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Diffstat (limited to 'include/rtems/score/registers.h')
| -rw-r--r-- | include/rtems/score/registers.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/include/rtems/score/registers.h b/include/rtems/score/registers.h new file mode 100644 index 0000000000..254fef701b --- /dev/null +++ b/include/rtems/score/registers.h @@ -0,0 +1,72 @@ +/** + * @file + * + * @brief Intel CPU Constants and Definitions + * + * This file contains definition and constants related to Intel Cpu + */ + +/* + * COPYRIGHT (c) 1998 valette@crf.canon.fr + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef _RTEMS_SCORE_REGISTERS_H +#define _RTEMS_SCORE_REGISTERS_H + +/* + * definition related to EFLAGS + */ +#define EFLAGS_CARRY 0x1 +#define EFLAGS_PARITY 0x4 + +#define EFLAGS_AUX_CARRY 0x10 +#define EFLAGS_ZERO 0x40 +#define EFLAGS_SIGN 0x80 + +#define EFLAGS_TRAP 0x100 +#define EFLAGS_INTR_ENABLE 0x200 +#define EFLAGS_DIRECTION 0x400 +#define EFLAGS_OVERFLOW 0x800 + +#define EFLAGS_IOPL_MASK 0x3000 +#define EFLAGS_NESTED_TASK 0x8000 + +#define EFLAGS_RESUME 0x10000 +#define EFLAGS_VIRTUAL_MODE 0x20000 +#define EFLAGS_ALIGN_CHECK 0x40000 +#define EFLAGS_VIRTUAL_INTR 0x80000 + +#define EFLAGS_VIRTUAL_INTR_PEND 0x100000 +#define EFLAGS_ID 0x200000 + +/* + * definitions related to CR0 + */ +#define CR0_PROTECTION_ENABLE 0x1 +#define CR0_MONITOR_COPROC 0x2 +#define CR0_COPROC_SOFT_EMUL 0x4 +#define CR0_FLOATING_INSTR_EXCEPTION 0x8 + +#define CR0_EXTENSION_TYPE 0x10 +#define CR0_NUMERIC_ERROR 0x20 + +#define CR0_WRITE_PROTECT 0x10000 +#define CR0_ALIGMENT_MASK 0x40000 + +#define CR0_NO_WRITE_THROUGH 0x20000000 +#define CR0_PAGE_LEVEL_CACHE_DISABLE 0x40000000 +#define CR0_PAGING 0x80000000 + +/* + * definitions related to CR3 + */ + +#define CR3_PAGE_CACHE_DISABLE 0x10 +#define CR3_PAGE_WRITE_THROUGH 0x8 +#define CR3_PAGE_DIRECTORY_MASK 0xFFFFF000 + +#endif |