122 lines
5.3 KiB
C
Executable File
122 lines
5.3 KiB
C
Executable File
|
|
#ifndef CHIP
|
|
#error CHIP is not defined
|
|
#endif
|
|
|
|
#define EXTERN extern /* used in *.h files */
|
|
#define PRIVATE static /* PRIVATE x limits the scope of x */
|
|
#define PUBLIC /* PUBLIC is the opposite of PRIVATE */
|
|
#define FORWARD static /* some compilers require this to be 'static'*/
|
|
|
|
#define TRUE 1 /* used for turning integers into Booleans */
|
|
#define FALSE 0 /* used for turning integers into Booleans */
|
|
|
|
#define HZ 60 /* clock freq (software settable on IBM-PC) */
|
|
|
|
#define SUPER_USER (uid_t) 0 /* uid_t of superuser */
|
|
|
|
#define NULL ((void *)0) /* null pointer */
|
|
#define CPVEC_NR 16 /* max # of entries in a SYS_VCOPY request */
|
|
#define CPVVEC_NR 64 /* max # of entries in a SYS_VCOPY request */
|
|
#define SCPVEC_NR 64 /* max # of entries in a SYS_VSAFECOPY* request */
|
|
#define NR_IOREQS MIN(NR_BUFS, 64)
|
|
/* maximum number of entries in an iorequest */
|
|
|
|
/* Message passing constants. */
|
|
#define MESS_SIZE (sizeof(message)) /* might need usizeof from FS here */
|
|
#define NIL_MESS ((message *) 0) /* null pointer */
|
|
|
|
/* Memory related constants. */
|
|
#define SEGMENT_TYPE 0xFF00 /* bit mask to get segment type */
|
|
#define SEGMENT_INDEX 0x00FF /* bit mask to get segment index */
|
|
|
|
#define LOCAL_SEG 0x0000 /* flags indicating local memory segment */
|
|
#define NR_LOCAL_SEGS 3 /* # local segments per process (fixed) */
|
|
#define T 0 /* proc[i].mem_map[T] is for text */
|
|
#define D 1 /* proc[i].mem_map[D] is for data */
|
|
#define S 2 /* proc[i].mem_map[S] is for stack */
|
|
|
|
#define REMOTE_SEG 0x0100 /* flags indicating remote memory segment */
|
|
#define NR_REMOTE_SEGS 3 /* # remote memory regions (variable) */
|
|
|
|
#define BIOS_SEG 0x0200 /* flags indicating BIOS memory segment */
|
|
#define NR_BIOS_SEGS 3 /* # BIOS memory regions (variable) */
|
|
|
|
#define PHYS_SEG 0x0400 /* flag indicating entire physical memory */
|
|
|
|
#define GRANT_SEG 0x0800 /* flag indicating grant for umap */
|
|
|
|
/* Labels used to disable code sections for different reasons. */
|
|
#define DEAD_CODE 0 /* unused code in normal configuration */
|
|
#define FUTURE_CODE 0 /* new code to be activated + tested later */
|
|
#define TEMP_CODE 1 /* active code to be removed later */
|
|
|
|
/* Process name length in the PM process table, including '\0'. */
|
|
#define PROC_NAME_LEN 16
|
|
|
|
/* Miscellaneous */
|
|
#define BYTE 0377 /* mask for 8 bits */
|
|
#define READING 0 /* copy data to user */
|
|
#define WRITING 1 /* copy data from user */
|
|
#define NO_NUM 0x8000 /* used as numerical argument to panic() */
|
|
#define NIL_PTR (char *) 0 /* generally useful expression */
|
|
#define HAVE_SCATTERED_IO 1 /* scattered I/O is now standard */
|
|
|
|
/* Macros. */
|
|
#define MAX(a, b) ((a) > (b) ? (a) : (b))
|
|
#define MIN(a, b) ((a) < (b) ? (a) : (b))
|
|
|
|
/* Memory is allocated in clicks. */
|
|
#if (CHIP == INTEL)
|
|
#define CLICK_SIZE 4096 /* unit in which memory is allocated */
|
|
#define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */
|
|
#endif
|
|
|
|
#if (CHIP == SPARC) || (CHIP == M68000)
|
|
#define CLICK_SIZE 4096 /* unit in which memory is allocated */
|
|
#define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */
|
|
#endif
|
|
|
|
/* Click to byte conversions (and vice versa). */
|
|
#define HCLICK_SHIFT 4 /* log2 of HCLICK_SIZE */
|
|
#define HCLICK_SIZE 16 /* hardware segment conversion magic */
|
|
#if CLICK_SIZE >= HCLICK_SIZE
|
|
#define click_to_hclick(n) ((n) << (CLICK_SHIFT - HCLICK_SHIFT))
|
|
#else
|
|
#define click_to_hclick(n) ((n) >> (HCLICK_SHIFT - CLICK_SHIFT))
|
|
#endif
|
|
#define hclick_to_physb(n) ((phys_bytes) (n) << HCLICK_SHIFT)
|
|
#define physb_to_hclick(n) ((n) >> HCLICK_SHIFT)
|
|
|
|
#define ABS -999 /* this process means absolute memory */
|
|
|
|
/* Flag bits for i_mode in the inode. */
|
|
#define I_TYPE 0170000 /* this field gives inode type */
|
|
#define I_SYMBOLIC_LINK 0120000 /* file is a symbolic link */
|
|
#define I_REGULAR 0100000 /* regular file, not dir or special */
|
|
#define I_BLOCK_SPECIAL 0060000 /* block special file */
|
|
#define I_DIRECTORY 0040000 /* file is a directory */
|
|
#define I_CHAR_SPECIAL 0020000 /* character special file */
|
|
#define I_NAMED_PIPE 0010000 /* named pipe (FIFO) */
|
|
#define I_SET_UID_BIT 0004000 /* set effective uid_t on exec */
|
|
#define I_SET_GID_BIT 0002000 /* set effective gid_t on exec */
|
|
#define ALL_MODES 0006777 /* all bits for user, group and others */
|
|
#define RWX_MODES 0000777 /* mode bits for RWX only */
|
|
#define R_BIT 0000004 /* Rwx protection bit */
|
|
#define W_BIT 0000002 /* rWx protection bit */
|
|
#define X_BIT 0000001 /* rwX protection bit */
|
|
#define I_NOT_ALLOC 0000000 /* this inode is free */
|
|
|
|
/* Some limits. */
|
|
#define MAX_BLOCK_NR ((block_t) 077777777) /* largest block number */
|
|
#define HIGHEST_ZONE ((zone_t) 077777777) /* largest zone number */
|
|
#define MAX_INODE_NR ((ino_t) 037777777777) /* largest inode number */
|
|
#define MAX_FILE_POS ((off_t) 037777777777) /* largest legal file offset */
|
|
|
|
#define MAX_SYM_LOOPS 8 /* how many symbolic links are recursed */
|
|
|
|
#define NO_BLOCK ((block_t) 0) /* absence of a block number */
|
|
#define NO_ENTRY ((ino_t) 0) /* absence of a dir entry */
|
|
#define NO_ZONE ((zone_t) 0) /* absence of a zone number */
|
|
#define NO_DEV ((dev_t) 0) /* absence of a device numb */
|