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f775e51bce
* libguile/instructions.c (fetch_instruction_table) (scm_lookup_instruction_by_name): Rework so we lazily load instructions into an array keyed by opcode, and a hash table keyed by symbolic name. Much faster, in this hot spot of compilation. * libguile/vm-engine.c (vm_run): Use malloc instead of scm_gc_malloc, given that we aren't ever going to free this thing. * libguile/vm-expand.h (VM_DEFINE_FUNCTION, VM_DEFINE_LOADER): Rework to always be aliases to VM_DEFINE_INSTRUCTION. (VM_DEFINE_INSTRUCTION): In the table case, update to work with fetch_instruction_table().
102 lines
3.8 KiB
C
102 lines
3.8 KiB
C
/* Copyright (C) 2001 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#ifndef VM_LABEL
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#define VM_LABEL(tag) l_##tag
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#define VM_OPCODE(tag) scm_op_##tag
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#ifdef HAVE_LABELS_AS_VALUES
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#define VM_TAG(tag) VM_LABEL(tag):
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#define VM_ADDR(tag) &&VM_LABEL(tag)
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#else /* not HAVE_LABELS_AS_VALUES */
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#define VM_TAG(tag) case VM_OPCODE(tag):
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#define VM_ADDR(tag) NULL
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#endif /* not HAVE_LABELS_AS_VALUES */
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#endif /* VM_LABEL */
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#undef VM_DEFINE_FUNCTION
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#undef VM_DEFINE_LOADER
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#define VM_DEFINE_FUNCTION(code,tag,name,nargs) \
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VM_DEFINE_INSTRUCTION(code,tag,name,0,nargs,1)
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#define VM_DEFINE_LOADER(code,tag,name) \
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VM_DEFINE_INSTRUCTION(code,tag,name,-1,0,1)
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#undef VM_DEFINE_INSTRUCTION
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/*
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* These will go to scm_instruction_table in instructions.c
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*/
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#ifdef VM_INSTRUCTION_TO_TABLE
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#define VM_DEFINE_INSTRUCTION(code_,tag_,name_,len_,npop_,npush_) \
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table[VM_OPCODE (tag_)].opcode = VM_OPCODE (tag_); \
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table[VM_OPCODE (tag_)].name = name_; \
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table[VM_OPCODE (tag_)].len = len_; \
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table[VM_OPCODE (tag_)].npop = npop_; \
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table[VM_OPCODE (tag_)].npush = npush_;
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#else
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#ifdef VM_INSTRUCTION_TO_LABEL
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/*
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* These will go to jump_table in vm_engine.c
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*/
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#define VM_DEFINE_INSTRUCTION(code,tag,name,len,npop,npush) jump_table[VM_OPCODE (tag)] = VM_ADDR (tag);
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#else
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#ifdef VM_INSTRUCTION_TO_OPCODE
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/*
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* These will go to scm_opcode in instructions.h
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*/
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#define VM_DEFINE_INSTRUCTION(code,tag,name,len,npop,npush) VM_OPCODE (tag) = code,
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#else /* Otherwise */
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/*
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* These are directly included in vm_engine.c
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*/
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#define VM_DEFINE_INSTRUCTION(code,tag,name,len,npop,npush) VM_TAG (tag)
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#endif /* VM_INSTRUCTION_TO_OPCODE */
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#endif /* VM_INSTRUCTION_TO_LABEL */
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#endif /* VM_INSTRUCTION_TO_TABLE */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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