include/asm-x86/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_PF   0x00000004 /* Parity Flag */
  10 #define X86_EFLAGS_AF   0x00000010 /* Auxillary carry Flag */
  11 #define X86_EFLAGS_ZF   0x00000040 /* Zero Flag */
  12 #define X86_EFLAGS_SF   0x00000080 /* Sign Flag */
  13 #define X86_EFLAGS_TF   0x00000100 /* Trap Flag */
  14 #define X86_EFLAGS_IF   0x00000200 /* Interrupt Flag */
  15 #define X86_EFLAGS_DF   0x00000400 /* Direction Flag */
  16 #define X86_EFLAGS_OF   0x00000800 /* Overflow Flag */
  17 #define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */
  18 #define X86_EFLAGS_NT   0x00004000 /* Nested Task */
  19 #define X86_EFLAGS_RF   0x00010000 /* Resume Flag */
  20 #define X86_EFLAGS_VM   0x00020000 /* Virtual Mode */
  21 #define X86_EFLAGS_AC   0x00040000 /* Alignment Check */
  22 #define X86_EFLAGS_VIF  0x00080000 /* Virtual Interrupt Flag */
  23 #define X86_EFLAGS_VIP  0x00100000 /* Virtual Interrupt Pending */
  24 #define X86_EFLAGS_ID   0x00200000 /* CPUID detection flag */
  25
  26 /*
  27  * Basic CPU control in CR0
  28  */
  29 #define X86_CR0_PE      0x00000001 /* Protection Enable */
  30 #define X86_CR0_MP      0x00000002 /* Monitor Coprocessor */
  31 #define X86_CR0_EM      0x00000004 /* Emulation */
  32 #define X86_CR0_TS      0x00000008 /* Task Switched */
  33 #define X86_CR0_ET      0x00000010 /* Extension Type */
  34 #define X86_CR0_NE      0x00000020 /* Numeric Error */
  35 #define X86_CR0_WP      0x00010000 /* Write Protect */
  36 #define X86_CR0_AM      0x00040000 /* Alignment Mask */
  37 #define X86_CR0_NW      0x20000000 /* Not Write-through */
  38 #define X86_CR0_CD      0x40000000 /* Cache Disable */
  39 #define X86_CR0_PG      0x80000000 /* Paging */
  40
  41 /*
  42  * Paging options in CR3
  43  */
  44 #define X86_CR3_PWT     0x00000008 /* Page Write Through */
  45 #define X86_CR3_PCD     0x00000010 /* Page Cache Disable */
  46
  47 /*
  48  * Intel CPU features in CR4
  49  */
  50 #define X86_CR4_VME     0x00000001 /* enable vm86 extensions */
  51 #define X86_CR4_PVI     0x00000002 /* virtual interrupts flag enable */
  52 #define X86_CR4_TSD     0x00000004 /* disable time stamp at ipl 3 */
  53 #define X86_CR4_DE      0x00000008 /* enable debugging extensions */
  54 #define X86_CR4_PSE     0x00000010 /* enable page size extensions */
  55 #define X86_CR4_PAE     0x00000020 /* enable physical address extensions */
  56 #define X86_CR4_MCE     0x00000040 /* Machine check enable */
  57 #define X86_CR4_PGE     0x00000080 /* enable global pages */
  58 #define X86_CR4_PCE     0x00000100 /* enable performance counters at ipl 3 */
  59 #define X86_CR4_OSFXSR  0x00000200 /* enable fast FPU save and restore */
  60 #define X86_CR4_OSXMMEXCPT 0x00000400 /* enable unmasked SSE exceptions */
  61 #define X86_CR4_VMXE    0x00002000 /* enable VMX virtualization */
  62
  63 /*
  64  * x86-64 Task Priority Register, CR8
  65  */
  66 #define X86_CR8_TPR     0x0000000F /* task priority register */
  67
  68 /*
  69  * AMD and Transmeta use MSRs for configuration; see <asm/msr-index.h>
  70  */
  71
  72 /*
  73  *      NSC/Cyrix CPU configuration register indexes
  74  */
  75 #define CX86_PCR0       0x20
  76 #define CX86_GCR        0xb8
  77 #define CX86_CCR0       0xc0
  78 #define CX86_CCR1       0xc1
  79 #define CX86_CCR2       0xc2
  80 #define CX86_CCR3       0xc3
  81 #define CX86_CCR4       0xe8
  82 #define CX86_CCR5       0xe9
  83 #define CX86_CCR6       0xea
  84 #define CX86_CCR7       0xeb
  85 #define CX86_PCR1       0xf0
  86 #define CX86_DIR0       0xfe
  87 #define CX86_DIR1       0xff
  88 #define CX86_ARR_BASE   0xc4
  89 #define CX86_RCR_BASE   0xdc
  90
  91 #ifdef __KERNEL__
  92 #ifdef CONFIG_VM86
  93 #define X86_VM_MASK     X86_EFLAGS_VM
  94 #else
  95 #define X86_VM_MASK     0 /* No VM86 support */
  96 #endif
  97 #endif
  98
  99 #endif /* ASM_X86__PROCESSOR_FLAGS_H */