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ea17899018
* libguile/vm-engine.h: If __llvm__ is defined, undef HAVE_LABELS_AS_VALUES. * libguile/vm-expand.h: Likewise.
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/* Copyright (C) 2001 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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/*
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* As of "gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build
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* 2336.1.00)" it appears that llvm-gcc doesn't handle labels-as-values
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* as efficiently as the basic switch statement, so we want to switch
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* them off.
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*
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* (See also vm-engine.h.)
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*/
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#ifdef __llvm__
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# undef HAVE_LABELS_AS_VALUES
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#endif
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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): VM_LABEL(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 = code_; \
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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[code] = 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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