128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/* Subroutines for the C front end on the POWER and PowerPC architectures.
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Copyright (C) 2002
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Free Software Foundation, Inc.
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Contributed by Zack Weinberg <zack@codesourcery.com>
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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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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "cpplib.h"
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#include "tree.h"
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#include "c-pragma.h"
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#include "errors.h"
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#include "tm_p.h"
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/* Handle the machine specific pragma longcall. Its syntax is
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# pragma longcall ( TOGGLE )
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where TOGGLE is either 0 or 1.
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rs6000_default_long_calls is set to the value of TOGGLE, changing
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whether or not new function declarations receive a longcall
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attribute by default. */
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#define SYNTAX_ERROR(msgid) do { \
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warning (msgid); \
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warning ("ignoring malformed #pragma longcall"); \
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return; \
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} while (0)
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void
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rs6000_pragma_longcall (pfile)
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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{
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tree x, n;
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/* If we get here, generic code has already scanned the directive
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leader and the word "longcall". */
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if (c_lex (&x) != CPP_OPEN_PAREN)
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SYNTAX_ERROR ("missing open paren");
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if (c_lex (&n) != CPP_NUMBER)
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SYNTAX_ERROR ("missing number");
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if (c_lex (&x) != CPP_CLOSE_PAREN)
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SYNTAX_ERROR ("missing close paren");
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if (n != integer_zero_node && n != integer_one_node)
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SYNTAX_ERROR ("number must be 0 or 1");
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if (c_lex (&x) != CPP_EOF)
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warning ("junk at end of #pragma longcall");
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rs6000_default_long_calls = (n == integer_one_node);
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}
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/* Handle defining many CPP flags based on TARGET_xxx. As a general
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policy, rather than trying to guess what flags a user might want a
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#define for, it's better to define a flag for everything. */
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#define builtin_define(TXT) cpp_define (pfile, TXT)
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#define builtin_assert(TXT) cpp_assert (pfile, TXT)
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void
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rs6000_cpu_cpp_builtins (pfile)
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cpp_reader *pfile;
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{
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if (TARGET_POWER2)
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builtin_define ("_ARCH_PWR2");
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else if (TARGET_POWER)
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builtin_define ("_ARCH_PWR");
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if (TARGET_POWERPC)
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builtin_define ("_ARCH_PPC");
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if (TARGET_POWERPC64)
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builtin_define ("_ARCH_PPC64");
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if (! TARGET_POWER && ! TARGET_POWER2 && ! TARGET_POWERPC)
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builtin_define ("_ARCH_COM");
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if (TARGET_ALTIVEC)
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builtin_define ("__ALTIVEC__");
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if (TARGET_SPE)
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builtin_define ("__SPE__");
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if (TARGET_SOFT_FLOAT)
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builtin_define ("_SOFT_FLOAT");
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/* Used by lwarx/stwcx. errata work-around. */
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if (rs6000_cpu == PROCESSOR_PPC405)
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builtin_define ("__PPC405__");
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/* May be overridden by target configuration. */
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RS6000_CPU_CPP_ENDIAN_BUILTINS();
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if (TARGET_LONG_DOUBLE_128)
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builtin_define ("__LONG_DOUBLE_128__");
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switch (rs6000_current_abi)
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{
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case ABI_V4:
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builtin_define ("_CALL_SYSV");
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break;
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case ABI_AIX:
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builtin_define ("_CALL_AIXDESC");
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builtin_define ("_CALL_AIX");
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break;
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case ABI_DARWIN:
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builtin_define ("_CALL_DARWIN");
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break;
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default:
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break;
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}
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}
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