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// #========================================================================
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// #
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// # mcfxxxx_asm.S
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// #
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// # Miscellaneous assembler support functions for an mcfxxxx
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// #
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// #========================================================================
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//=============================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 2008 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//============================================================================
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//###DESCRIPTIONBEGIN####
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//
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// Author(s): bartv
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// Date: 2008-01-14
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//
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//###DESCRIPTIONEND####
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//========================================================================
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#include
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#include
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#include
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.file "mcfxxxx_asm.S"
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#ifdef CYGINT_HAL_M68K_MCFxxxx_SOFTWARE_PROFILE_TIMER
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// See also hal_enable_profile_timer() in mcfxxxx.c
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// This VSR should call __profile_hit() with a single argument,
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// the interrupted PC. The VSR has been installed as a
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// high-priority interrupt source, so there is no need to worry
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// about nested interrupts or an interrupt stack.
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.extern __profile_hit
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FUNC_START(hal_mcfxxxx_profile_vsr)
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// On entry sp[0] holds sr and sp[1] holds the pc.
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// Save the caller-save integer registers. There are no floating
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// point registers to worry about. Make space for the argument
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// to __profile_hit() while we are at it.
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sub.l #20, %sp
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movem.l %d0-%d1/%a0-%a1, 4(%sp)
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// Now pick up the interrupted PC from its new offset and push it
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// on the stack for __profile_hit().
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move.l 24(%sp),(%sp)
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jbsr __profile_hit
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// The timer runs in restart mode, but the interrupt bit has to be reset.
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move.l # (HAL_MCFxxxx_PITx_PCSR_PRE_64 + HAL_MCFxxxx_PITx_PCSR_OVW + \
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HAL_MCFxxxx_PITx_PCSR_PIE + HAL_MCFxxxx_PITx_PCSR_PIF + \
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HAL_MCFxxxx_PITx_PCSR_RLD + HAL_MCFxxxx_PITx_PCSR_EN), %d0
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move.w %d0, HAL_MCFxxxx_PROFILE_TIMER_BASE + HAL_MCFxxxx_PITx_PCSR
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movem.l 4(%sp), %d0-%d1/%a0-%a1
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add.l #20, %sp
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rte
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#endif
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.end
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