filename | src/sh4/mmux86.c |
changeset | 1067:d3c00ffccfcd |
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author | nkeynes |
date | Mon Feb 13 20:00:27 2012 +1000 (12 years ago) |
permissions | -rw-r--r-- |
last change | Fix MMU on non-translated platforms - reintroduce old VMA translation functions (slightly modified) - modify shadow processing to work on post-translated memory ops |
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nkeynes@939 | 1 | /** |
nkeynes@940 | 2 | * $Id$ |
nkeynes@939 | 3 | * |
nkeynes@939 | 4 | * x86-specific MMU code - this emits simple TLB stubs for TLB indirection. |
nkeynes@939 | 5 | * |
nkeynes@939 | 6 | * Copyright (c) 2008 Nathan Keynes. |
nkeynes@939 | 7 | * |
nkeynes@939 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@939 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@939 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@939 | 11 | * (at your option) any later version. |
nkeynes@939 | 12 | * |
nkeynes@939 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@939 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@939 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@939 | 16 | * GNU General Public License for more details. |
nkeynes@939 | 17 | */ |
nkeynes@939 | 18 | |
nkeynes@939 | 19 | #include "lxdream.h" |
nkeynes@939 | 20 | #include "mem.h" |
nkeynes@939 | 21 | #include "sh4/sh4core.h" |
nkeynes@939 | 22 | #include "sh4/sh4mmio.h" |
nkeynes@939 | 23 | #include "sh4/sh4trans.h" |
nkeynes@939 | 24 | #include "sh4/mmu.h" |
nkeynes@991 | 25 | #include "xlat/x86/x86op.h" |
nkeynes@939 | 26 | |
nkeynes@939 | 27 | #if SIZEOF_VOID_P == 8 |
nkeynes@991 | 28 | #define XLAT(addr_space, reg) \ |
nkeynes@991 | 29 | MOVQ_imm64_r64( (uintptr_t)addr_space, REG_RAX ); \ |
nkeynes@991 | 30 | MOVP_sib_rptr( 3, reg, REG_RAX, 0, reg ); |
nkeynes@991 | 31 | #define ADDP_imms_ptr(imm,p) \ |
nkeynes@991 | 32 | MOVQ_imm64_r64((uintptr_t)p, REG_EAX ); \ |
nkeynes@991 | 33 | ADDL_imms_r32disp(imm, REG_EAX, 0); |
nkeynes@939 | 34 | #else |
nkeynes@991 | 35 | #define XLAT(addr_space, reg) \ |
nkeynes@991 | 36 | MOVP_sib_rptr( 2, reg, -1, (uintptr_t)addr_space, reg ); |
nkeynes@991 | 37 | #define ADDP_imms_ptr(imm,p) \ |
nkeynes@991 | 38 | ADDL_imms_r32disp(imm, -1, (uintptr_t)p); |
nkeynes@939 | 39 | #endif |
nkeynes@939 | 40 | |
nkeynes@939 | 41 | void mmu_utlb_init_vtable( struct utlb_entry *ent, struct utlb_page_entry *page, gboolean writable ) |
nkeynes@939 | 42 | { |
nkeynes@939 | 43 | uint32_t mask = ent->mask; |
nkeynes@942 | 44 | uint32_t vpn = ent->vpn & mask; |
nkeynes@939 | 45 | uint32_t ppn = ent->ppn & mask; |
nkeynes@972 | 46 | struct mem_region_fn **addr_space; |
nkeynes@972 | 47 | uint8_t **out = (uint8_t **)&page->fn; |
nkeynes@972 | 48 | uint8_t **fn; |
nkeynes@939 | 49 | int inc = writable ? 1 : 2; |
nkeynes@939 | 50 | int i; |
nkeynes@939 | 51 | |
nkeynes@939 | 52 | xlat_output = page->code; |
nkeynes@972 | 53 | if( (ppn & 0x1FFFFFFF) >= 0x1C000000 ) { |
nkeynes@972 | 54 | /* SH4 control region */ |
nkeynes@972 | 55 | ppn |= 0xE0000000; |
nkeynes@972 | 56 | addr_space = sh4_address_space; |
nkeynes@972 | 57 | } else { |
nkeynes@972 | 58 | addr_space = ext_address_space; |
nkeynes@972 | 59 | } |
nkeynes@972 | 60 | fn = (uint8_t **)addr_space[ppn>>12]; |
nkeynes@939 | 61 | |
nkeynes@975 | 62 | for( i=0; i<10; i+= inc, fn += inc, out += inc ) { |
nkeynes@939 | 63 | *out = xlat_output; |
nkeynes@975 | 64 | if( i != 9 ) { /* read_byte_for_write doesn't increment mmu_urc, everything else does */ |
nkeynes@991 | 65 | ADDP_imms_ptr(1, &mmu_urc); |
nkeynes@975 | 66 | } |
nkeynes@995 | 67 | ADDL_imms_r32( ppn-vpn, REG_ARG1 ); // 6 |
nkeynes@939 | 68 | if( ent->mask >= 0xFFFFF000 ) { |
nkeynes@939 | 69 | // Maps to a single page, so jump directly there |
nkeynes@939 | 70 | int rel = (*fn - xlat_output); |
nkeynes@991 | 71 | JMP_prerel( rel ); // 5 |
nkeynes@939 | 72 | } else { |
nkeynes@995 | 73 | MOVL_r32_r32( REG_ARG1, REG_ECX ); // 2 |
nkeynes@991 | 74 | SHRL_imm_r32( 12, REG_ECX ); // 3 |
nkeynes@991 | 75 | XLAT(addr_space, REG_ECX); // 14 |
nkeynes@991 | 76 | JMP_r32disp(REG_ECX, (((uintptr_t)out) - ((uintptr_t)&page->fn)) ); // 3 |
nkeynes@939 | 77 | } |
nkeynes@939 | 78 | } |
nkeynes@946 | 79 | |
nkeynes@946 | 80 | page->fn.prefetch = unmapped_prefetch; // FIXME |
nkeynes@946 | 81 | } |
nkeynes@946 | 82 | |
nkeynes@946 | 83 | void mmu_utlb_init_storequeue_vtable( struct utlb_entry *ent, struct utlb_page_entry *page ) |
nkeynes@946 | 84 | { |
nkeynes@946 | 85 | uint32_t mask = ent->mask; |
nkeynes@946 | 86 | uint32_t vpn = ent->vpn & mask; |
nkeynes@946 | 87 | uint32_t ppn = ent->ppn & mask; |
nkeynes@946 | 88 | |
nkeynes@946 | 89 | xlat_output = page->code; |
nkeynes@946 | 90 | |
nkeynes@946 | 91 | memcpy( page, &p4_region_storequeue, sizeof(struct mem_region_fn) ); |
nkeynes@946 | 92 | |
nkeynes@946 | 93 | page->fn.prefetch = (mem_prefetch_fn_t)xlat_output; |
nkeynes@991 | 94 | ADDP_imms_ptr(1, &mmu_urc); |
nkeynes@995 | 95 | ADDL_imms_r32( ppn-vpn, REG_ARG1 ); |
nkeynes@946 | 96 | int rel = ((uint8_t *)ccn_storequeue_prefetch_tlb) - xlat_output; |
nkeynes@991 | 97 | JMP_prerel( rel ); |
nkeynes@939 | 98 | } |
nkeynes@939 | 99 | |
nkeynes@939 | 100 | void mmu_utlb_1k_init_vtable( struct utlb_1k_entry *entry ) |
nkeynes@939 | 101 | { |
nkeynes@939 | 102 | xlat_output = entry->code; |
nkeynes@939 | 103 | int i; |
nkeynes@939 | 104 | uint8_t **out = (uint8_t **)&entry->fn; |
nkeynes@939 | 105 | |
nkeynes@946 | 106 | for( i=0; i<9; i++, out++ ) { |
nkeynes@939 | 107 | *out = xlat_output; |
nkeynes@995 | 108 | MOVL_r32_r32( REG_ARG1, REG_ECX ); |
nkeynes@991 | 109 | SHRL_imm_r32( 10, REG_ECX ); |
nkeynes@991 | 110 | ANDL_imms_r32( 0x3, REG_ECX ); |
nkeynes@991 | 111 | XLAT( (uintptr_t)&entry->subpages[0], REG_ECX ); |
nkeynes@991 | 112 | JMP_r32disp(REG_ECX, (((uintptr_t)out) - ((uintptr_t)&entry->fn)) ); // 3 |
nkeynes@939 | 113 | } |
nkeynes@939 | 114 | |
nkeynes@939 | 115 | out = (uint8_t **)&entry->user_fn; |
nkeynes@946 | 116 | for( i=0; i<9; i++, out++ ) { |
nkeynes@939 | 117 | *out = xlat_output; |
nkeynes@995 | 118 | MOVL_r32_r32( REG_ARG1, REG_ECX ); |
nkeynes@991 | 119 | SHRL_imm_r32( 10, REG_ECX ); |
nkeynes@991 | 120 | ANDL_imms_r32( 0x3, REG_ECX ); |
nkeynes@991 | 121 | XLAT( (uintptr_t)&entry->user_subpages[0], REG_ECX ); |
nkeynes@991 | 122 | JMP_r32disp(REG_ECX, (((uintptr_t)out) - ((uintptr_t)&entry->user_fn)) ); // 3 |
nkeynes@939 | 123 | } |
nkeynes@939 | 124 | |
nkeynes@939 | 125 | } |
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