1 | /** |
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2 | * @file |
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3 | * @ingroup sparc_leon3 |
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4 | * @brief Install an interrupt vector on SPARC |
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5 | */ |
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6 | |
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7 | /* This routine installs an interrupt vector on the SPARC simulator. |
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8 | * |
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9 | * INPUT PARAMETERS: |
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10 | * handler - interrupt handler entry point |
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11 | * vector - vector number |
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12 | * type - 0 indicates raw hardware connect |
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13 | * 1 indicates RTEMS interrupt connect |
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14 | * |
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15 | * OUTPUT PARAMETERS: NONE |
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16 | * |
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17 | * RETURNS: |
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18 | * address of previous interrupt handler |
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19 | */ |
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20 | |
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21 | /* COPYRIGHT (c) 1989-1998. |
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22 | * On-Line Applications Research Corporation (OAR). |
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23 | * |
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24 | * The license and distribution terms for this file may be |
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25 | * found in the file LICENSE in this distribution or at |
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26 | * http://www.rtems.org/license/LICENSE. |
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27 | * |
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28 | * Ported to LEON implementation of the SPARC by On-Line Applications |
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29 | * Research Corporation (OAR) under contract to the European Space |
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30 | * Agency (ESA). |
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31 | * |
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32 | * LEON modifications of respective RTEMS file: COPYRIGHT (c) 1995. |
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33 | * European Space Agency. |
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34 | */ |
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35 | |
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36 | #include <bsp.h> |
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37 | |
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38 | rtems_isr_entry set_vector( /* returns old vector */ |
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39 | rtems_isr_entry handler, /* isr routine */ |
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40 | rtems_vector_number vector, /* vector number */ |
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41 | int type /* RTEMS or RAW intr */ |
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42 | ) |
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43 | { |
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44 | rtems_isr_entry previous_isr; |
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45 | uint32_t real_trap; |
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46 | uint32_t source; |
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47 | |
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48 | if ( type ) |
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49 | rtems_interrupt_catch( handler, vector, &previous_isr ); |
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50 | else |
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51 | _CPU_ISR_install_raw_handler( vector, handler, (void *)&previous_isr ); |
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52 | |
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53 | real_trap = SPARC_REAL_TRAP_NUMBER( vector ); |
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54 | |
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55 | if ( LEON_INT_TRAP( real_trap ) ) { |
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56 | |
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57 | source = LEON_TRAP_SOURCE( real_trap ); |
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58 | |
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59 | LEON_Clear_interrupt( source ); |
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60 | LEON_Unmask_interrupt( source ); |
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61 | } |
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62 | |
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63 | return previous_isr; |
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64 | } |
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