diff options
Diffstat (limited to 'gc/include/private/gcconfig.h')
| -rw-r--r-- | gc/include/private/gcconfig.h | 610 |
1 files changed, 422 insertions, 188 deletions
diff --git a/gc/include/private/gcconfig.h b/gc/include/private/gcconfig.h index 86020fc..b995074 100644 --- a/gc/include/private/gcconfig.h +++ b/gc/include/private/gcconfig.h @@ -38,7 +38,19 @@ # define OPENBSD # endif +/* And one for FreeBSD: */ +# if defined(__FreeBSD__) +# define FREEBSD +# endif + /* Determine the machine type: */ +# if defined(__XSCALE__) +# define ARM32 +# if !defined(LINUX) +# define NOSYS +# define mach_type_known +# endif +# endif # if defined(sun) && defined(mc68000) # define M68K # define SUNOS4 @@ -100,6 +112,13 @@ # endif # define mach_type_known # endif +# if defined(DGUX) && (defined(i386) || defined(__i386__)) +# define I386 +# ifndef _USING_DGUX +# define _USING_DGUX +# endif +# define mach_type_known +# endif # if defined(sequent) && (defined(i386) || defined(__i386__)) # define I386 # define SEQUENT @@ -185,6 +204,10 @@ # define IA64 # define mach_type_known # endif +# if defined(LINUX) && defined(__arm__) +# define ARM32 +# define mach_type_known +# endif # if defined(LINUX) && (defined(powerpc) || defined(__powerpc__)) # define POWERPC # define mach_type_known @@ -207,7 +230,7 @@ # 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 @@ -224,7 +247,7 @@ # define MACOS # define mach_type_known # endif -# if defined(__MWERKS__) && defined(__powerc) +# if defined(__MWERKS__) && defined(__powerc) && !defined(__MACH__) # define POWERPC # define MACOS # define mach_type_known @@ -255,9 +278,8 @@ # 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__)) @@ -279,7 +301,7 @@ # define CX_UX # define mach_type_known # endif -# if defined(DGUX) +# if defined(DGUX) && defined(m88k) # define M88K /* DGUX defined */ # define mach_type_known @@ -436,10 +458,17 @@ * defining it to be 1 will always work, but perform poorly. * * DATASTART is the beginning of the data segment. - * On UNIX systems, the collector will scan the area between DATASTART + * On some platforms SEARCH_FOR_DATA_START is defined. + * SEARCH_FOR_DATASTART will cause GC_data_start to + * be set to an address determined by accessing data backwards from _end + * until an unmapped page is found. DATASTART will be defined to be + * GC_data_start. + * On UNIX-like systems, the collector will scan the area between DATASTART * and DATAEND for root pointers. * - * DATAEND, if not &end. + * DATAEND, if not `end' where `end' is defined as ``extern int end[];''. + * RTH suggests gaining access to linker script synth'd values with + * this idiom instead of `&end' where `end' is defined as ``extern int end;'' . * * ALIGN_DOUBLE of GC_malloc should return blocks aligned to twice * the pointer size. @@ -451,8 +480,13 @@ * 1) define STACK_GROWS_UP if the stack grows toward higher addresses, and * 2) define exactly one of * STACKBOTTOM (should be defined to be an expression) + * LINUX_STACKBOTTOM * HEURISTIC1 * HEURISTIC2 + * If STACKBOTTOM is defined, then it's value will be used directly as the + * stack base. If LINUX_STACKBOTTOM is defined, then it will be determined + * with a method appropriate for most Linux systems. Currently we look + * first for __libc_stack_end, and if that fails read it from /proc. * If either of the last two macros are defined, then STACKBOTTOM is computed * during collector startup using one of the following two heuristics: * HEURISTIC1: Take an address inside GC_init's frame, and round it up to @@ -517,6 +551,9 @@ * An architecture may also define CLEAR_DOUBLE(x) to be a fast way to * clear the two words at GC_malloc-aligned address x. By default, * word stores of 0 are used instead. + * + * HEAP_START may be defined as the initial address hint for mmap-based + * allocation. */ /* If we are using a recent version of gcc, we can use __builtin_unwind_init() @@ -535,14 +572,14 @@ # 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" @@ -565,24 +602,24 @@ /* 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> @@ -590,13 +627,13 @@ # 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 */ @@ -656,8 +693,8 @@ # 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. */ @@ -674,16 +711,16 @@ # 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 @@ -694,8 +731,8 @@ # 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 @@ -718,17 +755,20 @@ # define MACH_TYPE "SPARC" # if defined(__arch64__) || defined(__sparcv9) # define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# define ELF_CLASS ELFCLASS64 # else # define ALIGNMENT 4 /* Required by hardware */ +# define CPP_WORDSZ 32 # endif # define ALIGN_DOUBLE # ifdef SUNOS5 # define OS_TYPE "SUNOS5" - extern int _etext; - extern int _end; + extern 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 */ @@ -764,9 +804,9 @@ # 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 */ @@ -780,11 +820,10 @@ # define DYNAMIC_LOADING # endif # ifdef DRSNX -# define CPP_WORDSZ 32 # define OS_TYPE "DRSNX" extern char * GC_SysVGetDataStart(); - extern int etext; -# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, &etext) + extern int etext[]; +# define DATASTART (ptr_t)GC_SysVGetDataStart(0x10000, etext) # define MPROTECT_VDB # define STACKBOTTOM ((ptr_t) 0xdfff0000) # define DYNAMIC_LOADING @@ -796,24 +835,24 @@ # 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 DATASTART (ptr_t)GC_SysVGetDataStart(0x100000, _etext) + /* libc_stack_end is not set reliably for sparc64 */ # 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) +# 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" @@ -822,8 +861,8 @@ # 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 @@ -843,24 +882,24 @@ # 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. */ @@ -888,21 +927,47 @@ # 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 # endif +# ifdef DGUX +# define OS_TYPE "DGUX" + extern int _etext, _end; + extern char * GC_SysVGetDataStart(); +# define DATASTART GC_SysVGetDataStart(0x1000, &_etext) +# define DATAEND (&_end) +# define STACK_GROWS_DOWN +# define HEURISTIC2 +# include <unistd.h> +# define GETPAGESIZE() sysconf(_SC_PAGESIZE) +# define DYNAMIC_LOADING +# ifndef USE_MMAP +# define USE_MMAP +# endif /* USE_MMAP */ +# define MAP_FAILED (void *) -1 +# ifdef USE_MMAP +# define HEAP_START (ptr_t)0x40000000 +# else /* USE_MMAP */ +# define HEAP_START DATAEND +# endif /* USE_MMAP */ +# endif /* DGUX */ + # ifdef LINUX +# ifndef __GNUC__ + /* The Intel compiler doesn't like inline assembly */ +# define USE_GENERIC_PUSH_REGS +# endif # define OS_TYPE "LINUX" # define LINUX_STACKBOTTOM # if 0 @@ -921,11 +986,14 @@ /* possibly because Linux threads is itself a malloc client */ /* and can't deal with the signals. */ # endif +# define HEAP_START 0x1000 + /* This encourages mmap to give us low addresses, */ + /* thus allowing the heap to grow to ~3GB */ # ifdef __ELF__ # define DYNAMIC_LOADING # ifdef UNDEFINED /* includes ro data */ - extern int _etext; -# define DATASTART ((ptr_t)((((word) (&_etext)) + 0xfff) & ~0xfff)) + extern int _etext[]; +# define DATASTART ((ptr_t)((((word) (_etext)) + 0xfff) & ~0xfff)) # endif # include <features.h> # if defined(__GLIBC__) && __GLIBC__ >= 2 @@ -942,11 +1010,11 @@ /* 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) \ @@ -971,10 +1039,10 @@ # 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__ */ @@ -985,8 +1053,8 @@ /* 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 @@ -1015,10 +1083,10 @@ # 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)) @@ -1038,11 +1106,14 @@ # ifdef __ELF__ # define DYNAMIC_LOADING # endif - extern char etext; -# define DATASTART ((ptr_t)(&etext)) + extern char etext[]; +# define DATASTART ((ptr_t)(etext)) # endif # ifdef NETBSD # define OS_TYPE "NETBSD" +# ifdef __ELF__ +# define DYNAMIC_LOADING +# endif # endif # ifdef THREE86BSD # define OS_TYPE "THREE86BSD" @@ -1053,8 +1124,8 @@ # 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" @@ -1081,10 +1152,10 @@ # 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 @@ -1108,15 +1179,14 @@ /* 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 DYNAMIC_LOADING + extern int _end[]; +# define DATAEND (_end) + extern int __data_start[]; +# define DATASTART ((ptr_t)(__data_start)) # define ALIGNMENT 4 # define USE_GENERIC_PUSH_REGS -# 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. */ +# define LINUX_STACKBOTTOM # endif /* Linux */ # ifdef EWS4800 # define HEURISTIC2 @@ -1127,15 +1197,15 @@ # 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" @@ -1157,8 +1227,8 @@ # 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 @@ -1196,7 +1266,7 @@ # 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 @@ -1209,10 +1279,20 @@ # ifdef RS6000 # define MACH_TYPE "RS6000" -# define ALIGNMENT 4 -# define DATASTART ((ptr_t)0x20000000) +# ifdef __64BIT__ +# define ALIGNMENT 8 +# define CPP_WORDSZ 64 +# define STACKBOTTOM 0x1000000000000000 +# else +# define ALIGNMENT 4 +# define CPP_WORDSZ 32 +# define STACKBOTTOM ((ptr_t)((ulong)&errno)) +# endif + extern int _data[], _end[]; +# define DATASTART ((ptr_t)((ulong)_data)) +# define DATAEND ((ptr_t)((ulong)_end)) extern int errno; -# define STACKBOTTOM ((ptr_t)((ulong)&errno)) +# define USE_GENERIC_PUSH_REGS # define DYNAMIC_LOADING /* For really old versions of AIX, this may have to be removed. */ # endif @@ -1243,8 +1323,8 @@ # 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 */ @@ -1275,8 +1355,8 @@ # define OS_TYPE "LINUX" # define LINUX_STACKBOTTOM # define DYNAMIC_LOADING -# define LINUX_DATA_START - extern int _end; +# define SEARCH_FOR_DATA_START + extern int _end[]; # define DATAEND (&_end) # endif /* LINUX */ # endif /* HP_PA */ @@ -1284,11 +1364,13 @@ # 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. */ +# ifndef LINUX +# define USE_GENERIC_PUSH_REGS + /* Gcc and probably the DEC/Compaq compiler spill pointers to preserved */ + /* fp registers in some cases when the target is a 21264. The assembly */ + /* code doesn't handle that yet, and version dependencies make that a */ + /* bit tricky. Do the easy thing for now. */ +# endif # ifdef NETBSD # define OS_TYPE "NETBSD" # define HEURISTIC2 @@ -1312,10 +1394,30 @@ # 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; + extern int _end[]; # define DATAEND ((ptr_t) &_end) extern char ** environ; /* round up from the value of environ to the nearest page boundary */ @@ -1327,8 +1429,8 @@ /* 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 @@ -1339,13 +1441,12 @@ # define STACKBOTTOM ((ptr_t) 0x120000000) # ifdef __ELF__ # define SEARCH_FOR_DATA_START -# define DATASTART GC_data_start # define DYNAMIC_LOADING # 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. */ @@ -1378,8 +1479,8 @@ # 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. */ @@ -1417,7 +1518,6 @@ extern char * GC_register_stackbottom; # define BACKING_STORE_BASE ((ptr_t)GC_register_stackbottom) # define SEARCH_FOR_DATA_START -# define DATASTART GC_data_start # ifdef __GNUC__ # define DYNAMIC_LOADING # else @@ -1427,8 +1527,8 @@ # 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))) @@ -1444,15 +1544,15 @@ # 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 @@ -1463,27 +1563,27 @@ # 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 @@ -1494,8 +1594,8 @@ # 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 @@ -1521,17 +1621,26 @@ /* 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 # define OS_TYPE "MSWINCE" # define DATAEND /* not needed */ # endif +# ifdef NOSYS + /* __data_start is usually defined in the target linker script. */ + extern int __data_start[]; +# define DATASTART (ptr_t)(__data_start) +# define USE_GENERIC_PUSH_REGS + /* __stack_base__ is set in newlib/libc/sys/arm/crt0.S */ + extern void *__stack_base__; +# define STACKBOTTOM ((ptr_t) (__stack_base__)) +# endif #endif # ifdef SH @@ -1547,8 +1656,8 @@ # 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 @@ -1566,10 +1675,10 @@ /* 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) @@ -1593,8 +1702,8 @@ # endif # ifndef DATAEND - extern int end; -# define DATAEND (&end) + extern int end[]; +# define DATAEND (end) # endif # if defined(SVR4) && !defined(GETPAGESIZE) @@ -1610,15 +1719,15 @@ # endif # if defined(SUNOS5) || defined(DRSNX) || defined(UTS4) - /* OS has SVR4 generic features. Probably others also qualify. */ + /* OS has SVR4 generic features. Probably others also qualify. */ # define SVR4 # endif # if defined(SUNOS5) || defined(DRSNX) - /* OS has SUNOS5 style semi-undocumented interface to dynamic */ - /* loader. */ + /* OS has SUNOS5 style semi-undocumented interface to dynamic */ + /* loader. */ # define SUNOS5DL - /* OS has SUNOS5 style signal handlers. */ + /* OS has SUNOS5 style signal handlers. */ # define SUNOS5SIGS # endif @@ -1627,13 +1736,13 @@ # endif # if defined(SVR4) || defined(LINUX) || defined(IRIX) || defined(HPUX) \ - || defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) \ - || defined(BSD) || defined(AIX) || defined(MACOSX) || defined(OSF1) + || defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) || defined(DGUX) \ + || defined(BSD) || defined(AIX) || defined(MACOSX) || defined(OSF1) # define UNIX_LIKE /* Basic Unix-like system calls work. */ # endif # if CPP_WORDSZ != 32 && CPP_WORDSZ != 64 - -> bad word size + -> bad word size # endif # ifdef PCR @@ -1647,13 +1756,13 @@ # endif # ifdef SRC_M3 -/* Postponed for now. */ + /* Postponed for now. */ # undef PROC_VDB # undef MPROTECT_VDB # endif # ifdef SMALL_CONFIG -/* Presumably not worth the space it takes. */ + /* Presumably not worth the space it takes. */ # undef PROC_VDB # undef MPROTECT_VDB # endif @@ -1684,65 +1793,190 @@ # define CACHE_LINE_SIZE 32 /* Wild guess */ # endif +# if defined(SEARCH_FOR_DATA_START) + extern ptr_t GC_data_start; +# define DATASTART GC_data_start +# endif + # ifndef CLEAR_DOUBLE # define CLEAR_DOUBLE(x) \ - ((word*)x)[0] = 0; \ - ((word*)x)[1] = 0; + ((word*)x)[0] = 0; \ + ((word*)x)[1] = 0; # endif /* CLEAR_DOUBLE */ -/* Internally we use GC_SOLARIS_THREADS to test for either old or pthreads. */ + /* Internally we use GC_SOLARIS_THREADS to test for either old or pthreads. */ # if defined(GC_SOLARIS_PTHREADS) && !defined(GC_SOLARIS_THREADS) # define GC_SOLARIS_THREADS # endif # if defined(GC_IRIX_THREADS) && !defined(IRIX5) ---> inconsistent configuration + --> inconsistent configuration # endif # if defined(GC_LINUX_THREADS) && !defined(LINUX) ---> inconsistent configuration + --> inconsistent configuration # endif # if defined(GC_SOLARIS_THREADS) && !defined(SUNOS5) ---> inconsistent configuration + --> inconsistent configuration # endif # if defined(GC_HPUX_THREADS) && !defined(HPUX) ---> inconsistent configuration + --> inconsistent configuration # endif # if defined(GC_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 + /* 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(GC_SOLARIS_THREADS) || defined(GC_WIN32_THREADS) || \ - defined(GC_PTHREADS) + defined(GC_SOLARIS_THREADS) || defined(GC_WIN32_THREADS) || \ + defined(GC_PTHREADS) # define THREADS # endif # if defined(HP_PA) || defined(M88K) || defined(POWERPC) && !defined(MACOSX) \ - || defined(LINT) || defined(MSWINCE) \ - || (defined(I386) && defined(__LCC__)) - /* Use setjmp based hack to mark from callee-save registers. */ - /* The define should move to the individual platform */ - /* descriptions. */ + || defined(LINT) || defined(MSWINCE) || defined(ARM32) \ + || (defined(I386) && defined(__LCC__)) + /* Use setjmp based hack to mark from callee-save registers. */ + /* The define should move to the individual platform */ + /* descriptions. */ # define USE_GENERIC_PUSH_REGS # endif -# if defined(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 + +# if defined(SPARC) +# define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */ + /* include assembly code to do it well. */ +# endif + + /* Can we save call chain in objects for debugging? */ + /* SET NFRAMES (# of saved frames) and NARGS (#of args for each frame) */ + /* to reasonable values for the platform. */ + /* Set SAVE_CALL_CHAIN if we can. SAVE_CALL_COUNT can be specified at */ + /* build time, though we feel free to adjust it slightly. */ + /* Define NEED_CALLINFO if we either save the call stack or */ + /* GC_ADD_CALLER is defined. */ +#ifdef LINUX +# include <features.h> +# if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 || __GLIBC__ > 2 +# define HAVE_BUILTIN_BACKTRACE +# endif +#endif + +#if defined(SPARC) +# define CAN_SAVE_CALL_STACKS +# define CAN_SAVE_CALL_ARGS +#endif +#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. */ +# define CAN_SAVE_CALL_STACKS +# define CAN_SAVE_CALL_ARGS +#endif +#if defined(HAVE_BUILTIN_BACKTRACE) && !defined(CAN_SAVE_CALL_STACKS) +# define CAN_SAVE_CALL_STACKS +#endif + +# if defined(SAVE_CALL_COUNT) && !defined(GC_ADD_CALLER) \ + && defined(CAN_SAVE_CALL_STACKS) # define SAVE_CALL_CHAIN # endif +# ifdef SAVE_CALL_CHAIN +# if defined(SAVE_CALL_NARGS) && defined(CAN_SAVE_CALL_ARGS) +# define NARGS SAVE_CALL_NARGS +# else +# define NARGS 0 /* Number of arguments to save for each call. */ +# endif # endif -# if defined(SPARC) -# define SAVE_CALL_CHAIN -# define ASM_CLEAR_CODE /* Stack clearing is crucial, and we */ - /* include assembly code to do it well. */ +# ifdef SAVE_CALL_CHAIN +# ifndef SAVE_CALL_COUNT +# define NFRAMES 6 /* Number of frames to save. Even for */ + /* alignment reasons. */ +# else +# define NFRAMES ((SAVE_CALL_COUNT + 1) & ~1) +# endif +# define NEED_CALLINFO +# endif /* SAVE_CALL_CHAIN */ +# ifdef GC_ADD_CALLER +# define NFRAMES 1 +# define NARGS 0 +# define NEED_CALLINFO # endif # if defined(MAKE_BACK_GRAPH) && !defined(DBG_HDRS_ALL) # define DBG_HDRS_ALL # endif +#ifdef GC_PRIVATE_H + /* This relies on some type definitions from gc_priv.h, from */ + /* where it's normally included. */ + /* */ + /* How to get heap memory from the OS: */ + /* Note that sbrk()-like allocation is preferred, since it */ + /* usually makes it possible to merge consecutively allocated */ + /* chunks. It also avoids unintented recursion with */ + /* -DREDIRECT_MALLOC. */ + /* GET_MEM() returns a HLKSIZE aligned chunk. */ + /* 0 is taken to mean failure. */ + /* In the case os USE_MMAP, the argument must also be a */ + /* physical page size. */ + /* GET_MEM is currently not assumed to retrieve 0 filled space, */ + /* though we should perhaps take advantage of the case in which */ + /* does. */ + struct hblk; /* See gc_priv.h. */ +# ifdef PCR + char * real_malloc(); +# define GET_MEM(bytes) HBLKPTR(real_malloc((size_t)bytes + GC_page_size) \ + + GC_page_size-1) +# else +# ifdef OS2 + void * os2_alloc(size_t bytes); +# define GET_MEM(bytes) HBLKPTR((ptr_t)os2_alloc((size_t)bytes \ + + GC_page_size) \ + + GC_page_size-1) +# else +# if defined(NEXT) || defined(MACOSX) || defined(DOS4GW) || \ + (defined(AMIGA) && !defined(GC_AMIGA_FASTALLOC)) || \ + (defined(SUNOS5) && !defined(USE_MMAP)) +# define GET_MEM(bytes) HBLKPTR((size_t) \ + calloc(1, (size_t)bytes + GC_page_size) \ + + GC_page_size-1) +# else +# ifdef MSWIN32 + extern ptr_t GC_win32_get_mem(); +# define GET_MEM(bytes) (struct hblk *)GC_win32_get_mem(bytes) +# else +# ifdef MACOS +# if defined(USE_TEMPORARY_MEMORY) + extern Ptr GC_MacTemporaryNewPtr(size_t size, + Boolean clearMemory); +# define GET_MEM(bytes) HBLKPTR( \ + GC_MacTemporaryNewPtr(bytes + GC_page_size, true) \ + + GC_page_size-1) +# else +# define GET_MEM(bytes) HBLKPTR( \ + NewPtrClear(bytes + GC_page_size) + GC_page_size-1) +# endif +# else +# ifdef MSWINCE + extern ptr_t GC_wince_get_mem(); +# define GET_MEM(bytes) (struct hblk *)GC_wince_get_mem(bytes) +# else +# if defined(AMIGA) && defined(GC_AMIGA_FASTALLOC) + extern void *GC_amiga_get_mem(size_t size); + define GET_MEM(bytes) HBLKPTR((size_t) \ + GC_amiga_get_mem((size_t)bytes + GC_page_size) \ + + GC_page_size-1) +# else + extern ptr_t GC_unix_get_mem(); +# define GET_MEM(bytes) (struct hblk *)GC_unix_get_mem(bytes) +# endif +# endif +# endif +# endif +# endif +# endif +# endif + +#endif /* GC_PRIVATE_H */ + # endif /* GCCONFIG_H */ |