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

   1 #ifndef _ASM_X86_PROCESSOR_FLAGS_H
   2 #define _ASM_X86_PROCESSOR_FLAGS_H
   3 /* Various flags defined: can be included from assembler. */
   4
   5 /*
   6  * EFLAGS bits
   7  */
   8 #define X86_EFLAGS_CF   0x00000001 /* Carry Flag */
   9 #define X86_EFLAGS_BIT1 0x00000002 /* Bit 1 - always on */
  10 #define X86_EFLAGS_PF   0x00000004 /* Parity Flag */
  11 #define X86_EFLAGS_AF   0x00000010 /* Auxiliary carry Flag */
  12 #define X86_EFLAGS_ZF   0x00000040 /* Zero Flag */
  13 #define X86_EFLAGS_SF   0x00000080 /* Sign Flag */
  14 #define X86_EFLAGS_TF   0x00000100 /* Trap Flag */
  15 #define X86_EFLAGS_IF   0x00000200 /* Interrupt Flag */
  16 #define X86_EFLAGS_DF   0x00000400 /* Direction Flag */
  17 #define X86_EFLAGS_OF   0x00000800 /* Overflow Flag */
  18 #define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
  19 #define X86_EFLAGS_NT   0x00004000 /* Nested Task */
  20 #define X86_EFLAGS_RF   0x00010000 /* Resume Flag */
  21 #define X86_EFLAGS_VM   0x00020000 /* Virtual Mode */
  22 #define X86_EFLAGS_AC   0x00040000 /* Alignment Check */
  23 #define X86_EFLAGS_VIF  0x00080000 /* Virtual Interrupt Flag */
  24 #define X86_EFLAGS_VIP  0x00100000 /* Virtual Interrupt Pending */
  25 #define X86_EFLAGS_ID   0x00200000 /* CPUID detection flag */
  26
  27 /*
  28  * Basic CPU control in CR0
  29  */
  30 #define X86_CR0_PE      0x00000001 /* Protection Enable */
  31 #define X86_CR0_MP      0x00000002 /* Monitor Coprocessor */
  32 #define X86_CR0_EM      0x00000004 /* Emulation */
  33 #define X86_CR0_TS      0x00000008 /* Task Switched */
  34 #define X86_CR0_ET      0x00000010 /* Extension Type */
  35 #define X86_CR0_NE      0x00000020 /* Numeric Error */
  36 #define X86_CR0_WP      0x00010000 /* Write Protect */
  37 #define X86_CR0_AM      0x00040000 /* Alignment Mask */
  38 #define X86_CR0_NW      0x20000000 /* Not Write-through */
  39 #define X86_CR0_CD      0x40000000 /* Cache Disable */
  40 #define X86_CR0_PG      0x80000000 /* Paging */
  41
  42 /*
  43  * Paging options in CR3
  44  */
  45 #define X86_CR3_PWT     0x00000008 /* Page Write Through */
  46 #define X86_CR3_PCD     0x00000010 /* Page Cache Disable */
  47
  48 /*
  49  * Intel CPU features in CR4
  50  */
  51 #define X86_CR4_VME     0x00000001 /* enable vm86 extensions */
  52 #define X86_CR4_PVI     0x00000002 /* virtual interrupts flag enable */
  53 #define X86_CR4_TSD     0x00000004 /* disable time stamp at ipl 3 */
  54 #define X86_CR4_DE      0x00000008 /* enable debugging extensions */
  55 #define X86_CR4_PSE     0x00000010 /* enable page size extensions */
  56 #define X86_CR4_PAE     0x00000020 /* enable physical address extensions */
  57 #define X86_CR4_MCE     0x00000040 /* Machine check enable */
  58 #define X86_CR4_PGE     0x00000080 /* enable global pages */
  59 #define X86_CR4_PCE     0x00000100 /* enable performance counters at ipl 3 */
  60 #define X86_CR4_OSFXSR  0x00000200 /* enable fast FPU save and restore */
  61 #define X86_CR4_OSXMMEXCPT 0x00000400 /* enable unmasked SSE exceptions */
  62 #define X86_CR4_VMXE    0x00002000 /* enable VMX virtualization */
  63 #define X86_CR4_RDWRGSFS 0x00010000 /* enable RDWRGSFS support */
  64 #define X86_CR4_OSXSAVE 0x00040000 /* enable xsave and xrestore */
  65 #define X86_CR4_SMEP    0x00100000 /* enable SMEP support */
  66
  67 /*
  68  * x86-64 Task Priority Register, CR8
  69  */
  70 #define X86_CR8_TPR     0x0000000F /* task priority register */
  71
  72 /*
  73  * AMD and Transmeta use MSRs for configuration; see <asm/msr-index.h>
  74  */
  75
  76 /*
  77  *      NSC/Cyrix CPU configuration register indexes
  78  */
  79 #define CX86_PCR0       0x20
  80 #define CX86_GCR        0xb8
  81 #define CX86_CCR0       0xc0
  82 #define CX86_CCR1       0xc1
  83 #define CX86_CCR2       0xc2
  84 #define CX86_CCR3       0xc3
  85 #define CX86_CCR4       0xe8
  86 #define CX86_CCR5       0xe9
  87 #define CX86_CCR6       0xea
  88 #define CX86_CCR7       0xeb
  89 #define CX86_PCR1       0xf0
  90 #define CX86_DIR0       0xfe
  91 #define CX86_DIR1       0xff
  92 #define CX86_ARR_BASE   0xc4
  93 #define CX86_RCR_BASE   0xdc
  94
  95 #ifdef __KERNEL__
  96 #ifdef CONFIG_VM86
  97 #define X86_VM_MASK     X86_EFLAGS_VM
  98 #else
  99 #define X86_VM_MASK     0 /* No VM86 support */
 100 #endif
 101 #endif
 102
 103 #endif /* _ASM_X86_PROCESSOR_FLAGS_H */