blob: b1cf2e5c0d5b2bbcae53295c86d50e1644aefb8e (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/*
* ISR Handler
*
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/score/isr.h>
#include <rtems/score/stack.h>
#include <rtems/score/interr.h>
#include <rtems/score/wkspace.h>
/* _ISR_Handler_initialization
*
* This routine initializes the ISR handler.
*
* Input parameters: NONE
*
* Output parameters: NONE
*/
void _ISR_Handler_initialization( void )
{
_ISR_Signals_to_thread_executing = FALSE;
_ISR_Nest_level = 0;
_ISR_Vector_table = _Workspace_Allocate_or_fatal_error(
sizeof(ISR_Handler_entry) * ISR_NUMBER_OF_VECTORS
);
_CPU_Initialize_vectors();
#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE )
if ( _CPU_Table.interrupt_stack_size < STACK_MINIMUM_SIZE )
_Internal_error_Occurred(
INTERNAL_ERROR_CORE,
TRUE,
INTERNAL_ERROR_INTERRUPT_STACK_TOO_SMALL
);
_CPU_Interrupt_stack_low =
_Workspace_Allocate_or_fatal_error( _CPU_Table.interrupt_stack_size );
_CPU_Interrupt_stack_high = _Addresses_Add_offset(
_CPU_Interrupt_stack_low,
_CPU_Table.interrupt_stack_size
);
#endif
#if ( CPU_HAS_HARDWARE_INTERRUPT_STACK == TRUE )
_CPU_Install_interrupt_stack();
#endif
}
|