diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/erc32/startup/setvec.c')
-rw-r--r-- | c/src/lib/libbsp/sparc/erc32/startup/setvec.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/erc32/startup/setvec.c b/c/src/lib/libbsp/sparc/erc32/startup/setvec.c new file mode 100644 index 0000000000..3ba8c4fdeb --- /dev/null +++ b/c/src/lib/libbsp/sparc/erc32/startup/setvec.c @@ -0,0 +1,63 @@ +/* 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) 1989-1997. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may in + * the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * 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. + * + * $Id$ + */ + +#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; + unsigned32 real_trap; + unsigned32 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; +} + |