1341 lines
40 KiB
C
1341 lines
40 KiB
C
/*
|
|
* Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
|
|
* Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
|
|
* Copyright (c) 1996 by Silicon Graphics. All rights reserved.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#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
|
|
|
|
/* Determine the machine type: */
|
|
# 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 OPENBSD
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__OpenBSD__) && defined(__sparc__)
|
|
# define SPARC
|
|
# define OPENBSD
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__NetBSD__) && defined(m68k)
|
|
# define M68K
|
|
# define NETBSD
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__NetBSD__) && defined(arm32)
|
|
# define ARM32
|
|
# define NETBSD
|
|
# 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)
|
|
# define MIPS
|
|
# if !defined(LINUX)
|
|
# 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 */
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(sequent) && defined(i386)
|
|
# define I386
|
|
# define SEQUENT
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(sun) && 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__)
|
|
# define SPARC
|
|
# define DRSNX
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(_IBMR2)
|
|
# define RS6000
|
|
# 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(LINUX) && (defined(i386) || defined(__i386__))
|
|
# define I386
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && (defined(__ia64__) || defined(__ia64))
|
|
# define IA64
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(LINUX) && 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(__alpha) || defined(__alpha__)
|
|
# define ALPHA
|
|
# if !defined(LINUX)
|
|
# 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)
|
|
# define POWERPC
|
|
# define MACOS
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(macosx)
|
|
# define MACOSX
|
|
# define POWERPC
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(NeXT) && defined(mc68000)
|
|
# define M68K
|
|
# define NEXT
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(NeXT) && defined(i386)
|
|
# define I386
|
|
# define NEXT
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__OpenBSD__) && defined(i386)
|
|
# define I386
|
|
# define OPENBSD
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__FreeBSD__) && defined(i386)
|
|
# define I386
|
|
# define FREEBSD
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__NetBSD__) && defined(i386)
|
|
# define I386
|
|
# define NETBSD
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(bsdi) && 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)
|
|
# define M88K
|
|
/* DGUX defined */
|
|
# define mach_type_known
|
|
# endif
|
|
# if (defined(_MSDOS) || defined(_MSC_VER)) && (_M_IX86 >= 300) \
|
|
|| defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__CYGWIN__)
|
|
# define I386
|
|
# define MSWIN32 /* or Win32s */
|
|
# define mach_type_known
|
|
# endif
|
|
# if defined(__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
|
|
/* 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
|
|
|
|
/* 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 */
|
|
/* SPARC ==> SPARC under SunOS */
|
|
/* (SUNOS4, SUNOS5, */
|
|
/* DRSNX variants) */
|
|
/* ALPHA ==> DEC Alpha */
|
|
/* (OSF1 and LINUX variants) */
|
|
/* M88K ==> Motorola 88XX0 */
|
|
/* (CX_UX and DGUX) */
|
|
/* S370 ==> 370-like machine */
|
|
/* running Amdahl UTS4 */
|
|
/* ARM32 ==> Intel StrongARM */
|
|
/* IA64 ==> Intel IA64 */
|
|
/* (e.g. Itanium) */
|
|
|
|
|
|
/*
|
|
* 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 UNIX systems, the collector will scan the area between DATASTART
|
|
* and DATAEND for root pointers.
|
|
*
|
|
* DATAEND, if not &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)
|
|
* HEURISTIC1
|
|
* HEURISTIC2
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
|
|
# 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
|
|
# ifdef __ELF__
|
|
# define DYNAMIC_LOADING
|
|
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. */
|
|
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"
|
|
# define HEURISTIC1
|
|
# define DYNAMIC_LOADING
|
|
# undef STACK_GRAN
|
|
# define STACK_GRAN 0x10000000
|
|
/* Stack usually starts at 0x80000000 */
|
|
# define LINUX_DATA_START
|
|
extern int _end;
|
|
# define DATAEND (&_end)
|
|
# endif
|
|
# ifdef MACOSX
|
|
# define ALIGNMENT 4
|
|
# define OS_TYPE "MACOSX"
|
|
# define DATASTART ((ptr_t) get_etext())
|
|
# define STACKBOTTOM ((ptr_t) 0xc0000000)
|
|
# define DATAEND /* not needed */
|
|
# 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"
|
|
# define ALIGNMENT 4 /* Required by hardware */
|
|
# define ALIGN_DOUBLE
|
|
extern int etext;
|
|
# ifdef SUNOS5
|
|
# define OS_TYPE "SUNOS5"
|
|
extern int _etext;
|
|
extern int _end;
|
|
extern char * GC_SysVGetDataStart();
|
|
# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext)
|
|
# define DATAEND (&_end)
|
|
# ifndef USE_MMAP
|
|
# define USE_MMAP
|
|
# 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. Thus we */
|
|
/* switched to HEURISTIC2, eventhough it creates some debugging */
|
|
/* issues. */
|
|
# define HEURISTIC2
|
|
# 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 CPP_WORDSZ 32
|
|
# define OS_TYPE "DRSNX"
|
|
extern char * GC_SysVGetDataStart();
|
|
extern int etext;
|
|
# define DATASTART (ptr_t)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 LINUX_DATA_START
|
|
# define DYNAMIC_LOADING
|
|
# else
|
|
Linux Sparc non elf ?
|
|
# endif
|
|
extern int _end;
|
|
# define DATAEND (&_end)
|
|
# define SVR4
|
|
# define STACKBOTTOM ((ptr_t) 0xf0000000)
|
|
# endif
|
|
# ifdef OPENBSD
|
|
# define OS_TYPE "OPENBSD"
|
|
# define STACKBOTTOM ((ptr_t) 0xf8000000)
|
|
# define DATASTART ((ptr_t)(&etext))
|
|
# 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 SEQUENT
|
|
# define OS_TYPE "SEQUENT"
|
|
extern int etext;
|
|
# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
|
|
# define STACKBOTTOM ((ptr_t) 0x3ffff000)
|
|
# endif
|
|
# ifdef SUNOS5
|
|
# define OS_TYPE "SUNOS5"
|
|
extern int etext, _start;
|
|
extern char * GC_SysVGetDataStart();
|
|
# define DATASTART GC_SysVGetDataStart(0x1000, &etext)
|
|
# define STACKBOTTOM ((ptr_t)(&_start))
|
|
/** At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */
|
|
/*# define PROC_VDB*/
|
|
# define DYNAMIC_LOADING
|
|
# ifndef USE_MMAP
|
|
# define USE_MMAP
|
|
# 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 LINUX
|
|
# 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(LINUX_THREADS) || !defined(REDIRECT_MALLOC)
|
|
/* libgcj: Linux threads don't interact well with the read() wrapper.
|
|
Not defining MPROTECT_VDB fixes this. */
|
|
/* # 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>
|
|
# if defined(__GLIBC__) && __GLIBC__ >= 2
|
|
# define LINUX_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 */
|
|
# 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 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"
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# ifdef NETBSD
|
|
# define OS_TYPE "NETBSD"
|
|
# endif
|
|
# ifdef THREE86BSD
|
|
# define OS_TYPE "THREE86BSD"
|
|
# endif
|
|
# ifdef BSDI
|
|
# define OS_TYPE "BSDI"
|
|
# endif
|
|
# if defined(OPENBSD) || defined(FREEBSD) || 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
|
|
# 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
|
|
# ifndef ECOS
|
|
# define MACH_TYPE "MIPS"
|
|
/* LIBGCJ LOCAL: respect predefined DATASTART_IS_ETEXT. */
|
|
# ifdef DATASTART_IS_ETEXT
|
|
extern int _etext;
|
|
# define DATASTART ((ptr_t)(&_etext))
|
|
# else
|
|
/* # define STACKBOTTOM ((ptr_t)0x7fff8000) sometimes also works. */
|
|
# ifdef LINUX
|
|
/* This was developed for a linuxce style platform. Probably */
|
|
/* needs to be tweaked for workstation class machines. */
|
|
# define OS_TYPE "LINUX"
|
|
extern int __data_start;
|
|
# define DATASTART ((ptr_t)(&__data_start))
|
|
# define ALIGNMENT 4
|
|
# define USE_GENERIC_PUSH_REGS 1
|
|
# define STACKBOTTOM 0x80000000
|
|
/* In many cases, this should probably use LINUX_STACKBOTTOM */
|
|
/* instead. But some kernel versions seem to give the wrong */
|
|
/* value from /proc. */
|
|
# endif /* Linux */
|
|
# 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
|
|
# endif /* DATASTART_IS_ETEXT */
|
|
# endif /* ECOS */
|
|
# ifdef ECOS
|
|
extern char __ram_data_start;
|
|
extern char __ram_data_end;
|
|
# define MACH_TYPE "MIPS"
|
|
# define DATASTART (ptr_t)(&__ram_data_start)
|
|
# define DATAEND (ptr_t)(&__ram_data_end)
|
|
|
|
# define HEURISTIC2
|
|
# define ALIGNMENT 4
|
|
# define ALIGN_DOUBLE
|
|
# endif /* ECOS */
|
|
# endif
|
|
|
|
# ifdef RS6000
|
|
# define MACH_TYPE "RS6000"
|
|
# define ALIGNMENT 4
|
|
# define DATASTART ((ptr_t)0x20000000)
|
|
extern int errno;
|
|
# define STACKBOTTOM ((ptr_t)((ulong)&errno))
|
|
# define DYNAMIC_LOADING
|
|
/* For really old versions of AIX, this may have to be removed. */
|
|
# endif
|
|
|
|
# ifdef HP_PA
|
|
/* OS is assumed to be HP/UX */
|
|
# define MACH_TYPE "HP_PA"
|
|
# define OS_TYPE "HPUX"
|
|
# ifdef __LP64__
|
|
# define CPP_WORDSZ 64
|
|
# define ALIGNMENT 8
|
|
# else
|
|
# define CPP_WORDSZ 32
|
|
# define ALIGNMENT 4
|
|
# define ALIGN_DOUBLE
|
|
# endif
|
|
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
|
|
# define HEURISTIC2
|
|
# endif
|
|
# define STACK_GROWS_UP
|
|
# define DYNAMIC_LOADING
|
|
# ifndef HPUX_THREADS
|
|
# define MPROTECT_VDB
|
|
# endif
|
|
# include <unistd.h>
|
|
# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
|
|
# endif
|
|
|
|
# ifdef ALPHA
|
|
# define MACH_TYPE "ALPHA"
|
|
# define ALIGNMENT 8
|
|
# 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. */
|
|
# ifdef OSF1
|
|
# define OS_TYPE "OSF1"
|
|
# define DATASTART ((ptr_t) 0x140000000)
|
|
extern _end;
|
|
# define DATAEND ((ptr_t) &_end)
|
|
# define HEURISTIC2
|
|
/* Normally HEURISTIC2 is too conervative, since */
|
|
/* the text segment immediately follows the stack. */
|
|
/* Hence we give an upper pound. */
|
|
extern int __start;
|
|
# define HEURISTIC2_LIMIT ((ptr_t)((word)(&__start) & ~(getpagesize()-1)))
|
|
# define CPP_WORDSZ 64
|
|
# define MPROTECT_VDB
|
|
# define DYNAMIC_LOADING
|
|
# endif
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define CPP_WORDSZ 64
|
|
# define STACKBOTTOM ((ptr_t) 0x120000000)
|
|
# ifdef __ELF__
|
|
# define LINUX_DATA_START
|
|
# define DYNAMIC_LOADING
|
|
/* This doesn't work if the collector is in a dynamic library. */
|
|
# else
|
|
# define DATASTART ((ptr_t) 0x140000000)
|
|
# endif
|
|
extern int _end;
|
|
# define DATAEND (&_end)
|
|
# undef MPROTECT_VDB
|
|
/* Has only been superficially tested. May not */
|
|
/* work on all versions. */
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef IA64
|
|
# define MACH_TYPE "IA64"
|
|
# define ALIGN_DOUBLE
|
|
/* Requires 16 byte alignment for malloc */
|
|
# define ALIGNMENT 8
|
|
# define USE_GENERIC_PUSH_REGS
|
|
/* We need to get preserved registers in addition to register windows. */
|
|
/* That's easiest to do with setjmp. */
|
|
# ifdef HPUX
|
|
--> needs work
|
|
# endif
|
|
# ifdef LINUX
|
|
# define OS_TYPE "LINUX"
|
|
# define CPP_WORDSZ 64
|
|
/* This should really be done through /proc, but that */
|
|
/* requires we run on an IA64 kernel. */
|
|
# define STACKBOTTOM ((ptr_t) 0xa000000000000000l)
|
|
/* We also need the base address of the register stack */
|
|
/* backing store. There is probably a better way to */
|
|
/* get that, too ... */
|
|
# define BACKING_STORE_BASE ((ptr_t) 0x9fffffff80000000l)
|
|
# if 1
|
|
# define SEARCH_FOR_DATA_START
|
|
# define DATASTART GC_data_start
|
|
# else
|
|
extern int data_start;
|
|
# define DATASTART ((ptr_t)(&data_start))
|
|
# endif
|
|
# define DYNAMIC_LOADING
|
|
# define MPROTECT_VDB
|
|
/* Requires Linux 2.3.47 or later. */
|
|
extern int _end;
|
|
# define DATAEND (&_end)
|
|
/* PREFETCH appears to have a large performance impact. */
|
|
# 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
|
|
|
|
# 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 char * GC_SysVGetDataStart();
|
|
# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext)
|
|
# endif
|
|
# define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */
|
|
# endif
|
|
|
|
# ifdef S370
|
|
# define MACH_TYPE "S370"
|
|
# define OS_TYPE "UTS4"
|
|
# define ALIGNMENT 4 /* Required by hardware */
|
|
extern int etext;
|
|
extern int _etext;
|
|
extern int _end;
|
|
extern char * GC_SysVGetDataStart();
|
|
# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext)
|
|
# define DATAEND (&_end)
|
|
# define HEURISTIC2
|
|
# 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 LINUX_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
|
|
#endif
|
|
|
|
#ifdef LINUX_DATA_START
|
|
/* Some Linux distributions arrange to define __data_start. Some */
|
|
/* define data_start as a weak symbol. The latter is technically */
|
|
/* broken, since the user program may define data_start, in which */
|
|
/* case we lose. Nonetheless, we try both, prefering __data_start. */
|
|
/* We assume gcc. */
|
|
# pragma weak __data_start
|
|
extern int __data_start;
|
|
# pragma weak data_start
|
|
extern int data_start;
|
|
# define DATASTART ((ptr_t)(&__data_start != 0? &__data_start : &data_start))
|
|
#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 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
|
|
|
|
# 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
|
|
|
|
# ifndef CLEAR_DOUBLE
|
|
# define CLEAR_DOUBLE(x) \
|
|
((word*)x)[0] = 0; \
|
|
((word*)x)[1] = 0;
|
|
# endif /* CLEAR_DOUBLE */
|
|
|
|
# if defined(_SOLARIS_PTHREADS) && !defined(SOLARIS_THREADS)
|
|
# define SOLARIS_THREADS
|
|
# endif
|
|
# if defined(IRIX_THREADS) && !defined(IRIX5)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(IRIX_JDK_THREADS) && !defined(IRIX5)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(LINUX_THREADS) && !defined(LINUX)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(SOLARIS_THREADS) && !defined(SUNOS5)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(HPUX_THREADS) && !defined(HPUX)
|
|
--> inconsistent configuration
|
|
# endif
|
|
# if defined(PCR) || defined(SRC_M3) || \
|
|
defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || \
|
|
defined(IRIX_THREADS) || defined(LINUX_THREADS) || \
|
|
defined(IRIX_JDK_THREADS) || defined(HPUX_THREADS)
|
|
# define THREADS
|
|
# endif
|
|
|
|
# if defined(HP_PA) || defined(M88K) || defined(POWERPC) \
|
|
|| (defined(I386) && defined(OS2)) || defined(UTS4) || defined(LINT)
|
|
/* Use setjmp based hack to mark from callee-save registers. */
|
|
# define USE_GENERIC_PUSH_REGS
|
|
# endif
|
|
# if defined(SPARC) && !defined(LINUX)
|
|
# define SAVE_CALL_CHAIN
|
|
# define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */
|
|
/* include assembly code to do it well. */
|
|
# endif
|
|
|
|
# endif /* GCCONFIG_H */
|