[8d830fae] | 1 | /** |
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| 2 | * @file |
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| 3 | * @ingroup sparc_leon2 |
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| 4 | * @brief Installs an interrupt vector on the SPARC simulator |
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| 5 | */ |
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| 6 | |
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[bec7ba52] | 7 | /* set_vector |
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| 8 | * |
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| 9 | * This routine installs an interrupt vector on the SPARC simulator. |
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| 10 | * |
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| 11 | * INPUT PARAMETERS: |
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| 12 | * handler - interrupt handler entry point |
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| 13 | * vector - vector number |
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| 14 | * type - 0 indicates raw hardware connect |
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| 15 | * 1 indicates RTEMS interrupt connect |
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| 16 | * |
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| 17 | * OUTPUT PARAMETERS: NONE |
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| 18 | * |
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| 19 | * RETURNS: |
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| 20 | * address of previous interrupt handler |
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| 21 | * |
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| 22 | * COPYRIGHT (c) 1989-1998. |
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| 23 | * On-Line Applications Research Corporation (OAR). |
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| 24 | * |
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| 25 | * The license and distribution terms for this file may be |
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| 26 | * found in the file LICENSE in this distribution or at |
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| 27 | * http://www.rtems.com/license/LICENSE. |
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| 28 | * |
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| 29 | * Ported to LEON implementation of the SPARC by On-Line Applications |
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[44b06ca] | 30 | * Research Corporation (OAR) under contract to the European Space |
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[bec7ba52] | 31 | * Agency (ESA). |
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| 32 | * |
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[44b06ca] | 33 | * LEON modifications of respective RTEMS file: COPYRIGHT (c) 1995. |
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[bec7ba52] | 34 | * European Space Agency. |
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| 35 | */ |
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| 36 | |
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| 37 | #include <bsp.h> |
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| 38 | |
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| 39 | rtems_isr_entry set_vector( /* returns old vector */ |
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| 40 | rtems_isr_entry handler, /* isr routine */ |
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| 41 | rtems_vector_number vector, /* vector number */ |
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| 42 | int type /* RTEMS or RAW intr */ |
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| 43 | ) |
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| 44 | { |
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| 45 | rtems_isr_entry previous_isr; |
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| 46 | uint32_t real_trap; |
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| 47 | uint32_t source; |
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| 48 | |
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| 49 | if ( type ) |
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| 50 | rtems_interrupt_catch( handler, vector, &previous_isr ); |
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[44b06ca] | 51 | else |
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[bec7ba52] | 52 | _CPU_ISR_install_raw_handler( vector, handler, (void *)&previous_isr ); |
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| 53 | |
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| 54 | real_trap = SPARC_REAL_TRAP_NUMBER( vector ); |
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| 55 | |
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| 56 | if ( LEON_INT_TRAP( real_trap ) ) { |
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[44b06ca] | 57 | |
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[bec7ba52] | 58 | source = LEON_TRAP_SOURCE( real_trap ); |
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| 59 | |
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| 60 | LEON_Clear_interrupt( source ); |
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| 61 | LEON_Unmask_interrupt( source ); |
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| 62 | } |
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| 63 | |
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| 64 | return previous_isr; |
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| 65 | } |
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