* 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 by Hewlett-Packard Company. 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.
# endif
/* And one for FreeBSD: */
-# if defined(__FreeBSD__)
+# if ( defined(__FreeBSD__) || defined(__FreeBSD_kernel__) ) && !defined(FREEBSD)
# define FREEBSD
# endif
# 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
# 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 mach_type_known
# endif
# if defined(sparc) && defined(unix) && !defined(sun) && !defined(linux) \
- && !defined(__OpenBSD__) && !(__NetBSD__)
+ && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__)
# define SPARC
# define DRSNX
# define mach_type_known
# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) \
|| defined(hppa) || defined(__hppa__)
# define HP_PA
-# ifndef LINUX
+# if !defined(LINUX) && !defined(HPUX)
# define HPUX
# endif
# define mach_type_known
# endif
# if defined(__ia64) && defined(_HPUX_SOURCE)
# define IA64
-# define HPUX
+# ifndef HPUX
+# define HPUX
+# endif
# define mach_type_known
# endif
# if defined(__BEOS__) && defined(_X86_)
# define ARM32
# define mach_type_known
# endif
-# if defined(LINUX) && (defined(powerpc) || defined(__powerpc__) || defined(powerpc64) || defined(__powerpc64__))
+# 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
# 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 MACOS
# define mach_type_known
# endif
-# if defined(macosx) || \
- defined(__APPLE__) && defined(__MACH__) && defined(__ppc__)
-# define DARWIN
+# if defined(macosx) || (defined(__APPLE__) && defined(__MACH__))
+# define DARWIN
+# if defined(__ppc__) || defined(__ppc64__)
# define POWERPC
# define mach_type_known
-# endif
-# if defined(__APPLE__) && defined(__MACH__) && defined(__i386__)
-# define DARWIN
+# elif defined(__i386__) || defined(__x86_64)
# define I386
- --> Not really supported, but at least we recognize it.
+# define mach_type_known
+# endif
# endif
# if defined(NeXT) && defined(mc68000)
# define M68K
# 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 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
/* 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_WORD_SZ is a simple integer constant representing the word size.
+ * 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_WORD_SZ is either 32 or 64.
+ * 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_WORD_SZ of 32, not 64. Default is 32.)
+ * 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.
* USE_GENERIC_PUSH_REGS the preferred approach for marking from registers.
*/
# if defined(__GNUC__) && ((__GNUC__ >= 3) || \
- (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
+ (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)) \
+ && !defined(__INTEL_COMPILER) \
+ && !defined(__PATHCC__)
# define HAVE_BUILTIN_UNWIND_INIT
# endif
# ifdef OPENBSD
# define OS_TYPE "OPENBSD"
# define HEURISTIC2
- extern char etext[];
-# define DATASTART ((ptr_t)(etext))
+# 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"
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
-# define USE_MMAP
- /* We never got around to the assembly version. */
+ /* We never got around to the assembly version. */
/* # define MPROTECT_VDB - Reported to not work 9/17/01 */
# ifdef __ELF__
# define DYNAMIC_LOADING
# endif
# endif
-# ifdef POWERPC
+# if defined(POWERPC)
# define MACH_TYPE "POWERPC"
# ifdef MACOS
# define ALIGNMENT 2 /* Still necessary? Could it be 4? */
# define DATAEND /* not needed */
# endif
# ifdef LINUX
-# if (defined (powerpc64) || defined(__powerpc64__))
+# if defined(__powerpc64__)
# define ALIGNMENT 8
# define CPP_WORDSZ 64
+# ifndef HBLKSIZE
+# define HBLKSIZE 4096
+# endif
# else
# define ALIGNMENT 4
# endif
# define DATAEND (_end)
# endif
# ifdef DARWIN
-# define ALIGNMENT 4
+# if defined(__ppc64__) || defined(__x86_64)
+# 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.
# define USE_MMAP_ANON
# define USE_ASM_PUSH_REGS
/* This is potentially buggy. It needs more testing. See the comments in
- os_dep.c */
-# define MPROTECT_VDB
+ 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__)
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"
extern ptr_t GC_SysVGetDataStart();
# ifdef __arch64__
# define DATASTART GC_SysVGetDataStart(0x100000, _etext)
- /* libc_stack_end is not set reliably for sparc64 */
-# define STACKBOTTOM ((ptr_t) 0x80000000000ULL)
# else
# define DATASTART GC_SysVGetDataStart(0x10000, _etext)
-# define LINUX_STACKBOTTOM
# endif
+# define LINUX_STACKBOTTOM
# endif
# ifdef OPENBSD
# define OS_TYPE "OPENBSD"
# 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"
-# define ALIGNMENT 4 /* Appears to hold for all "32 bit" compilers */
+# 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. */
/* possibly because Linux threads is itself a malloc client */
/* and can't deal with the signals. */
# endif
-# define HEAP_START 0x1000
+# 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 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 */
# endif
# ifdef CYGWIN32
# define OS_TYPE "CYGWIN32"
- extern int _data_start__[];
- extern int _data_end__[];
- extern int _bss_start__[];
- extern int _bss_end__[];
- /* For binutils 2.9.1, we have */
- /* DATASTART = _data_start__ */
- /* DATAEND = _bss_end__ */
- /* whereas for some earlier versions it was */
- /* DATASTART = _bss_start__ */
- /* DATAEND = _data_end__ */
- /* To get it right for both, we take the */
- /* minumum/maximum of the two. */
-# ifndef MAX
-# define MAX(x,y) ((x) > (y) ? (x) : (y))
-# endif
-# ifndef MIN
-# define MIN(x,y) ((x) < (y) ? (x) : (y))
-# endif
-# define DATASTART ((ptr_t) MIN(_data_start__, _bss_start__))
-# define DATAEND ((ptr_t) MAX(_data_end__, _bss_end__))
+# define DATASTART ((ptr_t)GC_DATASTART) /* From gc.h */
+# define DATAEND ((ptr_t)GC_DATAEND)
# undef STACK_GRAN
# define STACK_GRAN 0x10000
# define HEURISTIC1
# ifndef GC_FREEBSD_THREADS
# define MPROTECT_VDB
# endif
-# define SIG_SUSPEND SIGUSR1
-# define SIG_THR_RESTART SIGUSR2
+# 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
/* # 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
+ /* 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 -- disabled 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
+# endif /* DARWIN */
# endif
# ifdef NS32K
# define DATAEND /* not needed */
# endif
# if defined(NETBSD)
-# define OS_TYPE "NETBSD"
# define ALIGNMENT 4
+# define OS_TYPE "NETBSD"
# define HEURISTIC2
# define USE_GENERIC_PUSH_REGS
# ifdef __ELF__
# 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.
/* the text segment immediately follows the stack. */
/* Hence we give an upper pound. */
/* This is currently unused, since we disabled HEURISTIC2 */
- extern int __start[];
+ extern int __start[];
# define HEURISTIC2_LIMIT ((ptr_t)((word)(__start) & ~(getpagesize()-1)))
# ifndef GC_OSF1_THREADS
/* Unresolved signal issues with threads. */
# endif
# ifdef LINUX
# define OS_TYPE "LINUX"
-# define STACKBOTTOM ((ptr_t) 0x120000000)
+# define LINUX_STACKBOTTOM
# ifdef __ELF__
# define SEARCH_FOR_DATA_START
# define DYNAMIC_LOADING
/* 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)
/* address minus one page. */
# define BACKING_STORE_DISPLACEMENT 0x1000000
# define BACKING_STORE_ALIGNMENT 0x1000
-# define BACKING_STORE_BASE \
- (ptr_t)(((word)GC_stackbottom - BACKING_STORE_DISPLACEMENT - 1) \
- & ~(BACKING_STORE_ALIGNMENT - 1))
+ 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
/* constants: */
# define BACKING_STORE_ALIGNMENT 0x100000
# define BACKING_STORE_DISPLACEMENT 0x80000000
- extern char * GC_register_stackbottom;
-# define BACKING_STORE_BASE ((ptr_t)GC_register_stackbottom)
+ extern ptr_t GC_register_stackbottom;
+# define BACKING_STORE_BASE GC_register_stackbottom
# define SEARCH_FOR_DATA_START
# ifdef __GNUC__
# define DYNAMIC_LOADING
extern int _end[];
# define DATAEND (_end)
# ifdef __GNUC__
-# define PREFETCH(x) \
- __asm__ (" lfetch [%0]": : "r"((void *)(x)))
-# define PREFETCH_FOR_WRITE(x) \
- __asm__ (" lfetch.excl [%0]": : "r"((void *)(x)))
-# define CLEAR_DOUBLE(x) \
- __asm__ (" stf.spill [%0]=f0": : "r"((void *)(x)))
+# 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 USE_GENERIC_PUSH_REGS
# ifdef UTS4
# define OS_TYPE "UTS4"
- extern int etext[];
+ extern int etext[];
extern int _etext[];
extern int _end[];
extern ptr_t GC_SysVGetDataStart();
# define MACH_TYPE "S390"
# define USE_GENERIC_PUSH_REGS
# ifndef __s390x__
-# define ALIGNMENT 4
-# define CPP_WORDSZ 32
+# define ALIGNMENT 4
+# define CPP_WORDSZ 32
# else
-# define ALIGNMENT 8
-# define CPP_WORDSZ 64
-# define HBLKSIZE 4096
+# 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[];
+ extern int __data_start[];
# define DATASTART ((ptr_t)(__data_start))
extern int _end[];
# define DATAEND (_end)
# endif
# ifdef LINUX
# define OS_TYPE "LINUX"
-# define HEURISTIC1
+# define LINUX_STACKBOTTOM
# undef STACK_GRAN
# define STACK_GRAN 0x10000000
# define USE_GENERIC_PUSH_REGS
# 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
# endif
# ifdef LINUX
# define OS_TYPE "LINUX"
-# define STACKBOTTOM ((ptr_t) 0x7c000000)
+# 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 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
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)
+# 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
+# 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
# 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 */
# define SUNOS5SIGS
# endif
-# if defined(SVR4) || defined(LINUX) || defined(IRIX) || defined(HPUX) \
+# 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(DGUX) || defined(BSD) || defined(SUNOS4) \
|| defined(_AIX) || defined(DARWIN) || defined(OSF1)
# define UNIX_LIKE /* Basic Unix-like system calls work. */
# endif
# define CACHE_LINE_SIZE 32 /* Wild guess */
# endif
-# ifdef LINUX
+# 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 */
# define THREADS
# endif
-# if defined(HP_PA) || defined(M88K) || defined(POWERPC) && !defined(DARWIN) \
- || defined(LINT) || defined(MSWINCE) || defined(ARM32) \
+# 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 */
# 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. */
#if defined(SPARC)
# define CAN_SAVE_CALL_ARGS
#endif
-#if (defined(I386) || defined(X86_64)) && defined(LINUX)
+#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
# else
# if defined(AMIGA) && defined(GC_AMIGA_FASTALLOC)
extern void *GC_amiga_get_mem(size_t size);
-# define GET_MEM(bytes) HBLKPTR((size_t) \
+# define GET_MEM(bytes) HBLKPTR((size_t) \
GC_amiga_get_mem((size_t)bytes + GC_page_size) \
+ GC_page_size-1)
# else
#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 */
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