| Graeme Russ | 93efcb2 | 2011-02-12 15:11:32 +1100 | [diff] [blame] | 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 */ |