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1949 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2005 Martin Decky
1949 jermar 3
 * 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
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#ifndef KERN_mips32_CONTEXT_OFFSET_H_
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#define KERN_mips32_CONTEXT_OFFSET_H_
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#define OFFSET_SP      0x0
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#define OFFSET_PC      0x4
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#define OFFSET_S0      0x8
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#define OFFSET_S1      0xc
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#define OFFSET_S2      0x10
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#define OFFSET_S3      0x14
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#define OFFSET_S4      0x18
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#define OFFSET_S5      0x1c
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#define OFFSET_S6      0x20
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#define OFFSET_S7      0x24
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#define OFFSET_S8      0x28
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#define OFFSET_GP      0x2c
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#ifdef KERNEL
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# define OFFSET_IPL     0x30
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#else
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# define OFFSET_TLS     0x30
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# define OFFSET_F20     0x34
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# define OFFSET_F21     0x38
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# define OFFSET_F22     0x3c
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# define OFFSET_F23     0x40
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# define OFFSET_F24     0x44
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# define OFFSET_F25     0x48
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# define OFFSET_F26     0x4c
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# define OFFSET_F27     0x50
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# define OFFSET_F28     0x54
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# define OFFSET_F29     0x58
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# define OFFSET_F30     0x5c
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#endif /* KERNEL */
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2089 decky 63
/* istate_t */
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#define EOFFSET_AT     0x0
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#define EOFFSET_V0     0x4
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#define EOFFSET_V1     0x8
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#define EOFFSET_A0     0xc
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#define EOFFSET_A1     0x10
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#define EOFFSET_A2     0x14
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#define EOFFSET_A3     0x18
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#define EOFFSET_T0     0x1c
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#define EOFFSET_T1     0x20
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#define EOFFSET_T2     0x24
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#define EOFFSET_T3     0x28
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#define EOFFSET_T4     0x2c
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#define EOFFSET_T5     0x30
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#define EOFFSET_T6     0x34
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#define EOFFSET_T7     0x38
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#define EOFFSET_T8     0x3c
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#define EOFFSET_T9     0x40
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#define EOFFSET_GP     0x44
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#define EOFFSET_SP     0x48
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#define EOFFSET_RA     0x4c
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#define EOFFSET_LO     0x50
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#define EOFFSET_HI     0x54
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#define EOFFSET_STATUS 0x58
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#define EOFFSET_EPC    0x5c
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#define EOFFSET_K1     0x60
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#define REGISTER_SPACE 104  /* respect stack alignment */
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#ifdef __ASM__
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#include <arch/asm/regname.h>
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# ctx: address of the structure with saved context
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.macro CONTEXT_SAVE_ARCH_CORE ctx:req
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    sw $s0,OFFSET_S0(\ctx)
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    sw $s1,OFFSET_S1(\ctx)
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    sw $s2,OFFSET_S2(\ctx)
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    sw $s3,OFFSET_S3(\ctx)
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    sw $s4,OFFSET_S4(\ctx)
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    sw $s5,OFFSET_S5(\ctx)
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    sw $s6,OFFSET_S6(\ctx)
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    sw $s7,OFFSET_S7(\ctx)
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    sw $s8,OFFSET_S8(\ctx)
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    sw $gp,OFFSET_GP(\ctx)
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#ifndef KERNEL
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    sw $k1,OFFSET_TLS(\ctx)
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#ifdef CONFIG_FPU
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    mfc1 $t0,$20
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    sw $t0, OFFSET_F20(\ctx)
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    mfc1 $t0,$21
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    sw $t0, OFFSET_F21(\ctx)
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    mfc1 $t0,$22
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    sw $t0, OFFSET_F22(\ctx)
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    mfc1 $t0,$23
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    sw $t0, OFFSET_F23(\ctx)
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    mfc1 $t0,$24
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    sw $t0, OFFSET_F24(\ctx)
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    mfc1 $t0,$25
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    sw $t0, OFFSET_F25(\ctx)
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    mfc1 $t0,$26
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    sw $t0, OFFSET_F26(\ctx)
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    mfc1 $t0,$27
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    sw $t0, OFFSET_F27(\ctx)
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    mfc1 $t0,$28
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    sw $t0, OFFSET_F28(\ctx)
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    mfc1 $t0,$29
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    sw $t0, OFFSET_F29(\ctx)
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    mfc1 $t0,$30
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    sw $t0, OFFSET_F30(\ctx)
3880 decky 144
#endif /* CONFIG_FPU */
2779 cejka 145
#endif /* KERNEL */
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    sw $ra,OFFSET_PC(\ctx)
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    sw $sp,OFFSET_SP(\ctx)
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.endm
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# ctx: address of the structure with saved context
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.macro CONTEXT_RESTORE_ARCH_CORE ctx:req
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    lw $s0,OFFSET_S0(\ctx)
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    lw $s1,OFFSET_S1(\ctx)
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    lw $s2,OFFSET_S2(\ctx)
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    lw $s3,OFFSET_S3(\ctx)
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    lw $s4,OFFSET_S4(\ctx)
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    lw $s5,OFFSET_S5(\ctx)
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    lw $s6,OFFSET_S6(\ctx)
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    lw $s7,OFFSET_S7(\ctx)
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    lw $s8,OFFSET_S8(\ctx)
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    lw $gp,OFFSET_GP(\ctx)
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#ifndef KERNEL
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    lw $k1,OFFSET_TLS(\ctx)
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3880 decky 166
#ifdef CONFIG_FPU
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    lw $t0, OFFSET_F20(\ctx)
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    mtc1 $t0,$20
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    lw $t0, OFFSET_F21(\ctx)
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    mtc1 $t0,$21
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    lw $t0, OFFSET_F22(\ctx)
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    mtc1 $t0,$22
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    lw $t0, OFFSET_F23(\ctx)
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    mtc1 $t0,$23
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    lw $t0, OFFSET_F24(\ctx)
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    mtc1 $t0,$24
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182
    lw $t0, OFFSET_F25(\ctx)
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    mtc1 $t0,$25
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    lw $t0, OFFSET_F26(\ctx)
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    mtc1 $t0,$26
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188
    lw $t0, OFFSET_F27(\ctx)
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    mtc1 $t0,$27
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    lw $t0, OFFSET_F28(\ctx)
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    mtc1 $t0,$28
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    lw $t0, OFFSET_F29(\ctx)
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    mtc1 $t0,$29
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    lw $t0, OFFSET_F30(\ctx)
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    mtc1 $t0,$30
3880 decky 199
#endif /* CONFIG_FPU */
2779 cejka 200
#endif /* KERNEL */
3880 decky 201
 
2779 cejka 202
    lw $ra,OFFSET_PC(\ctx)
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    lw $sp,OFFSET_SP(\ctx)
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.endm
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1949 jermar 206
#endif
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#endif