version 1.90, 2006/03/11 23:05:09
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version 1.109, 2008/07/15 16:11:49
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/* Gforth virtual machine (aka inner interpreter) |
/* Gforth virtual machine (aka inner interpreter) |
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Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005 Free Software Foundation, Inc. |
Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008 Free Software Foundation, Inc. |
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This file is part of Gforth. |
This file is part of Gforth. |
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Gforth is free software; you can redistribute it and/or |
Gforth is free software; you can redistribute it and/or |
modify it under the terms of the GNU General Public License |
modify it under the terms of the GNU General Public License |
as published by the Free Software Foundation; either version 2 |
as published by the Free Software Foundation, either version 3 |
of the License, or (at your option) any later version. |
of the License, or (at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
This program is distributed in the hope that it will be useful, |
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GNU General Public License for more details. |
GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
You should have received a copy of the GNU General Public License |
along with this program; if not, write to the Free Software |
along with this program; if not, see http://www.gnu.org/licenses/. |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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*/ |
*/ |
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#if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING) |
#if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING) |
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#else |
#else |
#define USE_TOS |
#define USE_TOS |
#endif |
#endif |
#define USE_NO_FTOS |
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#include "config.h" |
#include "config.h" |
#include "forth.h" |
#include "forth.h" |
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#include "fnmatch.h" |
#include "fnmatch.h" |
#endif |
#endif |
#else |
#else |
#include "systypes.h" |
/* #include <systypes.h> */ |
#endif |
#endif |
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#if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN) /* what else? */ |
#if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN) /* what else? */ |
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#include <callback.h> |
#include <callback.h> |
#endif |
#endif |
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#ifdef HAS_LIBFFI |
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#include <ffi.h> |
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#endif |
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#ifndef SEEK_SET |
#ifndef SEEK_SET |
/* should be defined in stdio.h, but some systems don't have it */ |
/* should be defined in stdio.h, but some systems don't have it */ |
#define SEEK_SET 0 |
#define SEEK_SET 0 |
Line 98 extern int gforth_memcmp(const char * s1
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Line 92 extern int gforth_memcmp(const char * s1
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#define NEWLINE '\n' |
#define NEWLINE '\n' |
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/* These two flags control whether divisions are checked by software. |
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The CHECK_DIVISION_SW is for those cases where the event is a |
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division by zero or overflow on the C level, and might be reported |
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by hardware; we might check forr that in autoconf and set the |
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switch appropriately, but currently don't. The CHECK_DIVISION flag |
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is for the other cases. */ |
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#ifdef GFORTH_DEBUGGING |
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#define CHECK_DIVISION_SW 1 |
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#define CHECK_DIVISION 1 |
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#else |
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#define CHECK_DIVISION_SW 0 |
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#define CHECK_DIVISION 0 |
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#endif |
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/* conversion on fetch */ |
/* conversion on fetch */ |
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#define vm_Cell2f(_cell,_x) ((_x)=(Bool)(_cell)) |
#define vm_Cell2f(_cell,_x) ((_x)=(Bool)(_cell)) |
Line 211 extern int gforth_memcmp(const char * s1
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Line 219 extern int gforth_memcmp(const char * s1
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#endif |
#endif |
#define SUPER_CONTINUE |
#define SUPER_CONTINUE |
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#ifdef ASMCOMMENT |
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/* an individualized asm statement so that (hopefully) gcc's optimizer |
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does not do cross-jumping */ |
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#define asmcomment(string) asm(ASMCOMMENT string) |
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#else |
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/* we don't know how to do an asm comment, so we just do an empty asm */ |
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#define asmcomment(string) asm("") |
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#endif |
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#ifdef GFORTH_DEBUGGING |
#ifdef GFORTH_DEBUGGING |
#if DEBUG |
#if DEBUG |
#define NAME(string) { saved_ip=ip; asm("# "string); fprintf(stderr,"%08lx depth=%3ld: "string"\n",(Cell)ip,sp0+3-sp);} |
#define NAME(string) { saved_ip=ip; asmcomment(string); fprintf(stderr,"%08lx depth=%3ld tos=%016lx: "string"\n",(Cell)ip,sp0+3-sp,sp[0]);} |
#else /* !DEBUG */ |
#else /* !DEBUG */ |
#define NAME(string) { saved_ip=ip; asm(""); } |
#define NAME(string) { saved_ip=ip; asm(""); } |
/* the asm here is to avoid reordering of following stuff above the |
/* the asm here is to avoid reordering of following stuff above the |
Line 225 extern int gforth_memcmp(const char * s1
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Line 242 extern int gforth_memcmp(const char * s1
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#elif DEBUG |
#elif DEBUG |
# define NAME(string) {Cell __depth=sp0+3-sp; int i; fprintf(stderr,"%08lx depth=%3ld: "string,(Cell)ip,sp0+3-sp); for (i=__depth-1; i>0; i--) fprintf(stderr, " $%lx",sp[i]); fprintf(stderr, " $%lx\n",spTOS); } |
# define NAME(string) {Cell __depth=sp0+3-sp; int i; fprintf(stderr,"%08lx depth=%3ld: "string,(Cell)ip,sp0+3-sp); for (i=__depth-1; i>0; i--) fprintf(stderr, " $%lx",sp[i]); fprintf(stderr, " $%lx\n",spTOS); } |
#else |
#else |
# define NAME(string) asm("# "string); |
# define NAME(string) asmcomment(string); |
#endif |
#endif |
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#ifdef DEBUG |
#ifdef DEBUG |
Line 242 extern int gforth_memcmp(const char * s1
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Line 259 extern int gforth_memcmp(const char * s1
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} |
} |
#endif |
#endif |
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#ifdef STANDALONE |
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jmp_buf throw_jmp_buf; |
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void throw(int code) |
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{ |
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longjmp(throw_jmp_buf,code); /* !! or use siglongjmp ? */ |
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} |
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#endif |
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#if defined(HAS_FFCALL) || defined(HAS_LIBFFI) |
#if defined(HAS_FFCALL) || defined(HAS_LIBFFI) |
#define SAVE_REGS IF_fpTOS(fp[0]=fpTOS); gforth_SP=sp; gforth_FP=fp; gforth_RP=rp; gforth_LP=lp; |
#define SAVE_REGS IF_fpTOS(fp[0]=fpTOS); gforth_SP=sp; gforth_FP=fp; gforth_RP=rp; gforth_LP=lp; |
#define REST_REGS sp=gforth_SP; fp=gforth_FP; rp=gforth_RP; lp=gforth_LP; IF_fpTOS(fpTOS=fp[0]); |
#define REST_REGS sp=gforth_SP; fp=gforth_FP; rp=gforth_RP; lp=gforth_LP; IF_fpTOS(fpTOS=fp[0]); |
Line 252 extern int gforth_memcmp(const char * s1
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Line 278 extern int gforth_memcmp(const char * s1
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#define VARIANT(v) (v) |
#define VARIANT(v) (v) |
#define JUMP(target) goto I_noop |
#define JUMP(target) goto I_noop |
#define LABEL(name) H_##name: asm(""); I_##name: |
#define LABEL(name) H_##name: asm(""); I_##name: |
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#define LABEL3(name) J_##name: asm(""); |
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#elif ENGINE==2 |
#elif ENGINE==2 |
/* variant with padding between VM instructions for finding out |
/* variant with padding between VM instructions for finding out |
Line 260 extern int gforth_memcmp(const char * s1
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Line 287 extern int gforth_memcmp(const char * s1
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#define VARIANT(v) (v) |
#define VARIANT(v) (v) |
#define JUMP(target) goto I_noop |
#define JUMP(target) goto I_noop |
#define LABEL(name) H_##name: SKIP16; I_##name: |
#define LABEL(name) H_##name: SKIP16; I_##name: |
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/* the SKIP16 after LABEL3 is there, because the ARM gcc may place |
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some constants after the final branch, and may refer to them from |
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the code before label3. Since we don't copy the constants, we have |
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to make sure that such code is recognized as non-relocatable. */ |
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#define LABEL3(name) J_##name: SKIP16; |
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#elif ENGINE==3 |
#elif ENGINE==3 |
/* variant with different immediate arguments for finding out |
/* variant with different immediate arguments for finding out |
Line 268 extern int gforth_memcmp(const char * s1
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Line 300 extern int gforth_memcmp(const char * s1
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#define VARIANT(v) ((v)^0xffffffff) |
#define VARIANT(v) ((v)^0xffffffff) |
#define JUMP(target) goto K_lit |
#define JUMP(target) goto K_lit |
#define LABEL(name) H_##name: asm(""); I_##name: |
#define LABEL(name) H_##name: asm(""); I_##name: |
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#define LABEL3(name) J_##name: asm(""); |
#else |
#else |
#error illegal ENGINE value |
#error illegal ENGINE value |
#endif /* ENGINE */ |
#endif /* ENGINE */ |
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/* the asm(""); is there to get a stop compiled on Itanium */ |
/* the asm(""); is there to get a stop compiled on Itanium */ |
#define LABEL2(name) K_##name: asm(""); |
#define LABEL2(name) K_##name: asm(""); |
#define LABEL3(name) J_##name: asm(""); |
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Label *gforth_engine(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0) |
Label *gforth_engine(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0 sr_proto) |
/* executes code at ip, if ip!=NULL |
/* executes code at ip, if ip!=NULL |
returns array of machine code labels (for use in a loader), if ip==NULL |
returns array of machine code labels (for use in a loader), if ip==NULL |
*/ |
*/ |
{ |
{ |
#ifndef GFORTH_DEBUGGING |
#if defined(GFORTH_DEBUGGING) |
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#if defined(GLOBALS_NONRELOC) |
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register saved_regs *saved_regs_p TOSREG = saved_regs_p0; |
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#endif /* defined(GLOBALS_NONRELOC) */ |
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#else /* !defined(GFORTH_DEBUGGING) */ |
register Cell *rp RPREG; |
register Cell *rp RPREG; |
#endif |
#endif /* !defined(GFORTH_DEBUGGING) */ |
#ifndef NO_IP |
#ifndef NO_IP |
register Xt *ip IPREG = ip0; |
register Xt *ip IPREG = ip0; |
#endif |
#endif |
Line 304 Label *gforth_engine(Xt *ip0, Cell *sp0,
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Line 340 Label *gforth_engine(Xt *ip0, Cell *sp0,
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long long llrv; |
long long llrv; |
void * prv; |
void * prv; |
#endif |
#endif |
#ifdef HAS_LIBFFI |
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extern void * gforth_ritem; |
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extern void ** gforth_clist; |
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extern void ffi_callback(ffi_cif * cif, void * resp, void ** args, Xt * ip); |
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#endif |
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register Address up UPREG = gforth_UP; |
register Address up UPREG = gforth_UP; |
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#if !defined(GFORTH_DEBUGGING) |
register Cell MAYBE_UNUSED spTOS TOSREG; |
register Cell MAYBE_UNUSED spTOS TOSREG; |
register Cell MAYBE_UNUSED spb spbREG; |
register Cell MAYBE_UNUSED spb spbREG; |
register Cell MAYBE_UNUSED spc spcREG; |
register Cell MAYBE_UNUSED spc spcREG; |
Line 319 Label *gforth_engine(Xt *ip0, Cell *sp0,
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Line 351 Label *gforth_engine(Xt *ip0, Cell *sp0,
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register Cell MAYBE_UNUSED spg speREG; |
register Cell MAYBE_UNUSED spg speREG; |
register Cell MAYBE_UNUSED sph speREG; |
register Cell MAYBE_UNUSED sph speREG; |
IF_fpTOS(register Float fpTOS FTOSREG;) |
IF_fpTOS(register Float fpTOS FTOSREG;) |
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#endif /* !defined(GFORTH_DEBUGGING) */ |
#if defined(DOUBLY_INDIRECT) |
#if defined(DOUBLY_INDIRECT) |
static Label *symbols; |
static Label *symbols; |
static void *routines[]= { |
static void *routines[]= { |
Line 345 Label *gforth_engine(Xt *ip0, Cell *sp0,
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Line 378 Label *gforth_engine(Xt *ip0, Cell *sp0,
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#include PRIM_LAB_I |
#include PRIM_LAB_I |
#undef INST_ADDR |
#undef INST_ADDR |
}; |
}; |
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#ifdef STANDALONE |
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#define INST_ADDR(name) ((Label)&&I_##name) |
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#include "image.i" |
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#undef INST_ADDR |
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#endif |
#ifdef CPU_DEP2 |
#ifdef CPU_DEP2 |
CPU_DEP2 |
CPU_DEP2 |
#endif |
#endif |
Line 376 Label *gforth_engine(Xt *ip0, Cell *sp0,
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Line 414 Label *gforth_engine(Xt *ip0, Cell *sp0,
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xts[i] = symbols[i] = &routines[i]; |
xts[i] = symbols[i] = &routines[i]; |
} |
} |
#endif /* defined(DOUBLY_INDIRECT) */ |
#endif /* defined(DOUBLY_INDIRECT) */ |
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#ifdef STANDALONE |
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return image; |
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#else |
return symbols; |
return symbols; |
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#endif |
} |
} |
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#if !(defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)) |
#if !(defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)) |