• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_ASM_X86_PROCESSOR_FLAGS_H
3 #define _UAPI_ASM_X86_PROCESSOR_FLAGS_H
4 /* Various flags defined: can be included from assembler. */
5 
6 #include <linux/const.h>
7 
8 /*
9  * EFLAGS bits
10  */
11 #define X86_EFLAGS_CF_BIT	0 /* Carry Flag */
12 #define X86_EFLAGS_CF		_BITUL(X86_EFLAGS_CF_BIT)
13 #define X86_EFLAGS_FIXED_BIT	1 /* Bit 1 - always on */
14 #define X86_EFLAGS_FIXED	_BITUL(X86_EFLAGS_FIXED_BIT)
15 #define X86_EFLAGS_PF_BIT	2 /* Parity Flag */
16 #define X86_EFLAGS_PF		_BITUL(X86_EFLAGS_PF_BIT)
17 #define X86_EFLAGS_AF_BIT	4 /* Auxiliary carry Flag */
18 #define X86_EFLAGS_AF		_BITUL(X86_EFLAGS_AF_BIT)
19 #define X86_EFLAGS_ZF_BIT	6 /* Zero Flag */
20 #define X86_EFLAGS_ZF		_BITUL(X86_EFLAGS_ZF_BIT)
21 #define X86_EFLAGS_SF_BIT	7 /* Sign Flag */
22 #define X86_EFLAGS_SF		_BITUL(X86_EFLAGS_SF_BIT)
23 #define X86_EFLAGS_TF_BIT	8 /* Trap Flag */
24 #define X86_EFLAGS_TF		_BITUL(X86_EFLAGS_TF_BIT)
25 #define X86_EFLAGS_IF_BIT	9 /* Interrupt Flag */
26 #define X86_EFLAGS_IF		_BITUL(X86_EFLAGS_IF_BIT)
27 #define X86_EFLAGS_DF_BIT	10 /* Direction Flag */
28 #define X86_EFLAGS_DF		_BITUL(X86_EFLAGS_DF_BIT)
29 #define X86_EFLAGS_OF_BIT	11 /* Overflow Flag */
30 #define X86_EFLAGS_OF		_BITUL(X86_EFLAGS_OF_BIT)
31 #define X86_EFLAGS_IOPL_BIT	12 /* I/O Privilege Level (2 bits) */
32 #define X86_EFLAGS_IOPL		(_AC(3,UL) << X86_EFLAGS_IOPL_BIT)
33 #define X86_EFLAGS_NT_BIT	14 /* Nested Task */
34 #define X86_EFLAGS_NT		_BITUL(X86_EFLAGS_NT_BIT)
35 #define X86_EFLAGS_RF_BIT	16 /* Resume Flag */
36 #define X86_EFLAGS_RF		_BITUL(X86_EFLAGS_RF_BIT)
37 #define X86_EFLAGS_VM_BIT	17 /* Virtual Mode */
38 #define X86_EFLAGS_VM		_BITUL(X86_EFLAGS_VM_BIT)
39 #define X86_EFLAGS_AC_BIT	18 /* Alignment Check/Access Control */
40 #define X86_EFLAGS_AC		_BITUL(X86_EFLAGS_AC_BIT)
41 #define X86_EFLAGS_VIF_BIT	19 /* Virtual Interrupt Flag */
42 #define X86_EFLAGS_VIF		_BITUL(X86_EFLAGS_VIF_BIT)
43 #define X86_EFLAGS_VIP_BIT	20 /* Virtual Interrupt Pending */
44 #define X86_EFLAGS_VIP		_BITUL(X86_EFLAGS_VIP_BIT)
45 #define X86_EFLAGS_ID_BIT	21 /* CPUID detection */
46 #define X86_EFLAGS_ID		_BITUL(X86_EFLAGS_ID_BIT)
47 
48 /*
49  * Basic CPU control in CR0
50  */
51 #define X86_CR0_PE_BIT		0 /* Protection Enable */
52 #define X86_CR0_PE		_BITUL(X86_CR0_PE_BIT)
53 #define X86_CR0_MP_BIT		1 /* Monitor Coprocessor */
54 #define X86_CR0_MP		_BITUL(X86_CR0_MP_BIT)
55 #define X86_CR0_EM_BIT		2 /* Emulation */
56 #define X86_CR0_EM		_BITUL(X86_CR0_EM_BIT)
57 #define X86_CR0_TS_BIT		3 /* Task Switched */
58 #define X86_CR0_TS		_BITUL(X86_CR0_TS_BIT)
59 #define X86_CR0_ET_BIT		4 /* Extension Type */
60 #define X86_CR0_ET		_BITUL(X86_CR0_ET_BIT)
61 #define X86_CR0_NE_BIT		5 /* Numeric Error */
62 #define X86_CR0_NE		_BITUL(X86_CR0_NE_BIT)
63 #define X86_CR0_WP_BIT		16 /* Write Protect */
64 #define X86_CR0_WP		_BITUL(X86_CR0_WP_BIT)
65 #define X86_CR0_AM_BIT		18 /* Alignment Mask */
66 #define X86_CR0_AM		_BITUL(X86_CR0_AM_BIT)
67 #define X86_CR0_NW_BIT		29 /* Not Write-through */
68 #define X86_CR0_NW		_BITUL(X86_CR0_NW_BIT)
69 #define X86_CR0_CD_BIT		30 /* Cache Disable */
70 #define X86_CR0_CD		_BITUL(X86_CR0_CD_BIT)
71 #define X86_CR0_PG_BIT		31 /* Paging */
72 #define X86_CR0_PG		_BITUL(X86_CR0_PG_BIT)
73 
74 /*
75  * Paging options in CR3
76  */
77 #define X86_CR3_PWT_BIT		3 /* Page Write Through */
78 #define X86_CR3_PWT		_BITUL(X86_CR3_PWT_BIT)
79 #define X86_CR3_PCD_BIT		4 /* Page Cache Disable */
80 #define X86_CR3_PCD		_BITUL(X86_CR3_PCD_BIT)
81 
82 #define X86_CR3_PCID_BITS	12
83 #define X86_CR3_PCID_MASK	(_AC((1UL << X86_CR3_PCID_BITS) - 1, UL))
84 
85 #define X86_CR3_PCID_NOFLUSH_BIT 63 /* Preserve old PCID */
86 #define X86_CR3_PCID_NOFLUSH    _BITULL(X86_CR3_PCID_NOFLUSH_BIT)
87 
88 /*
89  * Intel CPU features in CR4
90  */
91 #define X86_CR4_VME_BIT		0 /* enable vm86 extensions */
92 #define X86_CR4_VME		_BITUL(X86_CR4_VME_BIT)
93 #define X86_CR4_PVI_BIT		1 /* virtual interrupts flag enable */
94 #define X86_CR4_PVI		_BITUL(X86_CR4_PVI_BIT)
95 #define X86_CR4_TSD_BIT		2 /* disable time stamp at ipl 3 */
96 #define X86_CR4_TSD		_BITUL(X86_CR4_TSD_BIT)
97 #define X86_CR4_DE_BIT		3 /* enable debugging extensions */
98 #define X86_CR4_DE		_BITUL(X86_CR4_DE_BIT)
99 #define X86_CR4_PSE_BIT		4 /* enable page size extensions */
100 #define X86_CR4_PSE		_BITUL(X86_CR4_PSE_BIT)
101 #define X86_CR4_PAE_BIT		5 /* enable physical address extensions */
102 #define X86_CR4_PAE		_BITUL(X86_CR4_PAE_BIT)
103 #define X86_CR4_MCE_BIT		6 /* Machine check enable */
104 #define X86_CR4_MCE		_BITUL(X86_CR4_MCE_BIT)
105 #define X86_CR4_PGE_BIT		7 /* enable global pages */
106 #define X86_CR4_PGE		_BITUL(X86_CR4_PGE_BIT)
107 #define X86_CR4_PCE_BIT		8 /* enable performance counters at ipl 3 */
108 #define X86_CR4_PCE		_BITUL(X86_CR4_PCE_BIT)
109 #define X86_CR4_OSFXSR_BIT	9 /* enable fast FPU save and restore */
110 #define X86_CR4_OSFXSR		_BITUL(X86_CR4_OSFXSR_BIT)
111 #define X86_CR4_OSXMMEXCPT_BIT	10 /* enable unmasked SSE exceptions */
112 #define X86_CR4_OSXMMEXCPT	_BITUL(X86_CR4_OSXMMEXCPT_BIT)
113 #define X86_CR4_UMIP_BIT	11 /* enable UMIP support */
114 #define X86_CR4_UMIP		_BITUL(X86_CR4_UMIP_BIT)
115 #define X86_CR4_LA57_BIT	12 /* enable 5-level page tables */
116 #define X86_CR4_LA57		_BITUL(X86_CR4_LA57_BIT)
117 #define X86_CR4_VMXE_BIT	13 /* enable VMX virtualization */
118 #define X86_CR4_VMXE		_BITUL(X86_CR4_VMXE_BIT)
119 #define X86_CR4_SMXE_BIT	14 /* enable safer mode (TXT) */
120 #define X86_CR4_SMXE		_BITUL(X86_CR4_SMXE_BIT)
121 #define X86_CR4_FSGSBASE_BIT	16 /* enable RDWRFSGS support */
122 #define X86_CR4_FSGSBASE	_BITUL(X86_CR4_FSGSBASE_BIT)
123 #define X86_CR4_PCIDE_BIT	17 /* enable PCID support */
124 #define X86_CR4_PCIDE		_BITUL(X86_CR4_PCIDE_BIT)
125 #define X86_CR4_OSXSAVE_BIT	18 /* enable xsave and xrestore */
126 #define X86_CR4_OSXSAVE		_BITUL(X86_CR4_OSXSAVE_BIT)
127 #define X86_CR4_SMEP_BIT	20 /* enable SMEP support */
128 #define X86_CR4_SMEP		_BITUL(X86_CR4_SMEP_BIT)
129 #define X86_CR4_SMAP_BIT	21 /* enable SMAP support */
130 #define X86_CR4_SMAP		_BITUL(X86_CR4_SMAP_BIT)
131 #define X86_CR4_PKE_BIT		22 /* enable Protection Keys support */
132 #define X86_CR4_PKE		_BITUL(X86_CR4_PKE_BIT)
133 
134 /*
135  * x86-64 Task Priority Register, CR8
136  */
137 #define X86_CR8_TPR		_AC(0x0000000f,UL) /* task priority register */
138 
139 /*
140  * AMD and Transmeta use MSRs for configuration; see <asm/msr-index.h>
141  */
142 
143 /*
144  *      NSC/Cyrix CPU configuration register indexes
145  */
146 #define CX86_PCR0	0x20
147 #define CX86_GCR	0xb8
148 #define CX86_CCR0	0xc0
149 #define CX86_CCR1	0xc1
150 #define CX86_CCR2	0xc2
151 #define CX86_CCR3	0xc3
152 #define CX86_CCR4	0xe8
153 #define CX86_CCR5	0xe9
154 #define CX86_CCR6	0xea
155 #define CX86_CCR7	0xeb
156 #define CX86_PCR1	0xf0
157 #define CX86_DIR0	0xfe
158 #define CX86_DIR1	0xff
159 #define CX86_ARR_BASE	0xc4
160 #define CX86_RCR_BASE	0xdc
161 
162 #define CR0_STATE	(X86_CR0_PE | X86_CR0_MP | X86_CR0_ET | \
163 			 X86_CR0_NE | X86_CR0_WP | X86_CR0_AM | \
164 			 X86_CR0_PG)
165 
166 #endif /* _UAPI_ASM_X86_PROCESSOR_FLAGS_H */
167