1 |
/* |
/* |
2 |
* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
* Copyright (C) 2003-2006 Anders Gavare. All rights reserved. |
3 |
* |
* |
4 |
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
5 |
* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
25 |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
26 |
* |
* |
27 |
* |
* |
28 |
* $Id: cpu_mips_coproc.c,v 1.2 2005/09/11 10:37:37 debug Exp $ |
* $Id: cpu_mips_coproc.c,v 1.37 2006/06/25 02:46:07 debug Exp $ |
29 |
* |
* |
30 |
* Emulation of MIPS coprocessors. |
* Emulation of MIPS coprocessors. |
31 |
*/ |
*/ |
35 |
#include <string.h> |
#include <string.h> |
36 |
#include <math.h> |
#include <math.h> |
37 |
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#include "bintrans.h" |
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38 |
#include "cop0.h" |
#include "cop0.h" |
39 |
#include "cpu.h" |
#include "cpu.h" |
40 |
#include "cpu_mips.h" |
#include "cpu_mips.h" |
41 |
#include "emul.h" |
#include "emul.h" |
42 |
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#include "float_emul.h" |
43 |
#include "machine.h" |
#include "machine.h" |
44 |
#include "memory.h" |
#include "memory.h" |
45 |
#include "mips_cpu_types.h" |
#include "mips_cpu_types.h" |
68 |
static char *regnames[] = MIPS_REGISTER_NAMES; |
static char *regnames[] = MIPS_REGISTER_NAMES; |
69 |
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70 |
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/* FPU control registers: */ |
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#define FPU_FCIR 0 |
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#define FPU_FCCR 25 |
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#define FPU_FCSR 31 |
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#define FCSR_FCC0_SHIFT 23 |
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#define FCSR_FCC1_SHIFT 25 |
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71 |
/* |
/* |
72 |
* initialize_cop0_config(): |
* initialize_cop0_config(): |
73 |
* |
* |
75 |
*/ |
*/ |
76 |
static void initialize_cop0_config(struct cpu *cpu, struct mips_coproc *c) |
static void initialize_cop0_config(struct cpu *cpu, struct mips_coproc *c) |
77 |
{ |
{ |
78 |
#ifdef ENABLE_MIPS16 |
const int m16 = 0; /* TODO: MIPS16 support */ |
79 |
const int m16 = 1; |
int IB, DB, SB, IC, DC, SC, IA, DA; |
80 |
#else |
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81 |
const int m16 = 0; |
/* Generic case for MIPS32/64: */ |
82 |
#endif |
if (cpu->cd.mips.cpu_type.isa_level == 32 || |
83 |
int cpu_type, IB, DB, SB, IC, DC, SC, IA, DA; |
cpu->cd.mips.cpu_type.isa_level == 64) { |
84 |
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/* According to the MIPS64 (5K) User's Manual: */ |
85 |
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c->reg[COP0_CONFIG] = |
86 |
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( (uint32_t)1 << 31)/* Config 1 present bit */ |
87 |
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| ( 0 << 20) /* ISD: instruction scheduling |
88 |
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disable (=1) */ |
89 |
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| ( 0 << 17) /* DID: dual issue disable */ |
90 |
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| ( 0 << 16) /* BM: burst mode */ |
91 |
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| ((cpu->byte_order == EMUL_BIG_ENDIAN? 1 : 0) << 15) |
92 |
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/* endian mode */ |
93 |
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| ((cpu->cd.mips.cpu_type.isa_level == 64? 2 : 0) << 13) |
94 |
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/* 0=MIPS32, 1=64S, 2=64 */ |
95 |
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| ( 0 << 10) /* Architecture revision */ |
96 |
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| ( 1 << 7) /* MMU type: 1=TLB, 3=FMT */ |
97 |
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| ( 2 << 0) /* kseg0 cache coherency algorithm */ |
98 |
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; |
99 |
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/* Config select 1: caches etc. TODO: Don't use |
100 |
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cpu->machine for this stuff! */ |
101 |
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IB = cpu->machine->cache_picache_linesize - 1; |
102 |
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IB = IB < 0? 0 : (IB > 7? 7 : IB); |
103 |
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DB = cpu->machine->cache_pdcache_linesize - 1; |
104 |
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DB = DB < 0? 0 : (DB > 7? 7 : DB); |
105 |
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IC = cpu->machine->cache_picache - |
106 |
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cpu->machine->cache_picache_linesize - 7; |
107 |
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DC = cpu->machine->cache_pdcache - |
108 |
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cpu->machine->cache_pdcache_linesize - 7; |
109 |
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IA = cpu->cd.mips.cpu_type.piways - 1; |
110 |
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DA = cpu->cd.mips.cpu_type.pdways - 1; |
111 |
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cpu->cd.mips.cop0_config_select1 = |
112 |
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((cpu->cd.mips.cpu_type.nr_of_tlb_entries - 1) << 25) |
113 |
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| (IC << 22) /* IS: I-cache sets per way */ |
114 |
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| (IB << 19) /* IL: I-cache line-size */ |
115 |
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| (IA << 16) /* IA: I-cache assoc. (ways-1) */ |
116 |
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| (DC << 13) /* DS: D-cache sets per way */ |
117 |
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| (DB << 10) /* DL: D-cache line-size */ |
118 |
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| (DA << 7) /* DA: D-cache assoc. (ways-1) */ |
119 |
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| (16 * 0) /* Existance of PerformanceCounters */ |
120 |
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| ( 8 * 0) /* Existance of Watch Registers */ |
121 |
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| ( 4 * m16) /* Existance of MIPS16 */ |
122 |
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| ( 2 * 0) /* Existance of EJTAG */ |
123 |
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| ( 1 * 1) /* Existance of FPU */ |
124 |
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; |
125 |
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126 |
/* Default values: */ |
return; |
127 |
c->reg[COP0_CONFIG] = |
} |
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( 0 << 31) /* config1 present */ |
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| (0x00 << 16) /* implementation dependant */ |
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| ((cpu->byte_order==EMUL_BIG_ENDIAN? 1 : 0) << 15) |
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/* endian mode */ |
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| ( 2 << 13) /* 0 = MIPS32, |
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1 = MIPS64 with 32-bit segments, |
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2 = MIPS64 with all segments, |
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3 = reserved */ |
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| ( 0 << 10) /* architecture revision level, |
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0 = "Revision 1", other |
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values are reserved */ |
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| ( 1 << 7) /* MMU type: 0 = none, |
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1 = Standard TLB, |
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2 = Standard BAT, |
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3 = fixed mapping, 4-7=reserved */ |
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| ( 0 << 0) /* kseg0 coherency algorithm |
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(TODO) */ |
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; |
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cpu_type = cpu->cd.mips.cpu_type.rev & 0xff; |
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/* AU1x00 are treated as 4Kc (MIPS32 cores): */ |
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if ((cpu->cd.mips.cpu_type.rev & 0xffff) == 0x0301) |
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cpu_type = MIPS_4Kc; |
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128 |
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129 |
switch (cpu_type) { |
switch (cpu->cd.mips.cpu_type.rev) { |
130 |
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case MIPS_R2000: |
131 |
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case MIPS_R3000: |
132 |
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/* No config register. */ |
133 |
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break; |
134 |
case MIPS_R4000: /* according to the R4000 manual */ |
case MIPS_R4000: /* according to the R4000 manual */ |
135 |
case MIPS_R4600: |
case MIPS_R4600: |
136 |
IB = cpu->machine->cache_picache_linesize - 4; |
IB = cpu->machine->cache_picache_linesize - 4; |
315 |
(TODO) */ |
(TODO) */ |
316 |
; |
; |
317 |
break; |
break; |
318 |
case MIPS_4Kc: |
default:fatal("Internal error: No initialization code for" |
319 |
case MIPS_5Kc: |
" config0? cpu rev = 0x%x", cpu->cd.mips.cpu_type.rev); |
320 |
/* According to the MIPS64 (5K) User's Manual: */ |
exit(1); |
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c->reg[COP0_CONFIG] = |
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( (uint32_t)1 << 31)/* Config 1 present bit */ |
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| ( 0 << 20) /* ISD: instruction scheduling |
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disable (=1) */ |
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| ( 0 << 17) /* DID: dual issue disable */ |
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| ( 0 << 16) /* BM: burst mode */ |
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| ((cpu->byte_order == EMUL_BIG_ENDIAN? 1 : 0) << 15) |
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/* endian mode */ |
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| ((cpu_type == MIPS_5Kc? 2 : 0) << 13) |
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/* 0=MIPS32, 1=64S, 2=64 */ |
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| ( 0 << 10) /* Architecture revision */ |
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| ( 1 << 7) /* MMU type: 1=TLB, 3=FMT */ |
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| ( 2 << 0) /* kseg0 cache coherency algorithm */ |
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; |
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/* Config select 1: caches etc. TODO: Don't use |
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cpu->machine for this stuff! */ |
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IB = cpu->machine->cache_picache_linesize - 1; |
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IB = IB < 0? 0 : (IB > 7? 7 : IB); |
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DB = cpu->machine->cache_pdcache_linesize - 1; |
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DB = DB < 0? 0 : (DB > 7? 7 : DB); |
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IC = cpu->machine->cache_picache - |
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cpu->machine->cache_picache_linesize - 7; |
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DC = cpu->machine->cache_pdcache - |
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cpu->machine->cache_pdcache_linesize - 7; |
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IA = cpu->cd.mips.cpu_type.piways - 1; |
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DA = cpu->cd.mips.cpu_type.pdways - 1; |
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cpu->cd.mips.cop0_config_select1 = |
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((cpu->cd.mips.cpu_type.nr_of_tlb_entries - 1) << 25) |
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| (IC << 22) /* IS: I-cache sets per way */ |
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| (IB << 19) /* IL: I-cache line-size */ |
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| (IA << 16) /* IA: I-cache assoc. (ways-1) */ |
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| (DC << 13) /* DS: D-cache sets per way */ |
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| (DB << 10) /* DL: D-cache line-size */ |
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| (DA << 7) /* DA: D-cache assoc. (ways-1) */ |
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| (16 * 0) /* Existance of PerformanceCounters */ |
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| ( 8 * 0) /* Existance of Watch Registers */ |
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| ( 4 * m16) /* Existance of MIPS16 */ |
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| ( 2 * 0) /* Existance of EJTAG */ |
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| ( 1 * 1) /* Existance of FPU */ |
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; |
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break; |
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default: |
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; |
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321 |
} |
} |
322 |
} |
} |
323 |
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384 |
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385 |
if (coproc_nr == 0) { |
if (coproc_nr == 0) { |
386 |
c->nr_of_tlbs = cpu->cd.mips.cpu_type.nr_of_tlb_entries; |
c->nr_of_tlbs = cpu->cd.mips.cpu_type.nr_of_tlb_entries; |
387 |
c->tlbs = malloc(c->nr_of_tlbs * sizeof(struct mips_tlb)); |
c->tlbs = zeroed_alloc(c->nr_of_tlbs * sizeof(struct mips_tlb)); |
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if (c->tlbs == NULL) { |
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fprintf(stderr, "mips_coproc_new(): out of memory\n"); |
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exit(1); |
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} |
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388 |
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389 |
/* |
/* |
390 |
* Start with nothing in the status register. This makes sure |
* Start with nothing in the status register. This makes sure |
407 |
if (!cpu->machine->prom_emulation) |
if (!cpu->machine->prom_emulation) |
408 |
c->reg[COP0_STATUS] |= STATUS_BEV; |
c->reg[COP0_STATUS] |= STATUS_BEV; |
409 |
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410 |
/* Default pagesize = 4 KB. */ |
/* Ugly hack for R5900/TX79/C790: */ |
411 |
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if (cpu->cd.mips.cpu_type.rev == MIPS_R5900) |
412 |
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c->reg[COP0_STATUS] |= R5900_STATUS_EIE; |
413 |
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414 |
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/* Default pagesize = 4 KB (i.e. dualpage = 8KB) */ |
415 |
c->reg[COP0_PAGEMASK] = 0x1fff; |
c->reg[COP0_PAGEMASK] = 0x1fff; |
416 |
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417 |
/* Note: .rev may contain the company ID as well! */ |
/* Note: .rev may contain the company ID as well! */ |
418 |
c->reg[COP0_PRID] = |
c->reg[COP0_PRID] = |
419 |
(0x00 << 24) /* Company Options */ |
(0x00 << 24) /* Company Options */ |
420 |
| (0x00 << 16) /* Company ID */ |
| (0x00 << 16) /* Company ID */ |
421 |
| (cpu->cd.mips.cpu_type.rev << 8) /* Processor ID */ |
| (cpu->cd.mips.cpu_type.rev << 8) /* Processor ID */ |
422 |
| (cpu->cd.mips.cpu_type.sub) /* Revision */ |
| (cpu->cd.mips.cpu_type.sub) /* Revision */ |
423 |
; |
; |
427 |
initialize_cop0_config(cpu, c); |
initialize_cop0_config(cpu, c); |
428 |
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429 |
/* Make sure the status register is sign-extended nicely: */ |
/* Make sure the status register is sign-extended nicely: */ |
430 |
c->reg[COP0_STATUS] = (int64_t)(int32_t)c->reg[COP0_STATUS]; |
c->reg[COP0_STATUS] = (int32_t)c->reg[COP0_STATUS]; |
431 |
} |
} |
432 |
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433 |
if (coproc_nr == 1) |
if (coproc_nr == 1) |
509 |
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510 |
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511 |
/* |
/* |
512 |
* old_update_translation_table(): |
* invalidate_asid(): |
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*/ |
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static void old_update_translation_table(struct cpu *cpu, uint64_t vaddr_page, |
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unsigned char *host_page, int writeflag, uint64_t paddr_page) |
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{ |
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int a, b, index; |
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struct vth32_table *tbl1; |
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void *p_r, *p_w; |
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uint32_t p_paddr; |
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/* This table stuff only works for 32-bit mode: */ |
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if (vaddr_page & 0x80000000ULL) { |
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if ((vaddr_page >> 32) != 0xffffffffULL) |
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return; |
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} else { |
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if ((vaddr_page >> 32) != 0) |
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return; |
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} |
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a = (vaddr_page >> 22) & 0x3ff; |
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b = (vaddr_page >> 12) & 0x3ff; |
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index = (vaddr_page >> 12) & 0xfffff; |
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/* printf("vaddr = %08x, a = %03x, b = %03x\n", |
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(int)vaddr_page,a, b); */ |
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tbl1 = cpu->cd.mips.vaddr_to_hostaddr_table0_kernel[a]; |
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/* printf("tbl1 = %p\n", tbl1); */ |
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if (tbl1 == cpu->cd.mips.vaddr_to_hostaddr_nulltable) { |
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/* Allocate a new table1: */ |
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/* printf("ALLOCATING a new table1, 0x%08x - " |
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"0x%08x\n", a << 22, (a << 22) + 0x3fffff); */ |
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if (cpu->cd.mips.next_free_vth_table == NULL) { |
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tbl1 = malloc(sizeof(struct vth32_table)); |
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if (tbl1 == NULL) { |
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fprintf(stderr, "out of mem\n"); |
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exit(1); |
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} |
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memset(tbl1, 0, sizeof(struct vth32_table)); |
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} else { |
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tbl1 = cpu->cd.mips.next_free_vth_table; |
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cpu->cd.mips.next_free_vth_table = tbl1->next_free; |
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tbl1->next_free = NULL; |
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} |
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cpu->cd.mips.vaddr_to_hostaddr_table0_kernel[a] = tbl1; |
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if (tbl1->refcount != 0) { |
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printf("INTERNAL ERROR in coproc.c\n"); |
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exit(1); |
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} |
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} |
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p_r = tbl1->haddr_entry[b*2]; |
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p_w = tbl1->haddr_entry[b*2+1]; |
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p_paddr = tbl1->paddr_entry[b]; |
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/* printf(" p_r=%p p_w=%p\n", p_r, p_w); */ |
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if (p_r == NULL && p_paddr == 0 && |
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(host_page != NULL || paddr_page != 0)) { |
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tbl1->refcount ++; |
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/* printf("ADDING %08x -> %p wf=%i (refcount is " |
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"now %i)\n", (int)vaddr_page, host_page, |
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writeflag, tbl1->refcount); */ |
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} |
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if (writeflag == -1) { |
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/* Forced downgrade to read-only: */ |
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tbl1->haddr_entry[b*2 + 1] = NULL; |
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if (cpu->cd.mips.host_store == |
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cpu->cd.mips.host_store_orig) |
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cpu->cd.mips.host_store[index] = NULL; |
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} else if (writeflag==0 && p_w != NULL && host_page != NULL) { |
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/* Don't degrade a page from writable to readonly. */ |
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} else { |
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if (host_page != NULL) { |
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tbl1->haddr_entry[b*2] = host_page; |
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if (cpu->cd.mips.host_load == |
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cpu->cd.mips.host_load_orig) |
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cpu->cd.mips.host_load[index] = host_page; |
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if (writeflag) { |
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tbl1->haddr_entry[b*2+1] = host_page; |
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if (cpu->cd.mips.host_store == |
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cpu->cd.mips.host_store_orig) |
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cpu->cd.mips.host_store[index] = |
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host_page; |
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} else { |
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tbl1->haddr_entry[b*2+1] = NULL; |
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if (cpu->cd.mips.host_store == |
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cpu->cd.mips.host_store_orig) |
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cpu->cd.mips.host_store[index] = NULL; |
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} |
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} else { |
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tbl1->haddr_entry[b*2] = NULL; |
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tbl1->haddr_entry[b*2+1] = NULL; |
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if (cpu->cd.mips.host_store == |
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cpu->cd.mips.host_store_orig) { |
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cpu->cd.mips.host_load[index] = NULL; |
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cpu->cd.mips.host_store[index] = NULL; |
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} |
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} |
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tbl1->paddr_entry[b] = paddr_page; |
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} |
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tbl1->bintrans_chunks[b] = NULL; |
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} |
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/* |
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* mips_update_translation_table(): |
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*/ |
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void mips_update_translation_table(struct cpu *cpu, uint64_t vaddr_page, |
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unsigned char *host_page, int writeflag, uint64_t paddr_page) |
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{ |
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if (!cpu->machine->bintrans_enable) |
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return; |
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if (writeflag > 0) |
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bintrans_invalidate(cpu, paddr_page); |
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if (cpu->machine->old_bintrans_enable) { |
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old_update_translation_table(cpu, vaddr_page, host_page, |
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writeflag, paddr_page); |
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return; |
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} |
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/* TODO */ |
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/* printf("update_translation_table(): TODO\n"); */ |
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} |
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/* |
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* invalidate_table_entry(): |
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*/ |
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static void invalidate_table_entry(struct cpu *cpu, uint64_t vaddr) |
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{ |
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int a, b, index; |
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struct vth32_table *tbl1; |
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void *p_r, *p_w; |
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uint32_t p_paddr; |
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if (!cpu->machine->old_bintrans_enable) { |
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/* printf("invalidate_table_entry(): New: TODO\n"); */ |
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return; |
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} |
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/* This table stuff only works for 32-bit mode: */ |
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if (vaddr & 0x80000000ULL) { |
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if ((vaddr >> 32) != 0xffffffffULL) { |
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fatal("invalidate_table_entry(): vaddr = 0x%016llx\n", |
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(long long)vaddr); |
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return; |
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} |
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} else { |
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if ((vaddr >> 32) != 0) { |
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fatal("invalidate_table_entry(): vaddr = 0x%016llx\n", |
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(long long)vaddr); |
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return; |
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} |
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} |
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a = (vaddr >> 22) & 0x3ff; |
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b = (vaddr >> 12) & 0x3ff; |
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index = (vaddr >> 12) & 0xfffff; |
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/* printf("vaddr = %08x, a = %03x, b = %03x\n", (int)vaddr,a, b); */ |
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tbl1 = cpu->cd.mips.vaddr_to_hostaddr_table0_kernel[a]; |
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/* printf("tbl1 = %p\n", tbl1); */ |
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p_r = tbl1->haddr_entry[b*2]; |
|
|
p_w = tbl1->haddr_entry[b*2+1]; |
|
|
p_paddr = tbl1->paddr_entry[b]; |
|
|
tbl1->bintrans_chunks[b] = NULL; |
|
|
/* printf("B: p_r=%p p_w=%p\n", p_r,p_w); */ |
|
|
cpu->cd.mips.host_load_orig[index] = NULL; |
|
|
cpu->cd.mips.host_store_orig[index] = NULL; |
|
|
if (p_r != NULL || p_paddr != 0) { |
|
|
/* printf("Found a mapping, " |
|
|
"vaddr = %08x, a = %03x, b = %03x\n", (int)vaddr,a, b); */ |
|
|
tbl1->haddr_entry[b*2] = NULL; |
|
|
tbl1->haddr_entry[b*2+1] = NULL; |
|
|
tbl1->paddr_entry[b] = 0; |
|
|
tbl1->refcount --; |
|
|
if (tbl1->refcount == 0) { |
|
|
cpu->cd.mips.vaddr_to_hostaddr_table0_kernel[a] = |
|
|
cpu->cd.mips.vaddr_to_hostaddr_nulltable; |
|
|
/* "free" tbl1: */ |
|
|
tbl1->next_free = cpu->cd.mips.next_free_vth_table; |
|
|
cpu->cd.mips.next_free_vth_table = tbl1; |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
/* |
|
|
* clear_all_chunks_from_all_tables(): |
|
|
*/ |
|
|
void clear_all_chunks_from_all_tables(struct cpu *cpu) |
|
|
{ |
|
|
int a, b; |
|
|
struct vth32_table *tbl1; |
|
|
|
|
|
if (!cpu->machine->old_bintrans_enable) { |
|
|
printf("clear_all_chunks_from_all_tables(): New: TODO\n"); |
|
|
return; |
|
|
} |
|
|
|
|
|
for (a=0; a<0x400; a++) { |
|
|
tbl1 = cpu->cd.mips.vaddr_to_hostaddr_table0_kernel[a]; |
|
|
if (tbl1 != cpu->cd.mips.vaddr_to_hostaddr_nulltable) { |
|
|
for (b=0; b<0x400; b++) { |
|
|
int index; |
|
|
|
|
|
tbl1->haddr_entry[b*2] = NULL; |
|
|
tbl1->haddr_entry[b*2+1] = NULL; |
|
|
tbl1->paddr_entry[b] = 0; |
|
|
tbl1->bintrans_chunks[b] = NULL; |
|
|
|
|
|
if (cpu->cd.mips.host_store == |
|
|
cpu->cd.mips.host_store_orig) { |
|
|
index = (a << 10) + b; |
|
|
cpu->cd.mips.host_load[index] = NULL; |
|
|
cpu->cd.mips.host_store[index] = NULL; |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
|
|
|
/* |
|
|
* mips_invalidate_translation_caches_paddr(): |
|
513 |
* |
* |
514 |
* Invalidate based on physical address. |
* Go through all entries in the TLB. If an entry has a matching asid, is |
515 |
*/ |
* valid, and is not global (i.e. the ASID matters), then its virtual address |
516 |
void mips_invalidate_translation_caches_paddr(struct cpu *cpu, |
* translation is invalidated. |
|
uint64_t paddr, int flags) |
|
|
{ |
|
|
paddr &= ~0xfff; |
|
|
|
|
|
if (cpu->machine->bintrans_enable) { |
|
|
#if 1 |
|
|
int i; |
|
|
uint64_t tlb_paddr0, tlb_paddr1; |
|
|
uint64_t tlb_vaddr; |
|
|
uint64_t p, p2; |
|
|
|
|
|
switch (cpu->cd.mips.cpu_type.mmu_model) { |
|
|
case MMU3K: |
|
|
for (i=0; i<64; i++) { |
|
|
tlb_paddr0 = cpu->cd.mips.coproc[0]-> |
|
|
tlbs[i].lo0 & R2K3K_ENTRYLO_PFN_MASK; |
|
|
tlb_vaddr = cpu->cd.mips.coproc[0]-> |
|
|
tlbs[i].hi & R2K3K_ENTRYHI_VPN_MASK; |
|
|
tlb_vaddr = (int64_t)(int32_t)tlb_vaddr; |
|
|
if ((cpu->cd.mips.coproc[0]->tlbs[i].lo0 & |
|
|
R2K3K_ENTRYLO_V) && tlb_paddr0 == paddr) |
|
|
invalidate_table_entry(cpu, tlb_vaddr); |
|
|
} |
|
|
break; |
|
|
default: |
|
|
for (i=0; i<cpu->cd.mips.coproc[0]->nr_of_tlbs; i++) { |
|
|
int psize = 12; |
|
|
int or_pmask = 0x1fff; |
|
|
int phys_shift = 12; |
|
|
|
|
|
if (cpu->cd.mips.cpu_type.rev == MIPS_R4100) { |
|
|
or_pmask = 0x7ff; |
|
|
phys_shift = 10; |
|
|
} |
|
|
switch (cpu->cd.mips.coproc[0]-> |
|
|
tlbs[i].mask | or_pmask) { |
|
|
case 0x000007ff: psize = 10; break; |
|
|
case 0x00001fff: psize = 12; break; |
|
|
case 0x00007fff: psize = 14; break; |
|
|
case 0x0001ffff: psize = 16; break; |
|
|
case 0x0007ffff: psize = 18; break; |
|
|
case 0x001fffff: psize = 20; break; |
|
|
case 0x007fffff: psize = 22; break; |
|
|
case 0x01ffffff: psize = 24; break; |
|
|
case 0x07ffffff: psize = 26; break; |
|
|
default: |
|
|
printf("invalidate_translation_caches" |
|
|
"_paddr(): bad pagemask?\n"); |
|
|
} |
|
|
tlb_paddr0 = (cpu->cd.mips.coproc[0]->tlbs[i]. |
|
|
lo0 & ENTRYLO_PFN_MASK)>>ENTRYLO_PFN_SHIFT; |
|
|
tlb_paddr1 = (cpu->cd.mips.coproc[0]->tlbs[i]. |
|
|
lo1 & ENTRYLO_PFN_MASK)>>ENTRYLO_PFN_SHIFT; |
|
|
tlb_paddr0 <<= phys_shift; |
|
|
tlb_paddr1 <<= phys_shift; |
|
|
if (cpu->cd.mips.cpu_type.mmu_model == MMU10K) { |
|
|
tlb_vaddr = cpu->cd.mips.coproc[0]-> |
|
|
tlbs[i].hi & ENTRYHI_VPN2_MASK_R10K; |
|
|
if (tlb_vaddr & ((int64_t)1 << 43)) |
|
|
tlb_vaddr |= |
|
|
0xfffff00000000000ULL; |
|
|
} else { |
|
|
tlb_vaddr = cpu->cd.mips.coproc[0]-> |
|
|
tlbs[i].hi & ENTRYHI_VPN2_MASK; |
|
|
if (tlb_vaddr & ((int64_t)1 << 39)) |
|
|
tlb_vaddr |= |
|
|
0xffffff0000000000ULL; |
|
|
} |
|
|
if ((cpu->cd.mips.coproc[0]->tlbs[i].lo0 & |
|
|
ENTRYLO_V) && paddr >= tlb_paddr0 && |
|
|
paddr < tlb_paddr0 + (1<<psize)) { |
|
|
p2 = 1 << psize; |
|
|
for (p=0; p<p2; p+=4096) |
|
|
invalidate_table_entry(cpu, |
|
|
tlb_vaddr + p); |
|
|
} |
|
|
if ((cpu->cd.mips.coproc[0]->tlbs[i].lo1 & |
|
|
ENTRYLO_V) && paddr >= tlb_paddr1 && |
|
|
paddr < tlb_paddr1 + (1<<psize)) { |
|
|
p2 = 1 << psize; |
|
|
for (p=0; p<p2; p+=4096) |
|
|
invalidate_table_entry(cpu, |
|
|
tlb_vaddr + p + |
|
|
(1 << psize)); |
|
|
} |
|
|
} |
|
|
} |
|
|
#endif |
|
|
|
|
|
if (paddr < 0x20000000) { |
|
|
invalidate_table_entry(cpu, 0xffffffff80000000ULL |
|
|
+ paddr); |
|
|
invalidate_table_entry(cpu, 0xffffffffa0000000ULL |
|
|
+ paddr); |
|
|
} |
|
|
} |
|
|
|
|
|
#if 0 |
|
|
{ |
|
|
int i; |
|
|
|
|
|
/* TODO: Don't invalidate everything. */ |
|
|
for (i=0; i<N_BINTRANS_VADDR_TO_HOST; i++) |
|
|
cpu->bintrans_data_hostpage[i] = NULL; |
|
|
} |
|
|
#endif |
|
|
} |
|
|
|
|
|
|
|
|
/* |
|
|
* invalidate_translation_caches(): |
|
517 |
* |
* |
518 |
* This is necessary for every change to the TLB, and when the ASID is changed, |
* Note: In the R3000 case, the asid argument is shifted 6 bits. |
|
* so that for example user-space addresses are not cached when they should |
|
|
* not be. |
|
519 |
*/ |
*/ |
520 |
static void invalidate_translation_caches(struct cpu *cpu, |
static void invalidate_asid(struct cpu *cpu, int asid) |
|
int all, uint64_t vaddr, int kernelspace, int old_asid_to_invalidate) |
|
521 |
{ |
{ |
522 |
int i; |
struct mips_coproc *cp = cpu->cd.mips.coproc[0]; |
523 |
|
int i, ntlbs = cp->nr_of_tlbs; |
524 |
/* printf("inval(all=%i, kernel=%i, addr=%016llx)\n", |
struct mips_tlb *tlb = cp->tlbs; |
|
all, kernelspace, (long long)vaddr); */ |
|
|
|
|
|
if (!cpu->machine->bintrans_enable) |
|
|
goto nobintrans; |
|
|
|
|
|
if (all) { |
|
|
int i; |
|
|
uint64_t tlb_vaddr; |
|
|
switch (cpu->cd.mips.cpu_type.mmu_model) { |
|
|
case MMU3K: |
|
|
for (i=0; i<64; i++) { |
|
|
tlb_vaddr = cpu->cd.mips.coproc[0]->tlbs[i].hi |
|
|
& R2K3K_ENTRYHI_VPN_MASK; |
|
|
tlb_vaddr = (int64_t)(int32_t)tlb_vaddr; |
|
|
if ((cpu->cd.mips.coproc[0]->tlbs[i].lo0 & |
|
|
R2K3K_ENTRYLO_V) && (tlb_vaddr & |
|
|
0xc0000000ULL) != 0x80000000ULL) { |
|
|
int asid = (cpu->cd.mips.coproc[0]-> |
|
|
tlbs[i].hi & R2K3K_ENTRYHI_ASID_MASK |
|
|
) >> R2K3K_ENTRYHI_ASID_SHIFT; |
|
|
if (old_asid_to_invalidate < 0 || |
|
|
old_asid_to_invalidate == asid) |
|
|
invalidate_table_entry(cpu, |
|
|
tlb_vaddr); |
|
|
} |
|
|
} |
|
|
break; |
|
|
default: |
|
|
for (i=0; i<cpu->cd.mips.coproc[0]->nr_of_tlbs; i++) { |
|
|
int psize = 10, or_pmask = 0x1fff; |
|
|
int phys_shift = 12; |
|
|
|
|
|
if (cpu->cd.mips.cpu_type.rev == MIPS_R4100) { |
|
|
or_pmask = 0x7ff; |
|
|
phys_shift = 10; |
|
|
} |
|
|
|
|
|
switch (cpu->cd.mips.coproc[0]->tlbs[i].mask |
|
|
| or_pmask) { |
|
|
case 0x000007ff: psize = 10; break; |
|
|
case 0x00001fff: psize = 12; break; |
|
|
case 0x00007fff: psize = 14; break; |
|
|
case 0x0001ffff: psize = 16; break; |
|
|
case 0x0007ffff: psize = 18; break; |
|
|
case 0x001fffff: psize = 20; break; |
|
|
case 0x007fffff: psize = 22; break; |
|
|
case 0x01ffffff: psize = 24; break; |
|
|
case 0x07ffffff: psize = 26; break; |
|
|
default: |
|
|
printf("invalidate_translation_caches" |
|
|
"(): bad pagemask?\n"); |
|
|
} |
|
|
|
|
|
if (cpu->cd.mips.cpu_type.mmu_model == MMU10K) { |
|
|
tlb_vaddr = cpu->cd.mips.coproc[0]-> |
|
|
tlbs[i].hi & ENTRYHI_VPN2_MASK_R10K; |
|
|
if (tlb_vaddr & ((int64_t)1 << 43)) |
|
|
tlb_vaddr |= |
|
|
0xfffff00000000000ULL; |
|
|
} else { |
|
|
tlb_vaddr = cpu->cd.mips.coproc[0]-> |
|
|
tlbs[i].hi & ENTRYHI_VPN2_MASK; |
|
|
if (tlb_vaddr & ((int64_t)1 << 39)) |
|
|
tlb_vaddr |= |
|
|
0xffffff0000000000ULL; |
|
|
} |
|
|
|
|
|
/* TODO: Check the ASID etc. */ |
|
525 |
|
|
526 |
invalidate_table_entry(cpu, tlb_vaddr); |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K) { |
527 |
invalidate_table_entry(cpu, tlb_vaddr | |
for (i=0; i<ntlbs; i++) |
528 |
(1 << psize)); |
if ((tlb[i].hi & R2K3K_ENTRYHI_ASID_MASK) == asid |
529 |
|
&& (tlb[i].lo0 & R2K3K_ENTRYLO_V) |
530 |
|
&& !(tlb[i].lo0 & R2K3K_ENTRYLO_G)) { |
531 |
|
cpu->invalidate_translation_caches(cpu, |
532 |
|
tlb[i].hi & R2K3K_ENTRYHI_VPN_MASK, |
533 |
|
INVALIDATE_VADDR); |
534 |
} |
} |
535 |
} |
} else { |
536 |
} else |
/* TODO: Implement support for other. */ |
537 |
invalidate_table_entry(cpu, vaddr); |
cpu->invalidate_translation_caches(cpu, 0, INVALIDATE_ALL); |
538 |
|
} |
|
nobintrans: |
|
|
|
|
|
/* TODO: Don't invalidate everything. */ |
|
|
for (i=0; i<N_BINTRANS_VADDR_TO_HOST; i++) |
|
|
cpu->cd.mips.bintrans_data_hostpage[i] = NULL; |
|
|
|
|
|
if (kernelspace) |
|
|
all = 1; |
|
|
|
|
|
#ifdef USE_TINY_CACHE |
|
|
{ |
|
|
vaddr >>= 12; |
|
|
|
|
|
/* Invalidate the tiny translation cache... */ |
|
|
if (!cpu->machine->bintrans_enable) |
|
|
for (i=0; i<N_TRANSLATION_CACHE_INSTR; i++) |
|
|
if (all || vaddr == (cpu->cd.mips. |
|
|
translation_cache_instr[i].vaddr_pfn)) |
|
|
cpu->cd.mips.translation_cache_instr[i].wf = 0; |
|
|
|
|
|
if (!cpu->machine->bintrans_enable) |
|
|
for (i=0; i<N_TRANSLATION_CACHE_DATA; i++) |
|
|
if (all || vaddr == (cpu->cd.mips. |
|
|
translation_cache_data[i].vaddr_pfn)) |
|
|
cpu->cd.mips.translation_cache_data[i].wf = 0; |
|
|
} |
|
|
#endif |
|
539 |
} |
} |
540 |
|
|
541 |
|
|
557 |
if (cp->coproc_nr==0 && reg_nr==COP0_PAGEMASK) unimpl = 0; |
if (cp->coproc_nr==0 && reg_nr==COP0_PAGEMASK) unimpl = 0; |
558 |
if (cp->coproc_nr==0 && reg_nr==COP0_WIRED) unimpl = 0; |
if (cp->coproc_nr==0 && reg_nr==COP0_WIRED) unimpl = 0; |
559 |
if (cp->coproc_nr==0 && reg_nr==COP0_BADVADDR) unimpl = 0; |
if (cp->coproc_nr==0 && reg_nr==COP0_BADVADDR) unimpl = 0; |
560 |
if (cp->coproc_nr==0 && reg_nr==COP0_COUNT) { |
if (cp->coproc_nr==0 && reg_nr==COP0_COUNT) unimpl = 0; |
|
/* |
|
|
* This speeds up delay-loops that just read the count |
|
|
* register until it has reached a certain value. (Only for |
|
|
* R4000 etc.) |
|
|
* |
|
|
* TODO: Maybe this should be optional? |
|
|
*/ |
|
|
if (cpu->cd.mips.cpu_type.exc_model != EXC3K) { |
|
|
int increase = 500; |
|
|
int32_t x = cp->reg[COP0_COUNT]; |
|
|
int32_t y = cp->reg[COP0_COMPARE]; |
|
|
int32_t diff = x - y; |
|
|
if (diff < 0 && diff + increase >= 0 |
|
|
&& cpu->cd.mips.compare_register_set) { |
|
|
mips_cpu_interrupt(cpu, 7); |
|
|
cpu->cd.mips.compare_register_set = 0; |
|
|
} |
|
|
cp->reg[COP0_COUNT] = (int64_t) |
|
|
(int32_t)(cp->reg[COP0_COUNT] + increase); |
|
|
} |
|
|
|
|
|
unimpl = 0; |
|
|
} |
|
561 |
if (cp->coproc_nr==0 && reg_nr==COP0_ENTRYHI) unimpl = 0; |
if (cp->coproc_nr==0 && reg_nr==COP0_ENTRYHI) unimpl = 0; |
562 |
if (cp->coproc_nr==0 && reg_nr==COP0_COMPARE) unimpl = 0; |
if (cp->coproc_nr==0 && reg_nr==COP0_COMPARE) unimpl = 0; |
563 |
if (cp->coproc_nr==0 && reg_nr==COP0_STATUS) unimpl = 0; |
if (cp->coproc_nr==0 && reg_nr==COP0_STATUS) unimpl = 0; |
639 |
(tmp & 0xff)!=0) { |
(tmp & 0xff)!=0) { |
640 |
/* char *symbol; |
/* char *symbol; |
641 |
uint64_t offset; |
uint64_t offset; |
642 |
symbol = get_symbol_name( |
symbol = get_symbol_name(cpu->pc, &offset); |
|
cpu->cd.mips.pc_last, &offset); |
|
643 |
fatal("YO! pc = 0x%08llx <%s> " |
fatal("YO! pc = 0x%08llx <%s> " |
644 |
"lo=%016llx\n", (long long) |
"lo=%016llx\n", (long long) |
645 |
cpu->cd.mips.pc_last, symbol? symbol : |
cpu->pc, symbol? symbol : |
646 |
"no symbol", (long long)tmp); */ |
"no symbol", (long long)tmp); */ |
647 |
tmp &= (R2K3K_ENTRYLO_PFN_MASK | |
tmp &= (R2K3K_ENTRYLO_PFN_MASK | |
648 |
R2K3K_ENTRYLO_N | R2K3K_ENTRYLO_D | |
R2K3K_ENTRYLO_N | R2K3K_ENTRYLO_D | |
708 |
unimpl = 0; |
unimpl = 0; |
709 |
break; |
break; |
710 |
case COP0_COUNT: |
case COP0_COUNT: |
711 |
if (tmp != (int64_t)(int32_t)tmp) |
if (tmp != (uint64_t)(int64_t)(int32_t)tmp) |
712 |
fatal("WARNING: trying to write a 64-bit value" |
fatal("WARNING: trying to write a 64-bit value" |
713 |
" to the COUNT register!\n"); |
" to the COUNT register!\n"); |
714 |
tmp = (int64_t)(int32_t)tmp; |
tmp = (int64_t)(int32_t)tmp; |
718 |
/* Clear the timer interrupt bit (bit 7): */ |
/* Clear the timer interrupt bit (bit 7): */ |
719 |
cpu->cd.mips.compare_register_set = 1; |
cpu->cd.mips.compare_register_set = 1; |
720 |
mips_cpu_interrupt_ack(cpu, 7); |
mips_cpu_interrupt_ack(cpu, 7); |
721 |
if (tmp != (int64_t)(int32_t)tmp) |
if (tmp != (uint64_t)(int64_t)(int32_t)tmp) |
722 |
fatal("WARNING: trying to write a 64-bit value" |
fatal("WARNING: trying to write a 64-bit value" |
723 |
" to the COMPARE register!\n"); |
" to the COMPARE register!\n"); |
724 |
tmp = (int64_t)(int32_t)tmp; |
tmp = (int64_t)(int32_t)tmp; |
726 |
break; |
break; |
727 |
case COP0_ENTRYHI: |
case COP0_ENTRYHI: |
728 |
/* |
/* |
729 |
* Translation caches must be invalidated, because the |
* Translation caches must be invalidated if the |
730 |
* address space might change (if the ASID changes). |
* ASID changes: |
731 |
*/ |
*/ |
732 |
switch (cpu->cd.mips.cpu_type.mmu_model) { |
switch (cpu->cd.mips.cpu_type.mmu_model) { |
733 |
case MMU3K: |
case MMU3K: |
734 |
old_asid = (cp->reg[COP0_ENTRYHI] & |
old_asid = cp->reg[COP0_ENTRYHI] & |
735 |
R2K3K_ENTRYHI_ASID_MASK) >> |
R2K3K_ENTRYHI_ASID_MASK; |
|
R2K3K_ENTRYHI_ASID_SHIFT; |
|
736 |
if ((cp->reg[COP0_ENTRYHI] & |
if ((cp->reg[COP0_ENTRYHI] & |
737 |
R2K3K_ENTRYHI_ASID_MASK) != |
R2K3K_ENTRYHI_ASID_MASK) != |
738 |
(tmp & R2K3K_ENTRYHI_ASID_MASK)) |
(tmp & R2K3K_ENTRYHI_ASID_MASK)) |
745 |
inval = 1; |
inval = 1; |
746 |
break; |
break; |
747 |
} |
} |
748 |
|
|
749 |
if (inval) |
if (inval) |
750 |
invalidate_translation_caches(cpu, 1, 0, 0, |
invalidate_asid(cpu, old_asid); |
751 |
old_asid); |
|
752 |
unimpl = 0; |
unimpl = 0; |
753 |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K && |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K && |
754 |
(tmp & 0x3f)!=0) { |
(tmp & 0x3f)!=0) { |
755 |
/* char *symbol; |
/* char *symbol; |
756 |
uint64_t offset; |
uint64_t offset; |
757 |
symbol = get_symbol_name(cpu-> |
symbol = get_symbol_name(cpu->pc, |
758 |
cd.mips.pc_last, &offset); |
&offset); |
759 |
fatal("YO! pc = 0x%08llx <%s> " |
fatal("YO! pc = 0x%08llx <%s> " |
760 |
"hi=%016llx\n", (long long)cpu-> |
"hi=%016llx\n", (long long)cpu->pc, |
761 |
cd.mips.pc_last, symbol? symbol : |
symbol? symbol : |
762 |
"no symbol", (long long)tmp); */ |
"no symbol", (long long)tmp); */ |
763 |
tmp &= ~0x3f; |
tmp &= ~0x3f; |
764 |
} |
} |
804 |
case COP0_STATUS: |
case COP0_STATUS: |
805 |
oldmode = cp->reg[COP0_STATUS]; |
oldmode = cp->reg[COP0_STATUS]; |
806 |
tmp &= ~(1 << 21); /* bit 21 is read-only */ |
tmp &= ~(1 << 21); /* bit 21 is read-only */ |
|
#if 0 |
|
|
/* Why was this here? It should not be necessary. */ |
|
|
|
|
|
/* Changing from kernel to user mode? Then |
|
|
invalidate some translation caches: */ |
|
|
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K) { |
|
|
if (!(oldmode & MIPS1_SR_KU_CUR) |
|
|
&& (tmp & MIPS1_SR_KU_CUR)) |
|
|
invalidate_translation_caches(cpu, |
|
|
0, 0, 1, 0); |
|
|
} else { |
|
|
/* TODO: don't hardcode */ |
|
|
if ((oldmode & 0xff) != (tmp & 0xff)) |
|
|
invalidate_translation_caches( |
|
|
cpu, 0, 0, 1, 0); |
|
|
} |
|
|
#endif |
|
807 |
|
|
808 |
|
/* |
809 |
|
* When isolating caches, invalidate all translations. |
810 |
|
* During the isolation, a special hack in memory_rw.c |
811 |
|
* prevents translation tables from being updated, so |
812 |
|
* the translation caches don't have to be invalidated |
813 |
|
* when switching back to normal mode. |
814 |
|
*/ |
815 |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K && |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K && |
816 |
(oldmode & MIPS1_ISOL_CACHES) != |
(oldmode & MIPS1_ISOL_CACHES) != |
817 |
(tmp & MIPS1_ISOL_CACHES)) { |
(tmp & MIPS1_ISOL_CACHES)) { |
818 |
/* R3000-style caches when isolated are |
/* Invalidate everything if we are switching |
819 |
treated in bintrans mode by changing |
to isolated mode: */ |
|
the vaddr_to_hostaddr_table0 pointer: */ |
|
820 |
if (tmp & MIPS1_ISOL_CACHES) { |
if (tmp & MIPS1_ISOL_CACHES) { |
821 |
/* 2-level table: */ |
cpu->invalidate_translation_caches( |
822 |
cpu->cd.mips.vaddr_to_hostaddr_table0 = |
cpu, 0, INVALIDATE_ALL); |
|
tmp & MIPS1_SWAP_CACHES? |
|
|
cpu->cd.mips. |
|
|
vaddr_to_hostaddr_table0_cacheisol_i |
|
|
: cpu->cd.mips. |
|
|
vaddr_to_hostaddr_table0_cacheisol_d; |
|
|
|
|
|
/* 1M-entry table: */ |
|
|
cpu->cd.mips.host_load = |
|
|
cpu->cd.mips.host_store = |
|
|
cpu->cd.mips.huge_r2k3k_cache_table; |
|
|
} else { |
|
|
/* 2-level table: */ |
|
|
cpu->cd.mips.vaddr_to_hostaddr_table0 = |
|
|
cpu->cd.mips. |
|
|
vaddr_to_hostaddr_table0_kernel; |
|
|
|
|
|
/* TODO: cpu->cd.mips. |
|
|
vaddr_to_hostaddr_table0_user; */ |
|
|
|
|
|
/* 1M-entry table: */ |
|
|
cpu->cd.mips.host_load = |
|
|
cpu->cd.mips.host_load_orig; |
|
|
cpu->cd.mips.host_store = |
|
|
cpu->cd.mips.host_store_orig; |
|
823 |
} |
} |
824 |
|
|
825 |
|
#if 1 |
826 |
|
/* |
827 |
|
* NOTE: This is not needed for NetBSD, but |
828 |
|
* Ultrix and Linux still needs this. They |
829 |
|
* shouldn't, though. Something else is buggy. |
830 |
|
*/ |
831 |
|
cpu_create_or_reset_tc(cpu); |
832 |
|
#endif |
833 |
} |
} |
834 |
unimpl = 0; |
unimpl = 0; |
835 |
break; |
break; |
838 |
affects IM bits 0 and 1: */ |
affects IM bits 0 and 1: */ |
839 |
cp->reg[reg_nr] &= ~(0x3 << STATUS_IM_SHIFT); |
cp->reg[reg_nr] &= ~(0x3 << STATUS_IM_SHIFT); |
840 |
cp->reg[reg_nr] |= (tmp & (0x3 << STATUS_IM_SHIFT)); |
cp->reg[reg_nr] |= (tmp & (0x3 << STATUS_IM_SHIFT)); |
|
if (!(cp->reg[COP0_CAUSE] & STATUS_IM_MASK)) |
|
|
cpu->cd.mips.cached_interrupt_is_possible = 0; |
|
|
else |
|
|
cpu->cd.mips.cached_interrupt_is_possible = 1; |
|
841 |
return; |
return; |
842 |
case COP0_FRAMEMASK: |
case COP0_FRAMEMASK: |
843 |
/* TODO: R10000 */ |
/* TODO: R10000 */ |
913 |
* |
* |
914 |
* TODO: Move this to some other file? |
* TODO: Move this to some other file? |
915 |
*/ |
*/ |
916 |
#define FMT_S 16 |
static int mips_fmt_to_ieee_fmt[32] = { |
917 |
#define FMT_D 17 |
0, 0, 0, 0, 0, 0, 0, 0, |
918 |
#define FMT_W 20 |
0, 0, 0, 0, 0, 0, 0, 0, |
919 |
#define FMT_L 21 |
IEEE_FMT_S, IEEE_FMT_D, 0, 0, |
920 |
#define FMT_PS 22 |
IEEE_FMT_W, IEEE_FMT_L, /* PS (Paired Single) */ 0, 0, |
921 |
|
0, 0, 0, 0, 0, 0, 0, 0 }; |
922 |
|
|
923 |
|
static char *fmtname[32] = { |
924 |
|
"0", "1", "2", "3", "4", "5", "6", "7", |
925 |
|
"8", "9", "10", "11", "12", "13", "14", "15", |
926 |
|
"s", "d", "18", "19", "w", "l", "ps", "23", |
927 |
|
"24", "25", "26", "27", "28", "29", "30", "31" }; |
928 |
|
|
929 |
|
static char *ccname[16] = { |
930 |
|
"f", "un", "eq", "ueq", "olt", "ult", "ole", "ule", |
931 |
|
"sf", "ngle", "seq", "ngl", "lt", "nge", "le", "ngt" }; |
932 |
|
|
933 |
#define FPU_OP_ADD 1 |
#define FPU_OP_ADD 1 |
934 |
#define FPU_OP_SUB 2 |
#define FPU_OP_SUB 2 |
940 |
#define FPU_OP_C 8 |
#define FPU_OP_C 8 |
941 |
#define FPU_OP_ABS 9 |
#define FPU_OP_ABS 9 |
942 |
#define FPU_OP_NEG 10 |
#define FPU_OP_NEG 10 |
943 |
/* TODO: CEIL.L, CEIL.W, FLOOR.L, FLOOR.W, RECIP, ROUND.L, ROUND.W, |
/* TODO: CEIL.L, CEIL.W, FLOOR.L, FLOOR.W, RECIP, ROUND.L, ROUND.W, RSQRT */ |
|
RSQRT */ |
|
|
|
|
|
|
|
|
struct internal_float_value { |
|
|
double f; |
|
|
int nan; |
|
|
}; |
|
|
|
|
|
|
|
|
/* |
|
|
* fpu_interpret_float_value(): |
|
|
* |
|
|
* Interprets a float value from binary IEEE format into an |
|
|
* internal_float_value struct. |
|
|
*/ |
|
|
static void fpu_interpret_float_value(uint64_t reg, |
|
|
struct internal_float_value *fvp, int fmt) |
|
|
{ |
|
|
int n_frac = 0, n_exp = 0; |
|
|
int i, nan, sign = 0, exponent; |
|
|
double fraction; |
|
|
|
|
|
memset(fvp, 0, sizeof(struct internal_float_value)); |
|
|
|
|
|
/* n_frac and n_exp: */ |
|
|
switch (fmt) { |
|
|
case FMT_S: n_frac = 23; n_exp = 8; break; |
|
|
case FMT_W: n_frac = 31; n_exp = 0; break; |
|
|
case FMT_D: n_frac = 52; n_exp = 11; break; |
|
|
case FMT_L: n_frac = 63; n_exp = 0; break; |
|
|
default: |
|
|
fatal("fpu_interpret_float_value(): " |
|
|
"unimplemented format %i\n", fmt); |
|
|
} |
|
|
|
|
|
/* exponent: */ |
|
|
exponent = 0; |
|
|
switch (fmt) { |
|
|
case FMT_W: |
|
|
reg &= 0xffffffffULL; |
|
|
case FMT_L: |
|
|
break; |
|
|
case FMT_S: |
|
|
reg &= 0xffffffffULL; |
|
|
case FMT_D: |
|
|
exponent = (reg >> n_frac) & ((1 << n_exp) - 1); |
|
|
exponent -= (1 << (n_exp-1)) - 1; |
|
|
break; |
|
|
default: |
|
|
fatal("fpu_interpret_float_value(): unimplemented " |
|
|
"format %i\n", fmt); |
|
|
} |
|
|
|
|
|
/* nan: */ |
|
|
nan = 0; |
|
|
switch (fmt) { |
|
|
case FMT_S: |
|
|
if (reg == 0x7fffffffULL || reg == 0x7fbfffffULL) |
|
|
nan = 1; |
|
|
break; |
|
|
case FMT_D: |
|
|
if (reg == 0x7fffffffffffffffULL || |
|
|
reg == 0x7ff7ffffffffffffULL) |
|
|
nan = 1; |
|
|
break; |
|
|
} |
|
|
|
|
|
if (nan) { |
|
|
fvp->f = 1.0; |
|
|
goto no_reasonable_result; |
|
|
} |
|
|
|
|
|
/* fraction: */ |
|
|
fraction = 0.0; |
|
|
switch (fmt) { |
|
|
case FMT_W: |
|
|
{ |
|
|
int32_t r_int = reg; |
|
|
fraction = r_int; |
|
|
} |
|
|
break; |
|
|
case FMT_L: |
|
|
{ |
|
|
int64_t r_int = reg; |
|
|
fraction = r_int; |
|
|
} |
|
|
break; |
|
|
case FMT_S: |
|
|
case FMT_D: |
|
|
/* sign: */ |
|
|
sign = (reg >> 31) & 1; |
|
|
if (fmt == FMT_D) |
|
|
sign = (reg >> 63) & 1; |
|
|
|
|
|
fraction = 0.0; |
|
|
for (i=0; i<n_frac; i++) { |
|
|
int bit = (reg >> i) & 1; |
|
|
fraction /= 2.0; |
|
|
if (bit) |
|
|
fraction += 1.0; |
|
|
} |
|
|
/* Add implicit bit 0: */ |
|
|
fraction = (fraction / 2.0) + 1.0; |
|
|
break; |
|
|
default: |
|
|
fatal("fpu_interpret_float_value(): " |
|
|
"unimplemented format %i\n", fmt); |
|
|
} |
|
|
|
|
|
/* form the value: */ |
|
|
fvp->f = fraction; |
|
|
|
|
|
/* fatal("load reg=%016llx sign=%i exponent=%i fraction=%f ", |
|
|
(long long)reg, sign, exponent, fraction); */ |
|
|
|
|
|
/* TODO: this is awful for exponents of large magnitude. */ |
|
|
if (exponent > 0) { |
|
|
/* |
|
|
* NOTE / TODO: |
|
|
* |
|
|
* This is an ulgy workaround on Alpha, where it seems that |
|
|
* multiplying by 2, 1024 times causes a floating point |
|
|
* exception. (Triggered by running for example NetBSD/pmax |
|
|
* 2.0 on an Alpha.) |
|
|
*/ |
|
|
if (exponent == 1024) |
|
|
exponent = 1023; |
|
|
|
|
|
while (exponent-- > 0) |
|
|
fvp->f *= 2.0; |
|
|
} else if (exponent < 0) { |
|
|
while (exponent++ < 0) |
|
|
fvp->f /= 2.0; |
|
|
} |
|
|
|
|
|
if (sign) |
|
|
fvp->f = -fvp->f; |
|
|
|
|
|
no_reasonable_result: |
|
|
fvp->nan = nan; |
|
|
|
|
|
/* fatal("f = %f\n", fvp->f); */ |
|
|
} |
|
944 |
|
|
945 |
|
|
946 |
/* |
/* |
951 |
static void fpu_store_float_value(struct mips_coproc *cp, int fd, |
static void fpu_store_float_value(struct mips_coproc *cp, int fd, |
952 |
double nf, int fmt, int nan) |
double nf, int fmt, int nan) |
953 |
{ |
{ |
954 |
int n_frac = 0, n_exp = 0, signofs=0; |
int ieee_fmt = mips_fmt_to_ieee_fmt[fmt]; |
955 |
int i, exponent; |
uint64_t r = ieee_store_float_value(nf, ieee_fmt, nan); |
|
uint64_t r = 0, r2; |
|
|
int64_t r3; |
|
|
|
|
|
/* n_frac and n_exp: */ |
|
|
switch (fmt) { |
|
|
case FMT_S: n_frac = 23; n_exp = 8; signofs = 31; break; |
|
|
case FMT_W: n_frac = 31; n_exp = 0; signofs = 31; break; |
|
|
case FMT_D: n_frac = 52; n_exp = 11; signofs = 63; break; |
|
|
case FMT_L: n_frac = 63; n_exp = 0; signofs = 63; break; |
|
|
default: |
|
|
fatal("fpu_store_float_value(): unimplemented format" |
|
|
" %i\n", fmt); |
|
|
} |
|
|
|
|
|
if ((fmt == FMT_S || fmt == FMT_D) && nan) |
|
|
goto store_nan; |
|
|
|
|
|
/* fraction: */ |
|
|
switch (fmt) { |
|
|
case FMT_W: |
|
|
case FMT_L: |
|
|
/* |
|
|
* This causes an implicit conversion of double to integer. |
|
|
* If nf < 0.0, then r2 will begin with a sequence of binary |
|
|
* 1's, which is ok. |
|
|
*/ |
|
|
r3 = nf; |
|
|
r2 = r3; |
|
|
r |= r2; |
|
|
|
|
|
if (fmt == FMT_W) |
|
|
r &= 0xffffffffULL; |
|
|
break; |
|
|
case FMT_S: |
|
|
case FMT_D: |
|
|
/* fatal("store f=%f ", nf); */ |
|
|
|
|
|
/* sign bit: */ |
|
|
if (nf < 0.0) { |
|
|
r |= ((uint64_t)1 << signofs); |
|
|
nf = -nf; |
|
|
} |
|
|
|
|
|
/* |
|
|
* How to convert back from double to exponent + fraction: |
|
|
* We want fraction to be 1.xxx, that is |
|
|
* 1.0 <= fraction < 2.0 |
|
|
* |
|
|
* This method is very slow but should work: |
|
|
*/ |
|
|
exponent = 0; |
|
|
while (nf < 1.0 && exponent > -1023) { |
|
|
nf *= 2.0; |
|
|
exponent --; |
|
|
} |
|
|
while (nf >= 2.0 && exponent < 1023) { |
|
|
nf /= 2.0; |
|
|
exponent ++; |
|
|
} |
|
|
|
|
|
/* Here: 1.0 <= nf < 2.0 */ |
|
|
/* fatal(" nf=%f", nf); */ |
|
|
nf -= 1.0; /* remove implicit first bit */ |
|
|
for (i=n_frac-1; i>=0; i--) { |
|
|
nf *= 2.0; |
|
|
if (nf >= 1.0) { |
|
|
r |= ((uint64_t)1 << i); |
|
|
nf -= 1.0; |
|
|
} |
|
|
/* printf("\n i=%2i r=%016llx\n", i, (long long)r); */ |
|
|
} |
|
|
|
|
|
/* Insert the exponent into the resulting word: */ |
|
|
/* (First bias, then make sure it's within range) */ |
|
|
exponent += (((uint64_t)1 << (n_exp-1)) - 1); |
|
|
if (exponent < 0) |
|
|
exponent = 0; |
|
|
if (exponent >= ((int64_t)1 << n_exp)) |
|
|
exponent = ((int64_t)1 << n_exp) - 1; |
|
|
r |= (uint64_t)exponent << n_frac; |
|
|
|
|
|
/* Special case for 0.0: */ |
|
|
if (exponent == 0) |
|
|
r = 0; |
|
|
|
|
|
/* fatal(" exp=%i, r = %016llx\n", exponent, (long long)r); */ |
|
|
|
|
|
break; |
|
|
default: |
|
|
/* TODO */ |
|
|
fatal("fpu_store_float_value(): unimplemented format " |
|
|
"%i\n", fmt); |
|
|
} |
|
|
|
|
|
store_nan: |
|
|
if (nan) { |
|
|
if (fmt == FMT_S) |
|
|
r = 0x7fffffffULL; |
|
|
else if (fmt == FMT_D) |
|
|
r = 0x7fffffffffffffffULL; |
|
|
else |
|
|
r = 0x7fffffffULL; |
|
|
} |
|
956 |
|
|
957 |
/* |
/* |
958 |
* TODO: this is for 32-bit mode. It has to be updated later |
* TODO: This is for 32-bit mode. It has to be updated later |
959 |
* for 64-bit coprocessor stuff. |
* for 64-bit coprocessor functionality! |
960 |
*/ |
*/ |
961 |
if (fmt == FMT_D || fmt == FMT_L) { |
if (fmt == COP1_FMT_D || fmt == COP1_FMT_L) { |
962 |
cp->reg[fd] = r & 0xffffffffULL; |
cp->reg[fd] = r & 0xffffffffULL; |
963 |
cp->reg[(fd+1) & 31] = (r >> 32) & 0xffffffffULL; |
cp->reg[(fd+1) & 31] = (r >> 32) & 0xffffffffULL; |
964 |
|
|
978 |
/* |
/* |
979 |
* fpu_op(): |
* fpu_op(): |
980 |
* |
* |
981 |
* Perform a floating-point operation. For those of fs and ft |
* Perform a floating-point operation. For those of fs and ft that are >= 0, |
982 |
* that are >= 0, those numbers are interpreted into local |
* those numbers are interpreted into local variables. |
|
* variables. |
|
983 |
* |
* |
984 |
* Only FPU_OP_C (compare) returns anything of interest, 1 for |
* Only FPU_OP_C (compare) returns anything of interest, 1 for true, 0 for |
985 |
* true, 0 for false. |
* false. |
986 |
*/ |
*/ |
987 |
static int fpu_op(struct cpu *cpu, struct mips_coproc *cp, int op, int fmt, |
static int fpu_op(struct cpu *cpu, struct mips_coproc *cp, int op, int fmt, |
988 |
int ft, int fs, int fd, int cond, int output_fmt) |
int ft, int fs, int fd, int cond, int output_fmt) |
989 |
{ |
{ |
990 |
/* Potentially two input registers, fs and ft */ |
/* Potentially two input registers, fs and ft */ |
991 |
struct internal_float_value float_value[2]; |
struct ieee_float_value float_value[2]; |
992 |
int unordered, nan; |
int unordered, nan, ieee_fmt = mips_fmt_to_ieee_fmt[fmt]; |
993 |
uint64_t fs_v = 0; |
uint64_t fs_v = 0; |
994 |
double nf; |
double nf; |
995 |
|
|
997 |
fs_v = cp->reg[fs]; |
fs_v = cp->reg[fs]; |
998 |
/* TODO: register-pair mode and plain |
/* TODO: register-pair mode and plain |
999 |
register mode? "FR" bit? */ |
register mode? "FR" bit? */ |
1000 |
if (fmt == FMT_D || fmt == FMT_L) |
if (fmt == COP1_FMT_D || fmt == COP1_FMT_L) |
1001 |
fs_v = (fs_v & 0xffffffffULL) + |
fs_v = (fs_v & 0xffffffffULL) + |
1002 |
(cp->reg[(fs + 1) & 31] << 32); |
(cp->reg[(fs + 1) & 31] << 32); |
1003 |
fpu_interpret_float_value(fs_v, &float_value[0], fmt); |
ieee_interpret_float_value(fs_v, &float_value[0], ieee_fmt); |
1004 |
} |
} |
1005 |
if (ft >= 0) { |
if (ft >= 0) { |
1006 |
uint64_t v = cp->reg[ft]; |
uint64_t v = cp->reg[ft]; |
1007 |
/* TODO: register-pair mode and |
/* TODO: register-pair mode and |
1008 |
plain register mode? "FR" bit? */ |
plain register mode? "FR" bit? */ |
1009 |
if (fmt == FMT_D || fmt == FMT_L) |
if (fmt == COP1_FMT_D || fmt == COP1_FMT_L) |
1010 |
v = (v & 0xffffffffULL) + |
v = (v & 0xffffffffULL) + |
1011 |
(cp->reg[(ft + 1) & 31] << 32); |
(cp->reg[(ft + 1) & 31] << 32); |
1012 |
fpu_interpret_float_value(v, &float_value[1], fmt); |
ieee_interpret_float_value(v, &float_value[1], ieee_fmt); |
1013 |
} |
} |
1014 |
|
|
1015 |
switch (op) { |
switch (op) { |
1084 |
* TODO: this is for 32-bit mode. It has to be updated later |
* TODO: this is for 32-bit mode. It has to be updated later |
1085 |
* for 64-bit coprocessor stuff. |
* for 64-bit coprocessor stuff. |
1086 |
*/ |
*/ |
1087 |
if (output_fmt == FMT_D || output_fmt == FMT_L) { |
if (output_fmt == COP1_FMT_D || output_fmt == COP1_FMT_L) { |
1088 |
cp->reg[fd] = fs_v & 0xffffffffULL; |
cp->reg[fd] = fs_v & 0xffffffffULL; |
1089 |
cp->reg[(fd+1) & 31] = (fs_v >> 32) & 0xffffffffULL; |
cp->reg[(fd+1) & 31] = (fs_v >> 32) & 0xffffffffULL; |
1090 |
if (cp->reg[fd] & 0x80000000ULL) |
if (cp->reg[fd] & 0x80000000ULL) |
1198 |
if (unassemble_only) |
if (unassemble_only) |
1199 |
return 1; |
return 1; |
1200 |
|
|
1201 |
if (cpu->cd.mips.delay_slot) { |
if (cpu->delay_slot) { |
1202 |
fatal("%s: jump inside a jump's delay slot, " |
fatal("%s: jump inside a jump's delay slot, " |
1203 |
"or similar. TODO\n", instr_mnem); |
"or similar. TODO\n", instr_mnem); |
1204 |
cpu->running = 0; |
cpu->running = 0; |
1207 |
|
|
1208 |
/* Both the FCCR and FCSR contain condition code bits... */ |
/* Both the FCCR and FCSR contain condition code bits... */ |
1209 |
if (cc == 0) |
if (cc == 0) |
1210 |
cond_true = (cp->fcr[FPU_FCSR] >> FCSR_FCC0_SHIFT) & 1; |
cond_true = (cp->fcr[MIPS_FPU_FCSR] >> |
1211 |
|
MIPS_FCSR_FCC0_SHIFT) & 1; |
1212 |
else |
else |
1213 |
cond_true = (cp->fcr[FPU_FCSR] >> |
cond_true = (cp->fcr[MIPS_FPU_FCSR] >> |
1214 |
(FCSR_FCC1_SHIFT + cc-1)) & 1; |
(MIPS_FCSR_FCC1_SHIFT + cc-1)) & 1; |
1215 |
|
|
1216 |
if (!tf) |
if (!tf) |
1217 |
cond_true = !cond_true; |
cond_true = !cond_true; |
1218 |
|
|
1219 |
if (cond_true) { |
if (cond_true) { |
1220 |
cpu->cd.mips.delay_slot = TO_BE_DELAYED; |
cpu->delay_slot = TO_BE_DELAYED; |
1221 |
cpu->cd.mips.delay_jmpaddr = cpu->pc + (imm << 2); |
cpu->delay_jmpaddr = cpu->pc + (imm << 2); |
1222 |
} else { |
} else { |
1223 |
/* "likely": */ |
/* "likely": */ |
1224 |
if (nd) { |
if (nd) { |
1233 |
/* add.fmt: Floating-point add */ |
/* add.fmt: Floating-point add */ |
1234 |
if ((function & 0x0000003f) == 0x00000000) { |
if ((function & 0x0000003f) == 0x00000000) { |
1235 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1236 |
debug("add.%i\tr%i,r%i,r%i\n", fmt, fd, fs, ft); |
debug("add.%s\tr%i,r%i,r%i\n", |
1237 |
|
fmtname[fmt], fd, fs, ft); |
1238 |
if (unassemble_only) |
if (unassemble_only) |
1239 |
return 1; |
return 1; |
1240 |
|
|
1245 |
/* sub.fmt: Floating-point subtract */ |
/* sub.fmt: Floating-point subtract */ |
1246 |
if ((function & 0x0000003f) == 0x00000001) { |
if ((function & 0x0000003f) == 0x00000001) { |
1247 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1248 |
debug("sub.%i\tr%i,r%i,r%i\n", fmt, fd, fs, ft); |
debug("sub.%s\tr%i,r%i,r%i\n", |
1249 |
|
fmtname[fmt], fd, fs, ft); |
1250 |
if (unassemble_only) |
if (unassemble_only) |
1251 |
return 1; |
return 1; |
1252 |
|
|
1257 |
/* mul.fmt: Floating-point multiply */ |
/* mul.fmt: Floating-point multiply */ |
1258 |
if ((function & 0x0000003f) == 0x00000002) { |
if ((function & 0x0000003f) == 0x00000002) { |
1259 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1260 |
debug("mul.%i\tr%i,r%i,r%i\n", fmt, fd, fs, ft); |
debug("mul.%s\tr%i,r%i,r%i\n", |
1261 |
|
fmtname[fmt], fd, fs, ft); |
1262 |
if (unassemble_only) |
if (unassemble_only) |
1263 |
return 1; |
return 1; |
1264 |
|
|
1269 |
/* div.fmt: Floating-point divide */ |
/* div.fmt: Floating-point divide */ |
1270 |
if ((function & 0x0000003f) == 0x00000003) { |
if ((function & 0x0000003f) == 0x00000003) { |
1271 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1272 |
debug("div.%i\tr%i,r%i,r%i\n", fmt, fd, fs, ft); |
debug("div.%s\tr%i,r%i,r%i\n", |
1273 |
|
fmtname[fmt], fd, fs, ft); |
1274 |
if (unassemble_only) |
if (unassemble_only) |
1275 |
return 1; |
return 1; |
1276 |
|
|
1281 |
/* sqrt.fmt: Floating-point square-root */ |
/* sqrt.fmt: Floating-point square-root */ |
1282 |
if ((function & 0x001f003f) == 0x00000004) { |
if ((function & 0x001f003f) == 0x00000004) { |
1283 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1284 |
debug("sqrt.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("sqrt.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1285 |
if (unassemble_only) |
if (unassemble_only) |
1286 |
return 1; |
return 1; |
1287 |
|
|
1292 |
/* abs.fmt: Floating-point absolute value */ |
/* abs.fmt: Floating-point absolute value */ |
1293 |
if ((function & 0x001f003f) == 0x00000005) { |
if ((function & 0x001f003f) == 0x00000005) { |
1294 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1295 |
debug("abs.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("abs.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1296 |
if (unassemble_only) |
if (unassemble_only) |
1297 |
return 1; |
return 1; |
1298 |
|
|
1303 |
/* mov.fmt: Floating-point (non-arithmetic) move */ |
/* mov.fmt: Floating-point (non-arithmetic) move */ |
1304 |
if ((function & 0x0000003f) == 0x00000006) { |
if ((function & 0x0000003f) == 0x00000006) { |
1305 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1306 |
debug("mov.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("mov.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1307 |
if (unassemble_only) |
if (unassemble_only) |
1308 |
return 1; |
return 1; |
1309 |
|
|
1314 |
/* neg.fmt: Floating-point negate */ |
/* neg.fmt: Floating-point negate */ |
1315 |
if ((function & 0x001f003f) == 0x00000007) { |
if ((function & 0x001f003f) == 0x00000007) { |
1316 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1317 |
debug("neg.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("neg.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1318 |
if (unassemble_only) |
if (unassemble_only) |
1319 |
return 1; |
return 1; |
1320 |
|
|
1325 |
/* trunc.l.fmt: Truncate */ |
/* trunc.l.fmt: Truncate */ |
1326 |
if ((function & 0x001f003f) == 0x00000009) { |
if ((function & 0x001f003f) == 0x00000009) { |
1327 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1328 |
debug("trunc.l.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("trunc.l.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1329 |
if (unassemble_only) |
if (unassemble_only) |
1330 |
return 1; |
return 1; |
1331 |
|
|
1332 |
/* TODO: not CVT? */ |
/* TODO: not CVT? */ |
1333 |
|
|
1334 |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, FMT_L); |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, COP1_FMT_L); |
1335 |
return 1; |
return 1; |
1336 |
} |
} |
1337 |
|
|
1338 |
/* trunc.w.fmt: Truncate */ |
/* trunc.w.fmt: Truncate */ |
1339 |
if ((function & 0x001f003f) == 0x0000000d) { |
if ((function & 0x001f003f) == 0x0000000d) { |
1340 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1341 |
debug("trunc.w.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("trunc.w.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1342 |
if (unassemble_only) |
if (unassemble_only) |
1343 |
return 1; |
return 1; |
1344 |
|
|
1345 |
/* TODO: not CVT? */ |
/* TODO: not CVT? */ |
1346 |
|
|
1347 |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, FMT_W); |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, COP1_FMT_W); |
1348 |
return 1; |
return 1; |
1349 |
} |
} |
1350 |
|
|
1354 |
int bit; |
int bit; |
1355 |
|
|
1356 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1357 |
debug("c.%i.%i\tr%i,r%i,r%i\n", cond, fmt, cc, fs, ft); |
debug("c.%s.%s\tcc%i,r%i,r%i\n", ccname[cond], |
1358 |
|
fmtname[fmt], cc, fs, ft); |
1359 |
if (unassemble_only) |
if (unassemble_only) |
1360 |
return 1; |
return 1; |
1361 |
|
|
1367 |
* FCCR: bits 7..0 |
* FCCR: bits 7..0 |
1368 |
* FCSR: bits 31..25 and 23 |
* FCSR: bits 31..25 and 23 |
1369 |
*/ |
*/ |
1370 |
cp->fcr[FPU_FCCR] &= ~(1 << cc); |
cp->fcr[MIPS_FPU_FCCR] &= ~(1 << cc); |
1371 |
if (cond_true) |
if (cond_true) |
1372 |
cp->fcr[FPU_FCCR] |= (1 << cc); |
cp->fcr[MIPS_FPU_FCCR] |= (1 << cc); |
1373 |
|
|
1374 |
if (cc == 0) { |
if (cc == 0) { |
1375 |
bit = 1 << FCSR_FCC0_SHIFT; |
bit = 1 << MIPS_FCSR_FCC0_SHIFT; |
1376 |
cp->fcr[FPU_FCSR] &= ~bit; |
cp->fcr[MIPS_FPU_FCSR] &= ~bit; |
1377 |
if (cond_true) |
if (cond_true) |
1378 |
cp->fcr[FPU_FCSR] |= bit; |
cp->fcr[MIPS_FPU_FCSR] |= bit; |
1379 |
} else { |
} else { |
1380 |
bit = 1 << (FCSR_FCC1_SHIFT + cc-1); |
bit = 1 << (MIPS_FCSR_FCC1_SHIFT + cc-1); |
1381 |
cp->fcr[FPU_FCSR] &= ~bit; |
cp->fcr[MIPS_FPU_FCSR] &= ~bit; |
1382 |
if (cond_true) |
if (cond_true) |
1383 |
cp->fcr[FPU_FCSR] |= bit; |
cp->fcr[MIPS_FPU_FCSR] |= bit; |
1384 |
} |
} |
1385 |
|
|
1386 |
return 1; |
return 1; |
1389 |
/* cvt.s.fmt: Convert to single floating-point */ |
/* cvt.s.fmt: Convert to single floating-point */ |
1390 |
if ((function & 0x001f003f) == 0x00000020) { |
if ((function & 0x001f003f) == 0x00000020) { |
1391 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1392 |
debug("cvt.s.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("cvt.s.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1393 |
if (unassemble_only) |
if (unassemble_only) |
1394 |
return 1; |
return 1; |
1395 |
|
|
1396 |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, FMT_S); |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, COP1_FMT_S); |
1397 |
return 1; |
return 1; |
1398 |
} |
} |
1399 |
|
|
1400 |
/* cvt.d.fmt: Convert to double floating-point */ |
/* cvt.d.fmt: Convert to double floating-point */ |
1401 |
if ((function & 0x001f003f) == 0x00000021) { |
if ((function & 0x001f003f) == 0x00000021) { |
1402 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1403 |
debug("cvt.d.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("cvt.d.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1404 |
if (unassemble_only) |
if (unassemble_only) |
1405 |
return 1; |
return 1; |
1406 |
|
|
1407 |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, FMT_D); |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, COP1_FMT_D); |
1408 |
return 1; |
return 1; |
1409 |
} |
} |
1410 |
|
|
1411 |
/* cvt.w.fmt: Convert to word fixed-point */ |
/* cvt.w.fmt: Convert to word fixed-point */ |
1412 |
if ((function & 0x001f003f) == 0x00000024) { |
if ((function & 0x001f003f) == 0x00000024) { |
1413 |
if (cpu->machine->instruction_trace || unassemble_only) |
if (cpu->machine->instruction_trace || unassemble_only) |
1414 |
debug("cvt.w.%i\tr%i,r%i\n", fmt, fd, fs); |
debug("cvt.w.%s\tr%i,r%i\n", fmtname[fmt], fd, fs); |
1415 |
if (unassemble_only) |
if (unassemble_only) |
1416 |
return 1; |
return 1; |
1417 |
|
|
1418 |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, FMT_W); |
fpu_op(cpu, cp, FPU_OP_CVT, fmt, -1, fs, fd, -1, COP1_FMT_W); |
1419 |
return 1; |
return 1; |
1420 |
} |
} |
1421 |
|
|
1545 |
/* |
/* |
1546 |
* coproc_tlbwri(): |
* coproc_tlbwri(): |
1547 |
* |
* |
1548 |
* 'tlbwr' and 'tlbwi' |
* MIPS TLB write random (tlbwr) and write indexed (tlbwi) instructions. |
1549 |
*/ |
*/ |
1550 |
void coproc_tlbwri(struct cpu *cpu, int randomflag) |
void coproc_tlbwri(struct cpu *cpu, int randomflag) |
1551 |
{ |
{ |
1552 |
struct mips_coproc *cp = cpu->cd.mips.coproc[0]; |
struct mips_coproc *cp = cpu->cd.mips.coproc[0]; |
1553 |
int index, g_bit; |
int index, g_bit, old_asid = -1; |
1554 |
uint64_t oldvaddr; |
uint64_t oldvaddr; |
|
int old_asid = -1; |
|
|
|
|
|
/* |
|
|
* ... and the last instruction page: |
|
|
* |
|
|
* Some thoughts about this: Code running in |
|
|
* the kernel's physical address space has the |
|
|
* same vaddr->paddr translation, so the last |
|
|
* virtual page invalidation only needs to |
|
|
* happen if we are for some extremely weird |
|
|
* reason NOT running in the kernel's physical |
|
|
* address space. |
|
|
* |
|
|
* (An even insaner (but probably useless) |
|
|
* optimization would be to only invalidate |
|
|
* the last virtual page stuff if the TLB |
|
|
* update actually affects the vaddr in |
|
|
* question.) |
|
|
*/ |
|
|
|
|
|
if (cpu->pc < (uint64_t)0xffffffff80000000ULL || |
|
|
cpu->pc >= (uint64_t)0xffffffffc0000000ULL) |
|
|
cpu->cd.mips.pc_last_virtual_page = |
|
|
PC_LAST_PAGE_IMPOSSIBLE_VALUE; |
|
1555 |
|
|
1556 |
if (randomflag) { |
if (randomflag) { |
1557 |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K) |
if (cpu->cd.mips.cpu_type.exc_model == EXC3K) { |
1558 |
|
cp->reg[COP0_RANDOM] = |
1559 |
|
((random() % (cp->nr_of_tlbs - 8)) + 8) |
1560 |
|
<< R2K3K_RANDOM_SHIFT; |
1561 |
index = (cp->reg[COP0_RANDOM] & R2K3K_RANDOM_MASK) |
index = (cp->reg[COP0_RANDOM] & R2K3K_RANDOM_MASK) |
1562 |
>> R2K3K_RANDOM_SHIFT; |
>> R2K3K_RANDOM_SHIFT; |
1563 |
else |
} else { |
1564 |
|
cp->reg[COP0_RANDOM] = cp->reg[COP0_WIRED] + (random() |
1565 |
|
% (cp->nr_of_tlbs - cp->reg[COP0_WIRED])); |
1566 |
index = cp->reg[COP0_RANDOM] & RANDOM_MASK; |
index = cp->reg[COP0_RANDOM] & RANDOM_MASK; |
1567 |
|
} |
1568 |
} else { |
} else { |
1569 |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K) |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K) |
1570 |
index = (cp->reg[COP0_INDEX] & R2K3K_INDEX_MASK) |
index = (cp->reg[COP0_INDEX] & R2K3K_INDEX_MASK) |
1580 |
return; |
return; |
1581 |
} |
} |
1582 |
|
|
1583 |
|
|
1584 |
#if 0 |
#if 0 |
1585 |
/* Debug dump of the previous entry at that index: */ |
/* Debug dump of the previous entry at that index: */ |
1586 |
debug(" old entry at index = %04x", index); |
fatal("{ old TLB entry at index %02x:", index); |
1587 |
debug(" mask = %016llx", (long long) cp->tlbs[index].mask); |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K) { |
1588 |
debug(" hi = %016llx", (long long) cp->tlbs[index].hi); |
fatal(" hi=%08"PRIx32, (uint32_t)cp->tlbs[index].hi); |
1589 |
debug(" lo0 = %016llx", (long long) cp->tlbs[index].lo0); |
fatal(" lo=%08"PRIx32, (uint32_t)cp->tlbs[index].lo0); |
1590 |
debug(" lo1 = %016llx\n", (long long) cp->tlbs[index].lo1); |
} else { |
1591 |
|
if (cpu->is_32bit) { |
1592 |
|
fatal(" mask=%08"PRIx32,(uint32_t)cp->tlbs[index].mask); |
1593 |
|
fatal(" hi=%08"PRIx32, (uint32_t)cp->tlbs[index].hi); |
1594 |
|
fatal(" lo0=%08"PRIx32, (uint32_t)cp->tlbs[index].lo0); |
1595 |
|
fatal(" lo1=%08"PRIx32, (uint32_t)cp->tlbs[index].lo1); |
1596 |
|
} else { |
1597 |
|
fatal(" mask=%016"PRIx64, cp->tlbs[index].mask); |
1598 |
|
fatal(" hi=%016"PRIx64, cp->tlbs[index].hi); |
1599 |
|
fatal(" lo0=%016"PRIx64, cp->tlbs[index].lo0); |
1600 |
|
fatal(" lo1=%016"PRIx64, cp->tlbs[index].lo1); |
1601 |
|
} |
1602 |
|
} |
1603 |
|
fatal(" }\n"); |
1604 |
#endif |
#endif |
1605 |
|
|
1606 |
/* Translation caches must be invalidated: */ |
/* |
1607 |
|
* Any virtual address translation for the old TLB entry must be |
1608 |
|
* invalidated first: |
1609 |
|
*/ |
1610 |
|
|
1611 |
switch (cpu->cd.mips.cpu_type.mmu_model) { |
switch (cpu->cd.mips.cpu_type.mmu_model) { |
1612 |
|
|
1613 |
case MMU3K: |
case MMU3K: |
1614 |
oldvaddr = cp->tlbs[index].hi & R2K3K_ENTRYHI_VPN_MASK; |
oldvaddr = cp->tlbs[index].hi & R2K3K_ENTRYHI_VPN_MASK; |
1615 |
oldvaddr &= 0xffffffffULL; |
oldvaddr &= 0xffffffffULL; |
1618 |
old_asid = (cp->tlbs[index].hi & R2K3K_ENTRYHI_ASID_MASK) |
old_asid = (cp->tlbs[index].hi & R2K3K_ENTRYHI_ASID_MASK) |
1619 |
>> R2K3K_ENTRYHI_ASID_SHIFT; |
>> R2K3K_ENTRYHI_ASID_SHIFT; |
1620 |
|
|
1621 |
/* TODO: Bug? Why does this if need to be commented out? */ |
cpu->invalidate_translation_caches(cpu, oldvaddr, |
1622 |
|
INVALIDATE_VADDR); |
|
/* if (cp->tlbs[index].lo0 & ENTRYLO_V) */ |
|
|
invalidate_translation_caches(cpu, 0, oldvaddr, 0, 0); |
|
1623 |
break; |
break; |
1624 |
default: |
|
1625 |
if (cpu->cd.mips.cpu_type.mmu_model == MMU10K) { |
default:if (cpu->cd.mips.cpu_type.mmu_model == MMU10K) { |
1626 |
oldvaddr = cp->tlbs[index].hi & ENTRYHI_VPN2_MASK_R10K; |
oldvaddr = cp->tlbs[index].hi & ENTRYHI_VPN2_MASK_R10K; |
1627 |
/* 44 addressable bits: */ |
/* 44 addressable bits: */ |
1628 |
if (oldvaddr & 0x80000000000ULL) |
if (oldvaddr & 0x80000000000ULL) |
1629 |
oldvaddr |= 0xfffff00000000000ULL; |
oldvaddr |= 0xfffff00000000000ULL; |
1630 |
|
} else if (cpu->is_32bit) { |
1631 |
|
/* MIPS32 etc.: */ |
1632 |
|
oldvaddr = cp->tlbs[index].hi & ENTRYHI_VPN2_MASK; |
1633 |
|
oldvaddr = (int32_t)oldvaddr; |
1634 |
} else { |
} else { |
1635 |
/* Assume MMU4K */ |
/* Assume MMU4K */ |
1636 |
oldvaddr = cp->tlbs[index].hi & ENTRYHI_VPN2_MASK; |
oldvaddr = cp->tlbs[index].hi & ENTRYHI_VPN2_MASK; |
1639 |
oldvaddr |= 0xffffff0000000000ULL; |
oldvaddr |= 0xffffff0000000000ULL; |
1640 |
} |
} |
1641 |
|
|
1642 |
|
#if 1 |
1643 |
|
cpu->invalidate_translation_caches(cpu, 0, INVALIDATE_ALL); |
1644 |
|
#else |
1645 |
/* |
/* |
|
* Both pages: |
|
|
* |
|
1646 |
* TODO: non-4KB page sizes! |
* TODO: non-4KB page sizes! |
1647 |
*/ |
*/ |
1648 |
invalidate_translation_caches( |
cpu->invalidate_translation_caches(cpu, oldvaddr, |
1649 |
cpu, 0, oldvaddr & ~0x1fff, 0, 0); |
INVALIDATE_VADDR); |
1650 |
invalidate_translation_caches( |
cpu->invalidate_translation_caches(cpu, oldvaddr | 0x1000, |
1651 |
cpu, 0, (oldvaddr & ~0x1fff) | 0x1000, 0, 0); |
INVALIDATE_VADDR); |
1652 |
|
#endif |
1653 |
} |
} |
1654 |
|
|
1655 |
|
|
1664 |
if (cpu->cd.mips.cpu_type.mmu_model != MMU3K && |
if (cpu->cd.mips.cpu_type.mmu_model != MMU3K && |
1665 |
cpu->cd.mips.cpu_type.rev != MIPS_R4100) { |
cpu->cd.mips.cpu_type.rev != MIPS_R4100) { |
1666 |
uint64_t vaddr1, vaddr2; |
uint64_t vaddr1, vaddr2; |
1667 |
int i, asid; |
int i; |
1668 |
|
unsigned int asid; |
1669 |
|
|
1670 |
vaddr1 = cp->reg[COP0_ENTRYHI] & ENTRYHI_VPN2_MASK_R10K; |
vaddr1 = cp->reg[COP0_ENTRYHI] & ENTRYHI_VPN2_MASK_R10K; |
1671 |
asid = cp->reg[COP0_ENTRYHI] & ENTRYHI_ASID; |
asid = cp->reg[COP0_ENTRYHI] & ENTRYHI_ASID; |
1695 |
/* Write the new entry: */ |
/* Write the new entry: */ |
1696 |
|
|
1697 |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K) { |
if (cpu->cd.mips.cpu_type.mmu_model == MMU3K) { |
1698 |
uint64_t vaddr, paddr; |
uint32_t vaddr, paddr; |
1699 |
int wf = cp->reg[COP0_ENTRYLO0] & R2K3K_ENTRYLO_D? 1 : 0; |
int wf = cp->reg[COP0_ENTRYLO0] & R2K3K_ENTRYLO_D? 1 : 0; |
1700 |
unsigned char *memblock = NULL; |
unsigned char *memblock = NULL; |
1701 |
|
|
1705 |
vaddr = cp->reg[COP0_ENTRYHI] & R2K3K_ENTRYHI_VPN_MASK; |
vaddr = cp->reg[COP0_ENTRYHI] & R2K3K_ENTRYHI_VPN_MASK; |
1706 |
paddr = cp->reg[COP0_ENTRYLO0] & R2K3K_ENTRYLO_PFN_MASK; |
paddr = cp->reg[COP0_ENTRYLO0] & R2K3K_ENTRYLO_PFN_MASK; |
1707 |
|
|
1708 |
/* TODO: This is ugly. */ |
memblock = memory_paddr_to_hostaddr(cpu->mem, paddr, 0); |
|
if (paddr < 0x10000000) |
|
|
memblock = memory_paddr_to_hostaddr( |
|
|
cpu->mem, paddr, 1); |
|
1709 |
|
|
1710 |
|
/* Invalidate any code translation, if we are writing |
1711 |
|
a Dirty page to the TLB: */ |
1712 |
|
if (wf) { |
1713 |
|
cpu->invalidate_code_translation(cpu, paddr, |
1714 |
|
INVALIDATE_PADDR); |
1715 |
|
} |
1716 |
|
|
1717 |
|
/* If we have a memblock (host page) for the physical |
1718 |
|
page, then add a translation for it immediately: */ |
1719 |
if (memblock != NULL && |
if (memblock != NULL && |
1720 |
cp->reg[COP0_ENTRYLO0] & R2K3K_ENTRYLO_V) { |
cp->reg[COP0_ENTRYLO0] & R2K3K_ENTRYLO_V) { |
1721 |
memblock += (paddr & ((1 << BITS_PER_PAGETABLE) - 1)); |
memblock += (paddr & ((1 << BITS_PER_PAGETABLE) - 1)); |
|
|
|
|
/* |
|
|
* TODO: Hahaha, this is even uglier than the thing |
|
|
* above. Some OSes seem to map code pages read/write, |
|
|
* which causes the bintrans cache to be invalidated |
|
|
* even when it doesn't have to be. |
|
|
*/ |
|
|
/* if (vaddr < 0x10000000) */ |
|
|
wf = 0; |
|
|
|
|
1722 |
cpu->update_translation_table(cpu, vaddr, memblock, |
cpu->update_translation_table(cpu, vaddr, memblock, |
1723 |
wf, paddr); |
wf, paddr); |
1724 |
} |
} |
1743 |
if (g_bit) |
if (g_bit) |
1744 |
cp->tlbs[index].hi |= TLB_G; |
cp->tlbs[index].hi |= TLB_G; |
1745 |
} |
} |
|
} |
|
1746 |
|
|
1747 |
if (randomflag) { |
/* Invalidate any code translations, if we are writing |
1748 |
if (cpu->cd.mips.cpu_type.exc_model == EXC3K) { |
Dirty pages to the TLB: */ |
1749 |
cp->reg[COP0_RANDOM] = |
if (cp->reg[COP0_PAGEMASK] != 0 && |
1750 |
((random() % (cp->nr_of_tlbs - 8)) + 8) |
cp->reg[COP0_PAGEMASK] != 0x1800) { |
1751 |
<< R2K3K_RANDOM_SHIFT; |
printf("TODO: MASK = %08"PRIx32"\n", |
1752 |
|
(uint32_t)cp->reg[COP0_PAGEMASK]); |
1753 |
|
exit(1); |
1754 |
|
} |
1755 |
|
|
1756 |
|
if (cp->tlbs[index].lo0 & ENTRYLO_D) |
1757 |
|
cpu->invalidate_code_translation(cpu, |
1758 |
|
((cp->tlbs[index].lo0 & ENTRYLO_PFN_MASK) |
1759 |
|
>> ENTRYLO_PFN_SHIFT) << 12, |
1760 |
|
INVALIDATE_PADDR); |
1761 |
|
if (cp->tlbs[index].lo1 & ENTRYLO_D) |
1762 |
|
cpu->invalidate_code_translation(cpu, |
1763 |
|
((cp->tlbs[index].lo1 & ENTRYLO_PFN_MASK) |
1764 |
|
>> ENTRYLO_PFN_SHIFT) << 12, |
1765 |
|
INVALIDATE_PADDR); |
1766 |
|
|
1767 |
|
#if 1 |
1768 |
|
if (cpu->cd.mips.cpu_type.mmu_model == MMU10K) { |
1769 |
|
oldvaddr = cp->tlbs[index].hi & ENTRYHI_VPN2_MASK_R10K; |
1770 |
|
/* 44 addressable bits: */ |
1771 |
|
if (oldvaddr & 0x80000000000ULL) |
1772 |
|
oldvaddr |= 0xfffff00000000000ULL; |
1773 |
|
} else if (cpu->is_32bit) { |
1774 |
|
/* MIPS32 etc.: */ |
1775 |
|
oldvaddr = (int32_t)oldvaddr; |
1776 |
} else { |
} else { |
1777 |
cp->reg[COP0_RANDOM] = cp->reg[COP0_WIRED] + (random() |
/* Assume MMU4K */ |
1778 |
% (cp->nr_of_tlbs - cp->reg[COP0_WIRED])); |
oldvaddr = cp->tlbs[index].hi & ENTRYHI_VPN2_MASK; |
1779 |
|
/* 40 addressable bits: */ |
1780 |
|
if (oldvaddr & 0x8000000000ULL) |
1781 |
|
oldvaddr |= 0xffffff0000000000ULL; |
1782 |
} |
} |
1783 |
|
|
1784 |
|
cpu->invalidate_translation_caches(cpu, ((cp->tlbs[index].lo0 & |
1785 |
|
ENTRYLO_PFN_MASK) >> ENTRYLO_PFN_SHIFT) << 12, INVALIDATE_PADDR); |
1786 |
|
cpu->invalidate_translation_caches(cpu, ((cp->tlbs[index].lo1 & |
1787 |
|
ENTRYLO_PFN_MASK) >> ENTRYLO_PFN_SHIFT) << 12, INVALIDATE_PADDR); |
1788 |
|
|
1789 |
|
#endif |
1790 |
} |
} |
1791 |
} |
} |
1792 |
|
|
1798 |
*/ |
*/ |
1799 |
void coproc_rfe(struct cpu *cpu) |
void coproc_rfe(struct cpu *cpu) |
1800 |
{ |
{ |
|
int oldmode; |
|
|
|
|
|
oldmode = cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & MIPS1_SR_KU_CUR; |
|
|
|
|
1801 |
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] = |
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] = |
1802 |
(cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & ~0x3f) | |
(cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & ~0x3f) | |
1803 |
((cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & 0x3c) >> 2); |
((cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & 0x3c) >> 2); |
|
|
|
|
/* Changing from kernel to user mode? Then this is necessary: */ |
|
|
if (!oldmode && |
|
|
(cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & |
|
|
MIPS1_SR_KU_CUR)) |
|
|
invalidate_translation_caches(cpu, 0, 0, 1, 0); |
|
1804 |
} |
} |
1805 |
|
|
1806 |
|
|
1811 |
*/ |
*/ |
1812 |
void coproc_eret(struct cpu *cpu) |
void coproc_eret(struct cpu *cpu) |
1813 |
{ |
{ |
|
int oldmode, newmode; |
|
|
|
|
|
/* Kernel mode flag: */ |
|
|
oldmode = 0; |
|
|
if ((cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & MIPS3_SR_KSU_MASK) |
|
|
!= MIPS3_SR_KSU_USER |
|
|
|| (cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & (STATUS_EXL | |
|
|
STATUS_ERL)) || |
|
|
(cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & 1) == 0) |
|
|
oldmode = 1; |
|
|
|
|
1814 |
if (cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & STATUS_ERL) { |
if (cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & STATUS_ERL) { |
1815 |
cpu->pc = cpu->cd.mips.pc_last = |
cpu->pc = cpu->cd.mips.coproc[0]->reg[COP0_ERROREPC]; |
|
cpu->cd.mips.coproc[0]->reg[COP0_ERROREPC]; |
|
1816 |
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] &= ~STATUS_ERL; |
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] &= ~STATUS_ERL; |
1817 |
} else { |
} else { |
1818 |
cpu->pc = cpu->cd.mips.pc_last = |
cpu->pc = cpu->cd.mips.coproc[0]->reg[COP0_EPC]; |
1819 |
cpu->cd.mips.coproc[0]->reg[COP0_EPC]; |
cpu->delay_slot = 0; |
|
cpu->cd.mips.delay_slot = 0; |
|
1820 |
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] &= ~STATUS_EXL; |
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] &= ~STATUS_EXL; |
1821 |
} |
} |
1822 |
|
|
1823 |
cpu->cd.mips.rmw = 0; /* the "LL bit" */ |
cpu->cd.mips.rmw = 0; /* the "LL bit" */ |
|
|
|
|
/* New kernel mode flag: */ |
|
|
newmode = 0; |
|
|
if ((cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & MIPS3_SR_KSU_MASK) |
|
|
!= MIPS3_SR_KSU_USER |
|
|
|| (cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & (STATUS_EXL | |
|
|
STATUS_ERL)) || |
|
|
(cpu->cd.mips.coproc[0]->reg[COP0_STATUS] & 1) == 0) |
|
|
newmode = 1; |
|
|
|
|
|
#if 0 |
|
|
/* Changing from kernel to user mode? |
|
|
Then this is necessary: TODO */ |
|
|
if (oldmode && !newmode) |
|
|
invalidate_translation_caches(cpu, 0, 0, 1, 0); |
|
|
#endif |
|
1824 |
} |
} |
1825 |
|
|
1826 |
|
|
1850 |
return; |
return; |
1851 |
} |
} |
1852 |
|
|
|
#if 0 |
|
1853 |
/* No FPU? */ |
/* No FPU? */ |
1854 |
if (cpnr == 1 && (cpu->cd.mips.cpu_type.flags & NOFPU)) { |
if (cpnr == 1 && (cpu->cd.mips.cpu_type.flags & NOFPU)) { |
1855 |
mips_cpu_exception(cpu, EXCEPTION_CPU, 0, 0, cpnr, 0, 0, 0); |
mips_cpu_exception(cpu, EXCEPTION_CPU, 0, 0, cpnr, 0, 0, 0); |
1856 |
return; |
return; |
1857 |
} |
} |
|
#endif |
|
1858 |
|
|
1859 |
/* For quick reference: */ |
/* For quick reference: */ |
1860 |
copz = (function >> 21) & 31; |
copz = (function >> 21) & 31; |
1869 |
if (cpnr == 0) |
if (cpnr == 0) |
1870 |
debug("%s", cop0_names[rd]); |
debug("%s", cop0_names[rd]); |
1871 |
else |
else |
1872 |
debug("cpreg%i", rd); |
debug("r%i", rd); |
1873 |
if (function & 7) |
if (function & 7) |
1874 |
debug(",%i", (int)(function & 7)); |
debug(",%i", (int)(function & 7)); |
1875 |
debug("\n"); |
debug("\n"); |
1895 |
if (cpnr == 0) |
if (cpnr == 0) |
1896 |
debug("%s", cop0_names[rd]); |
debug("%s", cop0_names[rd]); |
1897 |
else |
else |
1898 |
debug("cpreg%i", rd); |
debug("r%i", rd); |
1899 |
if (function & 7) |
if (function & 7) |
1900 |
debug(",%i", (int)(function & 7)); |
debug(",%i", (int)(function & 7)); |
1901 |
debug("\n"); |
debug("\n"); |
1924 |
regnames[rt], fs); |
regnames[rt], fs); |
1925 |
return; |
return; |
1926 |
} |
} |
1927 |
cpu->cd.mips.gpr[rt] = cp->fcr[fs] & 0xffffffffULL; |
cpu->cd.mips.gpr[rt] = (int32_t)cp->fcr[fs]; |
|
if (cpu->cd.mips.gpr[rt] & 0x80000000ULL) |
|
|
cpu->cd.mips.gpr[rt] |= 0xffffffff00000000ULL; |
|
1928 |
/* TODO: implement delay for gpr[rt] |
/* TODO: implement delay for gpr[rt] |
1929 |
(for MIPS I,II,III only) */ |
(for MIPS I,II,III only) */ |
1930 |
return; |
return; |
1956 |
on status bits! */ |
on status bits! */ |
1957 |
|
|
1958 |
switch (fs) { |
switch (fs) { |
1959 |
case FPU_FCCR: |
case MIPS_FPU_FCCR: |
1960 |
cp->fcr[FPU_FCSR] = |
cp->fcr[MIPS_FPU_FCSR] = |
1961 |
(cp->fcr[FPU_FCSR] & |
(cp->fcr[MIPS_FPU_FCSR] & |
1962 |
0x017fffffULL) | ((tmp & 1) |
0x017fffffULL) | ((tmp & 1) |
1963 |
<< FCSR_FCC0_SHIFT) |
<< MIPS_FCSR_FCC0_SHIFT) |
1964 |
| (((tmp & 0xfe) >> 1) << |
| (((tmp & 0xfe) >> 1) << |
1965 |
FCSR_FCC1_SHIFT); |
MIPS_FCSR_FCC1_SHIFT); |
1966 |
break; |
break; |
1967 |
case FPU_FCSR: |
case MIPS_FPU_FCSR: |
1968 |
cp->fcr[FPU_FCCR] = |
cp->fcr[MIPS_FPU_FCCR] = |
1969 |
(cp->fcr[FPU_FCCR] & |
(cp->fcr[MIPS_FPU_FCCR] & |
1970 |
0xffffff00ULL) | ((tmp >> |
0xffffff00ULL) | ((tmp >> |
1971 |
FCSR_FCC0_SHIFT) & 1) | |
MIPS_FCSR_FCC0_SHIFT) & 1) | |
1972 |
(((tmp >> FCSR_FCC1_SHIFT) |
(((tmp >> |
1973 |
|
MIPS_FCSR_FCC1_SHIFT) |
1974 |
& 0x7f) << 1); |
& 0x7f) << 1); |
1975 |
break; |
break; |
1976 |
default: |
default: |
1994 |
return; |
return; |
1995 |
} |
} |
1996 |
|
|
|
/* For AU1500 and probably others: deret */ |
|
|
if (function == 0x0200001f) { |
|
|
if (unassemble_only) { |
|
|
debug("deret\n"); |
|
|
return; |
|
|
} |
|
|
|
|
|
/* |
|
|
* According to the MIPS64 manual, deret loads PC from the |
|
|
* DEPC cop0 register, and jumps there immediately. No |
|
|
* delay slot. |
|
|
* |
|
|
* TODO: This instruction is only available if the processor |
|
|
* is in debug mode. (What does that mean?) |
|
|
* TODO: This instruction is undefined in a delay slot. |
|
|
*/ |
|
|
|
|
|
cpu->pc = cpu->cd.mips.pc_last = cp->reg[COP0_DEPC]; |
|
|
cpu->cd.mips.delay_slot = 0; |
|
|
cp->reg[COP0_STATUS] &= ~STATUS_EXL; |
|
|
|
|
|
return; |
|
|
} |
|
|
|
|
1997 |
|
|
1998 |
/* Ugly R5900 hacks: */ |
/* Ugly R5900 hacks: */ |
1999 |
if ((function & 0xfffff) == 0x38) { /* ei */ |
if (cpu->cd.mips.cpu_type.rev == MIPS_R5900) { |
2000 |
if (unassemble_only) { |
if ((function & 0xfffff) == COP0_EI) { |
2001 |
debug("ei\n"); |
if (unassemble_only) { |
2002 |
|
debug("ei\n"); |
2003 |
|
return; |
2004 |
|
} |
2005 |
|
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] |= |
2006 |
|
R5900_STATUS_EIE; |
2007 |
return; |
return; |
2008 |
} |
} |
|
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] |= R5900_STATUS_EIE; |
|
|
return; |
|
|
} |
|
2009 |
|
|
2010 |
if ((function & 0xfffff) == 0x39) { /* di */ |
if ((function & 0xfffff) == COP0_DI) { |
2011 |
if (unassemble_only) { |
if (unassemble_only) { |
2012 |
debug("di\n"); |
debug("di\n"); |
2013 |
|
return; |
2014 |
|
} |
2015 |
|
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] &= |
2016 |
|
~R5900_STATUS_EIE; |
2017 |
return; |
return; |
2018 |
} |
} |
|
cpu->cd.mips.coproc[0]->reg[COP0_STATUS] &= ~R5900_STATUS_EIE; |
|
|
return; |
|
2019 |
} |
} |
2020 |
|
|
2021 |
co_bit = (function >> 25) & 1; |
co_bit = (function >> 25) & 1; |
2056 |
(long long)cp->reg[COP0_ENTRYLO0]); |
(long long)cp->reg[COP0_ENTRYLO0]); |
2057 |
debug(", lo1=%016llx\n", |
debug(", lo1=%016llx\n", |
2058 |
(long long)cp->reg[COP0_ENTRYLO1]); |
(long long)cp->reg[COP0_ENTRYLO1]); |
2059 |
|
return; |
2060 |
} |
} |
2061 |
coproc_tlbwri(cpu, op == COP0_TLBWR); |
coproc_tlbwri(cpu, op == COP0_TLBWR); |
2062 |
return; |
return; |
2083 |
} |
} |
2084 |
coproc_eret(cpu); |
coproc_eret(cpu); |
2085 |
return; |
return; |
2086 |
|
case COP0_DERET: |
2087 |
|
if (unassemble_only) { |
2088 |
|
debug("deret\n"); |
2089 |
|
return; |
2090 |
|
} |
2091 |
|
/* |
2092 |
|
* According to the MIPS64 manual, deret |
2093 |
|
* loads PC from the DEPC cop0 register, and |
2094 |
|
* jumps there immediately. No delay slot. |
2095 |
|
* |
2096 |
|
* TODO: This instruction is only available |
2097 |
|
* if the processor is in debug mode. (What |
2098 |
|
* does that mean?) TODO: This instruction |
2099 |
|
* is undefined in a delay slot. |
2100 |
|
*/ |
2101 |
|
cpu->pc = cp->reg[COP0_DEPC]; |
2102 |
|
cpu->delay_slot = 0; |
2103 |
|
cp->reg[COP0_STATUS] &= ~STATUS_EXL; |
2104 |
|
return; |
2105 |
case COP0_STANDBY: |
case COP0_STANDBY: |
2106 |
if (unassemble_only) { |
if (unassemble_only) { |
2107 |
debug("standby\n"); |
debug("standby\n"); |
2157 |
return; |
return; |
2158 |
} |
} |
2159 |
|
|
2160 |
fatal("cpu%i: UNIMPLEMENTED coproc%i function %08lx " |
fatal("cpu%i: UNIMPLEMENTED coproc%i function %08"PRIx32" " |
2161 |
"(pc = %016llx)\n", cpu->cpu_id, cp->coproc_nr, function, |
"(pc = %016"PRIx64")\n", cpu->cpu_id, cp->coproc_nr, |
2162 |
(long long)cpu->cd.mips.pc_last); |
(uint32_t)function, cpu->pc); |
2163 |
#if 1 |
|
|
single_step = 1; |
|
|
#else |
|
2164 |
mips_cpu_exception(cpu, EXCEPTION_CPU, 0, 0, cp->coproc_nr, 0, 0, 0); |
mips_cpu_exception(cpu, EXCEPTION_CPU, 0, 0, cp->coproc_nr, 0, 0, 0); |
|
#endif |
|
2165 |
} |
} |
2166 |
|
|
2167 |
#endif /* ENABLE_MIPS */ |
#endif /* ENABLE_MIPS */ |