processor-flags.h 3.6 KB

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  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. * EFLAGS bits
  6. */
  7. #define X86_EFLAGS_CF 0x00000001 /* Carry Flag */
  8. #define X86_EFLAGS_BIT1 0x00000002 /* Bit 1 - always on */
  9. #define X86_EFLAGS_PF 0x00000004 /* Parity Flag */
  10. #define X86_EFLAGS_AF 0x00000010 /* Auxiliary 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. * Basic CPU control in CR0
  27. */
  28. #define X86_CR0_PE 0x00000001 /* Protection Enable */
  29. #define X86_CR0_MP 0x00000002 /* Monitor Coprocessor */
  30. #define X86_CR0_EM 0x00000004 /* Emulation */
  31. #define X86_CR0_TS 0x00000008 /* Task Switched */
  32. #define X86_CR0_ET 0x00000010 /* Extension Type */
  33. #define X86_CR0_NE 0x00000020 /* Numeric Error */
  34. #define X86_CR0_WP 0x00010000 /* Write Protect */
  35. #define X86_CR0_AM 0x00040000 /* Alignment Mask */
  36. #define X86_CR0_NW 0x20000000 /* Not Write-through */
  37. #define X86_CR0_CD 0x40000000 /* Cache Disable */
  38. #define X86_CR0_PG 0x80000000 /* Paging */
  39. /*
  40. * Paging options in CR3
  41. */
  42. #define X86_CR3_PWT 0x00000008 /* Page Write Through */
  43. #define X86_CR3_PCD 0x00000010 /* Page Cache Disable */
  44. /*
  45. * Intel CPU features in CR4
  46. */
  47. #define X86_CR4_VME 0x00000001 /* enable vm86 extensions */
  48. #define X86_CR4_PVI 0x00000002 /* virtual interrupts flag enable */
  49. #define X86_CR4_TSD 0x00000004 /* disable time stamp at ipl 3 */
  50. #define X86_CR4_DE 0x00000008 /* enable debugging extensions */
  51. #define X86_CR4_PSE 0x00000010 /* enable page size extensions */
  52. #define X86_CR4_PAE 0x00000020 /* enable physical address extensions */
  53. #define X86_CR4_MCE 0x00000040 /* Machine check enable */
  54. #define X86_CR4_PGE 0x00000080 /* enable global pages */
  55. #define X86_CR4_PCE 0x00000100 /* enable performance counters at ipl 3 */
  56. #define X86_CR4_OSFXSR 0x00000200 /* enable fast FPU save and restore */
  57. #define X86_CR4_OSXMMEXCPT 0x00000400 /* enable unmasked SSE exceptions */
  58. #define X86_CR4_VMXE 0x00002000 /* enable VMX virtualization */
  59. #define X86_CR4_RDWRGSFS 0x00010000 /* enable RDWRGSFS support */
  60. #define X86_CR4_OSXSAVE 0x00040000 /* enable xsave and xrestore */
  61. #define X86_CR4_SMEP 0x00100000 /* enable SMEP support */
  62. /*
  63. * x86-64 Task Priority Register, CR8
  64. */
  65. #define X86_CR8_TPR 0x0000000F /* task priority register */
  66. /*
  67. * AMD and Transmeta use MSRs for configuration; see <asm/msr-index.h>
  68. */
  69. /*
  70. * NSC/Cyrix CPU configuration register indexes
  71. */
  72. #define CX86_PCR0 0x20
  73. #define CX86_GCR 0xb8
  74. #define CX86_CCR0 0xc0
  75. #define CX86_CCR1 0xc1
  76. #define CX86_CCR2 0xc2
  77. #define CX86_CCR3 0xc3
  78. #define CX86_CCR4 0xe8
  79. #define CX86_CCR5 0xe9
  80. #define CX86_CCR6 0xea
  81. #define CX86_CCR7 0xeb
  82. #define CX86_PCR1 0xf0
  83. #define CX86_DIR0 0xfe
  84. #define CX86_DIR1 0xff
  85. #define CX86_ARR_BASE 0xc4
  86. #define CX86_RCR_BASE 0xdc
  87. #ifdef __KERNEL__
  88. #ifdef CONFIG_VM86
  89. #define X86_VM_MASK X86_EFLAGS_VM
  90. #else
  91. #define X86_VM_MASK 0 /* No VM86 support */
  92. #endif
  93. #endif
  94. #endif /* _ASM_X86_PROCESSOR_FLAGS_H */