diff options
Diffstat (limited to 'boehm-gc/include/private/gcconfig.h')
| -rw-r--r-- | boehm-gc/include/private/gcconfig.h | 325 |
1 files changed, 182 insertions, 143 deletions
diff --git a/boehm-gc/include/private/gcconfig.h b/boehm-gc/include/private/gcconfig.h index e06cc4abc56..492592b2615 100644 --- a/boehm-gc/include/private/gcconfig.h +++ b/boehm-gc/include/private/gcconfig.h @@ -38,6 +38,11 @@ # define OPENBSD # endif +/* And one for FreeBSD: */ +# if defined(__FreeBSD__) +# define FREEBSD +# endif + /* Determine the machine type: */ # if defined(__XSCALE__) # define ARM32 @@ -214,7 +219,7 @@ # endif # if defined(__alpha) || defined(__alpha__) # define ALPHA -# if !defined(LINUX) && !defined(NETBSD) && !defined(OPENBSD) +# if !defined(LINUX) && !defined(NETBSD) && !defined(OPENBSD) && !defined(FREEBSD) # define OSF1 /* a.k.a Digital Unix */ # endif # define mach_type_known @@ -262,9 +267,8 @@ # define OPENBSD # define mach_type_known # endif -# if defined(__FreeBSD__) && (defined(i386) || defined(__i386__)) +# if defined(FREEBSD) && (defined(i386) || defined(__i386__)) # define I386 -# define FREEBSD # define mach_type_known # endif # if defined(__NetBSD__) && (defined(i386) || defined(__i386__)) @@ -446,7 +450,12 @@ * On UNIX systems, the collector will scan the area between DATASTART * and DATAEND for root pointers. * - * DATAEND, if not &end. + * DATAEND, if not `end' where `end' is defined as ``extern int end[];''. + * RTH suggests gaining access to linker script synth'd values with + * this idiom instead of `&end' where `end' is defined as ``extern int end;'' . + * Otherwise, ``GCC will assume these are in .sdata/.sbss'' and it will, e.g., + * cause failures on alpha*-*-* with ``-msmall-data or -fpic'' or mips-*-* + * without any special options. * * ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice * the pointer size. @@ -542,14 +551,14 @@ # ifdef OPENBSD # define OS_TYPE "OPENBSD" # define HEURISTIC2 - extern char etext; -# define DATASTART ((ptr_t)(&etext)) + 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)) + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) # endif # ifdef LINUX # define OS_TYPE "LINUX" @@ -572,24 +581,24 @@ /* contain large read-only data tables */ /* that we'd rather not scan. */ # endif /* !GLIBC2 */ - extern int _end; -# define DATAEND (&_end) + extern int _end[]; +# define DATAEND (_end) # else - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) + 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)) + 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)) + extern char etext[]; +# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) # define STACKBOTTOM ((ptr_t) 0xffeffffc) /* empirically determined. seems to work. */ # include <unistd.h> @@ -597,13 +606,13 @@ # endif # ifdef SYSV # define OS_TYPE "SYSV" - extern etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \ + extern etext[]; +# define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \ & ~0x3fffff) \ - +((word)&etext & 0x1fff)) + +((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, + in which case the default of etext would work. Unfortunately, handling both would require having the magic-number available. -- Parag */ @@ -663,8 +672,8 @@ # define STACK_GRAN 0x10000000 /* Stack usually starts at 0x80000000 */ # define LINUX_DATA_START - extern int _end; -# define DATAEND (&_end) + extern int _end[]; +# define DATAEND (_end) # endif # ifdef MACOSX /* There are reasons to suspect this may not be reliable. */ @@ -681,16 +690,16 @@ # define ALIGNMENT 4 # define OS_TYPE "NETBSD" # define HEURISTIC2 - extern char etext; + 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) + 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 @@ -701,8 +710,8 @@ # 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)) + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) # ifdef BSD # define OS_TYPE "BSD" # define HEURISTIC1 @@ -734,11 +743,11 @@ # define ALIGN_DOUBLE # ifdef SUNOS5 # define OS_TYPE "SUNOS5" - extern int _etext; - extern int _end; + extern int _etext[]; + extern int _end[]; extern char * GC_SysVGetDataStart(); -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext) -# define DATAEND (&_end) +# define DATASTART (ptr_t)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 */ @@ -768,17 +777,15 @@ # define GETPAGESIZE() sysconf(_SC_PAGESIZE) /* getpagesize() appeared to be missing from at least one */ /* Solaris 5.4 installation. Weird. */ -# if CPP_WORDSZ == 32 -# define DYNAMIC_LOADING -# endif +# 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)) */ +/* # 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. */ + /* 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 */ @@ -794,8 +801,8 @@ # ifdef DRSNX # define OS_TYPE "DRSNX" extern char * GC_SysVGetDataStart(); - extern int etext; -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext) + extern int etext[]; +# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, etext) # define MPROTECT_VDB # define STACKBOTTOM ((ptr_t) 0xdfff0000) # define DYNAMIC_LOADING @@ -807,23 +814,24 @@ # else Linux Sparc/a.out not supported # endif - extern int _end; - extern int _etext; -# define DATAEND (&_end) + extern int _end[]; + extern int _etext[]; +# define DATAEND (_end) # define SVR4 # ifdef __arch64__ -# define STACKBOTTOM ((ptr_t) 0x80000000000ULL) -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x100000, &_etext) +# define DATASTART (ptr_t)GC_SysVGetDataStart(0x100000, _etext) + /* libc_stack_end is not set reliably for sparc64 */ +# define STACKBOTTOM ((ptr_t) 0x80000000000) # else -# define STACKBOTTOM ((ptr_t) 0xf0000000) -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext) +# define DATASTART (ptr_t)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)) + extern int etext[]; +# define DATASTART ((ptr_t)(etext)) # endif # ifdef NETBSD # define OS_TYPE "NETBSD" @@ -832,8 +840,8 @@ # define DATASTART GC_data_start # define DYNAMIC_LOADING # else - extern char etext; -# define DATASTART ((ptr_t)(&etext)) + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) # endif # endif # endif @@ -853,24 +861,24 @@ # endif # ifdef SEQUENT # define OS_TYPE "SEQUENT" - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) + 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)) + extern int etext[]; +# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) # endif # ifdef SUNOS5 # define OS_TYPE "SUNOS5" - extern int _etext, _end; + extern int _etext[], _end[]; extern char * GC_SysVGetDataStart(); -# define DATASTART GC_SysVGetDataStart(0x1000, &_etext) -# define DATAEND (&_end) -/* # define STACKBOTTOM ((ptr_t)(&_start)) worked through 2.7, */ +# 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. */ @@ -898,16 +906,16 @@ # endif # ifdef SCO # define OS_TYPE "SCO" - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \ + extern int etext[]; +# define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \ & ~0x3fffff) \ - +((word)&etext & 0xfff)) + +((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)) + extern int etext[]; +# define DATASTART ((ptr_t)(etext)) # define STACKBOTTOM ((ptr_t) 0x08048000) # define DYNAMIC_LOADING # define ELF_CLASS ELFCLASS32 @@ -938,8 +946,8 @@ # ifdef __ELF__ # define DYNAMIC_LOADING # ifdef UNDEFINED /* includes ro data */ - extern int _etext; -# define DATASTART ((ptr_t)((((word) (&_etext)) + 0xfff) & ~0xfff)) + extern int _etext[]; +# define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff)) # endif # include <features.h> # if defined(__GLIBC__) && __GLIBC__ >= 2 @@ -956,11 +964,11 @@ /* contain large read-only data tables */ /* that we'd rather not scan. */ # endif - extern int _end; -# define DATAEND (&_end) + extern int _end[]; +# define DATAEND (_end) # else - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) + extern int etext[]; +# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) # endif # ifdef USE_I686_PREFETCH # define PREFETCH(x) \ @@ -985,10 +993,10 @@ # endif # ifdef CYGWIN32 # define OS_TYPE "CYGWIN32" - extern int _data_start__; - extern int _data_end__; - extern int _bss_start__; - extern int _bss_end__; + 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__ */ @@ -999,8 +1007,8 @@ /* 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__)) +# 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 @@ -1029,10 +1037,10 @@ # ifdef DJGPP # define OS_TYPE "DJGPP" # include "stubinfo.h" - extern int etext; + extern int etext[]; extern int _stklen; extern int __djgpp_stack_limit; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ff) & ~0x1ff)) +# 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)) @@ -1052,11 +1060,22 @@ # ifdef __ELF__ # define DYNAMIC_LOADING # endif - extern char etext; -# define DATASTART ((ptr_t)(&etext)) +/* Handle unmapped hole i386*-*-freebsd[45]* may put between etext and edata. */ + extern char etext[]; + extern char edata[]; + extern char end[]; +# define NEED_FIND_LIMIT +# define DATASTART ((ptr_t)(etext)) +# define MIN(x,y) ((x) < (y) ? (x) : (y)) +# define DATAEND (MIN (GC_find_limit (DATASTART, TRUE), DATASTART2)) +# define DATASTART2 ((ptr_t)(edata)) +# define DATAEND2 ((ptr_t)(end)) # endif # ifdef NETBSD # define OS_TYPE "NETBSD" +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif # endif # ifdef THREE86BSD # define OS_TYPE "THREE86BSD" @@ -1067,8 +1086,8 @@ # if defined(OPENBSD) || defined(NETBSD) \ || defined(THREE86BSD) || defined(BSDI) # define HEURISTIC2 - extern char etext; -# define DATASTART ((ptr_t)(&etext)) + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) # endif # ifdef NEXT # define OS_TYPE "NEXT" @@ -1095,10 +1114,10 @@ # 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)) + 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 @@ -1122,8 +1141,8 @@ /* 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)) + extern int __data_start[]; +# define DATASTART ((ptr_t)(__data_start)) # define ALIGNMENT 4 # define USE_GENERIC_PUSH_REGS # define STACKBOTTOM ((ptr_t)0x7fff8000) @@ -1141,15 +1160,15 @@ # 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) + 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" @@ -1171,8 +1190,8 @@ # endif # ifdef IRIX5 # define HEURISTIC2 - extern int _fdata; -# define DATASTART ((ptr_t)(&_fdata)) + extern int _fdata[]; +# define DATASTART ((ptr_t)(_fdata)) # ifdef USE_MMAP # define HEAP_START (ptr_t)0x30000000 # else @@ -1210,7 +1229,7 @@ # define HEURISTIC2 # define USE_GENERIC_PUSH_REGS # ifdef __ELF__ - extern int etext; + extern int etext[]; # define DATASTART GC_data_start # define NEED_FIND_LIMIT # define DYNAMIC_LOADING @@ -1230,9 +1249,9 @@ # define ALIGNMENT 4 # define CPP_WORDSZ 32 # endif - extern int _data, _end; -# define DATASTART ((ptr_t)((ulong)&_data)) -# define DATAEND ((ptr_t)((ulong)&_end)) + extern int _data[], _end[]; +# define DATASTART ((ptr_t)((ulong)_data)) +# define DATAEND ((ptr_t)((ulong)_end)) extern int errno; # define STACKBOTTOM ((ptr_t)((ulong)&errno)) # define USE_GENERIC_PUSH_REGS @@ -1266,8 +1285,8 @@ # define STACK_GROWS_UP # ifdef HPUX # define OS_TYPE "HPUX" - extern int __data_start; -# define DATASTART ((ptr_t)(&__data_start)) + 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 */ @@ -1299,8 +1318,8 @@ # define LINUX_STACKBOTTOM # define DYNAMIC_LOADING # define LINUX_DATA_START - extern int _end; -# define DATAEND (&_end) + extern int _end[]; +# define DATAEND (_end) # endif /* LINUX */ # endif /* HP_PA */ @@ -1330,11 +1349,31 @@ # 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)) +# define CPP_WORDSZ 64 +# endif # ifdef OSF1 # define OS_TYPE "OSF1" # define DATASTART ((ptr_t) 0x140000000) - extern int _end; -# define DATAEND ((ptr_t) &_end) + 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 */ @@ -1345,8 +1384,8 @@ /* 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))) + extern int __start[]; +# define HEURISTIC2_LIMIT ((ptr_t)((word)(__start) & ~(getpagesize()-1))) # define CPP_WORDSZ 64 # define MPROTECT_VDB # define DYNAMIC_LOADING @@ -1362,8 +1401,8 @@ # else # define DATASTART ((ptr_t) 0x140000000) # endif - extern int _end; -# define DATAEND (&_end) + extern int _end[]; +# define DATAEND (_end) # define MPROTECT_VDB /* Has only been superficially tested. May not */ /* work on all versions. */ @@ -1396,8 +1435,8 @@ # define ALIGNMENT 8 # endif # define OS_TYPE "HPUX" - extern int __data_start; -# define DATASTART ((ptr_t)(&__data_start)) + 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. */ @@ -1445,8 +1484,8 @@ # endif # define MPROTECT_VDB /* Requires Linux 2.3.47 or later. */ - extern int _end; -# define DATAEND (&_end) + extern int _end[]; +# define DATAEND (_end) # ifdef __GNUC__ # define PREFETCH(x) \ __asm__ (" lfetch [%0]": : "r"((void *)(x))) @@ -1462,15 +1501,15 @@ # define MACH_TYPE "M88K" # define ALIGNMENT 4 # define ALIGN_DOUBLE - extern int etext; + extern int etext[]; # ifdef CX_UX # define OS_TYPE "CX_UX" -# define DATASTART ((((word)&etext + 0x3fffff) & ~0x3fffff) + 0x10000) +# 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) +# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, etext) # endif # define STACKBOTTOM ((char*)0xf0000000) /* determined empirically */ # endif @@ -1481,27 +1520,27 @@ # define USE_GENERIC_PUSH_REGS # ifdef UTS4 # define OS_TYPE "UTS4" - extern int etext; - extern int _etext; - extern int _end; + 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 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)) + 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)) + extern int _etext[]; +# define DATASTART ((ptr_t)(_etext)) # define HEURISTIC1 # endif @@ -1512,8 +1551,8 @@ # ifdef NETBSD # define OS_TYPE "NETBSD" # define HEURISTIC2 - extern char etext; -# define DATASTART ((ptr_t)(&etext)) + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) # define USE_GENERIC_PUSH_REGS # endif # ifdef LINUX @@ -1539,11 +1578,11 @@ /* contain large read-only data tables */ /* that we'd rather not scan. */ # endif - extern int _end; -# define DATAEND (&_end) + extern int _end[]; +# define DATAEND (_end) # else - extern int etext; -# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff)) + extern int etext[]; +# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff)) # endif # endif # ifdef MSWINCE @@ -1552,8 +1591,8 @@ # endif # ifdef NOSYS /* __data_start is usually defined in the target linker script. */ - extern int __data_start; -# define DATASTART (ptr_t)(&__data_start) + 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__; @@ -1574,8 +1613,8 @@ # define USE_GENERIC_PUSH_REGS # define DYNAMIC_LOADING # define LINUX_DATA_START - extern int _end; -# define DATAEND (&_end) + extern int _end[]; +# define DATAEND (_end) # endif # endif @@ -1593,10 +1632,10 @@ /* case we lose. Nonetheless, we try both, prefering __data_start. */ /* We assume gcc. */ # pragma weak __data_start - extern int __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)) + extern int data_start[]; +# define DATASTART ((ptr_t)(__data_start != 0? __data_start : data_start)) #endif #if defined(LINUX) && defined(REDIRECT_MALLOC) @@ -1620,8 +1659,8 @@ # endif # ifndef DATAEND - extern int end; -# define DATAEND (&end) + extern int end[]; +# define DATAEND (end) # endif # if defined(SVR4) && !defined(GETPAGESIZE) |