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i386: prepare for paravirtualized interrupts

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This commit is contained in:
Gedare Bloom
2016-01-08 16:54:20 -05:00
parent 505dc617c8
commit 3267f9580f
4 changed files with 21 additions and 4 deletions
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5
c/src/lib/libbsp/i386/pc386/startup/bsp_fatal_halt.c
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@@ -11,10 +11,9 @@
void _CPU_Fatal_halt(uint32_t source, uint32_t error)
{
uint32_t _error_lvalue = ( _error );
__asm__ volatile (
"cli ; movl %0,%%eax ; hlt"
: "=r" ((_error_lvalue))
: "0" ((_error_lvalue))
: "=r" ((error))
: "0" ((error))
);
}

4
cpukit/score/cpu/i386/cpu.c
View File

@@ -115,7 +115,11 @@ uint32_t _CPU_ISR_Get_level( void )
{
uint32_t level;
#if !defined(RTEMS_PARAVIRT)
i386_get_interrupt_level( level );
#else
level = i386_get_interrupt_level();
#endif
return level;
}

7
cpukit/score/cpu/i386/rtems/score/cpu.h
View File

@@ -395,6 +395,7 @@ extern Context_Control_fp _CPU_Null_fp_context;
* + set a particular level
*/
#if !defined(RTEMS_PARAVIRT)
#define _CPU_ISR_Disable( _level ) i386_disable_interrupts( _level )
#define _CPU_ISR_Enable( _level ) i386_enable_interrupts( _level )
@@ -406,6 +407,12 @@ extern Context_Control_fp _CPU_Null_fp_context;
if ( _new_level ) __asm__ volatile ( "cli" ); \
else __asm__ volatile ( "sti" ); \
}
#else
#define _CPU_ISR_Disable( _level ) _level = i386_disable_interrupts( )
#define _CPU_ISR_Enable( _level ) i386_enable_interrupts( _level )
#define _CPU_ISR_Flash( _level ) i386_flash_interrupts( _level )
#define _CPU_ISR_Set_level( _new_level ) i386_set_interrupt_level( _new_level)
#endif
uint32_t _CPU_ISR_Get_level( void );

9
cpukit/score/cpu/i386/rtems/score/interrupts.h
View File

@@ -33,7 +33,7 @@ typedef int (*rtems_raw_irq_is_enabled) (const struct __rtems_raw_irq_connect_d
*
*/
/**@{**/
#if !defined(RTEMS_PARAVIRT)
#define i386_disable_interrupts( _level ) \
{ \
__asm__ volatile ( "pushf ; \
@@ -71,6 +71,13 @@ typedef int (*rtems_raw_irq_is_enabled) (const struct __rtems_raw_irq_connect_d
\
_level = (_eflags & EFLAGS_INTR_ENABLE) ? 0 : 1; \
} while (0)
#else
uint32_t i386_disable_interrupts( void );
void i386_enable_interrupts(uint32_t level);
void i386_flash_interrupts(uint32_t level);
void i386_set_interrupt_level(uint32_t new_level);
uint32_t i386_get_interrupt_level( void );
#endif /* PARAVIRT */
/** @} */