/SPARTAN/trunk/arch/mips/src/fmath.c |
---|
0,0 → 1,161 |
/* |
* Copyright (C) 2005 Josef Cejka |
* 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. |
*/ |
#include <arch/fmath.h> |
#include <print.h> |
//TODO: |
#define FMATH_MANTISA_MASK ( 0x000fffffffffffffLL ) |
signed short fmath_get_binary_exponent(double num) |
{ //TODO: |
/* fmath_ld_union_t fmath_ld_union; |
fmath_ld_union.bf = num; |
return (signed short)((((fmath_ld_union.ldd[7])&0x7f)<<4) + (((fmath_ld_union.ldd[6])&0xf0)>>4)) -FMATH_EXPONENT_BIAS; // exponent is 11 bits lenght, so sevent bits is in 8th byte and 4 bits in 7th |
*/ |
return 0; |
} |
double fmath_get_decimal_exponent(double num) |
{ //TODO: |
double value; |
// log10(2)*log2(x) => log10(x) |
/* __asm__ __volatile__ ( \ |
"fldlg2 #load log10(2) \n\t" \ |
"fxch %%st(1) \n\t" \ |
"fyl2x #count st(0)*log2(st(1))->st(1); pop st(0) \n\t" \ |
: "=t" (value) : "0"(num) ); |
*/ return value; |
} |
__u64 fmath_get_binary_mantisa(double num) |
{ //TODO: |
/* union { __u64 _u; double _d;} un = { _d : num }; |
un._u=un._u &(FMATH_MANTISA_MASK); // mask 52 bits of mantisa |
return un._u; |
*/ |
return 0; |
} |
double fmath_fint(double num, double *intp) |
{ //TODO: |
/* fmath_ld_union_t fmath_ld_union_num; |
fmath_ld_union_t fmath_ld_union_int; |
signed short exp; |
__u64 mask,mantisa; |
int i; |
exp=fmath_get_binary_exponent(num); |
if (exp<0) { |
*intp = 0.0; |
*intp = fmath_set_sign(0.0L,fmath_is_negative(num)); |
return num; |
} |
if (exp>51) { |
*intp=num; |
num=0.0; |
num= fmath_set_sign(0.0L,fmath_is_negative(*intp)); |
return num; |
} |
fmath_ld_union_num.bf = num; |
mask = FMATH_MANTISA_MASK>>exp; |
//mantisa = (fmath_get-binary_mantisa(num))&(~mask); |
for (i=0;i<7;i++) { |
// Ugly construction for obtain sign, exponent and integer part from num |
fmath_ld_union_int.ldd[i]=fmath_ld_union_num.ldd[i]&(((~mask)>>(i*8))&0xff); |
} |
fmath_ld_union_int.ldd[6]|=((fmath_ld_union_num.ldd[6])&(0xf0)); |
fmath_ld_union_int.ldd[7]=fmath_ld_union_num.ldd[7]; |
*intp=fmath_ld_union_int.bf; |
return fmath_ld_union_num.bf-fmath_ld_union_int.bf; |
*/ |
return 0.0; |
}; |
double fmath_dpow(double base, double exponent) |
{ //TODO: |
/* double value=1.0; |
if (base<=0.0) return base; |
//2^(x*log2(10)) = 2^y = 10^x |
__asm__ __volatile__ ( \ |
"fyl2x # ST(1):=ST(1)*log2(ST(0)), pop st(0) \n\t " \ |
"fld %%st(0) \n\t" \ |
"frndint \n\t" \ |
"fxch %%st(1) \n\t" \ |
"fsub %%st(1),%%st(0) \n\t" \ |
"f2xm1 # ST := 2^ST -1\n\t" \ |
"fld1 \n\t" \ |
"faddp %%st(0),%%st(1) \n\t" \ |
"fscale #ST:=ST*2^(ST(1))\n\t" \ |
"fstp %%st(1) \n\t" \ |
"" : "=t" (value) : "0" (base), "u" (exponent) ); |
return value; |
*/ |
return 1.0; |
} |
int fmath_is_nan(double num) |
{ |
/* __u16 exp; |
fmath_ld_union_t fmath_ld_union; |
fmath_ld_union.bf = num; |
exp=(((fmath_ld_union.ldd[7])&0x7f)<<4) + (((fmath_ld_union.ldd[6])&0xf0)>>4); // exponent is 11 bits lenght, so sevent bits is in 8th byte and 4 bits in 7th |
if (exp!=0x07ff) return 0; |
if (fmath_get_binary_mantisa(num)>=FMATH_NAN) return 1; |
*/ |
return 0; |
} |
int fmath_is_infinity(double num) |
{ |
/* __u16 exp; |
fmath_ld_union_t fmath_ld_union; |
fmath_ld_union.bf = num; |
exp=(((fmath_ld_union.ldd[7])&0x7f)<<4) + (((fmath_ld_union.ldd[6])&0xf0)>>4); // exponent is 11 bits lenght, so sevent bits is in 8th byte and 4 bits in 7th |
if (exp!=0x07ff) return 0; |
if (fmath_get_binary_mantisa(num)==0x0) return 1; |
*/ return 0; |
} |
/SPARTAN/trunk/arch/mips/src/mm/tlb.c |
---|
0,0 → 1,69 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
#include <arch/mm/tlb.h> |
#include <arch/mm/asid.h> |
#include <mm/tlb.h> |
#include <arch/cp0.h> |
#include <panic.h> |
#include <arch.h> |
void main_bsp(void); |
int bootstrap = 1; |
void tlb_refill(void) |
{ |
if (bootstrap) { |
bootstrap = 0; |
main_bsp(); |
} |
panic("tlb_refill exception\n"); |
} |
void tlb_invalid(void) |
{ |
panic("%X: TLB exception at %X", cp0_badvaddr_read(), THREAD ? THREAD->saved_epc : 0); |
} |
void tlb_invalidate(int asid) |
{ |
pri_t pri; |
pri = cpu_priority_high(); |
// asid_bitmap_reset(); |
// TODO |
cpu_priority_restore(pri); |
} |
/SPARTAN/trunk/arch/mips/src/mm/page.c |
---|
0,0 → 1,46 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
#include <arch/types.h> |
#include <arch/mm/page.h> |
#include <arch/mm/frame.h> |
#include <mm/frame.h> |
#include <mm/page.h> |
#include <memstr.h> |
pte_t *PTL0 = NULL; |
void page_arch_init(void) |
{ |
__address ptl0; |
ptl0 = frame_alloc(FRAME_KA | FRAME_PANIC); |
memsetb(ptl0, FRAME_SIZE, 0); |
SET_PTL0_ADDRESS(KA2PA(ptl0)); |
} |
/SPARTAN/trunk/arch/mips/src/mm/asid.c |
---|
0,0 → 1,56 |
/* |
* Copyright (C) 2005 Martin Decky |
* 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. |
*/ |
#include <arch.h> |
#include <memstr.h> |
/**< Array of threads that have currently some ASID assigned, |
NULL means no thread have ASID with number of that index assigned */ |
struct thread * asids[256]; |
int last_asid; /**< The number of last assigned ASID */ |
int asid_bitmap[32]; /**< Bitmap of ASIDs currently in TLB */ |
/** Cleanup asid_bitmap |
* |
*/ |
void asid_bitmap_reset(void) |
{ |
memsetb(asid_bitmap, sizeof(asid_bitmap), 0); |
} |
/** Initialize manipulating with ASIDs |
* |
*/ |
void init_asids(void) |
{ |
memsetb(asids, sizeof(asids), 0); |
asid_bitmap_reset(); |
last_asid = 0; |
} |
/SPARTAN/trunk/arch/mips/src/mm/frame.c |
---|
0,0 → 1,34 |
/* |
* Copyright (C) 2005 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. |
*/ |
#include <arch/mm/frame.h> |
#include <mm/frame.h> |
void frame_arch_init(void) |
{ |
} |
/SPARTAN/trunk/arch/mips/src/exception.c |
---|
0,0 → 1,126 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
#include <arch/exception.h> |
#include <arch/interrupt.h> |
#include <panic.h> |
#include <arch/cp0.h> |
#include <arch/types.h> |
#include <arch.h> |
#include <debug.h> |
void exception(void) |
{ |
int excno; |
__u32 epc; |
__u32 epc_shift = 0; |
pri_t pri; |
ASSERT(CPU != NULL); |
/* |
* NOTE ON OPERATION ORDERING |
* |
* On entry, cpu_priority_high() must be called before exception bit is cleared. |
* On exit, exception bit must be set before cpu_priority_restore() is called. |
*/ |
pri = cpu_priority_high(); |
epc = cp0_epc_read(); |
cp0_status_write(cp0_status_read() & ~ cp0_status_exl_exception_bit); |
if (THREAD) { |
THREAD->saved_pri = pri; |
THREAD->saved_epc = epc; |
} |
/* decode exception number and process the exception */ |
switch (excno = (cp0_cause_read() >> 2) & 0x1f) { |
case EXC_Int: |
interrupt(); |
break; |
case EXC_TLBL: |
case EXC_TLBS: |
tlb_invalid(); |
break; |
case EXC_Mod: |
panic("unhandled TLB Modification Exception\n"); |
break; |
case EXC_AdEL: |
panic("unhandled Address Error Exception - load or instruction fetch\n"); |
break; |
case EXC_AdES: |
panic("unhandled Address Error Exception - store\n"); |
break; |
case EXC_IBE: |
panic("unhandled Bus Error Exception - fetch instruction\n"); |
break; |
case EXC_DBE: |
panic("unhandled Bus Error Exception - data reference: load or store\n"); |
break; |
case EXC_Bp: |
/* it is necessary to not re-execute BREAK instruction after returning from Exception handler |
(see page 138 in R4000 Manual for more information) */ |
epc_shift = 4; |
break; |
case EXC_RI: |
panic("unhandled Reserved Instruction Exception\n"); |
break; |
case EXC_CpU: |
panic("unhandled Coprocessor Unusable Exception\n"); |
break; |
case EXC_Ov: |
panic("unhandled Arithmetic Overflow Exception\n"); |
break; |
case EXC_Tr: |
panic("unhandled Trap Exception\n"); |
break; |
case EXC_VCEI: |
panic("unhandled Virtual Coherency Exception - instruction\n"); |
break; |
case EXC_FPE: |
panic("unhandled Floating-Point Exception\n"); |
break; |
case EXC_WATCH: |
panic("unhandled reference to WatchHi/WatchLo address\n"); |
break; |
case EXC_VCED: |
panic("unhandled Virtual Coherency Exception - data\n"); |
break; |
default: |
panic("unhandled exception %d\n", excno); |
} |
if (THREAD) { |
pri = THREAD->saved_pri; |
epc = THREAD->saved_epc; |
} |
cp0_epc_write(epc + epc_shift); |
cp0_status_write(cp0_status_read() | cp0_status_exl_exception_bit); |
cpu_priority_restore(pri); |
} |
/SPARTAN/trunk/arch/mips/src/putchar.c |
---|
0,0 → 1,42 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
#include <putchar.h> |
#include <arch/types.h> |
#include <arch/cp0.h> |
#define VIDEORAM 0xB0000000 |
void putchar(const char ch) |
{ |
// __u32 status = cp0_status_read(); |
// cp0_status_write(cp0_status_read() | cp0_status_erl_error_bit); |
*((char *) VIDEORAM) = ch; |
// cp0_status_write(status); |
} |
/SPARTAN/trunk/arch/mips/src/asm.s |
---|
0,0 → 1,169 |
# |
# Copyright (C) 2001-2004 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. |
# |
.text |
.macro cp0_read reg |
mfc0 $2,\reg |
j $31 |
nop |
.endm |
.macro cp0_write reg |
mtc0 $4,\reg |
j $31 |
nop |
.endm |
.set noat |
.set noreorder |
.set nomacro |
.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_hi_read |
.global cp0_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 |
cp0_index_read: cp0_read $0 |
cp0_index_write: cp0_write $0 |
cp0_random_read: cp0_read $1 |
cp0_entry_lo0_read: cp0_read $2 |
cp0_entry_lo0_write: cp0_write $2 |
cp0_entry_lo1_read: cp0_read $3 |
cp0_entry_lo1_write: cp0_write $3 |
cp0_context_read: cp0_read $4 |
cp0_context_write: cp0_write $4 |
cp0_pagemask_read: cp0_read $5 |
cp0_pagemask_write: cp0_write $5 |
cp0_wired_read: cp0_read $6 |
cp0_wired_write: cp0_write $6 |
cp0_badvaddr_read: cp0_read $8 |
cp0_count_read: cp0_read $9 |
cp0_count_write: cp0_write $9 |
cp0_entry_hi_read: cp0_read $10 |
cp0_entry_hi_write: cp0_write $10 |
cp0_compare_read: cp0_read $11 |
cp0_compare_write: cp0_write $11 |
cp0_status_read: cp0_read $12 |
cp0_status_write: cp0_write $12 |
cp0_cause_read: cp0_read $13 |
cp0_cause_write: cp0_write $13 |
cp0_epc_read: cp0_read $14 |
cp0_epc_write: cp0_write $14 |
cp0_prid_read: cp0_read $15 |
.global tlbp |
tlbp: |
tlbp |
j $31 |
nop |
.global tlbr |
tlbr: |
tlbr |
j $31 |
nop |
.global tlbwi |
tlbwi: |
tlbwi |
j $31 |
nop |
.global tlbwr |
tlbwr: |
tlbwr |
j $31 |
nop |
.global cpu_halt |
cpu_halt: |
j cpu_halt |
nop |
.global memsetb |
memsetb: |
j _memsetb |
nop |
.global memcpy |
memcpy: |
j _memcpy |
nop |
# THIS IS USERSPACE CODE |
.global utext |
utext: |
j $31 |
nop |
utext_end: |
.data |
.global utext_size |
utext_size: |
.long utext_end-utext |
/SPARTAN/trunk/arch/mips/src/cpu/cpu.c |
---|
0,0 → 1,95 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
#include <arch/cpu.h> |
#include <cpu.h> |
#include <arch.h> |
#include <arch/cp0.h> |
#include <typedefs.h> |
#include <print.h> |
struct { |
char *vendor; |
char *model; |
} imp_data[] = { |
{ "Invalid", "Invalid" }, /* 0x00 */ |
{ "MIPS", "R2000" }, /* 0x01 */ |
{ "MIPS", "R3000" }, /* 0x02 */ |
{ "MIPS", "R6000" }, /* 0x03 */ |
{ "MIPS", " R4000/R4400" }, /* 0x04 */ |
{ "LSI Logic", "R3000" }, /* 0x05 */ |
{ "MIPS", "R6000A" }, /* 0x06 */ |
{ "IDT", "3051/3052" }, /* 0x07 */ |
{ "Invalid", "Invalid" }, /* 0x08 */ |
{ "MIPS", "R10000/T5" }, /* 0x09 */ |
{ "MIPS", "R4200" }, /* 0x0a */ |
{ "Unknown", "Unknown" }, /* 0x0b */ |
{ "Unknown", "Unknown" }, /* 0x0c */ |
{ "Invalid", "Invalid" }, /* 0x0d */ |
{ "Invalid", "Invalid" }, /* 0x0e */ |
{ "Invalid", "Invalid" }, /* 0x0f */ |
{ "MIPS", "R8000" }, /* 0x10 */ |
{ "Invalid", "Invalid" }, /* 0x11 */ |
{ "Invalid", "Invalid" }, /* 0x12 */ |
{ "Invalid", "Invalid" }, /* 0x13 */ |
{ "Invalid", "Invalid" }, /* 0x14 */ |
{ "Invalid", "Invalid" }, /* 0x15 */ |
{ "Invalid", "Invalid" }, /* 0x16 */ |
{ "Invalid", "Invalid" }, /* 0x17 */ |
{ "Invalid", "Invalid" }, /* 0x18 */ |
{ "Invalid", "Invalid" }, /* 0x19 */ |
{ "Invalid", "Invalid" }, /* 0x1a */ |
{ "Invalid", "Invalid" }, /* 0x1b */ |
{ "Invalid", "Invalid" }, /* 0x1c */ |
{ "Invalid", "Invalid" }, /* 0x1d */ |
{ "Invalid", "Invalid" }, /* 0x1e */ |
{ "Invalid", "Invalid" }, /* 0x1f */ |
{ "QED", "R4600" }, /* 0x20 */ |
{ "Sony", "R3000" }, /* 0x21 */ |
{ "Toshiba", "R3000" }, /* 0x22 */ |
{ "NKK", "R3000" } /* 0x23 */ |
}; |
void cpu_arch_init(void) |
{ |
} |
void cpu_identify(void) |
{ |
CPU->arch.rev_num = cp0_prid_read() & 0xff; |
CPU->arch.imp_num = (cp0_prid_read() >> 8) & 0xff; |
} |
void cpu_print_report(cpu_t *m) |
{ |
printf("cpu%d: %s %s (rev=%d.%d, imp=%d)\n", |
m->id, imp_data[m->arch.imp_num].vendor, imp_data[m->arch.imp_num].model, m->arch.rev_num >> 4, m->arch.rev_num & 0xf, m->arch.imp_num); |
} |
/SPARTAN/trunk/arch/mips/src/dummy.s |
---|
0,0 → 1,45 |
# |
# Copyright (C) 2001-2004 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. |
# |
.text |
.set noat |
.global calibrate_delay_loop |
.global asm_delay_loop |
.global userspace |
.global before_thread_runs_arch |
.global dummy |
before_thread_runs_arch: |
userspace: |
calibrate_delay_loop: |
asm_delay_loop: |
dummy: |
j $31 |
nop |
/SPARTAN/trunk/arch/mips/src/mips.c |
---|
0,0 → 1,59 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
#include <arch.h> |
#include <arch/cp0.h> |
#include <arch/exception.h> |
void arch_pre_mm_init(void) |
{ |
/* |
* Switch to BEV normal level so that exception vectors point to the kernel. |
* Clear the error level. |
*/ |
cp0_status_write(cp0_status_read() & ~(cp0_status_bev_bootstrap_bit|cp0_status_erl_error_bit)); |
/* |
* Unmask hardware clock interrupt. |
*/ |
cp0_status_write(cp0_status_read() | (1<<cp0_status_im7_shift)); |
/* |
* Start hardware clock. |
*/ |
cp0_compare_write(cp0_compare_value); |
cp0_count_write(0); |
} |
void arch_post_mm_init(void) |
{ |
} |
void arch_late_init(void) |
{ |
} |
/SPARTAN/trunk/arch/mips/src/interrupt.c |
---|
0,0 → 1,95 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
#include <arch/interrupt.h> |
#include <arch/types.h> |
#include <arch.h> |
#include <arch/cp0.h> |
#include <time/clock.h> |
#include <panic.h> |
pri_t cpu_priority_high(void) |
{ |
pri_t pri = (pri_t) cp0_status_read(); |
cp0_status_write(pri & ~cp0_status_ie_enabled_bit); |
return pri; |
} |
pri_t cpu_priority_low(void) |
{ |
pri_t pri = (pri_t) cp0_status_read(); |
cp0_status_write(pri | cp0_status_ie_enabled_bit); |
return pri; |
} |
void cpu_priority_restore(pri_t pri) |
{ |
cp0_status_write(cp0_status_read() | (pri & cp0_status_ie_enabled_bit)); |
} |
pri_t cpu_priority_read(void) |
{ |
return cp0_status_read(); |
} |
void interrupt(void) |
{ |
__u32 cause; |
int i; |
/* decode interrupt number and process the interrupt */ |
cause = (cp0_cause_read() >> 8) &0xff; |
for (i = 0; i < 8; i++) { |
if (cause & (1 << i)) { |
switch (i) { |
case 0: /* SW0 - Software interrupt 0 */ |
cp0_cause_write(cause & ~(1 << 8)); /* clear SW0 interrupt */ |
break; |
case 1: /* SW1 - Software interrupt 1 */ |
cp0_cause_write(cause & ~(1 << 9)); /* clear SW1 interrupt */ |
break; |
case 2: /* IRQ0 */ |
case 3: /* IRQ1 */ |
case 4: /* IRQ2 */ |
case 5: /* IRQ3 */ |
case 6: /* IRQ4 */ |
panic("unhandled interrupt %d\n", i); |
break; |
case 7: /* Timer Interrupt */ |
cp0_compare_write(cp0_compare_value); /* clear timer interrupt */ |
/* start counting over again */ |
cp0_count_write(0); |
clock(); |
break; |
} |
} |
} |
} |
/SPARTAN/trunk/arch/mips/src/start.S |
---|
0,0 → 1,91 |
# |
# Copyright (C) 2001-2004 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. |
# |
#include <arch/asm/macro.h> |
#define STACK_SPACE 128 |
.text |
.set noat |
.set noreorder |
.set nomacro |
.global kernel_image_start |
.global tlb_refill_entry |
.global cache_error_entry |
.global exception_entry |
.org 0x0 |
kernel_image_start: |
tlb_refill_entry: |
j tlb_refill_handler |
nop |
.org 0x100 |
cache_error_entry: |
j cache_error_handler |
nop |
.org 0x180 |
exception_entry: |
exception_handler: |
sub $29, STACK_SPACE |
REGISTERS_STORE $29 |
jal exception |
nop |
REGISTERS_LOAD $29 |
add $29, STACK_SPACE |
eret |
tlb_refill_handler: |
sub $29, STACK_SPACE |
REGISTERS_STORE $29 |
jal tlb_refill |
nop |
REGISTERS_LOAD $29 |
add $29, STACK_SPACE |
eret |
cache_error_handler: |
sub $29, STACK_SPACE |
REGISTERS_STORE $29 |
jal cache_error |
nop |
REGISTERS_LOAD $29 |
add $29, STACK_SPACE |
eret |
/SPARTAN/trunk/arch/mips/src/fpu_context.c |
---|
0,0 → 1,48 |
/* |
* Copyright (C) 2005 Jakub Vana |
* 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. |
* |
*/ |
#include <fpu_context.h> |
void fpu_context_save(fpu_context_t *fctx) |
{ |
} |
void fpu_context_restore(fpu_context_t *fctx) |
{ |
} |
void fpu_lazy_context_save(fpu_context_t *fctx) |
{ |
} |
void fpu_lazy_context_restore(fpu_context_t *fctx) |
{ |
} |
/SPARTAN/trunk/arch/mips/src/cache.c |
---|
0,0 → 1,35 |
/* |
* Copyright (C) 2001-2004 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. |
*/ |
#include <arch/cache.h> |
#include <panic.h> |
void cache_error(void) |
{ |
panic("cache_error exception\n"); |
} |
/SPARTAN/trunk/arch/mips/src/panic.s |
---|
0,0 → 1,42 |
# |
# Copyright (C) 2001-2004 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. |
# |
.text |
.set noat |
.set noreorder |
.set nomacro |
.global panic_printf |
panic_printf: |
jal printf |
nop |
j cpu_halt |
nop |
/SPARTAN/trunk/arch/mips/src/context.S |
---|
0,0 → 1,52 |
# |
# Copyright (C) 2001-2004 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. |
# |
#include <arch/asm/macro.h> |
.text |
.set noat |
.set noreorder |
.set nomacro |
.global context_save |
.global context_restore |
context_save: |
REGISTERS_STORE $4 |
# context_save returns 1 |
j $31 |
li $2, 1 |
context_restore: |
REGISTERS_LOAD $4 |
# context_restore returns 0 |
j $31 |
xor $2, $2 |