sim: ppc: drop unused /dev/zero logic
Commit Message
Nothing in the tree checks this option, or has checked for decades.
The pre-cvs-import ChangeLog suggests this was added & removed back
then, but can't be sure as that history doesn't exist in the VCS.
---
sim/ppc/Makefile.in | 4 +---
sim/ppc/configure | 49 --------------------------------------------
sim/ppc/configure.ac | 28 -------------------------
sim/ppc/options.c | 4 ----
4 files changed, 1 insertion(+), 84 deletions(-)
@@ -74,7 +74,6 @@ FLOAT_CFLAGS = @sim_float@
MONITOR_CFLAGS = @sim_monitor@
MODEL_CFLAGS = @sim_model@ @sim_default_model@ @sim_model_issue@
TERMIO_CFLAGS = @sim_termio@
-DEVZERO_CFLAGS = @sim_devzero@
CONFIG_CFLAGS = \
$(SMP_CFLAGS) \
$(XOR_ENDIAN_CFLAGS) \
@@ -84,8 +83,7 @@ CONFIG_CFLAGS = \
$(FLOAT_CFLAGS) \
$(MONITOR_CFLAGS) \
$(MODEL_CFLAGS) \
- $(TERMIO_CFLAGS) \
- $(DEVZERO_CFLAGS)
+ $(TERMIO_CFLAGS)
SIM_FPU_CFLAGS = -DHAVE_COMMON_FPU -I../common -I${srcdir}/../common
STD_CFLAGS = $(CFLAGS) $(WERROR_CFLAGS) $(INLINE_CFLAGS) $(CONFIG_CFLAGS) $(WARN_CFLAGS) $(INCLUDES) $(INCGNU) $(SIM_FPU_CFLAGS)
@@ -490,33 +490,6 @@ fi
AC_CHECK_TYPES(long long)
-dnl Figure out if /dev/zero exists or not
-sim_devzero=""
-AC_MSG_CHECKING(for /dev/zero)
-AC_CACHE_VAL(ac_cv_devzero,
-[AC_TRY_RUN([#include <fcntl.h>
-main () {
- char buf[2048];
- int i;
- int fd = open ("/dev/zero", O_RDONLY);
- if (fd < 0)
- return 1;
- for (i = 0; i < sizeof (buf); i++)
- buf[i] = 1;
- if (read (fd, buf, sizeof (buf)) != sizeof (buf))
- return 1;
- for (i = 0; i < sizeof (buf); i++)
- if (buf[i])
- return 1;
- return 0;
-}],[ac_cv_devzero=yes],[ac_cv_devzero=no],[ac_cv_devzero=no])])
-AC_MSG_RESULT($ac_cv_devzero)
-if test $ac_cv_devzero = yes; then
- sim_devzero="-DHAVE_DEVZERO"
-else
- sim_devzero=""
-fi
-
# Since we run commands on the build system, we have to create a
# separate config header for the build system if build != host.
if test x$host = x$build; then
@@ -570,7 +543,6 @@ AC_SUBST(sim_model)
AC_SUBST(sim_default_model)
AC_SUBST(sim_model_issue)
AC_SUBST(sim_termio)
-AC_SUBST(sim_devzero)
AC_OUTPUT(Makefile,
[case x$CONFIG_HEADERS in xconfig.h:config.in) echo > stamp-h ;; esac])
@@ -198,10 +198,6 @@ print_options (void)
#ifdef HAVE_TERMIO_STRUCTURE
"HAVE_TERMIO_STRUCTURE",
#endif
-
-#ifdef HAVE_DEVZERO
- "HAVE_DEVZERO",
-#endif
};
int i;