Corey Tabaka | 8469724 | 2009-03-26 02:32:01 -0400 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2009 Corey Tabaka |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining |
| 5 | * a copy of this software and associated documentation files |
| 6 | * (the "Software"), to deal in the Software without restriction, |
| 7 | * including without limitation the rights to use, copy, modify, merge, |
| 8 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 9 | * and to permit persons to whom the Software is furnished to do so, |
| 10 | * subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | */ |
| 23 | #ifndef __ARCH_X86_H |
| 24 | #define __ARCH_X86_H |
| 25 | |
| 26 | #include <compiler.h> |
| 27 | #include <sys/types.h> |
| 28 | |
| 29 | #if defined(__cplusplus) |
| 30 | extern "C" { |
| 31 | #endif |
| 32 | |
| 33 | void x86_mmu_init(void); |
| 34 | |
| 35 | struct x86_iframe { |
| 36 | uint32_t pivot; // stack switch pivot |
| 37 | uint32_t edi, esi, ebp, esp, ebx, edx, ecx, eax; // pushed by common handler using pusha |
| 38 | uint32_t ds, es, fs, gs; // pushed by common handler |
| 39 | uint32_t vector; // pushed by stub |
| 40 | uint32_t err_code; // pushed by interrupt or stub |
| 41 | uint32_t eip, cs, eflags; // pushed by interrupt |
| 42 | uint32_t user_esp, user_ss; // pushed by interrupt if priv change occurs |
| 43 | }; |
| 44 | |
| 45 | /* |
| 46 | * x86 TSS structure |
| 47 | */ |
| 48 | typedef struct { |
| 49 | uint16_t backlink, __blh; |
| 50 | uint32_t esp0; |
| 51 | uint16_t ss0, __ss0h; |
| 52 | uint32_t esp1; |
| 53 | uint16_t ss1, __ss1h; |
| 54 | uint32_t esp2; |
| 55 | uint16_t ss2, __ss2h; |
| 56 | uint32_t cr3; |
| 57 | uint32_t eip; |
| 58 | uint32_t eflags; |
| 59 | uint32_t eax, ecx, edx, ebx; |
| 60 | uint32_t esp, ebp, esi, edi; |
| 61 | uint16_t es, __esh; |
| 62 | uint16_t cs, __csh; |
| 63 | uint16_t ss, __ssh; |
| 64 | uint16_t ds, __dsh; |
| 65 | uint16_t fs, __fsh; |
| 66 | uint16_t gs, __gsh; |
| 67 | uint16_t ldt, __ldth; |
| 68 | uint16_t trace, bitmap; |
| 69 | |
| 70 | uint8_t tss_bitmap[8192]; |
| 71 | } __PACKED tss_t; |
| 72 | |
| 73 | #define X86_CR0_PE 0x00000001 /* protected mode enable */ |
| 74 | #define X86_CR0_MP 0x00000002 /* monitor coprocessor */ |
| 75 | #define X86_CR0_EM 0x00000004 /* emulation */ |
| 76 | #define X86_CR0_TS 0x00000008 /* task switched */ |
| 77 | #define X86_CR0_WP 0x00010000 /* supervisor write protect */ |
| 78 | #define X86_CR0_NW 0x20000000 /* not write-through */ |
| 79 | #define X86_CR0_CD 0x40000000 /* cache disable */ |
| 80 | #define X86_CR0_PG 0x80000000 /* enable paging */ |
| 81 | |
| 82 | static inline void set_in_cr0(uint32_t mask) { |
| 83 | __asm__ __volatile__ ( |
| 84 | "movl %%cr0,%%eax \n\t" |
| 85 | "orl %0,%%eax \n\t" |
| 86 | "movl %%eax,%%cr0 \n\t" |
| 87 | : : "irg" (mask) |
| 88 | :"ax"); |
| 89 | } |
| 90 | |
| 91 | static inline void clear_in_cr0(uint32_t mask) { |
| 92 | __asm__ __volatile__ ( |
| 93 | "movl %%cr0, %%eax \n\t" |
| 94 | "andl %0, %%eax \n\t" |
| 95 | "movl %%eax, %%cr0 \n\t" |
| 96 | : : "irg" (~mask) |
| 97 | : "ax"); |
| 98 | } |
| 99 | |
| 100 | static inline void x86_clts(void) {__asm__ __volatile__ ("clts"); } |
| 101 | static inline void x86_hlt(void) {__asm__ __volatile__ ("hlt"); } |
| 102 | static inline void x86_sti(void) {__asm__ __volatile__ ("sti"); } |
| 103 | static inline void x86_cli(void) {__asm__ __volatile__ ("cli"); } |
| 104 | static inline void x86_ltr(uint16_t sel) { |
| 105 | __asm__ __volatile__ ("ltr %%ax" :: "a" (sel)); |
| 106 | } |
| 107 | |
| 108 | static inline uint32_t x86_get_cr2(void) { |
| 109 | uint32_t rv; |
| 110 | |
| 111 | __asm__ __volatile__ ( |
| 112 | "movl %%cr2, %0" |
| 113 | : "=r" (rv) |
| 114 | ); |
| 115 | |
| 116 | return rv; |
| 117 | } |
| 118 | |
| 119 | #define rdtsc(low,high) \ |
| 120 | __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)) |
| 121 | |
| 122 | #define rdtscl(low) \ |
| 123 | __asm__ __volatile__("rdtsc" : "=a" (low) : : "edx") |
| 124 | |
| 125 | #define rdtscll(val) \ |
| 126 | __asm__ __volatile__("rdtsc" : "=A" (val)) |
| 127 | |
| 128 | static inline uint8_t inp(uint16_t _port) { |
| 129 | uint8_t rv; |
| 130 | __asm__ __volatile__ ("inb %1, %0" |
| 131 | : "=a" (rv) |
| 132 | : "d" (_port)); |
| 133 | return(rv); |
| 134 | } |
| 135 | |
| 136 | static inline uint16_t inpw (uint16_t _port) { |
| 137 | uint16_t rv; |
| 138 | __asm__ __volatile__ ("inw %1, %0" |
| 139 | : "=a" (rv) |
| 140 | : "d" (_port)); |
| 141 | return(rv); |
| 142 | } |
| 143 | |
| 144 | static inline uint32_t inpd(uint16_t _port) { |
| 145 | uint32_t rv; |
| 146 | __asm__ __volatile__ ("inl %1, %0" |
| 147 | : "=a" (rv) |
| 148 | : "d" (_port)); |
| 149 | return(rv); |
| 150 | } |
| 151 | |
| 152 | static inline void outp(uint16_t _port, uint8_t _data) { |
| 153 | __asm__ __volatile__ ("outb %1, %0" |
| 154 | : |
| 155 | : "d" (_port), |
| 156 | "a" (_data)); |
| 157 | } |
| 158 | |
| 159 | static inline void outpw(uint16_t _port, uint16_t _data) { |
| 160 | __asm__ __volatile__ ("outw %1, %0" |
| 161 | : |
| 162 | : "d" (_port), |
| 163 | "a" (_data)); |
| 164 | } |
| 165 | |
| 166 | static inline void outpd(uint16_t _port, uint32_t _data) { |
| 167 | __asm__ __volatile__ ("outl %1, %0" |
| 168 | : |
| 169 | : "d" (_port), |
| 170 | "a" (_data)); |
| 171 | } |
| 172 | |
| 173 | static inline void inprep(uint16_t _port, uint8_t *_buffer, uint32_t _reads) { |
| 174 | __asm__ __volatile__ ("pushal \n\t" |
| 175 | "pushfl \n\t" |
| 176 | "cli \n\t" |
| 177 | "cld \n\t" |
| 178 | "rep insb \n\t" |
| 179 | "popfl \n\t" |
| 180 | "popal" |
| 181 | : |
| 182 | : "d" (_port), |
| 183 | "D" (_buffer), |
| 184 | "c" (_reads)); |
| 185 | } |
| 186 | |
| 187 | static inline void outprep(uint16_t _port, uint8_t *_buffer, uint32_t _writes) { |
| 188 | __asm__ __volatile__ ("pushal \n\t" |
| 189 | "pushfl \n\t" |
| 190 | "cli \n\t" |
| 191 | "cld \n\t" |
| 192 | "rep outsb \n\t" |
| 193 | "popfl \n\t" |
| 194 | "popal" |
| 195 | : |
| 196 | : "d" (_port), |
| 197 | "S" (_buffer), |
| 198 | "c" (_writes)); |
| 199 | } |
| 200 | |
| 201 | static inline void inpwrep(uint16_t _port, uint16_t *_buffer, uint32_t _reads) { |
| 202 | __asm__ __volatile__ ("pushal \n\t" |
| 203 | "pushfl \n\t" |
| 204 | "cli \n\t" |
| 205 | "cld \n\t" |
| 206 | "rep insw \n\t" |
| 207 | "popfl \n\t" |
| 208 | "popal" |
| 209 | : |
| 210 | : "d" (_port), |
| 211 | "D" (_buffer), |
| 212 | "c" (_reads)); |
| 213 | } |
| 214 | |
| 215 | static inline void outpwrep(uint16_t _port, uint16_t *_buffer, |
| 216 | uint32_t _writes) { |
| 217 | __asm__ __volatile__ ("pushal \n\t" |
| 218 | "pushfl \n\t" |
| 219 | "cli \n\t" |
| 220 | "cld \n\t" |
| 221 | "rep outsw \n\t" |
| 222 | "popfl \n\t" |
| 223 | "popal" |
| 224 | : |
| 225 | : "d" (_port), |
| 226 | "S" (_buffer), |
| 227 | "c" (_writes)); |
| 228 | } |
| 229 | |
| 230 | static inline void inpdrep(uint16_t _port, uint32_t *_buffer, |
| 231 | uint32_t _reads) { |
| 232 | __asm__ __volatile__ ("pushal \n\t" |
| 233 | "pushfl \n\t" |
| 234 | "cli \n\t" |
| 235 | "cld \n\t" |
| 236 | "rep insl \n\t" |
| 237 | "popfl \n\t" |
| 238 | "popal" |
| 239 | : |
| 240 | : "d" (_port), |
| 241 | "D" (_buffer), |
| 242 | "c" (_reads)); |
| 243 | } |
| 244 | |
| 245 | static inline void outpdrep(uint16_t _port, uint32_t *_buffer, |
| 246 | uint32_t _writes) { |
| 247 | __asm__ __volatile__ ("pushal \n\t" |
| 248 | "pushfl \n\t" |
| 249 | "cli \n\t" |
| 250 | "cld \n\t" |
| 251 | "rep outsl \n\t" |
| 252 | "popfl \n\t" |
| 253 | "popal" |
| 254 | : |
| 255 | : "d" (_port), |
| 256 | "S" (_buffer), |
| 257 | "c" (_writes)); |
| 258 | } |
| 259 | |
| 260 | #if defined(__cplusplus) |
| 261 | } |
| 262 | #endif |
| 263 | |
| 264 | #endif |