* modified is included with the above copyright notice.
*/
-#ifndef CONFIG_H
+#ifndef GCCONFIG_H
-# define CONFIG_H
+# define GCCONFIG_H
/* Machine dependent parameters. Some tuning parameters can be found */
/* near the top of gc_private.h. */
# define NETBSD
# define mach_type_known
# endif
+# if defined(__NetBSD__) && defined(arm32)
+# define ARM32
+# define NETBSD
+# define mach_type_known
+# endif
# if defined(vax)
# define VAX
# ifdef ultrix
# endif
# if defined(mips) || defined(__mips)
# define MIPS
-# if defined(ultrix) || defined(__ultrix) || defined(__NetBSD__)
-# define ULTRIX
-# else
-# if defined(_SYSTYPE_SVR4) || defined(SYSTYPE_SVR4) || defined(__SYSTYPE_SVR4__)
-# define IRIX5 /* or IRIX 6.X */
-# else
-# define RISCOS /* or IRIX 4.X */
-# endif
-# endif
+# if !defined(LINUX)
+# if defined(ultrix) || defined(__ultrix) || defined(__NetBSD__)
+# define ULTRIX
+# else
+# if defined(_SYSTYPE_SVR4) || defined(SYSTYPE_SVR4) \
+ || defined(__SYSTYPE_SVR4__)
+# define IRIX5 /* or IRIX 6.X */
+# else
+# define RISCOS /* or IRIX 4.X */
+# endif
+# endif
+# endif /* !LINUX */
# define mach_type_known
# endif
# if defined(sequent) && defined(i386)
# define SYSV
# define mach_type_known
# endif
-# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) \
+# if defined(_PA_RISC1_0) || defined(_PA_RISC1_1) || defined(_PA_RISC2_0) \
|| defined(hppa) || defined(__hppa__)
# define HP_PA
+# ifndef LINUX
+# define HPUX
+# endif
# define mach_type_known
# endif
# if defined(LINUX) && (defined(i386) || defined(__i386__))
# define I386
# define mach_type_known
# endif
+# if defined(LINUX) && (defined(__ia64__) || defined(__ia64))
+# define IA64
+# define mach_type_known
+# endif
# if defined(LINUX) && defined(powerpc)
# define POWERPC
# define mach_type_known
# define M68K
# define mach_type_known
# endif
-# if defined(LINUX) && defined(sparc)
+# if defined(LINUX) && (defined(sparc) || defined(__sparc__))
# define SPARC
# define mach_type_known
# endif
+# if defined(LINUX) && defined(arm)
+# define ARM32
+# define mach_type_known
+# endif
# if defined(__alpha) || defined(__alpha__)
# define ALPHA
# if !defined(LINUX)
# define CYGWIN32
# define mach_type_known
# endif
+# if defined(__MINGW32__)
+# define I386
+# define MSWIN32
+# define mach_type_known
+# endif
# if defined(__BORLANDC__)
# define I386
# define MSWIN32
# define UTS4
# define mach_type_known
# endif
+# if defined(__pj__)
+# define PJ
+# define mach_type_known
+# endif
/* Ivan Demakov */
# if defined(__WATCOMC__) && defined(__386__)
# define I386
/* (CX_UX and DGUX) */
/* S370 ==> 370-like machine */
/* running Amdahl UTS4 */
+ /* ARM32 ==> Intel StrongARM */
+ /* IA64 ==> Intel IA64 */
+ /* (e.g. Itanium) */
/*
*
* An architecture may define DYNAMIC_LOADING if dynamic_load.c
* defined GC_register_dynamic_libraries() for the architecture.
+ *
+ * An architecture may define PREFETCH(x) to preload the cache with *x.
+ * This defaults to a no-op.
+ *
+ * PREFETCH_FOR_WRITE(x) is used if *x is about to be written.
+ *
+ * An architecture may also define CLEAR_DOUBLE(x) to be a fast way to
+ * clear the two words at GC_malloc-aligned address x. By default,
+ * word stores of 0 are used instead.
*/
# undef STACK_GRAN
# define STACK_GRAN 0x10000000
/* Stack usually starts at 0x80000000 */
-# define DATASTART GC_data_start
+# define LINUX_DATA_START
extern int _end;
# define DATAEND (&_end)
# endif
# ifdef LINUX
# define OS_TYPE "LINUX"
# ifdef __ELF__
-# define DATASTART GC_data_start
-# define DYNAMIC_LOADING
+# define LINUX_DATA_START
+# define DYNAMIC_LOADING
# else
Linux Sparc non elf ?
# endif
# endif
# ifdef LINUX
# define OS_TYPE "LINUX"
-# define HEURISTIC1
-# undef STACK_GRAN
-# define STACK_GRAN 0x10000000
- /* STACKBOTTOM is usually 0xc0000000, but this changes with */
- /* different kernel configurations. In particular, systems */
- /* with 2GB physical memory will usually move the user */
- /* address space limit, and hence initial SP to 0x80000000. */
+# define LINUX_STACKBOTTOM
+# if 0
+# define HEURISTIC1
+# undef STACK_GRAN
+# define STACK_GRAN 0x10000000
+ /* STACKBOTTOM is usually 0xc0000000, but this changes with */
+ /* different kernel configurations. In particular, systems */
+ /* with 2GB physical memory will usually move the user */
+ /* address space limit, and hence initial SP to 0x80000000. */
+# endif
# if !defined(LINUX_THREADS) || !defined(REDIRECT_MALLOC)
# define MPROTECT_VDB
# else
# endif
# include <features.h>
# if defined(__GLIBC__) && __GLIBC__ >= 2
- extern int __data_start;
-# define DATASTART ((ptr_t)(&__data_start))
+# define LINUX_DATA_START
# else
extern char **__environ;
# define DATASTART ((ptr_t)(&__environ))
extern int etext;
# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
# endif
+# ifdef USE_I686_PREFETCH
+# define PREFETCH(x) \
+ __asm__ __volatile__ (" prefetchnta %0": : "m"(*(char *)(x)))
+ /* Empirically prefetcht0 is much more effective at reducing */
+ /* cache miss stalls for the targetted load instructions. But it */
+ /* seems to interfere enough with other cache traffic that the net */
+ /* result is worse than prefetchnta. */
+# if 0
+ /* Using prefetches for write seems to have a slight negative */
+ /* impact on performance, at least for a PIII/500. */
+# define PREFETCH_FOR_WRITE(x) \
+ __asm__ __volatile__ (" prefetcht0 %0": : "m"(*(char *)(x)))
+# endif
+# endif
+# ifdef USE_3DNOW_PREFETCH
+# define PREFETCH(x) \
+ __asm__ __volatile__ (" prefetch %0": : "m"(*(char *)(x)))
+# define PREFETCH_FOR_WRITE(x)
+ __asm__ __volatile__ (" prefetchw %0": : "m"(*(char *)(x)))
+# endif
# endif
# ifdef CYGWIN32
# define OS_TYPE "CYGWIN32"
# ifdef MIPS
# define MACH_TYPE "MIPS"
-# ifndef IRIX5
-# define DATASTART (ptr_t)0x10000000
- /* Could probably be slightly higher since */
- /* startup code allocates lots of stuff. */
-# else
- extern int _fdata;
-# define DATASTART ((ptr_t)(&_fdata))
-# ifdef USE_MMAP
-# define HEAP_START (ptr_t)0x30000000
-# else
-# define HEAP_START DATASTART
-# endif
- /* Lowest plausible heap address. */
- /* In the MMAP case, we map there. */
- /* In either case it is used to identify */
- /* heap sections so they're not */
- /* considered as roots. */
-# endif /* IRIX5 */
-# define HEURISTIC2
/* # define STACKBOTTOM ((ptr_t)0x7fff8000) sometimes also works. */
+# ifdef LINUX
+ /* This was developed for a linuxce style platform. Probably */
+ /* needs to be tweaked for workstation class machines. */
+# define OS_TYPE "LINUX"
+ extern int __data_start;
+# define DATASTART ((ptr_t)(&__data_start))
+# define ALIGNMENT 4
+# define USE_GENERIC_PUSH_REGS 1
+# define STACKBOTTOM 0x80000000
+ /* In many cases, this should probably use LINUX_STACKBOTTOM */
+ /* instead. But some kernel versions seem to give the wrong */
+ /* value from /proc. */
+# endif /* Linux */
# ifdef ULTRIX
+# define HEURISTIC2
+# define DATASTART (ptr_t)0x10000000
+ /* Could probably be slightly higher since */
+ /* startup code allocates lots of stuff. */
# define OS_TYPE "ULTRIX"
# define ALIGNMENT 4
# endif
# ifdef RISCOS
+# define HEURISTIC2
+# define DATASTART (ptr_t)0x10000000
# define OS_TYPE "RISCOS"
# define ALIGNMENT 4 /* Required by hardware */
# endif
# ifdef IRIX5
+# define HEURISTIC2
+ extern int _fdata;
+# define DATASTART ((ptr_t)(&_fdata))
+# ifdef USE_MMAP
+# define HEAP_START (ptr_t)0x30000000
+# else
+# define HEAP_START DATASTART
+# endif
+ /* Lowest plausible heap address. */
+ /* In the MMAP case, we map there. */
+ /* In either case it is used to identify */
+ /* heap sections so they're not */
+ /* considered as roots. */
# define OS_TYPE "IRIX5"
# define MPROTECT_VDB
# ifdef _MIPS_SZPTR
# endif
# ifdef HP_PA
+ /* OS is assumed to be HP/UX */
# define MACH_TYPE "HP_PA"
-# define ALIGNMENT 4
-# define ALIGN_DOUBLE
+# define OS_TYPE "HPUX"
+# ifdef __LP64__
+# define CPP_WORDSZ 64
+# define ALIGNMENT 8
+# else
+# define CPP_WORDSZ 32
+# define ALIGNMENT 4
+# define ALIGN_DOUBLE
+# endif
extern int __data_start;
# define DATASTART ((ptr_t)(&__data_start))
# if 0
# endif
# define STACK_GROWS_UP
# define DYNAMIC_LOADING
+# ifndef HPUX_THREADS
+# define MPROTECT_VDB
+# endif
# include <unistd.h>
# define GETPAGESIZE() sysconf(_SC_PAGE_SIZE)
- /* They misspelled the Posix macro? */
# endif
# ifdef ALPHA
# define MACH_TYPE "ALPHA"
# define ALIGNMENT 8
+# define USE_GENERIC_PUSH_REGS
+ /* Gcc and probably the DEC/Compaq compiler spill pointers to preserved */
+ /* fp registers in some cases when the target is a 21264. The assembly */
+ /* code doesn't handle that yet, and version dependencies make that a */
+ /* bit tricky. Do the easy thing for now. */
# ifdef OSF1
# define OS_TYPE "OSF1"
# define DATASTART ((ptr_t) 0x140000000)
# define CPP_WORDSZ 64
# define STACKBOTTOM ((ptr_t) 0x120000000)
# ifdef __ELF__
-# if 0
- /* __data_start apparently disappeared in some recent releases. */
- extern int __data_start;
-# define DATASTART &__data_start
-# endif
-# define DATASTART GC_data_start
+# define LINUX_DATA_START
# define DYNAMIC_LOADING
+ /* This doesn't work if the collector is in a dynamic library. */
# else
# define DATASTART ((ptr_t) 0x140000000)
# endif
# endif
# endif
+# ifdef IA64
+# define MACH_TYPE "IA64"
+# define ALIGN_DOUBLE
+ /* Requires 16 byte alignment for malloc */
+# define ALIGNMENT 8
+# define USE_GENERIC_PUSH_REGS
+ /* We need to get preserved registers in addition to register windows. */
+ /* That's easiest to do with setjmp. */
+# ifdef HPUX
+ --> needs work
+# endif
+# ifdef LINUX
+# define OS_TYPE "LINUX"
+# define CPP_WORDSZ 64
+ /* This should really be done through /proc, but that */
+ /* requires we run on an IA64 kernel. */
+# define STACKBOTTOM ((ptr_t) 0xa000000000000000l)
+ /* We also need the base address of the register stack */
+ /* backing store. There is probably a better way to */
+ /* get that, too ... */
+# define BACKING_STORE_BASE ((ptr_t) 0x9fffffff80000000l)
+# if 1
+# define SEARCH_FOR_DATA_START
+# define DATASTART GC_data_start
+# else
+ extern int data_start;
+# define DATASTART ((ptr_t)(&data_start))
+# endif
+# define DYNAMIC_LOADING
+# define MPROTECT_VDB
+ /* Requires Linux 2.3.47 or later. */
+ extern int _end;
+# define DATAEND (&_end)
+ /* PREFETCH appears to have a large performance impact. */
+# define PREFETCH(x) \
+ __asm__ (" lfetch [%0]": : "r"((void *)(x)))
+# define PREFETCH_FOR_WRITE(x) \
+ __asm__ (" lfetch.excl [%0]": : "r"((void *)(x)))
+# define CLEAR_DOUBLE(x) \
+ __asm__ (" stf.spill [%0]=f0": : "r"((void *)(x)))
+# endif
+# endif
+
# ifdef M88K
# define MACH_TYPE "M88K"
# define ALIGNMENT 4
# define HEURISTIC2
# endif
+# if defined(PJ)
+# define ALIGNMENT 4
+ extern int _etext;
+# define DATASTART ((ptr_t)(&_etext))
+# define HEURISTIC1
+# endif
+
+# ifdef ARM32
+# define CPP_WORDSZ 32
+# define MACH_TYPE "ARM32"
+# define ALIGNMENT 4
+# ifdef NETBSD
+# define OS_TYPE "NETBSD"
+# define HEURISTIC2
+ extern char etext;
+# define DATASTART ((ptr_t)(&etext))
+# define USE_GENERIC_PUSH_REGS
+# endif
+# ifdef LINUX
+# define OS_TYPE "LINUX"
+# define HEURISTIC1
+# undef STACK_GRAN
+# define STACK_GRAN 0x10000000
+# define USE_GENERIC_PUSH_REGS
+# ifdef __ELF__
+# define DYNAMIC_LOADING
+# include <features.h>
+# if defined(__GLIBC__) && __GLIBC__ >= 2
+# define LINUX_DATA_START
+# else
+ extern char **__environ;
+# define DATASTART ((ptr_t)(&__environ))
+ /* hideous kludge: __environ is the first */
+ /* word in crt0.o, and delimits the start */
+ /* of the data segment, no matter which */
+ /* ld options were passed through. */
+ /* We could use _etext instead, but that */
+ /* would include .rodata, which may */
+ /* contain large read-only data tables */
+ /* that we'd rather not scan. */
+# endif
+ extern int _end;
+# define DATAEND (&_end)
+# else
+ extern int etext;
+# define DATASTART ((ptr_t)((((word) (&etext)) + 0xfff) & ~0xfff))
+# endif
+# endif
+#endif
+
+#ifdef LINUX_DATA_START
+ /* Some Linux distributions arrange to define __data_start. Some */
+ /* define data_start as a weak symbol. The latter is technically */
+ /* broken, since the user program may define data_start, in which */
+ /* case we lose. Nonetheless, we try both, prefering __data_start. */
+ /* We assume gcc. */
+# pragma weak __data_start
+ extern int __data_start;
+# pragma weak data_start
+ extern int data_start;
+# define DATASTART ((ptr_t)(&__data_start != 0? &__data_start : &data_start))
+#endif
+
# ifndef STACK_GROWS_UP
# define STACK_GROWS_DOWN
# endif
# define SUNOS5SIGS
# endif
+# if defined(HPUX)
+# define SUNOS5SIGS
+# endif
+
# if CPP_WORDSZ != 32 && CPP_WORDSZ != 64
-> bad word size
# endif
# define DEFAULT_VDB
# endif
+# ifndef PREFETCH
+# define PREFETCH(x)
+# define NO_PREFETCH
+# endif
+
+# ifndef PREFETCH_FOR_WRITE
+# define PREFETCH_FOR_WRITE(x)
+# define NO_PREFETCH_FOR_WRITE
+# endif
+
+# ifndef CACHE_LINE_SIZE
+# define CACHE_LINE_SIZE 32 /* Wild guess */
+# endif
+
+# ifndef CLEAR_DOUBLE
+# define CLEAR_DOUBLE(x) \
+ ((word*)x)[0] = 0; \
+ ((word*)x)[1] = 0;
+# endif /* CLEAR_DOUBLE */
+
# if defined(_SOLARIS_PTHREADS) && !defined(SOLARIS_THREADS)
# define SOLARIS_THREADS
# endif
# if defined(SOLARIS_THREADS) && !defined(SUNOS5)
--> inconsistent configuration
# endif
+# if defined(HPUX_THREADS) && !defined(HPUX)
+--> inconsistent configuration
+# endif
# if defined(PCR) || defined(SRC_M3) || \
defined(SOLARIS_THREADS) || defined(WIN32_THREADS) || \
defined(IRIX_THREADS) || defined(LINUX_THREADS) || \
- defined(IRIX_JDK_THREADS)
+ defined(IRIX_JDK_THREADS) || defined(HPUX_THREADS)
# define THREADS
# endif
/* include assembly code to do it well. */
# endif
-# endif
+# endif /* GCCONFIG_H */
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