#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 DEFAULT_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 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 */ #define LOCAL_VM_SEG 0x1000 /* same as LOCAL_SEG, but with vm lookup */ #define VM_D (LOCAL_VM_SEG | D) #define VM_T (LOCAL_VM_SEG | T) #define MEM_GRANT 3 #define VM_GRANT (LOCAL_VM_SEG | MEM_GRANT) /* 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 /* Sizes of memory tables. The boot monitor distinguishes three memory areas, * namely low mem below 1M, 1M-16M, and mem after 16M. More chunks are needed * for DOS MINIX. */ #define NR_MEMS 8 /* 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_INODE_NR ((ino_t) 037777777777) /* largest inode number */ #define MAX_FILE_POS ((off_t) 0x7FFFFFFF) /* 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 */ #define SERVARNAME "cttyline" /* Bits for the system property flags in boot image processes. */ #define PREEMPTIBLE 0x02 /* kernel tasks are not preemptible */ #define BILLABLE 0x04 /* some processes are not billable */ #define SYS_PROC 0x10 /* system processes have own priv structure */ #define CHECK_IO_PORT 0x20 /* check if I/O request is allowed */ #define CHECK_IRQ 0x40 /* check if IRQ can be used */ #define CHECK_MEM 0x80 /* check if (VM) mem map request is allowed */ #define PROC_FULLVM 0x100 /* VM sets and manages full pagetable */