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1/*===------------------ uintrintrin.h - UINTR intrinsics -------------------===2 *3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4 * See https://llvm.org/LICENSE.txt for license information.5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6 *7 *===-----------------------------------------------------------------------===8 */9 10#ifndef __X86GPRINTRIN_H11#error "Never use <uintrintrin.h> directly; include <x86gprintrin.h> instead."12#endif13 14#ifndef __UINTRINTRIN_H15#define __UINTRINTRIN_H16 17/* Define the default attributes for the functions in this file */18#define __DEFAULT_FN_ATTRS \19 __attribute__((__always_inline__, __nodebug__, __target__("uintr")))20 21#ifdef __x86_64__22 23struct __uintr_frame24{25 unsigned long long rip;26 unsigned long long rflags;27 unsigned long long rsp;28};29 30/// Clears the user interrupt flag (UIF). Its effect takes place immediately: a31/// user interrupt cannot be delivered on the instruction boundary following32/// CLUI. Can be executed only if CR4.UINT = 1, the logical processor is in33/// 64-bit mode, and software is not executing inside an enclave; otherwise,34/// each causes an invalid-opcode exception. Causes a transactional abort if35/// executed inside a transactional region; the abort loads EAX as it would36/// had it been due to an execution of CLI.37///38/// \headerfile <x86gprintrin.h>39///40/// This intrinsic corresponds to the <c> CLUI </c> instruction.41///42/// \code{.operation}43/// UIF := 044/// \endcode45static __inline__ void __DEFAULT_FN_ATTRS46_clui (void)47{48 __builtin_ia32_clui();49}50 51/// Sets the user interrupt flag (UIF). Its effect takes place immediately; a52/// user interrupt may be delivered on the instruction boundary following53/// STUI. Can be executed only if CR4.UINT = 1, the logical processor is in54/// 64-bit mode, and software is not executing inside an enclave; otherwise,55/// each causes an invalid-opcode exception. Causes a transactional abort if56/// executed inside a transactional region; the abort loads EAX as it would57/// had it been due to an execution of STI.58///59/// \headerfile <x86gprintrin.h>60///61/// This intrinsic corresponds to the <c> STUI </c> instruction.62///63/// \code{.operation}64/// UIF := 165/// \endcode66static __inline__ void __DEFAULT_FN_ATTRS67_stui (void)68{69 __builtin_ia32_stui();70}71 72/// Get the current value of the user interrupt flag (UIF). Can be executed73/// regardless of CPL and inside a transactional region. Can be executed only74/// if CR4.UINT = 1, the logical processor is in 64-bit mode, and software is75/// not executing inside an enclave; otherwise, it causes an invalid-opcode76/// exception.77///78/// \headerfile <x86gprintrin.h>79///80/// This intrinsic corresponds to the <c> TESTUI </c> instruction.81///82/// \returns The current value of the user interrupt flag (UIF).83///84/// \code{.operation}85/// CF := UIF86/// ZF := 087/// AF := 088/// OF := 089/// PF := 090/// SF := 091/// dst := CF92/// \endcode93static __inline__ unsigned char __DEFAULT_FN_ATTRS94_testui (void)95{96 return __builtin_ia32_testui();97}98 99/// Send interprocessor user interrupt. Can be executed only if100/// CR4.UINT = IA32_UINT_TT[0] = 1, the logical processor is in 64-bit mode,101/// and software is not executing inside an enclave; otherwise, it causes an102/// invalid-opcode exception. May be executed at any privilege level, all of103/// its memory accesses are performed with supervisor privilege.104///105/// \headerfile <x86gprintrin.h>106///107/// This intrinsic corresponds to the <c> SENDUIPI </c> instruction108///109/// \param __a110/// Index of user-interrupt target table entry in user-interrupt target111/// table.112///113/// \code{.operation}114/// IF __a > UITTSZ115/// GP (0)116/// FI117/// tempUITTE := MEM[UITTADDR + (a<<4)]118/// // tempUITTE must be valid, and can't have any reserved bit set119/// IF (tempUITTE.V == 0 OR tempUITTE[7:1] != 0)120/// GP (0)121/// FI122/// tempUPID := MEM[tempUITTE.UPIDADDR] // under lock123/// // tempUPID can't have any reserved bit set124/// IF (tempUPID[15:2] != 0 OR tempUPID[31:24] != 0)125/// GP (0) // release lock126/// FI127/// tempUPID.PIR[tempUITTE.UV] := 1;128/// IF (tempUPID.SN == 0 AND tempUPID.ON == 0)129/// tempUPID.ON := 1130/// sendNotify := 1131/// ELSE132/// sendNotify := 0133/// FI134/// MEM[tempUITTE.UPIDADDR] := tempUPID // release lock135/// IF sendNotify == 1136/// IF IA32_APIC_BASE[10] == 1 // local APIC is in x2APIC mode137/// // send ordinary IPI with vector tempUPID.NV to 32-bit physical APIC138/// // ID tempUPID.NDST139/// SendOrdinaryIPI(tempUPID.NV, tempUPID.NDST)140/// ELSE141/// // send ordinary IPI with vector tempUPID.NV to 8-bit physical APIC142/// // ID tempUPID.NDST[15:8]143/// SendOrdinaryIPI(tempUPID.NV, tempUPID.NDST[15:8])144/// FI145/// FI146/// \endcode147static __inline__ void __DEFAULT_FN_ATTRS148_senduipi (unsigned long long __a)149{150 __builtin_ia32_senduipi(__a);151}152 153#endif /* __x86_64__ */154 155#undef __DEFAULT_FN_ATTRS156 157#endif /* __UINTRINTRIN_H */158