0,0 → 1,311 |
# |
# Copyright (C) 2003-2004 Jakub Jermar |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
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#include <arch/asm/regname.h> |
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.text |
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.macro cp0_read reg |
mfc0 $2,\reg |
j $31 |
nop |
.endm |
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.macro cp0_write reg |
mtc0 $4,\reg |
j $31 |
nop |
.endm |
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.set noat |
.set noreorder |
.set nomacro |
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.global cp0_index_read |
.global cp0_index_write |
.global cp0_random_read |
.global cp0_entry_lo0_read |
.global cp0_entry_lo0_write |
.global cp0_entry_lo1_read |
.global cp0_entry_lo1_write |
.global cp0_context_read |
.global cp0_context_write |
.global cp0_pagemask_read |
.global cp0_pagemask_write |
.global cp0_wired_read |
.global cp0_wired_write |
.global cp0_badvaddr_read |
.global cp0_count_read |
.global cp0_count_write |
.global cp0_entry_hi_read |
.global cp0_entry_hi_write |
.global cp0_compare_read |
.global cp0_compare_write |
.global cp0_status_read |
.global cp0_status_write |
.global cp0_cause_read |
.global cp0_cause_write |
.global cp0_epc_read |
.global cp0_epc_write |
.global cp0_prid_read |
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cp0_index_read: cp0_read $0 |
cp0_index_write: cp0_write $0 |
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cp0_random_read: cp0_read $1 |
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cp0_entry_lo0_read: cp0_read $2 |
cp0_entry_lo0_write: cp0_write $2 |
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cp0_entry_lo1_read: cp0_read $3 |
cp0_entry_lo1_write: cp0_write $3 |
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cp0_context_read: cp0_read $4 |
cp0_context_write: cp0_write $4 |
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cp0_pagemask_read: cp0_read $5 |
cp0_pagemask_write: cp0_write $5 |
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cp0_wired_read: cp0_read $6 |
cp0_wired_write: cp0_write $6 |
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cp0_badvaddr_read: cp0_read $8 |
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cp0_count_read: cp0_read $9 |
cp0_count_write: cp0_write $9 |
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cp0_entry_hi_read: cp0_read $10 |
cp0_entry_hi_write: cp0_write $10 |
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cp0_compare_read: cp0_read $11 |
cp0_compare_write: cp0_write $11 |
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cp0_status_read: cp0_read $12 |
cp0_status_write: cp0_write $12 |
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cp0_cause_read: cp0_read $13 |
cp0_cause_write: cp0_write $13 |
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cp0_epc_read: cp0_read $14 |
cp0_epc_write: cp0_write $14 |
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cp0_prid_read: cp0_read $15 |
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.global cpu_halt |
cpu_halt: |
j cpu_halt |
nop |
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.global memsetb |
memsetb: |
j _memsetb |
nop |
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.global memcpy |
memcpy: |
j _memcpy |
nop |
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.macro fpu_gp_save reg ctx |
mfc1 $t0,$\reg |
sw $t0, \reg*4(\ctx) |
.endm |
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.macro fpu_gp_restore reg ctx |
lw $t0, \reg*4(\ctx) |
mtc1 $t0,$\reg |
.endm |
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.macro fpu_ct_save reg ctx |
cfc1 $t0,$1 |
sw $t0, (\reg+32)*4(\ctx) |
.endm |
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.macro fpu_ct_restore reg ctx |
lw $t0, (\reg+32)*4(\ctx) |
ctc1 $t0,$\reg |
.endm |
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.global fpu_context_save |
fpu_context_save: |
#ifdef HAVE_FPU |
fpu_gp_save 0,$a0 |
fpu_gp_save 1,$a0 |
fpu_gp_save 2,$a0 |
fpu_gp_save 3,$a0 |
fpu_gp_save 4,$a0 |
fpu_gp_save 5,$a0 |
fpu_gp_save 6,$a0 |
fpu_gp_save 7,$a0 |
fpu_gp_save 8,$a0 |
fpu_gp_save 9,$a0 |
fpu_gp_save 10,$a0 |
fpu_gp_save 11,$a0 |
fpu_gp_save 12,$a0 |
fpu_gp_save 13,$a0 |
fpu_gp_save 14,$a0 |
fpu_gp_save 15,$a0 |
fpu_gp_save 16,$a0 |
fpu_gp_save 17,$a0 |
fpu_gp_save 18,$a0 |
fpu_gp_save 19,$a0 |
fpu_gp_save 20,$a0 |
fpu_gp_save 21,$a0 |
fpu_gp_save 22,$a0 |
fpu_gp_save 23,$a0 |
fpu_gp_save 24,$a0 |
fpu_gp_save 25,$a0 |
fpu_gp_save 26,$a0 |
fpu_gp_save 27,$a0 |
fpu_gp_save 28,$a0 |
fpu_gp_save 29,$a0 |
fpu_gp_save 30,$a0 |
fpu_gp_save 31,$a0 |
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fpu_ct_save 1,$a0 |
fpu_ct_save 2,$a0 |
fpu_ct_save 3,$a0 |
fpu_ct_save 4,$a0 |
fpu_ct_save 5,$a0 |
fpu_ct_save 6,$a0 |
fpu_ct_save 7,$a0 |
fpu_ct_save 8,$a0 |
fpu_ct_save 9,$a0 |
fpu_ct_save 10,$a0 |
fpu_ct_save 11,$a0 |
fpu_ct_save 12,$a0 |
fpu_ct_save 13,$a0 |
fpu_ct_save 14,$a0 |
fpu_ct_save 15,$a0 |
fpu_ct_save 16,$a0 |
fpu_ct_save 17,$a0 |
fpu_ct_save 18,$a0 |
fpu_ct_save 19,$a0 |
fpu_ct_save 20,$a0 |
fpu_ct_save 21,$a0 |
fpu_ct_save 22,$a0 |
fpu_ct_save 23,$a0 |
fpu_ct_save 24,$a0 |
fpu_ct_save 25,$a0 |
fpu_ct_save 26,$a0 |
fpu_ct_save 27,$a0 |
fpu_ct_save 28,$a0 |
fpu_ct_save 29,$a0 |
fpu_ct_save 30,$a0 |
fpu_ct_save 31,$a0 |
#endif |
j $ra |
nop |
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.global fpu_context_restore |
fpu_context_restore: |
#ifdef HAVE_FPU |
fpu_gp_restore 0,$a0 |
fpu_gp_restore 1,$a0 |
fpu_gp_restore 2,$a0 |
fpu_gp_restore 3,$a0 |
fpu_gp_restore 4,$a0 |
fpu_gp_restore 5,$a0 |
fpu_gp_restore 6,$a0 |
fpu_gp_restore 7,$a0 |
fpu_gp_restore 8,$a0 |
fpu_gp_restore 9,$a0 |
fpu_gp_restore 10,$a0 |
fpu_gp_restore 11,$a0 |
fpu_gp_restore 12,$a0 |
fpu_gp_restore 13,$a0 |
fpu_gp_restore 14,$a0 |
fpu_gp_restore 15,$a0 |
fpu_gp_restore 16,$a0 |
fpu_gp_restore 17,$a0 |
fpu_gp_restore 18,$a0 |
fpu_gp_restore 19,$a0 |
fpu_gp_restore 20,$a0 |
fpu_gp_restore 21,$a0 |
fpu_gp_restore 22,$a0 |
fpu_gp_restore 23,$a0 |
fpu_gp_restore 24,$a0 |
fpu_gp_restore 25,$a0 |
fpu_gp_restore 26,$a0 |
fpu_gp_restore 27,$a0 |
fpu_gp_restore 28,$a0 |
fpu_gp_restore 29,$a0 |
fpu_gp_restore 30,$a0 |
fpu_gp_restore 31,$a0 |
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fpu_ct_restore 1,$a0 |
fpu_ct_restore 2,$a0 |
fpu_ct_restore 3,$a0 |
fpu_ct_restore 4,$a0 |
fpu_ct_restore 5,$a0 |
fpu_ct_restore 6,$a0 |
fpu_ct_restore 7,$a0 |
fpu_ct_restore 8,$a0 |
fpu_ct_restore 9,$a0 |
fpu_ct_restore 10,$a0 |
fpu_ct_restore 11,$a0 |
fpu_ct_restore 12,$a0 |
fpu_ct_restore 13,$a0 |
fpu_ct_restore 14,$a0 |
fpu_ct_restore 15,$a0 |
fpu_ct_restore 16,$a0 |
fpu_ct_restore 17,$a0 |
fpu_ct_restore 18,$a0 |
fpu_ct_restore 19,$a0 |
fpu_ct_restore 20,$a0 |
fpu_ct_restore 21,$a0 |
fpu_ct_restore 22,$a0 |
fpu_ct_restore 23,$a0 |
fpu_ct_restore 24,$a0 |
fpu_ct_restore 25,$a0 |
fpu_ct_restore 26,$a0 |
fpu_ct_restore 27,$a0 |
fpu_ct_restore 28,$a0 |
fpu_ct_restore 29,$a0 |
fpu_ct_restore 30,$a0 |
fpu_ct_restore 31,$a0 |
#endif |
j $ra |
nop |
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# THIS IS USERSPACE CODE |
.global utext |
utext: |
j $31 |
nop |
utext_end: |
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.data |
.global utext_size |
utext_size: |
.long utext_end-utext |
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