-/* 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>
-#include "config.h"
-
-\f
-/*
- * Instruction
- */
-
-/* Opcode */
-enum scm_opcode {
-#define VM_INSTRUCTION_TO_OPCODE
-#include "vm_expand.h"
-#include "vm_system.i"
-#include "vm_scheme.i"
-#include "vm_number.i"
-#undef VM_INSTRUCTION_TO_OPCODE
- 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 */
- 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)
-
-\f
-/*
- * 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);
-
-\f
-/*
- * 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);
-
-\f
-/*
- * VM Address
- */
-
-#define SCM_VM_MAKE_ADDRESS(ADDR) SCM_MAKINUM ((long) (ADDR))
-#define SCM_VM_ADDRESS(OBJ) ((SCM *) SCM_INUM (OBJ))
-
-\f
-/*
- * 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])
-
-\f
-/*
- * 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)
-
-\f
-/*
- * 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 6
-#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_EXTERNAL_LINK(FP) (FP[-4])
-#define SCM_VM_FRAME_STACK_POINTER(FP) (FP[-5])
-#define SCM_VM_FRAME_RETURN_ADDRESS(FP) (FP[-6])
-
-\f
-/*
- * 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 */
+/* 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>
+#include "config.h"
+#include "programs.h"
+
+/*
+ * VM Address
+ */
+
+#define SCM_VM_MAKE_FRAME_ADDRESS(ptr) SCM_PACK (ptr)
+#define SCM_VM_FRAME_ADDRESS(addr) ((SCM *) SCM_UNPACK (addr))
+
+#define SCM_VM_MAKE_BYTE_ADDRESS(ptr) SCM_PACK (ptr)
+#define SCM_VM_BYTE_ADDRESS(addr) ((scm_byte_t *) SCM_UNPACK (addr))
+
+/*
+ * VM Frame
+ */
+
+/*
+ | | <- fp + bp->nargs + bp->nlocs
+ +------------------+
+ | Argument 1 |
+ | Argument 2 |
+ | Local variable 1 |
+ | Local varialbe 2 | <- fp
+ | Program |
+ | Dynamic link |
+ | Return address | <- fp - SCM_VM_FRAME_DATA_SIZE
+ +------------------+
+ | |
+*/
+
+/* Frames are allocated on the stack */
+#define SCM_VM_FRAME_DATA_SIZE 3
+#define SCM_VM_FRAME_VARIABLE(fp,i) fp[i]
+#define SCM_VM_FRAME_PROGRAM(fp) fp[-1]
+#define SCM_VM_FRAME_DYNAMIC_LINK(fp) fp[-2]
+#define SCM_VM_FRAME_RETURN_ADDRESS(fp) fp[-3]
+
+#define SCM_VM_FRAME_UPPER_ADDRESS(fp) \
+ (fp + SCM_PROGRAM_NARGS (SCM_VM_FRAME_PROGRAM (fp)) \
+ + SCM_PROGRAM_NLOCS (SCM_VM_FRAME_PROGRAM (fp)))
+#define SCM_VM_FRAME_LOWER_ADDRESS(fp) \
+ (fp - SCM_VM_FRAME_DATA_SIZE)
+
+/*
+ * VM Debug frame
+ */
+
+struct scm_vm_debug_frame {
+ SCM program;
+ SCM variables;
+ SCM dynamic_link;
+};
+
+extern scm_bits_t scm_tc16_vm_debug_frame;
+
+#define SCM_VM_DEBUG_FRAME_P(x) SCM_SMOB_PREDICATE (scm_tc16_vm_debug_frame, x)
+#define SCM_VM_DEBUG_FRAME_DATA(f) ((struct scm_vm_debug_frame *) SCM_SMOB_DATA (f))
+#define SCM_VALIDATE_VM_DEBUG_FRAME(p,x) SCM_MAKE_VALIDATE (p, x, VM_DEBUG_FRAME_P)
+
+#define SCM_VM_DEBUG_FRAME_PROGRAM(f) SCM_VM_DEBUG_FRAME_DATA (f)->program
+#define SCM_VM_DEBUG_FRAME_VARIABLES(f) SCM_VM_DEBUG_FRAME_DATA (f)->variables
+#define SCM_VM_DEBUG_FRAME_DYNAMIC_LINK(f) SCM_VM_DEBUG_FRAME_DATA (f)->dynamic_link
+
+/*
+ * VM
+ */
+
+#define SCM_VM_BOOT_HOOK 0
+#define SCM_VM_HALT_HOOK 1
+#define SCM_VM_NEXT_HOOK 2
+#define SCM_VM_ENTER_HOOK 3
+#define SCM_VM_APPLY_HOOK 4
+#define SCM_VM_EXIT_HOOK 5
+#define SCM_VM_RETURN_HOOK 6
+#define SCM_VM_NUM_HOOKS 7
+
+struct scm_vm {
+ scm_byte_t *ip; /* instruction pointer */
+ SCM *sp; /* stack pointer */
+ SCM *fp; /* frame pointer */
+ size_t stack_size; /* stack size */
+ SCM *stack_base; /* stack base address */
+ SCM *stack_limit; /* stack limit address */
+ SCM hooks[SCM_VM_NUM_HOOKS]; /* hooks */
+ SCM options; /* options */
+ unsigned long cons; /* cons count */
+ unsigned long time; /* time spent */
+ unsigned long clock; /* bogos clock */
+};
+
+#define SCM_VM_P(x) SCM_SMOB_PREDICATE (scm_tc16_vm, x)
+#define SCM_VM_DATA(vm) ((struct scm_vm *) SCM_SMOB_DATA (vm))
+#define SCM_VALIDATE_VM(pos,x) SCM_MAKE_VALIDATE (pos, x, VM_P)
+
+extern SCM scm_make_vm (void);
+extern SCM scm_vm_apply (SCM vm, SCM program, SCM args);
+extern SCM scm_vm_option_ref (SCM vm, SCM key);
+extern SCM scm_vm_option_set_x (SCM vm, SCM key, SCM val);
+
+extern SCM scm_vm_current_frame (SCM vm);
+
+extern void scm_init_vm (void);
+
+#endif /* _VM_H_ */
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff