diff options
Diffstat (limited to 'gc/include/private/gcconfig.h')
| -rw-r--r-- | gc/include/private/gcconfig.h | 776 |
1 files changed, 668 insertions, 108 deletions
diff --git a/gc/include/private/gcconfig.h b/gc/include/private/gcconfig.h index c9017d3..a0d12c8 100644 --- a/gc/include/private/gcconfig.h +++ b/gc/include/private/gcconfig.h @@ -2,6 +2,7 @@ * 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. @@ -13,9 +14,9 @@ * modified is included with the above copyright notice. */ -#ifndef CONFIG_H +#ifndef GCCONFIG_H -# define CONFIG_H +# define GCCONFIG_H /* Machine dependent parameters. Some tuning parameters can be found */ /* near the top of gc_private.h. */ @@ -27,6 +28,11 @@ # define LINUX # endif +/* And one for NetBSD: */ +# if defined(__NetBSD__) +# define NETBSD +# endif + /* Determine the machine type: */ # if defined(sun) && defined(mc68000) # define M68K @@ -50,7 +56,14 @@ # endif # if defined(__NetBSD__) && defined(m68k) # define M68K -# define NETBSD +# 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) @@ -64,23 +77,29 @@ # endif # if defined(mips) || defined(__mips) # define MIPS -# 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 +# 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 */ +# if defined(__NetBSD__) && defined(__MIPSEL__) +# undef ULTRIX # endif # define mach_type_known # endif -# if defined(sequent) && defined(i386) +# if defined(sequent) && (defined(i386) || defined(__i386__)) # define I386 # define SEQUENT # define mach_type_known # endif -# if defined(sun) && defined(i386) +# if defined(sun) && (defined(i386) || defined(__i386__)) # define I386 # define SUNOS5 # define mach_type_known @@ -106,7 +125,7 @@ # define mach_type_known # endif # if defined(sparc) && defined(unix) && !defined(sun) && !defined(linux) \ - && !defined(__OpenBSD__) + && !defined(__OpenBSD__) && !(__NetBSD__) # define SPARC # define DRSNX # define mach_type_known @@ -115,6 +134,10 @@ # 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 @@ -130,16 +153,28 @@ # define SYSV # define mach_type_known # endif -# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) \ +# 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(__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(powerpc) +# if defined(LINUX) && (defined(__ia64__) || defined(__ia64)) +# define IA64 +# define mach_type_known +# endif +# if defined(LINUX) && (defined(powerpc) || defined(__powerpc__)) # define POWERPC # define mach_type_known # endif @@ -147,13 +182,21 @@ # define M68K # define mach_type_known # endif -# if defined(LINUX) && defined(sparc) +# 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) +# if !defined(LINUX) && !defined(NETBSD) # define OSF1 /* a.k.a Digital Unix */ # endif # define mach_type_known @@ -175,37 +218,42 @@ # define MACOS # define mach_type_known # endif -# if defined(macosx) +# 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) +# if defined(NeXT) && (defined(i386) || defined(__i386__)) # define I386 # define NEXT # define mach_type_known # endif -# if defined(__OpenBSD__) && defined(i386) +# if defined(__OpenBSD__) && (defined(i386) || defined(__i386__)) # define I386 # define OPENBSD # define mach_type_known # endif -# if defined(__FreeBSD__) && defined(i386) +# if defined(__FreeBSD__) && (defined(i386) || defined(__i386__)) # define I386 # define FREEBSD # define mach_type_known # endif -# if defined(__NetBSD__) && defined(i386) +# if defined(__NetBSD__) && (defined(i386) || defined(__i386__)) # define I386 -# define NETBSD # define mach_type_known # endif -# if defined(bsdi) && defined(i386) +# if defined(bsdi) && (defined(i386) || defined(__i386__)) # define I386 # define BSDI # define mach_type_known @@ -225,11 +273,26 @@ /* 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 */ +# 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 @@ -243,6 +306,11 @@ # 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 @@ -253,6 +321,15 @@ # 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 @@ -269,6 +346,18 @@ # endif # define mach_type_known # endif +# if defined(__s390__) && defined(LINUX) +# define S370 +# 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 */ @@ -297,9 +386,9 @@ /* RS6000 ==> IBM RS/6000 AIX3.X */ /* RT ==> IBM PC/RT */ /* HP_PA ==> HP9000/700 & /800 */ - /* HP/UX */ - /* SPARC ==> SPARC under SunOS */ - /* (SUNOS4, SUNOS5, */ + /* HP/UX, LINUX */ + /* SPARC ==> SPARC v7/v8/v9 */ + /* (SUNOS4, SUNOS5, LINUX, */ /* DRSNX variants) */ /* ALPHA ==> DEC Alpha */ /* (OSF1 and LINUX variants) */ @@ -307,6 +396,12 @@ /* (CX_UX and DGUX) */ /* S370 ==> 370-like machine */ /* running Amdahl UTS4 */ + /* or a 390 running LINUX */ + /* ARM32 ==> Intel StrongARM */ + /* IA64 ==> Intel IA64 */ + /* (e.g. Itanium) */ + /* SH ==> Hitachi SuperH */ + /* (LINUX & MSWINCE) */ /* @@ -355,6 +450,13 @@ * 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: @@ -392,8 +494,25 @@ * * 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. */ +/* 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 @@ -417,8 +536,12 @@ # define MPROTECT_VDB # ifdef __ELF__ # define DYNAMIC_LOADING - extern char **__environ; -# define DATASTART ((ptr_t)(&__environ)) +# include <features.h> +# if defined(__GLIBC__)&& __GLIBC__>=2 +# define LINUX_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 */ @@ -427,6 +550,7 @@ /* 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 @@ -513,19 +637,43 @@ /* 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 DATASTART GC_data_start +# define LINUX_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" # define DATASTART ((ptr_t) get_etext()) # define STACKBOTTOM ((ptr_t) 0xc0000000) # define DATAEND /* not needed */ +# define MPROTECT_VDB +# include <unistd.h> +# define GETPAGESIZE() getpagesize() +# 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 @@ -554,9 +702,12 @@ # ifdef SPARC # define MACH_TYPE "SPARC" -# define ALIGNMENT 4 /* Required by hardware */ +# if defined(__arch64__) || defined(__sparcv9) +# define ALIGNMENT 8 +# else +# define ALIGNMENT 4 /* Required by hardware */ +# endif # define ALIGN_DOUBLE - extern int etext; # ifdef SUNOS5 # define OS_TYPE "SUNOS5" extern int _etext; @@ -573,10 +724,18 @@ # 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 +/* 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 */ @@ -615,21 +774,40 @@ # ifdef LINUX # define OS_TYPE "LINUX" # ifdef __ELF__ -# define DATASTART GC_data_start -# define DYNAMIC_LOADING +# define DYNAMIC_LOADING # else - Linux Sparc non elf ? + Linux Sparc/a.out not supported # endif extern int _end; + extern int _etext; # define DATAEND (&_end) # define SVR4 -# define STACKBOTTOM ((ptr_t) 0xf0000000) +# ifdef __arch64__ +# define STACKBOTTOM ((ptr_t) 0x80000000000ULL) +# define DATASTART (ptr_t)GC_SysVGetDataStart(0x100000, &_etext) +# define CPP_WORDSZ 64 +# else +# define STACKBOTTOM ((ptr_t) 0xf0000000) +# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext) +# 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 @@ -642,18 +820,34 @@ # 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, _start; extern char * GC_SysVGetDataStart(); # define DATASTART GC_SysVGetDataStart(0x1000, &etext) -# define STACKBOTTOM ((ptr_t)(&_start)) +/* # 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/vmparam.h> +# define STACKBOTTOM USRSTACK /** At least in Solaris 2.5, PROC_VDB gives wrong values for dirty bits. */ /*# define PROC_VDB*/ # define DYNAMIC_LOADING @@ -684,13 +878,16 @@ # endif # ifdef LINUX # define OS_TYPE "LINUX" -# 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. */ +# 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) # define MPROTECT_VDB # else @@ -706,8 +903,7 @@ # endif # include <features.h> # if defined(__GLIBC__) && __GLIBC__ >= 2 - extern int __data_start; -# define DATASTART ((ptr_t)(&__data_start)) +# define LINUX_DATA_START # else extern char **__environ; # define DATASTART ((ptr_t)(&__environ)) @@ -726,6 +922,26 @@ 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" @@ -755,6 +971,7 @@ /* 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" @@ -765,6 +982,10 @@ # 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" @@ -783,6 +1004,7 @@ # ifdef FREEBSD # define OS_TYPE "FREEBSD" # define MPROTECT_VDB +# define FREEBSD_STACKBOTTOM # endif # ifdef NETBSD # define OS_TYPE "NETBSD" @@ -793,7 +1015,7 @@ # ifdef BSDI # define OS_TYPE "BSDI" # endif -# if defined(OPENBSD) || defined(FREEBSD) || defined(NETBSD) \ +# if defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) \ || defined(THREE86BSD) || defined(BSDI) # define HEURISTIC2 extern char etext; @@ -820,6 +1042,17 @@ # 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 @@ -836,35 +1069,48 @@ # ifdef MIPS # define MACH_TYPE "MIPS" -# ifndef IRIX5 -# define DATASTART (ptr_t)0x10000000 +# 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 +# define STACKBOTTOM ((ptr_t)0x7fff8000) + /* Older toolchains may need 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. */ -# else - 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. */ -# endif /* IRIX5 */ -# define HEURISTIC2 -/* # define STACKBOTTOM ((ptr_t)0x7fff8000) sometimes also works. */ -# ifdef ULTRIX # 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 @@ -879,6 +1125,28 @@ # 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 @@ -893,11 +1161,34 @@ # ifdef HP_PA # define MACH_TYPE "HP_PA" -# define ALIGNMENT 4 -# define ALIGN_DOUBLE - extern int __data_start; -# define DATASTART ((ptr_t)(&__data_start)) -# if 0 +# 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 +# if !defined(GC_HPUX_THREADS) && !defined(HPUX_THREADS) \ + && !defined(GC_LINUX_THREADS) && !defined(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 + 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 */ @@ -906,28 +1197,66 @@ /* 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 -# include <unistd.h> -# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE) - /* They misspelled the Posix macro? */ -# endif +# 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 LINUX_DATA_START + extern int _end; +# define DATAEND (&_end) +# endif /* LINUX */ +# endif /* HP_PA */ # 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 NETBSD +# define OS_TYPE "NETBSD" +# define HEURISTIC2 +# define DATASTART GC_data_start +# define ELFCLASS32 32 +# define ELFCLASS64 64 +# define ELF_CLASS ELFCLASS64 +# define CPP_WORDSZ 64 +# define DYNAMIC_LOADING +# endif # ifdef OSF1 # define OS_TYPE "OSF1" # define DATASTART ((ptr_t) 0x140000000) - extern _end; + extern int _end; # define DATAEND ((ptr_t) &_end) -# define HEURISTIC2 + 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))) # define CPP_WORDSZ 64 @@ -939,12 +1268,8 @@ # define CPP_WORDSZ 64 # define STACKBOTTOM ((ptr_t) 0x120000000) # ifdef __ELF__ -# if 0 - /* __data_start apparently disappeared in some recent releases. */ - extern int __data_start; -# define DATASTART &__data_start -# endif -# define DATASTART GC_data_start +# define SEARCH_FOR_DATA_START +# define DATASTART GC_data_start # define DYNAMIC_LOADING # else # define DATASTART ((ptr_t) 0x140000000) @@ -957,6 +1282,55 @@ # 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 PARALLEL_MARK +# define USE_MARK_BYTES + /* Compare-and-exchange is too expensive to use for */ + /* setting mark bits. */ +# endif +# ifdef HPUX + --> needs work +# endif +# ifdef LINUX +# define OS_TYPE "LINUX" +# define CPP_WORDSZ 64 + /* 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 +# define DATASTART GC_data_start +# define DYNAMIC_LOADING +# 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 @@ -976,17 +1350,127 @@ # ifdef S370 # define MACH_TYPE "S370" -# define OS_TYPE "UTS4" # define ALIGNMENT 4 /* Required by hardware */ - extern int etext; +# define USE_GENERIC_PUSH_REGS +# ifdef UTS4 +# define OS_TYPE "UTS4" + 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 +# ifdef LINUX +# define OS_TYPE "LINUX" +# define HEURISTIC1 +# define DYNAMIC_LOADING + extern int __data_start; +# define DATASTART ((ptr_t)(&__data_start)) +# 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 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 +# ifdef MSWINCE +# define OS_TYPE "MSWINCE" +# define DATAEND /* not needed */ +# 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 LINUX_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 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 +#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 @@ -1029,6 +1513,16 @@ # 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(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 @@ -1059,41 +1553,107 @@ # 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 + +# ifndef CLEAR_DOUBLE +# define CLEAR_DOUBLE(x) \ + ((word*)x)[0] = 0; \ + ((word*)x)[1] = 0; +# endif /* CLEAR_DOUBLE */ + +/* Internally to the collector we test only the XXX_THREADS macros */ +/* not the GC_XXX_THREADS versions. Here we make sure the latter */ +/* are treated as equivalent. */ +#if defined(GC_SOLARIS_THREADS) && !defined(_SOLARIS_THREADS) +# define _SOLARIS_THREADS +#endif +#if defined(GC_SOLARIS_THREADS) && !defined(_SOLARIS_PTHREADS) +# define _SOLARIS_PTHREADS +#endif +#if defined(GC_IRIX_THREADS) && !defined(IRIX_THREADS) +# define IRIX_THREADS +#endif +#if defined(GC_LINUX_THREADS) && !defined(LINUX_THREADS) +# define LINUX_THREADS +#endif +#if defined(GC_WIN32_THREADS) && !defined(WIN32_THREADS) +# define WIN32_THREADS +#endif +#if defined(GC_HPUX_THREADS) && !defined(HPUX_THREADS) +# define HPUX_THREADS +#endif +#if defined(GC_OSF1_THREADS) && !defined(OSF1_THREADS) +# define OSF1_THREADS +#endif + +/* Internally we use SOLARIS_THREADS to test for either old or pthreads. */ # 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(WIN32_THREADS) && !defined(MSWIN32) + /* Ideally CYGWIN32 should work, in addition to MSWIN32. I suspect the necessary code */ + /* is mostly there, but nobody has actually made sure the right combination of pieces is */ + /* compiled in, etc. */ +--> 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) || defined(OSF1_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. */ +# if defined(HP_PA) || defined(M88K) || defined(POWERPC) && !defined(MACOSX) \ + || defined(LINT) || defined(MSWINCE) \ + || (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) && !defined(LINUX) +# if defined(I386) && 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. */ +# ifdef SAVE_CALL_COUNT +# define SAVE_CALL_CHAIN +# endif +# endif +# if defined(SPARC) # define SAVE_CALL_CHAIN # define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */ /* include assembly code to do it well. */ # endif -# endif +# endif /* GCCONFIG_H */ |