?? tty.h
字號:
/* * A clist structure is the head * of a linked list queue of characters. * The characters are stored in 4-word * blocks containing a link and 6 characters. * The routines getc and putc (m45.s or m40.s) * manipulate these structures. */struct clist{ int c_cc; /* character count */ int c_cf; /* pointer to first block */ int c_cl; /* pointer to last block */};/* * A tty structure is needed for * each UNIX character device that * is used for normal terminal IO. * The routines in tty.c handle the * common code associated with * these structures. * The definition and device dependent * code is in each driver. (kl.c dc.c dh.c) */struct tty{ struct clist t_rawq; /* input chars right off device */ struct clist t_canq; /* input chars after erase and kill */ struct clist t_outq; /* output list to device */ int t_flags; /* mode, settable by stty call */ int *t_addr; /* device address (register or startup fcn) */ char t_delct; /* number of delimiters in raw q */ char t_col; /* printing column of device */ char t_erase; /* erase character */ char t_kill; /* kill character */ char t_state; /* internal state, not visible externally */ char t_char; /* character temporary */ int t_speeds; /* output+input line speed */ int t_dev; /* device name */};char partab[]; /* ASCII table: parity, character class */#define TTIPRI 10#define TTOPRI 20#define CERASE '#' /* default special characters */#define CEOT 004#define CKILL '@'#define CQUIT 034 /* FS, cntl shift L */#define CINTR 0177 /* DEL *//* limits */#define TTHIWAT 50#define TTLOWAT 30#define TTYHOG 256/* modes */#define HUPCL 01#define XTABS 02#define LCASE 04#define ECHO 010#define CRMOD 020#define RAW 040#define ODDP 0100#define EVENP 0200#define NLDELAY 001400#define TBDELAY 006000#define CRDELAY 030000#define VTDELAY 040000/* Hardware bits */#define DONE 0200#define IENABLE 0100/* Internal state bits */#define TIMEOUT 01 /* Delay timeout in progress */#define WOPEN 02 /* Waiting for open to complete */#define ISOPEN 04 /* Device is open */#define SSTART 010 /* Has special start routine at addr */#define CARR_ON 020 /* Software copy of carrier-present */#define BUSY 040 /* Output in progress */#define ASLEEP 0100 /* Wakeup when output done */
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