| 1 | ; $Id: cidet-appA.asm 53548 2014-12-16 17:55:40Z vboxsync $
|
|---|
| 2 | ;; @file
|
|---|
| 3 | ; CPU Instruction Decoding & Execution Tests - Ring-3 Driver Application, Assembly Code.
|
|---|
| 4 | ;
|
|---|
| 5 |
|
|---|
| 6 | ;
|
|---|
| 7 | ; Copyright (C) 2009-2014 Oracle Corporation
|
|---|
| 8 | ;
|
|---|
| 9 | ; This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | ; available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | ; you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | ; General Public License (GPL) as published by the Free Software
|
|---|
| 13 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | ;
|
|---|
| 17 | ; The contents of this file may alternatively be used under the terms
|
|---|
| 18 | ; of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | ; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | ; VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | ; CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | ;
|
|---|
| 23 | ; You may elect to license modified versions of this file under the
|
|---|
| 24 | ; terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | ;
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | ;*******************************************************************************
|
|---|
| 29 | ;* Header Files *
|
|---|
| 30 | ;*******************************************************************************
|
|---|
| 31 | %include "iprt/asmdefs.mac"
|
|---|
| 32 | %include "iprt/x86.mac"
|
|---|
| 33 | %include "cidet.mac"
|
|---|
| 34 |
|
|---|
| 35 |
|
|---|
| 36 | ;*******************************************************************************
|
|---|
| 37 | ;* Global Variables *
|
|---|
| 38 | ;*******************************************************************************
|
|---|
| 39 | %ifdef RT_ARCH_X86
|
|---|
| 40 | ;; Used by CidetAppSaveAndRestoreCtx when we have a tricky target stack.
|
|---|
| 41 | g_uTargetEip dd 0
|
|---|
| 42 | g_uTargetCs dw 0
|
|---|
| 43 | %endif
|
|---|
| 44 |
|
|---|
| 45 |
|
|---|
| 46 | ;;
|
|---|
| 47 | ; ASSUMES that it's called and the EIP/RIP is found on the stack.
|
|---|
| 48 | ;
|
|---|
| 49 | ; @param pSaveCtx ds:xCX The context to save; DS, xDX and xCX have
|
|---|
| 50 | ; already been saved by the caller.
|
|---|
| 51 | ; @param pRestoreCtx ds:xDX The context to restore.
|
|---|
| 52 | ;
|
|---|
| 53 | BEGINPROC CidetAppSaveAndRestoreCtx
|
|---|
| 54 | ;
|
|---|
| 55 | ; Save the stack pointer and program counter first so we can later
|
|---|
| 56 | ; bypass this step if we need to.
|
|---|
| 57 | ;
|
|---|
| 58 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xAX * 8], xAX ; need scratch register.
|
|---|
| 59 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xSP * 8], xSP
|
|---|
| 60 | mov word [xCX + CIDETCPUCTX.aSRegs + X86_SREG_SS * 2], ss
|
|---|
| 61 | mov word [xCX + CIDETCPUCTX.aSRegs + X86_SREG_CS * 2], cs
|
|---|
| 62 | mov xAX, [xSP]
|
|---|
| 63 | mov [xCX + CIDETCPUCTX.rip], xAX
|
|---|
| 64 | jmp CidetAppSaveAndRestoreCtx_1
|
|---|
| 65 |
|
|---|
| 66 | GLOBALNAME CidetAppSaveAndRestoreCtx_NoSsSpCsIp
|
|---|
| 67 | mov [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xAX * 8], xAX
|
|---|
| 68 | CidetAppSaveAndRestoreCtx_1:
|
|---|
| 69 |
|
|---|
| 70 | ; Flags.
|
|---|
| 71 | %ifdef RT_ARCH_AMD64
|
|---|
| 72 | pushfq
|
|---|
| 73 | %else
|
|---|
| 74 | pushfd
|
|---|
| 75 | %endif
|
|---|
| 76 | pop xAX
|
|---|
| 77 | mov [xCX + CIDETCPUCTX.rfl], xAX
|
|---|
| 78 |
|
|---|
| 79 | ; Segment registers.
|
|---|
| 80 | mov word [xCX + CIDETCPUCTX.aSRegs + X86_SREG_ES * 2], es
|
|---|
| 81 | mov word [xCX + CIDETCPUCTX.aSRegs + X86_SREG_FS * 2], fs
|
|---|
| 82 | mov word [xCX + CIDETCPUCTX.aSRegs + X86_SREG_GS * 2], gs
|
|---|
| 83 |
|
|---|
| 84 | ; Remaining GPRs.
|
|---|
| 85 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xBX * 8], xBX
|
|---|
| 86 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xBP * 8], xBP
|
|---|
| 87 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xSI * 8], xSI
|
|---|
| 88 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xDI * 8], xDI
|
|---|
| 89 | %ifdef RT_ARCH_AMD64
|
|---|
| 90 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x8 * 8], r8
|
|---|
| 91 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x9 * 8], r9
|
|---|
| 92 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x10 * 8], r10
|
|---|
| 93 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x11 * 8], r11
|
|---|
| 94 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x12 * 8], r12
|
|---|
| 95 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x13 * 8], r13
|
|---|
| 96 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x14 * 8], r14
|
|---|
| 97 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x15 * 8], r15
|
|---|
| 98 | xor eax, eax
|
|---|
| 99 | mov [xCX + CIDETCPUCTX.cr0], rax
|
|---|
| 100 | mov [xCX + CIDETCPUCTX.cr2], rax
|
|---|
| 101 | mov [xCX + CIDETCPUCTX.cr3], rax
|
|---|
| 102 | mov [xCX + CIDETCPUCTX.cr4], rax
|
|---|
| 103 | mov [xCX + CIDETCPUCTX.cr8], rax
|
|---|
| 104 | %else
|
|---|
| 105 | xor eax, eax
|
|---|
| 106 | mov [xCX + CIDETCPUCTX.rfl + 4], eax
|
|---|
| 107 | mov [xCX + CIDETCPUCTX.rip + 4], eax
|
|---|
| 108 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xAX * 8 + 4], eax
|
|---|
| 109 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xCX * 8 + 4], eax
|
|---|
| 110 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xDX * 8 + 4], eax
|
|---|
| 111 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xBX * 8 + 4], eax
|
|---|
| 112 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xSP * 8 + 4], eax
|
|---|
| 113 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xBP * 8 + 4], eax
|
|---|
| 114 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xSI * 8 + 4], eax
|
|---|
| 115 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xDI * 8 + 4], eax
|
|---|
| 116 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x8 * 8 ], eax
|
|---|
| 117 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x8 * 8 + 4], eax
|
|---|
| 118 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x9 * 8 ], eax
|
|---|
| 119 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x9 * 8 + 4], eax
|
|---|
| 120 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x10 * 8 ], eax
|
|---|
| 121 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x10 * 8 + 4], eax
|
|---|
| 122 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x11 * 8 ], eax
|
|---|
| 123 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x11 * 8 + 4], eax
|
|---|
| 124 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x12 * 8 ], eax
|
|---|
| 125 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x12 * 8 + 4], eax
|
|---|
| 126 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x13 * 8 ], eax
|
|---|
| 127 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x13 * 8 + 4], eax
|
|---|
| 128 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x14 * 8 ], eax
|
|---|
| 129 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x14 * 8 + 4], eax
|
|---|
| 130 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x15 * 8 ], eax
|
|---|
| 131 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_x15 * 8 + 4], eax
|
|---|
| 132 | mov [xCX + CIDETCPUCTX.cr0 ], eax
|
|---|
| 133 | mov [xCX + CIDETCPUCTX.cr0 + 4], eax
|
|---|
| 134 | mov [xCX + CIDETCPUCTX.cr2 ], eax
|
|---|
| 135 | mov [xCX + CIDETCPUCTX.cr2 + 4], eax
|
|---|
| 136 | mov [xCX + CIDETCPUCTX.cr3 ], eax
|
|---|
| 137 | mov [xCX + CIDETCPUCTX.cr3 + 4], eax
|
|---|
| 138 | mov [xCX + CIDETCPUCTX.cr4 ], eax
|
|---|
| 139 | mov [xCX + CIDETCPUCTX.cr4 + 4], eax
|
|---|
| 140 | mov [xCX + CIDETCPUCTX.cr8 ], eax
|
|---|
| 141 | mov [xCX + CIDETCPUCTX.cr8 + 4], eax
|
|---|
| 142 | %endif
|
|---|
| 143 | mov [xCX + CIDETCPUCTX.tr], ax
|
|---|
| 144 | mov [xCX + CIDETCPUCTX.ldtr], ax
|
|---|
| 145 |
|
|---|
| 146 | ;
|
|---|
| 147 | ; Restore the other state.
|
|---|
| 148 | ;
|
|---|
| 149 | NAME(CidetAppSaveAndRestoreCtx_Restore):
|
|---|
| 150 |
|
|---|
| 151 | ; Restore ES, FS, and GS.
|
|---|
| 152 | mov es, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_ES * 2]
|
|---|
| 153 | mov fs, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_FS * 2]
|
|---|
| 154 | mov gs, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_GS * 2]
|
|---|
| 155 |
|
|---|
| 156 | ; Restore most GPRs (except xCX, xAX and xSP).
|
|---|
| 157 | mov xCX, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xCX * 8]
|
|---|
| 158 | mov xBX, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xBX * 8]
|
|---|
| 159 | mov xBP, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xBP * 8]
|
|---|
| 160 | mov xSI, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xSI * 8]
|
|---|
| 161 | mov xDI, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xDI * 8]
|
|---|
| 162 | %ifdef RT_ARCH_AMD64
|
|---|
| 163 | mov r8, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_x8 * 8]
|
|---|
| 164 | mov r9, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_x9 * 8]
|
|---|
| 165 | mov r10, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_x10 * 8]
|
|---|
| 166 | mov r11, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_x11 * 8]
|
|---|
| 167 | mov r12, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_x12 * 8]
|
|---|
| 168 | mov r13, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_x13 * 8]
|
|---|
| 169 | mov r14, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_x14 * 8]
|
|---|
| 170 | mov r15, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_x15 * 8]
|
|---|
| 171 | %endif
|
|---|
| 172 |
|
|---|
| 173 | %ifdef RT_ARCH_AMD64
|
|---|
| 174 | ; Create an iret frame which restores SS:RSP, RFLAGS, and CS:RIP.
|
|---|
| 175 | movzx eax, word [xDX + CIDETCPUCTX.aSRegs + X86_SREG_SS * 2]
|
|---|
| 176 | push xAX
|
|---|
| 177 | push qword [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xSP * 8]
|
|---|
| 178 | push qword [xDX + CIDETCPUCTX.rfl]
|
|---|
| 179 | movzx eax, word [xDX + CIDETCPUCTX.aSRegs + X86_SREG_CS * 2]
|
|---|
| 180 | push xAX
|
|---|
| 181 | push qword [xDX + CIDETCPUCTX.rip]
|
|---|
| 182 |
|
|---|
| 183 | ; Restore DS, xAX and xDX then do the iret.
|
|---|
| 184 | mov ds, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_DS * 2]
|
|---|
| 185 | mov xAX, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xAX * 8]
|
|---|
| 186 | mov xDX, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xDX * 8]
|
|---|
| 187 | iretq
|
|---|
| 188 | %else
|
|---|
| 189 | ; In 32-bit mode iret doesn't restore CS:ESP for us, so we have to
|
|---|
| 190 | ; make a choice whether the SS:ESP is more important than EFLAGS.
|
|---|
| 191 | cmp byte [xDX + CIDETCPUCTX.fTrickyStack], 0
|
|---|
| 192 | jne .tricky_stack
|
|---|
| 193 |
|
|---|
| 194 | mov ss, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_SS * 2]
|
|---|
| 195 | mov xSP, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xSP * 8]
|
|---|
| 196 |
|
|---|
| 197 | push dword [xDX + CIDETCPUCTX.rfl] ; iret frame
|
|---|
| 198 | movzx eax, word [xDX + CIDETCPUCTX.aSRegs + X86_SREG_CS * 2] ; iret frame
|
|---|
| 199 | push xAX ; iret frame
|
|---|
| 200 | push dword [xDX + CIDETCPUCTX.rip] ; iret frame
|
|---|
| 201 |
|
|---|
| 202 | mov xAX, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xAX * 8]
|
|---|
| 203 | mov ds, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_DS * 2]
|
|---|
| 204 | mov xDX, [cs:xDX + CIDETCPUCTX.aGRegs + X86_GREG_xDX * 8]
|
|---|
| 205 | iretd
|
|---|
| 206 |
|
|---|
| 207 | .tricky_stack:
|
|---|
| 208 | mov xAX, [xDX + CIDETCPUCTX.rip]
|
|---|
| 209 | mov [g_uTargetEip], xAX
|
|---|
| 210 | mov ax, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_CS * 2]
|
|---|
| 211 | mov [g_uTargetCs], ax
|
|---|
| 212 | push dword [xDX + CIDETCPUCTX.rfl]
|
|---|
| 213 | popfd
|
|---|
| 214 | mov ss, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_SS * 2]
|
|---|
| 215 | mov xSP, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xSP * 8]
|
|---|
| 216 | mov xAX, [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xAX * 8]
|
|---|
| 217 | mov ds, [xDX + CIDETCPUCTX.aSRegs + X86_SREG_DS * 2]
|
|---|
| 218 | mov xDX, [cs:xDX + CIDETCPUCTX.aGRegs + X86_GREG_xDX * 8]
|
|---|
| 219 | jmp far [cs:g_uTargetEip]
|
|---|
| 220 | %endif
|
|---|
| 221 | ENDPROC CidetAppSaveAndRestoreCtx
|
|---|
| 222 |
|
|---|
| 223 |
|
|---|
| 224 | ;;
|
|---|
| 225 | ; C callable version of CidetAppSaveAndRestoreCtx more or less.
|
|---|
| 226 | ;
|
|---|
| 227 | ; @param pSaveCtx x86:esp+4 gcc:rdi msc:rcx
|
|---|
| 228 | ; @param pRestoreCtx x86:esp+8 gcc:rsi msc:rdx
|
|---|
| 229 | BEGINPROC CidetAppExecute
|
|---|
| 230 | %ifdef RT_ARCH_X86
|
|---|
| 231 | mov ecx, [esp + 4]
|
|---|
| 232 | mov edx, [esp + 8]
|
|---|
| 233 | %elifdef ASM_CALL64_GCC
|
|---|
| 234 | mov rcx, rdi
|
|---|
| 235 | mov rdx, rsi
|
|---|
| 236 | %elifndef ASM_CALL64_MSC
|
|---|
| 237 | %error "unsupport arch."
|
|---|
| 238 | %endif
|
|---|
| 239 | mov word [xCX + CIDETCPUCTX.aSRegs + X86_SREG_DS * 2], ds
|
|---|
| 240 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xDX * 8], xDX
|
|---|
| 241 | mov [xCX + CIDETCPUCTX.aGRegs + X86_GREG_xCX * 8], xCX
|
|---|
| 242 | mov [xDX + CIDETCPUCTX.aGRegs + X86_GREG_xSP * 8], xSP
|
|---|
| 243 | jmp NAME(CidetAppSaveAndRestoreCtx)
|
|---|
| 244 | ENDPROC CidetAppExecute
|
|---|
| 245 |
|
|---|
| 246 |
|
|---|
| 247 | ;;
|
|---|
| 248 | ; C callable restore function.
|
|---|
| 249 | ;
|
|---|
| 250 | ; @param pRestoreCtx x86:esp+4 gcc:rdi msc:rcx
|
|---|
| 251 | BEGINPROC CidetAppRestoreCtx
|
|---|
| 252 | %ifdef RT_ARCH_X86
|
|---|
| 253 | mov edx, [esp + 4]
|
|---|
| 254 | %elifdef ASM_CALL64_GCC
|
|---|
| 255 | mov rdx, rdi
|
|---|
| 256 | %elifndef ASM_CALL64_MSC
|
|---|
| 257 | %error "unsupport arch."
|
|---|
| 258 | %endif
|
|---|
| 259 | mov ds, [cs:xDX + CIDETCPUCTX.aSRegs + X86_SREG_DS * 2]
|
|---|
| 260 | jmp NAME(CidetAppSaveAndRestoreCtx_Restore)
|
|---|
| 261 | ENDPROC CidetAppRestoreCtx
|
|---|
| 262 |
|
|---|
