/
forth.h
556 lines (467 loc) · 15.3 KB
/
forth.h
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/* common header file
Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008,2009,2010,2011 Free Software Foundation, Inc.
This file is part of Gforth.
Gforth is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, either version 3
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see http://www.gnu.org/licenses/.
*/
#include "config.h"
#include "128bit.h"
#include <stdio.h>
#include <sys/time.h>
#include <unistd.h>
#ifndef STANDALONE
#if defined(HAVE_LIBLTDL)
#include <ltdl.h>
#endif
#endif
#if !defined(FORCE_LL) && !defined(BUGGY_LONG_LONG)
#define BUGGY_LONG_LONG
#endif
#if defined(DOUBLY_INDIRECT)||defined(INDIRECT_THREADED)||defined(VM_PROFILING)
#define NO_DYNAMIC
#endif
#if defined(DOUBLY_INDIRECT)
# undef DIRECT_THREADED
# undef INDIRECT_THREADED
# define INDIRECT_THREADED
#endif
#if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
# undef USE_TOS
# undef USE_FTOS
# undef USE_NO_TOS
# undef USE_NO_FTOS
# define USE_NO_TOS
# define USE_NO_FTOS
#define PRIM_I "prim.i"
#define PRIM_LAB_I "prim_lab.i"
#define PRIM_NAMES_I "prim_names.i"
#define PRIM_SUPEREND_I "prim_superend.i"
#define PRIM_NUM_I "prim_num.i"
#define PRIM_GRP_I "prim_grp.i"
#define COSTS_I "costs.i"
#define SUPER2_I "super2.i"
/* #define PROFILE_I "profile.i" */
#else
/* gforth-fast or gforth-native */
# undef USE_TOS
# undef USE_FTOS
# undef USE_NO_TOS
# undef USE_NO_FTOS
# define USE_TOS
#define PRIM_I "prim-fast.i"
#define PRIM_LAB_I "prim_lab-fast.i"
#define PRIM_NAMES_I "prim_names-fast.i"
#define PRIM_SUPEREND_I "prim_superend-fast.i"
#define PRIM_NUM_I "prim_num-fast.i"
#define PRIM_GRP_I "prim_grp-fast.i"
#define COSTS_I "costs-fast.i"
#define SUPER2_I "super2-fast.i"
/* profile.c uses profile.i but does not define VM_PROFILING */
/* #define PROFILE_I "profile-fast.i" */
#endif
#include <limits.h>
#if defined(NeXT)
# include <libc.h>
#endif /* NeXT */
/* symbol indexed constants */
#define DOCOL 0
#define DOCON 1
#define DOVAR 2
#define DOUSER 3
#define DODEFER 4
#define DOFIELD 5
#define DOVAL 6
#define DODOES 7
#define DOABICODE 8
#define DOSEMIABICODE 9
#define DOER_MAX 9
#include "machine.h"
/* C interface data types */
typedef WYDE_TYPE Wyde;
typedef TETRABYTE_TYPE Tetrabyte;
typedef OCTABYTE_TYPE Octabyte;
typedef unsigned WYDE_TYPE UWyde;
typedef unsigned TETRABYTE_TYPE UTetrabyte;
typedef unsigned OCTABYTE_TYPE UOctabyte;
/* Forth data types */
/* Cell and UCell must be the same size as a pointer */
#define CELL_BITS (sizeof(Cell) * CHAR_BIT)
#define CELL_MIN (((Cell)1)<<(sizeof(Cell)*CHAR_BIT-1))
#define HALFCELL_BITS (CELL_BITS/2)
#define HALFCELL_MASK ((~(UCell)0)>>HALFCELL_BITS)
#define UH(x) (((UCell)(x))>>HALFCELL_BITS)
#define LH(x) ((x)&HALFCELL_MASK)
#define L2U(x) (((UCell)(x))<<HALFCELL_BITS)
#define HIGHBIT(x) (((UCell)(x))>>(CELL_BITS-1))
#define FLAG(b) (-(b))
#define FILEIO(error) (FLAG(error) & -37)
#define FILEEXIST(error) (FLAG(error) & -38)
#define F_TRUE (FLAG(0==0))
#define F_FALSE (FLAG(0!=0))
/* define this false if you want native division */
#ifdef FORCE_CDIV
#define FLOORED_DIV 0
#else
#define FLOORED_DIV ((1%-3)>0)
#endif
#if defined(BUGGY_LONG_LONG)
#define BUGGY_LL_CMP /* compares not possible */
#define BUGGY_LL_MUL /* multiplication not possible */
#define BUGGY_LL_DIV /* division not possible */
#define BUGGY_LL_ADD /* addition not possible */
#define BUGGY_LL_SHIFT /* shift not possible */
#define BUGGY_LL_D2F /* to float not possible */
#define BUGGY_LL_F2D /* from float not possible */
#define BUGGY_LL_SIZE /* long long "too short", so we use something else */
typedef struct {
Cell hi;
UCell lo;
} DCell;
typedef struct {
UCell hi;
UCell lo;
} UDCell;
#define DHI(x) (x).hi
#define DLO(x) (x).lo
#define DHI_IS(x,y) (x).hi=(y)
#define DLO_IS(x,y) (x).lo=(y)
#define UD2D(ud) ({UDCell _ud=(ud); (DCell){_ud.hi,_ud.lo};})
#define D2UD(d) ({DCell _d1=(d); (UDCell){_d1.hi,_d1.lo};})
/* shifts by less than CELL_BITS */
#define DLSHIFT(d,u) ({DCell _d=(d); UCell _u=(u); \
((_u==0) ? \
_d : \
(DCell){(_d.hi<<_u)|(_d.lo>>(CELL_BITS-_u)), \
_d.lo<<_u});})
#define UDLSHIFT(ud,u) D2UD(DLSHIFT(UD2D(ud),u))
#if SMALL_OFF_T
#define OFF2UD(o) ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(o); _ud;})
#define UD2OFF(ud) ((ud).lo)
#else /* !SMALL_OFF_T */
#define OFF2UD(o) ({UDCell _ud; off_t _o=(o); _ud.hi=_o>>CELL_BITS; _ud.lo=(Cell)_o; _ud;})
#define UD2OFF(ud) ({UDCell _ud=(ud); (((off_t)_ud.hi)<<CELL_BITS)+_ud.lo;})
#endif /* !SMALL_OFF_T */
#define DZERO ((DCell){0,0})
#else /* !defined(BUGGY_LONG_LONG) */
/* DCell and UDCell must be twice as large as Cell */
typedef DOUBLE_CELL_TYPE DCell;
typedef DOUBLE_UCELL_TYPE UDCell;
#define DHI(x) ({ Double_Store _d; _d.d=(x); _d.cells.high; })
#define DLO(x) ({ Double_Store _d; _d.d=(x); _d.cells.low; })
/* beware with the assignment: x is referenced twice! */
#define DHI_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.high=(y); (x)=_d.d; })
#define DLO_IS(x,y) ({ Double_Store _d; _d.d=(x); _d.cells.low =(y); (x)=_d.d; })
#define UD2D(ud) ((DCell)(ud))
#define D2UD(d) ((UDCell)(d))
#define OFF2UD(o) ((UDCell)(o))
#define UD2OFF(ud) ((off_t)(ud))
#define DZERO ((DCell)0)
/* shifts by less than CELL_BITS */
#define DLSHIFT(d,u) ((d)<<(u))
#define UDLSHIFT(d,u) ((d)<<(u))
#endif /* !defined(BUGGY_LONG_LONG) */
typedef union {
struct {
#if defined(WORDS_BIGENDIAN)||defined(BUGGY_LONG_LONG)
Cell high;
UCell low;
#else
UCell low;
Cell high;
#endif
} cells;
DCell d;
UDCell ud;
} Double_Store;
#define FETCH_DCELL_T(d_,lo,hi,t_) ({ \
Double_Store _d; \
_d.cells.low = (lo); \
_d.cells.high = (hi); \
(d_) = _d.t_; \
})
#define STORE_DCELL_T(d_,lo,hi,t_) ({ \
Double_Store _d; \
_d.t_ = (d_); \
(lo) = _d.cells.low; \
(hi) = _d.cells.high; \
})
#define vm_twoCell2d(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,d);
#define vm_twoCell2ud(lo,hi,d_) FETCH_DCELL_T(d_,lo,hi,ud);
#define vm_d2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,d);
#define vm_ud2twoCell(d_,lo,hi) STORE_DCELL_T(d_,lo,hi,ud);
typedef Label *Xt;
/* PFA gives the parameter field address corresponding to a cfa */
#define PFA(cfa) (((Cell *)cfa)+2)
/* PFA1 is a special version for use just after a NEXT1 */
#define PFA1(cfa) PFA(cfa)
/* CODE_ADDRESS is the address of the code jumped to through the code field */
#define CODE_ADDRESS(cfa) (*(Xt)(cfa))
/* DOES_CODE is the Forth code does jumps to */
#if !defined(DOUBLY_INDIRECT)
# define DOES_CA (symbols[DODOES])
#else /* defined(DOUBLY_INDIRECT) */
# define DOES_CA ((Label)&xts[DODOES])
#endif /* defined(DOUBLY_INDIRECT) */
#define DOES_CODE1(cfa) ((Xt *)(cfa[1]))
/* MAKE_CF creates an appropriate code field at the cfa;
ca is the code address */
#define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
/* make a code field for a defining-word-defined word */
#define CF(const) (-const-2)
#define CF_NIL -1
#ifndef FLUSH_ICACHE
#warning flush-icache probably will not work (see manual)
# define FLUSH_ICACHE(addr,size)
#warning no FLUSH_ICACHE, turning off dynamic native code by default
#undef NO_DYNAMIC_DEFAULT
#define NO_DYNAMIC_DEFAULT 1
#endif
#ifndef CHECK_PRIM
#define CHECK_PRIM(start,len) 0
#endif
#if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
#define STACK_CACHE_DEFAULT 0
#else
#define STACK_CACHE_DEFAULT STACK_CACHE_DEFAULT_FAST
#endif
#ifdef USE_FTOS
#define IF_fpTOS(x) x
#else
#define IF_fpTOS(x)
#define fpTOS (fp[0])
#endif
#define IF_rpTOS(x)
#define rpTOS (rp[0])
typedef struct {
Address base; /* base address of image (0 if relocatable) */
UCell checksum; /* checksum of ca's to protect against some
incompatible binary/executable combinations
(0 if relocatable) */
UCell image_size; /* all sizes in bytes */
UCell dict_size;
UCell data_stack_size;
UCell fp_stack_size;
UCell return_stack_size;
UCell locals_stack_size;
Xt *boot_entry; /* initial ip for booting (in BOOT) */
Xt *throw_entry; /* ip after signal (in THROW) */
Cell unused1; /* possibly tib stack size */
Label *xt_base; /* base of DOUBLE_INDIRECT xts[], for comp-i.fs */
Address data_stack_base; /* this and the following fields are initialized by the loader */
Address fp_stack_base;
Address return_stack_base;
Address locals_stack_base;
} ImageHeader;
/* the image-header is created in main.fs */
#ifdef HAS_F83HEADERSTRING
struct F83Name {
struct F83Name *next; /* the link field for old hands */
char countetc;
char name[0];
};
#define F83NAME_COUNT(np) ((np)->countetc & 0x1f)
#endif
struct Longname {
struct Longname *next; /* the link field for old hands */
Cell countetc;
char name[0];
};
#define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<4)>>4))
struct Cellpair {
Cell n1;
Cell n2;
};
struct Cellquad {
Cell n1;
Cell n2;
Cell n3;
Cell n4;
};
#define IOR(flag) ((flag)? -512-errno : 0)
#ifdef GFORTH_DEBUGGING
#if defined(GLOBALS_NONRELOC)
/* if globals cause non-relocatable primitives, keep saved_ip and rp
in a structure and access it through locals */
typedef struct saved_regs {
Xt *sr_saved_ip;
Cell *sr_rp;
} saved_regs;
extern saved_regs saved_regs_v;
extern PER_THREAD saved_regs *saved_regs_p;
#define saved_ip (saved_regs_p->sr_saved_ip)
#define rp (saved_regs_p->sr_rp)
/* for use in gforth_engine header */
#error sr_proto not passed in fflib.fs callbacks (solution: disable GLOBALS_NONRELOC)
#define sr_proto , struct saved_regs *saved_regs_p0
#define sr_call , saved_regs_p
#else /* !defined(GLOBALS_NONRELOC) */
extern PER_THREAD Xt *saved_ip;
extern PER_THREAD Cell *rp;
#define sr_proto
#define sr_call
#endif /* !defined(GLOBALS_NONRELOC) */
#else /* !defined(GFORTH_DEBUGGING) */
#define sr_proto
#define sr_call
#endif /* !defined(GFORTH_DEBUGGING) */
Label *gforth_engine(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
Label *gforth_engine2(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
Label *gforth_engine3(Xt *ip, Cell *sp, Cell *rp0, Float *fp, Address lp sr_proto);
/* for ABI-CODE and ;ABI-CODE */
typedef Cell *abifunc(Cell *sp, Float **fpp);
typedef Cell *semiabifunc(Cell *sp, Float **fpp, Address body);
/* engine/prim support routines */
Address gforth_alloc(Cell size);
char *cstr(Char *from, UCell size);
char *tilde_cstr(Char *from, UCell size);
Cell opencreate_file(char *s, Cell wfam, int flags, Cell *wiorp);
DCell timeval2us(struct timeval *tvp);
DCell timespec2ns(struct timespec *tvp);
void cmove(Char *c_from, Char *c_to, UCell u);
void cmove_up(Char *c_from, Char *c_to, UCell u);
Cell compare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
struct Longname *listlfind(Char *c_addr, UCell u, struct Longname *longname1);
struct Longname *hashlfind(Char *c_addr, UCell u, Cell *a_addr);
struct Longname *tablelfind(Char *c_addr, UCell u, Cell *a_addr);
UCell hashkey1(Char *c_addr, UCell u, UCell ubits);
struct Cellpair parse_white(Char *c_addr1, UCell u1);
Cell rename_file(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
struct Cellquad read_line(Char *c_addr, UCell u1, FILE *wfileid);
struct Cellpair file_status(Char *c_addr, UCell u);
Cell to_float(Char *c_addr, UCell u, Float *r_p, Char dot);
Float v_star(Float *f_addr1, Cell nstride1, Float *f_addr2, Cell nstride2, UCell ucount);
void faxpy(Float ra, Float *f_x, Cell nstridex, Float *f_y, Cell nstridey, UCell ucount);
UCell lshift(UCell u1, UCell n);
UCell rshift(UCell u1, UCell n);
int gforth_system(Char *c_addr, UCell u);
void gforth_ms(UCell u);
UCell gforth_dlopen(Char *c_addr, UCell u);
Cell capscompare(Char *c_addr1, UCell u1, Char *c_addr2, UCell u2);
int gf_ungetc(int c, FILE *stream);
void gf_regetc(FILE *stream);
int gf_ungottenc(FILE *stream);
/* signal handler stuff */
void install_signal_handlers(void);
void throw(int code);
/* throw codes */
#define BALL_DIVZERO -10
#define BALL_RESULTRANGE -11
typedef void Sigfunc(int);
Sigfunc *bsd_signal(int signo, Sigfunc *func);
/* dblsub routines */
DCell dnegate(DCell d1);
UDCell ummul (UCell a, UCell b);
DCell mmul (Cell a, Cell b);
UDCell umdiv (UDCell u, UCell v);
DCell smdiv (DCell num, Cell denom);
DCell fmdiv (DCell num, Cell denom);
Cell memcasecmp(const Char *s1, const Char *s2, Cell n);
void vm_print_profile(FILE *file);
void vm_count_block(Xt *ip);
/* dynamic superinstruction stuff */
void compile_prim1(Cell *start);
void finish_code(void);
int forget_dyncode(Address code);
Label decompile_code(Label prim);
extern int offset_image;
extern int die_on_signal;
extern int ignore_async_signals;
extern UCell pagesize;
extern ImageHeader *gforth_header;
extern Label *vm_prims;
extern Label *xts;
extern Cell npriminfos;
#ifdef HAS_DEBUG
extern int debug;
#else
# define debug 0
#endif
extern PER_THREAD Cell *gforth_SP;
extern PER_THREAD Cell *gforth_RP;
extern PER_THREAD Address gforth_LP;
extern PER_THREAD Float *gforth_FP;
extern PER_THREAD Address gforth_UP;
extern void * gforth_pointers(Cell n);
#ifdef HAS_FFCALL
extern void gforth_callback(Xt* fcall, void * alist);
#endif
#ifdef NO_IP
extern Label next_code;
#endif
#ifdef HAS_FILE
extern char* fileattr[6];
extern char* pfileattr[6];
extern int ufileattr[6];
#endif
#ifdef PRINT_SUPER_LENGTHS
Cell prim_length(Cell prim);
void print_super_lengths();
#endif
/* declare all the functions that are missing */
#ifndef HAVE_ATANH
extern double atanh(double r1);
extern double asinh(double r1);
extern double acosh(double r1);
#endif
#ifndef HAVE_ECVT
/* extern char* ecvt(double x, int len, int* exp, int* sign);*/
#endif
#ifndef HAVE_MEMMOVE
/* extern char *memmove(char *dest, const char *src, long n); */
#endif
#ifndef HAVE_POW10
extern double pow10(double x);
#endif
#ifndef HAVE_STRERROR
extern char *strerror(int err);
#endif
#ifndef HAVE_STRSIGNAL
extern char *strsignal(int sig);
#endif
#ifndef HAVE_STRTOUL
extern unsigned long int strtoul(const char *nptr, char **endptr, int base);
#endif
#define GROUP(x, n)
#define GROUPADD(n)
#ifdef HAVE_ENDIAN_H
#include <endian.h>
#else
#define BSWAP16(x) ((((x) >> 8) & 0xff | (((x) & 0xff) << 8)))
#define BSWAP32(x) ((BSWAP16((x) >> 16) | (BSWAP16(x) << 16)))
#define BSWAP64(x) ((BSWAP32((x) >> 32) | (BSWAP32(x) << 32)))
#ifdef WORDS_BIGENDIAN
#define htobe16(x) (x)
#define htobe32(x) (x)
#define htobe64(x) (x)
#define be16toh(x) (x)
#define be32toh(x) (x)
#define be64toh(x) (x)
#define htole16(x) BSWAP16(x)
#define htole32(x) BSWAP32(x)
#define htole64(x) BSWAP64(x)
#define le16toh(x) BSWAP16(x)
#define le32toh(x) BSWAP32(x)
#define le64toh(x) BSWAP64(x)
#else
#define htobe16(x) BSWAP16(x)
#define htobe32(x) BSWAP32(x)
#define htobe64(x) BSWAP64(x)
#define be16toh(x) BSWAP16(x)
#define be32toh(x) BSWAP32(x)
#define be64toh(x) BSWAP64(x)
#define htole16(x) (x)
#define htole32(x) (x)
#define htole64(x) (x)
#define le16toh(x) (x)
#define le32toh(x) (x)
#define le64toh(x) (x)
#endif
#endif