78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
/* Definitions of target machine for GNU compiler,
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for IBM RS/6000 running AIX version 3.1.
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Copyright (C) 1993,1997, 2000, 2001 Free Software Foundation, Inc.
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Contributed by Richard Kenner (kenner@nyu.edu)
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This file is part of GNU CC.
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GNU CC 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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GNU CC 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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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Output something to declare an external symbol to the assembler. Most
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assemblers don't need this.
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If we haven't already, add "[RW]" (or "[DS]" for a function) to the
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name. Normally we write this out along with the name. In the few cases
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where we can't, it gets stripped off. */
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#undef ASM_OUTPUT_EXTERNAL
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#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
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{ rtx _symref = XEXP (DECL_RTL (DECL), 0); \
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if ((TREE_CODE (DECL) == VAR_DECL \
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|| TREE_CODE (DECL) == FUNCTION_DECL) \
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&& (NAME)[strlen (NAME) - 1] != ']') \
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{ \
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char *_name = (char *) permalloc (strlen (XSTR (_symref, 0)) + 5); \
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strcpy (_name, XSTR (_symref, 0)); \
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strcat (_name, TREE_CODE (DECL) == FUNCTION_DECL ? "[DS]" : "[RW]"); \
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XSTR (_symref, 0) = _name; \
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} \
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fputs ("\t.extern ", FILE); \
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assemble_name (FILE, XSTR (_symref, 0)); \
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if (TREE_CODE (DECL) == FUNCTION_DECL) \
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{ \
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fputs ("\n\t.extern .", FILE); \
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RS6000_OUTPUT_BASENAME (FILE, XSTR (_symref, 0)); \
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} \
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putc ('\n', FILE); \
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}
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/* Similar, but for libcall. We only have to worry about the function name,
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not that of the descriptor. */
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#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
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{ fputs ("\t.extern .", FILE); \
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assemble_name (FILE, XSTR (FUN, 0)); \
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putc ('\n', FILE); \
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}
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/* AIX 3.2 defined _AIX32, but older versions do not. */
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-D_IBMR2 -D_AIX -Asystem=unix -Asystem=aix -Acpu=rs6000 -Amachine=rs6000"
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/* AIX 3.1 uses bit 15 in CROR as the magic nop. */
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#undef RS6000_CALL_GLUE
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#define RS6000_CALL_GLUE "cror 15,15,15"
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/* AIX 3.1 does not prepend underscores to itrunc, uitrunc, or mcount. */
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#undef RS6000_ITRUNC
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#define RS6000_ITRUNC "itrunc"
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#undef RS6000_UITRUNC
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#define RS6000_UITRUNC "uitrunc"
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#undef RS6000_MCOUNT
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#define RS6000_MCOUNT ".mcount"
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