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/* int-test.S. Test of Or1ksim interrupt controller
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/* int-test.S. Test of Or1ksim interrupt handling
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Copyright (C) 1999-2006 OpenCores
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Copyright (C) 1999-2006 OpenCores
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Copyright (C) 2010 Embecosm Limited
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Copyright (C) 2010 Embecosm Limited
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Contributors various OpenCores participants
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Contributors various OpenCores participants
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/* ----------------------------------------------------------------------------
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/* ----------------------------------------------------------------------------
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This code is commented throughout for use with Doxygen.
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This code is commented throughout for use with Doxygen.
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--------------------------------------------------------------------------*/
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--------------------------------------------------------------------------*/
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/* Within the test we'll use following global variables:
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/* NOTE. This is not a test of the Programmable Interrupt Controller.
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Within the test we'll use following global variables:
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r16 interrupt counter
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r16 interrupt counter
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r17 current tick timer comparison counter
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r17 current tick timer comparison counter
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r18 sanity counter
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r18 sanity counter
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r19 loop counter
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r19 loop counter
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r23 RAM_START
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r23 RAM_START
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r25-r31 used by int handler
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r25-r31 used by int handler
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The test do the following:
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The test do the following:
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We set up the tick timer to trigger once and then we trigger interrupts incrementally
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We set up the tick timer to trigger once and then we trigger interrupts
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on every cycle in the specified test program; on interrupt handler we check if data computed
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incrementally on every cycle in the specified test program; on interrupt
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so far exactly matches precalculated values. If interrupt has returned incorreclty, we can
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handler we check if data computed so far exactly matches precalculated
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detect this using assertion routine at the end.
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values. If interrupt has returned incorreclty, we can detect this using
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assertion routine at the end.
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*/
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*/
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#include "spr-defs.h"
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#include "spr-defs.h"
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#include "board.h"
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#include "board.h"
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