[Gc] gc for GNU/kFreeBSD

[Petr Salinger]

Hello.

I tried to build gc 6.7 for GNU/kFreeBSD.
Basically it is FreeBSD kernel and glibc+linuxthreads 
in userspace, see https://glibc-bsd.alioth.debian.org/doc/intro.html.

Would be possible to add support via attached patch.
It adds only detection logic into setup.

Thanks for considering it.

Petr


-------------- next part --------------
diff -ur gc6.7/configure.in gc6.7/configure.in
--- gc6.7/configure.in	2006-02-17 05:07:50.000000000 +0100
+++ gc6.7/configure.in	2006-05-11 18:58:59.000000000 +0200
@@ -110,6 +110,17 @@
 	INCLUDES="$INCLUDES -pthread"
 	THREADDLLIBS=-pthread
       	;;
+     *-*-kfreebsd*-gnu)
+	AC_DEFINE(GC_FREEBSD_THREADS)
+	INCLUDES="$INCLUDES -pthread"
+	THREADDLLIBS=-pthread
+	AC_DEFINE(_REENTRANT)
+        if test "${enable_parallel_mark}" = yes; then
+	  AC_DEFINE(PARALLEL_MARK)
+	fi
+	AC_DEFINE(THREAD_LOCAL_ALLOC)
+	AC_DEFINE(USE_COMPILER_TLS)
+      	;;
      *-*-netbsd*)
 	AC_MSG_WARN("Only on NetBSD 2.0 or later.")
 	AC_DEFINE(GC_NETBSD_THREADS)
diff -ur gc6.7/dyn_load.c gc6.7/dyn_load.c
--- gc6.7/dyn_load.c	2006-02-16 22:13:55.000000000 +0100
+++ gc6.7/dyn_load.c	2006-05-11 18:29:02.000000000 +0200
@@ -26,7 +26,7 @@
  * None of this is safe with dlclose and incremental collection.
  * But then not much of anything is safe in the presence of dlclose.
  */
-#if defined(__linux__) && !defined(_GNU_SOURCE)
+#if (defined(__linux__) || defined(__GLIBC__)) && !defined(_GNU_SOURCE)
     /* Can't test LINUX, since this must be define before other includes */
 #   define _GNU_SOURCE
 #endif
@@ -381,7 +381,7 @@
 /* For glibc 2.2.4+.  Unfortunately, it doesn't work for older	*/
 /* versions.  Thanks to Jakub Jelinek for most of the code.	*/
 
-# if defined(LINUX) /* Are others OK here, too? */ \
+# if (defined(LINUX) || defined (__GLIBC__)) /* Are others OK here, too? */ \
      && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
          || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG))) 
 
diff -ur gc6.7/include/gc.h gc6.7/include/gc.h
--- gc6.7/include/gc.h	2006-02-18 02:03:40.000000000 +0100
+++ gc6.7/include/gc.h	2006-05-11 18:29:02.000000000 +0200
@@ -469,7 +469,7 @@
 #   define GC_RETURN_ADDR (GC_word)__return_address
 #endif
 
-#ifdef __linux__
+#if defined(__linux__) || defined(__GLIBC__)
 # include <features.h>
 # if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1 || __GLIBC__ > 2) \
      && !defined(__ia64__)
diff -ur gc6.7/include/private/gcconfig.h gc6.7/include/private/gcconfig.h
--- gc6.7/include/private/gcconfig.h	2006-02-17 05:34:18.000000000 +0100
+++ gc6.7/include/private/gcconfig.h	2006-05-11 18:37:53.000000000 +0200
@@ -55,7 +55,7 @@
 # endif
 
 /* And one for FreeBSD: */
-# if defined(__FreeBSD__) && !defined(FREEBSD)
+# if (defined(__FreeBSD__) || defined(__FreeBSD_kernel__)) && !defined(FREEBSD)
 #    define FREEBSD
 # endif
 
@@ -1249,8 +1249,15 @@
 #	ifndef GC_FREEBSD_THREADS
 #	    define MPROTECT_VDB
 #	endif
-#	define SIG_SUSPEND SIGUSR1
-#	define SIG_THR_RESTART SIGUSR2
+#	ifdef __GLIBC__
+#	    define SIG_SUSPEND		(32+6)
+#	    define SIG_THR_RESTART	(32+5)
+	    extern int _end[];
+#	    define DATAEND (_end)
+#	else
+#	    define SIG_SUSPEND SIGUSR1
+#	    define SIG_THR_RESTART SIGUSR2
+#	endif
 #	define FREEBSD_STACKBOTTOM
 #	ifdef __ELF__
 #	    define DYNAMIC_LOADING
@@ -1993,6 +2000,28 @@
 #	    define PREFETCH_FOR_WRITE(x) __builtin_prefetch((x), 1)
 #	endif
 #   endif
+#   ifdef FREEBSD
+#	define OS_TYPE "FREEBSD"
+#	ifndef GC_FREEBSD_THREADS
+#	    define MPROTECT_VDB
+#	endif
+#	ifdef __GLIBC__
+#	    define SIG_SUSPEND		(32+6)
+#	    define SIG_THR_RESTART	(32+5)
+	    extern int _end[];
+#	    define DATAEND (_end)
+#	else
+#	    define SIG_SUSPEND SIGUSR1
+#	    define SIG_THR_RESTART SIGUSR2
+#	endif
+#	define FREEBSD_STACKBOTTOM
+#	ifdef __ELF__
+#	    define DYNAMIC_LOADING
+#	endif
+	extern char etext[];
+	extern char * GC_FreeBSDGetDataStart();
+#	define DATASTART GC_FreeBSDGetDataStart(0x1000, &etext)
+#   endif
 #   ifdef NETBSD
 #	define OS_TYPE "NETBSD"
 #	ifdef __ELF__
@@ -2064,7 +2093,7 @@
 #   define SUNOS5SIGS
 # endif
 
-# if defined(FREEBSD) && (__FreeBSD__ >= 4)
+# if defined(FREEBSD) && ((__FreeBSD__ >= 4) || (__FreeBSD_kernel__ >= 4))
 #   define SUNOS5SIGS
 # endif
 
@@ -2132,7 +2161,7 @@
 #   define CACHE_LINE_SIZE 32	/* Wild guess	*/
 # endif
 
-# ifdef LINUX
+# if defined(LINUX) || defined(__GLIBC__)
 #   define REGISTER_LIBRARIES_EARLY
     /* We sometimes use dl_iterate_phdr, which may acquire an internal	*/
     /* lock.  This isn't safe after the world has stopped.  So we must	*/
@@ -2216,7 +2245,7 @@
 #if defined(SPARC)
 # define CAN_SAVE_CALL_ARGS
 #endif
-#if (defined(I386) || defined(X86_64)) && defined(LINUX)
+#if (defined(I386) || defined(X86_64)) && (defined(LINUX) || defined(__GLIBC__))
 	    /* 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_ARGS