#include "config.h"
#include <atomic.h>
Include dependency graph for atomic.c:
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().
brickOS is released under the
Mozilla Public License.
Original code copyright 1998-2005 by the authors. |