+++ /dev/null
-/*
- * 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)
-# define FREEBSD
-# endif
-
-/* And one for Darwin: */
-# if defined(macosx) || (defined(__APPLE__) && defined(__MACH__))
-# define DARWIN
-# endif
-
-/* Determine the machine type: */
-# if defined(__arm__) || defined(__thumb__)
-# define ARM32
-# if !defined(LINUX) && !defined(NETBSD) && !defined(DARWIN)
-# 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(__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
-# ifdef DARWIN
-# if defined(__ppc__) || defined(__ppc64__)
-# define POWERPC
-# define mach_type_known
-# elif defined(__i386__)
-# define I386
-# define mach_type_known
-# define DARWIN_DONT_PARSE_STACK
-# define OS_TYPE "DARWIN"
-# 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
- /* This is potentially buggy. It needs more testing. See the comments in
- os_dep.c. It relies on threads to track writes. */
-# ifdef GC_DARWIN_THREADS
-/* # define MPROTECT_VDB -- diabled for now. May work for some apps. */
-# 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
-# elif defined(__arm__)
-# define ARM
-# define mach_type_known
-# define DARWIN_DONT_PARSE_STACK
-# define GC_DONT_REGISTER_MAIN_STATIC_DATA
-# 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__)
-# if defined(__LP64__) || defined(_WIN64)\r
-# define X86_64\r
-# else\r
-# define I386\r
-# endif\r
-# define MSWIN32 /* or Win64 */\r
-# define mach_type_known\r
-# endif\r
-# if defined(_MSC_VER) && defined(_M_IA64)\r
-# define IA64\r
-# define MSWIN32 /* Really win64, but we don't treat 64-bit */\r
- /* variants as a differnt platform. */\r
-# 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 STACKBOTTOM ((ptr_t)0xf0000000)
-# define USE_GENERIC_PUSH_REGS
- /* We never got around to the assembly version. */
-/* # define MPROTECT_VDB - Reported to not work 9/17/01 */
-# 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
-\r
-# 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
-# ifdef __ppc64__
-# define ALIGNMENT 8
-# define CPP_WORDSZ 64
-# else
-# define ALIGNMENT 4
-# endif
-# define OS_TYPE "DARWIN"
-# 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
- /* This is potentially buggy. It needs more testing. See the comments in
- os_dep.c. It relies on threads to track writes. */
-# ifdef GC_DARWIN_THREADS
-/* # define MPROTECT_VDB -- diabled for now. May work for some apps. */
-# 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 SN_TARGET_PS3\r
-# define NO_GETENV\r
-# define CPP_WORDSZ 32\r
-# define ALIGNMENT 4\r
- extern int _end [];\r
-// extern int _dso_handle[];\r
- extern int __bss_start;\r
-\r
-# define DATAEND (_end)\r
-# define DATASTART (__bss_start)\r
-# define STACKBOTTOM ((ptr_t) ps3_get_stack_bottom ())
-# define USE_GENERIC_PUSHREGS\r
-# endif\r
-\r
-# 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 _FILE_OFFSET_BITS
-# undef _FILE_OFFSET_BITS /* libelf.h & procfs.h doesn't compile with large file support */
-# define _FILE_OFFSET_BITS 32
-# endif
-# 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
-# define SVR4
-# 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)
-# 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
-/* Reading of dirty bits doesn't seem to work even in solaris 10 */
-/*# 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
-# define SIG_SUSPEND SIGTSTP
-# define SIG_THR_RESTART SIGCONT
-# 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
-# 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))
-# if defined(_MIPS_SZPTR) && (_MIPS_SZPTR == 64)
-# define ALIGNMENT 8
-# define CPP_WORDSZ 64
-# else
-# define ALIGNMENT 4
-# endif
-# 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 SIGTSTP
-# define SIG_THR_RESTART SIGCONT
-# 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
-# elif defined(PLATFORM_ANDROID)
-# 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 DARWIN
-# define OS_TYPE "DARWIN"
-# define DATASTART ((ptr_t) get_etext())
-# define DATAEND ((ptr_t) get_end())
-# define STACKBOTTOM ((ptr_t) 0x30000000)
-# define USE_MMAP
-# define USE_MMAP_ANON
-# define USE_MUNMAP
-# 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
-# ifndef USE_MMAP
-# define FALLBACK_TO_MMAP
-# 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
-# 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 FREEBSD
-# define OS_TYPE "FREEBSD"
-# ifndef GC_FREEBSD_THREADS
-# define MPROTECT_VDB
-# endif
-# define SIG_SUSPEND SIGTSTP
-# define SIG_THR_RESTART SIGCONT
-# define NEED_FIND_LIMIT
-# 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
-# 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)
-# 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
-
-# ifdef LINUX
-# 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 */
-
- /* Internally we use GC_SOLARIS_THREADS to test for either old or pthreads. */
-# if defined(GC_SOLARIS_PTHREADS) && !defined(GC_SOLARIS_THREADS)
-# define GC_SOLARIS_THREADS
-# endif
-
-# 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)
- /* 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
-# if defined(SN_TARGET_PS3)\r
- extern void *ps3_get_mem (size_t size);\r
-# define GET_MEM(bytes) (struct hblk*) ps3_get_mem (bytes)\r
-# else\r
- extern ptr_t GC_unix_get_mem();
-# define GET_MEM(bytes) (struct hblk *)GC_unix_get_mem(bytes)
-#endif\r
-# 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 */
projects / mono.git / commitdiff