diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/scan-types.sh')
| -rwxr-xr-x | gcc-4.2.1-5666.3/gcc/scan-types.sh | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/scan-types.sh b/gcc-4.2.1-5666.3/gcc/scan-types.sh new file mode 100755 index 000000000..59d786a9f --- /dev/null +++ b/gcc-4.2.1-5666.3/gcc/scan-types.sh @@ -0,0 +1,142 @@ +#! /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 |