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 */ 101