source: rtems-tools/tools/4.11/gdb/sparc/7.9/0011-sim-erc32-use-SIM_AC_OPTION_HOSTENDIAN-to-probe-for-.patch @ bfd2b7d

sim/erc32/Makefile.in

@@ -41 +41 @@
         $(CC) $(ALL_CFLAGS) -o sis \
           sis.o $(SIS_OFILES) $(COMMON_OBJS) $(EXTRA_LIBS)
 
-# FIXME: This computes the build host's endianness, doesn't it?
-# There is AC_C_BIGENDIAN but it doesn't handle float endianness.
-# [Are int/float endians every different on a sparc?]
-end: $(srcdir)/end.c
-        $(CC_FOR_BUILD) -I. $(srcdir)/end.c -o end
-end.h: end
-        ./end > end.h
-
 # Copy the files into directories where they will be run.
 install-sis: installdirs
         n=`echo sis | sed '$(program_transform_name)'`; \
         $(INSTALL_PROGRAM) sis$(EXEEXT) $(DESTDIR)$(bindir)/$$n$(EXEEXT)
 
 clean-sis:
-        rm -f sis end end.h
+        rm -f sis
 
 configure:
         @echo "Rebuilding configure..."
@@ -64 +56 @@
         else true ; fi ; \
         (cd $${srcdir}; autoconf --localdir=../common)
 
-# Circumvent Sun Make bug with VPATH.
-erc32.o: erc32.c sis.h end.h
-exec.o: exec.c sis.h end.h
-float.o: float.c sis.h end.h
-func.o: func.c sis.h end.h
-help.o: help.c sis.h end.h
-interf.o: interf.c sis.h end.h 
-sis.o: sis.c sis.h end.h

sim/erc32/config.in

@@ -1 +1 @@
 /* config.in.  Generated from configure.ac by autoheader.  */
 
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
 /* Define to 1 if translation of program messages to the user's native
    language is requested. */
 #undef ENABLE_NLS
@@ -135 +138 @@
 #endif
 
 
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+#  undef WORDS_BIGENDIAN
+# endif
+#endif
+
 /* Define to 1 if on MINIX. */
 #undef _MINIX
 

sim/erc32/configure

@@ -761 +761 @@
 enable_sim_profile
 with_pkgversion
 with_bugurl
+enable_sim_hostendian
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1403 +1404 @@
   --enable-sim-stdio                    Specify whether to use stdio for console input/output.
   --enable-sim-trace=opts               Enable tracing flags
   --enable-sim-profile=opts             Enable profiling flags
+  --enable-sim-hostendian=end           Specify host byte endian orientation.
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -8121 +8123 @@
       case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
         10.0,*86*-darwin8*|10.0,*-darwin[91]*)
           _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
-        10.[012]*)
+        10.[012][,.]*)
           _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
         10.*)
           _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
@@ -10144 +10146 @@
       if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
          && test "$tmp_diet" = no
       then
-        tmp_addflag=
+        tmp_addflag=' $pic_flag'
         tmp_sharedflag='-shared'
         case $cc_basename,$host_cpu in
         pgcc*)                          # Portland Group C compiler
@@ -12354 +12356 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12357 "configure"
+#line 12359 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12460 +12462 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12463 "configure"
+#line 12465 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13111 +13113 @@
 fi
 
 
+# Check whether --enable-sim-hostendian was given.
+if test "${enable_sim_hostendian+set}" = set; then :
+  enableval=$enable_sim_hostendian; case "${enableval}" in
+  no)    sim_hostendian="-DWITH_HOST_BYTE_ORDER=0";;
+  b*|B*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN";;
+  l*|L*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN";;
+  *)     as_fn_error "\"Unknown value $enableval for --enable-sim-hostendian\"" "$LINENO" 5; sim_hostendian="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_hostendian" != x""; then
+  echo "Setting hostendian flags = $sim_hostendian" 6>&1
+fi
+else
+
+if test "x$cross_compiling" = "xno"; then
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
+$as_echo_n "checking whether byte ordering is bigendian... " >&6; }
+if test "${ac_cv_c_bigendian+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_c_bigendian=unknown
+    # See if we're dealing with a universal compiler.
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifndef __APPLE_CC__
+               not a universal capable compiler
+             #endif
+             typedef int dummy;
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+        # Check for potential -arch flags.  It is not universal unless
+        # there are at least two -arch flags with different values.
+        ac_arch=
+        ac_prev=
+        for ac_word in $CC $CFLAGS $CPPFLAGS $LDFLAGS; do
+         if test -n "$ac_prev"; then
+           case $ac_word in
+             i?86 | x86_64 | ppc | ppc64)
+               if test -z "$ac_arch" || test "$ac_arch" = "$ac_word"; then
+                 ac_arch=$ac_word
+               else
+                 ac_cv_c_bigendian=universal
+                 break
+               fi
+               ;;
+           esac
+           ac_prev=
+         elif test "x$ac_word" = "x-arch"; then
+           ac_prev=arch
+         fi
+       done
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if sys/param.h defines the BYTE_ORDER macro.
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+             #include <sys/param.h>
+
+int
+main ()
+{
+#if ! (defined BYTE_ORDER && defined BIG_ENDIAN \
+                     && defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN \
+                     && LITTLE_ENDIAN)
+              bogus endian macros
+             #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  # It does; now see whether it defined to BIG_ENDIAN or not.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+                #include <sys/param.h>
+
+int
+main ()
+{
+#if BYTE_ORDER != BIG_ENDIAN
+                 not big endian
+                #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_c_bigendian=yes
+else
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if <limits.h> defines _LITTLE_ENDIAN or _BIG_ENDIAN (e.g., Solaris).
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main ()
+{
+#if ! (defined _LITTLE_ENDIAN || defined _BIG_ENDIAN)
+              bogus endian macros
+             #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  # It does; now see whether it defined to _BIG_ENDIAN or not.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main ()
+{
+#ifndef _BIG_ENDIAN
+                 not big endian
+                #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_c_bigendian=yes
+else
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # Compile a test program.
+      if test "$cross_compiling" = yes; then :
+  # Try to guess by grepping values from an object file.
+         cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+short int ascii_mm[] =
+                  { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+                short int ascii_ii[] =
+                  { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+                int use_ascii (int i) {
+                  return ascii_mm[i] + ascii_ii[i];
+                }
+                short int ebcdic_ii[] =
+                  { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+                short int ebcdic_mm[] =
+                  { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+                int use_ebcdic (int i) {
+                  return ebcdic_mm[i] + ebcdic_ii[i];
+                }
+                extern int foo;
+
+int
+main ()
+{
+return use_ascii (foo) == use_ebcdic (foo);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then
+              ac_cv_c_bigendian=yes
+            fi
+            if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
+              if test "$ac_cv_c_bigendian" = unknown; then
+                ac_cv_c_bigendian=no
+              else
+                # finding both strings is unlikely to happen, but who knows?
+                ac_cv_c_bigendian=unknown
+              fi
+            fi
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+
+             /* Are we little or big endian?  From Harbison&Steele.  */
+             union
+             {
+               long int l;
+               char c[sizeof (long int)];
+             } u;
+             u.l = 1;
+             return u.c[sizeof (long int) - 1] == 1;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  ac_cv_c_bigendian=no
+else
+  ac_cv_c_bigendian=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+    fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_bigendian" >&5
+$as_echo "$ac_cv_c_bigendian" >&6; }
+ case $ac_cv_c_bigendian in #(
+   yes)
+     $as_echo "#define WORDS_BIGENDIAN 1" >>confdefs.h
+;; #(
+   no)
+      ;; #(
+   universal)
+
+$as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
+
+     ;; #(
+   *)
+     as_fn_error "unknown endianness
+ presetting ac_cv_c_bigendian=no (or yes) will help" "$LINENO" 5 ;;
+ esac
+
+  if test $ac_cv_c_bigendian = yes; then
+    sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN"
+  else
+    sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN"
+  fi
+else
+  sim_hostendian="-DWITH_HOST_BYTE_ORDER=0"
+fi
+fi
+
+
 ac_sources="$sim_link_files"
 ac_dests="$sim_link_links"
 while test -n "$ac_sources"; do
@@ -13245 +13496 @@
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
 
+
 : ${CONFIG_STATUS=./config.status}
 ac_write_fail=0
 ac_clean_files_save=$ac_clean_files

sim/erc32/configure.ac

@@ -32 +32 @@
                AC_ERROR([the required "readline" library is missing]), $TERMCAP)
 fi
 AC_SUBST(READLINE)
+SIM_AC_OPTION_HOSTENDIAN
 SIM_AC_OUTPUT

deleted file sim/erc32/end.c

@@ -1 @@
-#include "config.h"
-#include <stdio.h>
-
-int
-main()
-{
-
-    unsigned int    u1;
-    char           *c;
-    double          d1;
-    float          *f1;
-
-    c = (char *) &u1;
-    u1 = 0x0F;
-    if (c[0] == 0x0F)
-        puts("#define HOST_LITTLE_ENDIAN\n");
-    else
-        puts("#define HOST_BIG_ENDIAN\n");
-
-    d1 = 1.0;
-    f1 = (float *) &d1;
-    if (*((int *) f1) != 0x3ff00000)
-        puts("#define HOST_LITTLE_ENDIAN_FLOAT\n");
-    else
-        puts("#define HOST_BIG_ENDIAN_FLOAT\n");
-    return 0;
-}

sim/erc32/erc32.c

@@ -30 +30 @@
 #include <sys/file.h>
 #include <unistd.h>
 #include "sis.h"
-#include "end.h"
 #include "sim-config.h"
 
 extern int      ctrl_c;

sim/erc32/exec.c

@@ -21 +21 @@
 
 #include "config.h"
 #include "sis.h"
-#include "end.h"
 #include <math.h>
 #include <stdio.h>
 
@@ -1736 +1735 @@
        but what about machines where float values are different endianness
        from integer values? */
 
-#ifdef HOST_LITTLE_ENDIAN_FLOAT
+#ifdef HOST_LITTLE_ENDIAN
     rs1 &= 0x1f;
     switch (opf) {
         case FADDd:
@@ -1914 +1913 @@
 
     accex = get_accex();
 
-#ifdef HOST_LITTLE_ENDIAN_FLOAT
+#ifdef HOST_LITTLE_ENDIAN
     switch (opf) {
     case FADDd:
     case FDIVd:
@@ -2061 +2060 @@
     sregs->err_mode = 0;
     ext_irl = 0;
     sregs->g[0] = 0;
-#ifdef HOST_LITTLE_ENDIAN_FLOAT
+#ifdef HOST_LITTLE_ENDIAN
     sregs->fdp = (float32 *) sregs->fd;
     sregs->fsi = (int32 *) sregs->fs;
 #else

sim/erc32/func.c

@@ -26 +26 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include "sis.h"
-#include "end.h"
 #include <dis-asm.h>
 #include "sim-config.h"
 #include <inttypes.h>
@@ -734 +733 @@
 
     printf("\n fsr: %08X\n\n", sregs->fsr);
 
-#ifdef HOST_LITTLE_ENDIAN_FLOAT
+#ifdef HOST_LITTLE_ENDIAN
     for (i = 0; i < 32; i++)
       sregs->fdp[i ^ 1] = sregs->fs[i];
 #endif

sim/erc32/sis.h

@@ -23 +23 @@
 #include "ansidecl.h"
 #include "gdb/callback.h"
 #include "gdb/remote-sim.h"
+#include <sim-config.h>
 
-#include "end.h"
+#if WITH_HOST_BYTE_ORDER==BIG_ENDIAN
+#define HOST_BIG_ENDIAN
+#else
+#define HOST_LITTLE_ENDIAN
+#endif
 
 #define I_ACC_EXC 1
 
@@ -65 +70 @@
 struct pstate {
 
     float64         fd[16];     /* FPU registers */
-#ifdef HOST_LITTLE_ENDIAN_FLOAT
+#ifdef HOST_LITTLE_ENDIAN
     float32         fs[32];
     float32        *fdp;
 #else