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[Emacs-diffs]
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From: |
Dave Love |
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Subject: |
[Emacs-diffs] |
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Date: |
Fri, 06 Jun 2003 05:46:20 -0400 |
Index: emacs/gc/include/private/gcconfig.h
diff -c emacs/gc/include/private/gcconfig.h:1.1
emacs/gc/include/private/gcconfig.h:removed
*** emacs/gc/include/private/gcconfig.h:1.1 Thu Jun 5 13:49:21 2003
--- emacs/gc/include/private/gcconfig.h Fri Jun 6 05:46:20 2003
***************
*** 1,2085 ****
- /*
- * 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.
- *
- * 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
-
- /* 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__)
- # define LINUX
- # 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__)
- # define FREEBSD
- # endif
-
- /* Determine the machine type: */
- # if defined(__XSCALE__)
- # define ARM32
- # if !defined(LINUX)
- # 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)
- # define M68K
- # define mach_type_known
- # endif
- # if defined(NETBSD) && defined(__powerpc__)
- # define POWERPC
- # define mach_type_known
- # endif
- # if defined(NETBSD) && defined(__arm32__)
- # define ARM32
- # 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(mips) || defined(__mips) || defined(_mips)
- # define MIPS
- # if defined(nec_ews) || defined(_nec_ews)
- # define EWS4800
- # endif
- # if !defined(LINUX) && !defined(EWS4800)
- # if defined(ultrix) || defined(__ultrix) || defined(__NetBSD__)
- # 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__) && !(__NetBSD__)
- # 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
- # ifndef LINUX
- # define HPUX
- # endif
- # define mach_type_known
- # endif
- # if defined(__ia64) && defined(_HPUX_SOURCE)
- # define IA64
- # define HPUX
- # 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(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(__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__) && defined(__ppc__)
- # define MACOSX
- # define POWERPC
- # define mach_type_known
- # endif
- # if defined(__APPLE__) && defined(__MACH__) && defined(__i386__)
- # define MACOSX
- # define I386
- --> Not really supported, but at least we recognize it.
- # 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(__NetBSD__) && (defined(i386) || defined(__i386__))
- # define I386
- # 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
- # 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 */
-
-
- /*
- * For each architecture and OS, the following need to be defined:
- *
- * CPP_WORD_SZ 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 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.)
- *
- * 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;''
.
- *
- * 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))
- # 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
- extern char etext[];
- # define DATASTART ((ptr_t)(etext))
- # endif
- # ifdef NETBSD
- # define OS_TYPE "NETBSD"
- # define HEURISTIC2
- extern char etext[];
- # define DATASTART ((ptr_t)(etext))
- # endif
- # ifdef LINUX
- # define OS_TYPE "LINUX"
- # define STACKBOTTOM ((ptr_t)0xf0000000)
- /* # 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
-
- # ifdef 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
- # define ALIGNMENT 4 /* Guess. Can someone verify? */
- /* This was 2, but that didn't sound right. */
- # 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
- # undef STACK_GRAN
- # define STACK_GRAN 0x10000000
- /* Stack usually starts at 0x80000000 */
- # define SEARCH_FOR_DATA_START
- extern int _end[];
- # define DATAEND (_end)
- # endif
- # ifdef MACOSX
- /* There are reasons to suspect this may not be reliable. */
- # define ALIGNMENT 4
- # define OS_TYPE "MACOSX"
- # ifdef GC_MACOSX_THREADS
- # define SIG_SUSPEND SIGXCPU
- # define SIG_THR_RESTART SIGXFSZ
- # endif
- # define DYNAMIC_LOADING
- /* XXX: see get_end(3), get_etext() and get_end() should not be used */
- # define DATASTART ((ptr_t) get_etext())
- # define STACKBOTTOM ((ptr_t) 0xc0000000)
- # define DATAEND ((ptr_t) get_end())
- # define USE_MMAP
- # define USE_MMAP_ANON
- /* # define MPROTECT_VDB -- There is some evidence that this breaks
- * on some minor versions of MACOSX, i.e. 10.2.3. In theory,
- * it should be OK */
- # 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
- # 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)
- /* 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
- # 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
- # endif
-
- # ifdef I386
- # define MACH_TYPE "I386"
- # 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. */
- # 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 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
- # 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"
- 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. */
- # define MAX(x,y) ((x) > (y) ? (x) : (y))
- # define MIN(x,y) ((x) < (y) ? (x) : (y))
- # define DATASTART ((ptr_t) MIN(_data_start__, _bss_start__))
- # define DATAEND ((ptr_t) MAX(_data_end__, _bss_end__))
- # 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 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 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))
- # 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
- # 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)
- /* This also checked for __MIPSEL__ . Why? NETBSD recognition */
- /* should be handled at the top of the file. */
- # 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 __64BIT__
- # define ALIGNMENT 8
- # define CPP_WORDSZ 64
- # define STACKBOTTOM 0x1000000000000000
- # else
- # define ALIGNMENT 4
- # define CPP_WORDSZ 32
- # define STACKBOTTOM ((ptr_t)((ulong)&errno))
- # endif
- 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 STACKBOTTOM ((ptr_t) 0x120000000)
- # 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 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
- # define BACKING_STORE_BASE \
- (ptr_t)(((word)GC_stackbottom - BACKING_STORE_DISPLACEMENT - 1) \
- & ~(BACKING_STORE_ALIGNMENT - 1))
- # 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 char * GC_register_stackbottom;
- # define BACKING_STORE_BASE ((ptr_t)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__
- # 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)))
- # endif
- # 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
- # 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
- extern char etext[];
- # define DATASTART ((ptr_t)(etext))
- # define USE_GENERIC_PUSH_REGS
- # endif
- # ifdef LINUX
- # define OS_TYPE "LINUX"
- # define HEURISTIC1
- # 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 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 STACKBOTTOM ((ptr_t) 0x7c000000)
- # define USE_GENERIC_PUSH_REGS
- # define DYNAMIC_LOADING
- # define SEARCH_FOR_DATA_START
- extern int _end[];
- # define DATAEND (_end)
- # endif
- # endif
-
- # ifdef SH4
- # define MACH_TYPE "SH4"
- # define OS_TYPE "MSWINCE"
- # define ALIGNMENT 4
- # define DATAEND /* not needed */
- # 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
- # define PREFETCH(x) \
- __asm__ __volatile__ (" prefetch %0": : "m"(*(char
*)(x)))
- # define PREFETCH_FOR_WRITE(x) \
- __asm__ __volatile__ (" prefetchw %0": : "m"(*(char
*)(x)))
- # endif
- # 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(SVR4) || defined(LINUX) || defined(IRIX) || defined(HPUX) \
- || defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) ||
defined(DGUX) \
- || defined(BSD) || defined(AIX) || defined(MACOSX) || 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) && defined(GC_PRIVATE_H)
- 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_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(MACOSX) \
- || defined(LINT) || defined(MSWINCE) || defined(ARM32) \
- || (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(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
- # ifdef GC_PRIVATE_H
- extern ptr_t GC_win32_get_mem();
- # endif
- # 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
- # ifdef GC_PRIVATE_H
- extern ptr_t GC_wince_get_mem();
- # endif
- # 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
- # ifdef GC_PRIVATE_H
- extern ptr_t GC_unix_get_mem();
- # endif
- # define GET_MEM(bytes) (struct hblk *)GC_unix_get_mem(bytes)
- # endif
- # endif
- # endif
- # endif
- # endif
- # endif
- # endif
-
- #endif /* GC_PRIVATE_H */
-
- # endif /* GCCONFIG_H */
--- 0 ----
- [Emacs-diffs], (continued)
- [Emacs-diffs], Kenichi Handa, 2003/06/05
- [Emacs-diffs], Kenichi Handa, 2003/06/05
- [Emacs-diffs], Kenichi Handa, 2003/06/06
- [Emacs-diffs], Dave Love, 2003/06/06
- [Emacs-diffs], Dave Love, 2003/06/06
- [Emacs-diffs], Dave Love, 2003/06/06
- [Emacs-diffs], Dave Love, 2003/06/06
- [Emacs-diffs], Dave Love, 2003/06/06
- [Emacs-diffs], Dave Love, 2003/06/06
- [Emacs-diffs], Dave Love, 2003/06/06
- [Emacs-diffs],
Dave Love <=
- [Emacs-diffs], Dave Love, 2003/06/06