GCC inline a optimalizace

[Miroslav Mraz]

Mně se to chová normálně. gcc version 4.9.3, -Os.

20000370 <SysTick_Handler>:

volatile int criticalNesting = 0;
static const int CRITICAL_INT_PRIORITY = 95;

inline  void EnterCritical() {
   __asm volatile (
20000370:	f04f 005f 	mov.w	r0, #95	; 0x5f
20000374:	f380 8811 	msr	BASEPRI, r0
     "    mov r0, %0              \n"
     "    msr basepri, r0         \n"
     ::"i" (CRITICAL_INT_PRIORITY) :"r0"
     );
   criticalNesting++;
20000378:	4b0a      	ldr	r3, [pc, #40]	; (200003a4 <SysTick_Handler+0x34>)
2000037a:	681a      	ldr	r2, [r3, #0]
2000037c:	3201      	adds	r2, #1
2000037e:	601a      	str	r2, [r3, #0]

volatile uint64_t sysTicksCounter;

void SysTick_Handler (void) {
   EnterCritical();
   sysTicksCounter++;
20000380:	4a09      	ldr	r2, [pc, #36]	; (200003a8 <SysTick_Handler+0x38>)
20000382:	e9d2 0100 	ldrd	r0, r1, [r2]
20000386:	3001      	adds	r0, #1
20000388:	f141 0100 	adc.w	r1, r1, #0
2000038c:	e9c2 0100 	strd	r0, r1, [r2]
     );
   criticalNesting++;
}

inline void ExitCritical() {
   criticalNesting--;
20000390:	681a      	ldr	r2, [r3, #0]
20000392:	3a01      	subs	r2, #1
20000394:	601a      	str	r2, [r3, #0]
   if (criticalNesting == 0) {
20000396:	681b      	ldr	r3, [r3, #0]
20000398:	b91b      	cbnz	r3, 200003a2 <SysTick_Handler+0x32>
     __asm volatile (
2000039a:	f04f 0000 	mov.w	r0, #0
2000039e:	f380 8811 	msr	BASEPRI, r0
200003a2:	4770      	bx	lr
200003a4:	200003c8 	.word	0x200003c8
200003a8:	200003d0 	.word	0x200003d0

Mrazík

Dne 13.8.2016 v 07:47 Jaroslav Buchta napsal(a):
> Zdravim,
>
> nevim jak donutit compiler, aby mi neprehazel posloupnost operaci v
> nasledujici funkci
>
> inline  void EnterCritical() __attribute__( ( always_inline ) );
> inline  void ExitCritical() __attribute__( ( always_inline ) );
>
> ...