arch/x86/include/uapi/asm/processor-flags.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _UAPI_ASM_X86_PROCESSOR_FLAGS_H
   3 #define _UAPI_ASM_X86_PROCESSOR_FLAGS_H
   4 /* Various flags defined: can be included from assembler. */
   5
   6 #include <linux/const.h>
   7
   8 /*
   9  * EFLAGS bits
  10  */
  11 #define X86_EFLAGS_CF_BIT       0 /* Carry Flag */
  12 #define X86_EFLAGS_CF           _BITUL(X86_EFLAGS_CF_BIT)
  13 #define X86_EFLAGS_FIXED_BIT    1 /* Bit 1 - always on */
  14 #define X86_EFLAGS_FIXED        _BITUL(X86_EFLAGS_FIXED_BIT)
  15 #define X86_EFLAGS_PF_BIT       2 /* Parity Flag */
  16 #define X86_EFLAGS_PF           _BITUL(X86_EFLAGS_PF_BIT)
  17 #define X86_EFLAGS_AF_BIT       4 /* Auxiliary carry Flag */
  18 #define X86_EFLAGS_AF           _BITUL(X86_EFLAGS_AF_BIT)
  19 #define X86_EFLAGS_ZF_BIT       6 /* Zero Flag */
  20 #define X86_EFLAGS_ZF           _BITUL(X86_EFLAGS_ZF_BIT)
  21 #define X86_EFLAGS_SF_BIT       7 /* Sign Flag */
  22 #define X86_EFLAGS_SF           _BITUL(X86_EFLAGS_SF_BIT)
  23 #define X86_EFLAGS_TF_BIT       8 /* Trap Flag */
  24 #define X86_EFLAGS_TF           _BITUL(X86_EFLAGS_TF_BIT)
  25 #define X86_EFLAGS_IF_BIT       9 /* Interrupt Flag */
  26 #define X86_EFLAGS_IF           _BITUL(X86_EFLAGS_IF_BIT)
  27 #define X86_EFLAGS_DF_BIT       10 /* Direction Flag */
  28 #define X86_EFLAGS_DF           _BITUL(X86_EFLAGS_DF_BIT)
  29 #define X86_EFLAGS_OF_BIT       11 /* Overflow Flag */
  30 #define X86_EFLAGS_OF           _BITUL(X86_EFLAGS_OF_BIT)
  31 #define X86_EFLAGS_IOPL_BIT     12 /* I/O Privilege Level (2 bits) */
  32 #define X86_EFLAGS_IOPL         (_AC(3,UL) << X86_EFLAGS_IOPL_BIT)
  33 #define X86_EFLAGS_NT_BIT       14 /* Nested Task */
  34 #define X86_EFLAGS_NT           _BITUL(X86_EFLAGS_NT_BIT)
  35 #define X86_EFLAGS_RF_BIT       16 /* Resume Flag */
  36 #define X86_EFLAGS_RF           _BITUL(X86_EFLAGS_RF_BIT)
  37 #define X86_EFLAGS_VM_BIT       17 /* Virtual Mode */
  38 #define X86_EFLAGS_VM           _BITUL(X86_EFLAGS_VM_BIT)
  39 #define X86_EFLAGS_AC_BIT       18 /* Alignment Check/Access Control */
  40 #define X86_EFLAGS_AC           _BITUL(X86_EFLAGS_AC_BIT)
  41 #define X86_EFLAGS_VIF_BIT      19 /* Virtual Interrupt Flag */
  42 #define X86_EFLAGS_VIF          _BITUL(X86_EFLAGS_VIF_BIT)
  43 #define X86_EFLAGS_VIP_BIT      20 /* Virtual Interrupt Pending */
  44 #define X86_EFLAGS_VIP          _BITUL(X86_EFLAGS_VIP_BIT)
  45 #define X86_EFLAGS_ID_BIT       21 /* CPUID detection */
  46 #define X86_EFLAGS_ID           _BITUL(X86_EFLAGS_ID_BIT)
  47
  48 /*
  49  * Basic CPU control in CR0
  50  */
  51 #define X86_CR0_PE_BIT          0 /* Protection Enable */
  52 #define X86_CR0_PE              _BITUL(X86_CR0_PE_BIT)
  53 #define X86_CR0_MP_BIT          1 /* Monitor Coprocessor */
  54 #define X86_CR0_MP              _BITUL(X86_CR0_MP_BIT)
  55 #define X86_CR0_EM_BIT          2 /* Emulation */
  56 #define X86_CR0_EM              _BITUL(X86_CR0_EM_BIT)
  57 #define X86_CR0_TS_BIT          3 /* Task Switched */
  58 #define X86_CR0_TS              _BITUL(X86_CR0_TS_BIT)
  59 #define X86_CR0_ET_BIT          4 /* Extension Type */
  60 #define X86_CR0_ET              _BITUL(X86_CR0_ET_BIT)
  61 #define X86_CR0_NE_BIT          5 /* Numeric Error */
  62 #define X86_CR0_NE              _BITUL(X86_CR0_NE_BIT)
  63 #define X86_CR0_WP_BIT          16 /* Write Protect */
  64 #define X86_CR0_WP              _BITUL(X86_CR0_WP_BIT)
  65 #define X86_CR0_AM_BIT          18 /* Alignment Mask */
  66 #define X86_CR0_AM              _BITUL(X86_CR0_AM_BIT)
  67 #define X86_CR0_NW_BIT          29 /* Not Write-through */
  68 #define X86_CR0_NW              _BITUL(X86_CR0_NW_BIT)
  69 #define X86_CR0_CD_BIT          30 /* Cache Disable */
  70 #define X86_CR0_CD              _BITUL(X86_CR0_CD_BIT)
  71 #define X86_CR0_PG_BIT          31 /* Paging */
  72 #define X86_CR0_PG              _BITUL(X86_CR0_PG_BIT)
  73
  74 /*
  75  * Paging options in CR3
  76  */
  77 #define X86_CR3_PWT_BIT         3 /* Page Write Through */
  78 #define X86_CR3_PWT             _BITUL(X86_CR3_PWT_BIT)
  79 #define X86_CR3_PCD_BIT         4 /* Page Cache Disable */
  80 #define X86_CR3_PCD             _BITUL(X86_CR3_PCD_BIT)
  81
  82 #define X86_CR3_PCID_BITS       12
  83 #define X86_CR3_PCID_MASK       (_AC((1UL << X86_CR3_PCID_BITS) - 1, UL))
  84
  85 #define X86_CR3_PCID_NOFLUSH_BIT 63 /* Preserve old PCID */
  86 #define X86_CR3_PCID_NOFLUSH    _BITULL(X86_CR3_PCID_NOFLUSH_BIT)
  87
  88 /*
  89  * Intel CPU features in CR4
  90  */
  91 #define X86_CR4_VME_BIT         0 /* enable vm86 extensions */
  92 #define X86_CR4_VME             _BITUL(X86_CR4_VME_BIT)
  93 #define X86_CR4_PVI_BIT         1 /* virtual interrupts flag enable */
  94 #define X86_CR4_PVI             _BITUL(X86_CR4_PVI_BIT)
  95 #define X86_CR4_TSD_BIT         2 /* disable time stamp at ipl 3 */
  96 #define X86_CR4_TSD             _BITUL(X86_CR4_TSD_BIT)
  97 #define X86_CR4_DE_BIT          3 /* enable debugging extensions */
  98 #define X86_CR4_DE              _BITUL(X86_CR4_DE_BIT)
  99 #define X86_CR4_PSE_BIT         4 /* enable page size extensions */
 100 #define X86_CR4_PSE             _BITUL(X86_CR4_PSE_BIT)
 101 #define X86_CR4_PAE_BIT         5 /* enable physical address extensions */
 102 #define X86_CR4_PAE             _BITUL(X86_CR4_PAE_BIT)
 103 #define X86_CR4_MCE_BIT         6 /* Machine check enable */
 104 #define X86_CR4_MCE             _BITUL(X86_CR4_MCE_BIT)
 105 #define X86_CR4_PGE_BIT         7 /* enable global pages */
 106 #define X86_CR4_PGE             _BITUL(X86_CR4_PGE_BIT)
 107 #define X86_CR4_PCE_BIT         8 /* enable performance counters at ipl 3 */
 108 #define X86_CR4_PCE             _BITUL(X86_CR4_PCE_BIT)
 109 #define X86_CR4_OSFXSR_BIT      9 /* enable fast FPU save and restore */
 110 #define X86_CR4_OSFXSR          _BITUL(X86_CR4_OSFXSR_BIT)
 111 #define X86_CR4_OSXMMEXCPT_BIT  10 /* enable unmasked SSE exceptions */
 112 #define X86_CR4_OSXMMEXCPT      _BITUL(X86_CR4_OSXMMEXCPT_BIT)
 113 #define X86_CR4_UMIP_BIT        11 /* enable UMIP support */
 114 #define X86_CR4_UMIP            _BITUL(X86_CR4_UMIP_BIT)
 115 #define X86_CR4_LA57_BIT        12 /* enable 5-level page tables */
 116 #define X86_CR4_LA57            _BITUL(X86_CR4_LA57_BIT)
 117 #define X86_CR4_VMXE_BIT        13 /* enable VMX virtualization */
 118 #define X86_CR4_VMXE            _BITUL(X86_CR4_VMXE_BIT)
 119 #define X86_CR4_SMXE_BIT        14 /* enable safer mode (TXT) */
 120 #define X86_CR4_SMXE            _BITUL(X86_CR4_SMXE_BIT)
 121 #define X86_CR4_FSGSBASE_BIT    16 /* enable RDWRFSGS support */
 122 #define X86_CR4_FSGSBASE        _BITUL(X86_CR4_FSGSBASE_BIT)
 123 #define X86_CR4_PCIDE_BIT       17 /* enable PCID support */
 124 #define X86_CR4_PCIDE           _BITUL(X86_CR4_PCIDE_BIT)
 125 #define X86_CR4_OSXSAVE_BIT     18 /* enable xsave and xrestore */
 126 #define X86_CR4_OSXSAVE         _BITUL(X86_CR4_OSXSAVE_BIT)
 127 #define X86_CR4_SMEP_BIT        20 /* enable SMEP support */
 128 #define X86_CR4_SMEP            _BITUL(X86_CR4_SMEP_BIT)
 129 #define X86_CR4_SMAP_BIT        21 /* enable SMAP support */
 130 #define X86_CR4_SMAP            _BITUL(X86_CR4_SMAP_BIT)
 131 #define X86_CR4_PKE_BIT         22 /* enable Protection Keys support */
 132 #define X86_CR4_PKE             _BITUL(X86_CR4_PKE_BIT)
 133
 134 /*
 135  * x86-64 Task Priority Register, CR8
 136  */
 137 #define X86_CR8_TPR             _AC(0x0000000f,UL) /* task priority register */
 138
 139 /*
 140  * AMD and Transmeta use MSRs for configuration; see <asm/msr-index.h>
 141  */
 142
 143 /*
 144  *      NSC/Cyrix CPU configuration register indexes
 145  */
 146 #define CX86_PCR0       0x20
 147 #define CX86_GCR        0xb8
 148 #define CX86_CCR0       0xc0
 149 #define CX86_CCR1       0xc1
 150 #define CX86_CCR2       0xc2
 151 #define CX86_CCR3       0xc3
 152 #define CX86_CCR4       0xe8
 153 #define CX86_CCR5       0xe9
 154 #define CX86_CCR6       0xea
 155 #define CX86_CCR7       0xeb
 156 #define CX86_PCR1       0xf0
 157 #define CX86_DIR0       0xfe
 158 #define CX86_DIR1       0xff
 159 #define CX86_ARR_BASE   0xc4
 160 #define CX86_RCR_BASE   0xdc
 161
 162 #define CR0_STATE       (X86_CR0_PE | X86_CR0_MP | X86_CR0_ET | \
 163                          X86_CR0_NE | X86_CR0_WP | X86_CR0_AM | \
 164                          X86_CR0_PG)
 165
 166 #endif /* _UAPI_ASM_X86_PROCESSOR_FLAGS_H */