in:
Jeroen Domburg
2016-10-17 18:09:15 +08:00
parent bdd67c98d6
commit 0403d43b19
4 changed files with 2 additions and 21 deletions
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3
components/freertos/include/freertos/portable.h
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@@ -192,8 +192,7 @@ void vPortEndScheduler( void ) PRIVILEGED_FUNCTION;
#endif
/* Multi-core: get current core ID */
int xPortGetCoreID( void );
#define xPortGetCoreID() __extension__({int id; asm volatile("rsr.prid %0; extui %0,%0,13,1":"=r"(id)); id;})
#ifdef __cplusplus
}

7
components/freertos/include/freertos/xtensa_context.h
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@@ -322,12 +322,7 @@ STRUCT_END(XtSolFrame)
#ifdef __ASSEMBLER__
.macro getcoreid reg
rsr.prid \reg
bbci \reg,1,1f
movi \reg,1
j 2f
1:
movi \reg,0
2:
extui \reg,\reg,13,1
.endm
#endif