brickOS Kernel Developer v0.9.0
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Go to the source code of this file.
Functions | |
void | atomic_inc (atomic_t *counter) |
increment atomic counter without interruption. | |
__asm__ ("\n\ .text\n\ .globl _atomic_inc\n\ _atomic_inc:\n\ stc ccr, r1h ; save flags\n\ orc #0x80, ccr ; disable all but NMI\n\ mov.b @r0, r1l\n\ inc r1l\n\ mov.b r1l, @r0\n\ ldc r1h, ccr ; restore flags\n\ rts\n\ ") | |
void | atomic_dec (atomic_t *counter) |
decrement atomic counter without interruption. | |
__asm__ ("\n\ .text\n\ .globl _atomic_dec\n\ _atomic_dec:\n\ stc ccr, r1h\n\ orc #0x80, ccr\n\ mov.b @r0, r1l\n\ dec r1l\n\ mov.b r1l, @r0\n\ ldc r1h, ccr\n\ rts\n\ ") | |
__asm__ | ( | "\n\.text\n\.globl _atomic_dec\n\ _atomic_dec:\n\ stc | ccr, |
r1h\n\ orc # | 0x80, | ||
ccr\n\ mov.b @ | r0, | ||
r1l\n\ dec r1l\n\ mov.b | r1l, | ||
@r0\n\ ldc | r1h, | ||
ccr\n\ rts\n\" | |||
) |
__asm__ | ( | "\n\.text\n\.globl _atomic_inc\n\ _atomic_inc:\n\ stc | ccr, |
r1h ;save flags\n\ orc # | 0x80, | ||
ccr ;disable all but NMI\n\ mov.b @ | r0, | ||
r1l\n\ inc r1l\n\ mov.b | r1l, | ||
@r0\n\ ldc | r1h, | ||
ccr ;restore flags\n\ rts\n\" | |||
) |
Referenced by dbutton(), disable_irqs(), enable_irqs(), lcd_clear(), lcd_hide(), lcd_show(), power_init(), power_off(), sound_playing(), and sound_system().
void atomic_dec | ( | atomic_t * | counter | ) |
decrement atomic counter without interruption.
locks interrupts except NMI, decrements count then restores interrupts.
counter | the counter resource to be decremented |
void atomic_inc | ( | atomic_t * | counter | ) |
increment atomic counter without interruption.
locks interrupts except NMI, increments count then restores interrupts.
counter | the counter resource to be incremented |
Referenced by sem_post().