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jlechner |
/*
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* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
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* Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
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* Copyright (c) 1996 by Silicon Graphics. All rights reserved.
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* Copyright (c) 2000-2004 Hewlett-Packard Development Company, L.P.
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*
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* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
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* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
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*
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* Permission is hereby granted to use or copy this program
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* for any purpose, provided the above notices are retained on all copies.
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* Permission to modify the code and to distribute modified code is granted,
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* provided the above notices are retained, and a notice that the code was
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* modified is included with the above copyright notice.
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*/
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/*
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* This header is private to the gc. It is almost always included from
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* gc_priv.h. However it is possible to include it by itself if just the
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* configuration macros are needed. In that
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* case, a few declarations relying on types declared in gc_priv.h will be
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* omitted.
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*/
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#ifndef GCCONFIG_H
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# define GCCONFIG_H
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# ifndef GC_PRIVATE_H
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/* Fake ptr_t declaration, just to avoid compilation errors. */
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/* This avoids many instances if "ifndef GC_PRIVATE_H" below. */
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typedef struct GC_undefined_struct * ptr_t;
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# endif
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/* Machine dependent parameters. Some tuning parameters can be found */
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/* near the top of gc_private.h. */
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/* Machine specific parts contributed by various people. See README file. */
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/* First a unified test for Linux: */
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# if defined(linux) || defined(__linux__)
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# ifndef LINUX
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# define LINUX
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# endif
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# endif
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/* And one for NetBSD: */
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# if defined(__NetBSD__)
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# define NETBSD
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# endif
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/* And one for OpenBSD: */
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# if defined(__OpenBSD__)
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# define OPENBSD
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# endif
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/* And one for FreeBSD: */
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# if defined(__FreeBSD__)
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# define FREEBSD
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# endif
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/* Determine the machine type: */
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# if defined(__arm__) || defined(__thumb__)
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# define ARM32
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# if !defined(LINUX) && !defined(NETBSD)
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# define NOSYS
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# define mach_type_known
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# endif
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# endif
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# if defined(sun) && defined(mc68000)
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# define M68K
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# define SUNOS4
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# define mach_type_known
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# endif
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# if defined(hp9000s300)
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# define M68K
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# define HP
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# define mach_type_known
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# endif
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# if defined(OPENBSD) && defined(m68k)
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# define M68K
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# define mach_type_known
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# endif
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# if defined(OPENBSD) && defined(__sparc__)
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# define SPARC
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# define mach_type_known
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# endif
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# if defined(NETBSD) && (defined(m68k) || defined(__m68k__))
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# define M68K
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# define mach_type_known
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# endif
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# if defined(NETBSD) && defined(__powerpc__)
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# define POWERPC
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# define mach_type_known
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# endif
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# if defined(NETBSD) && (defined(__arm32__) || defined(__arm__))
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# define ARM32
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# define mach_type_known
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# endif
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# if defined(vax)
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# define VAX
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# ifdef ultrix
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# define ULTRIX
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# else
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# define BSD
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# endif
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# define mach_type_known
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# endif
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# if defined(__NetBSD__) && defined(__vax__)
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# define VAX
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# define mach_type_known
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# endif
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# if defined(mips) || defined(__mips) || defined(_mips)
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# define MIPS
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# if defined(nec_ews) || defined(_nec_ews)
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# define EWS4800
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# endif
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# if !defined(LINUX) && !defined(EWS4800) && !defined(NETBSD)
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# if defined(ultrix) || defined(__ultrix)
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# define ULTRIX
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# else
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# if defined(_SYSTYPE_SVR4) || defined(SYSTYPE_SVR4) \
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|| defined(__SYSTYPE_SVR4__)
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# define IRIX5 /* or IRIX 6.X */
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# else
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# define RISCOS /* or IRIX 4.X */
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# endif
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# endif
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# endif /* !LINUX */
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# define mach_type_known
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# endif
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# if defined(DGUX) && (defined(i386) || defined(__i386__))
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# define I386
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# ifndef _USING_DGUX
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# define _USING_DGUX
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# endif
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# define mach_type_known
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# endif
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# if defined(sequent) && (defined(i386) || defined(__i386__))
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# define I386
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# define SEQUENT
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# define mach_type_known
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# endif
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# if defined(sun) && (defined(i386) || defined(__i386__))
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# define I386
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# define SUNOS5
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# define mach_type_known
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# endif
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# if (defined(__OS2__) || defined(__EMX__)) && defined(__32BIT__)
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# define I386
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# define OS2
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# define mach_type_known
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# endif
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# if defined(ibm032)
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# define RT
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# define mach_type_known
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# endif
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# if defined(sun) && (defined(sparc) || defined(__sparc))
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# define SPARC
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/* Test for SunOS 5.x */
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# include <errno.h>
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# ifdef ECHRNG
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# define SUNOS5
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# else
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# define SUNOS4
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# endif
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# define mach_type_known
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# endif
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# if defined(sparc) && defined(unix) && !defined(sun) && !defined(linux) \
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&& !defined(__OpenBSD__) && !(__NetBSD__)
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# define SPARC
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# define DRSNX
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# define mach_type_known
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# endif
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# if defined(_IBMR2)
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# define RS6000
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# define mach_type_known
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# endif
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# if defined(__NetBSD__) && defined(__sparc__)
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# define SPARC
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# define mach_type_known
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# endif
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# if defined(_M_XENIX) && defined(_M_SYSV) && defined(_M_I386)
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/* The above test may need refinement */
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# define I386
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# if defined(_SCO_ELF)
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# define SCO_ELF
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# else
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# define SCO
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# endif
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# define mach_type_known
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# endif
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# if defined(_AUX_SOURCE)
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# define M68K
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# define SYSV
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# define mach_type_known
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# endif
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# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) \
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|| defined(hppa) || defined(__hppa__)
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# define HP_PA
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# ifndef LINUX
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# define HPUX
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# endif
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# define mach_type_known
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# endif
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# if defined(__ia64) && defined(_HPUX_SOURCE)
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# define IA64
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# define HPUX
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# define mach_type_known
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# endif
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# if defined(__BEOS__) && defined(_X86_)
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# define I386
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# define BEOS
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# define mach_type_known
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# endif
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# if defined(LINUX) && (defined(i386) || defined(__i386__))
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# define I386
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# define mach_type_known
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# endif
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# if defined(LINUX) && defined(__x86_64__)
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# define X86_64
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# define mach_type_known
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# endif
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# if defined(LINUX) && (defined(__ia64__) || defined(__ia64))
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# define IA64
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# define mach_type_known
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# endif
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| 228 |
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# if defined(LINUX) && defined(__arm__)
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# define ARM32
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| 230 |
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# define mach_type_known
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# endif
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| 232 |
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# if defined(LINUX) && defined(__cris__)
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| 233 |
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# ifndef CRIS
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# define CRIS
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| 235 |
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# endif
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| 236 |
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# define mach_type_known
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| 237 |
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# endif
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| 238 |
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# if defined(LINUX) && (defined(powerpc) || defined(__powerpc__) || defined(powerpc64) || defined(__powerpc64__))
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| 239 |
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# define POWERPC
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| 240 |
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# define mach_type_known
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| 241 |
|
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# endif
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| 242 |
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# if defined(FREEBSD) && (defined(powerpc) || defined(__powerpc__))
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| 243 |
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# define POWERPC
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| 244 |
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# define mach_type_known
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| 245 |
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# endif
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| 246 |
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# if defined(LINUX) && defined(__mc68000__)
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| 247 |
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# define M68K
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| 248 |
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# define mach_type_known
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| 249 |
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# endif
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| 250 |
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# if defined(LINUX) && (defined(sparc) || defined(__sparc__))
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| 251 |
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# define SPARC
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| 252 |
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# define mach_type_known
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| 253 |
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# endif
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| 254 |
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# if defined(LINUX) && defined(__arm__)
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| 255 |
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# define ARM32
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| 256 |
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# define mach_type_known
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| 257 |
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# endif
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| 258 |
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# if defined(LINUX) && defined(__sh__)
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| 259 |
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# define SH
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| 260 |
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# define mach_type_known
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| 261 |
|
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# endif
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| 262 |
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# if defined(LINUX) && defined(__m32r__)
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| 263 |
|
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# define M32R
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| 264 |
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# define mach_type_known
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| 265 |
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# endif
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| 266 |
|
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# if defined(__alpha) || defined(__alpha__)
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| 267 |
|
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# define ALPHA
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| 268 |
|
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# if !defined(LINUX) && !defined(NETBSD) && !defined(OPENBSD) && !defined(FREEBSD)
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| 269 |
|
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# define OSF1 /* a.k.a Digital Unix */
|
| 270 |
|
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# endif
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| 271 |
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# define mach_type_known
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| 272 |
|
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# endif
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| 273 |
|
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# if defined(_AMIGA) && !defined(AMIGA)
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| 274 |
|
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# define AMIGA
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| 275 |
|
|
# endif
|
| 276 |
|
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# ifdef AMIGA
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| 277 |
|
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# define M68K
|
| 278 |
|
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# define mach_type_known
|
| 279 |
|
|
# endif
|
| 280 |
|
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# if defined(THINK_C) || defined(__MWERKS__) && !defined(__powerc)
|
| 281 |
|
|
# define M68K
|
| 282 |
|
|
# define MACOS
|
| 283 |
|
|
# define mach_type_known
|
| 284 |
|
|
# endif
|
| 285 |
|
|
# if defined(__MWERKS__) && defined(__powerc) && !defined(__MACH__)
|
| 286 |
|
|
# define POWERPC
|
| 287 |
|
|
# define MACOS
|
| 288 |
|
|
# define mach_type_known
|
| 289 |
|
|
# endif
|
| 290 |
|
|
# if defined(macosx) \
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| 291 |
|
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|| defined(__APPLE__) && defined(__MACH__) && defined(__ppc__) \
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| 292 |
|
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|| defined(__APPLE__) && defined(__MACH__) && defined(__ppc64__)
|
| 293 |
|
|
# define DARWIN
|
| 294 |
|
|
# define POWERPC
|
| 295 |
|
|
# define mach_type_known
|
| 296 |
|
|
# endif
|
| 297 |
|
|
# if defined(__APPLE__) && defined(__MACH__) && defined(__i386__)
|
| 298 |
|
|
# define DARWIN
|
| 299 |
|
|
# define I386
|
| 300 |
|
|
--> Not really supported, but at least we recognize it.
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| 301 |
|
|
# endif
|
| 302 |
|
|
# if defined(NeXT) && defined(mc68000)
|
| 303 |
|
|
# define M68K
|
| 304 |
|
|
# define NEXT
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| 305 |
|
|
# define mach_type_known
|
| 306 |
|
|
# endif
|
| 307 |
|
|
# if defined(NeXT) && (defined(i386) || defined(__i386__))
|
| 308 |
|
|
# define I386
|
| 309 |
|
|
# define NEXT
|
| 310 |
|
|
# define mach_type_known
|
| 311 |
|
|
# endif
|
| 312 |
|
|
# if defined(__OpenBSD__) && (defined(i386) || defined(__i386__))
|
| 313 |
|
|
# define I386
|
| 314 |
|
|
# define OPENBSD
|
| 315 |
|
|
# define mach_type_known
|
| 316 |
|
|
# endif
|
| 317 |
|
|
# if defined(FREEBSD) && (defined(i386) || defined(__i386__))
|
| 318 |
|
|
# define I386
|
| 319 |
|
|
# define mach_type_known
|
| 320 |
|
|
# endif
|
| 321 |
|
|
# if defined(__NetBSD__) && (defined(i386) || defined(__i386__))
|
| 322 |
|
|
# define I386
|
| 323 |
|
|
# define mach_type_known
|
| 324 |
|
|
# endif
|
| 325 |
|
|
# if defined(__NetBSD__) && defined(__x86_64__)
|
| 326 |
|
|
# define X86_64
|
| 327 |
|
|
# define mach_type_known
|
| 328 |
|
|
# endif
|
| 329 |
|
|
# if defined(bsdi) && (defined(i386) || defined(__i386__))
|
| 330 |
|
|
# define I386
|
| 331 |
|
|
# define BSDI
|
| 332 |
|
|
# define mach_type_known
|
| 333 |
|
|
# endif
|
| 334 |
|
|
# if !defined(mach_type_known) && defined(__386BSD__)
|
| 335 |
|
|
# define I386
|
| 336 |
|
|
# define THREE86BSD
|
| 337 |
|
|
# define mach_type_known
|
| 338 |
|
|
# endif
|
| 339 |
|
|
# if defined(_CX_UX) && defined(_M88K)
|
| 340 |
|
|
# define M88K
|
| 341 |
|
|
# define CX_UX
|
| 342 |
|
|
# define mach_type_known
|
| 343 |
|
|
# endif
|
| 344 |
|
|
# if defined(DGUX) && defined(m88k)
|
| 345 |
|
|
# define M88K
|
| 346 |
|
|
/* DGUX defined */
|
| 347 |
|
|
# define mach_type_known
|
| 348 |
|
|
# endif
|
| 349 |
|
|
# if defined(_WIN32_WCE)
|
| 350 |
|
|
/* SH3, SH4, MIPS already defined for corresponding architectures */
|
| 351 |
|
|
# if defined(SH3) || defined(SH4)
|
| 352 |
|
|
# define SH
|
| 353 |
|
|
# endif
|
| 354 |
|
|
# if defined(x86)
|
| 355 |
|
|
# define I386
|
| 356 |
|
|
# endif
|
| 357 |
|
|
# if defined(ARM)
|
| 358 |
|
|
# define ARM32
|
| 359 |
|
|
# endif
|
| 360 |
|
|
# define MSWINCE
|
| 361 |
|
|
# define mach_type_known
|
| 362 |
|
|
# else
|
| 363 |
|
|
# if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) \
|
| 364 |
|
|
|| defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__)
|
| 365 |
|
|
# define I386
|
| 366 |
|
|
# define MSWIN32 /* or Win32s */
|
| 367 |
|
|
# define mach_type_known
|
| 368 |
|
|
# endif
|
| 369 |
|
|
# if defined(_MSC_VER) && defined(_M_IA64)
|
| 370 |
|
|
# define IA64
|
| 371 |
|
|
# define MSWIN32 /* Really win64, but we don't treat 64-bit */
|
| 372 |
|
|
/* variants as a differnt platform. */
|
| 373 |
|
|
# endif
|
| 374 |
|
|
# endif
|
| 375 |
|
|
# if defined(__DJGPP__)
|
| 376 |
|
|
# define I386
|
| 377 |
|
|
# ifndef DJGPP
|
| 378 |
|
|
# define DJGPP /* MSDOS running the DJGPP port of GCC */
|
| 379 |
|
|
# endif
|
| 380 |
|
|
# define mach_type_known
|
| 381 |
|
|
# endif
|
| 382 |
|
|
# if defined(__CYGWIN32__) || defined(__CYGWIN__)
|
| 383 |
|
|
# define I386
|
| 384 |
|
|
# define CYGWIN32
|
| 385 |
|
|
# define mach_type_known
|
| 386 |
|
|
# endif
|
| 387 |
|
|
# if defined(__MINGW32__)
|
| 388 |
|
|
# define I386
|
| 389 |
|
|
# define MSWIN32
|
| 390 |
|
|
# define mach_type_known
|
| 391 |
|
|
# endif
|
| 392 |
|
|
# if defined(__BORLANDC__)
|
| 393 |
|
|
# define I386
|
| 394 |
|
|
# define MSWIN32
|
| 395 |
|
|
# define mach_type_known
|
| 396 |
|
|
# endif
|
| 397 |
|
|
# if defined(_UTS) && !defined(mach_type_known)
|
| 398 |
|
|
# define S370
|
| 399 |
|
|
# define UTS4
|
| 400 |
|
|
# define mach_type_known
|
| 401 |
|
|
# endif
|
| 402 |
|
|
# if defined(__pj__)
|
| 403 |
|
|
# define PJ
|
| 404 |
|
|
# define mach_type_known
|
| 405 |
|
|
# endif
|
| 406 |
|
|
# if defined(__embedded__) && defined(PPC)
|
| 407 |
|
|
# define POWERPC
|
| 408 |
|
|
# define NOSYS
|
| 409 |
|
|
# define mach_type_known
|
| 410 |
|
|
# endif
|
| 411 |
|
|
/* Ivan Demakov */
|
| 412 |
|
|
# if defined(__WATCOMC__) && defined(__386__)
|
| 413 |
|
|
# define I386
|
| 414 |
|
|
# if !defined(OS2) && !defined(MSWIN32) && !defined(DOS4GW)
|
| 415 |
|
|
# if defined(__OS2__)
|
| 416 |
|
|
# define OS2
|
| 417 |
|
|
# else
|
| 418 |
|
|
# if defined(__WINDOWS_386__) || defined(__NT__)
|
| 419 |
|
|
# define MSWIN32
|
| 420 |
|
|
# else
|
| 421 |
|
|
# define DOS4GW
|
| 422 |
|
|
# endif
|
| 423 |
|
|
# endif
|
| 424 |
|
|
# endif
|
| 425 |
|
|
# define mach_type_known
|
| 426 |
|
|
# endif
|
| 427 |
|
|
# if defined(__s390__) && defined(LINUX)
|
| 428 |
|
|
# define S390
|
| 429 |
|
|
# define mach_type_known
|
| 430 |
|
|
# endif
|
| 431 |
|
|
# if defined(__GNU__)
|
| 432 |
|
|
# if defined(__i386__)
|
| 433 |
|
|
/* The Debian Hurd running on generic PC */
|
| 434 |
|
|
# define HURD
|
| 435 |
|
|
# define I386
|
| 436 |
|
|
# define mach_type_known
|
| 437 |
|
|
# endif
|
| 438 |
|
|
# endif
|
| 439 |
|
|
|
| 440 |
|
|
/* Feel free to add more clauses here */
|
| 441 |
|
|
|
| 442 |
|
|
/* Or manually define the machine type here. A machine type is */
|
| 443 |
|
|
/* characterized by the architecture. Some */
|
| 444 |
|
|
/* machine types are further subdivided by OS. */
|
| 445 |
|
|
/* the macros ULTRIX, RISCOS, and BSD to distinguish. */
|
| 446 |
|
|
/* Note that SGI IRIX is treated identically to RISCOS. */
|
| 447 |
|
|
/* SYSV on an M68K actually means A/UX. */
|
| 448 |
|
|
/* The distinction in these cases is usually the stack starting address */
|
| 449 |
|
|
# ifndef mach_type_known
|
| 450 |
|
|
--> unknown machine type
|
| 451 |
|
|
# endif
|
| 452 |
|
|
/* Mapping is: M68K ==> Motorola 680X0 */
|
| 453 |
|
|
/* (SUNOS4,HP,NEXT, and SYSV (A/UX), */
|
| 454 |
|
|
/* MACOS and AMIGA variants) */
|
| 455 |
|
|
/* I386 ==> Intel 386 */
|
| 456 |
|
|
/* (SEQUENT, OS2, SCO, LINUX, NETBSD, */
|
| 457 |
|
|
/* FREEBSD, THREE86BSD, MSWIN32, */
|
| 458 |
|
|
/* BSDI,SUNOS5, NEXT, other variants) */
|
| 459 |
|
|
/* NS32K ==> Encore Multimax */
|
| 460 |
|
|
/* MIPS ==> R2000 or R3000 */
|
| 461 |
|
|
/* (RISCOS, ULTRIX variants) */
|
| 462 |
|
|
/* VAX ==> DEC VAX */
|
| 463 |
|
|
/* (BSD, ULTRIX variants) */
|
| 464 |
|
|
/* RS6000 ==> IBM RS/6000 AIX3.X */
|
| 465 |
|
|
/* RT ==> IBM PC/RT */
|
| 466 |
|
|
/* HP_PA ==> HP9000/700 & /800 */
|
| 467 |
|
|
/* HP/UX, LINUX */
|
| 468 |
|
|
/* SPARC ==> SPARC v7/v8/v9 */
|
| 469 |
|
|
/* (SUNOS4, SUNOS5, LINUX, */
|
| 470 |
|
|
/* DRSNX variants) */
|
| 471 |
|
|
/* ALPHA ==> DEC Alpha */
|
| 472 |
|
|
/* (OSF1 and LINUX variants) */
|
| 473 |
|
|
/* M88K ==> Motorola 88XX0 */
|
| 474 |
|
|
/* (CX_UX and DGUX) */
|
| 475 |
|
|
/* S370 ==> 370-like machine */
|
| 476 |
|
|
/* running Amdahl UTS4 */
|
| 477 |
|
|
/* S390 ==> 390-like machine */
|
| 478 |
|
|
/* running LINUX */
|
| 479 |
|
|
/* ARM32 ==> Intel StrongARM */
|
| 480 |
|
|
/* IA64 ==> Intel IPF */
|
| 481 |
|
|
/* (e.g. Itanium) */
|
| 482 |
|
|
/* (LINUX and HPUX) */
|
| 483 |
|
|
/* SH ==> Hitachi SuperH */
|
| 484 |
|
|
/* (LINUX & MSWINCE) */
|
| 485 |
|
|
/* X86_64 ==> AMD x86-64 */
|
| 486 |
|
|
/* POWERPC ==> IBM/Apple PowerPC */
|
| 487 |
|
|
/* (MACOS(<=9),DARWIN(incl.MACOSX),*/
|
| 488 |
|
|
/* LINUX, NETBSD, NOSYS variants) */
|
| 489 |
|
|
/* CRIS ==> Axis Etrax */
|
| 490 |
|
|
/* M32R ==> Renesas M32R */
|
| 491 |
|
|
|
| 492 |
|
|
|
| 493 |
|
|
/*
|
| 494 |
|
|
* For each architecture and OS, the following need to be defined:
|
| 495 |
|
|
*
|
| 496 |
|
|
* CPP_WORD_SZ is a simple integer constant representing the word size.
|
| 497 |
|
|
* in bits. We assume byte addressibility, where a byte has 8 bits.
|
| 498 |
|
|
* We also assume CPP_WORD_SZ is either 32 or 64.
|
| 499 |
|
|
* (We care about the length of pointers, not hardware
|
| 500 |
|
|
* bus widths. Thus a 64 bit processor with a C compiler that uses
|
| 501 |
|
|
* 32 bit pointers should use CPP_WORD_SZ of 32, not 64. Default is 32.)
|
| 502 |
|
|
*
|
| 503 |
|
|
* MACH_TYPE is a string representation of the machine type.
|
| 504 |
|
|
* OS_TYPE is analogous for the OS.
|
| 505 |
|
|
*
|
| 506 |
|
|
* ALIGNMENT is the largest N, such that
|
| 507 |
|
|
* all pointer are guaranteed to be aligned on N byte boundaries.
|
| 508 |
|
|
* defining it to be 1 will always work, but perform poorly.
|
| 509 |
|
|
*
|
| 510 |
|
|
* DATASTART is the beginning of the data segment.
|
| 511 |
|
|
* On some platforms SEARCH_FOR_DATA_START is defined.
|
| 512 |
|
|
* SEARCH_FOR_DATASTART will cause GC_data_start to
|
| 513 |
|
|
* be set to an address determined by accessing data backwards from _end
|
| 514 |
|
|
* until an unmapped page is found. DATASTART will be defined to be
|
| 515 |
|
|
* GC_data_start.
|
| 516 |
|
|
* On UNIX-like systems, the collector will scan the area between DATASTART
|
| 517 |
|
|
* and DATAEND for root pointers.
|
| 518 |
|
|
*
|
| 519 |
|
|
* DATAEND, if not `end' where `end' is defined as ``extern int end[];''.
|
| 520 |
|
|
* RTH suggests gaining access to linker script synth'd values with
|
| 521 |
|
|
* this idiom instead of `&end' where `end' is defined as ``extern int end;'' .
|
| 522 |
|
|
* Otherwise, ``GCC will assume these are in .sdata/.sbss'' and it will, e.g.,
|
| 523 |
|
|
* cause failures on alpha*-*-* with ``-msmall-data or -fpic'' or mips-*-*
|
| 524 |
|
|
* without any special options.
|
| 525 |
|
|
*
|
| 526 |
|
|
* ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice
|
| 527 |
|
|
* the pointer size.
|
| 528 |
|
|
*
|
| 529 |
|
|
* STACKBOTTOM is the cool end of the stack, which is usually the
|
| 530 |
|
|
* highest address in the stack.
|
| 531 |
|
|
* Under PCR or OS/2, we have other ways of finding thread stacks.
|
| 532 |
|
|
* For each machine, the following should:
|
| 533 |
|
|
* 1) define STACK_GROWS_UP if the stack grows toward higher addresses, and
|
| 534 |
|
|
* 2) define exactly one of
|
| 535 |
|
|
* STACKBOTTOM (should be defined to be an expression)
|
| 536 |
|
|
* LINUX_STACKBOTTOM
|
| 537 |
|
|
* HEURISTIC1
|
| 538 |
|
|
* HEURISTIC2
|
| 539 |
|
|
* If STACKBOTTOM is defined, then it's value will be used directly as the
|
| 540 |
|
|
* stack base. If LINUX_STACKBOTTOM is defined, then it will be determined
|
| 541 |
|
|
* with a method appropriate for most Linux systems. Currently we look
|
| 542 |
|
|
* first for __libc_stack_end, and if that fails read it from /proc.
|
| 543 |
|
|
* If either of the last two macros are defined, then STACKBOTTOM is computed
|
| 544 |
|
|
* during collector startup using one of the following two heuristics:
|
| 545 |
|
|
* HEURISTIC1: Take an address inside GC_init's frame, and round it up to
|
| 546 |
|
|
* the next multiple of STACK_GRAN.
|
| 547 |
|
|
* HEURISTIC2: Take an address inside GC_init's frame, increment it repeatedly
|
| 548 |
|
|
* in small steps (decrement if STACK_GROWS_UP), and read the value
|
| 549 |
|
|
* at each location. Remember the value when the first
|
| 550 |
|
|
* Segmentation violation or Bus error is signalled. Round that
|
| 551 |
|
|
* to the nearest plausible page boundary, and use that instead
|
| 552 |
|
|
* of STACKBOTTOM.
|
| 553 |
|
|
*
|
| 554 |
|
|
* Gustavo Rodriguez-Rivera points out that on most (all?) Unix machines,
|
| 555 |
|
|
* the value of environ is a pointer that can serve as STACKBOTTOM.
|
| 556 |
|
|
* I expect that HEURISTIC2 can be replaced by this approach, which
|
| 557 |
|
|
* interferes far less with debugging. However it has the disadvantage
|
| 558 |
|
|
* that it's confused by a putenv call before the collector is initialized.
|
| 559 |
|
|
* This could be dealt with by intercepting putenv ...
|
| 560 |
|
|
*
|
| 561 |
|
|
* If no expression for STACKBOTTOM can be found, and neither of the above
|
| 562 |
|
|
* heuristics are usable, the collector can still be used with all of the above
|
| 563 |
|
|
* undefined, provided one of the following is done:
|
| 564 |
|
|
* 1) GC_mark_roots can be changed to somehow mark from the correct stack(s)
|
| 565 |
|
|
* without reference to STACKBOTTOM. This is appropriate for use in
|
| 566 |
|
|
* conjunction with thread packages, since there will be multiple stacks.
|
| 567 |
|
|
* (Allocating thread stacks in the heap, and treating them as ordinary
|
| 568 |
|
|
* heap data objects is also possible as a last resort. However, this is
|
| 569 |
|
|
* likely to introduce significant amounts of excess storage retention
|
| 570 |
|
|
* unless the dead parts of the thread stacks are periodically cleared.)
|
| 571 |
|
|
* 2) Client code may set GC_stackbottom before calling any GC_ routines.
|
| 572 |
|
|
* If the author of the client code controls the main program, this is
|
| 573 |
|
|
* easily accomplished by introducing a new main program, setting
|
| 574 |
|
|
* GC_stackbottom to the address of a local variable, and then calling
|
| 575 |
|
|
* the original main program. The new main program would read something
|
| 576 |
|
|
* like:
|
| 577 |
|
|
*
|
| 578 |
|
|
* # include "gc_private.h"
|
| 579 |
|
|
*
|
| 580 |
|
|
* main(argc, argv, envp)
|
| 581 |
|
|
* int argc;
|
| 582 |
|
|
* char **argv, **envp;
|
| 583 |
|
|
* {
|
| 584 |
|
|
* int dummy;
|
| 585 |
|
|
*
|
| 586 |
|
|
* GC_stackbottom = (ptr_t)(&dummy);
|
| 587 |
|
|
* return(real_main(argc, argv, envp));
|
| 588 |
|
|
* }
|
| 589 |
|
|
*
|
| 590 |
|
|
*
|
| 591 |
|
|
* Each architecture may also define the style of virtual dirty bit
|
| 592 |
|
|
* implementation to be used:
|
| 593 |
|
|
* MPROTECT_VDB: Write protect the heap and catch faults.
|
| 594 |
|
|
* PROC_VDB: Use the SVR4 /proc primitives to read dirty bits.
|
| 595 |
|
|
*
|
| 596 |
|
|
* An architecture may define DYNAMIC_LOADING if dynamic_load.c
|
| 597 |
|
|
* defined GC_register_dynamic_libraries() for the architecture.
|
| 598 |
|
|
*
|
| 599 |
|
|
* An architecture may define PREFETCH(x) to preload the cache with *x.
|
| 600 |
|
|
* This defaults to a no-op.
|
| 601 |
|
|
*
|
| 602 |
|
|
* PREFETCH_FOR_WRITE(x) is used if *x is about to be written.
|
| 603 |
|
|
*
|
| 604 |
|
|
* An architecture may also define CLEAR_DOUBLE(x) to be a fast way to
|
| 605 |
|
|
* clear the two words at GC_malloc-aligned address x. By default,
|
| 606 |
|
|
* word stores of 0 are used instead.
|
| 607 |
|
|
*
|
| 608 |
|
|
* HEAP_START may be defined as the initial address hint for mmap-based
|
| 609 |
|
|
* allocation.
|
| 610 |
|
|
*/
|
| 611 |
|
|
|
| 612 |
|
|
/* If we are using a recent version of gcc, we can use __builtin_unwind_init()
|
| 613 |
|
|
* to push the relevant registers onto the stack. This generally makes
|
| 614 |
|
|
* USE_GENERIC_PUSH_REGS the preferred approach for marking from registers.
|
| 615 |
|
|
*/
|
| 616 |
|
|
# if defined(__GNUC__) && ((__GNUC__ >= 3) || \
|
| 617 |
|
|
(__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) \
|
| 618 |
|
|
&& !defined(__INTEL_COMPILER)
|
| 619 |
|
|
# define HAVE_BUILTIN_UNWIND_INIT
|
| 620 |
|
|
# endif
|
| 621 |
|
|
|
| 622 |
|
|
# define STACK_GRAN 0x1000000
|
| 623 |
|
|
# ifdef M68K
|
| 624 |
|
|
# define MACH_TYPE "M68K"
|
| 625 |
|
|
# define ALIGNMENT 2
|
| 626 |
|
|
# ifdef OPENBSD
|
| 627 |
|
|
# define OS_TYPE "OPENBSD"
|
| 628 |
|
|
# define HEURISTIC2
|
| 629 |
|
|
# ifdef __ELF__
|
| 630 |
|
|
# define DATASTART GC_data_start
|
| 631 |
|
|
# define DYNAMIC_LOADING
|
| 632 |
|
|
# else
|
| 633 |
|
|
extern char etext[];
|
| 634 |
|
|
# define DATASTART ((ptr_t)(etext))
|
| 635 |
|
|
# endif
|
| 636 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 637 |
|
|
# endif
|
| 638 |
|
|
# ifdef NETBSD
|
| 639 |
|
|
# define OS_TYPE "NETBSD"
|
| 640 |
|
|
# define HEURISTIC2
|
| 641 |
|
|
# ifdef __ELF__
|
| 642 |
|
|
# define DATASTART GC_data_start
|
| 643 |
|
|
# define DYNAMIC_LOADING
|
| 644 |
|
|
# else
|
| 645 |
|
|
extern char etext[];
|
| 646 |
|
|
# define DATASTART ((ptr_t)(etext))
|
| 647 |
|
|
# endif
|
| 648 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 649 |
|
|
# endif
|
| 650 |
|
|
# ifdef LINUX
|
| 651 |
|
|
# define OS_TYPE "LINUX"
|
| 652 |
|
|
# define STACKBOTTOM ((ptr_t)0xf0000000)
|
| 653 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 654 |
|
|
# define USE_MMAP
|
| 655 |
|
|
/* We never got around to the assembly version. */
|
| 656 |
|
|
/* # define MPROTECT_VDB - Reported to not work 9/17/01 */
|
| 657 |
|
|
# ifdef __ELF__
|
| 658 |
|
|
# define DYNAMIC_LOADING
|
| 659 |
|
|
# include <features.h>
|
| 660 |
|
|
# if defined(__GLIBC__)&& __GLIBC__>=2
|
| 661 |
|
|
# define SEARCH_FOR_DATA_START
|
| 662 |
|
|
# else /* !GLIBC2 */
|
| 663 |
|
|
extern char **__environ;
|
| 664 |
|
|
# define DATASTART ((ptr_t)(&__environ))
|
| 665 |
|
|
/* hideous kludge: __environ is the first */
|
| 666 |
|
|
/* word in crt0.o, and delimits the start */
|
| 667 |
|
|
/* of the data segment, no matter which */
|
| 668 |
|
|
/* ld options were passed through. */
|
| 669 |
|
|
/* We could use _etext instead, but that */
|
| 670 |
|
|
/* would include .rodata, which may */
|
| 671 |
|
|
/* contain large read-only data tables */
|
| 672 |
|
|
/* that we'd rather not scan. */
|
| 673 |
|
|
# endif /* !GLIBC2 */
|
| 674 |
|
|
extern int _end[];
|
| 675 |
|
|
# define DATAEND (_end)
|
| 676 |
|
|
# else
|
| 677 |
|
|
extern int etext[];
|
| 678 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
| 679 |
|
|
# endif
|
| 680 |
|
|
# endif
|
| 681 |
|
|
# ifdef SUNOS4
|
| 682 |
|
|
# define OS_TYPE "SUNOS4"
|
| 683 |
|
|
extern char etext[];
|
| 684 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0x1ffff) & ~0x1ffff))
|
| 685 |
|
|
# define HEURISTIC1 /* differs */
|
| 686 |
|
|
# define DYNAMIC_LOADING
|
| 687 |
|
|
# endif
|
| 688 |
|
|
# ifdef HP
|
| 689 |
|
|
# define OS_TYPE "HP"
|
| 690 |
|
|
extern char etext[];
|
| 691 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
| 692 |
|
|
# define STACKBOTTOM ((ptr_t) 0xffeffffc)
|
| 693 |
|
|
/* empirically determined. seems to work. */
|
| 694 |
|
|
# include <unistd.h>
|
| 695 |
|
|
# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
|
| 696 |
|
|
# endif
|
| 697 |
|
|
# ifdef SYSV
|
| 698 |
|
|
# define OS_TYPE "SYSV"
|
| 699 |
|
|
extern etext[];
|
| 700 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \
|
| 701 |
|
|
& ~0x3fffff) \
|
| 702 |
|
|
+((word)etext & 0x1fff))
|
| 703 |
|
|
/* This only works for shared-text binaries with magic number 0413.
|
| 704 |
|
|
The other sorts of SysV binaries put the data at the end of the text,
|
| 705 |
|
|
in which case the default of etext would work. Unfortunately,
|
| 706 |
|
|
handling both would require having the magic-number available.
|
| 707 |
|
|
-- Parag
|
| 708 |
|
|
*/
|
| 709 |
|
|
# define STACKBOTTOM ((ptr_t)0xFFFFFFFE)
|
| 710 |
|
|
/* The stack starts at the top of memory, but */
|
| 711 |
|
|
/* 0x0 cannot be used as setjump_test complains */
|
| 712 |
|
|
/* that the stack direction is incorrect. Two */
|
| 713 |
|
|
/* bytes down from 0x0 should be safe enough. */
|
| 714 |
|
|
/* --Parag */
|
| 715 |
|
|
# include <sys/mmu.h>
|
| 716 |
|
|
# define GETPAGESIZE() PAGESIZE /* Is this still right? */
|
| 717 |
|
|
# endif
|
| 718 |
|
|
# ifdef AMIGA
|
| 719 |
|
|
# define OS_TYPE "AMIGA"
|
| 720 |
|
|
/* STACKBOTTOM and DATASTART handled specially */
|
| 721 |
|
|
/* in os_dep.c */
|
| 722 |
|
|
# define DATAEND /* not needed */
|
| 723 |
|
|
# define GETPAGESIZE() 4096
|
| 724 |
|
|
# endif
|
| 725 |
|
|
# ifdef MACOS
|
| 726 |
|
|
# ifndef __LOWMEM__
|
| 727 |
|
|
# include <LowMem.h>
|
| 728 |
|
|
# endif
|
| 729 |
|
|
# define OS_TYPE "MACOS"
|
| 730 |
|
|
/* see os_dep.c for details of global data segments. */
|
| 731 |
|
|
# define STACKBOTTOM ((ptr_t) LMGetCurStackBase())
|
| 732 |
|
|
# define DATAEND /* not needed */
|
| 733 |
|
|
# define GETPAGESIZE() 4096
|
| 734 |
|
|
# endif
|
| 735 |
|
|
# ifdef NEXT
|
| 736 |
|
|
# define OS_TYPE "NEXT"
|
| 737 |
|
|
# define DATASTART ((ptr_t) get_etext())
|
| 738 |
|
|
# define STACKBOTTOM ((ptr_t) 0x4000000)
|
| 739 |
|
|
# define DATAEND /* not needed */
|
| 740 |
|
|
# endif
|
| 741 |
|
|
# endif
|
| 742 |
|
|
|
| 743 |
|
|
# ifdef POWERPC
|
| 744 |
|
|
# define MACH_TYPE "POWERPC"
|
| 745 |
|
|
# ifdef MACOS
|
| 746 |
|
|
# define ALIGNMENT 2 /* Still necessary? Could it be 4? */
|
| 747 |
|
|
# ifndef __LOWMEM__
|
| 748 |
|
|
# include <LowMem.h>
|
| 749 |
|
|
# endif
|
| 750 |
|
|
# define OS_TYPE "MACOS"
|
| 751 |
|
|
/* see os_dep.c for details of global data segments. */
|
| 752 |
|
|
# define STACKBOTTOM ((ptr_t) LMGetCurStackBase())
|
| 753 |
|
|
# define DATAEND /* not needed */
|
| 754 |
|
|
# endif
|
| 755 |
|
|
# ifdef LINUX
|
| 756 |
|
|
# if (defined (powerpc64) || defined(__powerpc64__))
|
| 757 |
|
|
# define ALIGNMENT 8
|
| 758 |
|
|
# define CPP_WORDSZ 64
|
| 759 |
|
|
# define HBLKSIZE 4096
|
| 760 |
|
|
# else
|
| 761 |
|
|
# define ALIGNMENT 4
|
| 762 |
|
|
# endif
|
| 763 |
|
|
# define OS_TYPE "LINUX"
|
| 764 |
|
|
/* HEURISTIC1 has been reliably reported to fail for a 32-bit */
|
| 765 |
|
|
/* executable on a 64 bit kernel. */
|
| 766 |
|
|
# define LINUX_STACKBOTTOM
|
| 767 |
|
|
# define DYNAMIC_LOADING
|
| 768 |
|
|
# define SEARCH_FOR_DATA_START
|
| 769 |
|
|
extern int _end[];
|
| 770 |
|
|
# define DATAEND (_end)
|
| 771 |
|
|
# endif
|
| 772 |
|
|
# ifdef DARWIN
|
| 773 |
|
|
# if (defined (__ppc64__))
|
| 774 |
|
|
# define ALIGNMENT 8
|
| 775 |
|
|
# define CPP_WORDSZ 64
|
| 776 |
|
|
# else
|
| 777 |
|
|
# define ALIGNMENT 4
|
| 778 |
|
|
# endif
|
| 779 |
|
|
# define OS_TYPE "DARWIN"
|
| 780 |
|
|
# define DYNAMIC_LOADING
|
| 781 |
|
|
/* XXX: see get_end(3), get_etext() and get_end() should not be used.
|
| 782 |
|
|
These aren't used when dyld support is enabled (it is by default) */
|
| 783 |
|
|
# define DATASTART ((ptr_t) get_etext())
|
| 784 |
|
|
# define DATAEND ((ptr_t) get_end())
|
| 785 |
|
|
# define STACKBOTTOM ((ptr_t) 0xc0000000)
|
| 786 |
|
|
# define USE_MMAP
|
| 787 |
|
|
# define USE_MMAP_ANON
|
| 788 |
|
|
# define USE_ASM_PUSH_REGS
|
| 789 |
|
|
/* This is potentially buggy. It needs more testing. See the comments in
|
| 790 |
|
|
os_dep.c */
|
| 791 |
|
|
# define MPROTECT_VDB
|
| 792 |
|
|
# include <unistd.h>
|
| 793 |
|
|
# define GETPAGESIZE() getpagesize()
|
| 794 |
|
|
# if defined(USE_PPC_PREFETCH) && defined(__GNUC__)
|
| 795 |
|
|
/* The performance impact of prefetches is untested */
|
| 796 |
|
|
# define PREFETCH(x) \
|
| 797 |
|
|
__asm__ __volatile__ ("dcbt 0,%0" : : "r" ((const void *) (x)))
|
| 798 |
|
|
# define PREFETCH_FOR_WRITE(x) \
|
| 799 |
|
|
__asm__ __volatile__ ("dcbtst 0,%0" : : "r" ((const void *) (x)))
|
| 800 |
|
|
# endif
|
| 801 |
|
|
/* There seems to be some issues with trylock hanging on darwin. This
|
| 802 |
|
|
should be looked into some more */
|
| 803 |
|
|
# define NO_PTHREAD_TRYLOCK
|
| 804 |
|
|
# endif
|
| 805 |
|
|
# ifdef FREEBSD
|
| 806 |
|
|
# define ALIGNMENT 4
|
| 807 |
|
|
# define OS_TYPE "FREEBSD"
|
| 808 |
|
|
# ifndef GC_FREEBSD_THREADS
|
| 809 |
|
|
# define MPROTECT_VDB
|
| 810 |
|
|
# endif
|
| 811 |
|
|
# define SIG_SUSPEND SIGUSR1
|
| 812 |
|
|
# define SIG_THR_RESTART SIGUSR2
|
| 813 |
|
|
# define FREEBSD_STACKBOTTOM
|
| 814 |
|
|
# ifdef __ELF__
|
| 815 |
|
|
# define DYNAMIC_LOADING
|
| 816 |
|
|
# endif
|
| 817 |
|
|
extern char etext[];
|
| 818 |
|
|
extern char * GC_FreeBSDGetDataStart();
|
| 819 |
|
|
# define DATASTART GC_FreeBSDGetDataStart(0x1000, &etext)
|
| 820 |
|
|
# endif
|
| 821 |
|
|
# ifdef NETBSD
|
| 822 |
|
|
# define ALIGNMENT 4
|
| 823 |
|
|
# define OS_TYPE "NETBSD"
|
| 824 |
|
|
# define HEURISTIC2
|
| 825 |
|
|
extern char etext[];
|
| 826 |
|
|
# define DATASTART GC_data_start
|
| 827 |
|
|
# define DYNAMIC_LOADING
|
| 828 |
|
|
# endif
|
| 829 |
|
|
# ifdef NOSYS
|
| 830 |
|
|
# define ALIGNMENT 4
|
| 831 |
|
|
# define OS_TYPE "NOSYS"
|
| 832 |
|
|
extern void __end[], __dso_handle[];
|
| 833 |
|
|
# define DATASTART (__dso_handle) /* OK, that's ugly. */
|
| 834 |
|
|
# define DATAEND (__end)
|
| 835 |
|
|
/* Stack starts at 0xE0000000 for the simulator. */
|
| 836 |
|
|
# undef STACK_GRAN
|
| 837 |
|
|
# define STACK_GRAN 0x10000000
|
| 838 |
|
|
# define HEURISTIC1
|
| 839 |
|
|
# endif
|
| 840 |
|
|
# endif
|
| 841 |
|
|
|
| 842 |
|
|
# ifdef VAX
|
| 843 |
|
|
# define MACH_TYPE "VAX"
|
| 844 |
|
|
# define ALIGNMENT 4 /* Pointers are longword aligned by 4.2 C compiler */
|
| 845 |
|
|
extern char etext[];
|
| 846 |
|
|
# define DATASTART ((ptr_t)(etext))
|
| 847 |
|
|
# ifdef BSD
|
| 848 |
|
|
# define OS_TYPE "BSD"
|
| 849 |
|
|
# define HEURISTIC1
|
| 850 |
|
|
/* HEURISTIC2 may be OK, but it's hard to test. */
|
| 851 |
|
|
# endif
|
| 852 |
|
|
# ifdef ULTRIX
|
| 853 |
|
|
# define OS_TYPE "ULTRIX"
|
| 854 |
|
|
# define STACKBOTTOM ((ptr_t) 0x7fffc800)
|
| 855 |
|
|
# endif
|
| 856 |
|
|
# endif
|
| 857 |
|
|
|
| 858 |
|
|
# ifdef RT
|
| 859 |
|
|
# define MACH_TYPE "RT"
|
| 860 |
|
|
# define ALIGNMENT 4
|
| 861 |
|
|
# define DATASTART ((ptr_t) 0x10000000)
|
| 862 |
|
|
# define STACKBOTTOM ((ptr_t) 0x1fffd800)
|
| 863 |
|
|
# endif
|
| 864 |
|
|
|
| 865 |
|
|
# ifdef SPARC
|
| 866 |
|
|
# define MACH_TYPE "SPARC"
|
| 867 |
|
|
# if defined(__arch64__) || defined(__sparcv9)
|
| 868 |
|
|
# define ALIGNMENT 8
|
| 869 |
|
|
# define CPP_WORDSZ 64
|
| 870 |
|
|
# define ELF_CLASS ELFCLASS64
|
| 871 |
|
|
# else
|
| 872 |
|
|
# define ALIGNMENT 4 /* Required by hardware */
|
| 873 |
|
|
# define CPP_WORDSZ 32
|
| 874 |
|
|
# endif
|
| 875 |
|
|
# define ALIGN_DOUBLE
|
| 876 |
|
|
# ifdef SUNOS5
|
| 877 |
|
|
# define OS_TYPE "SUNOS5"
|
| 878 |
|
|
extern int _etext[];
|
| 879 |
|
|
extern int _end[];
|
| 880 |
|
|
extern ptr_t GC_SysVGetDataStart();
|
| 881 |
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, _etext)
|
| 882 |
|
|
# define DATAEND (_end)
|
| 883 |
|
|
# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC)
|
| 884 |
|
|
# define USE_MMAP
|
| 885 |
|
|
/* Otherwise we now use calloc. Mmap may result in the */
|
| 886 |
|
|
/* heap interleaved with thread stacks, which can result in */
|
| 887 |
|
|
/* excessive blacklisting. Sbrk is unusable since it */
|
| 888 |
|
|
/* doesn't interact correctly with the system malloc. */
|
| 889 |
|
|
# endif
|
| 890 |
|
|
# ifdef USE_MMAP
|
| 891 |
|
|
# define HEAP_START (ptr_t)0x40000000
|
| 892 |
|
|
# else
|
| 893 |
|
|
# define HEAP_START DATAEND
|
| 894 |
|
|
# endif
|
| 895 |
|
|
# define PROC_VDB
|
| 896 |
|
|
/* HEURISTIC1 reportedly no longer works under 2.7. */
|
| 897 |
|
|
/* HEURISTIC2 probably works, but this appears to be preferable. */
|
| 898 |
|
|
/* Apparently USRSTACK is defined to be USERLIMIT, but in some */
|
| 899 |
|
|
/* installations that's undefined. We work around this with a */
|
| 900 |
|
|
/* gross hack: */
|
| 901 |
|
|
# include <sys/vmparam.h>
|
| 902 |
|
|
# ifdef USERLIMIT
|
| 903 |
|
|
/* This should work everywhere, but doesn't. */
|
| 904 |
|
|
# define STACKBOTTOM USRSTACK
|
| 905 |
|
|
# else
|
| 906 |
|
|
# define HEURISTIC2
|
| 907 |
|
|
# endif
|
| 908 |
|
|
# include <unistd.h>
|
| 909 |
|
|
# define GETPAGESIZE() sysconf(_SC_PAGESIZE)
|
| 910 |
|
|
/* getpagesize() appeared to be missing from at least one */
|
| 911 |
|
|
/* Solaris 5.4 installation. Weird. */
|
| 912 |
|
|
# define DYNAMIC_LOADING
|
| 913 |
|
|
# endif
|
| 914 |
|
|
# ifdef SUNOS4
|
| 915 |
|
|
# define OS_TYPE "SUNOS4"
|
| 916 |
|
|
/* [If you have a weak stomach, don't read this.] */
|
| 917 |
|
|
/* We would like to use: */
|
| 918 |
|
|
/* # define DATASTART ((ptr_t)((((word) (etext)) + 0x1fff) & ~0x1fff)) */
|
| 919 |
|
|
/* This fails occasionally, due to an ancient, but very */
|
| 920 |
|
|
/* persistent ld bug. etext is set 32 bytes too high. */
|
| 921 |
|
|
/* We instead read the text segment size from the a.out */
|
| 922 |
|
|
/* header, which happens to be mapped into our address space */
|
| 923 |
|
|
/* at the start of the text segment. The detective work here */
|
| 924 |
|
|
/* was done by Robert Ehrlich, Manuel Serrano, and Bernard */
|
| 925 |
|
|
/* Serpette of INRIA. */
|
| 926 |
|
|
/* This assumes ZMAGIC, i.e. demand-loadable executables. */
|
| 927 |
|
|
# define TEXTSTART 0x2000
|
| 928 |
|
|
# define DATASTART ((ptr_t)(*(int *)(TEXTSTART+0x4)+TEXTSTART))
|
| 929 |
|
|
# define MPROTECT_VDB
|
| 930 |
|
|
# define HEURISTIC1
|
| 931 |
|
|
# define DYNAMIC_LOADING
|
| 932 |
|
|
# endif
|
| 933 |
|
|
# ifdef DRSNX
|
| 934 |
|
|
# define OS_TYPE "DRSNX"
|
| 935 |
|
|
extern ptr_t GC_SysVGetDataStart();
|
| 936 |
|
|
extern int etext[];
|
| 937 |
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, etext)
|
| 938 |
|
|
# define MPROTECT_VDB
|
| 939 |
|
|
# define STACKBOTTOM ((ptr_t) 0xdfff0000)
|
| 940 |
|
|
# define DYNAMIC_LOADING
|
| 941 |
|
|
# endif
|
| 942 |
|
|
# ifdef LINUX
|
| 943 |
|
|
# define OS_TYPE "LINUX"
|
| 944 |
|
|
# ifdef __ELF__
|
| 945 |
|
|
# define DYNAMIC_LOADING
|
| 946 |
|
|
# else
|
| 947 |
|
|
Linux Sparc/a.out not supported
|
| 948 |
|
|
# endif
|
| 949 |
|
|
extern int _end[];
|
| 950 |
|
|
extern int _etext[];
|
| 951 |
|
|
# define DATAEND (_end)
|
| 952 |
|
|
# define SVR4
|
| 953 |
|
|
extern ptr_t GC_SysVGetDataStart();
|
| 954 |
|
|
# ifdef __arch64__
|
| 955 |
|
|
# define DATASTART GC_SysVGetDataStart(0x100000, _etext)
|
| 956 |
|
|
# else
|
| 957 |
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, _etext)
|
| 958 |
|
|
# endif
|
| 959 |
|
|
# define LINUX_STACKBOTTOM
|
| 960 |
|
|
# endif
|
| 961 |
|
|
# ifdef OPENBSD
|
| 962 |
|
|
# define OS_TYPE "OPENBSD"
|
| 963 |
|
|
# define STACKBOTTOM ((ptr_t) 0xf8000000)
|
| 964 |
|
|
extern int etext[];
|
| 965 |
|
|
# define DATASTART ((ptr_t)(etext))
|
| 966 |
|
|
# endif
|
| 967 |
|
|
# ifdef NETBSD
|
| 968 |
|
|
# define OS_TYPE "NETBSD"
|
| 969 |
|
|
# define HEURISTIC2
|
| 970 |
|
|
# ifdef __ELF__
|
| 971 |
|
|
# define DATASTART GC_data_start
|
| 972 |
|
|
# define DYNAMIC_LOADING
|
| 973 |
|
|
# else
|
| 974 |
|
|
extern char etext[];
|
| 975 |
|
|
# define DATASTART ((ptr_t)(etext))
|
| 976 |
|
|
# endif
|
| 977 |
|
|
# endif
|
| 978 |
|
|
# endif
|
| 979 |
|
|
|
| 980 |
|
|
# ifdef I386
|
| 981 |
|
|
# define MACH_TYPE "I386"
|
| 982 |
|
|
# if defined(__LP64__) || defined(_WIN64)
|
| 983 |
|
|
# define CPP_WORDSZ 64
|
| 984 |
|
|
# define ALIGNMENT 8
|
| 985 |
|
|
# else
|
| 986 |
|
|
# define CPP_WORDSZ 32
|
| 987 |
|
|
# define ALIGNMENT 4
|
| 988 |
|
|
/* Appears to hold for all "32 bit" compilers */
|
| 989 |
|
|
/* except Borland. The -a4 option fixes */
|
| 990 |
|
|
/* Borland. */
|
| 991 |
|
|
/* Ivan Demakov: For Watcom the option is -zp4. */
|
| 992 |
|
|
# endif
|
| 993 |
|
|
# ifndef SMALL_CONFIG
|
| 994 |
|
|
# define ALIGN_DOUBLE /* Not strictly necessary, but may give speed */
|
| 995 |
|
|
/* improvement on Pentiums. */
|
| 996 |
|
|
# endif
|
| 997 |
|
|
# ifdef HAVE_BUILTIN_UNWIND_INIT
|
| 998 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 999 |
|
|
# endif
|
| 1000 |
|
|
# ifdef SEQUENT
|
| 1001 |
|
|
# define OS_TYPE "SEQUENT"
|
| 1002 |
|
|
extern int etext[];
|
| 1003 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
| 1004 |
|
|
# define STACKBOTTOM ((ptr_t) 0x3ffff000)
|
| 1005 |
|
|
# endif
|
| 1006 |
|
|
# ifdef BEOS
|
| 1007 |
|
|
# define OS_TYPE "BEOS"
|
| 1008 |
|
|
# include <OS.h>
|
| 1009 |
|
|
# define GETPAGESIZE() B_PAGE_SIZE
|
| 1010 |
|
|
extern int etext[];
|
| 1011 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
| 1012 |
|
|
# endif
|
| 1013 |
|
|
# ifdef SUNOS5
|
| 1014 |
|
|
# define OS_TYPE "SUNOS5"
|
| 1015 |
|
|
extern int _etext[], _end[];
|
| 1016 |
|
|
extern ptr_t GC_SysVGetDataStart();
|
| 1017 |
|
|
# define DATASTART GC_SysVGetDataStart(0x1000, _etext)
|
| 1018 |
|
|
# define DATAEND (_end)
|
| 1019 |
|
|
/* # define STACKBOTTOM ((ptr_t)(_start)) worked through 2.7, */
|
| 1020 |
|
|
/* but reportedly breaks under 2.8. It appears that the stack */
|
| 1021 |
|
|
/* base is a property of the executable, so this should not break */
|
| 1022 |
|
|
/* old executables. */
|
| 1023 |
|
|
/* HEURISTIC2 probably works, but this appears to be preferable. */
|
| 1024 |
|
|
# include <sys/vm.h>
|
| 1025 |
|
|
# define STACKBOTTOM USRSTACK
|
| 1026 |
|
|
/* At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */
|
| 1027 |
|
|
/* It appears to be fixed in 2.8 and 2.9. */
|
| 1028 |
|
|
# ifdef SOLARIS25_PROC_VDB_BUG_FIXED
|
| 1029 |
|
|
# define PROC_VDB
|
| 1030 |
|
|
# endif
|
| 1031 |
|
|
# define DYNAMIC_LOADING
|
| 1032 |
|
|
# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC)
|
| 1033 |
|
|
# define USE_MMAP
|
| 1034 |
|
|
/* Otherwise we now use calloc. Mmap may result in the */
|
| 1035 |
|
|
/* heap interleaved with thread stacks, which can result in */
|
| 1036 |
|
|
/* excessive blacklisting. Sbrk is unusable since it */
|
| 1037 |
|
|
/* doesn't interact correctly with the system malloc. */
|
| 1038 |
|
|
# endif
|
| 1039 |
|
|
# ifdef USE_MMAP
|
| 1040 |
|
|
# define HEAP_START (ptr_t)0x40000000
|
| 1041 |
|
|
# else
|
| 1042 |
|
|
# define HEAP_START DATAEND
|
| 1043 |
|
|
# endif
|
| 1044 |
|
|
# endif
|
| 1045 |
|
|
# ifdef SCO
|
| 1046 |
|
|
# define OS_TYPE "SCO"
|
| 1047 |
|
|
extern int etext[];
|
| 1048 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \
|
| 1049 |
|
|
& ~0x3fffff) \
|
| 1050 |
|
|
+((word)etext & 0xfff))
|
| 1051 |
|
|
# define STACKBOTTOM ((ptr_t) 0x7ffffffc)
|
| 1052 |
|
|
# endif
|
| 1053 |
|
|
# ifdef SCO_ELF
|
| 1054 |
|
|
# define OS_TYPE "SCO_ELF"
|
| 1055 |
|
|
extern int etext[];
|
| 1056 |
|
|
# define DATASTART ((ptr_t)(etext))
|
| 1057 |
|
|
# define STACKBOTTOM ((ptr_t) 0x08048000)
|
| 1058 |
|
|
# define DYNAMIC_LOADING
|
| 1059 |
|
|
# define ELF_CLASS ELFCLASS32
|
| 1060 |
|
|
# endif
|
| 1061 |
|
|
# ifdef DGUX
|
| 1062 |
|
|
# define OS_TYPE "DGUX"
|
| 1063 |
|
|
extern int _etext, _end;
|
| 1064 |
|
|
extern ptr_t GC_SysVGetDataStart();
|
| 1065 |
|
|
# define DATASTART GC_SysVGetDataStart(0x1000, &_etext)
|
| 1066 |
|
|
# define DATAEND (&_end)
|
| 1067 |
|
|
# define STACK_GROWS_DOWN
|
| 1068 |
|
|
# define HEURISTIC2
|
| 1069 |
|
|
# include <unistd.h>
|
| 1070 |
|
|
# define GETPAGESIZE() sysconf(_SC_PAGESIZE)
|
| 1071 |
|
|
# define DYNAMIC_LOADING
|
| 1072 |
|
|
# ifndef USE_MMAP
|
| 1073 |
|
|
# define USE_MMAP
|
| 1074 |
|
|
# endif /* USE_MMAP */
|
| 1075 |
|
|
# define MAP_FAILED (void *) -1
|
| 1076 |
|
|
# ifdef USE_MMAP
|
| 1077 |
|
|
# define HEAP_START (ptr_t)0x40000000
|
| 1078 |
|
|
# else /* USE_MMAP */
|
| 1079 |
|
|
# define HEAP_START DATAEND
|
| 1080 |
|
|
# endif /* USE_MMAP */
|
| 1081 |
|
|
# endif /* DGUX */
|
| 1082 |
|
|
|
| 1083 |
|
|
# ifdef LINUX
|
| 1084 |
|
|
# ifndef __GNUC__
|
| 1085 |
|
|
/* The Intel compiler doesn't like inline assembly */
|
| 1086 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1087 |
|
|
# endif
|
| 1088 |
|
|
# define OS_TYPE "LINUX"
|
| 1089 |
|
|
# define LINUX_STACKBOTTOM
|
| 1090 |
|
|
# if 0
|
| 1091 |
|
|
# define HEURISTIC1
|
| 1092 |
|
|
# undef STACK_GRAN
|
| 1093 |
|
|
# define STACK_GRAN 0x10000000
|
| 1094 |
|
|
/* STACKBOTTOM is usually 0xc0000000, but this changes with */
|
| 1095 |
|
|
/* different kernel configurations. In particular, systems */
|
| 1096 |
|
|
/* with 2GB physical memory will usually move the user */
|
| 1097 |
|
|
/* address space limit, and hence initial SP to 0x80000000. */
|
| 1098 |
|
|
# endif
|
| 1099 |
|
|
# if !defined(GC_LINUX_THREADS) || !defined(REDIRECT_MALLOC)
|
| 1100 |
|
|
# define MPROTECT_VDB
|
| 1101 |
|
|
# else
|
| 1102 |
|
|
/* We seem to get random errors in incremental mode, */
|
| 1103 |
|
|
/* possibly because Linux threads is itself a malloc client */
|
| 1104 |
|
|
/* and can't deal with the signals. */
|
| 1105 |
|
|
# endif
|
| 1106 |
|
|
# define HEAP_START (ptr_t)0x1000
|
| 1107 |
|
|
/* This encourages mmap to give us low addresses, */
|
| 1108 |
|
|
/* thus allowing the heap to grow to ~3GB */
|
| 1109 |
|
|
# ifdef __ELF__
|
| 1110 |
|
|
# define DYNAMIC_LOADING
|
| 1111 |
|
|
# ifdef UNDEFINED /* includes ro data */
|
| 1112 |
|
|
extern int _etext[];
|
| 1113 |
|
|
# define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff))
|
| 1114 |
|
|
# endif
|
| 1115 |
|
|
# include <features.h>
|
| 1116 |
|
|
# if defined(__GLIBC__) && __GLIBC__ >= 2
|
| 1117 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1118 |
|
|
# else
|
| 1119 |
|
|
extern char **__environ;
|
| 1120 |
|
|
# define DATASTART ((ptr_t)(&__environ))
|
| 1121 |
|
|
/* hideous kludge: __environ is the first */
|
| 1122 |
|
|
/* word in crt0.o, and delimits the start */
|
| 1123 |
|
|
/* of the data segment, no matter which */
|
| 1124 |
|
|
/* ld options were passed through. */
|
| 1125 |
|
|
/* We could use _etext instead, but that */
|
| 1126 |
|
|
/* would include .rodata, which may */
|
| 1127 |
|
|
/* contain large read-only data tables */
|
| 1128 |
|
|
/* that we'd rather not scan. */
|
| 1129 |
|
|
# endif
|
| 1130 |
|
|
extern int _end[];
|
| 1131 |
|
|
# define DATAEND (_end)
|
| 1132 |
|
|
# else
|
| 1133 |
|
|
extern int etext[];
|
| 1134 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
| 1135 |
|
|
# endif
|
| 1136 |
|
|
# ifdef USE_I686_PREFETCH
|
| 1137 |
|
|
/* FIXME: Thus should use __builtin_prefetch, but we'll leave that */
|
| 1138 |
|
|
/* for the next rtelease. */
|
| 1139 |
|
|
# define PREFETCH(x) \
|
| 1140 |
|
|
__asm__ __volatile__ (" prefetchnta %0": : "m"(*(char *)(x)))
|
| 1141 |
|
|
/* Empirically prefetcht0 is much more effective at reducing */
|
| 1142 |
|
|
/* cache miss stalls for the targetted load instructions. But it */
|
| 1143 |
|
|
/* seems to interfere enough with other cache traffic that the net */
|
| 1144 |
|
|
/* result is worse than prefetchnta. */
|
| 1145 |
|
|
# if 0
|
| 1146 |
|
|
/* Using prefetches for write seems to have a slight negative */
|
| 1147 |
|
|
/* impact on performance, at least for a PIII/500. */
|
| 1148 |
|
|
# define PREFETCH_FOR_WRITE(x) \
|
| 1149 |
|
|
__asm__ __volatile__ (" prefetcht0 %0": : "m"(*(char *)(x)))
|
| 1150 |
|
|
# endif
|
| 1151 |
|
|
# endif
|
| 1152 |
|
|
# ifdef USE_3DNOW_PREFETCH
|
| 1153 |
|
|
# define PREFETCH(x) \
|
| 1154 |
|
|
__asm__ __volatile__ (" prefetch %0": : "m"(*(char *)(x)))
|
| 1155 |
|
|
# define PREFETCH_FOR_WRITE(x) \
|
| 1156 |
|
|
__asm__ __volatile__ (" prefetchw %0": : "m"(*(char *)(x)))
|
| 1157 |
|
|
# endif
|
| 1158 |
|
|
# endif
|
| 1159 |
|
|
# ifdef CYGWIN32
|
| 1160 |
|
|
# define OS_TYPE "CYGWIN32"
|
| 1161 |
|
|
extern int _data_start__[];
|
| 1162 |
|
|
extern int _data_end__[];
|
| 1163 |
|
|
extern int _bss_start__[];
|
| 1164 |
|
|
extern int _bss_end__[];
|
| 1165 |
|
|
/* For binutils 2.9.1, we have */
|
| 1166 |
|
|
/* DATASTART = _data_start__ */
|
| 1167 |
|
|
/* DATAEND = _bss_end__ */
|
| 1168 |
|
|
/* whereas for some earlier versions it was */
|
| 1169 |
|
|
/* DATASTART = _bss_start__ */
|
| 1170 |
|
|
/* DATAEND = _data_end__ */
|
| 1171 |
|
|
/* To get it right for both, we take the */
|
| 1172 |
|
|
/* minumum/maximum of the two. */
|
| 1173 |
|
|
# ifndef MAX
|
| 1174 |
|
|
# define MAX(x,y) ((x) > (y) ? (x) : (y))
|
| 1175 |
|
|
# endif
|
| 1176 |
|
|
# ifndef MIN
|
| 1177 |
|
|
# define MIN(x,y) ((x) < (y) ? (x) : (y))
|
| 1178 |
|
|
# endif
|
| 1179 |
|
|
# define DATASTART ((ptr_t) MIN(_data_start__, _bss_start__))
|
| 1180 |
|
|
# define DATAEND ((ptr_t) MAX(_data_end__, _bss_end__))
|
| 1181 |
|
|
# undef STACK_GRAN
|
| 1182 |
|
|
# define STACK_GRAN 0x10000
|
| 1183 |
|
|
# define HEURISTIC1
|
| 1184 |
|
|
# endif
|
| 1185 |
|
|
# ifdef OS2
|
| 1186 |
|
|
# define OS_TYPE "OS2"
|
| 1187 |
|
|
/* STACKBOTTOM and DATASTART are handled specially in */
|
| 1188 |
|
|
/* os_dep.c. OS2 actually has the right */
|
| 1189 |
|
|
/* system call! */
|
| 1190 |
|
|
# define DATAEND /* not needed */
|
| 1191 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1192 |
|
|
# endif
|
| 1193 |
|
|
# ifdef MSWIN32
|
| 1194 |
|
|
# define OS_TYPE "MSWIN32"
|
| 1195 |
|
|
/* STACKBOTTOM and DATASTART are handled specially in */
|
| 1196 |
|
|
/* os_dep.c. */
|
| 1197 |
|
|
# ifndef __WATCOMC__
|
| 1198 |
|
|
# define MPROTECT_VDB
|
| 1199 |
|
|
# endif
|
| 1200 |
|
|
# define DATAEND /* not needed */
|
| 1201 |
|
|
# endif
|
| 1202 |
|
|
# ifdef MSWINCE
|
| 1203 |
|
|
# define OS_TYPE "MSWINCE"
|
| 1204 |
|
|
# define DATAEND /* not needed */
|
| 1205 |
|
|
# endif
|
| 1206 |
|
|
# ifdef DJGPP
|
| 1207 |
|
|
# define OS_TYPE "DJGPP"
|
| 1208 |
|
|
# include "stubinfo.h"
|
| 1209 |
|
|
extern int etext[];
|
| 1210 |
|
|
extern int _stklen;
|
| 1211 |
|
|
extern int __djgpp_stack_limit;
|
| 1212 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0x1ff) & ~0x1ff))
|
| 1213 |
|
|
/* # define STACKBOTTOM ((ptr_t)((word) _stubinfo + _stubinfo->size \
|
| 1214 |
|
|
+ _stklen)) */
|
| 1215 |
|
|
# define STACKBOTTOM ((ptr_t)((word) __djgpp_stack_limit + _stklen))
|
| 1216 |
|
|
/* This may not be right. */
|
| 1217 |
|
|
# endif
|
| 1218 |
|
|
# ifdef OPENBSD
|
| 1219 |
|
|
# define OS_TYPE "OPENBSD"
|
| 1220 |
|
|
# endif
|
| 1221 |
|
|
# ifdef FREEBSD
|
| 1222 |
|
|
# define OS_TYPE "FREEBSD"
|
| 1223 |
|
|
# ifndef GC_FREEBSD_THREADS
|
| 1224 |
|
|
# define MPROTECT_VDB
|
| 1225 |
|
|
# endif
|
| 1226 |
|
|
# define SIG_SUSPEND SIGUSR1
|
| 1227 |
|
|
# define SIG_THR_RESTART SIGUSR2
|
| 1228 |
|
|
# define FREEBSD_STACKBOTTOM
|
| 1229 |
|
|
# ifdef __ELF__
|
| 1230 |
|
|
# define DYNAMIC_LOADING
|
| 1231 |
|
|
# endif
|
| 1232 |
|
|
extern char etext[];
|
| 1233 |
|
|
extern char * GC_FreeBSDGetDataStart();
|
| 1234 |
|
|
# define DATASTART GC_FreeBSDGetDataStart(0x1000, &etext)
|
| 1235 |
|
|
# endif
|
| 1236 |
|
|
# ifdef NETBSD
|
| 1237 |
|
|
# define OS_TYPE "NETBSD"
|
| 1238 |
|
|
# ifdef __ELF__
|
| 1239 |
|
|
# define DYNAMIC_LOADING
|
| 1240 |
|
|
# endif
|
| 1241 |
|
|
# endif
|
| 1242 |
|
|
# ifdef THREE86BSD
|
| 1243 |
|
|
# define OS_TYPE "THREE86BSD"
|
| 1244 |
|
|
# endif
|
| 1245 |
|
|
# ifdef BSDI
|
| 1246 |
|
|
# define OS_TYPE "BSDI"
|
| 1247 |
|
|
# endif
|
| 1248 |
|
|
# if defined(OPENBSD) || defined(NETBSD) \
|
| 1249 |
|
|
|| defined(THREE86BSD) || defined(BSDI)
|
| 1250 |
|
|
# define HEURISTIC2
|
| 1251 |
|
|
extern char etext[];
|
| 1252 |
|
|
# define DATASTART ((ptr_t)(etext))
|
| 1253 |
|
|
# endif
|
| 1254 |
|
|
# ifdef NEXT
|
| 1255 |
|
|
# define OS_TYPE "NEXT"
|
| 1256 |
|
|
# define DATASTART ((ptr_t) get_etext())
|
| 1257 |
|
|
# define STACKBOTTOM ((ptr_t)0xc0000000)
|
| 1258 |
|
|
# define DATAEND /* not needed */
|
| 1259 |
|
|
# endif
|
| 1260 |
|
|
# ifdef DOS4GW
|
| 1261 |
|
|
# define OS_TYPE "DOS4GW"
|
| 1262 |
|
|
extern long __nullarea;
|
| 1263 |
|
|
extern char _end;
|
| 1264 |
|
|
extern char *_STACKTOP;
|
| 1265 |
|
|
/* Depending on calling conventions Watcom C either precedes
|
| 1266 |
|
|
or does not precedes with undescore names of C-variables.
|
| 1267 |
|
|
Make sure startup code variables always have the same names. */
|
| 1268 |
|
|
#pragma aux __nullarea "*";
|
| 1269 |
|
|
#pragma aux _end "*";
|
| 1270 |
|
|
# define STACKBOTTOM ((ptr_t) _STACKTOP)
|
| 1271 |
|
|
/* confused? me too. */
|
| 1272 |
|
|
# define DATASTART ((ptr_t) &__nullarea)
|
| 1273 |
|
|
# define DATAEND ((ptr_t) &_end)
|
| 1274 |
|
|
# endif
|
| 1275 |
|
|
# ifdef HURD
|
| 1276 |
|
|
# define OS_TYPE "HURD"
|
| 1277 |
|
|
# define STACK_GROWS_DOWN
|
| 1278 |
|
|
# define HEURISTIC2
|
| 1279 |
|
|
extern int __data_start[];
|
| 1280 |
|
|
# define DATASTART ( (ptr_t) (__data_start))
|
| 1281 |
|
|
extern int _end[];
|
| 1282 |
|
|
# define DATAEND ( (ptr_t) (_end))
|
| 1283 |
|
|
/* # define MPROTECT_VDB Not quite working yet? */
|
| 1284 |
|
|
# define DYNAMIC_LOADING
|
| 1285 |
|
|
# endif
|
| 1286 |
|
|
# endif
|
| 1287 |
|
|
|
| 1288 |
|
|
# ifdef NS32K
|
| 1289 |
|
|
# define MACH_TYPE "NS32K"
|
| 1290 |
|
|
# define ALIGNMENT 4
|
| 1291 |
|
|
extern char **environ;
|
| 1292 |
|
|
# define DATASTART ((ptr_t)(&environ))
|
| 1293 |
|
|
/* hideous kludge: environ is the first */
|
| 1294 |
|
|
/* word in crt0.o, and delimits the start */
|
| 1295 |
|
|
/* of the data segment, no matter which */
|
| 1296 |
|
|
/* ld options were passed through. */
|
| 1297 |
|
|
# define STACKBOTTOM ((ptr_t) 0xfffff000) /* for Encore */
|
| 1298 |
|
|
# endif
|
| 1299 |
|
|
|
| 1300 |
|
|
# ifdef MIPS
|
| 1301 |
|
|
# define MACH_TYPE "MIPS"
|
| 1302 |
|
|
# ifdef LINUX
|
| 1303 |
|
|
/* This was developed for a linuxce style platform. Probably */
|
| 1304 |
|
|
/* needs to be tweaked for workstation class machines. */
|
| 1305 |
|
|
# define OS_TYPE "LINUX"
|
| 1306 |
|
|
# define DYNAMIC_LOADING
|
| 1307 |
|
|
extern int _end[];
|
| 1308 |
|
|
# define DATAEND (_end)
|
| 1309 |
|
|
extern int __data_start[];
|
| 1310 |
|
|
# define DATASTART ((ptr_t)(__data_start))
|
| 1311 |
|
|
# define ALIGNMENT 4
|
| 1312 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1313 |
|
|
# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 2 || __GLIBC__ > 2
|
| 1314 |
|
|
# define LINUX_STACKBOTTOM
|
| 1315 |
|
|
# else
|
| 1316 |
|
|
# define STACKBOTTOM 0x80000000
|
| 1317 |
|
|
# endif
|
| 1318 |
|
|
# endif /* Linux */
|
| 1319 |
|
|
# ifdef EWS4800
|
| 1320 |
|
|
# define HEURISTIC2
|
| 1321 |
|
|
# if defined(_MIPS_SZPTR) && (_MIPS_SZPTR == 64)
|
| 1322 |
|
|
extern int _fdata[], _end[];
|
| 1323 |
|
|
# define DATASTART ((ptr_t)_fdata)
|
| 1324 |
|
|
# define DATAEND ((ptr_t)_end)
|
| 1325 |
|
|
# define CPP_WORDSZ _MIPS_SZPTR
|
| 1326 |
|
|
# define ALIGNMENT (_MIPS_SZPTR/8)
|
| 1327 |
|
|
# else
|
| 1328 |
|
|
extern int etext[], edata[], end[];
|
| 1329 |
|
|
extern int _DYNAMIC_LINKING[], _gp[];
|
| 1330 |
|
|
# define DATASTART ((ptr_t)((((word)etext + 0x3ffff) & ~0x3ffff) \
|
| 1331 |
|
|
+ ((word)etext & 0xffff)))
|
| 1332 |
|
|
# define DATAEND (edata)
|
| 1333 |
|
|
# define DATASTART2 (_DYNAMIC_LINKING \
|
| 1334 |
|
|
? (ptr_t)(((word)_gp + 0x8000 + 0x3ffff) & ~0x3ffff) \
|
| 1335 |
|
|
: (ptr_t)edata)
|
| 1336 |
|
|
# define DATAEND2 (end)
|
| 1337 |
|
|
# define ALIGNMENT 4
|
| 1338 |
|
|
# endif
|
| 1339 |
|
|
# define OS_TYPE "EWS4800"
|
| 1340 |
|
|
# define USE_GENERIC_PUSH_REGS 1
|
| 1341 |
|
|
# endif
|
| 1342 |
|
|
# ifdef ULTRIX
|
| 1343 |
|
|
# define HEURISTIC2
|
| 1344 |
|
|
# define DATASTART (ptr_t)0x10000000
|
| 1345 |
|
|
/* Could probably be slightly higher since */
|
| 1346 |
|
|
/* startup code allocates lots of stuff. */
|
| 1347 |
|
|
# define OS_TYPE "ULTRIX"
|
| 1348 |
|
|
# define ALIGNMENT 4
|
| 1349 |
|
|
# endif
|
| 1350 |
|
|
# ifdef RISCOS
|
| 1351 |
|
|
# define HEURISTIC2
|
| 1352 |
|
|
# define DATASTART (ptr_t)0x10000000
|
| 1353 |
|
|
# define OS_TYPE "RISCOS"
|
| 1354 |
|
|
# define ALIGNMENT 4 /* Required by hardware */
|
| 1355 |
|
|
# endif
|
| 1356 |
|
|
# ifdef IRIX5
|
| 1357 |
|
|
# define HEURISTIC2
|
| 1358 |
|
|
extern int _fdata[];
|
| 1359 |
|
|
# define DATASTART ((ptr_t)(_fdata))
|
| 1360 |
|
|
# ifdef USE_MMAP
|
| 1361 |
|
|
# define HEAP_START (ptr_t)0x30000000
|
| 1362 |
|
|
# else
|
| 1363 |
|
|
# define HEAP_START DATASTART
|
| 1364 |
|
|
# endif
|
| 1365 |
|
|
/* Lowest plausible heap address. */
|
| 1366 |
|
|
/* In the MMAP case, we map there. */
|
| 1367 |
|
|
/* In either case it is used to identify */
|
| 1368 |
|
|
/* heap sections so they're not */
|
| 1369 |
|
|
/* considered as roots. */
|
| 1370 |
|
|
# define OS_TYPE "IRIX5"
|
| 1371 |
|
|
/*# define MPROTECT_VDB DOB: this should work, but there is evidence */
|
| 1372 |
|
|
/* of recent breakage. */
|
| 1373 |
|
|
# ifdef _MIPS_SZPTR
|
| 1374 |
|
|
# define CPP_WORDSZ _MIPS_SZPTR
|
| 1375 |
|
|
# define ALIGNMENT (_MIPS_SZPTR/8)
|
| 1376 |
|
|
# if CPP_WORDSZ != 64
|
| 1377 |
|
|
# define ALIGN_DOUBLE
|
| 1378 |
|
|
# endif
|
| 1379 |
|
|
# else
|
| 1380 |
|
|
# define ALIGNMENT 4
|
| 1381 |
|
|
# define ALIGN_DOUBLE
|
| 1382 |
|
|
# endif
|
| 1383 |
|
|
# define DYNAMIC_LOADING
|
| 1384 |
|
|
# endif
|
| 1385 |
|
|
# ifdef MSWINCE
|
| 1386 |
|
|
# define OS_TYPE "MSWINCE"
|
| 1387 |
|
|
# define ALIGNMENT 4
|
| 1388 |
|
|
# define DATAEND /* not needed */
|
| 1389 |
|
|
# endif
|
| 1390 |
|
|
# if defined(NETBSD)
|
| 1391 |
|
|
# define OS_TYPE "NETBSD"
|
| 1392 |
|
|
# define ALIGNMENT 4
|
| 1393 |
|
|
# define HEURISTIC2
|
| 1394 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1395 |
|
|
# ifdef __ELF__
|
| 1396 |
|
|
extern int etext[];
|
| 1397 |
|
|
# define DATASTART GC_data_start
|
| 1398 |
|
|
# define NEED_FIND_LIMIT
|
| 1399 |
|
|
# define DYNAMIC_LOADING
|
| 1400 |
|
|
# else
|
| 1401 |
|
|
# define DATASTART ((ptr_t) 0x10000000)
|
| 1402 |
|
|
# define STACKBOTTOM ((ptr_t) 0x7ffff000)
|
| 1403 |
|
|
# endif /* _ELF_ */
|
| 1404 |
|
|
# endif
|
| 1405 |
|
|
# endif
|
| 1406 |
|
|
|
| 1407 |
|
|
# ifdef RS6000
|
| 1408 |
|
|
# define MACH_TYPE "RS6000"
|
| 1409 |
|
|
# ifdef ALIGNMENT
|
| 1410 |
|
|
# undef ALIGNMENT
|
| 1411 |
|
|
# endif
|
| 1412 |
|
|
# ifdef IA64
|
| 1413 |
|
|
# undef IA64 /* DOB: some AIX installs stupidly define IA64 in /usr/include/sys/systemcfg.h */
|
| 1414 |
|
|
# endif
|
| 1415 |
|
|
# ifdef __64BIT__
|
| 1416 |
|
|
# define ALIGNMENT 8
|
| 1417 |
|
|
# define CPP_WORDSZ 64
|
| 1418 |
|
|
# define STACKBOTTOM ((ptr_t)0x1000000000000000)
|
| 1419 |
|
|
# else
|
| 1420 |
|
|
# define ALIGNMENT 4
|
| 1421 |
|
|
# define CPP_WORDSZ 32
|
| 1422 |
|
|
# define STACKBOTTOM ((ptr_t)((ulong)&errno))
|
| 1423 |
|
|
# endif
|
| 1424 |
|
|
/* From AIX linker man page:
|
| 1425 |
|
|
_text Specifies the first location of the program.
|
| 1426 |
|
|
_etext Specifies the first location after the program.
|
| 1427 |
|
|
_data Specifies the first location of the data.
|
| 1428 |
|
|
_edata Specifies the first location after the initialized data
|
| 1429 |
|
|
_end or end Specifies the first location after all data.
|
| 1430 |
|
|
*/
|
| 1431 |
|
|
extern int _data[], _end[];
|
| 1432 |
|
|
# define DATASTART ((ptr_t)((ulong)_data))
|
| 1433 |
|
|
# define DATAEND ((ptr_t)((ulong)_end))
|
| 1434 |
|
|
extern int errno;
|
| 1435 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1436 |
|
|
# define DYNAMIC_LOADING
|
| 1437 |
|
|
/* For really old versions of AIX, this may have to be removed. */
|
| 1438 |
|
|
# endif
|
| 1439 |
|
|
|
| 1440 |
|
|
# ifdef HP_PA
|
| 1441 |
|
|
# define MACH_TYPE "HP_PA"
|
| 1442 |
|
|
# ifdef __LP64__
|
| 1443 |
|
|
# define CPP_WORDSZ 64
|
| 1444 |
|
|
# define ALIGNMENT 8
|
| 1445 |
|
|
# else
|
| 1446 |
|
|
# define CPP_WORDSZ 32
|
| 1447 |
|
|
# define ALIGNMENT 4
|
| 1448 |
|
|
# define ALIGN_DOUBLE
|
| 1449 |
|
|
# endif
|
| 1450 |
|
|
# if !defined(GC_HPUX_THREADS) && !defined(GC_LINUX_THREADS)
|
| 1451 |
|
|
# ifndef LINUX /* For now. */
|
| 1452 |
|
|
# define MPROTECT_VDB
|
| 1453 |
|
|
# endif
|
| 1454 |
|
|
# else
|
| 1455 |
|
|
# define GENERIC_COMPARE_AND_SWAP
|
| 1456 |
|
|
/* No compare-and-swap instruction. Use pthread mutexes */
|
| 1457 |
|
|
/* when we absolutely have to. */
|
| 1458 |
|
|
# ifdef PARALLEL_MARK
|
| 1459 |
|
|
# define USE_MARK_BYTES
|
| 1460 |
|
|
/* Minimize compare-and-swap usage. */
|
| 1461 |
|
|
# endif
|
| 1462 |
|
|
# endif
|
| 1463 |
|
|
# define STACK_GROWS_UP
|
| 1464 |
|
|
# ifdef HPUX
|
| 1465 |
|
|
# define OS_TYPE "HPUX"
|
| 1466 |
|
|
extern int __data_start[];
|
| 1467 |
|
|
# define DATASTART ((ptr_t)(__data_start))
|
| 1468 |
|
|
# if 0
|
| 1469 |
|
|
/* The following appears to work for 7xx systems running HP/UX */
|
| 1470 |
|
|
/* 9.xx Furthermore, it might result in much faster */
|
| 1471 |
|
|
/* collections than HEURISTIC2, which may involve scanning */
|
| 1472 |
|
|
/* segments that directly precede the stack. It is not the */
|
| 1473 |
|
|
/* default, since it may not work on older machine/OS */
|
| 1474 |
|
|
/* combinations. (Thanks to Raymond X.T. Nijssen for uncovering */
|
| 1475 |
|
|
/* this.) */
|
| 1476 |
|
|
# define STACKBOTTOM ((ptr_t) 0x7b033000) /* from /etc/conf/h/param.h */
|
| 1477 |
|
|
# else
|
| 1478 |
|
|
/* Gustavo Rodriguez-Rivera suggested changing HEURISTIC2 */
|
| 1479 |
|
|
/* to this. Note that the GC must be initialized before the */
|
| 1480 |
|
|
/* first putenv call. */
|
| 1481 |
|
|
extern char ** environ;
|
| 1482 |
|
|
# define STACKBOTTOM ((ptr_t)environ)
|
| 1483 |
|
|
# endif
|
| 1484 |
|
|
# define DYNAMIC_LOADING
|
| 1485 |
|
|
# include <unistd.h>
|
| 1486 |
|
|
# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
|
| 1487 |
|
|
# ifndef __GNUC__
|
| 1488 |
|
|
# define PREFETCH(x) { \
|
| 1489 |
|
|
register long addr = (long)(x); \
|
| 1490 |
|
|
(void) _asm ("LDW", 0, 0, addr, 0); \
|
| 1491 |
|
|
}
|
| 1492 |
|
|
# endif
|
| 1493 |
|
|
# endif /* HPUX */
|
| 1494 |
|
|
# ifdef LINUX
|
| 1495 |
|
|
# define OS_TYPE "LINUX"
|
| 1496 |
|
|
# define LINUX_STACKBOTTOM
|
| 1497 |
|
|
# define DYNAMIC_LOADING
|
| 1498 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1499 |
|
|
extern int _end[];
|
| 1500 |
|
|
# define DATAEND (&_end)
|
| 1501 |
|
|
# endif /* LINUX */
|
| 1502 |
|
|
# endif /* HP_PA */
|
| 1503 |
|
|
|
| 1504 |
|
|
# ifdef ALPHA
|
| 1505 |
|
|
# define MACH_TYPE "ALPHA"
|
| 1506 |
|
|
# define ALIGNMENT 8
|
| 1507 |
|
|
# define CPP_WORDSZ 64
|
| 1508 |
|
|
# ifndef LINUX
|
| 1509 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1510 |
|
|
/* Gcc and probably the DEC/Compaq compiler spill pointers to preserved */
|
| 1511 |
|
|
/* fp registers in some cases when the target is a 21264. The assembly */
|
| 1512 |
|
|
/* code doesn't handle that yet, and version dependencies make that a */
|
| 1513 |
|
|
/* bit tricky. Do the easy thing for now. */
|
| 1514 |
|
|
# endif
|
| 1515 |
|
|
# ifdef NETBSD
|
| 1516 |
|
|
# define OS_TYPE "NETBSD"
|
| 1517 |
|
|
# define HEURISTIC2
|
| 1518 |
|
|
# define DATASTART GC_data_start
|
| 1519 |
|
|
# define ELFCLASS32 32
|
| 1520 |
|
|
# define ELFCLASS64 64
|
| 1521 |
|
|
# define ELF_CLASS ELFCLASS64
|
| 1522 |
|
|
# define DYNAMIC_LOADING
|
| 1523 |
|
|
# endif
|
| 1524 |
|
|
# ifdef OPENBSD
|
| 1525 |
|
|
# define OS_TYPE "OPENBSD"
|
| 1526 |
|
|
# define HEURISTIC2
|
| 1527 |
|
|
# ifdef __ELF__ /* since OpenBSD/Alpha 2.9 */
|
| 1528 |
|
|
# define DATASTART GC_data_start
|
| 1529 |
|
|
# define ELFCLASS32 32
|
| 1530 |
|
|
# define ELFCLASS64 64
|
| 1531 |
|
|
# define ELF_CLASS ELFCLASS64
|
| 1532 |
|
|
# else /* ECOFF, until OpenBSD/Alpha 2.7 */
|
| 1533 |
|
|
# define DATASTART ((ptr_t) 0x140000000)
|
| 1534 |
|
|
# endif
|
| 1535 |
|
|
# endif
|
| 1536 |
|
|
# ifdef FREEBSD
|
| 1537 |
|
|
# define OS_TYPE "FREEBSD"
|
| 1538 |
|
|
/* MPROTECT_VDB is not yet supported at all on FreeBSD/alpha. */
|
| 1539 |
|
|
# define SIG_SUSPEND SIGUSR1
|
| 1540 |
|
|
# define SIG_THR_RESTART SIGUSR2
|
| 1541 |
|
|
# define FREEBSD_STACKBOTTOM
|
| 1542 |
|
|
# ifdef __ELF__
|
| 1543 |
|
|
# define DYNAMIC_LOADING
|
| 1544 |
|
|
# endif
|
| 1545 |
|
|
/* Handle unmapped hole alpha*-*-freebsd[45]* puts between etext and edata. */
|
| 1546 |
|
|
extern char etext[];
|
| 1547 |
|
|
extern char edata[];
|
| 1548 |
|
|
extern char end[];
|
| 1549 |
|
|
# define NEED_FIND_LIMIT
|
| 1550 |
|
|
# define DATASTART ((ptr_t)(&etext))
|
| 1551 |
|
|
# define DATAEND (GC_find_limit (DATASTART, TRUE))
|
| 1552 |
|
|
# define DATASTART2 ((ptr_t)(&edata))
|
| 1553 |
|
|
# define DATAEND2 ((ptr_t)(&end))
|
| 1554 |
|
|
# endif
|
| 1555 |
|
|
# ifdef OSF1
|
| 1556 |
|
|
# define OS_TYPE "OSF1"
|
| 1557 |
|
|
# define DATASTART ((ptr_t) 0x140000000)
|
| 1558 |
|
|
extern int _end[];
|
| 1559 |
|
|
# define DATAEND ((ptr_t) &_end)
|
| 1560 |
|
|
extern char ** environ;
|
| 1561 |
|
|
/* round up from the value of environ to the nearest page boundary */
|
| 1562 |
|
|
/* Probably breaks if putenv is called before collector */
|
| 1563 |
|
|
/* initialization. */
|
| 1564 |
|
|
# define STACKBOTTOM ((ptr_t)(((word)(environ) | (getpagesize()-1))+1))
|
| 1565 |
|
|
/* # define HEURISTIC2 */
|
| 1566 |
|
|
/* Normally HEURISTIC2 is too conervative, since */
|
| 1567 |
|
|
/* the text segment immediately follows the stack. */
|
| 1568 |
|
|
/* Hence we give an upper pound. */
|
| 1569 |
|
|
/* This is currently unused, since we disabled HEURISTIC2 */
|
| 1570 |
|
|
extern int __start[];
|
| 1571 |
|
|
# define HEURISTIC2_LIMIT ((ptr_t)((word)(__start) & ~(getpagesize()-1)))
|
| 1572 |
|
|
# ifndef GC_OSF1_THREADS
|
| 1573 |
|
|
/* Unresolved signal issues with threads. */
|
| 1574 |
|
|
# define MPROTECT_VDB
|
| 1575 |
|
|
# endif
|
| 1576 |
|
|
# define DYNAMIC_LOADING
|
| 1577 |
|
|
# endif
|
| 1578 |
|
|
# ifdef LINUX
|
| 1579 |
|
|
# define OS_TYPE "LINUX"
|
| 1580 |
|
|
# define LINUX_STACKBOTTOM
|
| 1581 |
|
|
# ifdef __ELF__
|
| 1582 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1583 |
|
|
# define DYNAMIC_LOADING
|
| 1584 |
|
|
# else
|
| 1585 |
|
|
# define DATASTART ((ptr_t) 0x140000000)
|
| 1586 |
|
|
# endif
|
| 1587 |
|
|
extern int _end[];
|
| 1588 |
|
|
# define DATAEND (_end)
|
| 1589 |
|
|
# define MPROTECT_VDB
|
| 1590 |
|
|
/* Has only been superficially tested. May not */
|
| 1591 |
|
|
/* work on all versions. */
|
| 1592 |
|
|
# endif
|
| 1593 |
|
|
# endif
|
| 1594 |
|
|
|
| 1595 |
|
|
# ifdef IA64
|
| 1596 |
|
|
# define MACH_TYPE "IA64"
|
| 1597 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1598 |
|
|
/* We need to get preserved registers in addition to register */
|
| 1599 |
|
|
/* windows. That's easiest to do with setjmp. */
|
| 1600 |
|
|
# ifdef PARALLEL_MARK
|
| 1601 |
|
|
# define USE_MARK_BYTES
|
| 1602 |
|
|
/* Compare-and-exchange is too expensive to use for */
|
| 1603 |
|
|
/* setting mark bits. */
|
| 1604 |
|
|
# endif
|
| 1605 |
|
|
# ifdef HPUX
|
| 1606 |
|
|
# ifdef _ILP32
|
| 1607 |
|
|
# define CPP_WORDSZ 32
|
| 1608 |
|
|
# define ALIGN_DOUBLE
|
| 1609 |
|
|
/* Requires 8 byte alignment for malloc */
|
| 1610 |
|
|
# define ALIGNMENT 4
|
| 1611 |
|
|
# else
|
| 1612 |
|
|
# ifndef _LP64
|
| 1613 |
|
|
---> unknown ABI
|
| 1614 |
|
|
# endif
|
| 1615 |
|
|
# define CPP_WORDSZ 64
|
| 1616 |
|
|
# define ALIGN_DOUBLE
|
| 1617 |
|
|
/* Requires 16 byte alignment for malloc */
|
| 1618 |
|
|
# define ALIGNMENT 8
|
| 1619 |
|
|
# endif
|
| 1620 |
|
|
# define OS_TYPE "HPUX"
|
| 1621 |
|
|
extern int __data_start[];
|
| 1622 |
|
|
# define DATASTART ((ptr_t)(__data_start))
|
| 1623 |
|
|
/* Gustavo Rodriguez-Rivera suggested changing HEURISTIC2 */
|
| 1624 |
|
|
/* to this. Note that the GC must be initialized before the */
|
| 1625 |
|
|
/* first putenv call. */
|
| 1626 |
|
|
extern char ** environ;
|
| 1627 |
|
|
# define STACKBOTTOM ((ptr_t)environ)
|
| 1628 |
|
|
# define HPUX_STACKBOTTOM
|
| 1629 |
|
|
# define DYNAMIC_LOADING
|
| 1630 |
|
|
# include <unistd.h>
|
| 1631 |
|
|
# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
|
| 1632 |
|
|
/* The following was empirically determined, and is probably */
|
| 1633 |
|
|
/* not very robust. */
|
| 1634 |
|
|
/* Note that the backing store base seems to be at a nice */
|
| 1635 |
|
|
/* address minus one page. */
|
| 1636 |
|
|
# define BACKING_STORE_DISPLACEMENT 0x1000000
|
| 1637 |
|
|
# define BACKING_STORE_ALIGNMENT 0x1000
|
| 1638 |
|
|
extern ptr_t GC_register_stackbottom;
|
| 1639 |
|
|
# define BACKING_STORE_BASE GC_register_stackbottom
|
| 1640 |
|
|
/* Known to be wrong for recent HP/UX versions!!! */
|
| 1641 |
|
|
# endif
|
| 1642 |
|
|
# ifdef LINUX
|
| 1643 |
|
|
# define CPP_WORDSZ 64
|
| 1644 |
|
|
# define ALIGN_DOUBLE
|
| 1645 |
|
|
/* Requires 16 byte alignment for malloc */
|
| 1646 |
|
|
# define ALIGNMENT 8
|
| 1647 |
|
|
# define OS_TYPE "LINUX"
|
| 1648 |
|
|
/* The following works on NUE and older kernels: */
|
| 1649 |
|
|
/* # define STACKBOTTOM ((ptr_t) 0xa000000000000000l) */
|
| 1650 |
|
|
/* This does not work on NUE: */
|
| 1651 |
|
|
# define LINUX_STACKBOTTOM
|
| 1652 |
|
|
/* We also need the base address of the register stack */
|
| 1653 |
|
|
/* backing store. This is computed in */
|
| 1654 |
|
|
/* GC_linux_register_stack_base based on the following */
|
| 1655 |
|
|
/* constants: */
|
| 1656 |
|
|
# define BACKING_STORE_ALIGNMENT 0x100000
|
| 1657 |
|
|
# define BACKING_STORE_DISPLACEMENT 0x80000000
|
| 1658 |
|
|
extern ptr_t GC_register_stackbottom;
|
| 1659 |
|
|
# define BACKING_STORE_BASE GC_register_stackbottom
|
| 1660 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1661 |
|
|
# ifdef __GNUC__
|
| 1662 |
|
|
# define DYNAMIC_LOADING
|
| 1663 |
|
|
# else
|
| 1664 |
|
|
/* In the Intel compiler environment, we seem to end up with */
|
| 1665 |
|
|
/* statically linked executables and an undefined reference */
|
| 1666 |
|
|
/* to _DYNAMIC */
|
| 1667 |
|
|
# endif
|
| 1668 |
|
|
# define MPROTECT_VDB
|
| 1669 |
|
|
/* Requires Linux 2.3.47 or later. */
|
| 1670 |
|
|
extern int _end[];
|
| 1671 |
|
|
# define DATAEND (_end)
|
| 1672 |
|
|
# ifdef __GNUC__
|
| 1673 |
|
|
# ifndef __INTEL_COMPILER
|
| 1674 |
|
|
# define PREFETCH(x) \
|
| 1675 |
|
|
__asm__ (" lfetch [%0]": : "r"(x))
|
| 1676 |
|
|
# define PREFETCH_FOR_WRITE(x) \
|
| 1677 |
|
|
__asm__ (" lfetch.excl [%0]": : "r"(x))
|
| 1678 |
|
|
# define CLEAR_DOUBLE(x) \
|
| 1679 |
|
|
__asm__ (" stf.spill [%0]=f0": : "r"((void *)(x)))
|
| 1680 |
|
|
# else
|
| 1681 |
|
|
# include <ia64intrin.h>
|
| 1682 |
|
|
# define PREFETCH(x) \
|
| 1683 |
|
|
__lfetch(__lfhint_none, (x))
|
| 1684 |
|
|
# define PREFETCH_FOR_WRITE(x) \
|
| 1685 |
|
|
__lfetch(__lfhint_nta, (x))
|
| 1686 |
|
|
# define CLEAR_DOUBLE(x) \
|
| 1687 |
|
|
__stf_spill((void *)(x), 0)
|
| 1688 |
|
|
# endif // __INTEL_COMPILER
|
| 1689 |
|
|
# endif
|
| 1690 |
|
|
# endif
|
| 1691 |
|
|
# ifdef MSWIN32
|
| 1692 |
|
|
/* FIXME: This is a very partial guess. There is no port, yet. */
|
| 1693 |
|
|
# define OS_TYPE "MSWIN32"
|
| 1694 |
|
|
/* STACKBOTTOM and DATASTART are handled specially in */
|
| 1695 |
|
|
/* os_dep.c. */
|
| 1696 |
|
|
# define DATAEND /* not needed */
|
| 1697 |
|
|
# if defined(_WIN64)
|
| 1698 |
|
|
# define CPP_WORDSZ 64
|
| 1699 |
|
|
# else
|
| 1700 |
|
|
# define CPP_WORDSZ 32 /* Is this possible? */
|
| 1701 |
|
|
# endif
|
| 1702 |
|
|
# define ALIGNMENT 8
|
| 1703 |
|
|
# endif
|
| 1704 |
|
|
# endif
|
| 1705 |
|
|
|
| 1706 |
|
|
# ifdef M88K
|
| 1707 |
|
|
# define MACH_TYPE "M88K"
|
| 1708 |
|
|
# define ALIGNMENT 4
|
| 1709 |
|
|
# define ALIGN_DOUBLE
|
| 1710 |
|
|
extern int etext[];
|
| 1711 |
|
|
# ifdef CX_UX
|
| 1712 |
|
|
# define OS_TYPE "CX_UX"
|
| 1713 |
|
|
# define DATASTART ((((word)etext + 0x3fffff) & ~0x3fffff) + 0x10000)
|
| 1714 |
|
|
# endif
|
| 1715 |
|
|
# ifdef DGUX
|
| 1716 |
|
|
# define OS_TYPE "DGUX"
|
| 1717 |
|
|
extern ptr_t GC_SysVGetDataStart();
|
| 1718 |
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, etext)
|
| 1719 |
|
|
# endif
|
| 1720 |
|
|
# define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */
|
| 1721 |
|
|
# endif
|
| 1722 |
|
|
|
| 1723 |
|
|
# ifdef S370
|
| 1724 |
|
|
/* If this still works, and if anyone cares, this should probably */
|
| 1725 |
|
|
/* be moved to the S390 category. */
|
| 1726 |
|
|
# define MACH_TYPE "S370"
|
| 1727 |
|
|
# define ALIGNMENT 4 /* Required by hardware */
|
| 1728 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1729 |
|
|
# ifdef UTS4
|
| 1730 |
|
|
# define OS_TYPE "UTS4"
|
| 1731 |
|
|
extern int etext[];
|
| 1732 |
|
|
extern int _etext[];
|
| 1733 |
|
|
extern int _end[];
|
| 1734 |
|
|
extern ptr_t GC_SysVGetDataStart();
|
| 1735 |
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, _etext)
|
| 1736 |
|
|
# define DATAEND (_end)
|
| 1737 |
|
|
# define HEURISTIC2
|
| 1738 |
|
|
# endif
|
| 1739 |
|
|
# endif
|
| 1740 |
|
|
|
| 1741 |
|
|
# ifdef S390
|
| 1742 |
|
|
# define MACH_TYPE "S390"
|
| 1743 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1744 |
|
|
# ifndef __s390x__
|
| 1745 |
|
|
# define ALIGNMENT 4
|
| 1746 |
|
|
# define CPP_WORDSZ 32
|
| 1747 |
|
|
# else
|
| 1748 |
|
|
# define ALIGNMENT 8
|
| 1749 |
|
|
# define CPP_WORDSZ 64
|
| 1750 |
|
|
# define HBLKSIZE 4096
|
| 1751 |
|
|
# endif
|
| 1752 |
|
|
# ifdef LINUX
|
| 1753 |
|
|
# define OS_TYPE "LINUX"
|
| 1754 |
|
|
# define LINUX_STACKBOTTOM
|
| 1755 |
|
|
# define DYNAMIC_LOADING
|
| 1756 |
|
|
extern int __data_start[];
|
| 1757 |
|
|
# define DATASTART ((ptr_t)(__data_start))
|
| 1758 |
|
|
extern int _end[];
|
| 1759 |
|
|
# define DATAEND (_end)
|
| 1760 |
|
|
# define CACHE_LINE_SIZE 256
|
| 1761 |
|
|
# define GETPAGESIZE() 4096
|
| 1762 |
|
|
# endif
|
| 1763 |
|
|
# endif
|
| 1764 |
|
|
|
| 1765 |
|
|
# if defined(PJ)
|
| 1766 |
|
|
# define ALIGNMENT 4
|
| 1767 |
|
|
extern int _etext[];
|
| 1768 |
|
|
# define DATASTART ((ptr_t)(_etext))
|
| 1769 |
|
|
# define HEURISTIC1
|
| 1770 |
|
|
# endif
|
| 1771 |
|
|
|
| 1772 |
|
|
# ifdef ARM32
|
| 1773 |
|
|
# define CPP_WORDSZ 32
|
| 1774 |
|
|
# define MACH_TYPE "ARM32"
|
| 1775 |
|
|
# define ALIGNMENT 4
|
| 1776 |
|
|
# ifdef NETBSD
|
| 1777 |
|
|
# define OS_TYPE "NETBSD"
|
| 1778 |
|
|
# define HEURISTIC2
|
| 1779 |
|
|
# ifdef __ELF__
|
| 1780 |
|
|
# define DATASTART GC_data_start
|
| 1781 |
|
|
# define DYNAMIC_LOADING
|
| 1782 |
|
|
# else
|
| 1783 |
|
|
extern char etext[];
|
| 1784 |
|
|
# define DATASTART ((ptr_t)(etext))
|
| 1785 |
|
|
# endif
|
| 1786 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1787 |
|
|
# endif
|
| 1788 |
|
|
# ifdef LINUX
|
| 1789 |
|
|
# define OS_TYPE "LINUX"
|
| 1790 |
|
|
# define LINUX_STACKBOTTOM
|
| 1791 |
|
|
# undef STACK_GRAN
|
| 1792 |
|
|
# define STACK_GRAN 0x10000000
|
| 1793 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1794 |
|
|
# ifdef __ELF__
|
| 1795 |
|
|
# define DYNAMIC_LOADING
|
| 1796 |
|
|
# include <features.h>
|
| 1797 |
|
|
# if defined(__GLIBC__) && __GLIBC__ >= 2
|
| 1798 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1799 |
|
|
# else
|
| 1800 |
|
|
extern char **__environ;
|
| 1801 |
|
|
# define DATASTART ((ptr_t)(&__environ))
|
| 1802 |
|
|
/* hideous kludge: __environ is the first */
|
| 1803 |
|
|
/* word in crt0.o, and delimits the start */
|
| 1804 |
|
|
/* of the data segment, no matter which */
|
| 1805 |
|
|
/* ld options were passed through. */
|
| 1806 |
|
|
/* We could use _etext instead, but that */
|
| 1807 |
|
|
/* would include .rodata, which may */
|
| 1808 |
|
|
/* contain large read-only data tables */
|
| 1809 |
|
|
/* that we'd rather not scan. */
|
| 1810 |
|
|
# endif
|
| 1811 |
|
|
extern int _end[];
|
| 1812 |
|
|
# define DATAEND (_end)
|
| 1813 |
|
|
# else
|
| 1814 |
|
|
extern int etext[];
|
| 1815 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
| 1816 |
|
|
# endif
|
| 1817 |
|
|
# endif
|
| 1818 |
|
|
# ifdef MSWINCE
|
| 1819 |
|
|
# define OS_TYPE "MSWINCE"
|
| 1820 |
|
|
# define DATAEND /* not needed */
|
| 1821 |
|
|
# endif
|
| 1822 |
|
|
# ifdef NOSYS
|
| 1823 |
|
|
/* __data_start is usually defined in the target linker script. */
|
| 1824 |
|
|
extern int __data_start[];
|
| 1825 |
|
|
# define DATASTART (ptr_t)(__data_start)
|
| 1826 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1827 |
|
|
/* __stack_base__ is set in newlib/libc/sys/arm/crt0.S */
|
| 1828 |
|
|
extern void *__stack_base__;
|
| 1829 |
|
|
# define STACKBOTTOM ((ptr_t) (__stack_base__))
|
| 1830 |
|
|
# endif
|
| 1831 |
|
|
#endif
|
| 1832 |
|
|
|
| 1833 |
|
|
# ifdef CRIS
|
| 1834 |
|
|
# define MACH_TYPE "CRIS"
|
| 1835 |
|
|
# define CPP_WORDSZ 32
|
| 1836 |
|
|
# define ALIGNMENT 1
|
| 1837 |
|
|
# define OS_TYPE "LINUX"
|
| 1838 |
|
|
# define DYNAMIC_LOADING
|
| 1839 |
|
|
# define LINUX_STACKBOTTOM
|
| 1840 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1841 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1842 |
|
|
extern int _end[];
|
| 1843 |
|
|
# define DATAEND (_end)
|
| 1844 |
|
|
# endif
|
| 1845 |
|
|
|
| 1846 |
|
|
# ifdef SH
|
| 1847 |
|
|
# define MACH_TYPE "SH"
|
| 1848 |
|
|
# define ALIGNMENT 4
|
| 1849 |
|
|
# ifdef MSWINCE
|
| 1850 |
|
|
# define OS_TYPE "MSWINCE"
|
| 1851 |
|
|
# define DATAEND /* not needed */
|
| 1852 |
|
|
# endif
|
| 1853 |
|
|
# ifdef LINUX
|
| 1854 |
|
|
# define OS_TYPE "LINUX"
|
| 1855 |
|
|
# define LINUX_STACKBOTTOM
|
| 1856 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1857 |
|
|
# define DYNAMIC_LOADING
|
| 1858 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1859 |
|
|
extern int _end[];
|
| 1860 |
|
|
# define DATAEND (_end)
|
| 1861 |
|
|
# endif
|
| 1862 |
|
|
# endif
|
| 1863 |
|
|
|
| 1864 |
|
|
# ifdef SH4
|
| 1865 |
|
|
# define MACH_TYPE "SH4"
|
| 1866 |
|
|
# define OS_TYPE "MSWINCE"
|
| 1867 |
|
|
# define ALIGNMENT 4
|
| 1868 |
|
|
# define DATAEND /* not needed */
|
| 1869 |
|
|
# endif
|
| 1870 |
|
|
|
| 1871 |
|
|
# ifdef M32R
|
| 1872 |
|
|
# define CPP_WORDSZ 32
|
| 1873 |
|
|
# define MACH_TYPE "M32R"
|
| 1874 |
|
|
# define ALIGNMENT 4
|
| 1875 |
|
|
# ifdef LINUX
|
| 1876 |
|
|
# define OS_TYPE "LINUX"
|
| 1877 |
|
|
# define LINUX_STACKBOTTOM
|
| 1878 |
|
|
# undef STACK_GRAN
|
| 1879 |
|
|
# define STACK_GRAN 0x10000000
|
| 1880 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1881 |
|
|
# define DYNAMIC_LOADING
|
| 1882 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1883 |
|
|
extern int _end[];
|
| 1884 |
|
|
# define DATAEND (_end)
|
| 1885 |
|
|
# endif
|
| 1886 |
|
|
# endif
|
| 1887 |
|
|
|
| 1888 |
|
|
# ifdef X86_64
|
| 1889 |
|
|
# define MACH_TYPE "X86_64"
|
| 1890 |
|
|
# define ALIGNMENT 8
|
| 1891 |
|
|
# define CPP_WORDSZ 64
|
| 1892 |
|
|
# ifndef HBLKSIZE
|
| 1893 |
|
|
# define HBLKSIZE 4096
|
| 1894 |
|
|
# endif
|
| 1895 |
|
|
# define CACHE_LINE_SIZE 64
|
| 1896 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 1897 |
|
|
# ifdef LINUX
|
| 1898 |
|
|
# define OS_TYPE "LINUX"
|
| 1899 |
|
|
# define LINUX_STACKBOTTOM
|
| 1900 |
|
|
# if !defined(GC_LINUX_THREADS) || !defined(REDIRECT_MALLOC)
|
| 1901 |
|
|
# define MPROTECT_VDB
|
| 1902 |
|
|
# else
|
| 1903 |
|
|
/* We seem to get random errors in incremental mode, */
|
| 1904 |
|
|
/* possibly because Linux threads is itself a malloc client */
|
| 1905 |
|
|
/* and can't deal with the signals. */
|
| 1906 |
|
|
# endif
|
| 1907 |
|
|
# ifdef __ELF__
|
| 1908 |
|
|
# define DYNAMIC_LOADING
|
| 1909 |
|
|
# ifdef UNDEFINED /* includes ro data */
|
| 1910 |
|
|
extern int _etext[];
|
| 1911 |
|
|
# define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff))
|
| 1912 |
|
|
# endif
|
| 1913 |
|
|
# include <features.h>
|
| 1914 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1915 |
|
|
extern int _end[];
|
| 1916 |
|
|
# define DATAEND (_end)
|
| 1917 |
|
|
# else
|
| 1918 |
|
|
extern int etext[];
|
| 1919 |
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
| 1920 |
|
|
# endif
|
| 1921 |
|
|
# if defined(__GNUC__) && __GNUC >= 3
|
| 1922 |
|
|
# define PREFETCH(x) __builtin_prefetch((x), 0, 0)
|
| 1923 |
|
|
# define PREFETCH_FOR_WRITE(x) __builtin_prefetch((x), 1)
|
| 1924 |
|
|
# endif
|
| 1925 |
|
|
# endif
|
| 1926 |
|
|
# ifdef NETBSD
|
| 1927 |
|
|
# define OS_TYPE "NETBSD"
|
| 1928 |
|
|
# ifdef __ELF__
|
| 1929 |
|
|
# define DYNAMIC_LOADING
|
| 1930 |
|
|
# endif
|
| 1931 |
|
|
# define HEURISTIC2
|
| 1932 |
|
|
extern char etext[];
|
| 1933 |
|
|
# define SEARCH_FOR_DATA_START
|
| 1934 |
|
|
# endif
|
| 1935 |
|
|
# endif
|
| 1936 |
|
|
|
| 1937 |
|
|
#if defined(LINUX) && defined(USE_MMAP)
|
| 1938 |
|
|
/* The kernel may do a somewhat better job merging mappings etc. */
|
| 1939 |
|
|
/* with anonymous mappings. */
|
| 1940 |
|
|
# define USE_MMAP_ANON
|
| 1941 |
|
|
#endif
|
| 1942 |
|
|
|
| 1943 |
|
|
#if defined(LINUX) && defined(REDIRECT_MALLOC)
|
| 1944 |
|
|
/* Rld appears to allocate some memory with its own allocator, and */
|
| 1945 |
|
|
/* some through malloc, which might be redirected. To make this */
|
| 1946 |
|
|
/* work with collectable memory, we have to scan memory allocated */
|
| 1947 |
|
|
/* by rld's internal malloc. */
|
| 1948 |
|
|
# define USE_PROC_FOR_LIBRARIES
|
| 1949 |
|
|
#endif
|
| 1950 |
|
|
|
| 1951 |
|
|
# ifndef STACK_GROWS_UP
|
| 1952 |
|
|
# define STACK_GROWS_DOWN
|
| 1953 |
|
|
# endif
|
| 1954 |
|
|
|
| 1955 |
|
|
# ifndef CPP_WORDSZ
|
| 1956 |
|
|
# define CPP_WORDSZ 32
|
| 1957 |
|
|
# endif
|
| 1958 |
|
|
|
| 1959 |
|
|
# ifndef OS_TYPE
|
| 1960 |
|
|
# define OS_TYPE ""
|
| 1961 |
|
|
# endif
|
| 1962 |
|
|
|
| 1963 |
|
|
# ifndef DATAEND
|
| 1964 |
|
|
extern int end[];
|
| 1965 |
|
|
# define DATAEND (end)
|
| 1966 |
|
|
# endif
|
| 1967 |
|
|
|
| 1968 |
|
|
# if defined(SVR4) && !defined(GETPAGESIZE)
|
| 1969 |
|
|
# include <unistd.h>
|
| 1970 |
|
|
# define GETPAGESIZE() sysconf(_SC_PAGESIZE)
|
| 1971 |
|
|
# endif
|
| 1972 |
|
|
|
| 1973 |
|
|
# ifndef GETPAGESIZE
|
| 1974 |
|
|
# if defined(SUNOS5) || defined(IRIX5)
|
| 1975 |
|
|
# include <unistd.h>
|
| 1976 |
|
|
# endif
|
| 1977 |
|
|
# define GETPAGESIZE() getpagesize()
|
| 1978 |
|
|
# endif
|
| 1979 |
|
|
|
| 1980 |
|
|
# if defined(SUNOS5) || defined(DRSNX) || defined(UTS4)
|
| 1981 |
|
|
/* OS has SVR4 generic features. Probably others also qualify. */
|
| 1982 |
|
|
# define SVR4
|
| 1983 |
|
|
# endif
|
| 1984 |
|
|
|
| 1985 |
|
|
# if defined(SUNOS5) || defined(DRSNX)
|
| 1986 |
|
|
/* OS has SUNOS5 style semi-undocumented interface to dynamic */
|
| 1987 |
|
|
/* loader. */
|
| 1988 |
|
|
# define SUNOS5DL
|
| 1989 |
|
|
/* OS has SUNOS5 style signal handlers. */
|
| 1990 |
|
|
# define SUNOS5SIGS
|
| 1991 |
|
|
# endif
|
| 1992 |
|
|
|
| 1993 |
|
|
# if defined(HPUX)
|
| 1994 |
|
|
# define SUNOS5SIGS
|
| 1995 |
|
|
# endif
|
| 1996 |
|
|
|
| 1997 |
|
|
# if defined(FREEBSD) && (__FreeBSD__ >= 4)
|
| 1998 |
|
|
# define SUNOS5SIGS
|
| 1999 |
|
|
# endif
|
| 2000 |
|
|
|
| 2001 |
|
|
# if defined(SVR4) || defined(LINUX) || defined(IRIX5) || defined(HPUX) \
|
| 2002 |
|
|
|| defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) \
|
| 2003 |
|
|
|| defined(DGUX) || defined(BSD) || defined(SUNOS4) \
|
| 2004 |
|
|
|| defined(_AIX) || defined(DARWIN) || defined(OSF1)
|
| 2005 |
|
|
# define UNIX_LIKE /* Basic Unix-like system calls work. */
|
| 2006 |
|
|
# endif
|
| 2007 |
|
|
|
| 2008 |
|
|
# if CPP_WORDSZ != 32 && CPP_WORDSZ != 64
|
| 2009 |
|
|
-> bad word size
|
| 2010 |
|
|
# endif
|
| 2011 |
|
|
|
| 2012 |
|
|
# ifdef PCR
|
| 2013 |
|
|
# undef DYNAMIC_LOADING
|
| 2014 |
|
|
# undef STACKBOTTOM
|
| 2015 |
|
|
# undef HEURISTIC1
|
| 2016 |
|
|
# undef HEURISTIC2
|
| 2017 |
|
|
# undef PROC_VDB
|
| 2018 |
|
|
# undef MPROTECT_VDB
|
| 2019 |
|
|
# define PCR_VDB
|
| 2020 |
|
|
# endif
|
| 2021 |
|
|
|
| 2022 |
|
|
# ifdef SRC_M3
|
| 2023 |
|
|
/* Postponed for now. */
|
| 2024 |
|
|
# undef PROC_VDB
|
| 2025 |
|
|
# undef MPROTECT_VDB
|
| 2026 |
|
|
# endif
|
| 2027 |
|
|
|
| 2028 |
|
|
# ifdef SMALL_CONFIG
|
| 2029 |
|
|
/* Presumably not worth the space it takes. */
|
| 2030 |
|
|
# undef PROC_VDB
|
| 2031 |
|
|
# undef MPROTECT_VDB
|
| 2032 |
|
|
# endif
|
| 2033 |
|
|
|
| 2034 |
|
|
# ifdef USE_MUNMAP
|
| 2035 |
|
|
# undef MPROTECT_VDB /* Can't deal with address space holes. */
|
| 2036 |
|
|
# endif
|
| 2037 |
|
|
|
| 2038 |
|
|
# ifdef PARALLEL_MARK
|
| 2039 |
|
|
# undef MPROTECT_VDB /* For now. */
|
| 2040 |
|
|
# endif
|
| 2041 |
|
|
|
| 2042 |
|
|
# if !defined(PCR_VDB) && !defined(PROC_VDB) && !defined(MPROTECT_VDB)
|
| 2043 |
|
|
# define DEFAULT_VDB
|
| 2044 |
|
|
# endif
|
| 2045 |
|
|
|
| 2046 |
|
|
# ifndef PREFETCH
|
| 2047 |
|
|
# define PREFETCH(x)
|
| 2048 |
|
|
# define NO_PREFETCH
|
| 2049 |
|
|
# endif
|
| 2050 |
|
|
|
| 2051 |
|
|
# ifndef PREFETCH_FOR_WRITE
|
| 2052 |
|
|
# define PREFETCH_FOR_WRITE(x)
|
| 2053 |
|
|
# define NO_PREFETCH_FOR_WRITE
|
| 2054 |
|
|
# endif
|
| 2055 |
|
|
|
| 2056 |
|
|
# ifndef CACHE_LINE_SIZE
|
| 2057 |
|
|
# define CACHE_LINE_SIZE 32 /* Wild guess */
|
| 2058 |
|
|
# endif
|
| 2059 |
|
|
|
| 2060 |
|
|
# ifdef LINUX
|
| 2061 |
|
|
# define REGISTER_LIBRARIES_EARLY
|
| 2062 |
|
|
/* We sometimes use dl_iterate_phdr, which may acquire an internal */
|
| 2063 |
|
|
/* lock. This isn't safe after the world has stopped. So we must */
|
| 2064 |
|
|
/* call GC_register_dynamic_libraries before stopping the world. */
|
| 2065 |
|
|
/* For performance reasons, this may be beneficial on other */
|
| 2066 |
|
|
/* platforms as well, though it should be avoided in win32. */
|
| 2067 |
|
|
# endif /* LINUX */
|
| 2068 |
|
|
|
| 2069 |
|
|
# if defined(SEARCH_FOR_DATA_START)
|
| 2070 |
|
|
extern ptr_t GC_data_start;
|
| 2071 |
|
|
# define DATASTART GC_data_start
|
| 2072 |
|
|
# endif
|
| 2073 |
|
|
|
| 2074 |
|
|
# ifndef CLEAR_DOUBLE
|
| 2075 |
|
|
# define CLEAR_DOUBLE(x) \
|
| 2076 |
|
|
((word*)x)[0] = 0; \
|
| 2077 |
|
|
((word*)x)[1] = 0;
|
| 2078 |
|
|
# endif /* CLEAR_DOUBLE */
|
| 2079 |
|
|
|
| 2080 |
|
|
/* Internally we use GC_SOLARIS_THREADS to test for either old or pthreads. */
|
| 2081 |
|
|
# if defined(GC_SOLARIS_PTHREADS) && !defined(GC_SOLARIS_THREADS)
|
| 2082 |
|
|
# define GC_SOLARIS_THREADS
|
| 2083 |
|
|
# endif
|
| 2084 |
|
|
|
| 2085 |
|
|
# if defined(GC_IRIX_THREADS) && !defined(IRIX5)
|
| 2086 |
|
|
--> inconsistent configuration
|
| 2087 |
|
|
# endif
|
| 2088 |
|
|
# if defined(GC_LINUX_THREADS) && !defined(LINUX)
|
| 2089 |
|
|
--> inconsistent configuration
|
| 2090 |
|
|
# endif
|
| 2091 |
|
|
# if defined(GC_SOLARIS_THREADS) && !defined(SUNOS5)
|
| 2092 |
|
|
--> inconsistent configuration
|
| 2093 |
|
|
# endif
|
| 2094 |
|
|
# if defined(GC_HPUX_THREADS) && !defined(HPUX)
|
| 2095 |
|
|
--> inconsistent configuration
|
| 2096 |
|
|
# endif
|
| 2097 |
|
|
# if defined(GC_AIX_THREADS) && !defined(_AIX)
|
| 2098 |
|
|
--> inconsistent configuration
|
| 2099 |
|
|
# endif
|
| 2100 |
|
|
# if defined(GC_WIN32_THREADS) && !defined(MSWIN32) && !defined(CYGWIN32)
|
| 2101 |
|
|
--> inconsistent configuration
|
| 2102 |
|
|
# endif
|
| 2103 |
|
|
|
| 2104 |
|
|
# if defined(PCR) || defined(SRC_M3) || \
|
| 2105 |
|
|
defined(GC_SOLARIS_THREADS) || defined(GC_WIN32_THREADS) || \
|
| 2106 |
|
|
defined(GC_PTHREADS)
|
| 2107 |
|
|
# define THREADS
|
| 2108 |
|
|
# endif
|
| 2109 |
|
|
|
| 2110 |
|
|
# if defined(HP_PA) || defined(M88K) || defined(POWERPC) && !defined(DARWIN) \
|
| 2111 |
|
|
|| defined(LINT) || defined(MSWINCE) || defined(ARM32) || defined(CRIS) \
|
| 2112 |
|
|
|| (defined(I386) && defined(__LCC__))
|
| 2113 |
|
|
/* Use setjmp based hack to mark from callee-save registers. */
|
| 2114 |
|
|
/* The define should move to the individual platform */
|
| 2115 |
|
|
/* descriptions. */
|
| 2116 |
|
|
# define USE_GENERIC_PUSH_REGS
|
| 2117 |
|
|
# endif
|
| 2118 |
|
|
|
| 2119 |
|
|
# if defined(MSWINCE)
|
| 2120 |
|
|
# define NO_GETENV
|
| 2121 |
|
|
# endif
|
| 2122 |
|
|
|
| 2123 |
|
|
# if defined(SPARC)
|
| 2124 |
|
|
# define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */
|
| 2125 |
|
|
/* include assembly code to do it well. */
|
| 2126 |
|
|
# endif
|
| 2127 |
|
|
|
| 2128 |
|
|
/* Can we save call chain in objects for debugging? */
|
| 2129 |
|
|
/* SET NFRAMES (# of saved frames) and NARGS (#of args for each */
|
| 2130 |
|
|
/* frame) to reasonable values for the platform. */
|
| 2131 |
|
|
/* Set SAVE_CALL_CHAIN if we can. SAVE_CALL_COUNT can be specified */
|
| 2132 |
|
|
/* at build time, though we feel free to adjust it slightly. */
|
| 2133 |
|
|
/* Define NEED_CALLINFO if we either save the call stack or */
|
| 2134 |
|
|
/* GC_ADD_CALLER is defined. */
|
| 2135 |
|
|
/* GC_CAN_SAVE_CALL_STACKS is set in gc.h. */
|
| 2136 |
|
|
|
| 2137 |
|
|
#if defined(SPARC)
|
| 2138 |
|
|
# define CAN_SAVE_CALL_ARGS
|
| 2139 |
|
|
#endif
|
| 2140 |
|
|
#if (defined(I386) || defined(X86_64)) && defined(LINUX)
|
| 2141 |
|
|
/* SAVE_CALL_CHAIN is supported if the code is compiled to save */
|
| 2142 |
|
|
/* frame pointers by default, i.e. no -fomit-frame-pointer flag. */
|
| 2143 |
|
|
# define CAN_SAVE_CALL_ARGS
|
| 2144 |
|
|
#endif
|
| 2145 |
|
|
|
| 2146 |
|
|
# if defined(SAVE_CALL_COUNT) && !defined(GC_ADD_CALLER) \
|
| 2147 |
|
|
&& defined(GC_CAN_SAVE_CALL_STACKS)
|
| 2148 |
|
|
# define SAVE_CALL_CHAIN
|
| 2149 |
|
|
# endif
|
| 2150 |
|
|
# ifdef SAVE_CALL_CHAIN
|
| 2151 |
|
|
# if defined(SAVE_CALL_NARGS) && defined(CAN_SAVE_CALL_ARGS)
|
| 2152 |
|
|
# define NARGS SAVE_CALL_NARGS
|
| 2153 |
|
|
# else
|
| 2154 |
|
|
# define NARGS 0 /* Number of arguments to save for each call. */
|
| 2155 |
|
|
# endif
|
| 2156 |
|
|
# endif
|
| 2157 |
|
|
# ifdef SAVE_CALL_CHAIN
|
| 2158 |
|
|
# ifndef SAVE_CALL_COUNT
|
| 2159 |
|
|
# define NFRAMES 6 /* Number of frames to save. Even for */
|
| 2160 |
|
|
/* alignment reasons. */
|
| 2161 |
|
|
# else
|
| 2162 |
|
|
# define NFRAMES ((SAVE_CALL_COUNT + 1) & ~1)
|
| 2163 |
|
|
# endif
|
| 2164 |
|
|
# define NEED_CALLINFO
|
| 2165 |
|
|
# endif /* SAVE_CALL_CHAIN */
|
| 2166 |
|
|
# ifdef GC_ADD_CALLER
|
| 2167 |
|
|
# define NFRAMES 1
|
| 2168 |
|
|
# define NARGS 0
|
| 2169 |
|
|
# define NEED_CALLINFO
|
| 2170 |
|
|
# endif
|
| 2171 |
|
|
|
| 2172 |
|
|
# if defined(MAKE_BACK_GRAPH) && !defined(DBG_HDRS_ALL)
|
| 2173 |
|
|
# define DBG_HDRS_ALL
|
| 2174 |
|
|
# endif
|
| 2175 |
|
|
|
| 2176 |
|
|
# if defined(POINTER_MASK) && !defined(POINTER_SHIFT)
|
| 2177 |
|
|
# define POINTER_SHIFT 0
|
| 2178 |
|
|
# endif
|
| 2179 |
|
|
|
| 2180 |
|
|
# if defined(POINTER_SHIFT) && !defined(POINTER_MASK)
|
| 2181 |
|
|
# define POINTER_MASK ((GC_word)(-1))
|
| 2182 |
|
|
# endif
|
| 2183 |
|
|
|
| 2184 |
|
|
# if !defined(FIXUP_POINTER) && defined(POINTER_MASK)
|
| 2185 |
|
|
# define FIXUP_POINTER(p) (p) = ((p) & (POINTER_MASK) << POINTER_SHIFT)
|
| 2186 |
|
|
# endif
|
| 2187 |
|
|
|
| 2188 |
|
|
# if defined(FIXUP_POINTER)
|
| 2189 |
|
|
# define NEED_FIXUP_POINTER 1
|
| 2190 |
|
|
# else
|
| 2191 |
|
|
# define NEED_FIXUP_POINTER 0
|
| 2192 |
|
|
# define FIXUP_POINTER(p)
|
| 2193 |
|
|
# endif
|
| 2194 |
|
|
|
| 2195 |
|
|
#ifdef GC_PRIVATE_H
|
| 2196 |
|
|
/* This relies on some type definitions from gc_priv.h, from */
|
| 2197 |
|
|
/* where it's normally included. */
|
| 2198 |
|
|
/* */
|
| 2199 |
|
|
/* How to get heap memory from the OS: */
|
| 2200 |
|
|
/* Note that sbrk()-like allocation is preferred, since it */
|
| 2201 |
|
|
/* usually makes it possible to merge consecutively allocated */
|
| 2202 |
|
|
/* chunks. It also avoids unintented recursion with */
|
| 2203 |
|
|
/* -DREDIRECT_MALLOC. */
|
| 2204 |
|
|
/* GET_MEM() returns a HLKSIZE aligned chunk. */
|
| 2205 |
|
|
/* 0 is taken to mean failure. */
|
| 2206 |
|
|
/* In the case os USE_MMAP, the argument must also be a */
|
| 2207 |
|
|
/* physical page size. */
|
| 2208 |
|
|
/* GET_MEM is currently not assumed to retrieve 0 filled space, */
|
| 2209 |
|
|
/* though we should perhaps take advantage of the case in which */
|
| 2210 |
|
|
/* does. */
|
| 2211 |
|
|
struct hblk; /* See gc_priv.h. */
|
| 2212 |
|
|
# ifdef PCR
|
| 2213 |
|
|
char * real_malloc();
|
| 2214 |
|
|
# define GET_MEM(bytes) HBLKPTR(real_malloc((size_t)bytes + GC_page_size) \
|
| 2215 |
|
|
+ GC_page_size-1)
|
| 2216 |
|
|
# else
|
| 2217 |
|
|
# ifdef OS2
|
| 2218 |
|
|
void * os2_alloc(size_t bytes);
|
| 2219 |
|
|
# define GET_MEM(bytes) HBLKPTR((ptr_t)os2_alloc((size_t)bytes \
|
| 2220 |
|
|
+ GC_page_size) \
|
| 2221 |
|
|
+ GC_page_size-1)
|
| 2222 |
|
|
# else
|
| 2223 |
|
|
# if defined(NEXT) || defined(DOS4GW) || \
|
| 2224 |
|
|
(defined(AMIGA) && !defined(GC_AMIGA_FASTALLOC)) || \
|
| 2225 |
|
|
(defined(SUNOS5) && !defined(USE_MMAP))
|
| 2226 |
|
|
# define GET_MEM(bytes) HBLKPTR((size_t) \
|
| 2227 |
|
|
calloc(1, (size_t)bytes + GC_page_size) \
|
| 2228 |
|
|
+ GC_page_size-1)
|
| 2229 |
|
|
# else
|
| 2230 |
|
|
# ifdef MSWIN32
|
| 2231 |
|
|
extern ptr_t GC_win32_get_mem();
|
| 2232 |
|
|
# define GET_MEM(bytes) (struct hblk *)GC_win32_get_mem(bytes)
|
| 2233 |
|
|
# else
|
| 2234 |
|
|
# ifdef MACOS
|
| 2235 |
|
|
# if defined(USE_TEMPORARY_MEMORY)
|
| 2236 |
|
|
extern Ptr GC_MacTemporaryNewPtr(size_t size,
|
| 2237 |
|
|
Boolean clearMemory);
|
| 2238 |
|
|
# define GET_MEM(bytes) HBLKPTR( \
|
| 2239 |
|
|
GC_MacTemporaryNewPtr(bytes + GC_page_size, true) \
|
| 2240 |
|
|
+ GC_page_size-1)
|
| 2241 |
|
|
# else
|
| 2242 |
|
|
# define GET_MEM(bytes) HBLKPTR( \
|
| 2243 |
|
|
NewPtrClear(bytes + GC_page_size) + GC_page_size-1)
|
| 2244 |
|
|
# endif
|
| 2245 |
|
|
# else
|
| 2246 |
|
|
# ifdef MSWINCE
|
| 2247 |
|
|
extern ptr_t GC_wince_get_mem();
|
| 2248 |
|
|
# define GET_MEM(bytes) (struct hblk *)GC_wince_get_mem(bytes)
|
| 2249 |
|
|
# else
|
| 2250 |
|
|
# if defined(AMIGA) && defined(GC_AMIGA_FASTALLOC)
|
| 2251 |
|
|
extern void *GC_amiga_get_mem(size_t size);
|
| 2252 |
|
|
# define GET_MEM(bytes) HBLKPTR((size_t) \
|
| 2253 |
|
|
GC_amiga_get_mem((size_t)bytes + GC_page_size) \
|
| 2254 |
|
|
+ GC_page_size-1)
|
| 2255 |
|
|
# else
|
| 2256 |
|
|
extern ptr_t GC_unix_get_mem();
|
| 2257 |
|
|
# define GET_MEM(bytes) (struct hblk *)GC_unix_get_mem(bytes)
|
| 2258 |
|
|
# endif
|
| 2259 |
|
|
# endif
|
| 2260 |
|
|
# endif
|
| 2261 |
|
|
# endif
|
| 2262 |
|
|
# endif
|
| 2263 |
|
|
# endif
|
| 2264 |
|
|
# endif
|
| 2265 |
|
|
|
| 2266 |
|
|
#endif /* GC_PRIVATE_H */
|
| 2267 |
|
|
|
| 2268 |
|
|
# endif /* GCCONFIG_H */
|
