libiberty:

	* aclocal.m4 (libiberty_AC_FUNC_C_ALLOCA): New.
	* configure.in: Replace all alloca logic with a simple use of
	the above new macro.
	* config.table: Kill *-*-beos* entry.
	* config/mh-beos: Delete.
	* configure, config.in: Regenerate.

	* Makefile.in (ALLOCA, HFILES): Kill.
	(REQUIRED_OFILES): Add alloca.o.
	(alloca.o): Depend on libiberty.h.
	(argv.o): Don't depend on alloca-conf.h.
	* alloca-conf.h: Delete.
	* alloca.c: Include libiberty.h.  Kill all #ifdef emacs
	blocks.  Provide the C alloca unconditionally.  Use PTR where
	appropriate.  Make i00afunc static.
	* argv.c: Don't include alloca-conf.h.

include:
	* libiberty.h: Prototype C_alloca; define alloca to either
	__builtin_alloca or C_alloca as appropriate.

gcc:
	* aclocal.m4 (AM_GNU_GETTEXT): Don't AC_REQUIRE
	AC_FUNC_ALLOCA.
	* configure, config.in: Regenerate.
	* config.gcc: Remove references to deleted files.

	* genattr.c, genattrtab.c, genextract.c, genoutput.c,
	genrecog.c, rtl.c: Do not use alloca anywhere.

	* Makefile.in, build-make, system.h, config/x-interix,
	config/x-svr4, config/xm-interix.h, config/xm-openbsd.h,
	config/alpha/xm-alpha.h, config/alpha/xm-vms.h,
	config/arc/xm-arc.h, config/arm/xm-arm.h,
	config/d30v/xm-d30v.h, config/dsp16xx/xm-dsp16xx.h,
	config/h8300/xm-h8300.h, config/i370/x-oe,
	config/i370/xm-linux.h, config/i386/x-aix, config/i386/x-beos,
	config/i386/x-ncr3000, config/i386/x-sco5,
	config/i386/xm-dgux.h, config/i860/x-sysv4,
	config/i960/xm-i960.h, config/m32r/xm-m32r.h,
	config/m68k/x-crds, config/m68k/x-dpx2, config/m68k/x-hp320,
	config/m68k/x-hp320g, config/m69k/x-mot3300,
	config/m68k/x-mot3300-gas, config/m68k/xm-amix.h,
	config/m68k/xm-hp320.h, config/m68k/xm-m68kv.h,
	config/m68k/xm-mot3300.h, config/m88k/x-dolph,
	config/m88k/x-sysv4, config/m88k/x-tekXD88,
	config/m88k/xm-m88k.h, config/mcore/xm-mcore.h,
	config/mips/x-iris, config/mips/x-iris3,
	config/mips/x-sni-svr4, config/mips/x-sysv,
	config/mips/xm-iris6.h, config/mips/xm-mips.h,
	config/mips/xm-nws3250v4.h, config/pa/x-hpux,
	config/pa/x-pa-mpeix, config/pa/xm-pa.h,
	config/pa/xm-pa64hpux.h, config/pa/xm-pahpux.h,
	config/pa/xm-papro.h, config/romp/xm-romp.h,
	config/rs6000/x-aix31, config/rs6000/x-aix41,
	config/rs6000/x-beos, config/rs6000/x-lynx,
	config/rs6000/x-mach, config/rs6000/x-rs6000,
	config/rs6000/x-sysv4, config/rs6000/xm-rs6000.h,
	config/rs6000/xm-sysv4.h, config/sh/xm-sh.h,
	config/sparc/x-sysv4, config/sparc/xm-linux.h,
	config/sparc/xm-pbd.h, config/sparc/xm-sparc.h,
	config/vax/xm-vms.h: Eradicate all references to alloca and
	related stuff.

	* config/xm-alloca.h, config/clipper/x-clix,
	config/i386/xm-sysv4.h, config/i860/x-fx2800,
	config/i860/x-sysv3, config/m88k/x-sysv3,
	config/sparc/xm-sol2.h, config/we32k/x-we32k: Delete
	(contained only alloca related hacks).

	* config/i386/xm-beos.h, config/rs6000/xm-beos.h: Just define
	USE_C_ALLOCA.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@40259 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 65 deletions

diff --git a/libiberty/alloca.c b/libiberty/alloca.c
index 0f8a21511db..bf105d80f0f 100644
--- a/libiberty/alloca.c
+++ b/libiberty/alloca.c
@@ -25,6 +25,8 @@
 #include <config.h>
 #endif
 
+#include <libiberty.h>
+
 #ifdef HAVE_STRING_H
 #include <string.h>
 #endif
@@ -32,67 +34,20 @@
 #include <stdlib.h>
 #endif
 
-#ifdef emacs
-#include "blockinput.h"
-#endif
-
-/* If compiling with GCC 2, this file's not needed.  Except of course if
-   the C alloca is explicitly requested.  */
-#if defined (USE_C_ALLOCA) || !defined (__GNUC__) || __GNUC__ < 2
-
-/* If someone has defined alloca as a macro,
-   there must be some other way alloca is supposed to work.  */
-#ifndef alloca
-
-#ifdef emacs
-#ifdef static
-/* actually, only want this if static is defined as ""
-   -- this is for usg, in which emacs must undefine static
-   in order to make unexec workable
-   */
-#ifndef STACK_DIRECTION
-you
-lose
--- must know STACK_DIRECTION at compile-time
-#endif /* STACK_DIRECTION undefined */
-#endif /* static */
-#endif /* emacs */
-
 /* If your stack is a linked list of frames, you have to
    provide an "address metric" ADDRESS_FUNCTION macro.  */
 
 #if defined (CRAY) && defined (CRAY_STACKSEG_END)
-long i00afunc ();
+static long i00afunc ();
 #define ADDRESS_FUNCTION(arg) (char *) i00afunc (&(arg))
 #else
 #define ADDRESS_FUNCTION(arg) &(arg)
 #endif
 
-#if __STDC__
-typedef void *pointer;
-#else
-typedef char *pointer;
-#endif
-
 #ifndef NULL
 #define	NULL	0
 #endif
 
-/* Different portions of Emacs need to call different versions of
-   malloc.  The Emacs executable needs alloca to call xmalloc, because
-   ordinary malloc isn't protected from input signals.  On the other
-   hand, the utilities in lib-src need alloca to call malloc; some of
-   them are very simple, and don't have an xmalloc routine.
-
-   Non-Emacs programs expect this to call use xmalloc.
-
-   Callers below should use malloc.  */
-
-#ifndef emacs
-#define malloc xmalloc
-#endif
-extern pointer malloc ();
-
 /* Define STACK_DIRECTION if you know the direction of stack
    growth for your system; otherwise it will be automatically
    deduced at run-time.
@@ -168,9 +123,9 @@ static header *last_alloca_header = NULL;	/* -> last alloca header.  */
    caller, but that method cannot be made to work for some
    implementations of C, for example under Gould's UTX/32.  */
 
-pointer
-alloca (size)
-     unsigned size;
+PTR
+C_alloca (size)
+     size_t size;
 {
   auto char probe;		/* Probes stack depth: */
   register char *depth = ADDRESS_FUNCTION (probe);
@@ -186,17 +141,13 @@ alloca (size)
   {
     register header *hp;	/* Traverses linked list.  */
 
-#ifdef emacs
-    BLOCK_INPUT;
-#endif
-
     for (hp = last_alloca_header; hp != NULL;)
       if ((STACK_DIR > 0 && hp->h.deep > depth)
 	  || (STACK_DIR < 0 && hp->h.deep < depth))
 	{
 	  register header *np = hp->h.next;
 
-	  free ((pointer) hp);	/* Collect garbage.  */
+	  free ((PTR) hp);	/* Collect garbage.  */
 
 	  hp = np;		/* -> next header.  */
 	}
@@ -204,10 +155,6 @@ alloca (size)
 	break;			/* Rest are not deeper.  */
 
     last_alloca_header = hp;	/* -> last valid storage.  */
-
-#ifdef emacs
-    UNBLOCK_INPUT;
-#endif
   }
 
   if (size == 0)
@@ -216,7 +163,7 @@ alloca (size)
   /* Allocate combined header + user data storage.  */
 
   {
-    register pointer new = malloc (sizeof (header) + size);
+    register PTR new = xmalloc (sizeof (header) + size);
     /* Address of header.  */
 
     if (new == 0)
@@ -229,7 +176,7 @@ alloca (size)
 
     /* User storage begins just after header.  */
 
-    return (pointer) ((char *) new + sizeof (header));
+    return (PTR) ((char *) new + sizeof (header));
   }
 }
 
@@ -500,6 +447,3 @@ i00afunc (long address)
 
 #endif /* not CRAY2 */
 #endif /* CRAY */
-
-#endif /* no alloca */
-#endif /* not GCC version 2 */