kqemu.h

   1 /*
   2  * KQEMU header
   3  *
   4  * Copyright (c) 2004-2006 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #ifndef KQEMU_H
  25 #define KQEMU_H
  26
  27 #define KQEMU_VERSION 0x010300
  28
  29 struct kqemu_segment_cache {
  30     uint32_t selector;
  31     unsigned long base;
  32     uint32_t limit;
  33     uint32_t flags;
  34 };
  35
  36 struct kqemu_cpu_state {
  37 #ifdef __x86_64__
  38     unsigned long regs[16];
  39 #else
  40     unsigned long regs[8];
  41 #endif
  42     unsigned long eip;
  43     unsigned long eflags;
  44
  45     uint32_t dummy0, dummy1, dumm2, dummy3, dummy4;
  46
  47     struct kqemu_segment_cache segs[6]; /* selector values */
  48     struct kqemu_segment_cache ldt;
  49     struct kqemu_segment_cache tr;
  50     struct kqemu_segment_cache gdt; /* only base and limit are used */
  51     struct kqemu_segment_cache idt; /* only base and limit are used */
  52
  53     unsigned long cr0;
  54     unsigned long dummy5;
  55     unsigned long cr2;
  56     unsigned long cr3;
  57     unsigned long cr4;
  58     uint32_t a20_mask;
  59
  60     /* sysenter registers */
  61     uint32_t sysenter_cs;
  62     uint32_t sysenter_esp;
  63     uint32_t sysenter_eip;
  64     uint64_t efer __attribute__((aligned(8)));
  65     uint64_t star;
  66 #ifdef __x86_64__
  67     unsigned long lstar;
  68     unsigned long cstar;
  69     unsigned long fmask;
  70     unsigned long kernelgsbase;
  71 #endif
  72     uint64_t tsc_offset;
  73
  74     unsigned long dr0;
  75     unsigned long dr1;
  76     unsigned long dr2;
  77     unsigned long dr3;
  78     unsigned long dr6;
  79     unsigned long dr7;
  80
  81     uint8_t cpl;
  82     uint8_t user_only;
  83
  84     uint32_t error_code; /* error_code when exiting with an exception */
  85     unsigned long next_eip; /* next eip value when exiting with an interrupt */
  86     unsigned int nb_pages_to_flush; /* number of pages to flush,
  87                                        KQEMU_FLUSH_ALL means full flush */
  88 #define KQEMU_MAX_PAGES_TO_FLUSH 512
  89 #define KQEMU_FLUSH_ALL (KQEMU_MAX_PAGES_TO_FLUSH + 1)
  90
  91     long retval;
  92
  93     /* number of ram_dirty entries to update */
  94     unsigned int nb_ram_pages_to_update;
  95 #define KQEMU_MAX_RAM_PAGES_TO_UPDATE 512
  96 #define KQEMU_RAM_PAGES_UPDATE_ALL (KQEMU_MAX_RAM_PAGES_TO_UPDATE + 1)
  97
  98 #define KQEMU_MAX_MODIFIED_RAM_PAGES 512
  99     unsigned int nb_modified_ram_pages;
 100 };
 101
 102 struct kqemu_init {
 103     uint8_t *ram_base; /* must be page aligned */
 104     unsigned long ram_size; /* must be multiple of 4 KB */
 105     uint8_t *ram_dirty; /* must be page aligned */
 106     uint32_t **phys_to_ram_map; /* must be page aligned */
 107     unsigned long *pages_to_flush; /* must be page aligned */
 108     unsigned long *ram_pages_to_update; /* must be page aligned */
 109     unsigned long *modified_ram_pages; /* must be page aligned */
 110 };
 111
 112 #define KQEMU_RET_ABORT    (-1)
 113 #define KQEMU_RET_EXCEPTION 0x0000 /* 8 low order bit are the exception */
 114 #define KQEMU_RET_INT       0x0100 /* 8 low order bit are the interrupt */
 115 #define KQEMU_RET_SOFTMMU   0x0200 /* emulation needed (I/O or
 116                                       unsupported INSN) */
 117 #define KQEMU_RET_INTR      0x0201 /* interrupted by a signal */
 118 #define KQEMU_RET_SYSCALL   0x0300 /* syscall insn */
 119
 120 #ifdef _WIN32
 121 #define KQEMU_EXEC             CTL_CODE(FILE_DEVICE_UNKNOWN, 1, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
 122 #define KQEMU_INIT             CTL_CODE(FILE_DEVICE_UNKNOWN, 2, METHOD_BUFFERED, FILE_WRITE_ACCESS)
 123 #define KQEMU_GET_VERSION      CTL_CODE(FILE_DEVICE_UNKNOWN, 3, METHOD_BUFFERED, FILE_READ_ACCESS)
 124 #define KQEMU_MODIFY_RAM_PAGES CTL_CODE(FILE_DEVICE_UNKNOWN, 4, METHOD_BUFFERED, FILE_WRITE_ACCESS)
 125 #else
 126 #define KQEMU_EXEC             _IOWR('q', 1, struct kqemu_cpu_state)
 127 #define KQEMU_INIT             _IOW('q', 2, struct kqemu_init)
 128 #define KQEMU_GET_VERSION      _IOR('q', 3, int)
 129 #define KQEMU_MODIFY_RAM_PAGES _IOW('q', 4, int)
 130 #endif
 131
 132 #endif /* KQEMU_H */