From f8d49ce1f2e38dba84b97538980ddba3f8518818 Mon Sep 17 00:00:00 2001 From: zack Date: Tue, 6 Mar 2001 09:52:35 +0000 Subject: 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 --- libiberty/aclocal.m4 | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'libiberty/aclocal.m4') diff --git a/libiberty/aclocal.m4 b/libiberty/aclocal.m4 index c5628352773..7b1b677645e 100644 --- a/libiberty/aclocal.m4 +++ b/libiberty/aclocal.m4 @@ -134,3 +134,55 @@ define(AC_DEFINE_NOAUTOHEADER, [#define] $1 ifelse($#, 2, [$2], $#, 3, [$2], 1) EOF ]) + +# We always want a C version of alloca() compiled into libiberty, +# because native-compiler support for the real alloca is so !@#$% +# unreliable that GCC has decided to use it only when being compiled +# by GCC. This is the part of AC_FUNC_ALLOCA that calculates the +# information alloca.c needs. +AC_DEFUN(libiberty_AC_FUNC_C_ALLOCA, +[AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray, +[AC_EGREP_CPP(webecray, +[#if defined(CRAY) && ! defined(CRAY2) +webecray +#else +wenotbecray +#endif +], ac_cv_os_cray=yes, ac_cv_os_cray=no)]) +if test $ac_cv_os_cray = yes; then + for ac_func in _getb67 GETB67 getb67; do + AC_CHECK_FUNC($ac_func, + [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func, + [Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP + systems. This function is required for alloca.c support on those + systems.]) break]) + done +fi + +AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction, +[AC_TRY_RUN([find_stack_direction () +{ + static char *addr = 0; + auto char dummy; + if (addr == 0) + { + addr = &dummy; + return find_stack_direction (); + } + else + return (&dummy > addr) ? 1 : -1; +} +main () +{ + exit (find_stack_direction() < 0); +}], + ac_cv_c_stack_direction=1, + ac_cv_c_stack_direction=-1, + ac_cv_c_stack_direction=0)]) +AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction, + [Define if you know the direction of stack growth for your system; + otherwise it will be automatically deduced at run-time. + STACK_DIRECTION > 0 => grows toward higher addresses + STACK_DIRECTION < 0 => grows toward lower addresses + STACK_DIRECTION = 0 => direction of growth unknown]) +]) -- cgit v1.2.3