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2905 lines
80 KiB
2905 lines
80 KiB
//----------------------------------------------------------------------------
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//
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// Register portions of X86 machine implementation.
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//
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// Copyright (C) Microsoft Corporation, 2000-2001.
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//
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//----------------------------------------------------------------------------
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#include "ntsdp.hpp"
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// XXX drewb - Temporary log to try and catch some
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// SET_OF_INVALID_CONTEXT bugchecks occurring randomly on x86.
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ULONG g_EspLog[64];
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PULONG g_EspLogCur = g_EspLog;
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// See Get/SetRegVal comments in machine.hpp.
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#define RegValError Do_not_use_GetSetRegVal_in_machine_implementations
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#define GetRegVal(index, val) RegValError
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#define GetRegVal32(index) RegValError
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#define GetRegVal64(index) RegValError
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#define SetRegVal(index, val) RegValError
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#define SetRegVal32(index, val) RegValError
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#define SetRegVal64(index, val) RegValError
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#define X86_RPL_MASK 3
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BOOL g_X86InCode16;
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BOOL g_X86InVm86;
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#define REGALL_SEGREG REGALL_EXTRA0
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#define REGALL_MMXREG REGALL_EXTRA1
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#define REGALL_DREG REGALL_EXTRA2
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REGALLDESC g_X86AllExtraDesc[] =
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{
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REGALL_SEGREG, "Segment registers",
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REGALL_MMXREG, "MMX registers",
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REGALL_DREG, "Debug registers and, in kernel, CR4",
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REGALL_XMMREG, "SSE XMM registers",
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0, NULL,
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};
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#define REGALL_CREG REGALL_EXTRA4
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#define REGALL_DESC REGALL_EXTRA5
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REGALLDESC g_X86KernelExtraDesc[] =
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{
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REGALL_CREG, "CR0, CR2 and CR3",
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REGALL_DESC, "Descriptor and task state",
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0, NULL,
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};
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char g_Gs[] = "gs";
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char g_Fs[] = "fs";
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char g_Es[] = "es";
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char g_Ds[] = "ds";
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char g_Edi[] = "edi";
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char g_Esi[] = "esi";
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char g_Ebx[] = "ebx";
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char g_Edx[] = "edx";
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char g_Ecx[] = "ecx";
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char g_Eax[] = "eax";
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char g_Ebp[] = "ebp";
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char g_Eip[] = "eip";
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char g_Cs[] = "cs";
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char g_Efl[] = "efl";
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char g_Esp[] = "esp";
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char g_Ss[] = "ss";
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char g_Dr0[] = "dr0";
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char g_Dr1[] = "dr1";
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char g_Dr2[] = "dr2";
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char g_Dr3[] = "dr3";
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char g_Dr6[] = "dr6";
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char g_Dr7[] = "dr7";
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char g_Cr0[] = "cr0";
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char g_Cr2[] = "cr2";
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char g_Cr3[] = "cr3";
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char g_Cr4[] = "cr4";
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char g_Gdtr[] = "gdtr";
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char g_Gdtl[] = "gdtl";
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char g_Idtr[] = "idtr";
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char g_Idtl[] = "idtl";
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char g_Tr[] = "tr";
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char g_Ldtr[] = "ldtr";
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char g_Di[] = "di";
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char g_Si[] = "si";
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char g_Bx[] = "bx";
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char g_Dx[] = "dx";
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char g_Cx[] = "cx";
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char g_Ax[] = "ax";
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char g_Bp[] = "bp";
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char g_Ip[] = "ip";
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char g_Fl[] = "fl";
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char g_Sp[] = "sp";
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char g_Bl[] = "bl";
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char g_Dl[] = "dl";
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char g_Cl[] = "cl";
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char g_Al[] = "al";
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char g_Bh[] = "bh";
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char g_Dh[] = "dh";
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char g_Ch[] = "ch";
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char g_Ah[] = "ah";
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char g_Iopl[] = "iopl";
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char g_Of[] = "of";
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char g_Df[] = "df";
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char g_If[] = "if";
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char g_Tf[] = "tf";
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char g_Sf[] = "sf";
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char g_Zf[] = "zf";
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char g_Af[] = "af";
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char g_Pf[] = "pf";
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char g_Cf[] = "cf";
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char g_Vip[] = "vip";
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char g_Vif[] = "vif";
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char g_Fpcw[] = "fpcw";
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char g_Fpsw[] = "fpsw";
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char g_Fptw[] = "fptw";
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char g_St0[] = "st0";
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char g_St1[] = "st1";
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char g_St2[] = "st2";
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char g_St3[] = "st3";
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char g_St4[] = "st4";
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char g_St5[] = "st5";
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char g_St6[] = "st6";
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char g_St7[] = "st7";
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char g_Mm0[] = "mm0";
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char g_Mm1[] = "mm1";
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char g_Mm2[] = "mm2";
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char g_Mm3[] = "mm3";
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char g_Mm4[] = "mm4";
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char g_Mm5[] = "mm5";
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char g_Mm6[] = "mm6";
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char g_Mm7[] = "mm7";
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char g_Mxcsr[] = "mxcsr";
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char g_Xmm0[] = "xmm0";
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char g_Xmm1[] = "xmm1";
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char g_Xmm2[] = "xmm2";
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char g_Xmm3[] = "xmm3";
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char g_Xmm4[] = "xmm4";
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char g_Xmm5[] = "xmm5";
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char g_Xmm6[] = "xmm6";
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char g_Xmm7[] = "xmm7";
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REGDEF g_X86Defs[] =
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{
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{ g_Gs, X86_GS },
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{ g_Fs, X86_FS },
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{ g_Es, X86_ES },
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{ g_Ds, X86_DS },
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{ g_Edi, X86_EDI },
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{ g_Esi, X86_ESI },
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{ g_Ebx, X86_EBX },
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{ g_Edx, X86_EDX },
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{ g_Ecx, X86_ECX },
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{ g_Eax, X86_EAX },
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{ g_Ebp, X86_EBP },
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{ g_Eip, X86_EIP },
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{ g_Cs, X86_CS },
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{ g_Efl, X86_EFL },
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{ g_Esp, X86_ESP },
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{ g_Ss, X86_SS },
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{ g_Dr0, X86_DR0 },
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{ g_Dr1, X86_DR1 },
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{ g_Dr2, X86_DR2 },
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{ g_Dr3, X86_DR3 },
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{ g_Dr6, X86_DR6 },
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{ g_Dr7, X86_DR7 },
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{ g_Di, X86_DI },
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{ g_Si, X86_SI },
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{ g_Bx, X86_BX },
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{ g_Dx, X86_DX },
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{ g_Cx, X86_CX },
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{ g_Ax, X86_AX },
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{ g_Bp, X86_BP },
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{ g_Ip, X86_IP },
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{ g_Fl, X86_FL },
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{ g_Sp, X86_SP },
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{ g_Bl, X86_BL },
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{ g_Dl, X86_DL },
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{ g_Cl, X86_CL },
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{ g_Al, X86_AL },
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{ g_Bh, X86_BH },
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{ g_Dh, X86_DH },
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{ g_Ch, X86_CH },
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{ g_Ah, X86_AH },
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{ g_Fpcw, X86_FPCW },
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{ g_Fpsw, X86_FPSW },
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{ g_Fptw, X86_FPTW },
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{ g_St0, X86_ST0 },
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{ g_St1, X86_ST1 },
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{ g_St2, X86_ST2 },
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{ g_St3, X86_ST3 },
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{ g_St4, X86_ST4 },
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{ g_St5, X86_ST5 },
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{ g_St6, X86_ST6 },
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{ g_St7, X86_ST7 },
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{ g_Mm0, X86_MM0 },
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{ g_Mm1, X86_MM1 },
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{ g_Mm2, X86_MM2 },
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{ g_Mm3, X86_MM3 },
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{ g_Mm4, X86_MM4 },
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{ g_Mm5, X86_MM5 },
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{ g_Mm6, X86_MM6 },
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{ g_Mm7, X86_MM7 },
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{ g_Mxcsr, X86_MXCSR},
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{ g_Xmm0, X86_XMM0 },
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{ g_Xmm1, X86_XMM1 },
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{ g_Xmm2, X86_XMM2 },
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{ g_Xmm3, X86_XMM3 },
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{ g_Xmm4, X86_XMM4 },
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{ g_Xmm5, X86_XMM5 },
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{ g_Xmm6, X86_XMM6 },
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{ g_Xmm7, X86_XMM7 },
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{ g_Iopl, X86_IOPL },
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{ g_Of, X86_OF },
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{ g_Df, X86_DF },
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{ g_If, X86_IF },
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{ g_Tf, X86_TF },
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{ g_Sf, X86_SF },
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{ g_Zf, X86_ZF },
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{ g_Af, X86_AF },
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{ g_Pf, X86_PF },
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{ g_Cf, X86_CF },
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{ g_Vip, X86_VIP },
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{ g_Vif, X86_VIF },
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{ NULL, REG_ERROR },
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};
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REGDEF g_X86KernelReg[] =
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{
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{ g_Cr0, X86_CR0 },
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{ g_Cr2, X86_CR2 },
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{ g_Cr3, X86_CR3 },
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{ g_Cr4, X86_CR4 },
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{ g_Gdtr, X86_GDTR },
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{ g_Gdtl, X86_GDTL },
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{ g_Idtr, X86_IDTR },
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{ g_Idtl, X86_IDTL },
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{ g_Tr, X86_TR },
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{ g_Ldtr, X86_LDTR },
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{ NULL, REG_ERROR },
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};
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REGSUBDEF g_X86SubDefs[] =
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{
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{ X86_DI, X86_EDI, 0, 0xffff }, // DI register
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{ X86_SI, X86_ESI, 0, 0xffff }, // SI register
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{ X86_BX, X86_EBX, 0, 0xffff }, // BX register
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{ X86_DX, X86_EDX, 0, 0xffff }, // DX register
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{ X86_CX, X86_ECX, 0, 0xffff }, // CX register
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{ X86_AX, X86_EAX, 0, 0xffff }, // AX register
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{ X86_BP, X86_EBP, 0, 0xffff }, // BP register
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{ X86_IP, X86_EIP, 0, 0xffff }, // IP register
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{ X86_FL, X86_EFL, 0, 0xffff }, // FL register
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{ X86_SP, X86_ESP, 0, 0xffff }, // SP register
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{ X86_BL, X86_EBX, 0, 0xff }, // BL register
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{ X86_DL, X86_EDX, 0, 0xff }, // DL register
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{ X86_CL, X86_ECX, 0, 0xff }, // CL register
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{ X86_AL, X86_EAX, 0, 0xff }, // AL register
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{ X86_BH, X86_EBX, 8, 0xff }, // BH register
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{ X86_DH, X86_EDX, 8, 0xff }, // DH register
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{ X86_CH, X86_ECX, 8, 0xff }, // CH register
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{ X86_AH, X86_EAX, 8, 0xff }, // AH register
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{ X86_IOPL, X86_EFL,12, 3 }, // IOPL level value
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{ X86_OF, X86_EFL,11, 1 }, // OF (overflow flag)
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{ X86_DF, X86_EFL,10, 1 }, // DF (direction flag)
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{ X86_IF, X86_EFL, 9, 1 }, // IF (interrupt enable flag)
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{ X86_TF, X86_EFL, 8, 1 }, // TF (trace flag)
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{ X86_SF, X86_EFL, 7, 1 }, // SF (sign flag)
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{ X86_ZF, X86_EFL, 6, 1 }, // ZF (zero flag)
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{ X86_AF, X86_EFL, 4, 1 }, // AF (aux carry flag)
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{ X86_PF, X86_EFL, 2, 1 }, // PF (parity flag)
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{ X86_CF, X86_EFL, 0, 1 }, // CF (carry flag)
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{ X86_VIP, X86_EFL,20, 1 }, // VIP (virtual interrupt pending)
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{ X86_VIF, X86_EFL,19, 1 }, // VIF (virtual interrupt flag)
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{ REG_ERROR, REG_ERROR, 0, 0 }
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};
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RegisterGroup g_X86BaseGroup =
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{
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NULL, 0, g_X86Defs, g_X86SubDefs, g_X86AllExtraDesc
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};
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RegisterGroup g_X86KernelGroup =
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{
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NULL, 0, g_X86KernelReg, NULL, g_X86KernelExtraDesc
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};
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// First ExecTypes entry must be the actual processor type.
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ULONG g_X86ExecTypes[] =
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{
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IMAGE_FILE_MACHINE_I386
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};
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X86MachineInfo g_X86Machine;
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HRESULT
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X86MachineInfo::InitializeConstants(void)
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{
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m_FullName = "x86 compatible";
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m_AbbrevName = "x86";
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m_PageSize = X86_PAGE_SIZE;
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m_PageShift = X86_PAGE_SHIFT;
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m_NumExecTypes = 1;
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m_ExecTypes = g_X86ExecTypes;
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m_Ptr64 = FALSE;
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m_AllMask = REGALL_INT32 | REGALL_SEGREG,
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m_MaxDataBreakpoints = 4;
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m_SymPrefix = NULL;
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m_SupportsBranchTrace = FALSE;
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return MachineInfo::InitializeConstants();
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}
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HRESULT
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X86MachineInfo::InitializeForTarget(void)
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{
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m_Groups = &g_X86BaseGroup;
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g_X86BaseGroup.Next = NULL;
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if (IS_KERNEL_TARGET())
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{
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g_X86BaseGroup.Next = &g_X86KernelGroup;
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}
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m_OffsetPrcbProcessorState =
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FIELD_OFFSET(X86_PARTIAL_KPRCB, ProcessorState);
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m_OffsetPrcbNumber =
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FIELD_OFFSET(X86_PARTIAL_KPRCB, Number);
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m_TriagePrcbOffset = EXTEND64(X86_TRIAGE_PRCB_ADDRESS);
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if (g_SystemVersion > NT_SVER_NT4)
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{
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m_SizePrcb = X86_NT5_KPRCB_SIZE;
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}
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else
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{
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m_SizePrcb = X86_NT4_KPRCB_SIZE;
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}
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m_OffsetKThreadApcProcess =
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FIELD_OFFSET(CROSS_PLATFORM_THREAD, X86Thread.ApcState.Process);
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m_OffsetKThreadTeb =
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FIELD_OFFSET(CROSS_PLATFORM_THREAD, X86Thread.Teb);
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m_OffsetKThreadInitialStack =
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FIELD_OFFSET(CROSS_PLATFORM_THREAD, X86Thread.InitialStack);
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m_OffsetEprocessPeb = g_SystemVersion > NT_SVER_NT4 ?
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X86_PEB_IN_EPROCESS : X86_NT4_PEB_IN_EPROCESS;
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m_OffsetEprocessDirectoryTableBase =
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X86_DIRECTORY_TABLE_BASE_IN_EPROCESS;
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if (g_TargetBuildNumber > 2407)
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{
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m_OffsetKThreadNextProcessor = X86_NT51_KTHREAD_NEXTPROCESSOR_OFFSET;
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}
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else if (g_TargetBuildNumber > 2230)
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{
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m_OffsetKThreadNextProcessor = X86_2230_KTHREAD_NEXTPROCESSOR_OFFSET;
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}
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else
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{
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m_OffsetKThreadNextProcessor = X86_KTHREAD_NEXTPROCESSOR_OFFSET;
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}
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if (g_SystemVersion > NT_SVER_NT4)
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{
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m_SizeTargetContext = sizeof(X86_NT5_CONTEXT);
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m_OffsetTargetContextFlags =
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FIELD_OFFSET(X86_NT5_CONTEXT, ContextFlags);
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}
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else
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{
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m_SizeTargetContext = sizeof(X86_CONTEXT);
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m_OffsetTargetContextFlags =
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FIELD_OFFSET(X86_CONTEXT, ContextFlags);
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}
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m_SizeCanonicalContext = sizeof(X86_NT5_CONTEXT);
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m_SverCanonicalContext = NT_SVER_W2K;
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m_SizeControlReport = sizeof(X86_DBGKD_CONTROL_REPORT);
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if (g_TargetBuildNumber > 2407)
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{
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m_SizeEThread = X86_NT51_ETHREAD_SIZE;
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}
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else
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{
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m_SizeEThread = X86_ETHREAD_SIZE;
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}
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m_SizeEProcess = g_SystemVersion > NT_SVER_W2K ?
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X86_NT51_EPROCESS_SIZE : X86_NT5_EPROCESS_SIZE;
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m_OffsetSpecialRegisters = m_SizeTargetContext;
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m_SizeKspecialRegisters = sizeof(X86_KSPECIAL_REGISTERS);
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m_SizePartialKThread = sizeof(X86_THREAD);
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m_SharedUserDataOffset = IS_KERNEL_TARGET() ?
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EXTEND64(X86_KI_USER_SHARED_DATA) : MM_SHARED_USER_DATA_VA;
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return MachineInfo::InitializeForTarget();
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}
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HRESULT
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X86MachineInfo::InitializeForProcessor(void)
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{
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if (!strcmp(g_InitProcessorId.X86.VendorString, "GenuineIntel"))
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{
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// Branch trace support was added for the Pentium Pro.
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m_SupportsBranchTrace = g_InitProcessorId.X86.Family >= 6;
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}
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return MachineInfo::InitializeForProcessor();
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}
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void
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X86MachineInfo::
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InitializeContext(ULONG64 Pc,
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PDBGKD_ANY_CONTROL_REPORT ControlReport)
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{
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ULONG Pc32 = (ULONG)Pc;
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m_Context.X86Nt5Context.Eip = Pc32;
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m_ContextState = Pc32 ? MCTX_PC : MCTX_NONE;
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if (ControlReport != NULL)
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{
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BpOut("InitializeContext(%d) DR6 %X DR7 %X\n",
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g_RegContextProcessor, ControlReport->X86ControlReport.Dr6,
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ControlReport->X86ControlReport.Dr7);
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m_Context.X86Nt5Context.Dr6 = ControlReport->X86ControlReport.Dr6;
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m_Context.X86Nt5Context.Dr7 = ControlReport->X86ControlReport.Dr7;
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m_ContextState = MCTX_DR67_REPORT;
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if (ControlReport->X86ControlReport.ReportFlags &
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X86_REPORT_INCLUDES_SEGS)
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{
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//
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// This is for backwards compatibility - older kernels
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// won't pass these registers in the report record.
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//
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m_Context.X86Nt5Context.SegCs =
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ControlReport->X86ControlReport.SegCs;
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m_Context.X86Nt5Context.SegDs =
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ControlReport->X86ControlReport.SegDs;
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m_Context.X86Nt5Context.SegEs =
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ControlReport->X86ControlReport.SegEs;
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m_Context.X86Nt5Context.SegFs =
|
|
ControlReport->X86ControlReport.SegFs;
|
|
m_Context.X86Nt5Context.EFlags =
|
|
ControlReport->X86ControlReport.EFlags;
|
|
m_ContextState = MCTX_REPORT;
|
|
}
|
|
}
|
|
|
|
if (!IS_CONTEXT_POSSIBLE())
|
|
{
|
|
g_X86InVm86 = FALSE;
|
|
g_X86InCode16 = FALSE;
|
|
}
|
|
else
|
|
{
|
|
// Check whether we're currently in V86 mode or 16-bit code.
|
|
g_X86InVm86 = X86_IS_VM86(GetIntReg(X86_EFL));
|
|
if (IS_KERNEL_TARGET() && !g_X86InVm86)
|
|
{
|
|
if (ControlReport == NULL ||
|
|
(ControlReport->X86ControlReport.ReportFlags &
|
|
X86_REPORT_STANDARD_CS) == 0)
|
|
{
|
|
DESCRIPTOR64 Desc;
|
|
|
|
if (GetSegRegDescriptor(SEGREG_CODE, &Desc) != S_OK)
|
|
{
|
|
WarnOut("CS descriptor lookup failed\n");
|
|
g_X86InCode16 = FALSE;
|
|
}
|
|
else
|
|
{
|
|
g_X86InCode16 = (Desc.Flags & X86_DESC_DEFAULT_BIG) == 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
g_X86InCode16 = FALSE;
|
|
|
|
// We're in a standard code segment so cache
|
|
// a default descriptor for CS to avoid further
|
|
// CS lookups.
|
|
EmulateNtSelDescriptor(this, m_Context.X86Nt5Context.SegCs,
|
|
&m_SegRegDesc[SEGREG_CODE]);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add instructions to cache only if we're in 32-bit flat mode.
|
|
if (Pc32 && ControlReport != NULL &&
|
|
!g_X86InVm86 && !g_X86InCode16)
|
|
{
|
|
CacheReportInstructions
|
|
(Pc, ControlReport->X86ControlReport.InstructionCount,
|
|
ControlReport->X86ControlReport.InstructionStream);
|
|
}
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::KdGetContextState(ULONG State)
|
|
{
|
|
HRESULT Status;
|
|
|
|
if (State >= MCTX_CONTEXT && m_ContextState < MCTX_CONTEXT)
|
|
{
|
|
Status = g_Target->GetContext(g_RegContextThread->Handle, &m_Context);
|
|
if (Status != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
// XXX drewb - Temporary log to try and catch some
|
|
// SET_OF_INVALID_CONTEXT bugchecks occurring randomly on x86.
|
|
*g_EspLogCur++ = g_RegContextProcessor | 0x80000000;
|
|
*g_EspLogCur++ = m_Context.X86Nt5Context.Esp;
|
|
if (g_EspLogCur >= g_EspLog + 64)
|
|
{
|
|
g_EspLogCur = g_EspLog;
|
|
}
|
|
|
|
m_ContextState = MCTX_CONTEXT;
|
|
}
|
|
|
|
if (State >= MCTX_FULL && m_ContextState < MCTX_FULL)
|
|
{
|
|
Status = g_Target->GetTargetSpecialRegisters
|
|
(g_RegContextThread->Handle, (PCROSS_PLATFORM_KSPECIAL_REGISTERS)
|
|
&m_SpecialRegContext);
|
|
if (Status != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
Status = g_Target->GetTargetSegRegDescriptors
|
|
(g_RegContextThread->Handle, 0, SEGREG_COUNT, m_SegRegDesc);
|
|
if (Status != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
m_ContextState = MCTX_FULL;
|
|
KdSetSpecialRegistersInContext();
|
|
|
|
BpOut("GetContextState(%d) DR6 %X DR7 %X DR0 %X\n",
|
|
g_RegContextProcessor, m_SpecialRegContext.KernelDr6,
|
|
m_SpecialRegContext.KernelDr7, m_SpecialRegContext.KernelDr0);
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::KdSetContext(void)
|
|
{
|
|
HRESULT Status;
|
|
|
|
// XXX drewb - Temporary log to try and catch some
|
|
// SET_OF_INVALID_CONTEXT bugchecks occurring randomly on x86.
|
|
*g_EspLogCur++ = g_RegContextProcessor | 0xC0000000;
|
|
*g_EspLogCur++ = m_Context.X86Nt5Context.Esp;
|
|
if (g_EspLogCur >= g_EspLog + 64)
|
|
{
|
|
g_EspLogCur = g_EspLog;
|
|
}
|
|
|
|
Status = g_Target->SetContext(g_RegContextThread->Handle, &m_Context);
|
|
if (Status != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
KdGetSpecialRegistersFromContext();
|
|
Status = g_Target->SetTargetSpecialRegisters
|
|
(g_RegContextThread->Handle, (PCROSS_PLATFORM_KSPECIAL_REGISTERS)
|
|
&m_SpecialRegContext);
|
|
if (Status != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
BpOut("SetContext(%d) DR6 %X DR7 %X DR0 %X\n",
|
|
g_RegContextProcessor, m_SpecialRegContext.KernelDr6,
|
|
m_SpecialRegContext.KernelDr7, m_SpecialRegContext.KernelDr0);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::ConvertContextFrom(PCROSS_PLATFORM_CONTEXT Context,
|
|
ULONG FromSver, ULONG FromSize, PVOID From)
|
|
{
|
|
if (FromSver <= NT_SVER_NT4)
|
|
{
|
|
if (FromSize < sizeof(X86_CONTEXT))
|
|
{
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
memcpy(Context, From, sizeof(X86_CONTEXT));
|
|
ZeroMemory(Context->X86Nt5Context.ExtendedRegisters,
|
|
sizeof(Context->X86Nt5Context.ExtendedRegisters));
|
|
}
|
|
else if (FromSize >= sizeof(X86_NT5_CONTEXT))
|
|
{
|
|
memcpy(Context, From, sizeof(X86_NT5_CONTEXT));
|
|
}
|
|
else
|
|
{
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::ConvertContextTo(PCROSS_PLATFORM_CONTEXT Context,
|
|
ULONG ToSver, ULONG ToSize, PVOID To)
|
|
{
|
|
if (ToSver <= NT_SVER_NT4)
|
|
{
|
|
if (ToSize < sizeof(X86_CONTEXT))
|
|
{
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
memcpy(To, Context, sizeof(X86_CONTEXT));
|
|
}
|
|
else if (ToSize >= sizeof(X86_NT5_CONTEXT))
|
|
{
|
|
memcpy(To, Context, sizeof(X86_NT5_CONTEXT));
|
|
}
|
|
else
|
|
{
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::InitializeContextFlags(PCROSS_PLATFORM_CONTEXT Context,
|
|
ULONG Version)
|
|
{
|
|
ULONG ContextFlags;
|
|
|
|
ContextFlags = VDMCONTEXT_CONTROL | VDMCONTEXT_INTEGER |
|
|
VDMCONTEXT_SEGMENTS | VDMCONTEXT_FLOATING_POINT;
|
|
if (IS_USER_TARGET())
|
|
{
|
|
ContextFlags |= VDMCONTEXT_DEBUG_REGISTERS;
|
|
}
|
|
|
|
if (Version <= NT_SVER_NT4)
|
|
{
|
|
Context->X86Context.ContextFlags = ContextFlags;
|
|
}
|
|
else
|
|
{
|
|
Context->X86Nt5Context.ContextFlags = ContextFlags |
|
|
VDMCONTEXT_EXTENDED_REGISTERS;
|
|
}
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::GetContextFromThreadStack(ULONG64 ThreadBase,
|
|
PCROSS_PLATFORM_THREAD Thread,
|
|
PCROSS_PLATFORM_CONTEXT Context,
|
|
PDEBUG_STACK_FRAME Frame,
|
|
PULONG RunningOnProc)
|
|
{
|
|
HRESULT Status;
|
|
UCHAR Proc;
|
|
|
|
//
|
|
// Check to see if the thread is currently running.
|
|
//
|
|
|
|
if (Thread->X86Thread.State == 2)
|
|
{
|
|
if ((Status = g_Target->ReadAllVirtual
|
|
(ThreadBase + m_OffsetKThreadNextProcessor,
|
|
&Proc, sizeof(Proc))) != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
*RunningOnProc = Proc;
|
|
return S_FALSE;
|
|
}
|
|
|
|
//
|
|
// The thread isn't running so read its stored context information.
|
|
//
|
|
|
|
X86_KSWITCHFRAME SwitchFrame;
|
|
|
|
if ((Status = g_Target->ReadAllVirtual(Thread->X86Thread.KernelStack,
|
|
&SwitchFrame,
|
|
sizeof(SwitchFrame))) != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
Frame->InstructionOffset = EXTEND64(SwitchFrame.RetAddr);
|
|
Frame->StackOffset =
|
|
Thread->X86Thread.KernelStack + sizeof(SwitchFrame);
|
|
|
|
if ((Status = g_Target->ReadPointer(this, Frame->StackOffset,
|
|
&Frame->FrameOffset)) != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
Context->X86Context.Ebp = (ULONG)Frame->FrameOffset;
|
|
Context->X86Context.Esp = (ULONG)Frame->StackOffset;
|
|
// Fill the segments in from current information
|
|
// instead of just leaving them blank.
|
|
Context->X86Context.SegSs = GetIntReg(X86_SS);
|
|
Context->X86Context.SegCs = GetIntReg(X86_CS);
|
|
Context->X86Context.Eip = (ULONG)Frame->InstructionOffset;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::GetExdiContext(IUnknown* Exdi, PEXDI_CONTEXT Context)
|
|
{
|
|
// Always ask for everything.
|
|
Context->X86Context.RegGroupSelection.fSegmentRegs = TRUE;
|
|
Context->X86Context.RegGroupSelection.fControlRegs = TRUE;
|
|
Context->X86Context.RegGroupSelection.fIntegerRegs = TRUE;
|
|
Context->X86Context.RegGroupSelection.fFloatingPointRegs = TRUE;
|
|
Context->X86Context.RegGroupSelection.fDebugRegs = TRUE;
|
|
return ((IeXdiX86Context*)Exdi)->GetContext(&Context->X86Context);
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::SetExdiContext(IUnknown* Exdi, PEXDI_CONTEXT Context)
|
|
{
|
|
// Don't change the existing group selections on the assumption
|
|
// that there was a full get prior to any modifications so
|
|
// all groups are valid.
|
|
return ((IeXdiX86Context*)Exdi)->SetContext(Context->X86Context);
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::ConvertExdiContextFromContext(PCROSS_PLATFORM_CONTEXT Context,
|
|
PEXDI_CONTEXT ExdiContext)
|
|
{
|
|
if (Context->X86Nt5Context.ContextFlags & VDMCONTEXT_SEGMENTS)
|
|
{
|
|
ExdiContext->X86Context.SegGs = (USHORT)Context->X86Nt5Context.SegGs;
|
|
ExdiContext->X86Context.SegFs = (USHORT)Context->X86Nt5Context.SegFs;
|
|
ExdiContext->X86Context.SegEs = (USHORT)Context->X86Nt5Context.SegEs;
|
|
ExdiContext->X86Context.SegDs = (USHORT)Context->X86Nt5Context.SegDs;
|
|
}
|
|
|
|
if (Context->X86Nt5Context.ContextFlags & VDMCONTEXT_CONTROL)
|
|
{
|
|
ExdiContext->X86Context.Ebp = Context->X86Nt5Context.Ebp;
|
|
ExdiContext->X86Context.Eip = Context->X86Nt5Context.Eip;
|
|
ExdiContext->X86Context.SegCs = (USHORT)Context->X86Nt5Context.SegCs;
|
|
ExdiContext->X86Context.EFlags = Context->X86Nt5Context.EFlags;
|
|
ExdiContext->X86Context.Esp = Context->X86Nt5Context.Esp;
|
|
ExdiContext->X86Context.SegSs = (USHORT)Context->X86Nt5Context.SegSs;
|
|
}
|
|
|
|
if (Context->X86Nt5Context.ContextFlags & VDMCONTEXT_INTEGER)
|
|
{
|
|
ExdiContext->X86Context.Eax = Context->X86Nt5Context.Eax;
|
|
ExdiContext->X86Context.Ebx = Context->X86Nt5Context.Ebx;
|
|
ExdiContext->X86Context.Ecx = Context->X86Nt5Context.Ecx;
|
|
ExdiContext->X86Context.Edx = Context->X86Nt5Context.Edx;
|
|
ExdiContext->X86Context.Esi = Context->X86Nt5Context.Esi;
|
|
ExdiContext->X86Context.Edi = Context->X86Nt5Context.Edi;
|
|
}
|
|
|
|
if (Context->X86Nt5Context.ContextFlags & VDMCONTEXT_FLOATING_POINT)
|
|
{
|
|
C_ASSERT(sizeof(X86_FLOATING_SAVE_AREA) ==
|
|
FIELD_OFFSET(CONTEXT_X86, Dr0) -
|
|
FIELD_OFFSET(CONTEXT_X86, ControlWord));
|
|
memcpy(&ExdiContext->X86Context.ControlWord,
|
|
&Context->X86Nt5Context.FloatSave,
|
|
sizeof(X86_FLOATING_SAVE_AREA));
|
|
}
|
|
|
|
if (Context->X86Nt5Context.ContextFlags & VDMCONTEXT_DEBUG_REGISTERS)
|
|
{
|
|
ExdiContext->X86Context.Dr0 = Context->X86Nt5Context.Dr0;
|
|
ExdiContext->X86Context.Dr1 = Context->X86Nt5Context.Dr1;
|
|
ExdiContext->X86Context.Dr2 = Context->X86Nt5Context.Dr2;
|
|
ExdiContext->X86Context.Dr3 = Context->X86Nt5Context.Dr3;
|
|
ExdiContext->X86Context.Dr6 = Context->X86Nt5Context.Dr6;
|
|
ExdiContext->X86Context.Dr7 = Context->X86Nt5Context.Dr7;
|
|
}
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::ConvertExdiContextToContext(PEXDI_CONTEXT ExdiContext,
|
|
PCROSS_PLATFORM_CONTEXT Context)
|
|
{
|
|
Context->X86Nt5Context.SegCs = ExdiContext->X86Context.SegCs;
|
|
Context->X86Nt5Context.SegSs = ExdiContext->X86Context.SegSs;
|
|
Context->X86Nt5Context.SegGs = ExdiContext->X86Context.SegGs;
|
|
Context->X86Nt5Context.SegFs = ExdiContext->X86Context.SegFs;
|
|
Context->X86Nt5Context.SegEs = ExdiContext->X86Context.SegEs;
|
|
Context->X86Nt5Context.SegDs = ExdiContext->X86Context.SegDs;
|
|
|
|
Context->X86Nt5Context.EFlags = ExdiContext->X86Context.EFlags;
|
|
Context->X86Nt5Context.Ebp = ExdiContext->X86Context.Ebp;
|
|
Context->X86Nt5Context.Eip = ExdiContext->X86Context.Eip;
|
|
Context->X86Nt5Context.Esp = ExdiContext->X86Context.Esp;
|
|
|
|
Context->X86Nt5Context.Eax = ExdiContext->X86Context.Eax;
|
|
Context->X86Nt5Context.Ebx = ExdiContext->X86Context.Ebx;
|
|
Context->X86Nt5Context.Ecx = ExdiContext->X86Context.Ecx;
|
|
Context->X86Nt5Context.Edx = ExdiContext->X86Context.Edx;
|
|
Context->X86Nt5Context.Esi = ExdiContext->X86Context.Esi;
|
|
Context->X86Nt5Context.Edi = ExdiContext->X86Context.Edi;
|
|
|
|
C_ASSERT(sizeof(X86_FLOATING_SAVE_AREA) ==
|
|
FIELD_OFFSET(CONTEXT_X86, Dr0) -
|
|
FIELD_OFFSET(CONTEXT_X86, ControlWord));
|
|
memcpy(&Context->X86Nt5Context.FloatSave,
|
|
&ExdiContext->X86Context.ControlWord,
|
|
sizeof(X86_FLOATING_SAVE_AREA));
|
|
|
|
Context->X86Nt5Context.Dr0 = ExdiContext->X86Context.Dr0;
|
|
Context->X86Nt5Context.Dr1 = ExdiContext->X86Context.Dr1;
|
|
Context->X86Nt5Context.Dr2 = ExdiContext->X86Context.Dr2;
|
|
Context->X86Nt5Context.Dr3 = ExdiContext->X86Context.Dr3;
|
|
Context->X86Nt5Context.Dr6 = ExdiContext->X86Context.Dr6;
|
|
Context->X86Nt5Context.Dr7 = ExdiContext->X86Context.Dr7;
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::ConvertExdiContextToSegDescs(PEXDI_CONTEXT ExdiContext,
|
|
ULONG Start, ULONG Count,
|
|
PDESCRIPTOR64 Descs)
|
|
{
|
|
// XXX drewb - Temporary hack to report boot-time 16-bit
|
|
// segment state. The new x86 context should report
|
|
// segment descriptors.
|
|
while (Count-- > 0)
|
|
{
|
|
ULONG Type;
|
|
|
|
if (Start == SEGREG_CODE)
|
|
{
|
|
Descs->Base = EXTEND64(0xffff0000);
|
|
Type = 0x13;
|
|
}
|
|
else
|
|
{
|
|
Descs->Base = 0;
|
|
Type = 0x1b;
|
|
}
|
|
|
|
Descs->Limit = 0xfffff;
|
|
Descs->Flags = X86_DESC_PRESENT | Type;
|
|
Descs++;
|
|
|
|
Start++;
|
|
}
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::ConvertExdiContextFromSpecial
|
|
(PCROSS_PLATFORM_KSPECIAL_REGISTERS Special,
|
|
PEXDI_CONTEXT ExdiContext)
|
|
{
|
|
// XXX drewb - Implement when the new x86 context is
|
|
// available and provides the appropriate information.
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::ConvertExdiContextToSpecial
|
|
(PEXDI_CONTEXT ExdiContext,
|
|
PCROSS_PLATFORM_KSPECIAL_REGISTERS Special)
|
|
{
|
|
// XXX drewb - Implement when the new x86 context is
|
|
// available and provides the appropriate information.
|
|
}
|
|
|
|
int
|
|
X86MachineInfo::GetType(ULONG regnum)
|
|
{
|
|
if (regnum >= X86_MM_FIRST && regnum <= X86_MM_LAST)
|
|
{
|
|
return REGVAL_INT64;
|
|
}
|
|
else if (regnum >= X86_XMM_FIRST && regnum <= X86_XMM_LAST)
|
|
{
|
|
return REGVAL_VECTOR128;
|
|
}
|
|
else if (regnum >= X86_ST_FIRST && regnum <= X86_ST_LAST)
|
|
{
|
|
return REGVAL_FLOAT10;
|
|
}
|
|
else if (regnum < X86_FLAGBASE)
|
|
{
|
|
return REGVAL_INT32;
|
|
}
|
|
else
|
|
{
|
|
return REGVAL_SUB32;
|
|
}
|
|
}
|
|
|
|
/*** X86GetVal - get register value
|
|
*
|
|
* Purpose:
|
|
* Return the value of the specified register.
|
|
*
|
|
* Input:
|
|
* regnum - register specification
|
|
*
|
|
* Returns:
|
|
* Value of register.
|
|
*
|
|
*************************************************************************/
|
|
|
|
BOOL
|
|
X86MachineInfo::GetVal (
|
|
ULONG regnum,
|
|
REGVAL *val
|
|
)
|
|
{
|
|
if (regnum >= X86_MM_FIRST && regnum <= X86_MM_LAST)
|
|
{
|
|
val->type = REGVAL_VECTOR64;
|
|
GetMmxReg(regnum, val);
|
|
}
|
|
else if (regnum >= X86_XMM_FIRST && regnum <= X86_XMM_LAST)
|
|
{
|
|
if (GetContextState(MCTX_CONTEXT) != S_OK)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
val->type = REGVAL_VECTOR128;
|
|
memcpy(val->bytes, m_Context.X86Nt5Context.FxSave.Reserved3 +
|
|
(regnum - X86_XMM_FIRST) * 16, 16);
|
|
}
|
|
else if (regnum >= X86_ST_FIRST && regnum <= X86_ST_LAST)
|
|
{
|
|
val->type = REGVAL_FLOAT10;
|
|
GetFloatReg(regnum, val);
|
|
}
|
|
else if (regnum < X86_FLAGBASE)
|
|
{
|
|
val->type = REGVAL_INT32;
|
|
val->i64 = (ULONG64)(LONG64)(LONG)GetIntReg(regnum);
|
|
}
|
|
else
|
|
{
|
|
ErrOut("X86MachineInfo::GetVal: "
|
|
"unknown register %lx requested\n", regnum);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*** X86SetVal - set register value
|
|
*
|
|
* Purpose:
|
|
* Set the value of the specified register.
|
|
*
|
|
* Input:
|
|
* regnum - register specification
|
|
* val - new register value
|
|
*
|
|
* Output:
|
|
* None.
|
|
*
|
|
* Notes:
|
|
*
|
|
*************************************************************************/
|
|
|
|
BOOL
|
|
X86MachineInfo::SetVal (ULONG regnum, REGVAL *val)
|
|
{
|
|
if (m_ContextIsReadOnly)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
if (regnum >= X86_FLAGBASE)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
// Optimize away some common cases where registers are
|
|
// set to their current value.
|
|
if ((m_ContextState >= MCTX_PC && regnum == X86_EIP &&
|
|
val->i32 == m_Context.X86Nt5Context.Eip) ||
|
|
(((m_ContextState >= MCTX_DR67_REPORT &&
|
|
m_ContextState <= MCTX_REPORT) ||
|
|
m_ContextState >= MCTX_FULL) && regnum == X86_DR7 &&
|
|
val->i32 == m_Context.X86Nt5Context.Dr7))
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
if (GetContextState(MCTX_DIRTY) != S_OK)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
if (regnum >= X86_MM_FIRST && regnum <= X86_MM_LAST)
|
|
{
|
|
*(ULONG64 UNALIGNED *)GetMmxRegSlot(regnum) = val->i64;
|
|
goto Notify;
|
|
}
|
|
else if (regnum >= X86_XMM_FIRST && regnum <= X86_XMM_LAST)
|
|
{
|
|
memcpy(m_Context.X86Nt5Context.FxSave.Reserved3 +
|
|
(regnum - X86_XMM_FIRST) * 16, val->bytes, 16);
|
|
goto Notify;
|
|
}
|
|
else if (regnum >= X86_ST_FIRST && regnum <= X86_ST_LAST)
|
|
{
|
|
memcpy(m_Context.X86Nt5Context.FloatSave.RegisterArea +
|
|
10 * (regnum - X86_ST_FIRST), val->f10, sizeof(val->f10));
|
|
goto Notify;
|
|
}
|
|
|
|
BOOL Recognized;
|
|
|
|
Recognized = TRUE;
|
|
|
|
switch (regnum)
|
|
{
|
|
case X86_GS:
|
|
m_Context.X86Nt5Context.SegGs = val->i16;
|
|
m_SegRegDesc[SEGREG_GS].Flags = SEGDESC_INVALID;
|
|
break;
|
|
case X86_FS:
|
|
m_Context.X86Nt5Context.SegFs = val->i16;
|
|
m_SegRegDesc[SEGREG_FS].Flags = SEGDESC_INVALID;
|
|
break;
|
|
case X86_ES:
|
|
m_Context.X86Nt5Context.SegEs = val->i16;
|
|
m_SegRegDesc[SEGREG_ES].Flags = SEGDESC_INVALID;
|
|
break;
|
|
case X86_DS:
|
|
m_Context.X86Nt5Context.SegDs = val->i16;
|
|
m_SegRegDesc[SEGREG_DATA].Flags = SEGDESC_INVALID;
|
|
break;
|
|
case X86_EDI:
|
|
m_Context.X86Nt5Context.Edi = val->i32;
|
|
break;
|
|
case X86_ESI:
|
|
m_Context.X86Nt5Context.Esi = val->i32;
|
|
break;
|
|
case X86_EBX:
|
|
m_Context.X86Nt5Context.Ebx = val->i32;
|
|
break;
|
|
case X86_EDX:
|
|
m_Context.X86Nt5Context.Edx = val->i32;
|
|
break;
|
|
case X86_ECX:
|
|
m_Context.X86Nt5Context.Ecx = val->i32;
|
|
break;
|
|
case X86_EAX:
|
|
m_Context.X86Nt5Context.Eax = val->i32;
|
|
break;
|
|
case X86_EBP:
|
|
m_Context.X86Nt5Context.Ebp = val->i32;
|
|
break;
|
|
case X86_EIP:
|
|
m_Context.X86Nt5Context.Eip = val->i32;
|
|
break;
|
|
case X86_CS:
|
|
m_Context.X86Nt5Context.SegCs = val->i16;
|
|
m_SegRegDesc[SEGREG_CODE].Flags = SEGDESC_INVALID;
|
|
break;
|
|
case X86_EFL:
|
|
if (IS_KERNEL_TARGET())
|
|
{
|
|
// leave TF clear
|
|
m_Context.X86Nt5Context.EFlags = val->i32 & ~0x100;
|
|
}
|
|
else
|
|
{
|
|
// allow TF set
|
|
m_Context.X86Nt5Context.EFlags = val->i32;
|
|
}
|
|
break;
|
|
case X86_ESP:
|
|
m_Context.X86Nt5Context.Esp = val->i32;
|
|
break;
|
|
case X86_SS:
|
|
m_Context.X86Nt5Context.SegSs = val->i16;
|
|
m_SegRegDesc[SEGREG_STACK].Flags = SEGDESC_INVALID;
|
|
break;
|
|
|
|
case X86_DR0:
|
|
m_Context.X86Nt5Context.Dr0 = val->i32;
|
|
break;
|
|
case X86_DR1:
|
|
m_Context.X86Nt5Context.Dr1 = val->i32;
|
|
break;
|
|
case X86_DR2:
|
|
m_Context.X86Nt5Context.Dr2 = val->i32;
|
|
break;
|
|
case X86_DR3:
|
|
m_Context.X86Nt5Context.Dr3 = val->i32;
|
|
break;
|
|
case X86_DR6:
|
|
m_Context.X86Nt5Context.Dr6 = val->i32;
|
|
break;
|
|
case X86_DR7:
|
|
m_Context.X86Nt5Context.Dr7 = val->i32;
|
|
break;
|
|
|
|
case X86_FPCW:
|
|
m_Context.X86Nt5Context.FloatSave.ControlWord =
|
|
(m_Context.X86Nt5Context.FloatSave.ControlWord & 0xffff0000) |
|
|
(val->i32 & 0xffff);
|
|
break;
|
|
case X86_FPSW:
|
|
m_Context.X86Nt5Context.FloatSave.StatusWord =
|
|
(m_Context.X86Nt5Context.FloatSave.StatusWord & 0xffff0000) |
|
|
(val->i32 & 0xffff);
|
|
break;
|
|
case X86_FPTW:
|
|
m_Context.X86Nt5Context.FloatSave.TagWord =
|
|
(m_Context.X86Nt5Context.FloatSave.TagWord & 0xffff0000) |
|
|
(val->i32 & 0xffff);
|
|
break;
|
|
case X86_MXCSR:
|
|
m_Context.X86Nt5Context.FxSave.MXCsr = val->i32;
|
|
break;
|
|
default:
|
|
Recognized = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (!Recognized && IS_KERNEL_TARGET())
|
|
{
|
|
Recognized = TRUE;
|
|
|
|
switch(regnum)
|
|
{
|
|
case X86_CR0:
|
|
m_SpecialRegContext.Cr0 = val->i32;
|
|
break;
|
|
case X86_CR2:
|
|
m_SpecialRegContext.Cr2 = val->i32;
|
|
break;
|
|
case X86_CR3:
|
|
m_SpecialRegContext.Cr3 = val->i32;
|
|
break;
|
|
case X86_CR4:
|
|
m_SpecialRegContext.Cr4 = val->i32;
|
|
break;
|
|
case X86_GDTR:
|
|
m_SpecialRegContext.Gdtr.Base = val->i32;
|
|
break;
|
|
case X86_GDTL:
|
|
m_SpecialRegContext.Gdtr.Limit = (USHORT)val->i32;
|
|
break;
|
|
case X86_IDTR:
|
|
m_SpecialRegContext.Idtr.Base = val->i32;
|
|
break;
|
|
case X86_IDTL:
|
|
m_SpecialRegContext.Idtr.Limit = (USHORT)val->i32;
|
|
break;
|
|
case X86_TR:
|
|
m_SpecialRegContext.Tr = (USHORT)val->i32;
|
|
break;
|
|
case X86_LDTR:
|
|
m_SpecialRegContext.Ldtr = (USHORT)val->i32;
|
|
break;
|
|
|
|
default:
|
|
Recognized = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!Recognized)
|
|
{
|
|
ErrOut("X86MachineInfo::SetVal: "
|
|
"unknown register %lx requested\n", regnum);
|
|
return FALSE;
|
|
}
|
|
|
|
Notify:
|
|
NotifyChangeDebuggeeState(DEBUG_CDS_REGISTERS,
|
|
RegCountFromIndex(regnum));
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::GetPC (PADDR Address)
|
|
{
|
|
FormAddr(SEGREG_CODE, EXTEND64(GetIntReg(X86_EIP)),
|
|
FORM_CODE | FORM_SEGREG | X86_FORM_VM86(GetIntReg(X86_EFL)),
|
|
Address);
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::SetPC (PADDR paddr)
|
|
{
|
|
REGVAL val;
|
|
|
|
// We set the EIP to the offset (the non-translated value),
|
|
// because we may not be in "flat" mode !!!
|
|
|
|
val.type = REGVAL_INT32;
|
|
val.i32 = (ULONG)Off(*paddr);
|
|
SetVal(X86_EIP, &val);
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::GetFP(PADDR Addr)
|
|
{
|
|
FormAddr(SEGREG_STACK, EXTEND64(GetIntReg(X86_EBP)),
|
|
FORM_SEGREG | X86_FORM_VM86(GetIntReg(X86_EFL)), Addr);
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::GetSP(PADDR Addr)
|
|
{
|
|
FormAddr(SEGREG_STACK, EXTEND64(GetIntReg(X86_ESP)),
|
|
FORM_SEGREG | X86_FORM_VM86(GetIntReg(X86_EFL)), Addr);
|
|
}
|
|
|
|
ULONG64
|
|
X86MachineInfo::GetArgReg(void)
|
|
{
|
|
return (ULONG64)(LONG64)(LONG)GetIntReg(X86_EAX);
|
|
}
|
|
|
|
ULONG
|
|
X86MachineInfo::GetSegRegNum(ULONG SegReg)
|
|
{
|
|
switch(SegReg)
|
|
{
|
|
case SEGREG_CODE:
|
|
return X86_CS;
|
|
case SEGREG_DATA:
|
|
return X86_DS;
|
|
case SEGREG_STACK:
|
|
return X86_SS;
|
|
case SEGREG_ES:
|
|
return X86_ES;
|
|
case SEGREG_FS:
|
|
return X86_FS;
|
|
case SEGREG_GS:
|
|
return X86_GS;
|
|
case SEGREG_LDT:
|
|
return X86_LDTR;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::GetSegRegDescriptor(ULONG SegReg, PDESCRIPTOR64 Desc)
|
|
{
|
|
if (SegReg == SEGREG_GDT)
|
|
{
|
|
Desc->Base = EXTEND64(GetIntReg(X86_GDTR));
|
|
Desc->Limit = GetIntReg(X86_GDTL);
|
|
Desc->Flags = 0;
|
|
return S_OK;
|
|
}
|
|
|
|
// Check and see if we already have a cached descriptor.
|
|
if (m_SegRegDesc[SegReg].Flags != SEGDESC_INVALID)
|
|
{
|
|
*Desc = m_SegRegDesc[SegReg];
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT Status;
|
|
|
|
// Attempt to retrieve segment descriptors directly.
|
|
if ((Status = GetContextState(MCTX_FULL)) != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
// Check and see if we now have a cached descriptor.
|
|
if (m_SegRegDesc[SegReg].Flags != SEGDESC_INVALID)
|
|
{
|
|
*Desc = m_SegRegDesc[SegReg];
|
|
return S_OK;
|
|
}
|
|
|
|
//
|
|
// Direct information is not available so look things up
|
|
// in the descriptor tables.
|
|
//
|
|
|
|
ULONG RegNum = GetSegRegNum(SegReg);
|
|
if (RegNum == 0)
|
|
{
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
// Do a quick sanity test to prevent bad values
|
|
// from causing problems.
|
|
ULONG Selector = GetIntReg(RegNum);
|
|
if (SegReg == SEGREG_LDT && (Selector & 4))
|
|
{
|
|
// The ldtr selector says that it's an LDT selector,
|
|
// which is invalid. An LDT selector should always
|
|
// reference the GDT.
|
|
ErrOut("Invalid LDTR contents: %04X\n", Selector);
|
|
return E_FAIL;
|
|
}
|
|
|
|
return g_Target->GetSelDescriptor(this, g_RegContextThread->Handle,
|
|
Selector, Desc);
|
|
}
|
|
|
|
/*** X86OutputAll - output all registers and present instruction
|
|
*
|
|
* Purpose:
|
|
* To output the current register state of the processor.
|
|
* All integer registers are output as well as processor status
|
|
* registers. Important flag fields are also output separately.
|
|
*
|
|
* Input:
|
|
* Mask - Which information to display.
|
|
*
|
|
* Output:
|
|
* None.
|
|
*
|
|
*************************************************************************/
|
|
|
|
void
|
|
X86MachineInfo::OutputAll(ULONG Mask, ULONG OutMask)
|
|
{
|
|
if (GetContextState(MCTX_FULL) != S_OK)
|
|
{
|
|
ErrOut("Unable to retrieve register information\n");
|
|
return;
|
|
}
|
|
|
|
if (Mask & (REGALL_INT32 | REGALL_INT64))
|
|
{
|
|
ULONG efl;
|
|
|
|
MaskOut(OutMask, "eax=%08lx ebx=%08lx ecx=%08lx "
|
|
"edx=%08lx esi=%08lx edi=%08lx\n",
|
|
GetIntReg(X86_EAX),
|
|
GetIntReg(X86_EBX),
|
|
GetIntReg(X86_ECX),
|
|
GetIntReg(X86_EDX),
|
|
GetIntReg(X86_ESI),
|
|
GetIntReg(X86_EDI));
|
|
|
|
efl = GetIntReg(X86_EFL);
|
|
MaskOut(OutMask, "eip=%08lx esp=%08lx ebp=%08lx iopl=%1lx "
|
|
"%s %s %s %s %s %s %s %s %s %s\n",
|
|
GetIntReg(X86_EIP),
|
|
GetIntReg(X86_ESP),
|
|
GetIntReg(X86_EBP),
|
|
((efl >> X86_SHIFT_FLAGIOPL) & X86_BIT_FLAGIOPL),
|
|
(efl & X86_BIT_FLAGVIP) ? "vip" : " ",
|
|
(efl & X86_BIT_FLAGVIF) ? "vif" : " ",
|
|
(efl & X86_BIT_FLAGOF) ? "ov" : "nv",
|
|
(efl & X86_BIT_FLAGDF) ? "dn" : "up",
|
|
(efl & X86_BIT_FLAGIF) ? "ei" : "di",
|
|
(efl & X86_BIT_FLAGSF) ? "ng" : "pl",
|
|
(efl & X86_BIT_FLAGZF) ? "zr" : "nz",
|
|
(efl & X86_BIT_FLAGAF) ? "ac" : "na",
|
|
(efl & X86_BIT_FLAGPF) ? "po" : "pe",
|
|
(efl & X86_BIT_FLAGCF) ? "cy" : "nc");
|
|
}
|
|
|
|
if (Mask & REGALL_SEGREG)
|
|
{
|
|
MaskOut(OutMask, "cs=%04lx ss=%04lx ds=%04lx es=%04lx fs=%04lx "
|
|
"gs=%04lx efl=%08lx\n",
|
|
GetIntReg(X86_CS),
|
|
GetIntReg(X86_SS),
|
|
GetIntReg(X86_DS),
|
|
GetIntReg(X86_ES),
|
|
GetIntReg(X86_FS),
|
|
GetIntReg(X86_GS),
|
|
GetIntReg(X86_EFL));
|
|
}
|
|
|
|
if (Mask & REGALL_FLOAT)
|
|
{
|
|
ULONG i;
|
|
REGVAL val;
|
|
char buf[32];
|
|
|
|
MaskOut(OutMask, "fpcw=%04X fpsw=%04X fptw=%04X\n",
|
|
GetIntReg(X86_FPCW),
|
|
GetIntReg(X86_FPSW),
|
|
GetIntReg(X86_FPTW));
|
|
|
|
for (i = X86_ST_FIRST; i <= X86_ST_LAST; i++)
|
|
{
|
|
GetFloatReg(i, &val);
|
|
_uldtoa((_ULDOUBLE *)&val.f10, sizeof(buf), buf);
|
|
MaskOut(OutMask, "st%d=%s ", i - X86_ST_FIRST, buf);
|
|
i++;
|
|
GetFloatReg(i, &val);
|
|
_uldtoa((_ULDOUBLE *)&val.f10, sizeof(buf), buf);
|
|
MaskOut(OutMask, "st%d=%s\n", i - X86_ST_FIRST, buf);
|
|
}
|
|
}
|
|
|
|
if (Mask & REGALL_MMXREG)
|
|
{
|
|
ULONG i;
|
|
REGVAL val;
|
|
|
|
for (i = X86_MM_FIRST; i <= X86_MM_LAST; i++)
|
|
{
|
|
GetMmxReg(i, &val);
|
|
MaskOut(OutMask, "mm%d=%08x%08x ",
|
|
i - X86_MM_FIRST,
|
|
val.i64Parts.high, val.i64Parts.low);
|
|
i++;
|
|
GetMmxReg(i, &val);
|
|
MaskOut(OutMask, "mm%d=%08x%08x\n",
|
|
i - X86_MM_FIRST,
|
|
val.i64Parts.high, val.i64Parts.low);
|
|
}
|
|
}
|
|
|
|
if (Mask & REGALL_XMMREG)
|
|
{
|
|
ULONG i;
|
|
REGVAL Val;
|
|
|
|
for (i = X86_XMM_FIRST; i <= X86_XMM_LAST; i++)
|
|
{
|
|
GetVal(i, &Val);
|
|
MaskOut(OutMask, "xmm%d=%hg %hg %hg %hg\n", i - X86_XMM_FIRST,
|
|
*(float *)&Val.bytes[3 * sizeof(float)],
|
|
*(float *)&Val.bytes[2 * sizeof(float)],
|
|
*(float *)&Val.bytes[1 * sizeof(float)],
|
|
*(float *)&Val.bytes[0 * sizeof(float)]);
|
|
}
|
|
}
|
|
|
|
if (Mask & REGALL_CREG)
|
|
{
|
|
MaskOut(OutMask, "cr0=%08lx cr2=%08lx cr3=%08lx\n",
|
|
GetIntReg(X86_CR0),
|
|
GetIntReg(X86_CR2),
|
|
GetIntReg(X86_CR3));
|
|
}
|
|
|
|
if (Mask & REGALL_DREG)
|
|
{
|
|
MaskOut(OutMask, "dr0=%08lx dr1=%08lx dr2=%08lx\n",
|
|
GetIntReg(X86_DR0),
|
|
GetIntReg(X86_DR1),
|
|
GetIntReg(X86_DR2));
|
|
MaskOut(OutMask, "dr3=%08lx dr6=%08lx dr7=%08lx",
|
|
GetIntReg(X86_DR3),
|
|
GetIntReg(X86_DR6),
|
|
GetIntReg(X86_DR7));
|
|
if (IS_USER_TARGET())
|
|
{
|
|
MaskOut(OutMask, "\n");
|
|
}
|
|
else
|
|
{
|
|
MaskOut(OutMask, " cr4=%08lx\n", GetIntReg(X86_CR4));
|
|
}
|
|
}
|
|
|
|
if (Mask & REGALL_DESC)
|
|
{
|
|
MaskOut(OutMask, "gdtr=%08lx gdtl=%04lx idtr=%08lx idtl=%04lx "
|
|
"tr=%04lx ldtr=%04x\n",
|
|
GetIntReg(X86_GDTR),
|
|
GetIntReg(X86_GDTL),
|
|
GetIntReg(X86_IDTR),
|
|
GetIntReg(X86_IDTL),
|
|
GetIntReg(X86_TR),
|
|
GetIntReg(X86_LDTR));
|
|
}
|
|
}
|
|
|
|
TRACEMODE
|
|
X86MachineInfo::GetTraceMode (void)
|
|
{
|
|
if (IS_KERNEL_TARGET())
|
|
{
|
|
return m_TraceMode;
|
|
}
|
|
else
|
|
{
|
|
return ((GetIntReg(X86_EFL) & X86_BIT_FLAGTF) != 0) ?
|
|
TRACE_INSTRUCTION : TRACE_NONE;
|
|
}
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::SetTraceMode (TRACEMODE Mode)
|
|
{
|
|
DBG_ASSERT(Mode == TRACE_NONE ||
|
|
Mode == TRACE_INSTRUCTION ||
|
|
(IS_KERNEL_TARGET() && m_SupportsBranchTrace &&
|
|
Mode == TRACE_TAKEN_BRANCH));
|
|
|
|
if (IS_KERNEL_TARGET())
|
|
{
|
|
m_TraceMode = Mode;
|
|
}
|
|
else
|
|
{
|
|
ULONG Efl = GetIntReg(X86_EFL);
|
|
switch (Mode)
|
|
{
|
|
case TRACE_NONE:
|
|
Efl &= ~X86_BIT_FLAGTF;
|
|
break;
|
|
case TRACE_INSTRUCTION:
|
|
Efl |= X86_BIT_FLAGTF;
|
|
break;
|
|
}
|
|
SetReg32(X86_EFL, Efl);
|
|
}
|
|
}
|
|
|
|
BOOL
|
|
X86MachineInfo::IsStepStatusSupported(ULONG Status)
|
|
{
|
|
switch(Status)
|
|
{
|
|
case DEBUG_STATUS_STEP_INTO:
|
|
case DEBUG_STATUS_STEP_OVER:
|
|
return TRUE;
|
|
case DEBUG_STATUS_STEP_BRANCH:
|
|
return IS_KERNEL_TARGET() && m_SupportsBranchTrace;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::KdUpdateControlSet
|
|
(PDBGKD_ANY_CONTROL_SET ControlSet)
|
|
{
|
|
TRACEMODE TraceMode = GetTraceMode();
|
|
ULONG64 DebugCtlMsr;
|
|
|
|
ControlSet->X86ControlSet.TraceFlag = TraceMode != TRACE_NONE;
|
|
ControlSet->X86ControlSet.Dr7 = GetIntReg(X86_DR7);
|
|
|
|
if (TraceMode != TRACE_NONE && m_SupportsBranchTrace &&
|
|
NT_SUCCESS(DbgKdReadMsr(X86_MSR_DEBUG_CTL, &DebugCtlMsr)))
|
|
{
|
|
DebugCtlMsr |= X86_DEBUG_CTL_LAST_BRANCH_RECORD;
|
|
if (TraceMode == TRACE_TAKEN_BRANCH)
|
|
{
|
|
DebugCtlMsr |= X86_DEBUG_CTL_BRANCH_TRACE;
|
|
}
|
|
DbgKdWriteMsr(X86_MSR_DEBUG_CTL, DebugCtlMsr);
|
|
}
|
|
|
|
BpOut("UpdateControlSet(%d) trace %d, DR7 %X\n",
|
|
g_RegContextProcessor, ControlSet->X86ControlSet.TraceFlag,
|
|
ControlSet->X86ControlSet.Dr7);
|
|
|
|
if (!g_WatchFunctions.IsStarted() && g_WatchBeginCurFunc != 1)
|
|
{
|
|
ControlSet->X86ControlSet.CurrentSymbolStart = 0;
|
|
ControlSet->X86ControlSet.CurrentSymbolEnd = 0;
|
|
}
|
|
else
|
|
{
|
|
ControlSet->X86ControlSet.CurrentSymbolStart =
|
|
(ULONG)g_WatchBeginCurFunc;
|
|
ControlSet->X86ControlSet.CurrentSymbolEnd =
|
|
(ULONG)g_WatchEndCurFunc;
|
|
}
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::KdSaveProcessorState(void)
|
|
{
|
|
MachineInfo::KdSaveProcessorState();
|
|
m_SavedSpecialRegContext = m_SpecialRegContext;
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::KdRestoreProcessorState(void)
|
|
{
|
|
MachineInfo::KdRestoreProcessorState();
|
|
m_SpecialRegContext = m_SavedSpecialRegContext;
|
|
}
|
|
|
|
ULONG
|
|
X86MachineInfo::ExecutingMachine(void)
|
|
{
|
|
return IMAGE_FILE_MACHINE_I386;
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::SetPageDirectory(ULONG Idx, ULONG64 PageDir,
|
|
PULONG NextIdx)
|
|
{
|
|
HRESULT Status;
|
|
|
|
*NextIdx = PAGE_DIR_COUNT;
|
|
|
|
if (PageDir == 0)
|
|
{
|
|
if (g_ActualSystemVersion > XBOX_SVER_START &&
|
|
g_ActualSystemVersion < XBOX_SVER_END)
|
|
{
|
|
// XBox has only one page directory in CR3 for everything.
|
|
// The process doesn't have a dirbase entry.
|
|
PageDir = GetReg32(X86_CR3);
|
|
if (PageDir == 0)
|
|
{
|
|
// Register retrieval failure.
|
|
return E_FAIL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Assume NT structures.
|
|
if ((Status = g_Target->ReadImplicitProcessInfoPointer
|
|
(m_OffsetEprocessDirectoryTableBase, &PageDir)) != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
if (g_ImplicitProcessDataIsDefault &&
|
|
!IS_LOCAL_KERNEL_TARGET())
|
|
{
|
|
// Verify that the process dirbase matches the CR3 setting
|
|
// as a sanity check.
|
|
ULONG Cr3 = GetReg32(X86_CR3);
|
|
if (Cr3 && Cr3 != (ULONG)PageDir)
|
|
{
|
|
WarnOut("WARNING: Process directory table base %08X "
|
|
"doesn't match CR3 %08X\n",
|
|
(ULONG)PageDir, Cr3);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Sanitize the value.
|
|
if (KdDebuggerData.PaeEnabled)
|
|
{
|
|
PageDir &= X86_PDBR_MASK;
|
|
}
|
|
else
|
|
{
|
|
PageDir &= X86_VALID_PFN_MASK;
|
|
}
|
|
|
|
// There is only one page directory so update all the slots.
|
|
m_PageDirectories[PAGE_DIR_USER] = PageDir;
|
|
m_PageDirectories[PAGE_DIR_SESSION] = PageDir;
|
|
m_PageDirectories[PAGE_DIR_KERNEL] = PageDir;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
#define X86_PAGE_FILE_INDEX(Entry) \
|
|
(((ULONG)(Entry) >> 1) & MAX_PAGING_FILE_MASK)
|
|
#define X86_PAGE_FILE_OFFSET(Entry) \
|
|
(((Entry) >> 12) << X86_PAGE_SHIFT)
|
|
|
|
HRESULT
|
|
X86MachineInfo::GetVirtualTranslationPhysicalOffsets(ULONG64 Virt,
|
|
PULONG64 Offsets,
|
|
ULONG OffsetsSize,
|
|
PULONG Levels,
|
|
PULONG PfIndex,
|
|
PULONG64 LastVal)
|
|
{
|
|
ULONG64 Addr;
|
|
HRESULT Status;
|
|
|
|
*Levels = 0;
|
|
|
|
if (m_Translating)
|
|
{
|
|
return E_UNEXPECTED;
|
|
}
|
|
m_Translating = TRUE;
|
|
|
|
//
|
|
// throw away top 32 bits on X86.
|
|
//
|
|
Virt &= 0x00000000FFFFFFFF;
|
|
|
|
//
|
|
// Reset the page directory in case it was 0
|
|
//
|
|
if (m_PageDirectories[PAGE_DIR_SINGLE] == 0)
|
|
{
|
|
if ((Status = SetDefaultPageDirectories(1 << PAGE_DIR_SINGLE)) != S_OK)
|
|
{
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
KdOut("X86VtoP: Virt %s, pagedir %s\n",
|
|
FormatAddr64(Virt),
|
|
FormatDisp64(m_PageDirectories[PAGE_DIR_SINGLE]));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = m_PageDirectories[PAGE_DIR_SINGLE];
|
|
OffsetsSize--;
|
|
}
|
|
|
|
// This routine uses the fact that the PFN shift is the same
|
|
// as the page shift to simplify some expressions.
|
|
C_ASSERT(X86_VALID_PFN_SHIFT == X86_PAGE_SHIFT);
|
|
|
|
if (KdDebuggerData.PaeEnabled)
|
|
{
|
|
ULONG64 Pdpe;
|
|
ULONG64 Entry;
|
|
|
|
KdOut(" x86VtoP: PaeEnabled\n");
|
|
|
|
// Read the Page Directory Pointer entry.
|
|
|
|
Pdpe = ((Virt >> X86_PDPE_SHIFT) * sizeof(Entry)) +
|
|
m_PageDirectories[PAGE_DIR_SINGLE];
|
|
|
|
KdOut("X86VtoP: PAE PDPE %s\n", FormatAddr64(Pdpe));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = Pdpe;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
if ((Status = g_Target->
|
|
ReadAllPhysical(Pdpe, &Entry, sizeof(Entry))) != S_OK)
|
|
{
|
|
KdOut("X86VtoP: PAE PDPE read error 0x%X\n", Status);
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
|
|
// Read the Page Directory entry.
|
|
|
|
Addr = (((Virt >> X86_PDE_SHIFT_PAE) & X86_PDE_MASK_PAE) *
|
|
sizeof(Entry)) + (Entry & X86_VALID_PFN_MASK_PAE);
|
|
|
|
KdOut("X86VtoP: PAE PDE %s\n", FormatAddr64(Addr));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = Addr;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
if ((Status = g_Target->
|
|
ReadAllPhysical(Addr, &Entry, sizeof(Entry))) != S_OK)
|
|
{
|
|
KdOut("X86VtoP: PAE PDE read error 0x%X\n", Status);
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
|
|
// Check for a large page. Large pages can
|
|
// never be paged out so also check for the present bit.
|
|
if ((Entry & (X86_LARGE_PAGE_MASK | 1)) == (X86_LARGE_PAGE_MASK | 1))
|
|
{
|
|
//
|
|
// If we have a large page and this is a summary dump, then
|
|
// the page may span multiple physical pages that may -- because
|
|
// of how the summary dump is written -- not be included in the
|
|
// dump. Fixup the large page address to its corresponding small
|
|
// page address.
|
|
//
|
|
|
|
if (g_DumpType == DTYPE_KERNEL_SUMMARY32)
|
|
{
|
|
ULONG SpannedPages;
|
|
|
|
SpannedPages = (ULONG)
|
|
((Virt & (X86_LARGE_PAGE_SIZE_PAE - 1)) >> X86_PAGE_SHIFT);
|
|
*LastVal = ((Entry & ~(X86_LARGE_PAGE_SIZE_PAE - 1)) |
|
|
(SpannedPages << X86_PAGE_SHIFT) |
|
|
(Virt & (X86_PAGE_SIZE - 1)));
|
|
}
|
|
else
|
|
{
|
|
*LastVal = ((Entry & ~(X86_LARGE_PAGE_SIZE_PAE - 1)) |
|
|
(Virt & (X86_LARGE_PAGE_SIZE_PAE - 1)));
|
|
}
|
|
|
|
KdOut("X86VtoP: PAE Large page mapped phys %s\n",
|
|
FormatAddr64(*LastVal));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = *LastVal;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
m_Translating = FALSE;
|
|
return S_OK;
|
|
}
|
|
|
|
// Read the Page Table entry.
|
|
|
|
if (Entry == 0)
|
|
{
|
|
KdOut("X86VtoP: PAE zero PDE\n");
|
|
m_Translating = FALSE;
|
|
return HR_PAGE_NOT_AVAILABLE;
|
|
}
|
|
else if (!(Entry & 1))
|
|
{
|
|
Addr = (((Virt >> X86_PTE_SHIFT) & X86_PTE_MASK_PAE) *
|
|
sizeof(Entry)) + X86_PAGE_FILE_OFFSET(Entry);
|
|
|
|
KdOut("X86VtoP: pagefile PAE PTE %d:%s\n",
|
|
X86_PAGE_FILE_INDEX(Entry), FormatAddr64(Addr));
|
|
|
|
if ((Status = g_Target->
|
|
ReadPageFile(X86_PAGE_FILE_INDEX(Entry), Addr,
|
|
&Entry, sizeof(Entry))) != S_OK)
|
|
{
|
|
KdOut("X86VtoP: PAE PDE not present, 0x%X\n", Status);
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Addr = (((Virt >> X86_PTE_SHIFT) & X86_PTE_MASK_PAE) *
|
|
sizeof(Entry)) + (Entry & X86_VALID_PFN_MASK_PAE);
|
|
|
|
KdOut("X86VtoP: PAE PTE %s\n", FormatAddr64(Addr));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = Addr;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
if ((Status = g_Target->
|
|
ReadAllPhysical(Addr, &Entry, sizeof(Entry))) != S_OK)
|
|
{
|
|
KdOut("X86VtoP: PAE PTE read error 0x%X\n", Status);
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
if (!(Entry & 0x1) &&
|
|
((Entry & X86_MM_PTE_PROTOTYPE_MASK) ||
|
|
!(Entry & X86_MM_PTE_TRANSITION_MASK)))
|
|
{
|
|
if (Entry == 0)
|
|
{
|
|
KdOut("X86VtoP: PAE zero PTE\n");
|
|
Status = HR_PAGE_NOT_AVAILABLE;
|
|
}
|
|
else if (Entry & X86_MM_PTE_PROTOTYPE_MASK)
|
|
{
|
|
KdOut("X86VtoP: PAE prototype PTE\n");
|
|
Status = HR_PAGE_NOT_AVAILABLE;
|
|
}
|
|
else
|
|
{
|
|
*PfIndex = X86_PAGE_FILE_INDEX(Entry);
|
|
*LastVal = (Virt & (X86_PAGE_SIZE - 1)) +
|
|
X86_PAGE_FILE_OFFSET(Entry);
|
|
KdOut("X86VtoP: PAE PTE not present, pagefile %d:%s\n",
|
|
*PfIndex, FormatAddr64(*LastVal));
|
|
Status = HR_PAGE_IN_PAGE_FILE;
|
|
}
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
|
|
*LastVal = ((Entry & X86_VALID_PFN_MASK_PAE) |
|
|
(Virt & (X86_PAGE_SIZE - 1)));
|
|
|
|
KdOut("X86VtoP: PAE Mapped phys %s\n", FormatAddr64(*LastVal));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = *LastVal;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
m_Translating = FALSE;
|
|
return S_OK;
|
|
}
|
|
else
|
|
{
|
|
ULONG Entry;
|
|
|
|
// Read the Page Directory entry.
|
|
|
|
Addr = ((Virt >> X86_PDE_SHIFT) * sizeof(Entry)) +
|
|
m_PageDirectories[PAGE_DIR_SINGLE];
|
|
|
|
KdOut("X86VtoP: PDE %s\n", FormatDisp64(Addr));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = Addr;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
if ((Status = g_Target->
|
|
ReadAllPhysical(Addr, &Entry, sizeof(Entry))) != S_OK)
|
|
{
|
|
KdOut("X86VtoP: PDE read error 0x%X\n", Status);
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
|
|
// Check for a large page. Large pages can
|
|
// never be paged out so also check for the present bit.
|
|
if ((Entry & (X86_LARGE_PAGE_MASK | 1)) == (X86_LARGE_PAGE_MASK | 1))
|
|
{
|
|
*LastVal = ((Entry & ~(X86_LARGE_PAGE_SIZE - 1)) |
|
|
(Virt & (X86_LARGE_PAGE_SIZE - 1)));
|
|
|
|
KdOut("X86VtoP: Large page mapped phys %s\n",
|
|
FormatAddr64(*LastVal));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = *LastVal;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
m_Translating = FALSE;
|
|
return S_OK;
|
|
}
|
|
|
|
// Read the Page Table entry.
|
|
|
|
if (Entry == 0)
|
|
{
|
|
KdOut("X86VtoP: PAE zero PDE\n");
|
|
m_Translating = FALSE;
|
|
return HR_PAGE_NOT_AVAILABLE;
|
|
}
|
|
else if (!(Entry & 1))
|
|
{
|
|
Addr = (((Virt >> X86_PTE_SHIFT) & X86_PTE_MASK) *
|
|
sizeof(Entry)) + X86_PAGE_FILE_OFFSET(Entry);
|
|
|
|
KdOut("X86VtoP: pagefile PTE %d:%s\n",
|
|
X86_PAGE_FILE_INDEX(Entry), FormatAddr64(Addr));
|
|
|
|
if ((Status = g_Target->
|
|
ReadPageFile(X86_PAGE_FILE_INDEX(Entry), Addr,
|
|
&Entry, sizeof(Entry))) != S_OK)
|
|
{
|
|
KdOut("X86VtoP: PDE not present, 0x%X\n", Status);
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Addr = (((Virt >> X86_PTE_SHIFT) & X86_PTE_MASK) *
|
|
sizeof(Entry)) + (Entry & X86_VALID_PFN_MASK);
|
|
|
|
KdOut("X86VtoP: PTE %s\n", FormatAddr64(Addr));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = Addr;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
if ((Status = g_Target->
|
|
ReadAllPhysical(Addr, &Entry, sizeof(Entry))) != S_OK)
|
|
{
|
|
KdOut("X86VtoP: PTE read error 0x%X\n", Status);
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
if (!(Entry & 0x1) &&
|
|
((Entry & X86_MM_PTE_PROTOTYPE_MASK) ||
|
|
!(Entry & X86_MM_PTE_TRANSITION_MASK)))
|
|
{
|
|
if (Entry == 0)
|
|
{
|
|
KdOut("X86VtoP: zero PTE\n");
|
|
Status = HR_PAGE_NOT_AVAILABLE;
|
|
}
|
|
else if (Entry & X86_MM_PTE_PROTOTYPE_MASK)
|
|
{
|
|
KdOut("X86VtoP: prototype PTE\n");
|
|
Status = HR_PAGE_NOT_AVAILABLE;
|
|
}
|
|
else
|
|
{
|
|
*PfIndex = X86_PAGE_FILE_INDEX(Entry);
|
|
*LastVal = (Virt & (X86_PAGE_SIZE - 1)) +
|
|
X86_PAGE_FILE_OFFSET(Entry);
|
|
KdOut("X86VtoP: PTE not present, pagefile %d:%s\n",
|
|
*PfIndex, FormatAddr64(*LastVal));
|
|
Status = HR_PAGE_IN_PAGE_FILE;
|
|
}
|
|
m_Translating = FALSE;
|
|
return Status;
|
|
}
|
|
|
|
*LastVal = ((Entry & X86_VALID_PFN_MASK) |
|
|
(Virt & (X86_PAGE_SIZE - 1)));
|
|
|
|
KdOut("X86VtoP: Mapped phys %s\n", FormatAddr64(*LastVal));
|
|
|
|
(*Levels)++;
|
|
if (Offsets != NULL && OffsetsSize > 0)
|
|
{
|
|
*Offsets++ = *LastVal;
|
|
OffsetsSize--;
|
|
}
|
|
|
|
m_Translating = FALSE;
|
|
return S_OK;
|
|
}
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::GetBaseTranslationVirtualOffset(PULONG64 Offset)
|
|
{
|
|
if (KdDebuggerData.PaeEnabled)
|
|
{
|
|
*Offset = EXTEND64(X86_BASE_VIRT_PAE);
|
|
}
|
|
else
|
|
{
|
|
*Offset = EXTEND64(X86_BASE_VIRT);
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
BOOL
|
|
X86MachineInfo::DisplayTrapFrame(ULONG64 FrameAddress,
|
|
PCROSS_PLATFORM_CONTEXT Context)
|
|
{
|
|
X86_KTRAP_FRAME TrapContents;
|
|
CHAR Buffer[200];
|
|
DESCRIPTOR64 Descriptor={0};
|
|
ULONG Esp;
|
|
ULONG64 DisasmAddr;
|
|
ULONG Temp, SegSs, res;
|
|
ULONG EFlags;
|
|
|
|
#define Preg(S,R) dprintf("%s=%08lx ",S, TrapContents.R);
|
|
|
|
if (g_Target->ReadVirtual(FrameAddress, &TrapContents,
|
|
sizeof(TrapContents), &res) != S_OK)
|
|
{
|
|
dprintf("Unable to read trap frame contents\n");
|
|
return FALSE;
|
|
}
|
|
|
|
Preg("eax", Eax);
|
|
Preg("ebx", Ebx);
|
|
Preg("ecx", Ecx);
|
|
Preg("edx", Edx);
|
|
Preg("esi", Esi);
|
|
Preg("edi", Edi);
|
|
dprintf("\n");
|
|
|
|
|
|
//
|
|
// Figure out ESP
|
|
//
|
|
|
|
if (((TrapContents.SegCs & 1) != 0 /*KernelMode*/) ||
|
|
(TrapContents.EFlags & X86_EFLAGS_V86_MASK) ||
|
|
FrameAddress == 0)
|
|
{
|
|
// User-mode frame, real value of Esp is in HardwareEsp
|
|
Esp = TrapContents.HardwareEsp;
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// We ignore if Esp has been edited for now, and we will print a
|
|
// separate line indicating this later.
|
|
//
|
|
// Calculate kernel Esp
|
|
//
|
|
|
|
Esp = (ULONG)FrameAddress + FIELD_OFFSET(X86_KTRAP_FRAME, HardwareEsp);
|
|
}
|
|
|
|
EFlags = TrapContents.EFlags;
|
|
|
|
dprintf("eip=%08lx esp=%08lx ebp=%08lx iopl=%1lx "
|
|
"%s %s %s %s %s %s %s %s\n",
|
|
TrapContents.Eip,
|
|
Esp,
|
|
TrapContents.Ebp,
|
|
((EFlags >> 12) & 3),
|
|
(EFlags & 0x800) ? "ov" : "nv",
|
|
(EFlags & 0x400) ? "dn" : "up",
|
|
(EFlags & 0x200) ? "ei" : "di",
|
|
(EFlags & 0x80) ? "ng" : "pl",
|
|
(EFlags & 0x40) ? "zr" : "nz",
|
|
(EFlags & 0x10) ? "ac" : "na",
|
|
(EFlags & 0x4) ? "po" : "pe",
|
|
(EFlags & 0x1) ? "cy" : "nc");
|
|
|
|
// Check whether P5 Virtual Mode Extensions are enabled, for display
|
|
// of new EFlags values.
|
|
|
|
if ( GetIntReg(X86_CR4) != 0)
|
|
{
|
|
dprintf("vip=%1lx vif=%1lx\n",
|
|
(EFlags & 0x00100000L) >> 20,
|
|
(EFlags & 0x00080000L) >> 19);
|
|
}
|
|
|
|
//
|
|
// Find correct SS
|
|
//
|
|
|
|
if (EFlags & X86_EFLAGS_V86_MASK)
|
|
{
|
|
SegSs = (USHORT)(TrapContents.HardwareSegSs & 0xffff);
|
|
}
|
|
else if ((TrapContents.SegCs & X86_MODE_MASK) != 0 /*KernelMode*/)
|
|
{
|
|
//
|
|
// It's user mode. The HardwareSegSs contains R3 data selector.
|
|
//
|
|
|
|
SegSs = (USHORT)(TrapContents.HardwareSegSs | X86_RPL_MASK) & 0xffff;
|
|
}
|
|
else
|
|
{
|
|
SegSs = X86_KGDT_R0_DATA;
|
|
}
|
|
|
|
dprintf("cs=%04x ss=%04x ds=%04x es=%04x fs=%04x gs=%04x"
|
|
" efl=%08lx\n",
|
|
(USHORT)(TrapContents.SegCs & 0xffff),
|
|
(USHORT)(SegSs & 0xffff),
|
|
(USHORT)(TrapContents.SegDs & 0xffff),
|
|
(USHORT)(TrapContents.SegEs & 0xffff),
|
|
(USHORT)(TrapContents.SegFs & 0xffff),
|
|
(USHORT)(TrapContents.SegGs & 0xffff),
|
|
EFlags);
|
|
|
|
//
|
|
// Check to see if Esp has been edited, and dump new value if it has
|
|
//
|
|
if ( (!(EFlags & X86_EFLAGS_V86_MASK)) &&
|
|
((TrapContents.SegCs & X86_MODE_MASK) == 0 /*KernelMode*/))
|
|
{
|
|
if ((TrapContents.SegCs & X86_FRAME_EDITED) == 0)
|
|
{
|
|
dprintf("ESP EDITED! New esp=%08lx\n",TrapContents.TempEsp);
|
|
}
|
|
}
|
|
|
|
if (FrameAddress)
|
|
{
|
|
dprintf("ErrCode = %08lx\n", TrapContents.ErrCode);
|
|
}
|
|
|
|
if (EFlags & X86_EFLAGS_V86_MASK)
|
|
{
|
|
DisasmAddr = ((ULONG64)((USHORT)TrapContents.SegCs & 0xffff) << 4) +
|
|
(TrapContents.Eip & 0xffff);
|
|
}
|
|
else
|
|
{
|
|
g_Target->GetSelDescriptor(this,
|
|
g_CurrentProcess->CurrentThread->Handle,
|
|
(USHORT)TrapContents.SegCs, &Descriptor);
|
|
|
|
if (Descriptor.Flags & X86_DESC_DEFAULT_BIG)
|
|
{
|
|
DisasmAddr = EXTEND64(TrapContents.Eip);
|
|
}
|
|
else
|
|
{
|
|
DisasmAddr = TrapContents.Eip;// & 0xffff
|
|
}
|
|
}
|
|
|
|
ADDR tempAddr;
|
|
Type(tempAddr) = ADDR_FLAT | FLAT_COMPUTED;
|
|
Off(tempAddr) = Flat(tempAddr) = DisasmAddr;
|
|
|
|
if (Disassemble(&tempAddr, Buffer, FALSE))
|
|
{
|
|
dprintf("%s", Buffer);
|
|
}
|
|
else
|
|
{
|
|
dprintf("%08lx ???????????????\n", TrapContents.Eip);
|
|
}
|
|
|
|
dprintf("\n");
|
|
|
|
if (Context)
|
|
{
|
|
// Fill up the context struct
|
|
#define CPCXT(Fld) Context->X86Context.Fld = TrapContents.Fld
|
|
CPCXT(Ebp); CPCXT(Eip); CPCXT(Eax); CPCXT(Ecx); CPCXT(Edx);
|
|
CPCXT(Edi); CPCXT(Esi); CPCXT(Ebx);
|
|
CPCXT(SegCs); CPCXT(SegDs); CPCXT(SegEs); CPCXT(SegFs); CPCXT(SegGs);
|
|
CPCXT(EFlags);
|
|
#undef CPCXT
|
|
Context->X86Context.SegSs = SegSs;
|
|
Context->X86Context.Esp = Esp;
|
|
}
|
|
g_LastRegFrame.InstructionOffset = EXTEND64(TrapContents.Eip);
|
|
g_LastRegFrame.StackOffset = EXTEND64(Esp);
|
|
g_LastRegFrame.FrameOffset = EXTEND64(TrapContents.Ebp);
|
|
|
|
return TRUE;
|
|
#undef Preg
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::ValidateCxr(PCROSS_PLATFORM_CONTEXT Context)
|
|
{
|
|
if (Context->X86Context.EFlags & X86_EFLAGS_V86_MASK)
|
|
{
|
|
Context->X86Context.SegSs &= 0xffff;
|
|
}
|
|
else if ((Context->X86Context.SegCs & X86_MODE_MASK))
|
|
{
|
|
//
|
|
// It's user mode. The HardwareSegSs contains R3 data selector.
|
|
//
|
|
Context->X86Context.SegSs =
|
|
(USHORT)(Context->X86Context.SegSs | X86_RPL_MASK) & 0xffff;
|
|
}
|
|
else
|
|
{
|
|
Context->X86Context.SegSs = X86_KGDT_R0_DATA;
|
|
}
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::OutputFunctionEntry(PVOID RawEntry)
|
|
{
|
|
PFPO_DATA FpoData = (PFPO_DATA)RawEntry;
|
|
|
|
dprintf("OffStart: %08x\n", FpoData->ulOffStart);
|
|
dprintf("ProcSize: 0x%x\n", FpoData->cbProcSize);
|
|
switch(FpoData->cbFrame)
|
|
{
|
|
case FRAME_FPO:
|
|
dprintf("Params: %d\n", FpoData->cdwParams);
|
|
dprintf("Locals: %d\n", FpoData->cdwLocals);
|
|
dprintf("Registers: %d\n", FpoData->cbRegs);
|
|
|
|
if (FpoData->fHasSEH)
|
|
{
|
|
dprintf("Has SEH\n");
|
|
}
|
|
if (FpoData->fUseBP)
|
|
{
|
|
dprintf("Uses EBP\n");
|
|
}
|
|
break;
|
|
|
|
case FRAME_NONFPO:
|
|
dprintf("Non-FPO\n");
|
|
break;
|
|
|
|
case FRAME_TRAP:
|
|
if (!IS_KERNEL_TARGET())
|
|
{
|
|
goto UnknownFpo;
|
|
}
|
|
|
|
dprintf("Params: %d\n", FpoData->cdwParams);
|
|
dprintf("Locals: %d\n", FpoData->cdwLocals);
|
|
dprintf("Trap frame\n");
|
|
break;
|
|
|
|
case FRAME_TSS:
|
|
if (!IS_KERNEL_TARGET())
|
|
{
|
|
goto UnknownFpo;
|
|
}
|
|
|
|
dprintf("Task gate\n");
|
|
break;
|
|
|
|
default:
|
|
UnknownFpo:
|
|
dprintf("Unknown FPO type\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::ReadKernelProcessorId
|
|
(ULONG Processor, PDEBUG_PROCESSOR_IDENTIFICATION_ALL Id)
|
|
{
|
|
HRESULT Status;
|
|
ULONG64 Prcb, PrcbMember;
|
|
ULONG Data;
|
|
|
|
if ((Status = g_Target->
|
|
GetProcessorSystemDataOffset(Processor, DEBUG_DATA_KPRCB_OFFSET,
|
|
&Prcb)) != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
if ((Status = g_Target->
|
|
ReadAllVirtual(Prcb + FIELD_OFFSET(X86_PARTIAL_KPRCB, CpuType),
|
|
&Data, sizeof(Data))) != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
Id->X86.Family = Data & 0xf;
|
|
Id->X86.Model = (Data >> 24) & 0xf;
|
|
Id->X86.Stepping = (Data >> 16) & 0xf;
|
|
|
|
if (g_TargetBuildNumber >= 2474)
|
|
{
|
|
// XP
|
|
PrcbMember = X86_2474_KPRCB_VENDOR_STRING;
|
|
}
|
|
else if (g_TargetBuildNumber >= 2251)
|
|
{
|
|
// XP BETA1 and BETA 2
|
|
PrcbMember = X86_2251_KPRCB_VENDOR_STRING;
|
|
}
|
|
else if (g_TargetBuildNumber >= 2087)
|
|
{
|
|
// NT5
|
|
PrcbMember = X86_2087_KPRCB_VENDOR_STRING;
|
|
}
|
|
else
|
|
{
|
|
// NT4
|
|
PrcbMember = X86_1387_KPRCB_VENDOR_STRING;
|
|
}
|
|
|
|
if ((Status = g_Target->
|
|
ReadAllVirtual(Prcb + PrcbMember, Id->X86.VendorString,
|
|
X86_VENDOR_STRING_SIZE)) != S_OK)
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::KdGetSpecialRegistersFromContext(void)
|
|
{
|
|
DBG_ASSERT(m_ContextState >= MCTX_FULL);
|
|
|
|
m_SpecialRegContext.KernelDr0 = m_Context.X86Nt5Context.Dr0;
|
|
m_SpecialRegContext.KernelDr1 = m_Context.X86Nt5Context.Dr1;
|
|
m_SpecialRegContext.KernelDr2 = m_Context.X86Nt5Context.Dr2;
|
|
m_SpecialRegContext.KernelDr3 = m_Context.X86Nt5Context.Dr3;
|
|
m_SpecialRegContext.KernelDr6 = m_Context.X86Nt5Context.Dr6;
|
|
m_SpecialRegContext.KernelDr7 = m_Context.X86Nt5Context.Dr7;
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::KdSetSpecialRegistersInContext(void)
|
|
{
|
|
DBG_ASSERT(m_ContextState >= MCTX_FULL);
|
|
|
|
m_Context.X86Nt5Context.Dr0 = m_SpecialRegContext.KernelDr0;
|
|
m_Context.X86Nt5Context.Dr1 = m_SpecialRegContext.KernelDr1;
|
|
m_Context.X86Nt5Context.Dr2 = m_SpecialRegContext.KernelDr2;
|
|
m_Context.X86Nt5Context.Dr3 = m_SpecialRegContext.KernelDr3;
|
|
m_Context.X86Nt5Context.Dr6 = m_SpecialRegContext.KernelDr6;
|
|
m_Context.X86Nt5Context.Dr7 = m_SpecialRegContext.KernelDr7;
|
|
}
|
|
|
|
ULONG
|
|
X86MachineInfo::GetIntReg(ULONG regnum)
|
|
{
|
|
switch (m_ContextState)
|
|
{
|
|
case MCTX_PC:
|
|
if (regnum == X86_EIP)
|
|
{
|
|
return m_Context.X86Nt5Context.Eip;
|
|
}
|
|
goto MctxContext;
|
|
|
|
case MCTX_DR67_REPORT:
|
|
switch (regnum)
|
|
{
|
|
case X86_DR6: return m_Context.X86Nt5Context.Dr6;
|
|
case X86_DR7: return m_Context.X86Nt5Context.Dr7;
|
|
}
|
|
goto MctxContext;
|
|
|
|
case MCTX_REPORT:
|
|
switch (regnum)
|
|
{
|
|
case X86_CS: return (USHORT)m_Context.X86Nt5Context.SegCs;
|
|
case X86_DS: return (USHORT)m_Context.X86Nt5Context.SegDs;
|
|
case X86_ES: return (USHORT)m_Context.X86Nt5Context.SegEs;
|
|
case X86_FS: return (USHORT)m_Context.X86Nt5Context.SegFs;
|
|
case X86_EIP: return m_Context.X86Nt5Context.Eip;
|
|
case X86_EFL: return m_Context.X86Nt5Context.EFlags;
|
|
case X86_DR6: return m_Context.X86Nt5Context.Dr6;
|
|
case X86_DR7: return m_Context.X86Nt5Context.Dr7;
|
|
}
|
|
// Fallthrough!
|
|
|
|
case MCTX_NONE:
|
|
MctxContext:
|
|
if (GetContextState(MCTX_CONTEXT) != S_OK)
|
|
{
|
|
return 0;
|
|
}
|
|
// Fallthrough!
|
|
|
|
case MCTX_CONTEXT:
|
|
switch (regnum)
|
|
{
|
|
case X86_CS: return (USHORT)m_Context.X86Nt5Context.SegCs;
|
|
case X86_DS: return (USHORT)m_Context.X86Nt5Context.SegDs;
|
|
case X86_ES: return (USHORT)m_Context.X86Nt5Context.SegEs;
|
|
case X86_FS: return (USHORT)m_Context.X86Nt5Context.SegFs;
|
|
case X86_EIP: return m_Context.X86Nt5Context.Eip;
|
|
case X86_EFL: return m_Context.X86Nt5Context.EFlags;
|
|
|
|
case X86_GS: return (USHORT)m_Context.X86Nt5Context.SegGs;
|
|
case X86_SS: return (USHORT)m_Context.X86Nt5Context.SegSs;
|
|
case X86_EDI: return m_Context.X86Nt5Context.Edi;
|
|
case X86_ESI: return m_Context.X86Nt5Context.Esi;
|
|
case X86_EBX: return m_Context.X86Nt5Context.Ebx;
|
|
case X86_EDX: return m_Context.X86Nt5Context.Edx;
|
|
case X86_ECX: return m_Context.X86Nt5Context.Ecx;
|
|
case X86_EAX: return m_Context.X86Nt5Context.Eax;
|
|
case X86_EBP: return m_Context.X86Nt5Context.Ebp;
|
|
case X86_ESP: return m_Context.X86Nt5Context.Esp;
|
|
|
|
case X86_FPCW:
|
|
return m_Context.X86Nt5Context.FloatSave.ControlWord & 0xffff;
|
|
case X86_FPSW:
|
|
return m_Context.X86Nt5Context.FloatSave.StatusWord & 0xffff;
|
|
case X86_FPTW:
|
|
return m_Context.X86Nt5Context.FloatSave.TagWord & 0xffff;
|
|
|
|
case X86_MXCSR:
|
|
return m_Context.X86Nt5Context.FxSave.MXCsr;
|
|
}
|
|
|
|
//
|
|
// The requested register is not in our current context, load up
|
|
// a complete context
|
|
//
|
|
|
|
if (GetContextState(MCTX_FULL) != S_OK)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
//
|
|
// We must have a complete context...
|
|
//
|
|
|
|
switch (regnum)
|
|
{
|
|
case X86_GS:
|
|
return (USHORT)m_Context.X86Nt5Context.SegGs;
|
|
case X86_FS:
|
|
return (USHORT)m_Context.X86Nt5Context.SegFs;
|
|
case X86_ES:
|
|
return (USHORT)m_Context.X86Nt5Context.SegEs;
|
|
case X86_DS:
|
|
return (USHORT)m_Context.X86Nt5Context.SegDs;
|
|
case X86_EDI:
|
|
return m_Context.X86Nt5Context.Edi;
|
|
case X86_ESI:
|
|
return m_Context.X86Nt5Context.Esi;
|
|
case X86_SI:
|
|
return(m_Context.X86Nt5Context.Esi & 0xffff);
|
|
case X86_DI:
|
|
return(m_Context.X86Nt5Context.Edi & 0xffff);
|
|
case X86_EBX:
|
|
return m_Context.X86Nt5Context.Ebx;
|
|
case X86_EDX:
|
|
return m_Context.X86Nt5Context.Edx;
|
|
case X86_ECX:
|
|
return m_Context.X86Nt5Context.Ecx;
|
|
case X86_EAX:
|
|
return m_Context.X86Nt5Context.Eax;
|
|
case X86_EBP:
|
|
return m_Context.X86Nt5Context.Ebp;
|
|
case X86_EIP:
|
|
return m_Context.X86Nt5Context.Eip;
|
|
case X86_CS:
|
|
return (USHORT)m_Context.X86Nt5Context.SegCs;
|
|
case X86_EFL:
|
|
return m_Context.X86Nt5Context.EFlags;
|
|
case X86_ESP:
|
|
return m_Context.X86Nt5Context.Esp;
|
|
case X86_SS:
|
|
return (USHORT)m_Context.X86Nt5Context.SegSs;
|
|
|
|
case X86_DR0:
|
|
return m_Context.X86Nt5Context.Dr0;
|
|
case X86_DR1:
|
|
return m_Context.X86Nt5Context.Dr1;
|
|
case X86_DR2:
|
|
return m_Context.X86Nt5Context.Dr2;
|
|
case X86_DR3:
|
|
return m_Context.X86Nt5Context.Dr3;
|
|
case X86_DR6:
|
|
return m_Context.X86Nt5Context.Dr6;
|
|
case X86_DR7:
|
|
return m_Context.X86Nt5Context.Dr7;
|
|
|
|
case X86_FPCW:
|
|
return m_Context.X86Nt5Context.FloatSave.ControlWord & 0xffff;
|
|
case X86_FPSW:
|
|
return m_Context.X86Nt5Context.FloatSave.StatusWord & 0xffff;
|
|
case X86_FPTW:
|
|
return m_Context.X86Nt5Context.FloatSave.TagWord & 0xffff;
|
|
|
|
case X86_MXCSR:
|
|
return m_Context.X86Nt5Context.FxSave.MXCsr;
|
|
}
|
|
|
|
if (IS_KERNEL_TARGET())
|
|
{
|
|
switch(regnum)
|
|
{
|
|
case X86_CR0:
|
|
return m_SpecialRegContext.Cr0;
|
|
case X86_CR2:
|
|
return m_SpecialRegContext.Cr2;
|
|
case X86_CR3:
|
|
return m_SpecialRegContext.Cr3;
|
|
case X86_CR4:
|
|
return m_SpecialRegContext.Cr4;
|
|
case X86_GDTR:
|
|
return m_SpecialRegContext.Gdtr.Base;
|
|
case X86_GDTL:
|
|
return (ULONG)m_SpecialRegContext.Gdtr.Limit;
|
|
case X86_IDTR:
|
|
return m_SpecialRegContext.Idtr.Base;
|
|
case X86_IDTL:
|
|
return (ULONG)m_SpecialRegContext.Idtr.Limit;
|
|
case X86_TR:
|
|
return (ULONG)m_SpecialRegContext.Tr;
|
|
case X86_LDTR:
|
|
return (ULONG)m_SpecialRegContext.Ldtr;
|
|
}
|
|
}
|
|
|
|
ErrOut("X86MachineInfo::GetVal: "
|
|
"unknown register %lx requested\n", regnum);
|
|
return REG_ERROR;
|
|
}
|
|
|
|
PULONG64
|
|
X86MachineInfo::GetMmxRegSlot(ULONG regnum)
|
|
{
|
|
return (PULONG64)(m_Context.X86Nt5Context.FloatSave.RegisterArea +
|
|
GetMmxRegOffset(regnum - X86_MM_FIRST,
|
|
GetIntReg(X86_FPSW)) * 10);
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::GetMmxReg(ULONG regnum, REGVAL *val)
|
|
{
|
|
if (GetContextState(MCTX_CONTEXT) == S_OK)
|
|
{
|
|
val->i64 = *(ULONG64 UNALIGNED *)GetMmxRegSlot(regnum);
|
|
}
|
|
}
|
|
|
|
void
|
|
X86MachineInfo::GetFloatReg(ULONG regnum, REGVAL *val)
|
|
{
|
|
if (GetContextState(MCTX_CONTEXT) == S_OK)
|
|
{
|
|
memcpy(val->f10, m_Context.X86Nt5Context.FloatSave.RegisterArea +
|
|
10 * (regnum - X86_ST_FIRST), sizeof(val->f10));
|
|
}
|
|
}
|
|
|
|
// TSS
|
|
|
|
ULONG64
|
|
X86MachineInfo::Selector2Address(
|
|
USHORT TaskRegister
|
|
)
|
|
{
|
|
DESCRIPTOR64 desc;
|
|
|
|
//
|
|
// Lookup task register
|
|
//
|
|
|
|
if (g_Target->GetSelDescriptor
|
|
(this, g_CurrentProcess->CurrentThread->Handle,
|
|
TaskRegister, &desc) != S_OK)
|
|
{
|
|
//
|
|
// Can't do it.
|
|
//
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (X86_DESC_TYPE(desc.Flags) != 9 &&
|
|
X86_DESC_TYPE(desc.Flags) != 0xb)
|
|
{
|
|
//
|
|
// not a 32bit task descriptor
|
|
//
|
|
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Read in Task State Segment
|
|
//
|
|
|
|
return desc.Base;
|
|
}
|
|
|
|
HRESULT
|
|
X86MachineInfo::DumpTSS(void)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
|
|
|
|
Arguments:
|
|
|
|
args -
|
|
|
|
Return Value:
|
|
|
|
None
|
|
|
|
--*/
|
|
|
|
{
|
|
|
|
#define MAX_RING 3
|
|
|
|
ULONG taskRegister;
|
|
PUCHAR buf;
|
|
ULONG64 hostAddress;
|
|
BOOLEAN extendedDump;
|
|
ULONG i;
|
|
USHORT SegSs;
|
|
CHAR Buffer[200];
|
|
DESCRIPTOR64 Descriptor;
|
|
ULONG Esp;
|
|
ULONG64 DisasmAddr;
|
|
|
|
struct
|
|
{
|
|
// intel's TSS format
|
|
ULONG Previous;
|
|
struct
|
|
{
|
|
ULONG Esp;
|
|
ULONG Ss;
|
|
} Ring[MAX_RING];
|
|
ULONG Cr3;
|
|
ULONG Eip;
|
|
ULONG EFlags;
|
|
ULONG Eax;
|
|
ULONG Ecx;
|
|
ULONG Edx;
|
|
ULONG Ebx;
|
|
ULONG Esp;
|
|
ULONG Ebp;
|
|
ULONG Esi;
|
|
ULONG Edi;
|
|
ULONG Es;
|
|
ULONG Cs;
|
|
ULONG Ss;
|
|
ULONG Ds;
|
|
ULONG Fs;
|
|
ULONG Gs;
|
|
ULONG Ldt;
|
|
USHORT T;
|
|
USHORT IoMapBase;
|
|
} TSS;
|
|
|
|
buf = (PUCHAR)&TSS;
|
|
*buf = '\0';
|
|
|
|
taskRegister = (ULONG) GetExpression();
|
|
|
|
//
|
|
// If user specified a 2nd parameter, doesn't matter what it is,
|
|
// dump the portions of the TSS not covered by the trap frame dump.
|
|
//
|
|
if (*g_CurCmd)
|
|
{
|
|
extendedDump = TRUE;
|
|
g_CurCmd += strlen(g_CurCmd);
|
|
}
|
|
|
|
hostAddress = Selector2Address((USHORT)taskRegister);
|
|
|
|
if (!hostAddress)
|
|
{
|
|
ErrOut("unable to get Task State Segment address from selector %lX\n",
|
|
taskRegister);
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
if (g_Target->ReadVirtual(hostAddress, &TSS, sizeof(TSS), &i) != S_OK)
|
|
{
|
|
ErrOut("unable to read Task State Segment from host address %lx\n",
|
|
hostAddress);
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
//
|
|
// Display it.
|
|
//
|
|
|
|
if (extendedDump)
|
|
{
|
|
dprintf("\nTask State Segment (selector 0x%x) at 0x%p\n\n",
|
|
taskRegister,
|
|
hostAddress);
|
|
dprintf("Previous Task Link = %4x\n", TSS.Previous);
|
|
for (i = 0 ; i < MAX_RING ; i++)
|
|
{
|
|
dprintf("Esp%d = %8x SS%d = %4x\n",
|
|
i, TSS.Ring[i].Esp,
|
|
i, TSS.Ring[i].Ss);
|
|
}
|
|
dprintf("CR3 (PDBR) = %08x\n", TSS.Cr3);
|
|
dprintf("I/O Map Base Address = %4x, Debug Trap (T) = %s\n",
|
|
TSS.IoMapBase,
|
|
TSS.T == 0 ? "False" : "True");
|
|
dprintf("\nSaved General Purpose Registers\n\n");
|
|
}
|
|
|
|
dprintf("eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
|
|
TSS.Eax,
|
|
TSS.Ebx,
|
|
TSS.Ecx,
|
|
TSS.Edx,
|
|
TSS.Esi,
|
|
TSS.Edi);
|
|
Esp = TSS.Esp;
|
|
|
|
dprintf("eip=%08lx esp=%08lx ebp=%08lx iopl=%1lx "
|
|
"%s %s %s %s %s %s %s %s\n",
|
|
TSS.Eip,
|
|
Esp,
|
|
TSS.Ebp,
|
|
((TSS.EFlags >> 12) & 3),
|
|
(TSS.EFlags & 0x800) ? "ov" : "nv",
|
|
(TSS.EFlags & 0x400) ? "dn" : "up",
|
|
(TSS.EFlags & 0x200) ? "ei" : "di",
|
|
(TSS.EFlags & 0x80) ? "ng" : "pl",
|
|
(TSS.EFlags & 0x40) ? "zr" : "nz",
|
|
(TSS.EFlags & 0x10) ? "ac" : "na",
|
|
(TSS.EFlags & 0x4) ? "po" : "pe",
|
|
(TSS.EFlags & 0x1) ? "cy" : "nc");
|
|
|
|
// Check whether P5 Virtual Mode Extensions are enabled, for display
|
|
// of new EFlags values.
|
|
|
|
if (GetIntReg(X86_CR4) != 0)
|
|
{
|
|
dprintf("vip=%1lx vif=%1lx\n",
|
|
(TSS.EFlags & 0x00100000L) >> 20,
|
|
(TSS.EFlags & 0x00080000L) >> 19);
|
|
}
|
|
|
|
//
|
|
// Find correct SS
|
|
//
|
|
|
|
if (TSS.EFlags & X86_EFLAGS_V86_MASK)
|
|
{
|
|
SegSs = (USHORT)(TSS.Ss & 0xffff);
|
|
}
|
|
else if ((TSS.Cs & X86_MODE_MASK) != 0)
|
|
{
|
|
//
|
|
// It's user mode. The HardwareSegSs contains R3 data selector.
|
|
//
|
|
|
|
SegSs = (USHORT)(TSS.Ss | X86_RPL_MASK) & 0xffff;
|
|
}
|
|
else
|
|
{
|
|
SegSs = X86_KGDT_R0_DATA;
|
|
}
|
|
|
|
dprintf("cs=%04x ss=%04x ds=%04x es=%04x fs=%04x gs=%04x"
|
|
" efl=%08lx\n",
|
|
(USHORT)(TSS.Cs & 0xffff),
|
|
(USHORT)(SegSs & 0xffff),
|
|
(USHORT)(TSS.Ds & 0xffff),
|
|
(USHORT)(TSS.Es & 0xffff),
|
|
(USHORT)(TSS.Fs & 0xffff),
|
|
(USHORT)(TSS.Gs & 0xffff),
|
|
TSS.EFlags);
|
|
|
|
if (TSS.EFlags & X86_EFLAGS_V86_MASK)
|
|
{
|
|
DisasmAddr = ((ULONG)((USHORT)TSS.Cs & 0xffff) << 4) +
|
|
(TSS.Eip & 0xffff);
|
|
}
|
|
else
|
|
{
|
|
if (g_Target->GetSelDescriptor(this, g_EventThread->Handle,
|
|
TSS.Cs, &Descriptor) != S_OK)
|
|
{
|
|
ErrOut("Unable to get TSS CS descriptor\n");
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
if (Descriptor.Flags & X86_DESC_DEFAULT_BIG)
|
|
{
|
|
DisasmAddr = EXTEND64(TSS.Eip);
|
|
}
|
|
else
|
|
{
|
|
DisasmAddr = TSS.Eip & 0xffff;
|
|
}
|
|
}
|
|
|
|
|
|
ADDR tempAddr;
|
|
Type(tempAddr) = ADDR_FLAT | FLAT_COMPUTED;
|
|
Off(tempAddr) = Flat(tempAddr) = DisasmAddr;
|
|
if (Disassemble(&tempAddr, Buffer, FALSE))
|
|
{
|
|
dprintf(Buffer);
|
|
}
|
|
else
|
|
{
|
|
dprintf("%08lx ???????????????\n", TSS.Eip);
|
|
}
|
|
|
|
dprintf("\n");
|
|
|
|
X86_CONTEXT Context;
|
|
#define CPCXT(Fld) Context.Fld = TSS.Fld
|
|
CPCXT(Ebp); CPCXT(Eip); CPCXT(Eax); CPCXT(Ecx); CPCXT(Edx);
|
|
CPCXT(Edi); CPCXT(Esi); CPCXT(Ebx); CPCXT(Esp);
|
|
CPCXT(EFlags);
|
|
#undef CPCXT
|
|
|
|
Context.SegCs = TSS.Ss; Context.SegDs = TSS.Ds; Context.SegEs = TSS.Es;
|
|
Context.SegFs = TSS.Fs; Context.SegGs = TSS.Gs; Context.SegSs = SegSs;
|
|
|
|
g_LastRegFrame.InstructionOffset = EXTEND64(Context.Eip);
|
|
g_LastRegFrame.StackOffset = EXTEND64(Context.Esp);
|
|
g_LastRegFrame.FrameOffset = EXTEND64(Context.Ebp);
|
|
|
|
SetCurrentScope(&g_LastRegFrame, &Context, sizeof(X86_CONTEXT));
|
|
return S_OK;
|
|
}
|