atomic.c File Reference
Include dependency graph for atomic.c:
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Functions | |
| void | atomic_inc (atomic_t *counter) |
| increment atomic counter without interruption. More... | |
| __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. More... | |
| __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\ ") | |
Function Documentation
| __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().
| __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\" | |||
| ) |
| void atomic_dec | ( | atomic_t * | counter | ) |
decrement atomic counter without interruption.
locks interrupts except NMI, decrements count then restores interrupts.
- Parameters
-
counter the counter resource to be decremented
- See also
- atomic_inc
| void atomic_inc | ( | atomic_t * | counter | ) |
increment atomic counter without interruption.
locks interrupts except NMI, increments count then restores interrupts.
- Parameters
-
counter the counter resource to be incremented
- See also
- atomic_dec
Referenced by sem_post().
