155 lines
4 KiB
C
155 lines
4 KiB
C
|
/*
|
||
|
|
Defines and externs of general interest
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* $Header$ */
|
||
|
|
|
||
|
|
|
||
|
|
/********* PRIVATE/static *********/
|
||
|
|
|
||
|
|
#define PRIVATE static /* or not */
|
||
|
|
|
||
|
|
|
||
|
|
/********* The internal data types ********/
|
||
|
|
|
||
|
|
#define UNSIGNED /* the normal case */
|
||
|
|
#ifdef UNSIGNED
|
||
|
|
|
||
|
|
/* The EM pointer is an abstract type and requires explicit conversion*/
|
||
|
|
typedef unsigned long ptr; /* pointer to EM address */
|
||
|
|
#define p2i(p) (p) /* convert pointer to index */
|
||
|
|
#define i2p(p) (ptr)(p) /* convert index to pointer */
|
||
|
|
|
||
|
|
#else UNSIGNED
|
||
|
|
|
||
|
|
typedef char *ptr; /* pointer to EM address */
|
||
|
|
#define p2i(p) (long)(p) /* convert pointer to index */
|
||
|
|
#define i2p(p) (ptr)(p) /* convert index to pointer */
|
||
|
|
|
||
|
|
#endif UNSIGNED
|
||
|
|
|
||
|
|
/* The EM size is an integer type; a cast suffices */
|
||
|
|
typedef long size;
|
||
|
|
|
||
|
|
|
||
|
|
/********* Mathematical constants ********/
|
||
|
|
|
||
|
|
#define I_MAXU1 255L
|
||
|
|
#define I_MAXS1 127L
|
||
|
|
#define I_MINS1 (-127L-1L)
|
||
|
|
|
||
|
|
#define I_MAXU2 65535L
|
||
|
|
#define I_MAXS2 32767L
|
||
|
|
#define I_MINS2 (-32767L-1L)
|
||
|
|
|
||
|
|
#define I_MAXU4 4294967295L
|
||
|
|
#define I_MAXS4 2147483647L
|
||
|
|
#define I_MINS4 (-2147483647L-1L)
|
||
|
|
|
||
|
|
#define FL_MAXU1 255.0
|
||
|
|
#define FL_MAXS1 127.0
|
||
|
|
#define FL_MINS1 -128.0
|
||
|
|
|
||
|
|
#define FL_MAXU2 65535.0
|
||
|
|
#define FL_MAXS2 32767.0
|
||
|
|
#define FL_MINS2 -32768.0
|
||
|
|
|
||
|
|
#define FL_MAXU4 4294967295.0
|
||
|
|
#define FL_MAXS4 2147483647.0
|
||
|
|
#define FL_MINS4 -2147483648.0
|
||
|
|
|
||
|
|
#define BIT(n) (1L<<(n))
|
||
|
|
|
||
|
|
#define SIGNBIT1 BIT(7) /* Signbit of one byte signed int */
|
||
|
|
#define SIGNBIT2 BIT(15) /* Signbit of two byte signed int */
|
||
|
|
#define SIGNBIT4 BIT(31) /* Signbit of four byte signed int */
|
||
|
|
|
||
|
|
#define MASK1 0xFF /* To mask one byte */
|
||
|
|
#define MASK2 0xFFFF /* To mask two bytes */
|
||
|
|
|
||
|
|
|
||
|
|
/******** Machine constants ********/
|
||
|
|
|
||
|
|
#define MAX_OFF2 I_MAXS2
|
||
|
|
#define MAX_OFF4 I_MAXS4
|
||
|
|
|
||
|
|
|
||
|
|
/******** EM machine data sizes ********/
|
||
|
|
|
||
|
|
#define FRALIMIT 8L /* Default limit */
|
||
|
|
#define LINSIZE 4L /* Fixed size of LIN number */
|
||
|
|
|
||
|
|
|
||
|
|
/******** EM Machine capacity parameters ********/
|
||
|
|
|
||
|
|
extern size wsize; /* wordsize */
|
||
|
|
extern size dwsize; /* double wordsize */
|
||
|
|
extern size psize; /* pointersize */
|
||
|
|
extern long i_minsw; /* Min. value for signed integer of wsize */
|
||
|
|
extern long i_maxsw; /* Max. value for signed integer of wsize */
|
||
|
|
extern unsigned long i_maxuw; /* Max. value for unsigned integer of wsize */
|
||
|
|
extern long min_off; /* Minimum offset */
|
||
|
|
extern long max_off; /* Maximum offset */
|
||
|
|
extern ptr max_addr; /* Maximum address */
|
||
|
|
|
||
|
|
|
||
|
|
/******** EM program parameters ********/
|
||
|
|
|
||
|
|
extern ptr ML; /* Memory Limit */
|
||
|
|
extern ptr HB; /* Heap Base */
|
||
|
|
extern ptr DB; /* Procedure Descriptor Base, end of text */
|
||
|
|
extern long NProc; /* Number of Procedure Descriptors */
|
||
|
|
extern long PreIgnMask; /* Preset Ignore Mask, from command line */
|
||
|
|
|
||
|
|
|
||
|
|
/******** EM machine registers ********/
|
||
|
|
|
||
|
|
#define UNDEFINED (0)
|
||
|
|
#define DEFINED (1)
|
||
|
|
|
||
|
|
extern long PI; /* Procedure Identifier of running proc */
|
||
|
|
extern ptr PC; /* Program Counter */
|
||
|
|
|
||
|
|
extern ptr HP; /* Heap Pointer */
|
||
|
|
extern ptr SP; /* Stack Pointer */
|
||
|
|
extern ptr LB; /* Local Base */
|
||
|
|
extern ptr AB; /* Actual Base */
|
||
|
|
|
||
|
|
extern long ES; /* program Exit Status */
|
||
|
|
extern int ES_def; /* set iff Exit Status legal */
|
||
|
|
|
||
|
|
#define TR_ABORT (1)
|
||
|
|
#define TR_HALT (2)
|
||
|
|
#define TR_TRAP (3)
|
||
|
|
extern int OnTrap; /* what to do upon trap */
|
||
|
|
extern long IgnMask; /* Ignore Mask for traps */
|
||
|
|
extern long TrapPI; /* Procedure Identifier of trap routine */
|
||
|
|
|
||
|
|
extern char *FRA; /* Function Return Area */
|
||
|
|
extern size FRALimit; /* Function Return Area maximum Size */
|
||
|
|
extern size FRASize; /* Function Return Area actual Size */
|
||
|
|
extern int FRA_def; /* set iff Function Return Area legal */
|
||
|
|
|
||
|
|
|
||
|
|
/******** The EM Machine Memory ********/
|
||
|
|
|
||
|
|
extern char *text; /* program text & procedure descriptors */
|
||
|
|
|
||
|
|
extern char *data; /* global data & heap space */
|
||
|
|
extern ptr HL; /* Heap Limit */
|
||
|
|
|
||
|
|
extern char *stack; /* stack space and local data */
|
||
|
|
extern ptr SL; /* Stack Limit */
|
||
|
|
|
||
|
|
|
||
|
|
/********* Global inline functions ********/
|
||
|
|
|
||
|
|
#define btol(c) (long)((c) & MASK1)
|
||
|
|
#define btou(c) (unsigned int)((c) & MASK1)
|
||
|
|
#define btos(c) (c)
|
||
|
|
|
||
|
|
#define max(i,j) (((i) > (j)) ? (i) : (j))
|
||
|
|
#define min(i,j) (((i) < (j)) ? (i) : (j))
|
||
|
|
|
||
|
|
|