[inseparable changes from match from perl-5.003_97 to perl-5.003_97a]

 CORE PORTABILITY

Subject: Add support for Cygwin32 (GNU-Win32) -- very low impact
Date: Thu, 3 Apr 1997 09:21:17 +0100
From: John Cerney <j-cerney1@ti.com>
Files: MANIFEST README.cygwin32 cygwin32/cw32imp.h cygwin32/gcc2 cygwin32/ld2 cygwin32/perlgcc cygwin32/perlld ext/DynaLoader/dl_cygwin32.xs hints/cygwin32.sh perl.h pp_sys.c
Msg-ID: 199704030821.JAA08762@pluto.tiuk.ti.com

    (applied based on p5p patch as commit 2a079e0090406b1b2e50643540f149206c9e9de8)

Subject: Win32 update (six patches)
From: Gurusamy Sarathy <gsar@engin.umich.edu>
Files: MANIFEST README.win32 dosish.h t/io/fs.t t/io/tell.t t/lib/io_tell.t t/op/magic.t t/op/mkdir.t t/op/runlevel.t t/op/stat.t t/op/taint.t win32/Makefile win32/VC-2.0/pod.mak win32/makedef.pl win32/pod.mak win32/win32.c win32/win32.h win32/win32io.c win32/win32io.h win32/win32iop.h

 LIBRARY AND EXTENSIONS

Subject: Math::Trig, based on (and from an author of) Math::Complex
From: Chip Salzenberg <chip@perl.com>
Files: MANIFEST lib/Math/Complex.pm lib/Math/Trig.pm pod/perldelta.pod t/lib/complex.t t/lib/trig.t

 OTHER CORE CHANGES

Subject: Fix const-sub-related panic on C<sub foo { my $x; 0 } foo>
From: Chip Salzenberg <chip@perl.com>
Files: op.c

Subject: Fix warning for useless C<1..2>
From: Chip Salzenberg <chip@perl.com>
Files: op.c

Subject: Minor cleanups
Date: Thu, 03 Apr 1997 19:56:57 -0500
From: Gurusamy Sarathy <gsar@engin.umich.edu>
Files: mg.c mg.h perl.c
Msg-ID: 199704040056.TAA22253@aatma.engin.umich.edu

    (applied based on p5p patch as commit 609794497049cf42bdd2396c04cbb7728e10374d)

Subject: Eliminate unreliable warning with %SIG and strict refs
From: Chip Salzenberg <chip@perl.com>
Files: mg.c

Subject: Fix impossible test in vivification
From: Chip Salzenberg <chip@perl.com>
Files: mg.c

1 files changed, 153 insertions, 0 deletions

diff --git a/ext/DynaLoader/dl_cygwin32.xs b/ext/DynaLoader/dl_cygwin32.xs
new file mode 100644
index 0000000000..2b7563764e
--- /dev/null
+++ b/ext/DynaLoader/dl_cygwin32.xs
@@ -0,0 +1,153 @@
+/* dl_cygwin32.xs
+ * 
+ * Platform:	Win32 (Windows NT/Windows 95)
+ * Author:	Wei-Yuen Tan (wyt@hip.com)
+ * Created:	A warm day in June, 1995
+ *
+ * Modified:
+ *    August 23rd 1995 - rewritten after losing everything when I
+ *                       wiped off my NT partition (eek!)
+ */
+/* Modified from the original dl_win32.xs to work with cygwin32
+   -John Cerney 3/26/97
+*/
+/* Porting notes:
+
+I merely took Paul's dl_dlopen.xs, took out extraneous stuff and
+replaced the appropriate SunOS calls with the corresponding Win32
+calls.
+
+*/
+
+#define WIN32_LEAN_AND_MEAN
+// Defines from windows needed for this function only. Can't include full
+//  Cygwin32 windows headers because of problems with CONTEXT redefinition
+//  Removed logic to tell not dynamically load static modules. It is assumed that all
+//   modules are dynamically built. This should be similar to the behavoir on sunOS.
+//   Leaving in the logic would have required changes to the standard perlmain.c code
+//
+// // Includes call a dll function to initialize it's impure_ptr.
+#include <stdio.h>
+void (*impure_setupptr)(struct _reent *);  // pointer to the impure_setup routine
+
+//#include <windows.h>
+#define LOAD_WITH_ALTERED_SEARCH_PATH	(8)
+typedef void *HANDLE;
+typedef HANDLE HINSTANCE;
+#define STDCALL     __attribute__ ((stdcall))
+typedef int STDCALL (*FARPROC)();
+
+HINSTANCE
+STDCALL
+LoadLibraryExA(
+	       char* lpLibFileName,
+	       HANDLE hFile,
+	       unsigned int dwFlags
+	       );
+unsigned int
+STDCALL
+GetLastError(
+	     void
+	     );
+FARPROC
+STDCALL
+GetProcAddress(
+	       HINSTANCE hModule,
+	       char* lpProcName
+	       );
+
+#include <string.h>
+
+#include "EXTERN.h"
+#include "perl.h"
+#include "XSUB.h"
+
+#include "dlutils.c"	/* SaveError() etc	*/
+
+static void
+dl_private_init()
+{
+    (void)dl_generic_private_init();
+}
+
+
+MODULE = DynaLoader	PACKAGE = DynaLoader
+
+BOOT:
+    (void)dl_private_init();
+
+void *
+dl_load_file(filename,flags=0)
+    char *		filename
+    int			flags
+    PREINIT:
+    CODE:
+    DLDEBUG(1,fprintf(stderr,"dl_load_file(%s):\n", filename));
+
+    RETVAL = (void*) LoadLibraryExA(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH ) ;
+
+    DLDEBUG(2,fprintf(stderr," libref=%x\n", RETVAL));
+    ST(0) = sv_newmortal() ;
+    if (RETVAL == NULL){
+	SaveError("%d",GetLastError()) ;
+    }
+    else{
+	// setup the dll's impure_ptr:
+	impure_setupptr = GetProcAddress(RETVAL, "impure_setup");
+	if( impure_setupptr == NULL){
+		printf(
+    "Cygwin32 dynaloader error: could not load impure_setup symbol\n");
+		RETVAL = NULL;		
+	}
+	else{
+		// setup the DLLs impure_ptr:
+		(*impure_setupptr)(_impure_ptr);
+		sv_setiv( ST(0), (IV)RETVAL);
+	}
+   }
+	
+
+
+void *
+dl_find_symbol(libhandle, symbolname)
+    void *	libhandle
+    char *	symbolname
+    CODE:
+    DLDEBUG(2,fprintf(stderr,"dl_find_symbol(handle=%x, symbol=%s)\n",
+	libhandle, symbolname));
+    RETVAL = (void*) GetProcAddress((HINSTANCE) libhandle, symbolname);
+    DLDEBUG(2,fprintf(stderr,"  symbolref = %x\n", RETVAL));
+    ST(0) = sv_newmortal() ;
+    if (RETVAL == NULL)
+	SaveError("%d",GetLastError()) ;
+    else
+	sv_setiv( ST(0), (IV)RETVAL);
+
+
+void
+dl_undef_symbols()
+    PPCODE:
+
+
+
+# These functions should not need changing on any platform:
+
+void
+dl_install_xsub(perl_name, symref, filename="$Package")
+    char *		perl_name
+    void *		symref 
+    char *		filename
+    CODE:
+    DLDEBUG(2,fprintf(stderr,"dl_install_xsub(name=%s, symref=%x)\n",
+		perl_name, symref));
+    ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)())symref, filename)));
+
+
+char *
+dl_error()
+    CODE:
+    RETVAL = LastError ;
+    OUTPUT:
+    RETVAL
+
+# end.