| 1 | ; $Id: VMMR0A.asm 20534 2009-06-13 20:58:04Z vboxsync $
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| 2 | ;; @file
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| 3 | ; VMM - R0 assembly routines.
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| 4 | ;
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| 5 |
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| 6 | ;
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| 7 | ; Copyright (C) 2006-2007 Sun Microsystems, Inc.
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| 8 | ;
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| 9 | ; This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | ; available from http://www.virtualbox.org. This file is free software;
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| 11 | ; you can redistribute it and/or modify it under the terms of the GNU
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| 12 | ; General Public License (GPL) as published by the Free Software
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| 13 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | ;
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| 17 | ; Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 18 | ; Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 19 | ; additional information or have any questions.
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| 20 | ;
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| 21 |
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| 22 | ;*******************************************************************************
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| 23 | ;* Header Files *
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| 24 | ;*******************************************************************************
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| 25 | %include "VBox/asmdefs.mac"
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| 26 | %include "VMMInternal.mac"
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| 27 | %include "iprt/err.mac"
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| 28 |
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| 29 |
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| 30 | %ifdef RT_ARCH_X86 ; The other architecture(s) use(s) C99 variadict macros.
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| 31 | extern NAME(RTLogLogger)
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| 32 | %endif
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| 33 |
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| 34 | %ifdef RT_OS_DARWIN
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| 35 | %define VMM_R0_SWITCH_STACK
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| 36 | %endif
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| 37 |
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| 38 |
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| 39 | BEGINCODE
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| 40 |
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| 41 |
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| 42 | ;;
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| 43 | ; The setjmp variant used for calling Ring-3.
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| 44 | ;
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| 45 | ; This differs from the normal setjmp in that it will resume VMMR0CallHost if we're
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| 46 | ; in the middle of a ring-3 call. Another differences is the function pointer and
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| 47 | ; argument. This has to do with resuming code and the stack frame of the caller.
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| 48 | ;
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| 49 | ; @returns VINF_SUCCESS on success or whatever is passed to vmmR0CallHostLongJmp.
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| 50 | ; @param pJmpBuf msc:rcx gcc:rdi x86:[esp+0x04] Our jmp_buf.
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| 51 | ; @param pfn msc:rdx gcc:rsi x86:[esp+0x08] The function to be called when not resuming.
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| 52 | ; @param pvUser1 msc:r8 gcc:rdx x86:[esp+0x0c] The argument of that function.
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| 53 | ; @param pvUser2 msc:r9 gcc:rcx x86:[esp+0x10] The argument of that function.
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| 54 | ;
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| 55 | BEGINPROC vmmR0CallHostSetJmp
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| 56 | GLOBALNAME vmmR0CallHostSetJmpEx
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| 57 | %ifdef RT_ARCH_X86
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| 58 | ;
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| 59 | ; Save the registers.
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| 60 | ;
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| 61 | mov edx, [esp + 4h] ; pJmpBuf
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| 62 | mov [edx + VMMR0JMPBUF.ebx], ebx
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| 63 | mov [edx + VMMR0JMPBUF.esi], esi
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| 64 | mov [edx + VMMR0JMPBUF.edi], edi
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| 65 | mov [edx + VMMR0JMPBUF.ebp], ebp
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| 66 | mov eax, [esp]
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| 67 | mov [edx + VMMR0JMPBUF.eip], eax
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| 68 | lea ecx, [esp + 4] ; (used in resume)
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| 69 | mov [edx + VMMR0JMPBUF.esp], ecx
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| 70 |
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| 71 | ;
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| 72 | ; If we're not in a ring-3 call, call pfn and return.
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| 73 | ;
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| 74 | test byte [edx + VMMR0JMPBUF.fInRing3Call], 1
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| 75 | jnz .resume
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| 76 |
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| 77 | mov ebx, edx ; pJmpBuf -> ebx (persistent reg)
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| 78 | %ifdef VMM_R0_SWITCH_STACK
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| 79 | mov esi, [ebx + VMMR0JMPBUF.pvSavedStack]
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| 80 | test esi, esi
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| 81 | jz .entry_error
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| 82 | %ifdef VBOX_STRICT
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| 83 | cmp dword [esi], 0h
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| 84 | jne .entry_error
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| 85 | mov edx, esi
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| 86 | mov edi, esi
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| 87 | mov ecx, 2048
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| 88 | mov eax, 0eeeeeeeeh
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| 89 | repne stosd
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| 90 | %endif
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| 91 | lea esi, [esi + 8192 - 32]
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| 92 | mov [esi + 1ch], dword 0deadbeefh ; Marker 1.
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| 93 | mov [esi + 18h], ebx ; Save pJmpBuf pointer.
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| 94 | mov [esi + 14h], dword 00c00ffeeh ; Marker 2.
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| 95 | mov [esi + 10h], dword 0f00dbeefh ; Marker 3.
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| 96 | mov edx, [esp + 10h] ; pvArg2
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| 97 | mov [esi + 04h], edx
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| 98 | mov ecx, [esp + 0ch] ; pvArg1
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| 99 | mov [esi ], ecx
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| 100 | mov eax, [esp + 08h] ; pfn
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| 101 | mov esp, esi ; Switch stack!
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| 102 | call eax
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| 103 | and dword [esi + 1ch], byte 0 ; clear marker.
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| 104 |
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| 105 | %ifdef VBOX_STRICT
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| 106 | mov esi, [ebx + VMMR0JMPBUF.pvSavedStack]
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| 107 | cmp [esi], 0eeeeeeeeh ; Check for stack overflow
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| 108 | jne .stack_overflow
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| 109 | cmp [esi + 04h], 0eeeeeeeeh
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| 110 | jne .stack_overflow
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| 111 | cmp [esi + 08h], 0eeeeeeeeh
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| 112 | jne .stack_overflow
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| 113 | cmp [esi + 0ch], 0eeeeeeeeh
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| 114 | jne .stack_overflow
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| 115 | cmp [esi + 10h], 0eeeeeeeeh
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| 116 | jne .stack_overflow
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| 117 | cmp [esi + 20h], 0eeeeeeeeh
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| 118 | jne .stack_overflow
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| 119 | cmp [esi + 30h], 0eeeeeeeeh
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| 120 | jne .stack_overflow
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| 121 | mov dword [esi], 0h ; Reset the marker
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| 122 | %endif
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| 123 |
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| 124 | %else ; !VMM_R0_SWITCH_STACK
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| 125 | mov ecx, [esp + 0ch] ; pvArg1
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| 126 | mov edx, [esp + 10h] ; pvArg2
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| 127 | mov eax, [esp + 08h] ; pfn
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| 128 | sub esp, 12 ; align the stack on a 16-byte boundrary.
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| 129 | mov [esp ], ecx
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| 130 | mov [esp + 04h], edx
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| 131 | call eax
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| 132 | %endif ; !VMM_R0_SWITCH_STACK
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| 133 | mov edx, ebx ; pJmpBuf -> edx (volatile reg)
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| 134 |
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| 135 | ;
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| 136 | ; Return like in the long jump but clear eip, no short cuts here.
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| 137 | ;
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| 138 | .proper_return:
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| 139 | mov ebx, [edx + VMMR0JMPBUF.ebx]
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| 140 | mov esi, [edx + VMMR0JMPBUF.esi]
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| 141 | mov edi, [edx + VMMR0JMPBUF.edi]
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| 142 | mov ebp, [edx + VMMR0JMPBUF.ebp]
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| 143 | mov ecx, [edx + VMMR0JMPBUF.eip]
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| 144 | and dword [edx + VMMR0JMPBUF.eip], byte 0 ; used for valid check.
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| 145 | mov esp, [edx + VMMR0JMPBUF.esp]
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| 146 | jmp ecx
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| 147 |
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| 148 | .entry_error:
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| 149 | mov eax, VERR_INTERNAL_ERROR_2
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| 150 | jmp .proper_return
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| 151 |
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| 152 | .stack_overflow:
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| 153 | mov eax, VERR_INTERNAL_ERROR_5
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| 154 | jmp .proper_return
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| 155 |
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| 156 | ;
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| 157 | ; Aborting resume.
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| 158 | ;
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| 159 | .bad:
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| 160 | and dword [edx + VMMR0JMPBUF.eip], byte 0 ; used for valid check.
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| 161 | mov edi, [edx + VMMR0JMPBUF.edi]
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| 162 | mov esi, [edx + VMMR0JMPBUF.esi]
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| 163 | mov ebx, [edx + VMMR0JMPBUF.ebx]
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| 164 | mov eax, VERR_INTERNAL_ERROR_3 ; todo better return code!
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| 165 | ret
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| 166 |
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| 167 | ;
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| 168 | ; Resume VMMR0CallHost the call.
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| 169 | ;
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| 170 | .resume:
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| 171 | ; Sanity checks.
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| 172 | %ifdef VMM_R0_SWITCH_STACK
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| 173 | mov eax, [edx + VMMR0JMPBUF.pvSavedStack]
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| 174 | %ifdef RT_STRICT
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| 175 | cmp dword [eax], 0eeeeeeeeh
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| 176 | %endif
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| 177 | lea eax, [eax + 8192 - 32]
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| 178 | cmp dword [eax + 1ch], 0deadbeefh ; Marker 1.
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| 179 | jne .bad
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| 180 | %ifdef RT_STRICT
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| 181 | cmp [esi + 18h], edx ; The saved pJmpBuf pointer.
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| 182 | jne .bad
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| 183 | cmp dword [esi + 14h], 00c00ffeeh ; Marker 2.
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| 184 | jne .bad
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| 185 | cmp dword [esi + 10h], 0f00dbeefh ; Marker 3.
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| 186 | jne .bad
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| 187 | %endif
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| 188 | %else ; !VMM_R0_SWITCH_STACK
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| 189 | cmp ecx, [edx + VMMR0JMPBUF.SpCheck]
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| 190 | jne .bad
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| 191 | .espCheck_ok:
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| 192 | mov ecx, [edx + VMMR0JMPBUF.cbSavedStack]
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| 193 | cmp ecx, 8192
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| 194 | ja .bad
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| 195 | test ecx, 3
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| 196 | jnz .bad
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| 197 | mov edi, [edx + VMMR0JMPBUF.esp]
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| 198 | sub edi, [edx + VMMR0JMPBUF.SpResume]
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| 199 | cmp ecx, edi
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| 200 | jne .bad
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| 201 | %endif
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| 202 |
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| 203 | %ifdef VMM_R0_SWITCH_STACK
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| 204 | ; Switch stack.
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| 205 | mov esp, [edx + VMMR0JMPBUF.SpResume]
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| 206 | %else
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| 207 | ; Restore the stack.
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| 208 | mov ecx, [edx + VMMR0JMPBUF.cbSavedStack]
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| 209 | shr ecx, 2
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| 210 | mov esi, [edx + VMMR0JMPBUF.pvSavedStack]
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| 211 | mov edi, [edx + VMMR0JMPBUF.SpResume]
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| 212 | mov esp, edi
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| 213 | rep movsd
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| 214 | %endif ; !VMM_R0_SWITCH_STACK
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| 215 | mov byte [edx + VMMR0JMPBUF.fInRing3Call], 0
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| 216 |
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| 217 | ; Continue where we left off.
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| 218 | %ifdef VBOX_STRICT
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| 219 | pop eax ; magic
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| 220 | cmp eax, 0f00dbed0h
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| 221 | je .magic_ok
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| 222 | mov ecx, 0123h
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| 223 | mov [ecx], edx
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| 224 | .magic_ok:
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| 225 | %endif
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| 226 | popf
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| 227 | pop ebx
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| 228 | pop esi
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| 229 | pop edi
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| 230 | pop ebp
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| 231 | xor eax, eax ; VINF_SUCCESS
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| 232 | ret
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| 233 | %endif ; RT_ARCH_X86
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| 234 |
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| 235 | %ifdef RT_ARCH_AMD64
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| 236 | ;
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| 237 | ; Save the registers.
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| 238 | ;
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| 239 | push rbp
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| 240 | mov rbp, rsp
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| 241 | %ifdef ASM_CALL64_MSC
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| 242 | sub rsp, 30h
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| 243 | mov r11, rdx ; pfn
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| 244 | mov rdx, rcx ; pJmpBuf;
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| 245 | %else
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| 246 | sub rsp, 10h
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| 247 | mov r8, rdx ; pvUser1 (save it like MSC)
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| 248 | mov r9, rcx ; pvUser2 (save it like MSC)
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| 249 | mov r11, rsi ; pfn
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| 250 | mov rdx, rdi ; pJmpBuf
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| 251 | %endif
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| 252 | mov [rdx + VMMR0JMPBUF.rbx], rbx
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| 253 | %ifdef ASM_CALL64_MSC
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| 254 | mov [rdx + VMMR0JMPBUF.rsi], rsi
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| 255 | mov [rdx + VMMR0JMPBUF.rdi], rdi
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| 256 | %endif
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| 257 | mov r10, [rbp]
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| 258 | mov [rdx + VMMR0JMPBUF.rbp], r10
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| 259 | mov [rdx + VMMR0JMPBUF.r12], r12
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| 260 | mov [rdx + VMMR0JMPBUF.r13], r13
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| 261 | mov [rdx + VMMR0JMPBUF.r14], r14
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| 262 | mov [rdx + VMMR0JMPBUF.r15], r15
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| 263 | mov rax, [rbp + 8]
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| 264 | mov [rdx + VMMR0JMPBUF.rip], rax
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| 265 | lea r10, [rbp + 10h] ; (used in resume)
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| 266 | mov [rdx + VMMR0JMPBUF.rsp], r10
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| 267 |
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| 268 | ;
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| 269 | ; If we're not in a ring-3 call, call pfn and return.
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| 270 | ;
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| 271 | test byte [rdx + VMMR0JMPBUF.fInRing3Call], 1
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| 272 | jnz .resume
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| 273 |
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| 274 | %ifdef VMM_R0_SWITCH_STACK
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| 275 | mov r15, [rdx + VMMR0JMPBUF.pvSavedStack]
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| 276 | test r15, r15
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| 277 | jz .entry_error
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| 278 | %ifdef VBOX_STRICT
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| 279 | cmp dword [r15], 0h
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| 280 | jne .entry_error
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| 281 | mov rdi, r15
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| 282 | mov rcx, 1024
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| 283 | mov rax, 00eeeeeeeffeeeeeeeh
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| 284 | repne stosq
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| 285 | mov [rdi - 10h], rbx
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| 286 | %endif
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| 287 | lea r15, [r15 + 8192 - 40h]
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| 288 | mov rsp, r15 ; Switch stack!
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| 289 | %endif ; VMM_R0_SWITCH_STACK
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| 290 |
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| 291 | mov r12, rdx ; Save pJmpBuf.
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| 292 | %ifdef ASM_CALL64_MSC
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| 293 | mov rcx, r8 ; pvUser -> arg0
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| 294 | mov rdx, r9
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| 295 | %else
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| 296 | mov rdi, r8 ; pvUser -> arg0
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| 297 | mov rsi, r9
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| 298 | %endif
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| 299 | call r11
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| 300 | mov rdx, r12 ; Restore pJmpBuf
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| 301 |
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| 302 | %ifdef VMM_R0_SWITCH_STACK
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| 303 | %ifdef VBOX_STRICT
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| 304 | mov r15, [rdx + VMMR0JMPBUF.pvSavedStack]
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| 305 | mov dword [r15], 0h ; Reset the marker
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| 306 | %endif
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| 307 | %endif
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| 308 |
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| 309 | ;
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| 310 | ; Return like in the long jump but clear eip, no short cuts here.
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| 311 | ;
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| 312 | .proper_return:
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| 313 | mov rbx, [rdx + VMMR0JMPBUF.rbx]
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| 314 | %ifdef ASM_CALL64_MSC
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| 315 | mov rsi, [rdx + VMMR0JMPBUF.rsi]
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| 316 | mov rdi, [rdx + VMMR0JMPBUF.rdi]
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| 317 | %endif
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| 318 | mov r12, [rdx + VMMR0JMPBUF.r12]
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| 319 | mov r13, [rdx + VMMR0JMPBUF.r13]
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| 320 | mov r14, [rdx + VMMR0JMPBUF.r14]
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| 321 | mov r15, [rdx + VMMR0JMPBUF.r15]
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| 322 | mov rbp, [rdx + VMMR0JMPBUF.rbp]
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| 323 | mov rcx, [rdx + VMMR0JMPBUF.rip]
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| 324 | and qword [rdx + VMMR0JMPBUF.rip], byte 0 ; used for valid check.
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| 325 | mov rsp, [rdx + VMMR0JMPBUF.rsp]
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| 326 | jmp rcx
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| 327 |
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| 328 | .entry_error:
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| 329 | mov eax, VERR_INTERNAL_ERROR_2
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| 330 | jmp .proper_return
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| 331 |
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| 332 | ;
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| 333 | ; Resume VMMR0CallHost the call.
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| 334 | ;
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| 335 | .resume:
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| 336 | %ifdef VMM_R0_SWITCH_STACK
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| 337 | ; Switch stack.
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| 338 | mov rsp, [rdx + VMMR0JMPBUF.SpResume]
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| 339 | %else ; !VMM_R0_SWITCH_STACK
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| 340 | ; Sanity checks.
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| 341 | cmp r10, [rdx + VMMR0JMPBUF.SpCheck]
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| 342 | je .rspCheck_ok
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| 343 | .bad:
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| 344 | and qword [rdx + VMMR0JMPBUF.rip], byte 0 ; used for valid check.
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| 345 | mov rbx, [rdx + VMMR0JMPBUF.rbx]
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| 346 | %ifdef ASM_CALL64_MSC
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| 347 | mov rsi, [rdx + VMMR0JMPBUF.rsi]
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| 348 | mov rdi, [rdx + VMMR0JMPBUF.rdi]
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| 349 | %endif
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| 350 | mov r12, [rdx + VMMR0JMPBUF.r12]
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| 351 | mov r13, [rdx + VMMR0JMPBUF.r13]
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| 352 | mov r14, [rdx + VMMR0JMPBUF.r14]
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| 353 | mov r15, [rdx + VMMR0JMPBUF.r15]
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| 354 | mov eax, VERR_INTERNAL_ERROR_2
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| 355 | leave
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| 356 | ret
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| 357 |
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| 358 | .rspCheck_ok:
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| 359 | mov ecx, [rdx + VMMR0JMPBUF.cbSavedStack]
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| 360 | cmp rcx, 8192
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| 361 | ja .bad
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| 362 | test rcx, 3
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| 363 | jnz .bad
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| 364 | mov rdi, [rdx + VMMR0JMPBUF.rsp]
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| 365 | sub rdi, [rdx + VMMR0JMPBUF.SpResume]
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| 366 | cmp rcx, rdi
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| 367 | jne .bad
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| 368 |
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| 369 | ;
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| 370 | ; Restore the stack.
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| 371 | ;
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| 372 | mov ecx, [rdx + VMMR0JMPBUF.cbSavedStack]
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| 373 | shr ecx, 3
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| 374 | mov rsi, [rdx + VMMR0JMPBUF.pvSavedStack]
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| 375 | mov rdi, [rdx + VMMR0JMPBUF.SpResume]
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| 376 | mov rsp, rdi
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| 377 | rep movsq
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| 378 | %endif ; !VMM_R0_SWITCH_STACK
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| 379 | mov byte [rdx + VMMR0JMPBUF.fInRing3Call], 0
|
|---|
| 380 |
|
|---|
| 381 | ;
|
|---|
| 382 | ; Continue where we left off.
|
|---|
| 383 | ;
|
|---|
| 384 | popf
|
|---|
| 385 | pop rbx
|
|---|
| 386 | %ifdef ASM_CALL64_MSC
|
|---|
| 387 | pop rsi
|
|---|
| 388 | pop rdi
|
|---|
| 389 | %endif
|
|---|
| 390 | pop r12
|
|---|
| 391 | pop r13
|
|---|
| 392 | pop r14
|
|---|
| 393 | pop r15
|
|---|
| 394 | pop rbp
|
|---|
| 395 | xor eax, eax ; VINF_SUCCESS
|
|---|
| 396 | ret
|
|---|
| 397 | %endif
|
|---|
| 398 | ENDPROC vmmR0CallHostSetJmp
|
|---|
| 399 |
|
|---|
| 400 |
|
|---|
| 401 | ;;
|
|---|
| 402 | ; Worker for VMMR0CallHost.
|
|---|
| 403 | ; This will save the stack and registers.
|
|---|
| 404 | ;
|
|---|
| 405 | ; @param pJmpBuf msc:rcx gcc:rdi x86:[ebp+8] Pointer to the jump buffer.
|
|---|
| 406 | ; @param rc msc:rdx gcc:rsi x86:[ebp+c] The return code.
|
|---|
| 407 | ;
|
|---|
| 408 | BEGINPROC vmmR0CallHostLongJmp
|
|---|
| 409 | %ifdef RT_ARCH_X86
|
|---|
| 410 | ;
|
|---|
| 411 | ; Save the registers on the stack.
|
|---|
| 412 | ;
|
|---|
| 413 | push ebp
|
|---|
| 414 | mov ebp, esp
|
|---|
| 415 | push edi
|
|---|
| 416 | push esi
|
|---|
| 417 | push ebx
|
|---|
| 418 | pushf
|
|---|
| 419 | %ifdef VBOX_STRICT
|
|---|
| 420 | push dword 0f00dbed0h
|
|---|
| 421 | %endif
|
|---|
| 422 |
|
|---|
| 423 | ;
|
|---|
| 424 | ; Load parameters.
|
|---|
| 425 | ;
|
|---|
| 426 | mov edx, [ebp + 08h] ; pJmpBuf
|
|---|
| 427 | mov eax, [ebp + 0ch] ; rc
|
|---|
| 428 |
|
|---|
| 429 | ;
|
|---|
| 430 | ; Is the jump buffer armed?
|
|---|
| 431 | ;
|
|---|
| 432 | cmp dword [edx + VMMR0JMPBUF.eip], byte 0
|
|---|
| 433 | je .nok
|
|---|
| 434 |
|
|---|
| 435 | ;
|
|---|
| 436 | ; Sanity checks.
|
|---|
| 437 | ;
|
|---|
| 438 | mov edi, [edx + VMMR0JMPBUF.pvSavedStack]
|
|---|
| 439 | test edi, edi ; darwin may set this to 0.
|
|---|
| 440 | jz .nok
|
|---|
| 441 | mov [edx + VMMR0JMPBUF.SpResume], esp
|
|---|
| 442 | %ifndef VMM_R0_SWITCH_STACK
|
|---|
| 443 | mov esi, esp
|
|---|
| 444 | mov ecx, [edx + VMMR0JMPBUF.esp]
|
|---|
| 445 | sub ecx, esi
|
|---|
| 446 |
|
|---|
| 447 | ; two sanity checks on the size.
|
|---|
| 448 | cmp ecx, 8192 ; check max size.
|
|---|
| 449 | jnbe .nok
|
|---|
| 450 |
|
|---|
| 451 | ;
|
|---|
| 452 | ; Copy the stack.
|
|---|
| 453 | ;
|
|---|
| 454 | test ecx, 3 ; check alignment
|
|---|
| 455 | jnz .nok
|
|---|
| 456 | mov [edx + VMMR0JMPBUF.cbSavedStack], ecx
|
|---|
| 457 | shr ecx, 2
|
|---|
| 458 | rep movsd
|
|---|
| 459 | %endif ; !VMM_R0_SWITCH_STACK
|
|---|
| 460 |
|
|---|
| 461 | ; Save ESP & EBP to enable stack dumps
|
|---|
| 462 | mov ecx, ebp
|
|---|
| 463 | mov [edx + VMMR0JMPBUF.SavedEbp], ecx
|
|---|
| 464 | sub ecx, 4
|
|---|
| 465 | mov [edx + VMMR0JMPBUF.SavedEsp], ecx
|
|---|
| 466 |
|
|---|
| 467 | ; store the last pieces of info.
|
|---|
| 468 | mov ecx, [edx + VMMR0JMPBUF.esp]
|
|---|
| 469 | mov [edx + VMMR0JMPBUF.SpCheck], ecx
|
|---|
| 470 | mov byte [edx + VMMR0JMPBUF.fInRing3Call], 1
|
|---|
| 471 |
|
|---|
| 472 | ;
|
|---|
| 473 | ; Do the long jump.
|
|---|
| 474 | ;
|
|---|
| 475 | mov ebx, [edx + VMMR0JMPBUF.ebx]
|
|---|
| 476 | mov esi, [edx + VMMR0JMPBUF.esi]
|
|---|
| 477 | mov edi, [edx + VMMR0JMPBUF.edi]
|
|---|
| 478 | mov ebp, [edx + VMMR0JMPBUF.ebp]
|
|---|
| 479 | mov ecx, [edx + VMMR0JMPBUF.eip]
|
|---|
| 480 | mov esp, [edx + VMMR0JMPBUF.esp]
|
|---|
| 481 | jmp ecx
|
|---|
| 482 |
|
|---|
| 483 | ;
|
|---|
| 484 | ; Failure
|
|---|
| 485 | ;
|
|---|
| 486 | .nok:
|
|---|
| 487 | %ifdef VBOX_STRICT
|
|---|
| 488 | pop eax ; magic
|
|---|
| 489 | cmp eax, 0f00dbed0h
|
|---|
| 490 | je .magic_ok
|
|---|
| 491 | mov ecx, 0123h
|
|---|
| 492 | mov [ecx], edx
|
|---|
| 493 | .magic_ok:
|
|---|
| 494 | %endif
|
|---|
| 495 | popf
|
|---|
| 496 | pop ebx
|
|---|
| 497 | pop esi
|
|---|
| 498 | pop edi
|
|---|
| 499 | mov eax, VERR_INTERNAL_ERROR_4
|
|---|
| 500 | leave
|
|---|
| 501 | ret
|
|---|
| 502 | %endif ; RT_ARCH_X86
|
|---|
| 503 |
|
|---|
| 504 | %ifdef RT_ARCH_AMD64
|
|---|
| 505 | ;
|
|---|
| 506 | ; Save the registers on the stack.
|
|---|
| 507 | ;
|
|---|
| 508 | push rbp
|
|---|
| 509 | mov rbp, rsp
|
|---|
| 510 | push r15
|
|---|
| 511 | push r14
|
|---|
| 512 | push r13
|
|---|
| 513 | push r12
|
|---|
| 514 | %ifdef ASM_CALL64_MSC
|
|---|
| 515 | push rdi
|
|---|
| 516 | push rsi
|
|---|
| 517 | %endif
|
|---|
| 518 | push rbx
|
|---|
| 519 | pushf
|
|---|
| 520 |
|
|---|
| 521 | ;
|
|---|
| 522 | ; Normalize the parameters.
|
|---|
| 523 | ;
|
|---|
| 524 | %ifdef ASM_CALL64_MSC
|
|---|
| 525 | mov eax, edx ; rc
|
|---|
| 526 | mov rdx, rcx ; pJmpBuf
|
|---|
| 527 | %else
|
|---|
| 528 | mov rdx, rdi ; pJmpBuf
|
|---|
| 529 | mov eax, esi ; rc
|
|---|
| 530 | %endif
|
|---|
| 531 |
|
|---|
| 532 | ;
|
|---|
| 533 | ; Is the jump buffer armed?
|
|---|
| 534 | ;
|
|---|
| 535 | cmp qword [rdx + VMMR0JMPBUF.rip], byte 0
|
|---|
| 536 | je .nok
|
|---|
| 537 |
|
|---|
| 538 | ;
|
|---|
| 539 | ; Sanity checks.
|
|---|
| 540 | ;
|
|---|
| 541 | mov rdi, [rdx + VMMR0JMPBUF.pvSavedStack]
|
|---|
| 542 | test rdi, rdi ; darwin may set this to 0.
|
|---|
| 543 | jz .nok
|
|---|
| 544 | mov [rdx + VMMR0JMPBUF.SpResume], rsp
|
|---|
| 545 | %ifndef VMM_R0_SWITCH_STACK
|
|---|
| 546 | mov rsi, rsp
|
|---|
| 547 | mov rcx, [rdx + VMMR0JMPBUF.rsp]
|
|---|
| 548 | sub rcx, rsi
|
|---|
| 549 |
|
|---|
| 550 | ; two sanity checks on the size.
|
|---|
| 551 | cmp rcx, 8192 ; check max size.
|
|---|
| 552 | jnbe .nok
|
|---|
| 553 |
|
|---|
| 554 | ;
|
|---|
| 555 | ; Copy the stack
|
|---|
| 556 | ;
|
|---|
| 557 | test ecx, 7 ; check alignment
|
|---|
| 558 | jnz .nok
|
|---|
| 559 | mov [rdx + VMMR0JMPBUF.cbSavedStack], ecx
|
|---|
| 560 | shr ecx, 3
|
|---|
| 561 | rep movsq
|
|---|
| 562 |
|
|---|
| 563 | %endif ; !VMM_R0_SWITCH_STACK
|
|---|
| 564 |
|
|---|
| 565 | ; Save RSP & RBP to enable stack dumps
|
|---|
| 566 | mov rcx, rbp
|
|---|
| 567 | mov [rdx + VMMR0JMPBUF.SavedEbp], rcx
|
|---|
| 568 | sub rcx, 8
|
|---|
| 569 | mov [rdx + VMMR0JMPBUF.SavedEsp], rcx
|
|---|
| 570 |
|
|---|
| 571 | ; store the last pieces of info.
|
|---|
| 572 | mov rcx, [rdx + VMMR0JMPBUF.rsp]
|
|---|
| 573 | mov [rdx + VMMR0JMPBUF.SpCheck], rcx
|
|---|
| 574 | mov byte [rdx + VMMR0JMPBUF.fInRing3Call], 1
|
|---|
| 575 |
|
|---|
| 576 | ;
|
|---|
| 577 | ; Do the long jump.
|
|---|
| 578 | ;
|
|---|
| 579 | mov rbx, [rdx + VMMR0JMPBUF.rbx]
|
|---|
| 580 | %ifdef ASM_CALL64_MSC
|
|---|
| 581 | mov rsi, [rdx + VMMR0JMPBUF.rsi]
|
|---|
| 582 | mov rdi, [rdx + VMMR0JMPBUF.rdi]
|
|---|
| 583 | %endif
|
|---|
| 584 | mov r12, [rdx + VMMR0JMPBUF.r12]
|
|---|
| 585 | mov r13, [rdx + VMMR0JMPBUF.r13]
|
|---|
| 586 | mov r14, [rdx + VMMR0JMPBUF.r14]
|
|---|
| 587 | mov r15, [rdx + VMMR0JMPBUF.r15]
|
|---|
| 588 | mov rbp, [rdx + VMMR0JMPBUF.rbp]
|
|---|
| 589 | mov rcx, [rdx + VMMR0JMPBUF.rip]
|
|---|
| 590 | mov rsp, [rdx + VMMR0JMPBUF.rsp]
|
|---|
| 591 | jmp rcx
|
|---|
| 592 |
|
|---|
| 593 | ;
|
|---|
| 594 | ; Failure
|
|---|
| 595 | ;
|
|---|
| 596 | .nok:
|
|---|
| 597 | mov eax, VERR_INTERNAL_ERROR_4
|
|---|
| 598 | popf
|
|---|
| 599 | pop rbx
|
|---|
| 600 | %ifdef ASM_CALL64_MSC
|
|---|
| 601 | pop rsi
|
|---|
| 602 | pop rdi
|
|---|
| 603 | %endif
|
|---|
| 604 | pop r12
|
|---|
| 605 | pop r13
|
|---|
| 606 | pop r14
|
|---|
| 607 | pop r15
|
|---|
| 608 | leave
|
|---|
| 609 | ret
|
|---|
| 610 |
|
|---|
| 611 | %endif
|
|---|
| 612 | ENDPROC vmmR0CallHostLongJmp
|
|---|
| 613 |
|
|---|
| 614 |
|
|---|
| 615 | ;;
|
|---|
| 616 | ; Internal R0 logger worker: Logger wrapper.
|
|---|
| 617 | ;
|
|---|
| 618 | ; @cproto VMMR0DECL(void) vmmR0LoggerWrapper(const char *pszFormat, ...)
|
|---|
| 619 | ;
|
|---|
| 620 | EXPORTEDNAME vmmR0LoggerWrapper
|
|---|
| 621 | %ifdef RT_ARCH_X86 ; The other architecture(s) use(s) C99 variadict macros.
|
|---|
| 622 | push 0 ; assumes we're the wrapper for a default instance.
|
|---|
| 623 | call NAME(RTLogLogger)
|
|---|
| 624 | add esp, byte 4
|
|---|
| 625 | ret
|
|---|
| 626 | %else
|
|---|
| 627 | int3
|
|---|
| 628 | int3
|
|---|
| 629 | int3
|
|---|
| 630 | ret
|
|---|
| 631 | %endif
|
|---|
| 632 | ENDPROC vmmR0LoggerWrapper
|
|---|
| 633 |
|
|---|
