blob: 7c76c2347fdfcc5af3a156a025e3bd07ca98cabe (
plain)
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
|
/* set_vector
*
* This routine installs an interrupt vector on the SPARC simulator.
*
* INPUT PARAMETERS:
* handler - interrupt handler entry point
* vector - vector number
* type - 0 indicates raw hardware connect
* 1 indicates RTEMS interrupt connect
*
* OUTPUT PARAMETERS: NONE
*
* RETURNS:
* address of previous interrupt 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.
*
* Ported to ERC32 implementation of the SPARC by On-Line Applications
* Research Corporation (OAR) under contract to the European Space
* Agency (ESA).
*
* ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995.
* European Space Agency.
*/
#include <bsp.h>
rtems_isr_entry set_vector( /* returns old vector */
rtems_isr_entry handler, /* isr routine */
rtems_vector_number vector, /* vector number */
int type /* RTEMS or RAW intr */
)
{
rtems_isr_entry previous_isr;
uint32_t real_trap;
uint32_t source;
if ( type )
rtems_interrupt_catch( handler, vector, &previous_isr );
else
_CPU_ISR_install_raw_handler( vector, handler, (void *)&previous_isr );
real_trap = SPARC_REAL_TRAP_NUMBER( vector );
if ( ERC32_Is_MEC_Trap( real_trap ) ) {
source = ERC32_TRAP_SOURCE( real_trap );
ERC32_Clear_interrupt( source );
ERC32_Unmask_interrupt( source );
}
return previous_isr;
}
|