diff options
Diffstat (limited to 'cpukit/score/cpu/i386/rtems/score/interrupts.h')
-rw-r--r-- | cpukit/score/cpu/i386/rtems/score/interrupts.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/cpukit/score/cpu/i386/rtems/score/interrupts.h b/cpukit/score/cpu/i386/rtems/score/interrupts.h new file mode 100644 index 0000000000..b6b541fb0e --- /dev/null +++ b/cpukit/score/cpu/i386/rtems/score/interrupts.h @@ -0,0 +1,79 @@ +/** + * @file rtems/score/interrupts.h + */ + +/* + * i386 interrupt macros. + * + * Formerly contained in and extracted from libcpu/i386/cpu.h + * + * COPYRIGHT (c) 1998 valette@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + * + * Applications must not include this file directly. + */ + +#ifndef _RTEMS_SCORE_INTERRUPTS_H +#define _RTEMS_SCORE_INTERRUPTS_H + +#ifndef ASM + +struct __rtems_raw_irq_connect_data__; + +typedef void (*rtems_raw_irq_hdl) (void); +typedef void (*rtems_raw_irq_enable) (const struct __rtems_raw_irq_connect_data__*); +typedef void (*rtems_raw_irq_disable) (const struct __rtems_raw_irq_connect_data__*); +typedef int (*rtems_raw_irq_is_enabled) (const struct __rtems_raw_irq_connect_data__*); + +/* + * Interrupt Level Macros + */ + +#define i386_disable_interrupts( _level ) \ + { \ + __asm__ volatile ( "pushf ; \ + cli ; \ + pop %0" \ + : "=rm" ((_level)) \ + ); \ + } + +#define i386_enable_interrupts( _level ) \ + { \ + __asm__ volatile ( "push %0 ; \ + popf" \ + : : "rm" ((_level)) : "cc" \ + ); \ + } + +#define i386_flash_interrupts( _level ) \ + { \ + __asm__ volatile ( "push %0 ; \ + popf ; \ + cli" \ + : : "rm" ((_level)) : "cc" \ + ); \ + } + +#define i386_get_interrupt_level( _level ) \ + do { \ + register uint32_t _eflags; \ + \ + __asm__ volatile ( "pushf ; \ + pop %0" \ + : "=rm" ((_eflags)) \ + ); \ + \ + _level = (_eflags & EFLAGS_INTR_ENABLE) ? 0 : 1; \ + } while (0) + +#define _CPU_ISR_Disable( _level ) i386_disable_interrupts( _level ) +#define _CPU_ISR_Enable( _level ) i386_enable_interrupts( _level ) + +#endif +#endif |