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151 lines
3.8 KiB
151 lines
3.8 KiB
/* |
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* Copyright 2016, Imagination Technologies Limited and/or its |
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* affiliated group companies. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* 3. Neither the name of the copyright holder nor the names of its |
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* contributors may be used to endorse or promote products derived from this |
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* software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* ************ PLEASE READ ME !!!! **************** |
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This file is missing from $MIPS_ELF_ROOT/share/mips/hal |
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Future toolchain versions will have this file included and this local copy will |
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be no longer needed. |
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Note the above copyright/license is 3 Clause BSD and as such is compatible with LGPLv2.1 |
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as such we grant licensing this file under LGPLv2.1 (See the file LICENSE in the top level |
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directory for more details) as well. |
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Thanks for reading. |
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*/ |
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.set nomips16 |
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#include <mips/asm.h> |
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#include <mips/regdef.h> |
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#include <mips/m32c0.h> |
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#include <mips/hal.h> |
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#include <mips/endian.h> |
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# |
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# FUNCTION: _dsp_save |
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# |
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# DESCRIPTION: save the DSP context. |
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# |
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# RETURNS: int |
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# |
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# 0: No context saved |
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# CTX_*: Type of conext stored |
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# |
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LEAF(_dsp_save) |
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PTR_S zero, LINKCTX_NEXT(a0) |
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move v0, zero |
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# Test for DSP support |
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mfc0 t0, C0_CONFIG3 |
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ext t0, t0, CFG3_DSPP_SHIFT, 1 |
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beqz t0, 1f |
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# Test for DSP enabled |
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mfc0 t0, C0_STATUS |
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ext t0, t0, SR_MX_SHIFT, 1 |
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beqz t0, 1f |
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lui v0, %hi(LINKCTX_TYPE_DSP) |
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addiu v0, v0, %lo(LINKCTX_TYPE_DSP) |
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.set push |
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.set dsp |
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rddsp t1 |
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mfhi t2, $ac1 |
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mflo t3, $ac1 |
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mfhi t4, $ac2 |
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mflo t5, $ac2 |
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mfhi t6, $ac3 |
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mflo t7, $ac3 |
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.set pop |
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sw t1, DSPCTX_DSPC(a0) |
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sw t2, DSPCTX_HI1(a0) |
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sw t3, DSPCTX_LO1(a0) |
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sw t4, DSPCTX_HI2(a0) |
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sw t5, DSPCTX_LO2(a0) |
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sw t6, DSPCTX_HI3(a0) |
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sw t7, DSPCTX_LO3(a0) |
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REG_S v0, LINKCTX_ID(a0) |
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1: |
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jr ra |
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END(_dsp_save) |
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# |
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# FUNCTION: _dsp_load |
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# |
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# DESCRIPTION: load the DSP context. |
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# |
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# RETURNS: int |
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# |
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# 0: Unrecognised context |
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# CTX_*: Type of context restored |
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# |
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LEAF(_dsp_load) |
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REG_L v0, LINKCTX_ID(a0) |
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lui v1, %hi(LINKCTX_TYPE_DSP) |
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addiu v1, v1, %lo(LINKCTX_TYPE_DSP) |
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bne v0,v1,1f |
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# Test for DSP support |
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mfc0 t0, C0_CONFIG3 |
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ext t0, t0, CFG3_DSPP_SHIFT, 1 |
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beqz t0, 1f |
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# Force on DSP |
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di t3 |
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ehb |
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or t3, t3, SR_MX |
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mtc0 t3, C0_STATUS |
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ehb |
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lw t1, DSPCTX_DSPC(a0) |
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lw t2, DSPCTX_HI1(a0) |
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lw t3, DSPCTX_LO1(a0) |
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lw t4, DSPCTX_HI2(a0) |
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lw t5, DSPCTX_LO2(a0) |
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lw t6, DSPCTX_HI3(a0) |
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lw t7, DSPCTX_LO3(a0) |
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.set push |
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.set dsp |
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wrdsp t1 |
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mthi t2, $ac1 |
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mtlo t3, $ac1 |
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mthi t4, $ac2 |
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mtlo t5, $ac2 |
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mthi t6, $ac3 |
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mtlo t7, $ac3 |
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.set pop |
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jr ra |
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1: |
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# Don't recognise this context, fail |
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move v0, zero |
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jr ra |
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END(_dsp_load)
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