28e2ff77f2
PR boehm-gc/21940 PR boehm-gc/21942 * configure.ac (GC_SOLARIS_THREADS): Don't define on *-*-solaris*. Use alternate thread library in /usr/lib/lwp. * configure: Regenerate. * dyn_load.c: Use GC_SOLARIS_PTHREADS. * include/gc_config_macros.h (GC_SOLARIS_THREADS): Don't define. * include/private/gcconfig.h: Handle 64-bit Solaris 2/x86. (GC_SOLARIS_THREADS): Don't define. * include/private/solaris_threads.h: Remove. * pthread_support.c (GC_thr_init) [GC_SOLARIS_PTHREADS]: Determine GC_nprocs via sysconf(). * Makefile.am (libgcjgc_la_SOURCES): Remove solaris_pthreads.c and solaris_threads.c. (gctest_LDADD): Use THREADLIBS instead of THREADDLLIBS. * Makefile.in: Regenerate. * solaris_pthreads.c: Remove. * solaris_threads.c: Remove. From-SVN: r126211
2415 lines
74 KiB
C
2415 lines
74 KiB
C
/*
|
|
* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
|
|
* Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
|
|
* Copyright (c) 1996 by Silicon Graphics. All rights reserved.
|
|
* Copyright (c) 2000-2004 Hewlett-Packard Development Company, L.P.
|
|
*
|
|
* THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
|
|
* OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
|
|
*
|
|
* Permission is hereby granted to use or copy this program
|
|
* for any purpose, provided the above notices are retained on all copies.
|
|
* Permission to modify the code and to distribute modified code is granted,
|
|
* provided the above notices are retained, and a notice that the code was
|
|
* modified is included with the above copyright notice.
|
|
*/
|
|
|
|
/*
|
|
* This header is private to the gc. It is almost always included from
|
|
* gc_priv.h. However it is possible to include it by itself if just the
|
|
* configuration macros are needed. In that
|
|
* case, a few declarations relying on types declared in gc_priv.h will be
|
|
* omitted.
|
|
*/
|
|
|
|
#ifndef GCCONFIG_H
|
|
|
|
# define GCCONFIG_H
|
|
|
|
# ifndef GC_PRIVATE_H
|
|
/* Fake ptr_t declaration, just to avoid compilation errors. */
|
|
/* This avoids many instances if "ifndef GC_PRIVATE_H" below. */
|
|
typedef struct GC_undefined_struct * ptr_t;
|
|
# endif
|
|
|
|
/* Machine dependent parameters. Some tuning parameters can be found */
|
|
/* near the top of gc_private.h. */
|
|
|
|
/* Machine specific parts contributed by various people. See README file. */
|
|
|
|
/* First a unified test for Linux: */
|
|
# if defined(linux) || defined(__linux__)
|
|
# ifndef LINUX
|
|
# define LINUX
|
|
# endif
|
|
# endif
|
|
|
|
/* And one for NetBSD: */
|
|
# if defined(__NetBSD__)
|
|
# define NETBSD
|
|
# endif
|
|
|
|
/* And one for OpenBSD: */
|
|
# if defined(__OpenBSD__)
|
|
# define OPENBSD
|
|
# endif
|
|
|
|
/* And one for FreeBSD: */
|
|
# if ( defined(__FreeBSD__) || defined(__FreeBSD_kernel__) ) && !defined(FREEBSD)
|
|
# define FREEBSD
|
|
# endif
|
|
|
|
/* Determine the machine type: */
|
|
# if defined(__arm__) || defined(__thumb__)
|
|
# define ARM32
|
|
# if !defined(LINUX) && !defined(NETBSD)
|
|
# define NOSYS
|
|
# define mach_type_known
|
|
# endif
|
|
# endif
|
|
# if defined(sun) && defined(mc68000)
|
|
# define M68K
|
|
# define SUNOS4
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(hp9000s300)
|
|
# define M68K
|
|
# define HP
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(OPENBSD) && defined(m68k)
|
|
# define M68K
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(OPENBSD) && defined(__sparc__)
|
|
# define SPARC
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(NETBSD) && (defined(m68k) || defined(__m68k__))
|
|
# define M68K
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(NETBSD) && defined(__powerpc__)
|
|
# define POWERPC
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(NETBSD) && (defined(__arm32__) || defined(__arm__))
|
|
# define ARM32
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(NETBSD) && defined(__sh__)
|
|
# define SH
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(vax)
|
|
# define VAX
|
|
# ifdef ultrix
|
|
# define ULTRIX
|
|
# else
|
|
# define BSD
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__NetBSD__) && defined(__vax__)
|
|
# define VAX
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(mips) || defined(__mips) || defined(_mips)
|
|
# define MIPS
|
|
# if defined(nec_ews) || defined(_nec_ews)
|
|
# define EWS4800
|
|
# endif
|
|
# if !defined(LINUX) && !defined(EWS4800) && !defined(NETBSD)
|
|
# if defined(ultrix) || defined(__ultrix)
|
|
# define ULTRIX
|
|
# else
|
|
# if defined(_SYSTYPE_SVR4) || defined(SYSTYPE_SVR4) \
|
|
|| defined(__SYSTYPE_SVR4__)
|
|
# define IRIX5 /* or IRIX 6.X */
|
|
# else
|
|
# define RISCOS /* or IRIX 4.X */
|
|
# endif
|
|
# endif
|
|
# endif /* !LINUX */
|
|
# if defined(__NetBSD__) && defined(__MIPSEL__)
|
|
# undef ULTRIX
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(DGUX) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# ifndef _USING_DGUX
|
|
# define _USING_DGUX
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(sequent) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define SEQUENT
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(sun) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define SUNOS5
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(sun) && defined(__amd64)
|
|
# define X86_64
|
|
# define SUNOS5
|
|
# define mach_type_known
|
|
# endif
|
|
# if (defined(__OS2__) || defined(__EMX__)) && defined(__32BIT__)
|
|
# define I386
|
|
# define OS2
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(ibm032)
|
|
# define RT
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(sun) && (defined(sparc) || defined(__sparc))
|
|
# define SPARC
|
|
/* Test for SunOS 5.x */
|
|
# include <errno.h>
|
|
# ifdef ECHRNG
|
|
# define SUNOS5
|
|
# else
|
|
# define SUNOS4
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(sparc) && defined(unix) && !defined(sun) && !defined(linux) \
|
|
&& !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__)
|
|
# define SPARC
|
|
# define DRSNX
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_IBMR2)
|
|
# define RS6000
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__NetBSD__) && defined(__sparc__)
|
|
# define SPARC
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_M_XENIX) && defined(_M_SYSV) && defined(_M_I386)
|
|
/* The above test may need refinement */
|
|
# define I386
|
|
# if defined(_SCO_ELF)
|
|
# define SCO_ELF
|
|
# else
|
|
# define SCO
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_AUX_SOURCE)
|
|
# define M68K
|
|
# define SYSV
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) \
|
|
|| defined(hppa) || defined(__hppa__)
|
|
# define HP_PA
|
|
# if !defined(LINUX) && !defined(HPUX)
|
|
# define HPUX
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__ia64) && defined(_HPUX_SOURCE)
|
|
# define IA64
|
|
# ifndef HPUX
|
|
# define HPUX
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__BEOS__) && defined(_X86_)
|
|
# define I386
|
|
# define BEOS
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && defined(__x86_64__)
|
|
# define X86_64
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && (defined(__ia64__) || defined(__ia64))
|
|
# define IA64
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && defined(__arm__)
|
|
# define ARM32
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && defined(__cris__)
|
|
# ifndef CRIS
|
|
# define CRIS
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && (defined(powerpc) || defined(__powerpc__) || \
|
|
defined(powerpc64) || defined(__powerpc64__))
|
|
# define POWERPC
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(FREEBSD) && (defined(powerpc) || defined(__powerpc__))
|
|
# define POWERPC
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && defined(__mc68000__)
|
|
# define M68K
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && (defined(sparc) || defined(__sparc__))
|
|
# define SPARC
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && defined(__arm__)
|
|
# define ARM32
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && defined(__sh__)
|
|
# define SH
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && defined(__m32r__)
|
|
# define M32R
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__alpha) || defined(__alpha__)
|
|
# define ALPHA
|
|
# if !defined(LINUX) && !defined(NETBSD) && !defined(OPENBSD) && !defined(FREEBSD)
|
|
# define OSF1 /* a.k.a Digital Unix */
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_AMIGA) && !defined(AMIGA)
|
|
# define AMIGA
|
|
# endif
|
|
# ifdef AMIGA
|
|
# define M68K
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(THINK_C) || defined(__MWERKS__) && !defined(__powerc)
|
|
# define M68K
|
|
# define MACOS
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__MWERKS__) && defined(__powerc) && !defined(__MACH__)
|
|
# define POWERPC
|
|
# define MACOS
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(macosx) || (defined(__APPLE__) && defined(__MACH__))
|
|
# define DARWIN
|
|
# if defined(__ppc__) || defined(__ppc64__)
|
|
# define POWERPC
|
|
# define mach_type_known
|
|
# elif defined(__x86_64__)
|
|
# define X86_64
|
|
# define mach_type_known
|
|
# elif defined(__i386__)
|
|
# define I386
|
|
# define mach_type_known
|
|
# endif
|
|
# endif
|
|
# if defined(NeXT) && defined(mc68000)
|
|
# define M68K
|
|
# define NEXT
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(NeXT) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define NEXT
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__OpenBSD__) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define OPENBSD
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(FREEBSD) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(FREEBSD) && defined(__x86_64__)
|
|
# define X86_64
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__NetBSD__) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__NetBSD__) && defined(__x86_64__)
|
|
# define X86_64
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(FREEBSD) && defined(__sparc__)
|
|
# define SPARC
|
|
# define mach_type_known
|
|
#endif
|
|
# if defined(bsdi) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define BSDI
|
|
# define mach_type_known
|
|
# endif
|
|
# if !defined(mach_type_known) && defined(__386BSD__)
|
|
# define I386
|
|
# define THREE86BSD
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_CX_UX) && defined(_M88K)
|
|
# define M88K
|
|
# define CX_UX
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(DGUX) && defined(m88k)
|
|
# define M88K
|
|
/* DGUX defined */
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_WIN32_WCE)
|
|
/* SH3, SH4, MIPS already defined for corresponding architectures */
|
|
# if defined(SH3) || defined(SH4)
|
|
# define SH
|
|
# endif
|
|
# if defined(x86)
|
|
# define I386
|
|
# endif
|
|
# if defined(ARM)
|
|
# define ARM32
|
|
# endif
|
|
# define MSWINCE
|
|
# define mach_type_known
|
|
# else
|
|
# if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) \
|
|
|| defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__)
|
|
# define I386
|
|
# define MSWIN32 /* or Win32s */
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_MSC_VER) && defined(_M_IA64)
|
|
# define IA64
|
|
# define MSWIN32 /* Really win64, but we don't treat 64-bit */
|
|
/* variants as a differnt platform. */
|
|
# endif
|
|
# endif
|
|
# if defined(__DJGPP__)
|
|
# define I386
|
|
# ifndef DJGPP
|
|
# define DJGPP /* MSDOS running the DJGPP port of GCC */
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__CYGWIN32__) || defined(__CYGWIN__)
|
|
# define I386
|
|
# define CYGWIN32
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__MINGW32__)
|
|
# define I386
|
|
# define MSWIN32
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__BORLANDC__)
|
|
# define I386
|
|
# define MSWIN32
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_UTS) && !defined(mach_type_known)
|
|
# define S370
|
|
# define UTS4
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__pj__)
|
|
# define PJ
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__embedded__) && defined(PPC)
|
|
# define POWERPC
|
|
# define NOSYS
|
|
# define mach_type_known
|
|
# endif
|
|
/* Ivan Demakov */
|
|
# if defined(__WATCOMC__) && defined(__386__)
|
|
# define I386
|
|
# if !defined(OS2) && !defined(MSWIN32) && !defined(DOS4GW)
|
|
# if defined(__OS2__)
|
|
# define OS2
|
|
# else
|
|
# if defined(__WINDOWS_386__) || defined(__NT__)
|
|
# define MSWIN32
|
|
# else
|
|
# define DOS4GW
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__s390__) && defined(LINUX)
|
|
# define S390
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__GNU__)
|
|
# if defined(__i386__)
|
|
/* The Debian Hurd running on generic PC */
|
|
# define HURD
|
|
# define I386
|
|
# define mach_type_known
|
|
# endif
|
|
# endif
|
|
|
|
/* Feel free to add more clauses here */
|
|
|
|
/* Or manually define the machine type here. A machine type is */
|
|
/* characterized by the architecture. Some */
|
|
/* machine types are further subdivided by OS. */
|
|
/* the macros ULTRIX, RISCOS, and BSD to distinguish. */
|
|
/* Note that SGI IRIX is treated identically to RISCOS. */
|
|
/* SYSV on an M68K actually means A/UX. */
|
|
/* The distinction in these cases is usually the stack starting address */
|
|
# ifndef mach_type_known
|
|
--> unknown machine type
|
|
# endif
|
|
/* Mapping is: M68K ==> Motorola 680X0 */
|
|
/* (SUNOS4,HP,NEXT, and SYSV (A/UX), */
|
|
/* MACOS and AMIGA variants) */
|
|
/* I386 ==> Intel 386 */
|
|
/* (SEQUENT, OS2, SCO, LINUX, NETBSD, */
|
|
/* FREEBSD, THREE86BSD, MSWIN32, */
|
|
/* BSDI,SUNOS5, NEXT, other variants) */
|
|
/* NS32K ==> Encore Multimax */
|
|
/* MIPS ==> R2000 or R3000 */
|
|
/* (RISCOS, ULTRIX variants) */
|
|
/* VAX ==> DEC VAX */
|
|
/* (BSD, ULTRIX variants) */
|
|
/* RS6000 ==> IBM RS/6000 AIX3.X */
|
|
/* RT ==> IBM PC/RT */
|
|
/* HP_PA ==> HP9000/700 & /800 */
|
|
/* HP/UX, LINUX */
|
|
/* SPARC ==> SPARC v7/v8/v9 */
|
|
/* (SUNOS4, SUNOS5, LINUX, */
|
|
/* DRSNX variants) */
|
|
/* ALPHA ==> DEC Alpha */
|
|
/* (OSF1 and LINUX variants) */
|
|
/* M88K ==> Motorola 88XX0 */
|
|
/* (CX_UX and DGUX) */
|
|
/* S370 ==> 370-like machine */
|
|
/* running Amdahl UTS4 */
|
|
/* S390 ==> 390-like machine */
|
|
/* running LINUX */
|
|
/* ARM32 ==> Intel StrongARM */
|
|
/* IA64 ==> Intel IPF */
|
|
/* (e.g. Itanium) */
|
|
/* (LINUX and HPUX) */
|
|
/* SH ==> Hitachi SuperH */
|
|
/* (LINUX & MSWINCE) */
|
|
/* X86_64 ==> AMD x86-64 */
|
|
/* POWERPC ==> IBM/Apple PowerPC */
|
|
/* (MACOS(<=9),DARWIN(incl.MACOSX),*/
|
|
/* LINUX, NETBSD, NOSYS variants) */
|
|
/* Handles 32 and 64-bit variants. */
|
|
/* AIX should be handled here, but */
|
|
/* that's called an RS6000. */
|
|
/* CRIS ==> Axis Etrax */
|
|
/* M32R ==> Renesas M32R */
|
|
|
|
|
|
/*
|
|
* For each architecture and OS, the following need to be defined:
|
|
*
|
|
* CPP_WORDSZ is a simple integer constant representing the word size.
|
|
* in bits. We assume byte addressibility, where a byte has 8 bits.
|
|
* We also assume CPP_WORDSZ is either 32 or 64.
|
|
* (We care about the length of pointers, not hardware
|
|
* bus widths. Thus a 64 bit processor with a C compiler that uses
|
|
* 32 bit pointers should use CPP_WORDSZ of 32, not 64. Default is 32.)
|
|
*
|
|
* MACH_TYPE is a string representation of the machine type.
|
|
* OS_TYPE is analogous for the OS.
|
|
*
|
|
* ALIGNMENT is the largest N, such that
|
|
* all pointer are guaranteed to be aligned on N byte boundaries.
|
|
* defining it to be 1 will always work, but perform poorly.
|
|
*
|
|
* DATASTART is the beginning of the data segment.
|
|
* On some platforms SEARCH_FOR_DATA_START is defined.
|
|
* SEARCH_FOR_DATASTART will cause GC_data_start to
|
|
* be set to an address determined by accessing data backwards from _end
|
|
* until an unmapped page is found. DATASTART will be defined to be
|
|
* GC_data_start.
|
|
* On UNIX-like systems, the collector will scan the area between DATASTART
|
|
* and DATAEND for root pointers.
|
|
*
|
|
* DATAEND, if not `end' where `end' is defined as ``extern int end[];''.
|
|
* RTH suggests gaining access to linker script synth'd values with
|
|
* this idiom instead of `&end' where `end' is defined as ``extern int end;'' .
|
|
* Otherwise, ``GCC will assume these are in .sdata/.sbss'' and it will, e.g.,
|
|
* cause failures on alpha*-*-* with ``-msmall-data or -fpic'' or mips-*-*
|
|
* without any special options.
|
|
*
|
|
* ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice
|
|
* the pointer size.
|
|
*
|
|
* STACKBOTTOM is the cool end of the stack, which is usually the
|
|
* highest address in the stack.
|
|
* Under PCR or OS/2, we have other ways of finding thread stacks.
|
|
* For each machine, the following should:
|
|
* 1) define STACK_GROWS_UP if the stack grows toward higher addresses, and
|
|
* 2) define exactly one of
|
|
* STACKBOTTOM (should be defined to be an expression)
|
|
* LINUX_STACKBOTTOM
|
|
* HEURISTIC1
|
|
* HEURISTIC2
|
|
* If STACKBOTTOM is defined, then it's value will be used directly as the
|
|
* stack base. If LINUX_STACKBOTTOM is defined, then it will be determined
|
|
* with a method appropriate for most Linux systems. Currently we look
|
|
* first for __libc_stack_end, and if that fails read it from /proc.
|
|
* If either of the last two macros are defined, then STACKBOTTOM is computed
|
|
* during collector startup using one of the following two heuristics:
|
|
* HEURISTIC1: Take an address inside GC_init's frame, and round it up to
|
|
* the next multiple of STACK_GRAN.
|
|
* HEURISTIC2: Take an address inside GC_init's frame, increment it repeatedly
|
|
* in small steps (decrement if STACK_GROWS_UP), and read the value
|
|
* at each location. Remember the value when the first
|
|
* Segmentation violation or Bus error is signalled. Round that
|
|
* to the nearest plausible page boundary, and use that instead
|
|
* of STACKBOTTOM.
|
|
*
|
|
* Gustavo Rodriguez-Rivera points out that on most (all?) Unix machines,
|
|
* the value of environ is a pointer that can serve as STACKBOTTOM.
|
|
* I expect that HEURISTIC2 can be replaced by this approach, which
|
|
* interferes far less with debugging. However it has the disadvantage
|
|
* that it's confused by a putenv call before the collector is initialized.
|
|
* This could be dealt with by intercepting putenv ...
|
|
*
|
|
* If no expression for STACKBOTTOM can be found, and neither of the above
|
|
* heuristics are usable, the collector can still be used with all of the above
|
|
* undefined, provided one of the following is done:
|
|
* 1) GC_mark_roots can be changed to somehow mark from the correct stack(s)
|
|
* without reference to STACKBOTTOM. This is appropriate for use in
|
|
* conjunction with thread packages, since there will be multiple stacks.
|
|
* (Allocating thread stacks in the heap, and treating them as ordinary
|
|
* heap data objects is also possible as a last resort. However, this is
|
|
* likely to introduce significant amounts of excess storage retention
|
|
* unless the dead parts of the thread stacks are periodically cleared.)
|
|
* 2) Client code may set GC_stackbottom before calling any GC_ routines.
|
|
* If the author of the client code controls the main program, this is
|
|
* easily accomplished by introducing a new main program, setting
|
|
* GC_stackbottom to the address of a local variable, and then calling
|
|
* the original main program. The new main program would read something
|
|
* like:
|
|
*
|
|
* # include "gc_private.h"
|
|
*
|
|
* main(argc, argv, envp)
|
|
* int argc;
|
|
* char **argv, **envp;
|
|
* {
|
|
* int dummy;
|
|
*
|
|
* GC_stackbottom = (ptr_t)(&dummy);
|
|
* return(real_main(argc, argv, envp));
|
|
* }
|
|
*
|
|
*
|
|
* Each architecture may also define the style of virtual dirty bit
|
|
* implementation to be used:
|
|
* MPROTECT_VDB: Write protect the heap and catch faults.
|
|
* PROC_VDB: Use the SVR4 /proc primitives to read dirty bits.
|
|
*
|
|
* An architecture may define DYNAMIC_LOADING if dynamic_load.c
|
|
* defined GC_register_dynamic_libraries() for the architecture.
|
|
*
|
|
* An architecture may define PREFETCH(x) to preload the cache with *x.
|
|
* This defaults to a no-op.
|
|
*
|
|
* PREFETCH_FOR_WRITE(x) is used if *x is about to be written.
|
|
*
|
|
* An architecture may also define CLEAR_DOUBLE(x) to be a fast way to
|
|
* clear the two words at GC_malloc-aligned address x. By default,
|
|
* word stores of 0 are used instead.
|
|
*
|
|
* HEAP_START may be defined as the initial address hint for mmap-based
|
|
* allocation.
|
|
*/
|
|
|
|
/* If we are using a recent version of gcc, we can use __builtin_unwind_init()
|
|
* to push the relevant registers onto the stack. This generally makes
|
|
* USE_GENERIC_PUSH_REGS the preferred approach for marking from registers.
|
|
*/
|
|
# if defined(__GNUC__) && ((__GNUC__ >= 3) || \
|
|
(__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) \
|
|
&& !defined(__INTEL_COMPILER) \
|
|
&& !defined(__PATHCC__)
|
|
# define HAVE_BUILTIN_UNWIND_INIT
|
|
# endif
|
|
|
|
# define STACK_GRAN 0x1000000
|
|
# ifdef M68K
|
|
# define MACH_TYPE "M68K"
|
|
# define ALIGNMENT 2
|
|
# ifdef OPENBSD
|
|
# define OS_TYPE "OPENBSD"
|
|
# define HEURISTIC2
|
|
# ifdef __ELF__
|
|
# define DATASTART GC_data_start
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
extern char etext[];
|
|
# define DATASTART ((ptr_t)(etext))
|
|
# endif
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# endif
|
|
# ifdef NETBSD
|
|
# define OS_TYPE "NETBSD"
|
|
# define HEURISTIC2
|
|
# ifdef __ELF__
|
|
# define DATASTART GC_data_start
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
extern char etext[];
|
|
# define DATASTART ((ptr_t)(etext))
|
|
# endif
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# endif
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# define USE_GENERIC_PUSH_REGS
|
|
/* We never got around to the assembly version. */
|
|
# define MPROTECT_VDB
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# include <features.h>
|
|
# if defined(__GLIBC__)&& __GLIBC__>=2
|
|
# define SEARCH_FOR_DATA_START
|
|
# else /* !GLIBC2 */
|
|
extern char **__environ;
|
|
# define DATASTART ((ptr_t)(&__environ))
|
|
/* hideous kludge: __environ is the first */
|
|
/* word in crt0.o, and delimits the start */
|
|
/* of the data segment, no matter which */
|
|
/* ld options were passed through. */
|
|
/* We could use _etext instead, but that */
|
|
/* would include .rodata, which may */
|
|
/* contain large read-only data tables */
|
|
/* that we'd rather not scan. */
|
|
# endif /* !GLIBC2 */
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# else
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
|
# endif
|
|
# endif
|
|
# ifdef SUNOS4
|
|
# define OS_TYPE "SUNOS4"
|
|
extern char etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0x1ffff) & ~0x1ffff))
|
|
# define HEURISTIC1 /* differs */
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef HP
|
|
# define OS_TYPE "HP"
|
|
extern char etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
|
# define STACKBOTTOM ((ptr_t) 0xffeffffc)
|
|
/* empirically determined. seems to work. */
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
|
|
# endif
|
|
# ifdef SYSV
|
|
# define OS_TYPE "SYSV"
|
|
extern etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \
|
|
& ~0x3fffff) \
|
|
+((word)etext & 0x1fff))
|
|
/* This only works for shared-text binaries with magic number 0413.
|
|
The other sorts of SysV binaries put the data at the end of the text,
|
|
in which case the default of etext would work. Unfortunately,
|
|
handling both would require having the magic-number available.
|
|
-- Parag
|
|
*/
|
|
# define STACKBOTTOM ((ptr_t)0xFFFFFFFE)
|
|
/* The stack starts at the top of memory, but */
|
|
/* 0x0 cannot be used as setjump_test complains */
|
|
/* that the stack direction is incorrect. Two */
|
|
/* bytes down from 0x0 should be safe enough. */
|
|
/* --Parag */
|
|
# include <sys/mmu.h>
|
|
# define GETPAGESIZE() PAGESIZE /* Is this still right? */
|
|
# endif
|
|
# ifdef AMIGA
|
|
# define OS_TYPE "AMIGA"
|
|
/* STACKBOTTOM and DATASTART handled specially */
|
|
/* in os_dep.c */
|
|
# define DATAEND /* not needed */
|
|
# define GETPAGESIZE() 4096
|
|
# endif
|
|
# ifdef MACOS
|
|
# ifndef __LOWMEM__
|
|
# include <LowMem.h>
|
|
# endif
|
|
# define OS_TYPE "MACOS"
|
|
/* see os_dep.c for details of global data segments. */
|
|
# define STACKBOTTOM ((ptr_t) LMGetCurStackBase())
|
|
# define DATAEND /* not needed */
|
|
# define GETPAGESIZE() 4096
|
|
# endif
|
|
# ifdef NEXT
|
|
# define OS_TYPE "NEXT"
|
|
# define DATASTART ((ptr_t) get_etext())
|
|
# define STACKBOTTOM ((ptr_t) 0x4000000)
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
# endif
|
|
|
|
# if defined(POWERPC)
|
|
# define MACH_TYPE "POWERPC"
|
|
# ifdef MACOS
|
|
# define ALIGNMENT 2 /* Still necessary? Could it be 4? */
|
|
# ifndef __LOWMEM__
|
|
# include <LowMem.h>
|
|
# endif
|
|
# define OS_TYPE "MACOS"
|
|
/* see os_dep.c for details of global data segments. */
|
|
# define STACKBOTTOM ((ptr_t) LMGetCurStackBase())
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
# ifdef LINUX
|
|
# if defined(__powerpc64__)
|
|
# define ALIGNMENT 8
|
|
# define CPP_WORDSZ 64
|
|
# ifndef HBLKSIZE
|
|
# define HBLKSIZE 4096
|
|
# endif
|
|
# else
|
|
# define ALIGNMENT 4
|
|
# endif
|
|
# define OS_TYPE "LINUX"
|
|
/* HEURISTIC1 has been reliably reported to fail for a 32-bit */
|
|
/* executable on a 64 bit kernel. */
|
|
# define LINUX_STACKBOTTOM
|
|
# define DYNAMIC_LOADING
|
|
# define SEARCH_FOR_DATA_START
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# endif
|
|
# ifdef DARWIN
|
|
# define OS_TYPE "DARWIN"
|
|
# define DYNAMIC_LOADING
|
|
# if defined(__ppc64__)
|
|
# define ALIGNMENT 8
|
|
# define CPP_WORDSZ 64
|
|
# define STACKBOTTOM ((ptr_t) 0x7fff5fc00000)
|
|
# define CACHE_LINE_SIZE 64
|
|
# ifndef HBLKSIZE
|
|
# define HBLKSIZE 4096
|
|
# endif
|
|
# else
|
|
# define ALIGNMENT 4
|
|
# define STACKBOTTOM ((ptr_t) 0xc0000000)
|
|
# endif
|
|
/* XXX: see get_end(3), get_etext() and get_end() should not be used.
|
|
These aren't used when dyld support is enabled (it is by default) */
|
|
# define DATASTART ((ptr_t) get_etext())
|
|
# define DATAEND ((ptr_t) get_end())
|
|
# define USE_MMAP
|
|
# define USE_MMAP_ANON
|
|
# define USE_ASM_PUSH_REGS
|
|
# ifdef GC_DARWIN_THREADS
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() getpagesize()
|
|
# if defined(USE_PPC_PREFETCH) && defined(__GNUC__)
|
|
/* The performance impact of prefetches is untested */
|
|
# define PREFETCH(x) \
|
|
__asm__ __volatile__ ("dcbt 0,%0" : : "r" ((const void *) (x)))
|
|
# define PREFETCH_FOR_WRITE(x) \
|
|
__asm__ __volatile__ ("dcbtst 0,%0" : : "r" ((const void *) (x)))
|
|
# endif
|
|
/* There seems to be some issues with trylock hanging on darwin. This
|
|
should be looked into some more */
|
|
# define NO_PTHREAD_TRYLOCK
|
|
# endif
|
|
# ifdef FREEBSD
|
|
# define ALIGNMENT 4
|
|
# define OS_TYPE "FREEBSD"
|
|
# ifndef GC_FREEBSD_THREADS
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# define SIG_SUSPEND SIGUSR1
|
|
# define SIG_THR_RESTART SIGUSR2
|
|
# define FREEBSD_STACKBOTTOM
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
extern char etext[];
|
|
extern char * GC_FreeBSDGetDataStart();
|
|
# define DATASTART GC_FreeBSDGetDataStart(0x1000, &etext)
|
|
# endif
|
|
# ifdef NETBSD
|
|
# define ALIGNMENT 4
|
|
# define OS_TYPE "NETBSD"
|
|
# define HEURISTIC2
|
|
extern char etext[];
|
|
# define DATASTART GC_data_start
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef NOSYS
|
|
# define ALIGNMENT 4
|
|
# define OS_TYPE "NOSYS"
|
|
extern void __end[], __dso_handle[];
|
|
# define DATASTART (__dso_handle) /* OK, that's ugly. */
|
|
# define DATAEND (__end)
|
|
/* Stack starts at 0xE0000000 for the simulator. */
|
|
# undef STACK_GRAN
|
|
# define STACK_GRAN 0x10000000
|
|
# define HEURISTIC1
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef VAX
|
|
# define MACH_TYPE "VAX"
|
|
# define ALIGNMENT 4 /* Pointers are longword aligned by 4.2 C compiler */
|
|
extern char etext[];
|
|
# define DATASTART ((ptr_t)(etext))
|
|
# ifdef BSD
|
|
# define OS_TYPE "BSD"
|
|
# define HEURISTIC1
|
|
/* HEURISTIC2 may be OK, but it's hard to test. */
|
|
# endif
|
|
# ifdef ULTRIX
|
|
# define OS_TYPE "ULTRIX"
|
|
# define STACKBOTTOM ((ptr_t) 0x7fffc800)
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef RT
|
|
# define MACH_TYPE "RT"
|
|
# define ALIGNMENT 4
|
|
# define DATASTART ((ptr_t) 0x10000000)
|
|
# define STACKBOTTOM ((ptr_t) 0x1fffd800)
|
|
# endif
|
|
|
|
# ifdef SPARC
|
|
# define MACH_TYPE "SPARC"
|
|
# if defined(__arch64__) || defined(__sparcv9)
|
|
# define ALIGNMENT 8
|
|
# define CPP_WORDSZ 64
|
|
# define ELF_CLASS ELFCLASS64
|
|
# else
|
|
# define ALIGNMENT 4 /* Required by hardware */
|
|
# define CPP_WORDSZ 32
|
|
# endif
|
|
# define ALIGN_DOUBLE
|
|
# ifdef SUNOS5
|
|
# define OS_TYPE "SUNOS5"
|
|
extern int _etext[];
|
|
extern int _end[];
|
|
extern ptr_t GC_SysVGetDataStart();
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, _etext)
|
|
# define DATAEND (_end)
|
|
# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC)
|
|
# define USE_MMAP
|
|
/* Otherwise we now use calloc. Mmap may result in the */
|
|
/* heap interleaved with thread stacks, which can result in */
|
|
/* excessive blacklisting. Sbrk is unusable since it */
|
|
/* doesn't interact correctly with the system malloc. */
|
|
# endif
|
|
# ifdef USE_MMAP
|
|
# define HEAP_START (ptr_t)0x40000000
|
|
# else
|
|
# define HEAP_START DATAEND
|
|
# endif
|
|
# define PROC_VDB
|
|
/* HEURISTIC1 reportedly no longer works under 2.7. */
|
|
/* HEURISTIC2 probably works, but this appears to be preferable. */
|
|
/* Apparently USRSTACK is defined to be USERLIMIT, but in some */
|
|
/* installations that's undefined. We work around this with a */
|
|
/* gross hack: */
|
|
# include <sys/vmparam.h>
|
|
# ifdef USERLIMIT
|
|
/* This should work everywhere, but doesn't. */
|
|
# define STACKBOTTOM USRSTACK
|
|
# else
|
|
# define HEURISTIC2
|
|
# endif
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() sysconf(_SC_PAGESIZE)
|
|
/* getpagesize() appeared to be missing from at least one */
|
|
/* Solaris 5.4 installation. Weird. */
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef SUNOS4
|
|
# define OS_TYPE "SUNOS4"
|
|
/* [If you have a weak stomach, don't read this.] */
|
|
/* We would like to use: */
|
|
/* # define DATASTART ((ptr_t)((((word) (etext)) + 0x1fff) & ~0x1fff)) */
|
|
/* This fails occasionally, due to an ancient, but very */
|
|
/* persistent ld bug. etext is set 32 bytes too high. */
|
|
/* We instead read the text segment size from the a.out */
|
|
/* header, which happens to be mapped into our address space */
|
|
/* at the start of the text segment. The detective work here */
|
|
/* was done by Robert Ehrlich, Manuel Serrano, and Bernard */
|
|
/* Serpette of INRIA. */
|
|
/* This assumes ZMAGIC, i.e. demand-loadable executables. */
|
|
# define TEXTSTART 0x2000
|
|
# define DATASTART ((ptr_t)(*(int *)(TEXTSTART+0x4)+TEXTSTART))
|
|
# define MPROTECT_VDB
|
|
# define HEURISTIC1
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef DRSNX
|
|
# define OS_TYPE "DRSNX"
|
|
extern ptr_t GC_SysVGetDataStart();
|
|
extern int etext[];
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, etext)
|
|
# define MPROTECT_VDB
|
|
# define STACKBOTTOM ((ptr_t) 0xdfff0000)
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
Linux Sparc/a.out not supported
|
|
# endif
|
|
extern int _end[];
|
|
extern int _etext[];
|
|
# define DATAEND (_end)
|
|
# define SVR4
|
|
extern ptr_t GC_SysVGetDataStart();
|
|
# ifdef __arch64__
|
|
# define DATASTART GC_SysVGetDataStart(0x100000, _etext)
|
|
# else
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, _etext)
|
|
# endif
|
|
# define LINUX_STACKBOTTOM
|
|
# endif
|
|
# ifdef OPENBSD
|
|
# define OS_TYPE "OPENBSD"
|
|
# define STACKBOTTOM ((ptr_t) 0xf8000000)
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)(etext))
|
|
# endif
|
|
# ifdef NETBSD
|
|
# define OS_TYPE "NETBSD"
|
|
# define HEURISTIC2
|
|
# ifdef __ELF__
|
|
# define DATASTART GC_data_start
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
extern char etext[];
|
|
# define DATASTART ((ptr_t)(etext))
|
|
# endif
|
|
# endif
|
|
# ifdef FREEBSD
|
|
# define OS_TYPE "FREEBSD"
|
|
# define SIG_SUSPEND SIGUSR1
|
|
# define SIG_THR_RESTART SIGUSR2
|
|
# define FREEBSD_STACKBOTTOM
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
extern char etext[];
|
|
extern char edata[];
|
|
extern char end[];
|
|
# define NEED_FIND_LIMIT
|
|
# define DATASTART ((ptr_t)(&etext))
|
|
# define DATAEND (GC_find_limit (DATASTART, TRUE))
|
|
# define DATASTART2 ((ptr_t)(&edata))
|
|
# define DATAEND2 ((ptr_t)(&end))
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef I386
|
|
# define MACH_TYPE "I386"
|
|
# if defined(__LP64__) || defined(_WIN64)
|
|
# define CPP_WORDSZ 64
|
|
# define ALIGNMENT 8
|
|
# else
|
|
# define CPP_WORDSZ 32
|
|
# define ALIGNMENT 4
|
|
/* Appears to hold for all "32 bit" compilers */
|
|
/* except Borland. The -a4 option fixes */
|
|
/* Borland. */
|
|
/* Ivan Demakov: For Watcom the option is -zp4. */
|
|
# endif
|
|
# ifndef SMALL_CONFIG
|
|
# define ALIGN_DOUBLE /* Not strictly necessary, but may give speed */
|
|
/* improvement on Pentiums. */
|
|
# endif
|
|
# ifdef HAVE_BUILTIN_UNWIND_INIT
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# endif
|
|
# ifdef SEQUENT
|
|
# define OS_TYPE "SEQUENT"
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
|
# define STACKBOTTOM ((ptr_t) 0x3ffff000)
|
|
# endif
|
|
# ifdef BEOS
|
|
# define OS_TYPE "BEOS"
|
|
# include <OS.h>
|
|
# define GETPAGESIZE() B_PAGE_SIZE
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
|
# endif
|
|
# ifdef SUNOS5
|
|
# define OS_TYPE "SUNOS5"
|
|
extern int _etext[], _end[];
|
|
extern ptr_t GC_SysVGetDataStart();
|
|
# define DATASTART GC_SysVGetDataStart(0x1000, _etext)
|
|
# define DATAEND (_end)
|
|
/* # define STACKBOTTOM ((ptr_t)(_start)) worked through 2.7, */
|
|
/* but reportedly breaks under 2.8. It appears that the stack */
|
|
/* base is a property of the executable, so this should not break */
|
|
/* old executables. */
|
|
/* HEURISTIC2 probably works, but this appears to be preferable. */
|
|
# include <sys/vm.h>
|
|
# define STACKBOTTOM USRSTACK
|
|
/* At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */
|
|
/* It appears to be fixed in 2.8 and 2.9. */
|
|
# ifdef SOLARIS25_PROC_VDB_BUG_FIXED
|
|
# define PROC_VDB
|
|
# endif
|
|
# define DYNAMIC_LOADING
|
|
# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC)
|
|
# define USE_MMAP
|
|
/* Otherwise we now use calloc. Mmap may result in the */
|
|
/* heap interleaved with thread stacks, which can result in */
|
|
/* excessive blacklisting. Sbrk is unusable since it */
|
|
/* doesn't interact correctly with the system malloc. */
|
|
# endif
|
|
# ifdef USE_MMAP
|
|
# define HEAP_START (ptr_t)0x40000000
|
|
# else
|
|
# define HEAP_START DATAEND
|
|
# endif
|
|
# endif
|
|
# ifdef SCO
|
|
# define OS_TYPE "SCO"
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \
|
|
& ~0x3fffff) \
|
|
+((word)etext & 0xfff))
|
|
# define STACKBOTTOM ((ptr_t) 0x7ffffffc)
|
|
# endif
|
|
# ifdef SCO_ELF
|
|
# define OS_TYPE "SCO_ELF"
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)(etext))
|
|
# define STACKBOTTOM ((ptr_t) 0x08048000)
|
|
# define DYNAMIC_LOADING
|
|
# define ELF_CLASS ELFCLASS32
|
|
# endif
|
|
# ifdef DGUX
|
|
# define OS_TYPE "DGUX"
|
|
extern int _etext, _end;
|
|
extern ptr_t GC_SysVGetDataStart();
|
|
# define DATASTART GC_SysVGetDataStart(0x1000, &_etext)
|
|
# define DATAEND (&_end)
|
|
# define STACK_GROWS_DOWN
|
|
# define HEURISTIC2
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() sysconf(_SC_PAGESIZE)
|
|
# define DYNAMIC_LOADING
|
|
# ifndef USE_MMAP
|
|
# define USE_MMAP
|
|
# endif /* USE_MMAP */
|
|
# define MAP_FAILED (void *) -1
|
|
# ifdef USE_MMAP
|
|
# define HEAP_START (ptr_t)0x40000000
|
|
# else /* USE_MMAP */
|
|
# define HEAP_START DATAEND
|
|
# endif /* USE_MMAP */
|
|
# endif /* DGUX */
|
|
|
|
# ifdef LINUX
|
|
# ifndef __GNUC__
|
|
/* The Intel compiler doesn't like inline assembly */
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# endif
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# if 0
|
|
# define HEURISTIC1
|
|
# undef STACK_GRAN
|
|
# define STACK_GRAN 0x10000000
|
|
/* STACKBOTTOM is usually 0xc0000000, but this changes with */
|
|
/* different kernel configurations. In particular, systems */
|
|
/* with 2GB physical memory will usually move the user */
|
|
/* address space limit, and hence initial SP to 0x80000000. */
|
|
# endif
|
|
# if !defined(GC_LINUX_THREADS) || !defined(REDIRECT_MALLOC)
|
|
# define MPROTECT_VDB
|
|
# else
|
|
/* We seem to get random errors in incremental mode, */
|
|
/* possibly because Linux threads is itself a malloc client */
|
|
/* and can't deal with the signals. */
|
|
# endif
|
|
# define HEAP_START (ptr_t)0x1000
|
|
/* This encourages mmap to give us low addresses, */
|
|
/* thus allowing the heap to grow to ~3GB */
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# ifdef UNDEFINED /* includes ro data */
|
|
extern int _etext[];
|
|
# define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff))
|
|
# endif
|
|
# include <features.h>
|
|
# if defined(__GLIBC__) && __GLIBC__ >= 2
|
|
# define SEARCH_FOR_DATA_START
|
|
# else
|
|
extern char **__environ;
|
|
# define DATASTART ((ptr_t)(&__environ))
|
|
/* hideous kludge: __environ is the first */
|
|
/* word in crt0.o, and delimits the start */
|
|
/* of the data segment, no matter which */
|
|
/* ld options were passed through. */
|
|
/* We could use _etext instead, but that */
|
|
/* would include .rodata, which may */
|
|
/* contain large read-only data tables */
|
|
/* that we'd rather not scan. */
|
|
# endif
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# else
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
|
# endif
|
|
# ifdef USE_I686_PREFETCH
|
|
/* FIXME: Thus should use __builtin_prefetch, but we'll leave that */
|
|
/* for the next rtelease. */
|
|
# define PREFETCH(x) \
|
|
__asm__ __volatile__ (" prefetchnta %0": : "m"(*(char *)(x)))
|
|
/* Empirically prefetcht0 is much more effective at reducing */
|
|
/* cache miss stalls for the targetted load instructions. But it */
|
|
/* seems to interfere enough with other cache traffic that the net */
|
|
/* result is worse than prefetchnta. */
|
|
# if 0
|
|
/* Using prefetches for write seems to have a slight negative */
|
|
/* impact on performance, at least for a PIII/500. */
|
|
# define PREFETCH_FOR_WRITE(x) \
|
|
__asm__ __volatile__ (" prefetcht0 %0": : "m"(*(char *)(x)))
|
|
# endif
|
|
# endif
|
|
# ifdef USE_3DNOW_PREFETCH
|
|
# define PREFETCH(x) \
|
|
__asm__ __volatile__ (" prefetch %0": : "m"(*(char *)(x)))
|
|
# define PREFETCH_FOR_WRITE(x) \
|
|
__asm__ __volatile__ (" prefetchw %0": : "m"(*(char *)(x)))
|
|
# endif
|
|
# endif
|
|
# ifdef CYGWIN32
|
|
# define OS_TYPE "CYGWIN32"
|
|
# define DATASTART ((ptr_t)GC_DATASTART) /* From gc.h */
|
|
# define DATAEND ((ptr_t)GC_DATAEND)
|
|
# undef STACK_GRAN
|
|
# define STACK_GRAN 0x10000
|
|
# define HEURISTIC1
|
|
# endif
|
|
# ifdef OS2
|
|
# define OS_TYPE "OS2"
|
|
/* STACKBOTTOM and DATASTART are handled specially in */
|
|
/* os_dep.c. OS2 actually has the right */
|
|
/* system call! */
|
|
# define DATAEND /* not needed */
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# endif
|
|
# ifdef MSWIN32
|
|
# define OS_TYPE "MSWIN32"
|
|
/* STACKBOTTOM and DATASTART are handled specially in */
|
|
/* os_dep.c. */
|
|
# ifndef __WATCOMC__
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
# ifdef MSWINCE
|
|
# define OS_TYPE "MSWINCE"
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
# ifdef DJGPP
|
|
# define OS_TYPE "DJGPP"
|
|
# include "stubinfo.h"
|
|
extern int etext[];
|
|
extern int _stklen;
|
|
extern int __djgpp_stack_limit;
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0x1ff) & ~0x1ff))
|
|
/* # define STACKBOTTOM ((ptr_t)((word) _stubinfo + _stubinfo->size \
|
|
+ _stklen)) */
|
|
# define STACKBOTTOM ((ptr_t)((word) __djgpp_stack_limit + _stklen))
|
|
/* This may not be right. */
|
|
# endif
|
|
# ifdef OPENBSD
|
|
# define OS_TYPE "OPENBSD"
|
|
# endif
|
|
# ifdef FREEBSD
|
|
# define OS_TYPE "FREEBSD"
|
|
# ifndef GC_FREEBSD_THREADS
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# ifdef __GLIBC__
|
|
# define SIG_SUSPEND (32+6)
|
|
# define SIG_THR_RESTART (32+5)
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# else
|
|
# define SIG_SUSPEND SIGUSR1
|
|
# define SIG_THR_RESTART SIGUSR2
|
|
# endif
|
|
# define FREEBSD_STACKBOTTOM
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
extern char etext[];
|
|
extern char * GC_FreeBSDGetDataStart();
|
|
# define DATASTART GC_FreeBSDGetDataStart(0x1000, &etext)
|
|
# endif
|
|
# ifdef NETBSD
|
|
# define OS_TYPE "NETBSD"
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# endif
|
|
# ifdef THREE86BSD
|
|
# define OS_TYPE "THREE86BSD"
|
|
# endif
|
|
# ifdef BSDI
|
|
# define OS_TYPE "BSDI"
|
|
# endif
|
|
# if defined(OPENBSD) || defined(NETBSD) \
|
|
|| defined(THREE86BSD) || defined(BSDI)
|
|
# define HEURISTIC2
|
|
extern char etext[];
|
|
# define DATASTART ((ptr_t)(etext))
|
|
# endif
|
|
# ifdef NEXT
|
|
# define OS_TYPE "NEXT"
|
|
# define DATASTART ((ptr_t) get_etext())
|
|
# define STACKBOTTOM ((ptr_t)0xc0000000)
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
# ifdef DOS4GW
|
|
# define OS_TYPE "DOS4GW"
|
|
extern long __nullarea;
|
|
extern char _end;
|
|
extern char *_STACKTOP;
|
|
/* Depending on calling conventions Watcom C either precedes
|
|
or does not precedes with undescore names of C-variables.
|
|
Make sure startup code variables always have the same names. */
|
|
#pragma aux __nullarea "*";
|
|
#pragma aux _end "*";
|
|
# define STACKBOTTOM ((ptr_t) _STACKTOP)
|
|
/* confused? me too. */
|
|
# define DATASTART ((ptr_t) &__nullarea)
|
|
# define DATAEND ((ptr_t) &_end)
|
|
# endif
|
|
# ifdef HURD
|
|
# define OS_TYPE "HURD"
|
|
# define STACK_GROWS_DOWN
|
|
# define HEURISTIC2
|
|
extern int __data_start[];
|
|
# define DATASTART ( (ptr_t) (__data_start))
|
|
extern int _end[];
|
|
# define DATAEND ( (ptr_t) (_end))
|
|
/* # define MPROTECT_VDB Not quite working yet? */
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef DARWIN
|
|
# define OS_TYPE "DARWIN"
|
|
# define DARWIN_DONT_PARSE_STACK
|
|
# define DYNAMIC_LOADING
|
|
/* XXX: see get_end(3), get_etext() and get_end() should not be used.
|
|
These aren't used when dyld support is enabled (it is by default) */
|
|
# define DATASTART ((ptr_t) get_etext())
|
|
# define DATAEND ((ptr_t) get_end())
|
|
# define STACKBOTTOM ((ptr_t) 0xc0000000)
|
|
# define USE_MMAP
|
|
# define USE_MMAP_ANON
|
|
# define USE_ASM_PUSH_REGS
|
|
# ifdef GC_DARWIN_THREADS
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() getpagesize()
|
|
/* There seems to be some issues with trylock hanging on darwin. This
|
|
should be looked into some more */
|
|
# define NO_PTHREAD_TRYLOCK
|
|
# endif /* DARWIN */
|
|
# endif
|
|
|
|
# ifdef NS32K
|
|
# define MACH_TYPE "NS32K"
|
|
# define ALIGNMENT 4
|
|
extern char **environ;
|
|
# define DATASTART ((ptr_t)(&environ))
|
|
/* hideous kludge: environ is the first */
|
|
/* word in crt0.o, and delimits the start */
|
|
/* of the data segment, no matter which */
|
|
/* ld options were passed through. */
|
|
# define STACKBOTTOM ((ptr_t) 0xfffff000) /* for Encore */
|
|
# endif
|
|
|
|
# ifdef MIPS
|
|
# define MACH_TYPE "MIPS"
|
|
# ifdef LINUX
|
|
/* This was developed for a linuxce style platform. Probably */
|
|
/* needs to be tweaked for workstation class machines. */
|
|
# define OS_TYPE "LINUX"
|
|
# define DYNAMIC_LOADING
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
extern int __data_start[];
|
|
# define DATASTART ((ptr_t)(__data_start))
|
|
# define ALIGNMENT 4
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 2 || __GLIBC__ > 2
|
|
# define LINUX_STACKBOTTOM
|
|
# else
|
|
# define STACKBOTTOM 0x80000000
|
|
# endif
|
|
# endif /* Linux */
|
|
# ifdef EWS4800
|
|
# define HEURISTIC2
|
|
# if defined(_MIPS_SZPTR) && (_MIPS_SZPTR == 64)
|
|
extern int _fdata[], _end[];
|
|
# define DATASTART ((ptr_t)_fdata)
|
|
# define DATAEND ((ptr_t)_end)
|
|
# define CPP_WORDSZ _MIPS_SZPTR
|
|
# define ALIGNMENT (_MIPS_SZPTR/8)
|
|
# else
|
|
extern int etext[], edata[], end[];
|
|
extern int _DYNAMIC_LINKING[], _gp[];
|
|
# define DATASTART ((ptr_t)((((word)etext + 0x3ffff) & ~0x3ffff) \
|
|
+ ((word)etext & 0xffff)))
|
|
# define DATAEND (edata)
|
|
# define DATASTART2 (_DYNAMIC_LINKING \
|
|
? (ptr_t)(((word)_gp + 0x8000 + 0x3ffff) & ~0x3ffff) \
|
|
: (ptr_t)edata)
|
|
# define DATAEND2 (end)
|
|
# define ALIGNMENT 4
|
|
# endif
|
|
# define OS_TYPE "EWS4800"
|
|
# define USE_GENERIC_PUSH_REGS 1
|
|
# endif
|
|
# ifdef ULTRIX
|
|
# define HEURISTIC2
|
|
# define DATASTART (ptr_t)0x10000000
|
|
/* Could probably be slightly higher since */
|
|
/* startup code allocates lots of stuff. */
|
|
# define OS_TYPE "ULTRIX"
|
|
# define ALIGNMENT 4
|
|
# endif
|
|
# ifdef RISCOS
|
|
# define HEURISTIC2
|
|
# define DATASTART (ptr_t)0x10000000
|
|
# define OS_TYPE "RISCOS"
|
|
# define ALIGNMENT 4 /* Required by hardware */
|
|
# endif
|
|
# ifdef IRIX5
|
|
# define HEURISTIC2
|
|
extern int _fdata[];
|
|
# define DATASTART ((ptr_t)(_fdata))
|
|
# ifdef USE_MMAP
|
|
# define HEAP_START (ptr_t)0x30000000
|
|
# else
|
|
# define HEAP_START DATASTART
|
|
# endif
|
|
/* Lowest plausible heap address. */
|
|
/* In the MMAP case, we map there. */
|
|
/* In either case it is used to identify */
|
|
/* heap sections so they're not */
|
|
/* considered as roots. */
|
|
# define OS_TYPE "IRIX5"
|
|
/*# define MPROTECT_VDB DOB: this should work, but there is evidence */
|
|
/* of recent breakage. */
|
|
# ifdef _MIPS_SZPTR
|
|
# define CPP_WORDSZ _MIPS_SZPTR
|
|
# define ALIGNMENT (_MIPS_SZPTR/8)
|
|
# if CPP_WORDSZ != 64
|
|
# define ALIGN_DOUBLE
|
|
# endif
|
|
# else
|
|
# define ALIGNMENT 4
|
|
# define ALIGN_DOUBLE
|
|
# endif
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef MSWINCE
|
|
# define OS_TYPE "MSWINCE"
|
|
# define ALIGNMENT 4
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
# if defined(NETBSD)
|
|
# define ALIGNMENT 4
|
|
# define OS_TYPE "NETBSD"
|
|
# define HEURISTIC2
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# ifdef __ELF__
|
|
extern int etext[];
|
|
# define DATASTART GC_data_start
|
|
# define NEED_FIND_LIMIT
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
# define DATASTART ((ptr_t) 0x10000000)
|
|
# define STACKBOTTOM ((ptr_t) 0x7ffff000)
|
|
# endif /* _ELF_ */
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef RS6000
|
|
# define MACH_TYPE "RS6000"
|
|
# ifdef ALIGNMENT
|
|
# undef ALIGNMENT
|
|
# endif
|
|
# ifdef IA64
|
|
# undef IA64 /* DOB: some AIX installs stupidly define IA64 in /usr/include/sys/systemcfg.h */
|
|
# endif
|
|
# ifdef __64BIT__
|
|
# define ALIGNMENT 8
|
|
# define CPP_WORDSZ 64
|
|
# define STACKBOTTOM ((ptr_t)0x1000000000000000)
|
|
# else
|
|
# define ALIGNMENT 4
|
|
# define CPP_WORDSZ 32
|
|
# define STACKBOTTOM ((ptr_t)((ulong)&errno))
|
|
# endif
|
|
# define USE_MMAP
|
|
# define USE_MMAP_ANON
|
|
/* From AIX linker man page:
|
|
_text Specifies the first location of the program.
|
|
_etext Specifies the first location after the program.
|
|
_data Specifies the first location of the data.
|
|
_edata Specifies the first location after the initialized data
|
|
_end or end Specifies the first location after all data.
|
|
*/
|
|
extern int _data[], _end[];
|
|
# define DATASTART ((ptr_t)((ulong)_data))
|
|
# define DATAEND ((ptr_t)((ulong)_end))
|
|
extern int errno;
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# define DYNAMIC_LOADING
|
|
/* For really old versions of AIX, this may have to be removed. */
|
|
# endif
|
|
|
|
# ifdef HP_PA
|
|
# define MACH_TYPE "HP_PA"
|
|
# ifdef __LP64__
|
|
# define CPP_WORDSZ 64
|
|
# define ALIGNMENT 8
|
|
# else
|
|
# define CPP_WORDSZ 32
|
|
# define ALIGNMENT 4
|
|
# define ALIGN_DOUBLE
|
|
# endif
|
|
# if !defined(GC_HPUX_THREADS) && !defined(GC_LINUX_THREADS)
|
|
# ifndef LINUX /* For now. */
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# else
|
|
# define GENERIC_COMPARE_AND_SWAP
|
|
/* No compare-and-swap instruction. Use pthread mutexes */
|
|
/* when we absolutely have to. */
|
|
# ifdef PARALLEL_MARK
|
|
# define USE_MARK_BYTES
|
|
/* Minimize compare-and-swap usage. */
|
|
# endif
|
|
# endif
|
|
# define STACK_GROWS_UP
|
|
# ifdef HPUX
|
|
# define OS_TYPE "HPUX"
|
|
extern int __data_start[];
|
|
# define DATASTART ((ptr_t)(__data_start))
|
|
# if 0
|
|
/* The following appears to work for 7xx systems running HP/UX */
|
|
/* 9.xx Furthermore, it might result in much faster */
|
|
/* collections than HEURISTIC2, which may involve scanning */
|
|
/* segments that directly precede the stack. It is not the */
|
|
/* default, since it may not work on older machine/OS */
|
|
/* combinations. (Thanks to Raymond X.T. Nijssen for uncovering */
|
|
/* this.) */
|
|
# define STACKBOTTOM ((ptr_t) 0x7b033000) /* from /etc/conf/h/param.h */
|
|
# else
|
|
/* Gustavo Rodriguez-Rivera suggested changing HEURISTIC2 */
|
|
/* to this. Note that the GC must be initialized before the */
|
|
/* first putenv call. */
|
|
extern char ** environ;
|
|
# define STACKBOTTOM ((ptr_t)environ)
|
|
# endif
|
|
# define DYNAMIC_LOADING
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
|
|
# ifndef __GNUC__
|
|
# define PREFETCH(x) { \
|
|
register long addr = (long)(x); \
|
|
(void) _asm ("LDW", 0, 0, addr, 0); \
|
|
}
|
|
# endif
|
|
# endif /* HPUX */
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# define DYNAMIC_LOADING
|
|
# define SEARCH_FOR_DATA_START
|
|
extern int _end[];
|
|
# define DATAEND (&_end)
|
|
# endif /* LINUX */
|
|
# endif /* HP_PA */
|
|
|
|
# ifdef ALPHA
|
|
# define MACH_TYPE "ALPHA"
|
|
# define ALIGNMENT 8
|
|
# define CPP_WORDSZ 64
|
|
# ifndef LINUX
|
|
# define USE_GENERIC_PUSH_REGS
|
|
/* Gcc and probably the DEC/Compaq compiler spill pointers to preserved */
|
|
/* fp registers in some cases when the target is a 21264. The assembly */
|
|
/* code doesn't handle that yet, and version dependencies make that a */
|
|
/* bit tricky. Do the easy thing for now. */
|
|
# endif
|
|
# ifdef NETBSD
|
|
# define OS_TYPE "NETBSD"
|
|
# define HEURISTIC2
|
|
# define DATASTART GC_data_start
|
|
# define ELFCLASS32 32
|
|
# define ELFCLASS64 64
|
|
# define ELF_CLASS ELFCLASS64
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef OPENBSD
|
|
# define OS_TYPE "OPENBSD"
|
|
# define HEURISTIC2
|
|
# ifdef __ELF__ /* since OpenBSD/Alpha 2.9 */
|
|
# define DATASTART GC_data_start
|
|
# define ELFCLASS32 32
|
|
# define ELFCLASS64 64
|
|
# define ELF_CLASS ELFCLASS64
|
|
# else /* ECOFF, until OpenBSD/Alpha 2.7 */
|
|
# define DATASTART ((ptr_t) 0x140000000)
|
|
# endif
|
|
# endif
|
|
# ifdef FREEBSD
|
|
# define OS_TYPE "FREEBSD"
|
|
/* MPROTECT_VDB is not yet supported at all on FreeBSD/alpha. */
|
|
# define SIG_SUSPEND SIGUSR1
|
|
# define SIG_THR_RESTART SIGUSR2
|
|
# define FREEBSD_STACKBOTTOM
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
/* Handle unmapped hole alpha*-*-freebsd[45]* puts between etext and edata. */
|
|
extern char etext[];
|
|
extern char edata[];
|
|
extern char end[];
|
|
# define NEED_FIND_LIMIT
|
|
# define DATASTART ((ptr_t)(&etext))
|
|
# define DATAEND (GC_find_limit (DATASTART, TRUE))
|
|
# define DATASTART2 ((ptr_t)(&edata))
|
|
# define DATAEND2 ((ptr_t)(&end))
|
|
# endif
|
|
# ifdef OSF1
|
|
# define OS_TYPE "OSF1"
|
|
# define DATASTART ((ptr_t) 0x140000000)
|
|
extern int _end[];
|
|
# define DATAEND ((ptr_t) &_end)
|
|
extern char ** environ;
|
|
/* round up from the value of environ to the nearest page boundary */
|
|
/* Probably breaks if putenv is called before collector */
|
|
/* initialization. */
|
|
# define STACKBOTTOM ((ptr_t)(((word)(environ) | (getpagesize()-1))+1))
|
|
/* # define HEURISTIC2 */
|
|
/* Normally HEURISTIC2 is too conervative, since */
|
|
/* the text segment immediately follows the stack. */
|
|
/* Hence we give an upper pound. */
|
|
/* This is currently unused, since we disabled HEURISTIC2 */
|
|
extern int __start[];
|
|
# define HEURISTIC2_LIMIT ((ptr_t)((word)(__start) & ~(getpagesize()-1)))
|
|
# ifndef GC_OSF1_THREADS
|
|
/* Unresolved signal issues with threads. */
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# ifdef __ELF__
|
|
# define SEARCH_FOR_DATA_START
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
# define DATASTART ((ptr_t) 0x140000000)
|
|
# endif
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# define MPROTECT_VDB
|
|
/* Has only been superficially tested. May not */
|
|
/* work on all versions. */
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef IA64
|
|
# define MACH_TYPE "IA64"
|
|
# define USE_GENERIC_PUSH_REGS
|
|
/* We need to get preserved registers in addition to register */
|
|
/* windows. That's easiest to do with setjmp. */
|
|
# ifdef PARALLEL_MARK
|
|
# define USE_MARK_BYTES
|
|
/* Compare-and-exchange is too expensive to use for */
|
|
/* setting mark bits. */
|
|
# endif
|
|
# ifdef HPUX
|
|
# ifdef _ILP32
|
|
# define CPP_WORDSZ 32
|
|
# define ALIGN_DOUBLE
|
|
/* Requires 8 byte alignment for malloc */
|
|
# define ALIGNMENT 4
|
|
# else
|
|
# ifndef _LP64
|
|
---> unknown ABI
|
|
# endif
|
|
# define CPP_WORDSZ 64
|
|
# define ALIGN_DOUBLE
|
|
/* Requires 16 byte alignment for malloc */
|
|
# define ALIGNMENT 8
|
|
# endif
|
|
# define OS_TYPE "HPUX"
|
|
extern int __data_start[];
|
|
# define DATASTART ((ptr_t)(__data_start))
|
|
/* Gustavo Rodriguez-Rivera suggested changing HEURISTIC2 */
|
|
/* to this. Note that the GC must be initialized before the */
|
|
/* first putenv call. */
|
|
extern char ** environ;
|
|
# define STACKBOTTOM ((ptr_t)environ)
|
|
# define HPUX_STACKBOTTOM
|
|
# define DYNAMIC_LOADING
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
|
|
/* The following was empirically determined, and is probably */
|
|
/* not very robust. */
|
|
/* Note that the backing store base seems to be at a nice */
|
|
/* address minus one page. */
|
|
# define BACKING_STORE_DISPLACEMENT 0x1000000
|
|
# define BACKING_STORE_ALIGNMENT 0x1000
|
|
extern ptr_t GC_register_stackbottom;
|
|
# define BACKING_STORE_BASE GC_register_stackbottom
|
|
/* Known to be wrong for recent HP/UX versions!!! */
|
|
# endif
|
|
# ifdef LINUX
|
|
# define CPP_WORDSZ 64
|
|
# define ALIGN_DOUBLE
|
|
/* Requires 16 byte alignment for malloc */
|
|
# define ALIGNMENT 8
|
|
# define OS_TYPE "LINUX"
|
|
/* The following works on NUE and older kernels: */
|
|
/* # define STACKBOTTOM ((ptr_t) 0xa000000000000000l) */
|
|
/* This does not work on NUE: */
|
|
# define LINUX_STACKBOTTOM
|
|
/* We also need the base address of the register stack */
|
|
/* backing store. This is computed in */
|
|
/* GC_linux_register_stack_base based on the following */
|
|
/* constants: */
|
|
# define BACKING_STORE_ALIGNMENT 0x100000
|
|
# define BACKING_STORE_DISPLACEMENT 0x80000000
|
|
extern ptr_t GC_register_stackbottom;
|
|
# define BACKING_STORE_BASE GC_register_stackbottom
|
|
# define SEARCH_FOR_DATA_START
|
|
# ifdef __GNUC__
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
/* In the Intel compiler environment, we seem to end up with */
|
|
/* statically linked executables and an undefined reference */
|
|
/* to _DYNAMIC */
|
|
# endif
|
|
# define MPROTECT_VDB
|
|
/* Requires Linux 2.3.47 or later. */
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# ifdef __GNUC__
|
|
# ifndef __INTEL_COMPILER
|
|
# define PREFETCH(x) \
|
|
__asm__ (" lfetch [%0]": : "r"(x))
|
|
# define PREFETCH_FOR_WRITE(x) \
|
|
__asm__ (" lfetch.excl [%0]": : "r"(x))
|
|
# define CLEAR_DOUBLE(x) \
|
|
__asm__ (" stf.spill [%0]=f0": : "r"((void *)(x)))
|
|
# else
|
|
# include <ia64intrin.h>
|
|
# define PREFETCH(x) \
|
|
__lfetch(__lfhint_none, (x))
|
|
# define PREFETCH_FOR_WRITE(x) \
|
|
__lfetch(__lfhint_nta, (x))
|
|
# define CLEAR_DOUBLE(x) \
|
|
__stf_spill((void *)(x), 0)
|
|
# endif // __INTEL_COMPILER
|
|
# endif
|
|
# endif
|
|
# ifdef MSWIN32
|
|
/* FIXME: This is a very partial guess. There is no port, yet. */
|
|
# define OS_TYPE "MSWIN32"
|
|
/* STACKBOTTOM and DATASTART are handled specially in */
|
|
/* os_dep.c. */
|
|
# define DATAEND /* not needed */
|
|
# if defined(_WIN64)
|
|
# define CPP_WORDSZ 64
|
|
# else
|
|
# define CPP_WORDSZ 32 /* Is this possible? */
|
|
# endif
|
|
# define ALIGNMENT 8
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef M88K
|
|
# define MACH_TYPE "M88K"
|
|
# define ALIGNMENT 4
|
|
# define ALIGN_DOUBLE
|
|
extern int etext[];
|
|
# ifdef CX_UX
|
|
# define OS_TYPE "CX_UX"
|
|
# define DATASTART ((((word)etext + 0x3fffff) & ~0x3fffff) + 0x10000)
|
|
# endif
|
|
# ifdef DGUX
|
|
# define OS_TYPE "DGUX"
|
|
extern ptr_t GC_SysVGetDataStart();
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, etext)
|
|
# endif
|
|
# define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */
|
|
# endif
|
|
|
|
# ifdef S370
|
|
/* If this still works, and if anyone cares, this should probably */
|
|
/* be moved to the S390 category. */
|
|
# define MACH_TYPE "S370"
|
|
# define ALIGNMENT 4 /* Required by hardware */
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# ifdef UTS4
|
|
# define OS_TYPE "UTS4"
|
|
extern int etext[];
|
|
extern int _etext[];
|
|
extern int _end[];
|
|
extern ptr_t GC_SysVGetDataStart();
|
|
# define DATASTART GC_SysVGetDataStart(0x10000, _etext)
|
|
# define DATAEND (_end)
|
|
# define HEURISTIC2
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef S390
|
|
# define MACH_TYPE "S390"
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# ifndef __s390x__
|
|
# define ALIGNMENT 4
|
|
# define CPP_WORDSZ 32
|
|
# else
|
|
# define ALIGNMENT 8
|
|
# define CPP_WORDSZ 64
|
|
# endif
|
|
# ifndef HBLKSIZE
|
|
# define HBLKSIZE 4096
|
|
# endif
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# define DYNAMIC_LOADING
|
|
extern int __data_start[];
|
|
# define DATASTART ((ptr_t)(__data_start))
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# define CACHE_LINE_SIZE 256
|
|
# define GETPAGESIZE() 4096
|
|
# endif
|
|
# endif
|
|
|
|
# if defined(PJ)
|
|
# define ALIGNMENT 4
|
|
extern int _etext[];
|
|
# define DATASTART ((ptr_t)(_etext))
|
|
# define HEURISTIC1
|
|
# endif
|
|
|
|
# ifdef ARM32
|
|
# define CPP_WORDSZ 32
|
|
# define MACH_TYPE "ARM32"
|
|
# define ALIGNMENT 4
|
|
# ifdef NETBSD
|
|
# define OS_TYPE "NETBSD"
|
|
# define HEURISTIC2
|
|
# ifdef __ELF__
|
|
# define DATASTART GC_data_start
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
extern char etext[];
|
|
# define DATASTART ((ptr_t)(etext))
|
|
# endif
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# endif
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# undef STACK_GRAN
|
|
# define STACK_GRAN 0x10000000
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# include <features.h>
|
|
# if defined(__GLIBC__) && __GLIBC__ >= 2
|
|
# define SEARCH_FOR_DATA_START
|
|
# else
|
|
extern char **__environ;
|
|
# define DATASTART ((ptr_t)(&__environ))
|
|
/* hideous kludge: __environ is the first */
|
|
/* word in crt0.o, and delimits the start */
|
|
/* of the data segment, no matter which */
|
|
/* ld options were passed through. */
|
|
/* We could use _etext instead, but that */
|
|
/* would include .rodata, which may */
|
|
/* contain large read-only data tables */
|
|
/* that we'd rather not scan. */
|
|
# endif
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# else
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
|
# endif
|
|
# endif
|
|
# ifdef MSWINCE
|
|
# define OS_TYPE "MSWINCE"
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
# ifdef NOSYS
|
|
/* __data_start is usually defined in the target linker script. */
|
|
extern int __data_start[];
|
|
# define DATASTART (ptr_t)(__data_start)
|
|
# define USE_GENERIC_PUSH_REGS
|
|
/* __stack_base__ is set in newlib/libc/sys/arm/crt0.S */
|
|
extern void *__stack_base__;
|
|
# define STACKBOTTOM ((ptr_t) (__stack_base__))
|
|
# endif
|
|
#endif
|
|
|
|
# ifdef CRIS
|
|
# define MACH_TYPE "CRIS"
|
|
# define CPP_WORDSZ 32
|
|
# define ALIGNMENT 1
|
|
# define OS_TYPE "LINUX"
|
|
# define DYNAMIC_LOADING
|
|
# define LINUX_STACKBOTTOM
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# define SEARCH_FOR_DATA_START
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# endif
|
|
|
|
# ifdef SH
|
|
# define MACH_TYPE "SH"
|
|
# define ALIGNMENT 4
|
|
# ifdef MSWINCE
|
|
# define OS_TYPE "MSWINCE"
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# define DYNAMIC_LOADING
|
|
# define SEARCH_FOR_DATA_START
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# endif
|
|
# ifdef NETBSD
|
|
# define OS_TYPE "NETBSD"
|
|
# define HEURISTIC2
|
|
# define DATASTART GC_data_start
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef SH4
|
|
# define MACH_TYPE "SH4"
|
|
# define OS_TYPE "MSWINCE"
|
|
# define ALIGNMENT 4
|
|
# define DATAEND /* not needed */
|
|
# endif
|
|
|
|
# ifdef M32R
|
|
# define CPP_WORDSZ 32
|
|
# define MACH_TYPE "M32R"
|
|
# define ALIGNMENT 4
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# undef STACK_GRAN
|
|
# define STACK_GRAN 0x10000000
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# define DYNAMIC_LOADING
|
|
# define SEARCH_FOR_DATA_START
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef X86_64
|
|
# define MACH_TYPE "X86_64"
|
|
# define ALIGNMENT 8
|
|
# define CPP_WORDSZ 64
|
|
# ifndef HBLKSIZE
|
|
# define HBLKSIZE 4096
|
|
# endif
|
|
# define CACHE_LINE_SIZE 64
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define LINUX_STACKBOTTOM
|
|
# if !defined(GC_LINUX_THREADS) || !defined(REDIRECT_MALLOC)
|
|
# define MPROTECT_VDB
|
|
# else
|
|
/* We seem to get random errors in incremental mode, */
|
|
/* possibly because Linux threads is itself a malloc client */
|
|
/* and can't deal with the signals. */
|
|
# endif
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# ifdef UNDEFINED /* includes ro data */
|
|
extern int _etext[];
|
|
# define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff))
|
|
# endif
|
|
# include <features.h>
|
|
# define SEARCH_FOR_DATA_START
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# else
|
|
extern int etext[];
|
|
# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
|
|
# endif
|
|
# if defined(__GNUC__) && __GNUC >= 3
|
|
# define PREFETCH(x) __builtin_prefetch((x), 0, 0)
|
|
# define PREFETCH_FOR_WRITE(x) __builtin_prefetch((x), 1)
|
|
# endif
|
|
# endif
|
|
# ifdef DARWIN
|
|
# define OS_TYPE "DARWIN"
|
|
# define DARWIN_DONT_PARSE_STACK
|
|
# define DYNAMIC_LOADING
|
|
/* XXX: see get_end(3), get_etext() and get_end() should not be used.
|
|
These aren't used when dyld support is enabled (it is by default) */
|
|
# define DATASTART ((ptr_t) get_etext())
|
|
# define DATAEND ((ptr_t) get_end())
|
|
# define STACKBOTTOM ((ptr_t) 0x7fff5fc00000)
|
|
# define USE_MMAP
|
|
# define USE_MMAP_ANON
|
|
# ifdef GC_DARWIN_THREADS
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() getpagesize()
|
|
/* There seems to be some issues with trylock hanging on darwin. This
|
|
should be looked into some more */
|
|
# define NO_PTHREAD_TRYLOCK
|
|
# endif
|
|
# ifdef FREEBSD
|
|
# define OS_TYPE "FREEBSD"
|
|
# ifndef GC_FREEBSD_THREADS
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# ifdef __GLIBC__
|
|
# define SIG_SUSPEND (32+6)
|
|
# define SIG_THR_RESTART (32+5)
|
|
extern int _end[];
|
|
# define DATAEND (_end)
|
|
# else
|
|
# define SIG_SUSPEND SIGUSR1
|
|
# define SIG_THR_RESTART SIGUSR2
|
|
# endif
|
|
# define FREEBSD_STACKBOTTOM
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
extern char etext[];
|
|
extern char * GC_FreeBSDGetDataStart();
|
|
# define DATASTART GC_FreeBSDGetDataStart(0x1000, &etext)
|
|
# endif
|
|
# ifdef NETBSD
|
|
# define OS_TYPE "NETBSD"
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# define HEURISTIC2
|
|
extern char etext[];
|
|
# define SEARCH_FOR_DATA_START
|
|
# endif
|
|
# ifdef SUNOS5
|
|
# define ELF_CLASS ELFCLASS64
|
|
# define OS_TYPE "SUNOS5"
|
|
extern int _etext[], _end[];
|
|
extern ptr_t GC_SysVGetDataStart();
|
|
# define DATASTART GC_SysVGetDataStart(0x1000, _etext)
|
|
# define DATAEND (_end)
|
|
/* # define STACKBOTTOM ((ptr_t)(_start)) worked through 2.7, */
|
|
/* but reportedly breaks under 2.8. It appears that the stack */
|
|
/* base is a property of the executable, so this should not break */
|
|
/* old executables. */
|
|
/* HEURISTIC2 probably works, but this appears to be preferable. */
|
|
/* # include <sys/vm.h> */
|
|
/* # define STACKBOTTOM USRSTACK */
|
|
# define HEURISTIC2
|
|
# define PROC_VDB
|
|
# define DYNAMIC_LOADING
|
|
# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC)
|
|
# define USE_MMAP
|
|
/* Otherwise we now use calloc. Mmap may result in the */
|
|
/* heap interleaved with thread stacks, which can result in */
|
|
/* excessive blacklisting. Sbrk is unusable since it */
|
|
/* doesn't interact correctly with the system malloc. */
|
|
# endif
|
|
# ifdef USE_MMAP
|
|
# define HEAP_START (ptr_t)0x40000000
|
|
# else
|
|
# define HEAP_START DATAEND
|
|
# endif
|
|
# endif
|
|
# endif
|
|
|
|
#if defined(LINUX) && defined(USE_MMAP)
|
|
/* The kernel may do a somewhat better job merging mappings etc. */
|
|
/* with anonymous mappings. */
|
|
# define USE_MMAP_ANON
|
|
#endif
|
|
|
|
#if defined(LINUX) && defined(REDIRECT_MALLOC)
|
|
/* Rld appears to allocate some memory with its own allocator, and */
|
|
/* some through malloc, which might be redirected. To make this */
|
|
/* work with collectable memory, we have to scan memory allocated */
|
|
/* by rld's internal malloc. */
|
|
# define USE_PROC_FOR_LIBRARIES
|
|
#endif
|
|
|
|
# ifndef STACK_GROWS_UP
|
|
# define STACK_GROWS_DOWN
|
|
# endif
|
|
|
|
# ifndef CPP_WORDSZ
|
|
# define CPP_WORDSZ 32
|
|
# endif
|
|
|
|
# ifndef OS_TYPE
|
|
# define OS_TYPE ""
|
|
# endif
|
|
|
|
# ifndef DATAEND
|
|
extern int end[];
|
|
# define DATAEND (end)
|
|
# endif
|
|
|
|
# if defined(SVR4) && !defined(GETPAGESIZE)
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() sysconf(_SC_PAGESIZE)
|
|
# endif
|
|
|
|
# ifndef GETPAGESIZE
|
|
# if defined(SUNOS5) || defined(IRIX5)
|
|
# include <unistd.h>
|
|
# endif
|
|
# define GETPAGESIZE() getpagesize()
|
|
# endif
|
|
|
|
# if defined(SUNOS5) || defined(DRSNX) || defined(UTS4)
|
|
/* OS has SVR4 generic features. Probably others also qualify. */
|
|
# define SVR4
|
|
# endif
|
|
|
|
# if defined(SUNOS5) || defined(DRSNX)
|
|
/* OS has SUNOS5 style semi-undocumented interface to dynamic */
|
|
/* loader. */
|
|
# define SUNOS5DL
|
|
/* OS has SUNOS5 style signal handlers. */
|
|
# define SUNOS5SIGS
|
|
# endif
|
|
|
|
# if defined(HPUX)
|
|
# define SUNOS5SIGS
|
|
# endif
|
|
|
|
# if defined(FREEBSD) && ((__FreeBSD__ >= 4) || (__FreeBSD_kernel__ >= 4))
|
|
# define SUNOS5SIGS
|
|
# endif
|
|
|
|
# if defined(SVR4) || defined(LINUX) || defined(IRIX5) || defined(HPUX) \
|
|
|| defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) \
|
|
|| defined(DGUX) || defined(BSD) || defined(SUNOS4) \
|
|
|| defined(_AIX) || defined(DARWIN) || defined(OSF1)
|
|
# define UNIX_LIKE /* Basic Unix-like system calls work. */
|
|
# endif
|
|
|
|
# if CPP_WORDSZ != 32 && CPP_WORDSZ != 64
|
|
-> bad word size
|
|
# endif
|
|
|
|
# ifdef PCR
|
|
# undef DYNAMIC_LOADING
|
|
# undef STACKBOTTOM
|
|
# undef HEURISTIC1
|
|
# undef HEURISTIC2
|
|
# undef PROC_VDB
|
|
# undef MPROTECT_VDB
|
|
# define PCR_VDB
|
|
# endif
|
|
|
|
# ifdef SRC_M3
|
|
/* Postponed for now. */
|
|
# undef PROC_VDB
|
|
# undef MPROTECT_VDB
|
|
# endif
|
|
|
|
# ifdef SMALL_CONFIG
|
|
/* Presumably not worth the space it takes. */
|
|
# undef PROC_VDB
|
|
# undef MPROTECT_VDB
|
|
# endif
|
|
|
|
# ifdef USE_MUNMAP
|
|
# undef MPROTECT_VDB /* Can't deal with address space holes. */
|
|
# endif
|
|
|
|
# ifdef PARALLEL_MARK
|
|
# undef MPROTECT_VDB /* For now. */
|
|
# endif
|
|
|
|
# if !defined(PCR_VDB) && !defined(PROC_VDB) && !defined(MPROTECT_VDB)
|
|
# define DEFAULT_VDB
|
|
# endif
|
|
|
|
# ifndef PREFETCH
|
|
# define PREFETCH(x)
|
|
# define NO_PREFETCH
|
|
# endif
|
|
|
|
# ifndef PREFETCH_FOR_WRITE
|
|
# define PREFETCH_FOR_WRITE(x)
|
|
# define NO_PREFETCH_FOR_WRITE
|
|
# endif
|
|
|
|
# ifndef CACHE_LINE_SIZE
|
|
# define CACHE_LINE_SIZE 32 /* Wild guess */
|
|
# endif
|
|
|
|
# if defined(LINUX) || defined(__GLIBC__)
|
|
# define REGISTER_LIBRARIES_EARLY
|
|
/* We sometimes use dl_iterate_phdr, which may acquire an internal */
|
|
/* lock. This isn't safe after the world has stopped. So we must */
|
|
/* call GC_register_dynamic_libraries before stopping the world. */
|
|
/* For performance reasons, this may be beneficial on other */
|
|
/* platforms as well, though it should be avoided in win32. */
|
|
# endif /* LINUX */
|
|
|
|
# if defined(SEARCH_FOR_DATA_START)
|
|
extern ptr_t GC_data_start;
|
|
# define DATASTART GC_data_start
|
|
# endif
|
|
|
|
# ifndef CLEAR_DOUBLE
|
|
# define CLEAR_DOUBLE(x) \
|
|
((word*)x)[0] = 0; \
|
|
((word*)x)[1] = 0;
|
|
# endif /* CLEAR_DOUBLE */
|
|
|
|
# if defined(GC_IRIX_THREADS) && !defined(IRIX5)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(GC_LINUX_THREADS) && !defined(LINUX)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(GC_SOLARIS_THREADS) && !defined(SUNOS5)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(GC_HPUX_THREADS) && !defined(HPUX)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(GC_AIX_THREADS) && !defined(_AIX)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(GC_WIN32_THREADS) && !defined(MSWIN32) && !defined(CYGWIN32)
|
|
--> inconsistent configuration
|
|
# endif
|
|
|
|
# if defined(PCR) || defined(SRC_M3) || \
|
|
defined(GC_SOLARIS_THREADS) || defined(GC_WIN32_THREADS) || \
|
|
defined(GC_PTHREADS)
|
|
# define THREADS
|
|
# endif
|
|
|
|
# if defined(HP_PA) || defined(M88K) \
|
|
|| defined(POWERPC) && !defined(DARWIN) \
|
|
|| defined(LINT) || defined(MSWINCE) || defined(ARM32) || defined(CRIS) \
|
|
|| (defined(I386) && defined(__LCC__))
|
|
/* Use setjmp based hack to mark from callee-save registers. */
|
|
/* The define should move to the individual platform */
|
|
/* descriptions. */
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# endif
|
|
|
|
# if defined(MSWINCE)
|
|
# define NO_GETENV
|
|
# endif
|
|
|
|
# if defined(SPARC)
|
|
# define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */
|
|
/* include assembly code to do it well. */
|
|
# endif
|
|
|
|
/* Can we save call chain in objects for debugging? */
|
|
/* SET NFRAMES (# of saved frames) and NARGS (#of args for each */
|
|
/* frame) to reasonable values for the platform. */
|
|
/* Set SAVE_CALL_CHAIN if we can. SAVE_CALL_COUNT can be specified */
|
|
/* at build time, though we feel free to adjust it slightly. */
|
|
/* Define NEED_CALLINFO if we either save the call stack or */
|
|
/* GC_ADD_CALLER is defined. */
|
|
/* GC_CAN_SAVE_CALL_STACKS is set in gc.h. */
|
|
|
|
#if defined(SPARC)
|
|
# define CAN_SAVE_CALL_ARGS
|
|
#endif
|
|
#if (defined(I386) || defined(X86_64)) && (defined(LINUX) || defined(__GLIBC__))
|
|
/* SAVE_CALL_CHAIN is supported if the code is compiled to save */
|
|
/* frame pointers by default, i.e. no -fomit-frame-pointer flag. */
|
|
# define CAN_SAVE_CALL_ARGS
|
|
#endif
|
|
|
|
# if defined(SAVE_CALL_COUNT) && !defined(GC_ADD_CALLER) \
|
|
&& defined(GC_CAN_SAVE_CALL_STACKS)
|
|
# define SAVE_CALL_CHAIN
|
|
# endif
|
|
# ifdef SAVE_CALL_CHAIN
|
|
# if defined(SAVE_CALL_NARGS) && defined(CAN_SAVE_CALL_ARGS)
|
|
# define NARGS SAVE_CALL_NARGS
|
|
# else
|
|
# define NARGS 0 /* Number of arguments to save for each call. */
|
|
# endif
|
|
# endif
|
|
# ifdef SAVE_CALL_CHAIN
|
|
# ifndef SAVE_CALL_COUNT
|
|
# define NFRAMES 6 /* Number of frames to save. Even for */
|
|
/* alignment reasons. */
|
|
# else
|
|
# define NFRAMES ((SAVE_CALL_COUNT + 1) & ~1)
|
|
# endif
|
|
# define NEED_CALLINFO
|
|
# endif /* SAVE_CALL_CHAIN */
|
|
# ifdef GC_ADD_CALLER
|
|
# define NFRAMES 1
|
|
# define NARGS 0
|
|
# define NEED_CALLINFO
|
|
# endif
|
|
|
|
# if defined(MAKE_BACK_GRAPH) && !defined(DBG_HDRS_ALL)
|
|
# define DBG_HDRS_ALL
|
|
# endif
|
|
|
|
# if defined(POINTER_MASK) && !defined(POINTER_SHIFT)
|
|
# define POINTER_SHIFT 0
|
|
# endif
|
|
|
|
# if defined(POINTER_SHIFT) && !defined(POINTER_MASK)
|
|
# define POINTER_MASK ((GC_word)(-1))
|
|
# endif
|
|
|
|
# if !defined(FIXUP_POINTER) && defined(POINTER_MASK)
|
|
# define FIXUP_POINTER(p) (p) = ((p) & (POINTER_MASK) << POINTER_SHIFT)
|
|
# endif
|
|
|
|
# if defined(FIXUP_POINTER)
|
|
# define NEED_FIXUP_POINTER 1
|
|
# else
|
|
# define NEED_FIXUP_POINTER 0
|
|
# define FIXUP_POINTER(p)
|
|
# endif
|
|
|
|
#ifdef GC_PRIVATE_H
|
|
/* This relies on some type definitions from gc_priv.h, from */
|
|
/* where it's normally included. */
|
|
/* */
|
|
/* How to get heap memory from the OS: */
|
|
/* Note that sbrk()-like allocation is preferred, since it */
|
|
/* usually makes it possible to merge consecutively allocated */
|
|
/* chunks. It also avoids unintented recursion with */
|
|
/* -DREDIRECT_MALLOC. */
|
|
/* GET_MEM() returns a HLKSIZE aligned chunk. */
|
|
/* 0 is taken to mean failure. */
|
|
/* In the case os USE_MMAP, the argument must also be a */
|
|
/* physical page size. */
|
|
/* GET_MEM is currently not assumed to retrieve 0 filled space, */
|
|
/* though we should perhaps take advantage of the case in which */
|
|
/* does. */
|
|
struct hblk; /* See gc_priv.h. */
|
|
# ifdef PCR
|
|
char * real_malloc();
|
|
# define GET_MEM(bytes) HBLKPTR(real_malloc((size_t)bytes + GC_page_size) \
|
|
+ GC_page_size-1)
|
|
# else
|
|
# ifdef OS2
|
|
void * os2_alloc(size_t bytes);
|
|
# define GET_MEM(bytes) HBLKPTR((ptr_t)os2_alloc((size_t)bytes \
|
|
+ GC_page_size) \
|
|
+ GC_page_size-1)
|
|
# else
|
|
# if defined(NEXT) || defined(DOS4GW) || \
|
|
(defined(AMIGA) && !defined(GC_AMIGA_FASTALLOC)) || \
|
|
(defined(SUNOS5) && !defined(USE_MMAP))
|
|
# define GET_MEM(bytes) HBLKPTR((size_t) \
|
|
calloc(1, (size_t)bytes + GC_page_size) \
|
|
+ GC_page_size-1)
|
|
# else
|
|
# ifdef MSWIN32
|
|
extern ptr_t GC_win32_get_mem();
|
|
# define GET_MEM(bytes) (struct hblk *)GC_win32_get_mem(bytes)
|
|
# else
|
|
# ifdef MACOS
|
|
# if defined(USE_TEMPORARY_MEMORY)
|
|
extern Ptr GC_MacTemporaryNewPtr(size_t size,
|
|
Boolean clearMemory);
|
|
# define GET_MEM(bytes) HBLKPTR( \
|
|
GC_MacTemporaryNewPtr(bytes + GC_page_size, true) \
|
|
+ GC_page_size-1)
|
|
# else
|
|
# define GET_MEM(bytes) HBLKPTR( \
|
|
NewPtrClear(bytes + GC_page_size) + GC_page_size-1)
|
|
# endif
|
|
# else
|
|
# ifdef MSWINCE
|
|
extern ptr_t GC_wince_get_mem();
|
|
# define GET_MEM(bytes) (struct hblk *)GC_wince_get_mem(bytes)
|
|
# else
|
|
# if defined(AMIGA) && defined(GC_AMIGA_FASTALLOC)
|
|
extern void *GC_amiga_get_mem(size_t size);
|
|
# define GET_MEM(bytes) HBLKPTR((size_t) \
|
|
GC_amiga_get_mem((size_t)bytes + GC_page_size) \
|
|
+ GC_page_size-1)
|
|
# else
|
|
extern ptr_t GC_unix_get_mem();
|
|
# define GET_MEM(bytes) (struct hblk *)GC_unix_get_mem(bytes)
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# endif
|
|
|
|
#endif /* GC_PRIVATE_H */
|
|
|
|
#if defined(_AIX) && !defined(__GNUC__) && !defined(__STDC__)
|
|
/* IBMs xlc compiler doesn't appear to follow the convention of */
|
|
/* defining __STDC__ to be zero in extended mode. */
|
|
# define __STDC__ 0
|
|
#endif
|
|
|
|
# endif /* GCCONFIG_H */
|