/** @file * IPRT - AMD64 and x86 Specific Assembly Functions. */ /* * Copyright (C) 2006-2010 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ #ifndef ___iprt_asm_amd64_x86_h #define ___iprt_asm_amd64_x86_h #include #if !defined(RT_ARCH_AMD64) && !defined(RT_ARCH_X86) # error "Not on AMD64 or x86" #endif #if defined(_MSC_VER) && RT_INLINE_ASM_USES_INTRIN # include /* Emit the intrinsics at all optimization levels. */ # pragma intrinsic(_ReadWriteBarrier) # pragma intrinsic(__cpuid) # pragma intrinsic(_enable) # pragma intrinsic(_disable) # pragma intrinsic(__rdtsc) # pragma intrinsic(__readmsr) # pragma intrinsic(__writemsr) # pragma intrinsic(__outbyte) # pragma intrinsic(__outbytestring) # pragma intrinsic(__outword) # pragma intrinsic(__outwordstring) # pragma intrinsic(__outdword) # pragma intrinsic(__outdwordstring) # pragma intrinsic(__inbyte) # pragma intrinsic(__inbytestring) # pragma intrinsic(__inword) # pragma intrinsic(__inwordstring) # pragma intrinsic(__indword) # pragma intrinsic(__indwordstring) # pragma intrinsic(__invlpg) # pragma intrinsic(__wbinvd) # pragma intrinsic(__readcr0) # pragma intrinsic(__readcr2) # pragma intrinsic(__readcr3) # pragma intrinsic(__readcr4) # pragma intrinsic(__writecr0) # pragma intrinsic(__writecr3) # pragma intrinsic(__writecr4) # pragma intrinsic(__readdr) # pragma intrinsic(__writedr) # ifdef RT_ARCH_AMD64 # pragma intrinsic(__readcr8) # pragma intrinsic(__writecr8) # endif #endif /** @defgroup grp_rt_asm_amd64_x86 AMD64 and x86 Specific ASM Routines * @ingroup grp_rt_asm * @{ */ /** @todo find a more proper place for this structure? */ #pragma pack(1) /** IDTR */ typedef struct RTIDTR { /** Size of the IDT. */ uint16_t cbIdt; /** Address of the IDT. */ uintptr_t pIdt; } RTIDTR, *PRTIDTR; #pragma pack() #pragma pack(1) /** GDTR */ typedef struct RTGDTR { /** Size of the GDT. */ uint16_t cbGdt; /** Address of the GDT. */ uintptr_t pGdt; } RTGDTR, *PRTGDTR; #pragma pack() /** * Gets the content of the IDTR CPU register. * @param pIdtr Where to store the IDTR contents. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(void) ASMGetIDTR(PRTIDTR pIdtr); #else DECLINLINE(void) ASMGetIDTR(PRTIDTR pIdtr) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("sidt %0" : "=m" (*pIdtr)); # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [pIdtr] sidt [rax] # else mov eax, [pIdtr] sidt [eax] # endif } # endif } #endif /** * Sets the content of the IDTR CPU register. * @param pIdtr Where to load the IDTR contents from */ #if RT_INLINE_ASM_EXTERNAL DECLASM(void) ASMSetIDTR(const RTIDTR *pIdtr); #else DECLINLINE(void) ASMSetIDTR(const RTIDTR *pIdtr) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("lidt %0" : : "m" (*pIdtr)); # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [pIdtr] lidt [rax] # else mov eax, [pIdtr] lidt [eax] # endif } # endif } #endif /** * Gets the content of the GDTR CPU register. * @param pGdtr Where to store the GDTR contents. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(void) ASMGetGDTR(PRTGDTR pGdtr); #else DECLINLINE(void) ASMGetGDTR(PRTGDTR pGdtr) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("sgdt %0" : "=m" (*pGdtr)); # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [pGdtr] sgdt [rax] # else mov eax, [pGdtr] sgdt [eax] # endif } # endif } #endif /** * Get the cs register. * @returns cs. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(RTSEL) ASMGetCS(void); #else DECLINLINE(RTSEL) ASMGetCS(void) { RTSEL SelCS; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("movw %%cs, %0\n\t" : "=r" (SelCS)); # else __asm { mov ax, cs mov [SelCS], ax } # endif return SelCS; } #endif /** * Get the DS register. * @returns DS. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(RTSEL) ASMGetDS(void); #else DECLINLINE(RTSEL) ASMGetDS(void) { RTSEL SelDS; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("movw %%ds, %0\n\t" : "=r" (SelDS)); # else __asm { mov ax, ds mov [SelDS], ax } # endif return SelDS; } #endif /** * Get the ES register. * @returns ES. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(RTSEL) ASMGetES(void); #else DECLINLINE(RTSEL) ASMGetES(void) { RTSEL SelES; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("movw %%es, %0\n\t" : "=r" (SelES)); # else __asm { mov ax, es mov [SelES], ax } # endif return SelES; } #endif /** * Get the FS register. * @returns FS. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(RTSEL) ASMGetFS(void); #else DECLINLINE(RTSEL) ASMGetFS(void) { RTSEL SelFS; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("movw %%fs, %0\n\t" : "=r" (SelFS)); # else __asm { mov ax, fs mov [SelFS], ax } # endif return SelFS; } # endif /** * Get the GS register. * @returns GS. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(RTSEL) ASMGetGS(void); #else DECLINLINE(RTSEL) ASMGetGS(void) { RTSEL SelGS; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("movw %%gs, %0\n\t" : "=r" (SelGS)); # else __asm { mov ax, gs mov [SelGS], ax } # endif return SelGS; } #endif /** * Get the SS register. * @returns SS. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(RTSEL) ASMGetSS(void); #else DECLINLINE(RTSEL) ASMGetSS(void) { RTSEL SelSS; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("movw %%ss, %0\n\t" : "=r" (SelSS)); # else __asm { mov ax, ss mov [SelSS], ax } # endif return SelSS; } #endif /** * Get the TR register. * @returns TR. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(RTSEL) ASMGetTR(void); #else DECLINLINE(RTSEL) ASMGetTR(void) { RTSEL SelTR; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("str %w0\n\t" : "=r" (SelTR)); # else __asm { str ax mov [SelTR], ax } # endif return SelTR; } #endif /** * Get the [RE]FLAGS register. * @returns [RE]FLAGS. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(RTCCUINTREG) ASMGetFlags(void); #else DECLINLINE(RTCCUINTREG) ASMGetFlags(void) { RTCCUINTREG uFlags; # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("pushfq\n\t" "popq %0\n\t" : "=r" (uFlags)); # else __asm__ __volatile__("pushfl\n\t" "popl %0\n\t" : "=r" (uFlags)); # endif # else __asm { # ifdef RT_ARCH_AMD64 pushfq pop [uFlags] # else pushfd pop [uFlags] # endif } # endif return uFlags; } #endif /** * Set the [RE]FLAGS register. * @param uFlags The new [RE]FLAGS value. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(void) ASMSetFlags(RTCCUINTREG uFlags); #else DECLINLINE(void) ASMSetFlags(RTCCUINTREG uFlags) { # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("pushq %0\n\t" "popfq\n\t" : : "g" (uFlags)); # else __asm__ __volatile__("pushl %0\n\t" "popfl\n\t" : : "g" (uFlags)); # endif # else __asm { # ifdef RT_ARCH_AMD64 push [uFlags] popfq # else push [uFlags] popfd # endif } # endif } #endif /** * Gets the content of the CPU timestamp counter register. * * @returns TSC. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint64_t) ASMReadTSC(void); #else DECLINLINE(uint64_t) ASMReadTSC(void) { RTUINT64U u; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rdtsc\n\t" : "=a" (u.s.Lo), "=d" (u.s.Hi)); # else # if RT_INLINE_ASM_USES_INTRIN u.u = __rdtsc(); # else __asm { rdtsc mov [u.s.Lo], eax mov [u.s.Hi], edx } # endif # endif return u.u; } #endif /** * Performs the cpuid instruction returning all registers. * * @param uOperator CPUID operation (eax). * @param pvEAX Where to store eax. * @param pvEBX Where to store ebx. * @param pvECX Where to store ecx. * @param pvEDX Where to store edx. * @remark We're using void pointers to ease the use of special bitfield structures and such. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMCpuId(uint32_t uOperator, void *pvEAX, void *pvEBX, void *pvECX, void *pvEDX); #else DECLINLINE(void) ASMCpuId(uint32_t uOperator, void *pvEAX, void *pvEBX, void *pvECX, void *pvEDX) { # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 RTCCUINTREG uRAX, uRBX, uRCX, uRDX; __asm__ __volatile__ ("cpuid\n\t" : "=a" (uRAX), "=b" (uRBX), "=c" (uRCX), "=d" (uRDX) : "0" (uOperator), "2" (0)); *(uint32_t *)pvEAX = (uint32_t)uRAX; *(uint32_t *)pvEBX = (uint32_t)uRBX; *(uint32_t *)pvECX = (uint32_t)uRCX; *(uint32_t *)pvEDX = (uint32_t)uRDX; # else __asm__ __volatile__ ("xchgl %%ebx, %1\n\t" "cpuid\n\t" "xchgl %%ebx, %1\n\t" : "=a" (*(uint32_t *)pvEAX), "=r" (*(uint32_t *)pvEBX), "=c" (*(uint32_t *)pvECX), "=d" (*(uint32_t *)pvEDX) : "0" (uOperator), "2" (0)); # endif # elif RT_INLINE_ASM_USES_INTRIN int aInfo[4]; __cpuid(aInfo, uOperator); *(uint32_t *)pvEAX = aInfo[0]; *(uint32_t *)pvEBX = aInfo[1]; *(uint32_t *)pvECX = aInfo[2]; *(uint32_t *)pvEDX = aInfo[3]; # else uint32_t uEAX; uint32_t uEBX; uint32_t uECX; uint32_t uEDX; __asm { push ebx mov eax, [uOperator] cpuid mov [uEAX], eax mov [uEBX], ebx mov [uECX], ecx mov [uEDX], edx pop ebx } *(uint32_t *)pvEAX = uEAX; *(uint32_t *)pvEBX = uEBX; *(uint32_t *)pvECX = uECX; *(uint32_t *)pvEDX = uEDX; # endif } #endif /** * Performs the cpuid instruction returning all registers. * Some subfunctions of cpuid take ECX as additional parameter (currently known for EAX=4) * * @param uOperator CPUID operation (eax). * @param uIdxECX ecx index * @param pvEAX Where to store eax. * @param pvEBX Where to store ebx. * @param pvECX Where to store ecx. * @param pvEDX Where to store edx. * @remark We're using void pointers to ease the use of special bitfield structures and such. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMCpuId_Idx_ECX(uint32_t uOperator, uint32_t uIdxECX, void *pvEAX, void *pvEBX, void *pvECX, void *pvEDX); #else DECLINLINE(void) ASMCpuId_Idx_ECX(uint32_t uOperator, uint32_t uIdxECX, void *pvEAX, void *pvEBX, void *pvECX, void *pvEDX) { # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 RTCCUINTREG uRAX, uRBX, uRCX, uRDX; __asm__ ("cpuid\n\t" : "=a" (uRAX), "=b" (uRBX), "=c" (uRCX), "=d" (uRDX) : "0" (uOperator), "2" (uIdxECX)); *(uint32_t *)pvEAX = (uint32_t)uRAX; *(uint32_t *)pvEBX = (uint32_t)uRBX; *(uint32_t *)pvECX = (uint32_t)uRCX; *(uint32_t *)pvEDX = (uint32_t)uRDX; # else __asm__ ("xchgl %%ebx, %1\n\t" "cpuid\n\t" "xchgl %%ebx, %1\n\t" : "=a" (*(uint32_t *)pvEAX), "=r" (*(uint32_t *)pvEBX), "=c" (*(uint32_t *)pvECX), "=d" (*(uint32_t *)pvEDX) : "0" (uOperator), "2" (uIdxECX)); # endif # elif RT_INLINE_ASM_USES_INTRIN int aInfo[4]; /* ??? another intrinsic ??? */ __cpuid(aInfo, uOperator); *(uint32_t *)pvEAX = aInfo[0]; *(uint32_t *)pvEBX = aInfo[1]; *(uint32_t *)pvECX = aInfo[2]; *(uint32_t *)pvEDX = aInfo[3]; # else uint32_t uEAX; uint32_t uEBX; uint32_t uECX; uint32_t uEDX; __asm { push ebx mov eax, [uOperator] mov ecx, [uIdxECX] cpuid mov [uEAX], eax mov [uEBX], ebx mov [uECX], ecx mov [uEDX], edx pop ebx } *(uint32_t *)pvEAX = uEAX; *(uint32_t *)pvEBX = uEBX; *(uint32_t *)pvECX = uECX; *(uint32_t *)pvEDX = uEDX; # endif } #endif /** * Performs the cpuid instruction returning ecx and edx. * * @param uOperator CPUID operation (eax). * @param pvECX Where to store ecx. * @param pvEDX Where to store edx. * @remark We're using void pointers to ease the use of special bitfield structures and such. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMCpuId_ECX_EDX(uint32_t uOperator, void *pvECX, void *pvEDX); #else DECLINLINE(void) ASMCpuId_ECX_EDX(uint32_t uOperator, void *pvECX, void *pvEDX) { uint32_t uEBX; ASMCpuId(uOperator, &uOperator, &uEBX, pvECX, pvEDX); } #endif /** * Performs the cpuid instruction returning eax. * * @param uOperator CPUID operation (eax). * @returns EAX after cpuid operation. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint32_t) ASMCpuId_EAX(uint32_t uOperator); #else DECLINLINE(uint32_t) ASMCpuId_EAX(uint32_t uOperator) { RTCCUINTREG xAX; # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ ("cpuid" : "=a" (xAX) : "0" (uOperator) : "rbx", "rcx", "rdx"); # elif (defined(PIC) || defined(__PIC__)) && defined(__i386__) __asm__ ("push %%ebx\n\t" "cpuid\n\t" "pop %%ebx\n\t" : "=a" (xAX) : "0" (uOperator) : "ecx", "edx"); # else __asm__ ("cpuid" : "=a" (xAX) : "0" (uOperator) : "edx", "ecx", "ebx"); # endif # elif RT_INLINE_ASM_USES_INTRIN int aInfo[4]; __cpuid(aInfo, uOperator); xAX = aInfo[0]; # else __asm { push ebx mov eax, [uOperator] cpuid mov [xAX], eax pop ebx } # endif return (uint32_t)xAX; } #endif /** * Performs the cpuid instruction returning ebx. * * @param uOperator CPUID operation (eax). * @returns EBX after cpuid operation. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint32_t) ASMCpuId_EBX(uint32_t uOperator); #else DECLINLINE(uint32_t) ASMCpuId_EBX(uint32_t uOperator) { RTCCUINTREG xBX; # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 RTCCUINTREG uSpill; __asm__ ("cpuid" : "=a" (uSpill), "=b" (xBX) : "0" (uOperator) : "rdx", "rcx"); # elif (defined(PIC) || defined(__PIC__)) && defined(__i386__) __asm__ ("push %%ebx\n\t" "cpuid\n\t" "mov %%ebx, %%edx\n\t" "pop %%ebx\n\t" : "=a" (uOperator), "=d" (xBX) : "0" (uOperator) : "ecx"); # else __asm__ ("cpuid" : "=a" (uOperator), "=b" (xBX) : "0" (uOperator) : "edx", "ecx"); # endif # elif RT_INLINE_ASM_USES_INTRIN int aInfo[4]; __cpuid(aInfo, uOperator); xBX = aInfo[1]; # else __asm { push ebx mov eax, [uOperator] cpuid mov [xBX], ebx pop ebx } # endif return (uint32_t)xBX; } #endif /** * Performs the cpuid instruction returning ecx. * * @param uOperator CPUID operation (eax). * @returns ECX after cpuid operation. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint32_t) ASMCpuId_ECX(uint32_t uOperator); #else DECLINLINE(uint32_t) ASMCpuId_ECX(uint32_t uOperator) { RTCCUINTREG xCX; # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 RTCCUINTREG uSpill; __asm__ ("cpuid" : "=a" (uSpill), "=c" (xCX) : "0" (uOperator) : "rbx", "rdx"); # elif (defined(PIC) || defined(__PIC__)) && defined(__i386__) __asm__ ("push %%ebx\n\t" "cpuid\n\t" "pop %%ebx\n\t" : "=a" (uOperator), "=c" (xCX) : "0" (uOperator) : "edx"); # else __asm__ ("cpuid" : "=a" (uOperator), "=c" (xCX) : "0" (uOperator) : "ebx", "edx"); # endif # elif RT_INLINE_ASM_USES_INTRIN int aInfo[4]; __cpuid(aInfo, uOperator); xCX = aInfo[2]; # else __asm { push ebx mov eax, [uOperator] cpuid mov [xCX], ecx pop ebx } # endif return (uint32_t)xCX; } #endif /** * Performs the cpuid instruction returning edx. * * @param uOperator CPUID operation (eax). * @returns EDX after cpuid operation. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint32_t) ASMCpuId_EDX(uint32_t uOperator); #else DECLINLINE(uint32_t) ASMCpuId_EDX(uint32_t uOperator) { RTCCUINTREG xDX; # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 RTCCUINTREG uSpill; __asm__ ("cpuid" : "=a" (uSpill), "=d" (xDX) : "0" (uOperator) : "rbx", "rcx"); # elif (defined(PIC) || defined(__PIC__)) && defined(__i386__) __asm__ ("push %%ebx\n\t" "cpuid\n\t" "pop %%ebx\n\t" : "=a" (uOperator), "=d" (xDX) : "0" (uOperator) : "ecx"); # else __asm__ ("cpuid" : "=a" (uOperator), "=d" (xDX) : "0" (uOperator) : "ebx", "ecx"); # endif # elif RT_INLINE_ASM_USES_INTRIN int aInfo[4]; __cpuid(aInfo, uOperator); xDX = aInfo[3]; # else __asm { push ebx mov eax, [uOperator] cpuid mov [xDX], edx pop ebx } # endif return (uint32_t)xDX; } #endif /** * Checks if the current CPU supports CPUID. * * @returns true if CPUID is supported. */ DECLINLINE(bool) ASMHasCpuId(void) { #ifdef RT_ARCH_AMD64 return true; /* ASSUME that all amd64 compatible CPUs have cpuid. */ #else /* !RT_ARCH_AMD64 */ bool fRet = false; # if RT_INLINE_ASM_GNU_STYLE uint32_t u1; uint32_t u2; __asm__ ("pushf\n\t" "pop %1\n\t" "mov %1, %2\n\t" "xorl $0x200000, %1\n\t" "push %1\n\t" "popf\n\t" "pushf\n\t" "pop %1\n\t" "cmpl %1, %2\n\t" "setne %0\n\t" "push %2\n\t" "popf\n\t" : "=m" (fRet), "=r" (u1), "=r" (u2)); # else __asm { pushfd pop eax mov ebx, eax xor eax, 0200000h push eax popfd pushfd pop eax cmp eax, ebx setne fRet push ebx popfd } # endif return fRet; #endif /* !RT_ARCH_AMD64 */ } /** * Gets the APIC ID of the current CPU. * * @returns the APIC ID. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint8_t) ASMGetApicId(void); #else DECLINLINE(uint8_t) ASMGetApicId(void) { RTCCUINTREG xBX; # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 RTCCUINTREG uSpill; __asm__ __volatile__ ("cpuid" : "=a" (uSpill), "=b" (xBX) : "0" (1) : "rcx", "rdx"); # elif (defined(PIC) || defined(__PIC__)) && defined(__i386__) RTCCUINTREG uSpill; __asm__ __volatile__ ("mov %%ebx,%1\n\t" "cpuid\n\t" "xchgl %%ebx,%1\n\t" : "=a" (uSpill), "=rm" (xBX) : "0" (1) : "ecx", "edx"); # else RTCCUINTREG uSpill; __asm__ __volatile__ ("cpuid" : "=a" (uSpill), "=b" (xBX) : "0" (1) : "ecx", "edx"); # endif # elif RT_INLINE_ASM_USES_INTRIN int aInfo[4]; __cpuid(aInfo, 1); xBX = aInfo[1]; # else __asm { push ebx mov eax, 1 cpuid mov [xBX], ebx pop ebx } # endif return (uint8_t)(xBX >> 24); } #endif /** * Tests if it a genuine Intel CPU based on the ASMCpuId(0) output. * * @returns true/false. * @param uEBX EBX return from ASMCpuId(0) * @param uECX ECX return from ASMCpuId(0) * @param uEDX EDX return from ASMCpuId(0) */ DECLINLINE(bool) ASMIsIntelCpuEx(uint32_t uEBX, uint32_t uECX, uint32_t uEDX) { return uEBX == UINT32_C(0x756e6547) && uECX == UINT32_C(0x6c65746e) && uEDX == UINT32_C(0x49656e69); } /** * Tests if this is a genuine Intel CPU. * * @returns true/false. * @remarks ASSUMES that cpuid is supported by the CPU. */ DECLINLINE(bool) ASMIsIntelCpu(void) { uint32_t uEAX, uEBX, uECX, uEDX; ASMCpuId(0, &uEAX, &uEBX, &uECX, &uEDX); return ASMIsIntelCpuEx(uEBX, uECX, uEDX); } /** * Tests if it a authentic AMD CPU based on the ASMCpuId(0) output. * * @returns true/false. * @param uEBX EBX return from ASMCpuId(0) * @param uECX ECX return from ASMCpuId(0) * @param uEDX EDX return from ASMCpuId(0) */ DECLINLINE(bool) ASMIsAmdCpuEx(uint32_t uEBX, uint32_t uECX, uint32_t uEDX) { return uEBX == UINT32_C(0x68747541) && uECX == UINT32_C(0x444d4163) && uEDX == UINT32_C(0x69746e65); } /** * Tests if this is an authentic AMD CPU. * * @returns true/false. * @remarks ASSUMES that cpuid is supported by the CPU. */ DECLINLINE(bool) ASMIsAmdCpu(void) { uint32_t uEAX, uEBX, uECX, uEDX; ASMCpuId(0, &uEAX, &uEBX, &uECX, &uEDX); return ASMIsAmdCpuEx(uEBX, uECX, uEDX); } /** * Extracts the CPU family from ASMCpuId(1) or ASMCpuId(0x80000001) * * @returns Family. * @param uEAX EAX return from ASMCpuId(1) or ASMCpuId(0x80000001). */ DECLINLINE(uint32_t) ASMGetCpuFamily(uint32_t uEAX) { return ((uEAX >> 8) & 0xf) == 0xf ? ((uEAX >> 20) & 0x7f) + 0xf : ((uEAX >> 8) & 0xf); } /** * Extracts the CPU model from ASMCpuId(1) or ASMCpuId(0x80000001), Intel variant. * * @returns Model. * @param uEAX EAX from ASMCpuId(1) or ASMCpuId(0x80000001). */ DECLINLINE(uint32_t) ASMGetCpuModelIntel(uint32_t uEAX) { return ((uEAX >> 8) & 0xf) == 0xf || (((uEAX >> 8) & 0xf) == 0x6) /* family! */ ? ((uEAX >> 4) & 0xf) | ((uEAX >> 12) & 0xf0) : ((uEAX >> 4) & 0xf); } /** * Extracts the CPU model from ASMCpuId(1) or ASMCpuId(0x80000001), AMD variant. * * @returns Model. * @param uEAX EAX from ASMCpuId(1) or ASMCpuId(0x80000001). */ DECLINLINE(uint32_t) ASMGetCpuModelAMD(uint32_t uEAX) { return ((uEAX >> 8) & 0xf) == 0xf ? ((uEAX >> 4) & 0xf) | ((uEAX >> 12) & 0xf0) : ((uEAX >> 4) & 0xf); } /** * Extracts the CPU model from ASMCpuId(1) or ASMCpuId(0x80000001) * * @returns Model. * @param uEAX EAX from ASMCpuId(1) or ASMCpuId(0x80000001). * @param fIntel Whether it's an intel CPU. Use ASMIsIntelCpuEx() or ASMIsIntelCpu(). */ DECLINLINE(uint32_t) ASMGetCpuModel(uint32_t uEAX, bool fIntel) { return ((uEAX >> 8) & 0xf) == 0xf || (((uEAX >> 8) & 0xf) == 0x6 && fIntel) /* family! */ ? ((uEAX >> 4) & 0xf) | ((uEAX >> 12) & 0xf0) : ((uEAX >> 4) & 0xf); } /** * Extracts the CPU stepping from ASMCpuId(1) or ASMCpuId(0x80000001) * * @returns Model. * @param uEAX EAX from ASMCpuId(1) or ASMCpuId(0x80000001). */ DECLINLINE(uint32_t) ASMGetCpuStepping(uint32_t uEAX) { return uEAX & 0xf; } /** * Get cr0. * @returns cr0. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetCR0(void); #else DECLINLINE(RTCCUINTREG) ASMGetCR0(void) { RTCCUINTREG uCR0; # if RT_INLINE_ASM_USES_INTRIN uCR0 = __readcr0(); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%cr0, %0\t\n" : "=r" (uCR0)); # else __asm__ __volatile__("movl %%cr0, %0\t\n" : "=r" (uCR0)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, cr0 mov [uCR0], rax # else mov eax, cr0 mov [uCR0], eax # endif } # endif return uCR0; } #endif /** * Sets the CR0 register. * @param uCR0 The new CR0 value. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetCR0(RTCCUINTREG uCR0); #else DECLINLINE(void) ASMSetCR0(RTCCUINTREG uCR0) { # if RT_INLINE_ASM_USES_INTRIN __writecr0(uCR0); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%cr0\n\t" :: "r" (uCR0)); # else __asm__ __volatile__("movl %0, %%cr0\n\t" :: "r" (uCR0)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uCR0] mov cr0, rax # else mov eax, [uCR0] mov cr0, eax # endif } # endif } #endif /** * Get cr2. * @returns cr2. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetCR2(void); #else DECLINLINE(RTCCUINTREG) ASMGetCR2(void) { RTCCUINTREG uCR2; # if RT_INLINE_ASM_USES_INTRIN uCR2 = __readcr2(); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%cr2, %0\t\n" : "=r" (uCR2)); # else __asm__ __volatile__("movl %%cr2, %0\t\n" : "=r" (uCR2)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, cr2 mov [uCR2], rax # else mov eax, cr2 mov [uCR2], eax # endif } # endif return uCR2; } #endif /** * Sets the CR2 register. * @param uCR2 The new CR0 value. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(void) ASMSetCR2(RTCCUINTREG uCR2); #else DECLINLINE(void) ASMSetCR2(RTCCUINTREG uCR2) { # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%cr2\n\t" :: "r" (uCR2)); # else __asm__ __volatile__("movl %0, %%cr2\n\t" :: "r" (uCR2)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uCR2] mov cr2, rax # else mov eax, [uCR2] mov cr2, eax # endif } # endif } #endif /** * Get cr3. * @returns cr3. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetCR3(void); #else DECLINLINE(RTCCUINTREG) ASMGetCR3(void) { RTCCUINTREG uCR3; # if RT_INLINE_ASM_USES_INTRIN uCR3 = __readcr3(); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%cr3, %0\t\n" : "=r" (uCR3)); # else __asm__ __volatile__("movl %%cr3, %0\t\n" : "=r" (uCR3)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, cr3 mov [uCR3], rax # else mov eax, cr3 mov [uCR3], eax # endif } # endif return uCR3; } #endif /** * Sets the CR3 register. * * @param uCR3 New CR3 value. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetCR3(RTCCUINTREG uCR3); #else DECLINLINE(void) ASMSetCR3(RTCCUINTREG uCR3) { # if RT_INLINE_ASM_USES_INTRIN __writecr3(uCR3); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%cr3\n\t" : : "r" (uCR3)); # else __asm__ __volatile__("movl %0, %%cr3\n\t" : : "r" (uCR3)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uCR3] mov cr3, rax # else mov eax, [uCR3] mov cr3, eax # endif } # endif } #endif /** * Reloads the CR3 register. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMReloadCR3(void); #else DECLINLINE(void) ASMReloadCR3(void) { # if RT_INLINE_ASM_USES_INTRIN __writecr3(__readcr3()); # elif RT_INLINE_ASM_GNU_STYLE RTCCUINTREG u; # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%cr3, %0\n\t" "movq %0, %%cr3\n\t" : "=r" (u)); # else __asm__ __volatile__("movl %%cr3, %0\n\t" "movl %0, %%cr3\n\t" : "=r" (u)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, cr3 mov cr3, rax # else mov eax, cr3 mov cr3, eax # endif } # endif } #endif /** * Get cr4. * @returns cr4. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetCR4(void); #else DECLINLINE(RTCCUINTREG) ASMGetCR4(void) { RTCCUINTREG uCR4; # if RT_INLINE_ASM_USES_INTRIN uCR4 = __readcr4(); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%cr4, %0\t\n" : "=r" (uCR4)); # else __asm__ __volatile__("movl %%cr4, %0\t\n" : "=r" (uCR4)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, cr4 mov [uCR4], rax # else push eax /* just in case */ /*mov eax, cr4*/ _emit 0x0f _emit 0x20 _emit 0xe0 mov [uCR4], eax pop eax # endif } # endif return uCR4; } #endif /** * Sets the CR4 register. * * @param uCR4 New CR4 value. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetCR4(RTCCUINTREG uCR4); #else DECLINLINE(void) ASMSetCR4(RTCCUINTREG uCR4) { # if RT_INLINE_ASM_USES_INTRIN __writecr4(uCR4); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%cr4\n\t" : : "r" (uCR4)); # else __asm__ __volatile__("movl %0, %%cr4\n\t" : : "r" (uCR4)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uCR4] mov cr4, rax # else mov eax, [uCR4] _emit 0x0F _emit 0x22 _emit 0xE0 /* mov cr4, eax */ # endif } # endif } #endif /** * Get cr8. * @returns cr8. * @remark The lock prefix hack for access from non-64-bit modes is NOT used and 0 is returned. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetCR8(void); #else DECLINLINE(RTCCUINTREG) ASMGetCR8(void) { # ifdef RT_ARCH_AMD64 RTCCUINTREG uCR8; # if RT_INLINE_ASM_USES_INTRIN uCR8 = __readcr8(); # elif RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("movq %%cr8, %0\t\n" : "=r" (uCR8)); # else __asm { mov rax, cr8 mov [uCR8], rax } # endif return uCR8; # else /* !RT_ARCH_AMD64 */ return 0; # endif /* !RT_ARCH_AMD64 */ } #endif /** * Enables interrupts (EFLAGS.IF). */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMIntEnable(void); #else DECLINLINE(void) ASMIntEnable(void) { # if RT_INLINE_ASM_GNU_STYLE __asm("sti\n"); # elif RT_INLINE_ASM_USES_INTRIN _enable(); # else __asm sti # endif } #endif /** * Disables interrupts (!EFLAGS.IF). */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMIntDisable(void); #else DECLINLINE(void) ASMIntDisable(void) { # if RT_INLINE_ASM_GNU_STYLE __asm("cli\n"); # elif RT_INLINE_ASM_USES_INTRIN _disable(); # else __asm cli # endif } #endif /** * Disables interrupts and returns previous xFLAGS. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMIntDisableFlags(void); #else DECLINLINE(RTCCUINTREG) ASMIntDisableFlags(void) { RTCCUINTREG xFlags; # if RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("pushfq\n\t" "cli\n\t" "popq %0\n\t" : "=r" (xFlags)); # else __asm__ __volatile__("pushfl\n\t" "cli\n\t" "popl %0\n\t" : "=r" (xFlags)); # endif # elif RT_INLINE_ASM_USES_INTRIN && !defined(RT_ARCH_X86) xFlags = ASMGetFlags(); _disable(); # else __asm { pushfd cli pop [xFlags] } # endif return xFlags; } #endif /** * Are interrupts enabled? * * @returns true / false. */ DECLINLINE(RTCCUINTREG) ASMIntAreEnabled(void) { RTCCUINTREG uFlags = ASMGetFlags(); return uFlags & 0x200 /* X86_EFL_IF */ ? true : false; } /** * Halts the CPU until interrupted. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(void) ASMHalt(void); #else DECLINLINE(void) ASMHalt(void) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("hlt\n\t"); # else __asm { hlt } # endif } #endif /** * Reads a machine specific register. * * @returns Register content. * @param uRegister Register to read. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint64_t) ASMRdMsr(uint32_t uRegister); #else DECLINLINE(uint64_t) ASMRdMsr(uint32_t uRegister) { RTUINT64U u; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rdmsr\n\t" : "=a" (u.s.Lo), "=d" (u.s.Hi) : "c" (uRegister)); # elif RT_INLINE_ASM_USES_INTRIN u.u = __readmsr(uRegister); # else __asm { mov ecx, [uRegister] rdmsr mov [u.s.Lo], eax mov [u.s.Hi], edx } # endif return u.u; } #endif /** * Writes a machine specific register. * * @returns Register content. * @param uRegister Register to write to. * @param u64Val Value to write. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMWrMsr(uint32_t uRegister, uint64_t u64Val); #else DECLINLINE(void) ASMWrMsr(uint32_t uRegister, uint64_t u64Val) { RTUINT64U u; u.u = u64Val; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("wrmsr\n\t" ::"a" (u.s.Lo), "d" (u.s.Hi), "c" (uRegister)); # elif RT_INLINE_ASM_USES_INTRIN __writemsr(uRegister, u.u); # else __asm { mov ecx, [uRegister] mov edx, [u.s.Hi] mov eax, [u.s.Lo] wrmsr } # endif } #endif /** * Reads low part of a machine specific register. * * @returns Register content. * @param uRegister Register to read. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint32_t) ASMRdMsr_Low(uint32_t uRegister); #else DECLINLINE(uint32_t) ASMRdMsr_Low(uint32_t uRegister) { uint32_t u32; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rdmsr\n\t" : "=a" (u32) : "c" (uRegister) : "edx"); # elif RT_INLINE_ASM_USES_INTRIN u32 = (uint32_t)__readmsr(uRegister); #else __asm { mov ecx, [uRegister] rdmsr mov [u32], eax } # endif return u32; } #endif /** * Reads high part of a machine specific register. * * @returns Register content. * @param uRegister Register to read. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint32_t) ASMRdMsr_High(uint32_t uRegister); #else DECLINLINE(uint32_t) ASMRdMsr_High(uint32_t uRegister) { uint32_t u32; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rdmsr\n\t" : "=d" (u32) : "c" (uRegister) : "eax"); # elif RT_INLINE_ASM_USES_INTRIN u32 = (uint32_t)(__readmsr(uRegister) >> 32); # else __asm { mov ecx, [uRegister] rdmsr mov [u32], edx } # endif return u32; } #endif /** * Gets dr0. * * @returns dr0. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetDR0(void); #else DECLINLINE(RTCCUINTREG) ASMGetDR0(void) { RTCCUINTREG uDR0; # if RT_INLINE_ASM_USES_INTRIN uDR0 = __readdr(0); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%dr0, %0\n\t" : "=r" (uDR0)); # else __asm__ __volatile__("movl %%dr0, %0\n\t" : "=r" (uDR0)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, dr0 mov [uDR0], rax # else mov eax, dr0 mov [uDR0], eax # endif } # endif return uDR0; } #endif /** * Gets dr1. * * @returns dr1. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetDR1(void); #else DECLINLINE(RTCCUINTREG) ASMGetDR1(void) { RTCCUINTREG uDR1; # if RT_INLINE_ASM_USES_INTRIN uDR1 = __readdr(1); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%dr1, %0\n\t" : "=r" (uDR1)); # else __asm__ __volatile__("movl %%dr1, %0\n\t" : "=r" (uDR1)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, dr1 mov [uDR1], rax # else mov eax, dr1 mov [uDR1], eax # endif } # endif return uDR1; } #endif /** * Gets dr2. * * @returns dr2. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetDR2(void); #else DECLINLINE(RTCCUINTREG) ASMGetDR2(void) { RTCCUINTREG uDR2; # if RT_INLINE_ASM_USES_INTRIN uDR2 = __readdr(2); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%dr2, %0\n\t" : "=r" (uDR2)); # else __asm__ __volatile__("movl %%dr2, %0\n\t" : "=r" (uDR2)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, dr2 mov [uDR2], rax # else mov eax, dr2 mov [uDR2], eax # endif } # endif return uDR2; } #endif /** * Gets dr3. * * @returns dr3. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetDR3(void); #else DECLINLINE(RTCCUINTREG) ASMGetDR3(void) { RTCCUINTREG uDR3; # if RT_INLINE_ASM_USES_INTRIN uDR3 = __readdr(3); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%dr3, %0\n\t" : "=r" (uDR3)); # else __asm__ __volatile__("movl %%dr3, %0\n\t" : "=r" (uDR3)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, dr3 mov [uDR3], rax # else mov eax, dr3 mov [uDR3], eax # endif } # endif return uDR3; } #endif /** * Gets dr6. * * @returns dr6. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetDR6(void); #else DECLINLINE(RTCCUINTREG) ASMGetDR6(void) { RTCCUINTREG uDR6; # if RT_INLINE_ASM_USES_INTRIN uDR6 = __readdr(6); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%dr6, %0\n\t" : "=r" (uDR6)); # else __asm__ __volatile__("movl %%dr6, %0\n\t" : "=r" (uDR6)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, dr6 mov [uDR6], rax # else mov eax, dr6 mov [uDR6], eax # endif } # endif return uDR6; } #endif /** * Reads and clears DR6. * * @returns DR6. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetAndClearDR6(void); #else DECLINLINE(RTCCUINTREG) ASMGetAndClearDR6(void) { RTCCUINTREG uDR6; # if RT_INLINE_ASM_USES_INTRIN uDR6 = __readdr(6); __writedr(6, 0xffff0ff0U); /* 31-16 and 4-11 are 1's, 12 and 63-31 are zero. */ # elif RT_INLINE_ASM_GNU_STYLE RTCCUINTREG uNewValue = 0xffff0ff0U;/* 31-16 and 4-11 are 1's, 12 and 63-31 are zero. */ # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%dr6, %0\n\t" "movq %1, %%dr6\n\t" : "=r" (uDR6) : "r" (uNewValue)); # else __asm__ __volatile__("movl %%dr6, %0\n\t" "movl %1, %%dr6\n\t" : "=r" (uDR6) : "r" (uNewValue)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, dr6 mov [uDR6], rax mov rcx, rax mov ecx, 0ffff0ff0h; /* 31-16 and 4-11 are 1's, 12 and 63-31 are zero. */ mov dr6, rcx # else mov eax, dr6 mov [uDR6], eax mov ecx, 0ffff0ff0h; /* 31-16 and 4-11 are 1's, 12 is zero. */ mov dr6, ecx # endif } # endif return uDR6; } #endif /** * Gets dr7. * * @returns dr7. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(RTCCUINTREG) ASMGetDR7(void); #else DECLINLINE(RTCCUINTREG) ASMGetDR7(void) { RTCCUINTREG uDR7; # if RT_INLINE_ASM_USES_INTRIN uDR7 = __readdr(7); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %%dr7, %0\n\t" : "=r" (uDR7)); # else __asm__ __volatile__("movl %%dr7, %0\n\t" : "=r" (uDR7)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, dr7 mov [uDR7], rax # else mov eax, dr7 mov [uDR7], eax # endif } # endif return uDR7; } #endif /** * Sets dr0. * * @param uDRVal Debug register value to write */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetDR0(RTCCUINTREG uDRVal); #else DECLINLINE(void) ASMSetDR0(RTCCUINTREG uDRVal) { # if RT_INLINE_ASM_USES_INTRIN __writedr(0, uDRVal); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%dr0\n\t" : : "r" (uDRVal)); # else __asm__ __volatile__("movl %0, %%dr0\n\t" : : "r" (uDRVal)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uDRVal] mov dr0, rax # else mov eax, [uDRVal] mov dr0, eax # endif } # endif } #endif /** * Sets dr1. * * @param uDRVal Debug register value to write */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetDR1(RTCCUINTREG uDRVal); #else DECLINLINE(void) ASMSetDR1(RTCCUINTREG uDRVal) { # if RT_INLINE_ASM_USES_INTRIN __writedr(1, uDRVal); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%dr1\n\t" : : "r" (uDRVal)); # else __asm__ __volatile__("movl %0, %%dr1\n\t" : : "r" (uDRVal)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uDRVal] mov dr1, rax # else mov eax, [uDRVal] mov dr1, eax # endif } # endif } #endif /** * Sets dr2. * * @param uDRVal Debug register value to write */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetDR2(RTCCUINTREG uDRVal); #else DECLINLINE(void) ASMSetDR2(RTCCUINTREG uDRVal) { # if RT_INLINE_ASM_USES_INTRIN __writedr(2, uDRVal); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%dr2\n\t" : : "r" (uDRVal)); # else __asm__ __volatile__("movl %0, %%dr2\n\t" : : "r" (uDRVal)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uDRVal] mov dr2, rax # else mov eax, [uDRVal] mov dr2, eax # endif } # endif } #endif /** * Sets dr3. * * @param uDRVal Debug register value to write */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetDR3(RTCCUINTREG uDRVal); #else DECLINLINE(void) ASMSetDR3(RTCCUINTREG uDRVal) { # if RT_INLINE_ASM_USES_INTRIN __writedr(3, uDRVal); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%dr3\n\t" : : "r" (uDRVal)); # else __asm__ __volatile__("movl %0, %%dr3\n\t" : : "r" (uDRVal)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uDRVal] mov dr3, rax # else mov eax, [uDRVal] mov dr3, eax # endif } # endif } #endif /** * Sets dr6. * * @param uDRVal Debug register value to write */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetDR6(RTCCUINTREG uDRVal); #else DECLINLINE(void) ASMSetDR6(RTCCUINTREG uDRVal) { # if RT_INLINE_ASM_USES_INTRIN __writedr(6, uDRVal); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%dr6\n\t" : : "r" (uDRVal)); # else __asm__ __volatile__("movl %0, %%dr6\n\t" : : "r" (uDRVal)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uDRVal] mov dr6, rax # else mov eax, [uDRVal] mov dr6, eax # endif } # endif } #endif /** * Sets dr7. * * @param uDRVal Debug register value to write */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMSetDR7(RTCCUINTREG uDRVal); #else DECLINLINE(void) ASMSetDR7(RTCCUINTREG uDRVal) { # if RT_INLINE_ASM_USES_INTRIN __writedr(7, uDRVal); # elif RT_INLINE_ASM_GNU_STYLE # ifdef RT_ARCH_AMD64 __asm__ __volatile__("movq %0, %%dr7\n\t" : : "r" (uDRVal)); # else __asm__ __volatile__("movl %0, %%dr7\n\t" : : "r" (uDRVal)); # endif # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [uDRVal] mov dr7, rax # else mov eax, [uDRVal] mov dr7, eax # endif } # endif } #endif /** * Writes a 8-bit unsigned integer to an I/O port, ordered. * * @param Port I/O port to write to. * @param u8 8-bit integer to write. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMOutU8(RTIOPORT Port, uint8_t u8); #else DECLINLINE(void) ASMOutU8(RTIOPORT Port, uint8_t u8) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("outb %b1, %w0\n\t" :: "Nd" (Port), "a" (u8)); # elif RT_INLINE_ASM_USES_INTRIN __outbyte(Port, u8); # else __asm { mov dx, [Port] mov al, [u8] out dx, al } # endif } #endif /** * Reads a 8-bit unsigned integer from an I/O port, ordered. * * @returns 8-bit integer. * @param Port I/O port to read from. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint8_t) ASMInU8(RTIOPORT Port); #else DECLINLINE(uint8_t) ASMInU8(RTIOPORT Port) { uint8_t u8; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("inb %w1, %b0\n\t" : "=a" (u8) : "Nd" (Port)); # elif RT_INLINE_ASM_USES_INTRIN u8 = __inbyte(Port); # else __asm { mov dx, [Port] in al, dx mov [u8], al } # endif return u8; } #endif /** * Writes a 16-bit unsigned integer to an I/O port, ordered. * * @param Port I/O port to write to. * @param u16 16-bit integer to write. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMOutU16(RTIOPORT Port, uint16_t u16); #else DECLINLINE(void) ASMOutU16(RTIOPORT Port, uint16_t u16) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("outw %w1, %w0\n\t" :: "Nd" (Port), "a" (u16)); # elif RT_INLINE_ASM_USES_INTRIN __outword(Port, u16); # else __asm { mov dx, [Port] mov ax, [u16] out dx, ax } # endif } #endif /** * Reads a 16-bit unsigned integer from an I/O port, ordered. * * @returns 16-bit integer. * @param Port I/O port to read from. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint16_t) ASMInU16(RTIOPORT Port); #else DECLINLINE(uint16_t) ASMInU16(RTIOPORT Port) { uint16_t u16; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("inw %w1, %w0\n\t" : "=a" (u16) : "Nd" (Port)); # elif RT_INLINE_ASM_USES_INTRIN u16 = __inword(Port); # else __asm { mov dx, [Port] in ax, dx mov [u16], ax } # endif return u16; } #endif /** * Writes a 32-bit unsigned integer to an I/O port, ordered. * * @param Port I/O port to write to. * @param u32 32-bit integer to write. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMOutU32(RTIOPORT Port, uint32_t u32); #else DECLINLINE(void) ASMOutU32(RTIOPORT Port, uint32_t u32) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("outl %1, %w0\n\t" :: "Nd" (Port), "a" (u32)); # elif RT_INLINE_ASM_USES_INTRIN __outdword(Port, u32); # else __asm { mov dx, [Port] mov eax, [u32] out dx, eax } # endif } #endif /** * Reads a 32-bit unsigned integer from an I/O port, ordered. * * @returns 32-bit integer. * @param Port I/O port to read from. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(uint32_t) ASMInU32(RTIOPORT Port); #else DECLINLINE(uint32_t) ASMInU32(RTIOPORT Port) { uint32_t u32; # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("inl %w1, %0\n\t" : "=a" (u32) : "Nd" (Port)); # elif RT_INLINE_ASM_USES_INTRIN u32 = __indword(Port); # else __asm { mov dx, [Port] in eax, dx mov [u32], eax } # endif return u32; } #endif /** * Writes a string of 8-bit unsigned integer items to an I/O port, ordered. * * @param Port I/O port to write to. * @param pau8 Pointer to the string buffer. * @param c The number of items to write. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMOutStrU8(RTIOPORT Port, uint8_t const *pau8, size_t c); #else DECLINLINE(void) ASMOutStrU8(RTIOPORT Port, uint8_t const *pau8, size_t c) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rep; outsb\n\t" : "+S" (pau8), "+c" (c) : "d" (Port)); # elif RT_INLINE_ASM_USES_INTRIN __outbytestring(Port, (unsigned char *)pau8, (unsigned long)c); # else __asm { mov dx, [Port] mov ecx, [c] mov eax, [pau8] xchg esi, eax rep outsb xchg esi, eax } # endif } #endif /** * Reads a string of 8-bit unsigned integer items from an I/O port, ordered. * * @param Port I/O port to read from. * @param pau8 Pointer to the string buffer (output). * @param c The number of items to read. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMInStrU8(RTIOPORT Port, uint8_t *pau8, size_t c); #else DECLINLINE(void) ASMInStrU8(RTIOPORT Port, uint8_t *pau8, size_t c) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rep; insb\n\t" : "+D" (pau8), "+c" (c) : "d" (Port)); # elif RT_INLINE_ASM_USES_INTRIN __inbytestring(Port, pau8, (unsigned long)c); # else __asm { mov dx, [Port] mov ecx, [c] mov eax, [pau8] xchg edi, eax rep insb xchg edi, eax } # endif } #endif /** * Writes a string of 16-bit unsigned integer items to an I/O port, ordered. * * @param Port I/O port to write to. * @param pau16 Pointer to the string buffer. * @param c The number of items to write. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMOutStrU16(RTIOPORT Port, uint16_t const *pau16, size_t c); #else DECLINLINE(void) ASMOutStrU16(RTIOPORT Port, uint16_t const *pau16, size_t c) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rep; outsw\n\t" : "+S" (pau16), "+c" (c) : "d" (Port)); # elif RT_INLINE_ASM_USES_INTRIN __outwordstring(Port, (unsigned short *)pau16, (unsigned long)c); # else __asm { mov dx, [Port] mov ecx, [c] mov eax, [pau16] xchg esi, eax rep outsw xchg esi, eax } # endif } #endif /** * Reads a string of 16-bit unsigned integer items from an I/O port, ordered. * * @param Port I/O port to read from. * @param pau16 Pointer to the string buffer (output). * @param c The number of items to read. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMInStrU16(RTIOPORT Port, uint16_t *pau16, size_t c); #else DECLINLINE(void) ASMInStrU16(RTIOPORT Port, uint16_t *pau16, size_t c) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rep; insw\n\t" : "+D" (pau16), "+c" (c) : "d" (Port)); # elif RT_INLINE_ASM_USES_INTRIN __inwordstring(Port, pau16, (unsigned long)c); # else __asm { mov dx, [Port] mov ecx, [c] mov eax, [pau16] xchg edi, eax rep insw xchg edi, eax } # endif } #endif /** * Writes a string of 32-bit unsigned integer items to an I/O port, ordered. * * @param Port I/O port to write to. * @param pau32 Pointer to the string buffer. * @param c The number of items to write. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMOutStrU32(RTIOPORT Port, uint32_t const *pau32, size_t c); #else DECLINLINE(void) ASMOutStrU32(RTIOPORT Port, uint32_t const *pau32, size_t c) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rep; outsl\n\t" : "+S" (pau32), "+c" (c) : "d" (Port)); # elif RT_INLINE_ASM_USES_INTRIN __outdwordstring(Port, (unsigned long *)pau32, (unsigned long)c); # else __asm { mov dx, [Port] mov ecx, [c] mov eax, [pau32] xchg esi, eax rep outsd xchg esi, eax } # endif } #endif /** * Reads a string of 32-bit unsigned integer items from an I/O port, ordered. * * @param Port I/O port to read from. * @param pau32 Pointer to the string buffer (output). * @param c The number of items to read. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMInStrU32(RTIOPORT Port, uint32_t *pau32, size_t c); #else DECLINLINE(void) ASMInStrU32(RTIOPORT Port, uint32_t *pau32, size_t c) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("rep; insl\n\t" : "+D" (pau32), "+c" (c) : "d" (Port)); # elif RT_INLINE_ASM_USES_INTRIN __indwordstring(Port, (unsigned long *)pau32, (unsigned long)c); # else __asm { mov dx, [Port] mov ecx, [c] mov eax, [pau32] xchg edi, eax rep insd xchg edi, eax } # endif } #endif /** * Invalidate page. * * @param pv Address of the page to invalidate. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMInvalidatePage(void *pv); #else DECLINLINE(void) ASMInvalidatePage(void *pv) { # if RT_INLINE_ASM_USES_INTRIN __invlpg(pv); # elif RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("invlpg %0\n\t" : : "m" (*(uint8_t *)pv)); # else __asm { # ifdef RT_ARCH_AMD64 mov rax, [pv] invlpg [rax] # else mov eax, [pv] invlpg [eax] # endif } # endif } #endif /** * Write back the internal caches and invalidate them. */ #if RT_INLINE_ASM_EXTERNAL && !RT_INLINE_ASM_USES_INTRIN DECLASM(void) ASMWriteBackAndInvalidateCaches(void); #else DECLINLINE(void) ASMWriteBackAndInvalidateCaches(void) { # if RT_INLINE_ASM_USES_INTRIN __wbinvd(); # elif RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("wbinvd"); # else __asm { wbinvd } # endif } #endif /** * Invalidate internal and (perhaps) external caches without first * flushing dirty cache lines. Use with extreme care. */ #if RT_INLINE_ASM_EXTERNAL DECLASM(void) ASMInvalidateInternalCaches(void); #else DECLINLINE(void) ASMInvalidateInternalCaches(void) { # if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__("invd"); # else __asm { invd } # endif } #endif /** * Memory load/store fence, waits for any pending writes and reads to complete. * Requires the X86_CPUID_FEATURE_EDX_SSE2 CPUID bit set. */ DECLINLINE(void) ASMMemoryFenceSSE2(void) { #if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__ (".byte 0x0f,0xae,0xf0\n\t"); #elif RT_INLINE_ASM_USES_INTRIN _mm_mfence(); #else __asm { _emit 0x0f _emit 0xae _emit 0xf0 } #endif } /** * Memory store fence, waits for any writes to complete. * Requires the X86_CPUID_FEATURE_EDX_SSE CPUID bit set. */ DECLINLINE(void) ASMWriteFenceSSE(void) { #if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__ (".byte 0x0f,0xae,0xf8\n\t"); #elif RT_INLINE_ASM_USES_INTRIN _mm_sfence(); #else __asm { _emit 0x0f _emit 0xae _emit 0xf8 } #endif } /** * Memory load fence, waits for any pending reads to complete. * Requires the X86_CPUID_FEATURE_EDX_SSE2 CPUID bit set. */ DECLINLINE(void) ASMReadFenceSSE2(void) { #if RT_INLINE_ASM_GNU_STYLE __asm__ __volatile__ (".byte 0x0f,0xae,0xe8\n\t"); #elif RT_INLINE_ASM_USES_INTRIN _mm_lfence(); #else __asm { _emit 0x0f _emit 0xae _emit 0xe8 } #endif } /** @} */ #endif