| Boris Ostrovsky | cee2cfb | 2017-02-03 16:57:22 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 3 | * of this software and associated documentation files (the "Software"), to |
| 4 | * deal in the Software without restriction, including without limitation the |
| 5 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 6 | * sell copies of the Software, and to permit persons to whom the Software is |
| 7 | * furnished to do so, subject to the following conditions: |
| 8 | * |
| 9 | * The above copyright notice and this permission notice shall be included in |
| 10 | * all copies or substantial portions of the Software. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 13 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 15 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 16 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 17 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 18 | * DEALINGS IN THE SOFTWARE. |
| 19 | * |
| 20 | * Copyright (c) 2015, Roger Pau Monne <roger.pau@citrix.com> |
| 21 | */ |
| 22 | |
| 23 | #ifndef __XEN_PUBLIC_HVM_HVM_VCPU_H__ |
| 24 | #define __XEN_PUBLIC_HVM_HVM_VCPU_H__ |
| 25 | |
| 26 | #include "../xen.h" |
| 27 | |
| 28 | struct vcpu_hvm_x86_32 { |
| 29 | uint32_t eax; |
| 30 | uint32_t ecx; |
| 31 | uint32_t edx; |
| 32 | uint32_t ebx; |
| 33 | uint32_t esp; |
| 34 | uint32_t ebp; |
| 35 | uint32_t esi; |
| 36 | uint32_t edi; |
| 37 | uint32_t eip; |
| 38 | uint32_t eflags; |
| 39 | |
| 40 | uint32_t cr0; |
| 41 | uint32_t cr3; |
| 42 | uint32_t cr4; |
| 43 | |
| 44 | uint32_t pad1; |
| 45 | |
| 46 | /* |
| 47 | * EFER should only be used to set the NXE bit (if required) |
| 48 | * when starting a vCPU in 32bit mode with paging enabled or |
| 49 | * to set the LME/LMA bits in order to start the vCPU in |
| 50 | * compatibility mode. |
| 51 | */ |
| 52 | uint64_t efer; |
| 53 | |
| 54 | uint32_t cs_base; |
| 55 | uint32_t ds_base; |
| 56 | uint32_t ss_base; |
| 57 | uint32_t es_base; |
| 58 | uint32_t tr_base; |
| 59 | uint32_t cs_limit; |
| 60 | uint32_t ds_limit; |
| 61 | uint32_t ss_limit; |
| 62 | uint32_t es_limit; |
| 63 | uint32_t tr_limit; |
| 64 | uint16_t cs_ar; |
| 65 | uint16_t ds_ar; |
| 66 | uint16_t ss_ar; |
| 67 | uint16_t es_ar; |
| 68 | uint16_t tr_ar; |
| 69 | |
| 70 | uint16_t pad2[3]; |
| 71 | }; |
| 72 | |
| 73 | /* |
| 74 | * The layout of the _ar fields of the segment registers is the |
| 75 | * following: |
| 76 | * |
| 77 | * Bits [0,3]: type (bits 40-43). |
| 78 | * Bit 4: s (descriptor type, bit 44). |
| 79 | * Bit [5,6]: dpl (descriptor privilege level, bits 45-46). |
| 80 | * Bit 7: p (segment-present, bit 47). |
| 81 | * Bit 8: avl (available for system software, bit 52). |
| 82 | * Bit 9: l (64-bit code segment, bit 53). |
| 83 | * Bit 10: db (meaning depends on the segment, bit 54). |
| 84 | * Bit 11: g (granularity, bit 55) |
| 85 | * Bits [12,15]: unused, must be blank. |
| 86 | * |
| 87 | * A more complete description of the meaning of this fields can be |
| 88 | * obtained from the Intel SDM, Volume 3, section 3.4.5. |
| 89 | */ |
| 90 | |
| 91 | struct vcpu_hvm_x86_64 { |
| 92 | uint64_t rax; |
| 93 | uint64_t rcx; |
| 94 | uint64_t rdx; |
| 95 | uint64_t rbx; |
| 96 | uint64_t rsp; |
| 97 | uint64_t rbp; |
| 98 | uint64_t rsi; |
| 99 | uint64_t rdi; |
| 100 | uint64_t rip; |
| 101 | uint64_t rflags; |
| 102 | |
| 103 | uint64_t cr0; |
| 104 | uint64_t cr3; |
| 105 | uint64_t cr4; |
| 106 | uint64_t efer; |
| 107 | |
| 108 | /* |
| 109 | * Using VCPU_HVM_MODE_64B implies that the vCPU is launched |
| 110 | * directly in long mode, so the cached parts of the segment |
| 111 | * registers get set to match that environment. |
| 112 | * |
| 113 | * If the user wants to launch the vCPU in compatibility mode |
| 114 | * the 32-bit structure should be used instead. |
| 115 | */ |
| 116 | }; |
| 117 | |
| 118 | struct vcpu_hvm_context { |
| 119 | #define VCPU_HVM_MODE_32B 0 /* 32bit fields of the structure will be used. */ |
| 120 | #define VCPU_HVM_MODE_64B 1 /* 64bit fields of the structure will be used. */ |
| 121 | uint32_t mode; |
| 122 | |
| 123 | uint32_t pad; |
| 124 | |
| 125 | /* CPU registers. */ |
| 126 | union { |
| 127 | struct vcpu_hvm_x86_32 x86_32; |
| 128 | struct vcpu_hvm_x86_64 x86_64; |
| 129 | } cpu_regs; |
| 130 | }; |
| 131 | typedef struct vcpu_hvm_context vcpu_hvm_context_t; |
| 132 | |
| 133 | #endif /* __XEN_PUBLIC_HVM_HVM_VCPU_H__ */ |
| 134 | |
| 135 | /* |
| 136 | * Local variables: |
| 137 | * mode: C |
| 138 | * c-file-style: "BSD" |
| 139 | * c-basic-offset: 4 |
| 140 | * tab-width: 4 |
| 141 | * indent-tabs-mode: nil |
| 142 | * End: |
| 143 | */ |
