Subversion Repositories openrisc

#! /bin/sh

# Deduce values of standard ANSI and POSIX types (e.g. size_t, pid_t).

# Emits macros definitions for these, and some other types.

# Intended to be used to massage the sys-protos.h file.

# Expects one arg, which is the GCC source directory.

CC=${CC-"./xgcc -B$1/"}

CPP=${CPP-`echo ${CC} -E -I"$1/"`}

SED=sed

# Generate definitions for the standard types (such as mode_t)

# compatible with those in the standard C header files.

# It works by a dummy program through the C pre-processor, and then

# using sed to search for typedefs in the output.

cat >st-dummy.c <<!EOF!

#include <sys/types.h>

#include <stddef.h>

#include <stdarg.h>

#include <stdio.h>

#include <time.h>

#include <signal.h>

#ifdef size_t

typedef size_t Xsize_t;

#elif defined(__SIZE_TYPE__)

typedef __SIZE_TYPE__ Xsize_t;

#endif

#ifdef va_list

typedef va_list XXXva_list;

#endif

!EOF!

if ${CPP} st-dummy.c >TMP ; then true

else

  echo "scan-types: could not invoke ${CPP} on st-dummy.c" 1>&2 ; exit 1

fi

tr '    ' ' ' <TMP >st-dummy.out

for TYPE in dev_t clock_t fpos_t gid_t ino_t mode_t nlink_t off_t pid_t size_t ssize_t time_t uid_t va_list int32_t uint_32_t ; do

    IMPORTED=`eval 'echo $'"$TYPE"`

    if [ -n "${IMPORTED}" ] ; then

        eval "$TYPE='$IMPORTED"

    else

        # Search st-dummy.out for a typedef for $TYPE, and write it out

        # to TMP in #define syntax.

        rm -f TMP

        ${SED} -n -e "s|.*typedef  *\(.*\) X*$TYPE *;.*|\1|w TMP" <st-dummy.out>/dev/null

        # Now select the first definition.

        if [ -s TMP ]; then

            # VALUE is now the typedef'd definition of $TYPE.

            eval "VALUE='`${SED} -e 's| *$||' -e '2,$d' <TMP`'"

            # Unless VALUE contains a blank, look for a typedef for it

            # in turn (this could be a loop, but that would be over-kill).

            # Ensure $VALUE is double quoted to protect cases where it

            # contains an asterisk and would cause filename expansion.

            # E.g. when va_list is "char *".

            if echo "$VALUE" | grep " " >/dev/null ; then true

            else

                rm -f TMP

                ${SED} -n -e "s|.*typedef[      ][      ]*\(.*[^a-zA-Z0-9_]\)${VALUE}[  ]*;.*|\1|w TMP" <st-dummy.out>/dev/null

                if [ -s TMP ]; then

                    eval "VALUE='`${SED} -e '2,$d' -e 's|[      ]*$||' <TMP`'"

                fi

            fi

            eval "$TYPE='$VALUE'"

        fi

    fi

done

cat <<!EOF!

#define ${macro_prefix}clock_t ${clock_t-int /* default */}

#define ${macro_prefix}dev_t ${dev_t-int /* default */}

#define ${macro_prefix}fpos_t ${fpos_t-long /* default */}

#define ${macro_prefix}gid_t ${gid_t-int /* default */}

#define ${macro_prefix}ino_t ${ino_t-int /* default */}

#define ${macro_prefix}mode_t ${mode_t-int /* default */}

#define ${macro_prefix}nlink_t ${nlink_t-int /* default */}

#define ${macro_prefix}off_t ${off_t-long /* default */}

#define ${macro_prefix}pid_t ${pid_t-int /* default */}

#define ${macro_prefix}ptrdiff_t __PTRDIFF_TYPE__

#define ${macro_prefix}size_t __SIZE_TYPE__

#define ${macro_prefix}time_t ${time_t-int /* default */}

#define ${macro_prefix}uid_t ${uid_t-int /* default */}

#define ${macro_prefix}wchar_t __WCHAR_TYPE__

#define ${macro_prefix}int32_t ${int32_t-int /* default */}

#define ${macro_prefix}uint32_t ${uint32_t-unsigned int /* default */}

!EOF!

# (wait_arg_t*) should be (int*), according to Posix, but

# BSD traditionally used (union wait*).  Use (void*) to allow either usage.

echo "#define ${macro_prefix}wait_arg_t void"

# ssize_t is the signed version of size_t

if [ -n "${ssize_t}" ] ; then

    echo "#define ${macro_prefix}ssize_t ${ssize_t}"

elif [ -z "${size_t}" ] ; then

    echo "#define ${macro_prefix}ssize_t long"

else

    # Remove "unsigned" from ${size_t} to get ${ssize_t}.

    tmp="`echo ${size_t} | ${SED} -e 's|unsigned||g' -e 's|  | |g'`"

    if [ -z "$tmp" ] ; then

        tmp=int

    else

        # check $tmp doesn't conflict with <unistd.h>

        echo "#include <unistd.h>

        extern $tmp read();" >st-dummy.c

        ${CC} -c st-dummy.c >/dev/null 2>&1 || tmp=int

    fi

    echo "#define ${macro_prefix}ssize_t $tmp /* default */"

fi

# va_list can cause problems (e.g. some systems have va_list as a struct).

# Check to see if ${va_list-char*} really is compatible with stdarg.h.

cat >st-dummy.c <<!EOF!

#define X_va_list ${va_list-char* /* default */}

extern long foo(X_va_list ap); /* Check that X_va_list compiles on its own */

#include <stdarg.h>

long foo(X_va_list ap) { return va_arg(ap, long); }

long bar(int i, ...)

{ va_list ap; long j; va_start(ap, i); j = foo(ap); va_end(ap); return j; }

!EOF!

if ${CC} -c st-dummy.c >/dev/null 2>&1 ; then

  # Ok: We have something that works.

  echo "#define ${macro_prefix}va_list ${va_list-char* /* default */}"

else

  # No, it breaks.  Indicate that <stdarg.h> must be included.

  echo "#define ${macro_prefix}NEED_STDARG_H

#define ${macro_prefix}va_list va_list"

fi

# stuff needed for curses.h

# This isn't correct for SVR4 (for example).  However, we only

# use this when adding a missing prototype, so it shouldn't matter.

echo "#define chtype int"

# sys-protos.h uses non-standard names (due to the CHTYPE argument problem).

echo "#define box32 box"

echo "#define initscr32 initscr"

echo "#define w32addch waddch"

echo "#define w32insch winsch"

rm -f st-dummy.c st-dummy.o TMP st-dummy.out