#ifndef ASM_X86__PROCESSOR_FLAGS_H #define ASM_X86__PROCESSOR_FLAGS_H /* Various flags defined: can be included from assembler. */ /* * EFLAGS bits */ #define X86_EFLAGS_CF 0x00000001 /* Carry Flag */ #define X86_EFLAGS_PF 0x00000004 /* Parity Flag */ #define X86_EFLAGS_AF 0x00000010 /* Auxillary carry Flag */ #define X86_EFLAGS_ZF 0x00000040 /* Zero Flag */ #define X86_EFLAGS_SF 0x00000080 /* Sign Flag */ #define X86_EFLAGS_TF 0x00000100 /* Trap Flag */ #define X86_EFLAGS_IF 0x00000200 /* Interrupt Flag */ #define X86_EFLAGS_DF 0x00000400 /* Direction Flag */ #define X86_EFLAGS_OF 0x00000800 /* Overflow Flag */ #define X86_EFLAGS_IOPL 0x00003000 /* IOPL mask */ #define X86_EFLAGS_NT 0x00004000 /* Nested Task */ #define X86_EFLAGS_RF 0x00010000 /* Resume Flag */ #define X86_EFLAGS_VM 0x00020000 /* Virtual Mode */ #define X86_EFLAGS_AC 0x00040000 /* Alignment Check */ #define X86_EFLAGS_VIF 0x00080000 /* Virtual Interrupt Flag */ #define X86_EFLAGS_VIP 0x00100000 /* Virtual Interrupt Pending */ #define X86_EFLAGS_ID 0x00200000 /* CPUID detection flag */ /* * Basic CPU control in CR0 */ #define X86_CR0_PE 0x00000001 /* Protection Enable */ #define X86_CR0_MP 0x00000002 /* Monitor Coprocessor */ #define X86_CR0_EM 0x00000004 /* Emulation */ #define X86_CR0_TS 0x00000008 /* Task Switched */ #define X86_CR0_ET 0x00000010 /* Extension Type */ #define X86_CR0_NE 0x00000020 /* Numeric Error */ #define X86_CR0_WP 0x00010000 /* Write Protect */ #define X86_CR0_AM 0x00040000 /* Alignment Mask */ #define X86_CR0_NW 0x20000000 /* Not Write-through */ #define X86_CR0_CD 0x40000000 /* Cache Disable */ #define X86_CR0_PG 0x80000000 /* Paging */ /* * Paging options in CR3 */ #define X86_CR3_PWT 0x00000008 /* Page Write Through */ #define X86_CR3_PCD 0x00000010 /* Page Cache Disable */ /* * Intel CPU features in CR4 */ #define X86_CR4_VME 0x00000001 /* enable vm86 extensions */ #define X86_CR4_PVI 0x00000002 /* virtual interrupts flag enable */ #define X86_CR4_TSD 0x00000004 /* disable time stamp at ipl 3 */ #define X86_CR4_DE 0x00000008 /* enable debugging extensions */ #define X86_CR4_PSE 0x00000010 /* enable page size extensions */ #define X86_CR4_PAE 0x00000020 /* enable physical address extensions */ #define X86_CR4_MCE 0x00000040 /* Machine check enable */ #define X86_CR4_PGE 0x00000080 /* enable global pages */ #define X86_CR4_PCE 0x00000100 /* enable performance counters at ipl 3 */ #define X86_CR4_OSFXSR 0x00000200 /* enable fast FPU save and restore */ #define X86_CR4_OSXMMEXCPT 0x00000400 /* enable unmasked SSE exceptions */ #define X86_CR4_VMXE 0x00002000 /* enable VMX virtualization */ /* * x86-64 Task Priority Register, CR8 */ #define X86_CR8_TPR 0x0000000F /* task priority register */ /* * AMD and Transmeta use MSRs for configuration; see */ /* * NSC/Cyrix CPU configuration register indexes */ #define CX86_PCR0 0x20 #define CX86_GCR 0xb8 #define CX86_CCR0 0xc0 #define CX86_CCR1 0xc1 #define CX86_CCR2 0xc2 #define CX86_CCR3 0xc3 #define CX86_CCR4 0xe8 #define CX86_CCR5 0xe9 #define CX86_CCR6 0xea #define CX86_CCR7 0xeb #define CX86_PCR1 0xf0 #define CX86_DIR0 0xfe #define CX86_DIR1 0xff #define CX86_ARR_BASE 0xc4 #define CX86_RCR_BASE 0xdc #ifdef CONFIG_VM86 #define X86_VM_MASK X86_EFLAGS_VM #else #define X86_VM_MASK 0 /* No VM86 support */ #endif #endif /* ASM_X86__PROCESSOR_FLAGS_H */