gcconfig.h (DATAEND): Update comment example to match reality.
* include/private/gcconfig.h (DATAEND): Update comment example to match reality. Clarify comment. Change all likely references to linker script synthesized symbols to use this idiom: extern int etext[]; etext * os_dep.c (GC_init_linux_data_start): Fix references to __data_start and _end. Co-Authored-By: Richard Henderson <rth@redhat.com> From-SVN: r52103
This commit is contained in:
Loren J. Rittle
Loren J. Rittle
parent
87e4376701
commit
4831961528
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@ -1,3 +1,13 @@
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2002-04-09 Loren J. Rittle <ljrittle@acm.org>
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Richard Henderson <rth@redhat.com>
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* include/private/gcconfig.h (DATAEND): Update comment example
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to match reality. Clarify comment.
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Change all likely references to linker script synthesized
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symbols to use this idiom: extern int etext[]; etext
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* os_dep.c (GC_init_linux_data_start): Fix references to
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__data_start and _end.
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2002-04-08 Hans Boehm <Hans_Boehm@hp.com>
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* include/private/gc_priv.h (WARN macro): Add "GC warning:" prefix.
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@ -450,7 +450,12 @@
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* On UNIX systems, the collector will scan the area between DATASTART
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* and DATAEND for root pointers.
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*
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* DATAEND, if not &end.
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* DATAEND, if not `end' where `end' is defined as ``extern int end[];''.
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* RTH suggests gaining access to linker script synth'd values with
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* this idiom instead of `&end' where `end' is defined as ``extern int end;'' .
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* Otherwise, ``GCC will assume these are in .sdata/.sbss'' and it will, e.g.,
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* cause failures on alpha*-*-* with ``-msmall-data or -fpic'' or mips-*-*
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* without any special options.
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*
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* ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice
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* the pointer size.
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@ -546,14 +551,14 @@
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# ifdef OPENBSD
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# define OS_TYPE "OPENBSD"
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# define HEURISTIC2
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extern char etext;
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# define DATASTART ((ptr_t)(&etext))
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extern char etext[];
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# define DATASTART ((ptr_t)(etext))
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# endif
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# ifdef NETBSD
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# define OS_TYPE "NETBSD"
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# define HEURISTIC2
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extern char etext;
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# define DATASTART ((ptr_t)(&etext))
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extern char etext[];
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# define DATASTART ((ptr_t)(etext))
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# endif
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# ifdef LINUX
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# define OS_TYPE "LINUX"
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@ -576,24 +581,24 @@
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/* contain large read-only data tables */
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/* that we'd rather not scan. */
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# endif /* !GLIBC2 */
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extern int _end;
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# define DATAEND (&_end)
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extern int _end[];
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# define DATAEND (_end)
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# else
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extern int etext;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
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extern int etext[];
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# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
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# endif
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# endif
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# ifdef SUNOS4
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# define OS_TYPE "SUNOS4"
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extern char etext;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ffff) & ~0x1ffff))
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extern char etext[];
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# define DATASTART ((ptr_t)((((word) (etext)) + 0x1ffff) & ~0x1ffff))
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# define HEURISTIC1 /* differs */
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# define DYNAMIC_LOADING
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# endif
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# ifdef HP
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# define OS_TYPE "HP"
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extern char etext;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
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extern char etext[];
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# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
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# define STACKBOTTOM ((ptr_t) 0xffeffffc)
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/* empirically determined. seems to work. */
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# include <unistd.h>
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@ -601,13 +606,13 @@
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# endif
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# ifdef SYSV
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# define OS_TYPE "SYSV"
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extern etext;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \
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extern etext[];
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# define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \
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& ~0x3fffff) \
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+((word)&etext & 0x1fff))
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+((word)etext & 0x1fff))
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/* This only works for shared-text binaries with magic number 0413.
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The other sorts of SysV binaries put the data at the end of the text,
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in which case the default of &etext would work. Unfortunately,
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in which case the default of etext would work. Unfortunately,
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handling both would require having the magic-number available.
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-- Parag
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*/
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@ -667,8 +672,8 @@
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# define STACK_GRAN 0x10000000
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/* Stack usually starts at 0x80000000 */
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# define LINUX_DATA_START
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extern int _end;
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# define DATAEND (&_end)
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extern int _end[];
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# define DATAEND (_end)
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# endif
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# ifdef MACOSX
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/* There are reasons to suspect this may not be reliable. */
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@ -685,16 +690,16 @@
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# define ALIGNMENT 4
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# define OS_TYPE "NETBSD"
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# define HEURISTIC2
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extern char etext;
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extern char etext[];
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# define DATASTART GC_data_start
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# define DYNAMIC_LOADING
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# endif
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# ifdef NOSYS
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# define ALIGNMENT 4
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# define OS_TYPE "NOSYS"
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extern void __end, __dso_handle;
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# define DATASTART (&__dso_handle) /* OK, that's ugly. */
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# define DATAEND (&__end)
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extern void __end[], __dso_handle[];
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# define DATASTART (__dso_handle) /* OK, that's ugly. */
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# define DATAEND (__end)
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/* Stack starts at 0xE0000000 for the simulator. */
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# undef STACK_GRAN
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# define STACK_GRAN 0x10000000
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@ -705,8 +710,8 @@
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# ifdef VAX
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# define MACH_TYPE "VAX"
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# define ALIGNMENT 4 /* Pointers are longword aligned by 4.2 C compiler */
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extern char etext;
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# define DATASTART ((ptr_t)(&etext))
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extern char etext[];
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# define DATASTART ((ptr_t)(etext))
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# ifdef BSD
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# define OS_TYPE "BSD"
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# define HEURISTIC1
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@ -738,11 +743,11 @@
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# define ALIGN_DOUBLE
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# ifdef SUNOS5
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# define OS_TYPE "SUNOS5"
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extern int _etext;
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extern int _end;
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extern int _etext[];
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extern int _end[];
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extern char * GC_SysVGetDataStart();
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# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext)
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# define DATAEND (&_end)
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# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, _etext)
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# define DATAEND (_end)
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# if !defined(USE_MMAP) && defined(REDIRECT_MALLOC)
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# define USE_MMAP
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/* Otherwise we now use calloc. Mmap may result in the */
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@ -780,9 +785,9 @@
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# define OS_TYPE "SUNOS4"
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/* [If you have a weak stomach, don't read this.] */
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/* We would like to use: */
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/* # define DATASTART ((ptr_t)((((word) (&etext)) + 0x1fff) & ~0x1fff)) */
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/* # define DATASTART ((ptr_t)((((word) (etext)) + 0x1fff) & ~0x1fff)) */
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/* This fails occasionally, due to an ancient, but very */
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/* persistent ld bug. &etext is set 32 bytes too high. */
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/* persistent ld bug. etext is set 32 bytes too high. */
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/* We instead read the text segment size from the a.out */
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/* header, which happens to be mapped into our address space */
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/* at the start of the text segment. The detective work here */
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@ -798,8 +803,8 @@
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# ifdef DRSNX
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# define OS_TYPE "DRSNX"
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extern char * GC_SysVGetDataStart();
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extern int etext;
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# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext)
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extern int etext[];
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# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, etext)
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# define MPROTECT_VDB
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# define STACKBOTTOM ((ptr_t) 0xdfff0000)
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# define DYNAMIC_LOADING
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@ -811,23 +816,23 @@
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# else
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Linux Sparc/a.out not supported
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# endif
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extern int _end;
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extern int _etext;
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# define DATAEND (&_end)
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extern int _end[];
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extern int _etext[];
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# define DATAEND (_end)
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# define SVR4
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# ifdef __arch64__
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# define STACKBOTTOM ((ptr_t) 0x80000000000ULL)
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# define DATASTART (ptr_t)GC_SysVGetDataStart(0x100000, &_etext)
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# define DATASTART (ptr_t)GC_SysVGetDataStart(0x100000, _etext)
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# else
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# define STACKBOTTOM ((ptr_t) 0xf0000000)
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# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &_etext)
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# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, _etext)
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# endif
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# endif
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# ifdef OPENBSD
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# define OS_TYPE "OPENBSD"
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# define STACKBOTTOM ((ptr_t) 0xf8000000)
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extern int etext;
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# define DATASTART ((ptr_t)(&etext))
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extern int etext[];
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# define DATASTART ((ptr_t)(etext))
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# endif
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# ifdef NETBSD
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# define OS_TYPE "NETBSD"
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@ -836,8 +841,8 @@
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# define DATASTART GC_data_start
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# define DYNAMIC_LOADING
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# else
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extern char etext;
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# define DATASTART ((ptr_t)(&etext))
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extern char etext[];
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# define DATASTART ((ptr_t)(etext))
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# endif
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# endif
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# endif
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@ -857,24 +862,24 @@
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# endif
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# ifdef SEQUENT
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# define OS_TYPE "SEQUENT"
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extern int etext;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
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extern int etext[];
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# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
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# define STACKBOTTOM ((ptr_t) 0x3ffff000)
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# endif
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# ifdef BEOS
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# define OS_TYPE "BEOS"
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# include <OS.h>
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# define GETPAGESIZE() B_PAGE_SIZE
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extern int etext;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
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extern int etext[];
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# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
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# endif
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# ifdef SUNOS5
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# define OS_TYPE "SUNOS5"
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extern int _etext, _end;
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extern int _etext[], _end[];
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extern char * GC_SysVGetDataStart();
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# define DATASTART GC_SysVGetDataStart(0x1000, &_etext)
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# define DATAEND (&_end)
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/* # define STACKBOTTOM ((ptr_t)(&_start)) worked through 2.7, */
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# define DATASTART GC_SysVGetDataStart(0x1000, _etext)
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# define DATAEND (_end)
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/* # define STACKBOTTOM ((ptr_t)(_start)) worked through 2.7, */
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/* but reportedly breaks under 2.8. It appears that the stack */
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/* base is a property of the executable, so this should not break */
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/* old executables. */
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@ -902,16 +907,16 @@
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# endif
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# ifdef SCO
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# define OS_TYPE "SCO"
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extern int etext;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0x3fffff) \
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extern int etext[];
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# define DATASTART ((ptr_t)((((word) (etext)) + 0x3fffff) \
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& ~0x3fffff) \
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+((word)&etext & 0xfff))
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+((word)etext & 0xfff))
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# define STACKBOTTOM ((ptr_t) 0x7ffffffc)
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# endif
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# ifdef SCO_ELF
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# define OS_TYPE "SCO_ELF"
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extern int etext;
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# define DATASTART ((ptr_t)(&etext))
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extern int etext[];
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# define DATASTART ((ptr_t)(etext))
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# define STACKBOTTOM ((ptr_t) 0x08048000)
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# define DYNAMIC_LOADING
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# define ELF_CLASS ELFCLASS32
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@ -942,8 +947,8 @@
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# ifdef __ELF__
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# define DYNAMIC_LOADING
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# ifdef UNDEFINED /* includes ro data */
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extern int _etext;
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# define DATASTART ((ptr_t)((((word) (&_etext)) + 0xfff) & ~0xfff))
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extern int _etext[];
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# define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff))
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# endif
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# include <features.h>
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# if defined(__GLIBC__) && __GLIBC__ >= 2
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@ -960,11 +965,11 @@
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/* contain large read-only data tables */
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/* that we'd rather not scan. */
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# endif
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extern int _end;
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# define DATAEND (&_end)
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extern int _end[];
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# define DATAEND (_end)
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# else
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extern int etext;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
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extern int etext[];
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# define DATASTART ((ptr_t)((((word) (etext)) + 0xfff) & ~0xfff))
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# endif
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# ifdef USE_I686_PREFETCH
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# define PREFETCH(x) \
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@ -989,10 +994,10 @@
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# endif
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# ifdef CYGWIN32
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# define OS_TYPE "CYGWIN32"
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extern int _data_start__;
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extern int _data_end__;
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extern int _bss_start__;
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extern int _bss_end__;
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extern int _data_start__[];
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extern int _data_end__[];
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extern int _bss_start__[];
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extern int _bss_end__[];
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/* For binutils 2.9.1, we have */
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/* DATASTART = _data_start__ */
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/* DATAEND = _bss_end__ */
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@ -1003,8 +1008,8 @@
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/* minumum/maximum of the two. */
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# define MAX(x,y) ((x) > (y) ? (x) : (y))
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# define MIN(x,y) ((x) < (y) ? (x) : (y))
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# define DATASTART ((ptr_t) MIN(&_data_start__, &_bss_start__))
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# define DATAEND ((ptr_t) MAX(&_data_end__, &_bss_end__))
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# define DATASTART ((ptr_t) MIN(_data_start__, _bss_start__))
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# define DATAEND ((ptr_t) MAX(_data_end__, _bss_end__))
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# undef STACK_GRAN
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# define STACK_GRAN 0x10000
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# define HEURISTIC1
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@ -1033,10 +1038,10 @@
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# ifdef DJGPP
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# define OS_TYPE "DJGPP"
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# include "stubinfo.h"
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extern int etext;
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extern int etext[];
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extern int _stklen;
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extern int __djgpp_stack_limit;
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# define DATASTART ((ptr_t)((((word) (&etext)) + 0x1ff) & ~0x1ff))
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# define DATASTART ((ptr_t)((((word) (etext)) + 0x1ff) & ~0x1ff))
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/* # define STACKBOTTOM ((ptr_t)((word) _stubinfo + _stubinfo->size \
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+ _stklen)) */
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# define STACKBOTTOM ((ptr_t)((word) __djgpp_stack_limit + _stklen))
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@ -1057,15 +1062,15 @@
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# define DYNAMIC_LOADING
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# endif
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/* Handle unmapped hole i386*-*-freebsd[45]* may put between etext and edata. */
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extern char etext;
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extern char edata;
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extern char end;
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extern char etext[];
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extern char edata[];
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extern char end[];
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# define NEED_FIND_LIMIT
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# define DATASTART ((ptr_t)(&etext))
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# define DATASTART ((ptr_t)(etext))
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# define MIN(x,y) ((x) < (y) ? (x) : (y))
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# define DATAEND (MIN (GC_find_limit (DATASTART, TRUE), DATASTART2))
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# define DATASTART2 ((ptr_t)(&edata))
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# define DATAEND2 ((ptr_t)(&end))
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# define DATASTART2 ((ptr_t)(edata))
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# define DATAEND2 ((ptr_t)(end))
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# endif
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# ifdef NETBSD
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# define OS_TYPE "NETBSD"
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|
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@ -1082,8 +1087,8 @@
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# if defined(OPENBSD) || defined(NETBSD) \
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|| defined(THREE86BSD) || defined(BSDI)
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# define HEURISTIC2
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extern char etext;
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# define DATASTART ((ptr_t)(&etext))
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extern char etext[];
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# define DATASTART ((ptr_t)(etext))
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# endif
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# ifdef NEXT
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# define OS_TYPE "NEXT"
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|
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@ -1110,10 +1115,10 @@
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# define OS_TYPE "HURD"
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# define STACK_GROWS_DOWN
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# define HEURISTIC2
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extern int __data_start;
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# define DATASTART ( (ptr_t) (&__data_start))
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extern int _end;
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# define DATAEND ( (ptr_t) (&_end))
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extern int __data_start[];
|
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# define DATASTART ( (ptr_t) (__data_start))
|
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extern int _end[];
|
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# define DATAEND ( (ptr_t) (_end))
|
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/* # define MPROTECT_VDB Not quite working yet? */
|
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# define DYNAMIC_LOADING
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# endif
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||||
|
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@ -1137,8 +1142,8 @@
|
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/* This was developed for a linuxce style platform. Probably */
|
||||
/* needs to be tweaked for workstation class machines. */
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# define OS_TYPE "LINUX"
|
||||
extern int __data_start;
|
||||
# define DATASTART ((ptr_t)(&__data_start))
|
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extern int __data_start[];
|
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# define DATASTART ((ptr_t)(__data_start))
|
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# define ALIGNMENT 4
|
||||
# define USE_GENERIC_PUSH_REGS
|
||||
# define STACKBOTTOM ((ptr_t)0x7fff8000)
|
||||
|
|
@ -1156,15 +1161,15 @@
|
|||
# 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"
|
||||
|
|
@ -1186,8 +1191,8 @@
|
|||
# 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
|
||||
|
|
@ -1225,7 +1230,7 @@
|
|||
# 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
|
||||
|
|
@ -1245,9 +1250,9 @@
|
|||
# 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
|
||||
|
|
@ -1281,8 +1286,8 @@
|
|||
# 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 */
|
||||
|
|
@ -1314,8 +1319,8 @@
|
|||
# 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 */
|
||||
|
||||
|
|
@ -1355,21 +1360,21 @@
|
|||
# define DYNAMIC_LOADING
|
||||
# endif
|
||||
/* Handle unmapped hole alpha*-*-freebsd[45]* puts between etext and edata. */
|
||||
extern char etext;
|
||||
extern char edata;
|
||||
extern char end;
|
||||
extern char etext[];
|
||||
extern char edata[];
|
||||
extern char end[];
|
||||
# define NEED_FIND_LIMIT
|
||||
# define DATASTART ((ptr_t)(&etext))
|
||||
# define DATASTART ((ptr_t)(etext))
|
||||
# define DATAEND (GC_find_limit (DATASTART, TRUE))
|
||||
# define DATASTART2 ((ptr_t)(&edata))
|
||||
# define DATAEND2 ((ptr_t)(&end))
|
||||
# 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 */
|
||||
|
|
@ -1380,8 +1385,8 @@
|
|||
/* 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
|
||||
|
|
@ -1397,8 +1402,8 @@
|
|||
# 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. */
|
||||
|
|
@ -1431,8 +1436,8 @@
|
|||
# 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. */
|
||||
|
|
@ -1480,8 +1485,8 @@
|
|||
# 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)))
|
||||
|
|
@ -1497,15 +1502,15 @@
|
|||
# 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
|
||||
|
|
@ -1516,27 +1521,27 @@
|
|||
# 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
|
||||
|
||||
|
|
@ -1547,8 +1552,8 @@
|
|||
# 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
|
||||
|
|
@ -1574,11 +1579,11 @@
|
|||
/* 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
|
||||
|
|
@ -1587,8 +1592,8 @@
|
|||
# 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__;
|
||||
|
|
@ -1609,8 +1614,8 @@
|
|||
# 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
|
||||
|
||||
|
|
@ -1628,10 +1633,10 @@
|
|||
/* 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)
|
||||
|
|
@ -1655,8 +1660,8 @@
|
|||
# endif
|
||||
|
||||
# ifndef DATAEND
|
||||
extern int end;
|
||||
# define DATAEND (&end)
|
||||
extern int end[];
|
||||
# define DATAEND (end)
|
||||
# endif
|
||||
|
||||
# if defined(SVR4) && !defined(GETPAGESIZE)
|
||||
|
|
|
|||
|
|
@ -155,11 +155,11 @@
|
|||
|
||||
# ifdef LINUX
|
||||
# pragma weak __data_start
|
||||
extern int __data_start;
|
||||
extern int __data_start[];
|
||||
# pragma weak data_start
|
||||
extern int data_start;
|
||||
extern int data_start[];
|
||||
# endif /* LINUX */
|
||||
extern int _end;
|
||||
extern int _end[];
|
||||
|
||||
ptr_t GC_data_start;
|
||||
|
||||
|
|
@ -169,16 +169,16 @@
|
|||
|
||||
# ifdef LINUX
|
||||
/* Try the easy approaches first: */
|
||||
if (&__data_start != 0) {
|
||||
GC_data_start = (ptr_t)(&__data_start);
|
||||
if (__data_start != 0) {
|
||||
GC_data_start = (ptr_t)__data_start;
|
||||
return;
|
||||
}
|
||||
if (&data_start != 0) {
|
||||
GC_data_start = (ptr_t)(&data_start);
|
||||
if (data_start != 0) {
|
||||
GC_data_start = (ptr_t)data_start;
|
||||
return;
|
||||
}
|
||||
# endif /* LINUX */
|
||||
GC_data_start = GC_find_limit((ptr_t)(&_end), FALSE);
|
||||
GC_data_start = GC_find_limit((ptr_t)_end, FALSE);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue