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| 2 | #ifndef CHIP
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| 3 | #error CHIP is not defined
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| 4 | #endif
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| 5 |
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| 6 | #define EXTERN extern /* used in *.h files */
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| 7 | #define PRIVATE static /* PRIVATE x limits the scope of x */
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| 8 | #define PUBLIC /* PUBLIC is the opposite of PRIVATE */
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| 9 | #define FORWARD static /* some compilers require this to be 'static'*/
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| 10 |
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| 11 | #define TRUE 1 /* used for turning integers into Booleans */
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| 12 | #define FALSE 0 /* used for turning integers into Booleans */
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| 13 |
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| 14 | #define HZ 60 /* clock freq (software settable on IBM-PC) */
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| 15 |
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| 16 | #define SUPER_USER (uid_t) 0 /* uid_t of superuser */
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| 17 |
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| 18 | #define NULL ((void *)0) /* null pointer */
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| 19 | #define CPVEC_NR 16 /* max # of entries in a SYS_VCOPY request */
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| 20 | #define CPVVEC_NR 64 /* max # of entries in a SYS_VCOPY request */
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| 21 | #define NR_IOREQS MIN(NR_BUFS, 64)
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| 22 | /* maximum number of entries in an iorequest */
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| 23 |
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| 24 | /* Message passing constants. */
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| 25 | #define MESS_SIZE (sizeof(message)) /* might need usizeof from FS here */
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| 26 | #define NIL_MESS ((message *) 0) /* null pointer */
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| 27 |
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| 28 | /* Memory related constants. */
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| 29 | #define SEGMENT_TYPE 0xFF00 /* bit mask to get segment type */
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| 30 | #define SEGMENT_INDEX 0x00FF /* bit mask to get segment index */
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| 31 |
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| 32 | #define LOCAL_SEG 0x0000 /* flags indicating local memory segment */
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| 33 | #define NR_LOCAL_SEGS 3 /* # local segments per process (fixed) */
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| 34 | #define T 0 /* proc[i].mem_map[T] is for text */
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| 35 | #define D 1 /* proc[i].mem_map[D] is for data */
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| 36 | #define S 2 /* proc[i].mem_map[S] is for stack */
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| 37 |
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| 38 | #define REMOTE_SEG 0x0100 /* flags indicating remote memory segment */
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| 39 | #define NR_REMOTE_SEGS 3 /* # remote memory regions (variable) */
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| 40 |
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| 41 | #define BIOS_SEG 0x0200 /* flags indicating BIOS memory segment */
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| 42 | #define NR_BIOS_SEGS 3 /* # BIOS memory regions (variable) */
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| 43 |
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| 44 | #define PHYS_SEG 0x0400 /* flag indicating entire physical memory */
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| 45 |
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| 46 | /* Labels used to disable code sections for different reasons. */
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| 47 | #define DEAD_CODE 0 /* unused code in normal configuration */
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| 48 | #define FUTURE_CODE 0 /* new code to be activated + tested later */
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| 49 | #define TEMP_CODE 1 /* active code to be removed later */
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| 50 |
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| 51 | /* Process name length in the PM process table, including '\0'. */
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| 52 | #define PROC_NAME_LEN 16
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| 53 |
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| 54 | /* Miscellaneous */
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| 55 | #define BYTE 0377 /* mask for 8 bits */
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| 56 | #define READING 0 /* copy data to user */
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| 57 | #define WRITING 1 /* copy data from user */
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| 58 | #define NO_NUM 0x8000 /* used as numerical argument to panic() */
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| 59 | #define NIL_PTR (char *) 0 /* generally useful expression */
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| 60 | #define HAVE_SCATTERED_IO 1 /* scattered I/O is now standard */
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| 61 |
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| 62 | /* Macros. */
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| 63 | #define MAX(a, b) ((a) > (b) ? (a) : (b))
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| 64 | #define MIN(a, b) ((a) < (b) ? (a) : (b))
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| 65 |
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| 66 | /* Memory is allocated in clicks. */
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| 67 | #if (CHIP == INTEL)
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| 68 | #define CLICK_SIZE 4096 /* unit in which memory is allocated */
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| 69 | #define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */
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| 70 | #endif
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| 71 |
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| 72 | #if (CHIP == SPARC) || (CHIP == M68000)
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| 73 | #define CLICK_SIZE 4096 /* unit in which memory is allocated */
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| 74 | #define CLICK_SHIFT 12 /* log2 of CLICK_SIZE */
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| 75 | #endif
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| 76 |
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| 77 | /* Click to byte conversions (and vice versa). */
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| 78 | #define HCLICK_SHIFT 4 /* log2 of HCLICK_SIZE */
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| 79 | #define HCLICK_SIZE 16 /* hardware segment conversion magic */
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| 80 | #if CLICK_SIZE >= HCLICK_SIZE
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| 81 | #define click_to_hclick(n) ((n) << (CLICK_SHIFT - HCLICK_SHIFT))
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| 82 | #else
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| 83 | #define click_to_hclick(n) ((n) >> (HCLICK_SHIFT - CLICK_SHIFT))
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| 84 | #endif
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| 85 | #define hclick_to_physb(n) ((phys_bytes) (n) << HCLICK_SHIFT)
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| 86 | #define physb_to_hclick(n) ((n) >> HCLICK_SHIFT)
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| 87 |
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| 88 | #define ABS -999 /* this process means absolute memory */
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| 89 |
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| 90 | /* Flag bits for i_mode in the inode. */
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| 91 | #define I_TYPE 0170000 /* this field gives inode type */
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| 92 | #define I_SYMBOLIC_LINK 0120000 /* file is a symbolic link */
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| 93 | #define I_REGULAR 0100000 /* regular file, not dir or special */
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| 94 | #define I_BLOCK_SPECIAL 0060000 /* block special file */
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| 95 | #define I_DIRECTORY 0040000 /* file is a directory */
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| 96 | #define I_CHAR_SPECIAL 0020000 /* character special file */
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| 97 | #define I_NAMED_PIPE 0010000 /* named pipe (FIFO) */
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| 98 | #define I_SET_UID_BIT 0004000 /* set effective uid_t on exec */
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| 99 | #define I_SET_GID_BIT 0002000 /* set effective gid_t on exec */
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| 100 | #define ALL_MODES 0006777 /* all bits for user, group and others */
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| 101 | #define RWX_MODES 0000777 /* mode bits for RWX only */
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| 102 | #define R_BIT 0000004 /* Rwx protection bit */
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| 103 | #define W_BIT 0000002 /* rWx protection bit */
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| 104 | #define X_BIT 0000001 /* rwX protection bit */
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| 105 | #define I_NOT_ALLOC 0000000 /* this inode is free */
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| 106 |
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| 107 | /* Some limits. */
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| 108 | #define MAX_BLOCK_NR ((block_t) 077777777) /* largest block number */
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| 109 | #define HIGHEST_ZONE ((zone_t) 077777777) /* largest zone number */
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| 110 | #define MAX_INODE_NR ((ino_t) 037777777777) /* largest inode number */
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| 111 | #define MAX_FILE_POS ((off_t) 037777777777) /* largest legal file offset */
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| 112 |
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| 113 | #define MAX_SYM_LOOPS 8 /* how many symbolic links are recursed */
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| 114 |
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| 115 | #define NO_BLOCK ((block_t) 0) /* absence of a block number */
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| 116 | #define NO_ENTRY ((ino_t) 0) /* absence of a dir entry */
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| 117 | #define NO_ZONE ((zone_t) 0) /* absence of a zone number */
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| 118 | #define NO_DEV ((dev_t) 0) /* absence of a device numb */
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