mirror/guile
mirror/guile
1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-05-18 02:00:20 +02:00
Code Activity

Initial revision

Browse source
This commit is contained in:
Keisuke Nishida 2000-08-22 15:54:19 +00:00
commit a98cef7e6c
36 changed files with 5255 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

226
src/vm.h Normal file
View file

@ -0,0 +1,226 @@
/* Copyright (C) 2000 Free Software Foundation, Inc.
*
* This program 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 2, 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
#ifndef VM_H
#define VM_H
#include <libguile.h>
/*
* Instruction
*/
/* Opcode */
enum scm_opcode {
#include "vm_system.op"
#include "vm_scheme.op"
#include "vm_number.op"
op_last
};
/* Argument type */
/* Modify `mark_bytecode', `scm_make_bytecode', and `scm_bytecode_decode'! */
enum scm_inst_type {
INST_NONE, /* no argument */
INST_INUM, /* fixed integer */
INST_SCM, /* scheme object */
INST_EXT, /* external offset */
INST_TOP, /* top-level variable */
INST_CODE, /* program code */
INST_ADDR /* program address */
};
struct scm_instruction {
enum scm_opcode opcode; /* opcode */
enum scm_inst_type type; /* argument type */
char *name; /* instruction name */
void *addr; /* instruction address */
SCM obj; /* instruction object */
/* fields for VM functions */
char *sname; /* Scheme procedure name */
char nargs; /* the number of arguments */
char restp; /* have a rest argument or not */
};
#define SCM_INSTRUCTION_P(OBJ) SCM_SMOB_PREDICATE (scm_instruction_tag, OBJ)
#define SCM_INSTRUCTION_DATA(INST) ((struct scm_instruction *) SCM_SMOB_DATA (INST))
#define SCM_VALIDATE_INSTRUCTION(POS,OBJ) SCM_MAKE_VALIDATE (POS, OBJ, INSTRUCTION_P)
#define SCM_SYSTEM_INSTRUCTION_P(OBJ) \
(SCM_INSTRUCTION_P (OBJ) && !SCM_INSTRUCTION_DATA(OBJ)->sname)
#define SCM_FUNCTIONAL_INSTRUCTION_P(OBJ) \
(SCM_INSTRUCTION_P (OBJ) && SCM_INSTRUCTION_DATA(OBJ)->sname)
#define SCM_ADDR_TO_CODE(ADDR) SCM_PACK (ADDR)
#define SCM_CODE_TO_ADDR(CODE) ((void *) SCM_UNPACK (CODE))
#define SCM_CODE_TO_DEBUG_ADDR(CODE) instruction_code_to_debug_addr (CODE)
/*
* Bytecode
*/
struct scm_bytecode {
int size; /* the size of the bytecode */
char nreqs; /* the number of required arguments */
char restp; /* have a rest argument or not */
char nvars; /* the number of local variables */
char nexts; /* the number of external variables */
int *exts; /* externalized arguments */
SCM base[0]; /* base address (must be the last!) */
};
#define SCM_BYTECODE_P(OBJ) SCM_SMOB_PREDICATE (scm_bytecode_tag, OBJ)
#define SCM_BYTECODE_DATA(BC) ((struct scm_bytecode *) SCM_SMOB_DATA (BC))
#define SCM_VALIDATE_BYTECODE(POS,OBJ) SCM_MAKE_VALIDATE (POS, OBJ, BYTECODE_P)
#define SCM_BYTECODE_SIZE(BC) SCM_BYTECODE_DATA (BC)->size
#define SCM_BYTECODE_NREQS(BC) SCM_BYTECODE_DATA (BC)->nreqs
#define SCM_BYTECODE_RESTP(BC) SCM_BYTECODE_DATA (BC)->restp
#define SCM_BYTECODE_NVARS(BC) SCM_BYTECODE_DATA (BC)->nvars
#define SCM_BYTECODE_NEXTS(BC) SCM_BYTECODE_DATA (BC)->nexts
#define SCM_BYTECODE_EXTS(BC) SCM_BYTECODE_DATA (BC)->exts
#define SCM_BYTECODE_BASE(BC) SCM_BYTECODE_DATA (BC)->base
extern SCM scm_bytecode_p (SCM obj);
extern SCM scm_make_bytecode (SCM code);
extern SCM scm_bytecode_decode (SCM bytecode);
/*
* Program
*/
#define SCM_MAKE_PROGRAM(CODE,ENV) make_program (CODE, ENV)
#define SCM_PROGRAM_P(OBJ) SCM_SMOB_PREDICATE (scm_program_tag, OBJ)
#define SCM_PROGRAM_CODE(PROG) SCM_CELL_OBJECT_1 (PROG)
#define SCM_PROGRAM_ENV(PROG) SCM_CELL_OBJECT_2 (PROG)
#define SCM_VALIDATE_PROGRAM(POS,PROG) SCM_MAKE_VALIDATE (POS, PROG, PROGRAM_P)
/* Abbreviations */
#define SCM_PROGRAM_SIZE(PROG) SCM_BYTECODE_SIZE (SCM_PROGRAM_CODE (PROG))
#define SCM_PROGRAM_NREQS(PROG) SCM_BYTECODE_NREQS (SCM_PROGRAM_CODE (PROG))
#define SCM_PROGRAM_RESTP(PROG) SCM_BYTECODE_RESTP (SCM_PROGRAM_CODE (PROG))
#define SCM_PROGRAM_NVARS(PROG) SCM_BYTECODE_NVARS (SCM_PROGRAM_CODE (PROG))
#define SCM_PROGRAM_NEXTS(PROG) SCM_BYTECODE_NEXTS (SCM_PROGRAM_CODE (PROG))
#define SCM_PROGRAM_EXTS(PROG) SCM_BYTECODE_EXTS (SCM_PROGRAM_CODE (PROG))
#define SCM_PROGRAM_BASE(PROG) SCM_BYTECODE_BASE (SCM_PROGRAM_CODE (PROG))
extern SCM scm_program_p (SCM obj);
extern SCM scm_make_program (SCM bytecode, SCM env);
extern SCM scm_program_code (SCM program);
extern SCM scm_program_base (SCM program);
/*
* VM Address
*/
#define SCM_VM_MAKE_ADDRESS(ADDR) SCM_MAKINUM ((long) (ADDR))
#define SCM_VM_ADDRESS(OBJ) ((SCM *) SCM_INUM (OBJ))
/*
* VM External
*/
/* VM external maintains a set of variables outside of the stack.
This is used to implement external chain of the environment. */
#define SCM_VM_MAKE_EXTERNAL(SIZE) scm_make_vector (SCM_MAKINUM ((SIZE) + 1), SCM_UNDEFINED)
#define SCM_VM_EXTERNAL_LINK(EXT) (SCM_VELTS (EXT)[0])
#define SCM_VM_EXTERNAL_VARIABLE(EXT,N) (SCM_VELTS (EXT)[(N) + 1])
/*
* VM Continuation
*/
#define SCM_VM_CONT_P(OBJ) SCM_SMOB_PREDICATE (scm_vm_cont_tag, OBJ)
#define SCM_VM_CONT_VMP(CONT) ((struct scm_vm *) SCM_CELL_WORD_1 (CONT))
#define SCM_VM_CAPTURE_CONT(VMP) capture_vm_cont (VMP)
#define SCM_VM_REINSTATE_CONT(VMP,CONT) reinstate_vm_cont (VMP, CONT)
/*
* VM Frame
*/
/* VM frame is allocated in the stack */
/* NOTE: Modify make_vm_frame and VM_NEW_FRAME too! */
#define SCM_VM_FRAME_DATA_SIZE 5
#define SCM_VM_FRAME_VARIABLE(FP,N) (FP[N])
#define SCM_VM_FRAME_SIZE(FP) (FP[-1])
#define SCM_VM_FRAME_PROGRAM(FP) (FP[-2])
#define SCM_VM_FRAME_DYNAMIC_LINK(FP) (FP[-3])
#define SCM_VM_FRAME_STACK_POINTER(FP) (FP[-4])
#define SCM_VM_FRAME_RETURN_ADDRESS(FP) (FP[-5])
/*
* VM
*/
/* Modify make_vm, mark_vm, and SYNC, too! */
struct scm_vm {
SCM ac; /* Accumulator */
SCM *pc; /* Program counter */
SCM *sp; /* Stack pointer */
SCM *fp; /* Frame pointer */
int stack_size;
SCM *stack_base;
SCM *stack_limit;
SCM options;
SCM boot_hook, halt_hook, next_hook;
SCM call_hook, apply_hook, return_hook;
};
#define SCM_VM_P(OBJ) SCM_SMOB_PREDICATE (scm_vm_tag, OBJ)
#define SCM_VM_DATA(VM) ((struct scm_vm *) SCM_SMOB_DATA (VM))
#define SCM_VALIDATE_VM(POS,OBJ) SCM_MAKE_VALIDATE (POS, OBJ, VM_P)
/* Engine types */
#define SCM_VM_REGULAR_ENGINE 0 /* Fail safe and fast enough */
#define SCM_VM_DEBUG_ENGINE 1 /* Functional but very slow */
#endif /* not VM_H */