LXR linux/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_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#define X86_CR4_OSXSAVE 0x00040000 /* enable xsave and xrestore */
  63
  64/*
  65 * x86-64 Task Priority Register, CR8
  66 */
  67#define X86_CR8_TPR     0x0000000F /* task priority register */
  68
  69/*
  70 * AMD and Transmeta use MSRs for configuration; see <asm/msr-index.h>
  71 */
  72
  73/*
  74 *      NSC/Cyrix CPU configuration register indexes
  75 */
  76#define CX86_PCR0       0x20
  77#define CX86_GCR        0xb8
  78#define CX86_CCR0       0xc0
  79#define CX86_CCR1       0xc1
  80#define CX86_CCR2       0xc2
  81#define CX86_CCR3       0xc3
  82#define CX86_CCR4       0xe8
  83#define CX86_CCR5       0xe9
  84#define CX86_CCR6       0xea
  85#define CX86_CCR7       0xeb
  86#define CX86_PCR1       0xf0
  87#define CX86_DIR0       0xfe
  88#define CX86_DIR1       0xff
  89#define CX86_ARR_BASE   0xc4
  90#define CX86_RCR_BASE   0xdc
  91
  92#ifdef __KERNEL__
  93#ifdef CONFIG_VM86
  94#define X86_VM_MASK     X86_EFLAGS_VM
  95#else
  96#define X86_VM_MASK     0 /* No VM86 support */
  97#endif
  98#endif
  99
 100#endif /* _ASM_X86_PROCESSOR_FLAGS_H */
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