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processor-flags_x86.h

processor-flags_x86.h 7.0 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
    2. 

  2. #ifndef _ASM_X86_PROCESSOR_FLAGS_H
    3. 

  3. #define _ASM_X86_PROCESSOR_FLAGS_H
    4. 

  4. /* Various flags defined: can be included from assembler. */
    5. 

  5. 

  6. #include <linux/const.h>
    7. 

  7. 

  8. /*
    9. 

  9.  * EFLAGS bits
    10. 

  10.  */
    11. 

  11. #define X86_EFLAGS_CF_BIT	0 /* Carry Flag */
    12. 

  12. #define X86_EFLAGS_CF		_BITUL(X86_EFLAGS_CF_BIT)
    13. 

  13. #define X86_EFLAGS_FIXED_BIT	1 /* Bit 1 - always on */
    14. 

  14. #define X86_EFLAGS_FIXED	_BITUL(X86_EFLAGS_FIXED_BIT)
    15. 

  15. #define X86_EFLAGS_PF_BIT	2 /* Parity Flag */
    16. 

  16. #define X86_EFLAGS_PF		_BITUL(X86_EFLAGS_PF_BIT)
    17. 

  17. #define X86_EFLAGS_AF_BIT	4 /* Auxiliary carry Flag */
    18. 

  18. #define X86_EFLAGS_AF		_BITUL(X86_EFLAGS_AF_BIT)
    19. 

  19. #define X86_EFLAGS_ZF_BIT	6 /* Zero Flag */
    20. 

  20. #define X86_EFLAGS_ZF		_BITUL(X86_EFLAGS_ZF_BIT)
    21. 

  21. #define X86_EFLAGS_SF_BIT	7 /* Sign Flag */
    22. 

  22. #define X86_EFLAGS_SF		_BITUL(X86_EFLAGS_SF_BIT)
    23. 

  23. #define X86_EFLAGS_TF_BIT	8 /* Trap Flag */
    24. 

  24. #define X86_EFLAGS_TF		_BITUL(X86_EFLAGS_TF_BIT)
    25. 

  25. #define X86_EFLAGS_IF_BIT	9 /* Interrupt Flag */
    26. 

  26. #define X86_EFLAGS_IF		_BITUL(X86_EFLAGS_IF_BIT)
    27. 

  27. #define X86_EFLAGS_DF_BIT	10 /* Direction Flag */
    28. 

  28. #define X86_EFLAGS_DF		_BITUL(X86_EFLAGS_DF_BIT)
    29. 

  29. #define X86_EFLAGS_OF_BIT	11 /* Overflow Flag */
    30. 

  30. #define X86_EFLAGS_OF		_BITUL(X86_EFLAGS_OF_BIT)
    31. 

  31. #define X86_EFLAGS_IOPL_BIT	12 /* I/O Privilege Level (2 bits) */
    32. 

  32. #define X86_EFLAGS_IOPL		(_AC(3,UL) << X86_EFLAGS_IOPL_BIT)
    33. 

  33. #define X86_EFLAGS_NT_BIT	14 /* Nested Task */
    34. 

  34. #define X86_EFLAGS_NT		_BITUL(X86_EFLAGS_NT_BIT)
    35. 

  35. #define X86_EFLAGS_RF_BIT	16 /* Resume Flag */
    36. 

  36. #define X86_EFLAGS_RF		_BITUL(X86_EFLAGS_RF_BIT)
    37. 

  37. #define X86_EFLAGS_VM_BIT	17 /* Virtual Mode */
    38. 

  38. #define X86_EFLAGS_VM		_BITUL(X86_EFLAGS_VM_BIT)
    39. 

  39. #define X86_EFLAGS_AC_BIT	18 /* Alignment Check/Access Control */
    40. 

  40. #define X86_EFLAGS_AC		_BITUL(X86_EFLAGS_AC_BIT)
    41. 

  41. #define X86_EFLAGS_VIF_BIT	19 /* Virtual Interrupt Flag */
    42. 

  42. #define X86_EFLAGS_VIF		_BITUL(X86_EFLAGS_VIF_BIT)
    43. 

  43. #define X86_EFLAGS_VIP_BIT	20 /* Virtual Interrupt Pending */
    44. 

  44. #define X86_EFLAGS_VIP		_BITUL(X86_EFLAGS_VIP_BIT)
    45. 

  45. #define X86_EFLAGS_ID_BIT	21 /* CPUID detection */
    46. 

  46. #define X86_EFLAGS_ID		_BITUL(X86_EFLAGS_ID_BIT)
    47. 

  47. 

  48. /*
    49. 

  49.  * Basic CPU control in CR0
    50. 

  50.  */
    51. 

  51. #define X86_CR0_PE_BIT		0 /* Protection Enable */
    52. 

  52. #define X86_CR0_PE		_BITUL(X86_CR0_PE_BIT)
    53. 

  53. #define X86_CR0_MP_BIT		1 /* Monitor Coprocessor */
    54. 

  54. #define X86_CR0_MP		_BITUL(X86_CR0_MP_BIT)
    55. 

  55. #define X86_CR0_EM_BIT		2 /* Emulation */
    56. 

  56. #define X86_CR0_EM		_BITUL(X86_CR0_EM_BIT)
    57. 

  57. #define X86_CR0_TS_BIT		3 /* Task Switched */
    58. 

  58. #define X86_CR0_TS		_BITUL(X86_CR0_TS_BIT)
    59. 

  59. #define X86_CR0_ET_BIT		4 /* Extension Type */
    60. 

  60. #define X86_CR0_ET		_BITUL(X86_CR0_ET_BIT)
    61. 

  61. #define X86_CR0_NE_BIT		5 /* Numeric Error */
    62. 

  62. #define X86_CR0_NE		_BITUL(X86_CR0_NE_BIT)
    63. 

  63. #define X86_CR0_WP_BIT		16 /* Write Protect */
    64. 

  64. #define X86_CR0_WP		_BITUL(X86_CR0_WP_BIT)
    65. 

  65. #define X86_CR0_AM_BIT		18 /* Alignment Mask */
    66. 

  66. #define X86_CR0_AM		_BITUL(X86_CR0_AM_BIT)
    67. 

  67. #define X86_CR0_NW_BIT		29 /* Not Write-through */
    68. 

  68. #define X86_CR0_NW		_BITUL(X86_CR0_NW_BIT)
    69. 

  69. #define X86_CR0_CD_BIT		30 /* Cache Disable */
    70. 

  70. #define X86_CR0_CD		_BITUL(X86_CR0_CD_BIT)
    71. 

  71. #define X86_CR0_PG_BIT		31 /* Paging */
    72. 

  72. #define X86_CR0_PG		_BITUL(X86_CR0_PG_BIT)
    73. 

  73. 

  74. /*
    75. 

  75.  * Paging options in CR3
    76. 

  76.  */
    77. 

  77. #define X86_CR3_PWT_BIT		3 /* Page Write Through */
    78. 

  78. #define X86_CR3_PWT		_BITUL(X86_CR3_PWT_BIT)
    79. 

  79. #define X86_CR3_PCD_BIT		4 /* Page Cache Disable */
    80. 

  80. #define X86_CR3_PCD		_BITUL(X86_CR3_PCD_BIT)
    81. 

  81. 

  82. #define X86_CR3_PCID_BITS	12
    83. 

  83. #define X86_CR3_PCID_MASK	(_AC((1UL << X86_CR3_PCID_BITS) - 1, UL))
    84. 

  84. 

  85. #define X86_CR3_LAM_U57_BIT	61 /* Activate LAM for userspace, 62:57 bits masked */
    86. 

  86. #define X86_CR3_LAM_U57		_BITULL(X86_CR3_LAM_U57_BIT)
    87. 

  87. #define X86_CR3_LAM_U48_BIT	62 /* Activate LAM for userspace, 62:48 bits masked */
    88. 

  88. #define X86_CR3_LAM_U48		_BITULL(X86_CR3_LAM_U48_BIT)
    89. 

  89. #define X86_CR3_PCID_NOFLUSH_BIT 63 /* Preserve old PCID */
    90. 

  90. #define X86_CR3_PCID_NOFLUSH    _BITULL(X86_CR3_PCID_NOFLUSH_BIT)
    91. 

  91. 

  92. /*
    93. 

  93.  * Intel CPU features in CR4
    94. 

  94.  */
    95. 

  95. #define X86_CR4_VME_BIT		0 /* enable vm86 extensions */
    96. 

  96. #define X86_CR4_VME		_BITUL(X86_CR4_VME_BIT)
    97. 

  97. #define X86_CR4_PVI_BIT		1 /* virtual interrupts flag enable */
    98. 

  98. #define X86_CR4_PVI		_BITUL(X86_CR4_PVI_BIT)
    99. 

  99. #define X86_CR4_TSD_BIT		2 /* disable time stamp at ipl 3 */
    100. 

  100. #define X86_CR4_TSD		_BITUL(X86_CR4_TSD_BIT)
    101. 

  101. #define X86_CR4_DE_BIT		3 /* enable debugging extensions */
    102. 

  102. #define X86_CR4_DE		_BITUL(X86_CR4_DE_BIT)
    103. 

  103. #define X86_CR4_PSE_BIT		4 /* enable page size extensions */
    104. 

  104. #define X86_CR4_PSE		_BITUL(X86_CR4_PSE_BIT)
    105. 

  105. #define X86_CR4_PAE_BIT		5 /* enable physical address extensions */
    106. 

  106. #define X86_CR4_PAE		_BITUL(X86_CR4_PAE_BIT)
    107. 

  107. #define X86_CR4_MCE_BIT		6 /* Machine check enable */
    108. 

  108. #define X86_CR4_MCE		_BITUL(X86_CR4_MCE_BIT)
    109. 

  109. #define X86_CR4_PGE_BIT		7 /* enable global pages */
    110. 

  110. #define X86_CR4_PGE		_BITUL(X86_CR4_PGE_BIT)
    111. 

  111. #define X86_CR4_PCE_BIT		8 /* enable performance counters at ipl 3 */
    112. 

  112. #define X86_CR4_PCE		_BITUL(X86_CR4_PCE_BIT)
    113. 

  113. #define X86_CR4_OSFXSR_BIT	9 /* enable fast FPU save and restore */
    114. 

  114. #define X86_CR4_OSFXSR		_BITUL(X86_CR4_OSFXSR_BIT)
    115. 

  115. #define X86_CR4_OSXMMEXCPT_BIT	10 /* enable unmasked SSE exceptions */
    116. 

  116. #define X86_CR4_OSXMMEXCPT	_BITUL(X86_CR4_OSXMMEXCPT_BIT)
    117. 

  117. #define X86_CR4_UMIP_BIT	11 /* enable UMIP support */
    118. 

  118. #define X86_CR4_UMIP		_BITUL(X86_CR4_UMIP_BIT)
    119. 

  119. #define X86_CR4_LA57_BIT	12 /* enable 5-level page tables */
    120. 

  120. #define X86_CR4_LA57		_BITUL(X86_CR4_LA57_BIT)
    121. 

  121. #define X86_CR4_VMXE_BIT	13 /* enable VMX virtualization */
    122. 

  122. #define X86_CR4_VMXE		_BITUL(X86_CR4_VMXE_BIT)
    123. 

  123. #define X86_CR4_SMXE_BIT	14 /* enable safer mode (TXT) */
    124. 

  124. #define X86_CR4_SMXE		_BITUL(X86_CR4_SMXE_BIT)
    125. 

  125. #define X86_CR4_FSGSBASE_BIT	16 /* enable RDWRFSGS support */
    126. 

  126. #define X86_CR4_FSGSBASE	_BITUL(X86_CR4_FSGSBASE_BIT)
    127. 

  127. #define X86_CR4_PCIDE_BIT	17 /* enable PCID support */
    128. 

  128. #define X86_CR4_PCIDE		_BITUL(X86_CR4_PCIDE_BIT)
    129. 

  129. #define X86_CR4_OSXSAVE_BIT	18 /* enable xsave and xrestore */
    130. 

  130. #define X86_CR4_OSXSAVE		_BITUL(X86_CR4_OSXSAVE_BIT)
    131. 

  131. #define X86_CR4_SMEP_BIT	20 /* enable SMEP support */
    132. 

  132. #define X86_CR4_SMEP		_BITUL(X86_CR4_SMEP_BIT)
    133. 

  133. #define X86_CR4_SMAP_BIT	21 /* enable SMAP support */
    134. 

  134. #define X86_CR4_SMAP		_BITUL(X86_CR4_SMAP_BIT)
    135. 

  135. #define X86_CR4_PKE_BIT		22 /* enable Protection Keys support */
    136. 

  136. #define X86_CR4_PKE		_BITUL(X86_CR4_PKE_BIT)
    137. 

  137. #define X86_CR4_CET_BIT		23 /* enable Control-flow Enforcement Technology */
    138. 

  138. #define X86_CR4_CET		_BITUL(X86_CR4_CET_BIT)
    139. 

  139. #define X86_CR4_LAM_SUP_BIT	28 /* LAM for supervisor pointers */
    140. 

  140. #define X86_CR4_LAM_SUP		_BITUL(X86_CR4_LAM_SUP_BIT)
    141. 

  141. 

  142. /*
    143. 

  143.  * x86-64 Task Priority Register, CR8
    144. 

  144.  */
    145. 

  145. #define X86_CR8_TPR		_AC(0x0000000f,UL) /* task priority register */
    146. 

  146. 

  147. /*
    148. 

  148.  * AMD and Transmeta use MSRs for configuration; see <asm/msr-index.h>
    149. 

  149.  */
    150. 

  150. 

  151. /*
    152. 

  152.  *      NSC/Cyrix CPU configuration register indexes
    153. 

  153.  */
    154. 

  154. #define CX86_PCR0	0x20
    155. 

  155. #define CX86_GCR	0xb8
    156. 

  156. #define CX86_CCR0	0xc0
    157. 

  157. #define CX86_CCR1	0xc1
    158. 

  158. #define CX86_CCR2	0xc2
    159. 

  159. #define CX86_CCR3	0xc3
    160. 

  160. #define CX86_CCR4	0xe8
    161. 

  161. #define CX86_CCR5	0xe9
    162. 

  162. #define CX86_CCR6	0xea
    163. 

  163. #define CX86_CCR7	0xeb
    164. 

  164. #define CX86_PCR1	0xf0
    165. 

  165. #define CX86_DIR0	0xfe
    166. 

  166. #define CX86_DIR1	0xff
    167. 

  167. #define CX86_ARR_BASE	0xc4
    168. 

  168. #define CX86_RCR_BASE	0xdc
    169. 

  169. 

  170. #define CR0_STATE	(X86_CR0_PE | X86_CR0_MP | X86_CR0_ET | \
    171. 

  171. 			 X86_CR0_NE | X86_CR0_WP | X86_CR0_AM | \
    172. 

  172. 			 X86_CR0_PG)
    173. 

  173. 

  174. #endif /* _ASM_X86_PROCESSOR_FLAGS_H */
    175.