cover null default val
[m6w6/ext-psi] / m4 / psi / psi_decl.m4
index 9730839a5c1903f43f626202281dfeb556896b32..d699dd80d2db65345115003fd71afe5a8cbc0336 100644 (file)
@@ -1,38 +1,22 @@
 # psi_add_redir(name, symbol)
-# Add a function redirection to $PSI_REDIRS.
+# Add a function redirection to $PSI_REDIRS_H.
 psi_add_redir() {
-       cat >>$PSI_REDIRS <<EOF
-       {"$1", (psi_func_ptr) $2}, 
-EOF
+       PSI_REDIRS="$PSI_REDIRS
+       {\"$1\", (psi_func_ptr) $2},"
 }
 
 # psi_add_decl(decl, options)
-# Add a pre-defined decl to $PSI_VA_DECLS/$PSI_DECLS.
+# Add a pre-defined decl to $PSI_VA_DECLS_H/$PSI_DECLS_H.
 psi_add_decl() {
-       case "$2" in
- *functor*)
-               cat >>$PSI_FN_DECLS <<EOF
-       $1, {0},
-EOF
-               ;;
-       *vararg*)
-               cat >>$PSI_VA_DECLS <<EOF
-       $1, {0}, 
-EOF
-               ;;
-       *)
-               cat >>$PSI_DECLS <<EOF
-       $1, {0}, 
-EOF
-               ;;
-       esac
+       PSI_DECLS="$PSI_DECLS
+       $1, {0},"
 }
 
 dnl PSI_DECL_TYPE(type functor_name, args)
-dnl Adds a pre-defined functor decl to $PSI_FN_DECLS.
+dnl Adds a pre-defined functor decl to $PSI_FN_DECLS_H.
 AC_DEFUN(PSI_DECL_TYPE, [
-       PSI_DECL_ARGS($1, $2)
-       psi_add_decl "$psi_decl_args" functor
+       PSI_DECL_ARGS($1, $2, functor)
+       psi_add_decl "$psi_decl_args"
 ])
 dnl PSI_REDIR(name, custom symbol)
 dnl Create a function redirection to an optional custom symbol.
@@ -40,77 +24,96 @@ AC_DEFUN(PSI_REDIR, [
        psi_add_redir $1 ifelse([$2],[],[$1],[$2])
 ])
 
-dnl PSI_FUNC_LIBC_MAIN()
-dnl Check for the platforms default stub in executables.
-AC_DEFUN(PSI_FUNC_LIBC_MAIN, [
-       AC_REQUIRE([AC_PROG_AWK])
-       AC_CACHE_CHECK(for libc start main symbol, psi_cv_libc_main, [
-               psi_libc_main=
-               AC_TRY_LINK(PSI_INCLUDES, [(void)0;], [
-                       psi_libc_main=`nm -g conftest$ac_exeext | $AWK -F ' *|@' '/^@<:@@<:@:space:@:>@@:>@+U / {print$[]3; exit}'`
-               ])
-               psi_cv_libc_main=$psi_libc_main
-       ])
-])
-
-dnl PSI_DECL_ARGS(decl args)
+dnl PSI_DECL_ARGS(decl func, decl args, options)
 dnl INTERNAL: build psi_decl_args
 AC_DEFUN(PSI_DECL_ARGS, [
        psi_decl_args=
-       PSI_DECL_ARG($1)
+       PSI_DECL_ARG([$1], [$3])
        m4_case([$2],
                [(void)], [],
                [()], [],
-               [m4_map_args_sep([PSI_DECL_ARG(m4_normalize(], [))], [], m4_bregexp([$2], [(\(.*\))], [\1]))])
+               [], [],
+               [m4_map_args_sep(
+                       [PSI_DECL_ARG(m4_normalize(], 
+                       [), [0])], [], m4_bregexp([$2], [(\(.*\))], [\1]))])
 ])
 
-dnl PSI_DECL_ARG(decl arg)
+dnl PSI_DECL_ARG(decl arg, options)
 dnl INTERNAL: build psi_decl_args
 AC_DEFUN(PSI_DECL_ARG, [
-    m4_define([member_name], PSI_VAR_NAME($1))
-    m4_define([member_type], PSI_VAR_TYPE($1))
+    m4_define([member_name], PSI_VAR_NAME([$1]))
+    m4_define([member_type], PSI_VAR_TYPE([$1]))
 
        PSI_TYPE_INDIRECTION([$1],, pl, as)
     if test -n "$psi_decl_args"; then
         psi_decl_args="$psi_decl_args, "
     fi
-    psi_decl_args="[$psi_decl_args{]PSI_TYPE_PAIR(member_type)[, \"]member_name[\",] $pl, $as[}]"
+    psi_decl_args="[$psi_decl_args{]ifelse([$2],,DECL_KIND_STD,[ifelse([$2],0,0,AS_TR_CPP([DECL_KIND_$2]))])[, ]PSI_TYPE_PAIR(member_type)[, \"]member_name[\",] $pl, $as[}]"
 ])
 
-dnl PSI_DECL(type func, args, flags)
+dnl PSI_DECL(type func, args, flags, libs)
 dnl Check for a function or macro declaration and a possible asm redirection.
-dnl Adds a pre-defined (vararg) decl to $PSI_VA_DECLS/$PSI_DECLS.
-dnl Calls PSI_MACRO if PSI_FUNC fails. 
+dnl Adds a pre-defined (vararg) decl to $PSI_VA_DECLS_H/$PSI_DECLS_H.
+dnl Calls PSI_MACRO if PSI_FUNC fails.
 AC_DEFUN(PSI_DECL, [
-       AC_REQUIRE([PSI_FUNC_LIBC_MAIN])
-       PSI_DECL_ARGS($1, $2)
-       
+       PSI_DECL_ARGS($1, $2, $3)
+
        psi_symbol="PSI_VAR_NAME($1)"
        AC_CACHE_CHECK(for PSI_VAR_NAME($1), [psi_cv_fn_]PSI_VAR_NAME($1), [
+               psi_decl_check=
                psi_symbol_redirect=
-               AC_TRY_LINK(PSI_INCLUDES, [
-                       void (*fn)(void) = (void (*)(void)) $psi_symbol; (*fn)()
-               ], [
-                       psi_symbol_redirect=`nm -g conftest$ac_exeext | $AWK -F ' *|@' '/^@<:@@<:@:space:@:>@@:>@+U '$psi_cv_libc_main'/ {next} /^@<:@@<:@:space:@:>@@:>@+U / {print$[]3; exit}'`
-               ])
-               [psi_cv_fn_]PSI_VAR_NAME($1)=$psi_symbol_redirect
+               for lib in "" $4; do
+                       decl_save_LIBS=$LIBS
+                       LIBS=$lib
+                       AC_TRY_LINK(PSI_INCLUDES, [
+                               void (*fn)(long, long, long) = (void (*)(long,long,long)) $psi_symbol;
+                               fn(1,2,3);
+                       ], [
+                               psi_symbol_redirect=`nm -g conftest$ac_exeext | $AWK -F ' *|@' '/^@<:@@<:@:space:@:>@@:>@+U '$psi_cv_libc_main'/ {next} /^@<:@@<:@:space:@:>@@:>@+U / {print$[]3; exit}'`
+                       ])
+                       LIBS=$decl_save_LIBS
+
+                       if test -n "$psi_symbol_redirect"; then
+                               if test -n "$lib"; then
+                                       psi_decl_check="$psi_symbol_redirect in $lib"
+                               else
+                                       psi_decl_check="$psi_symbol_redirect"
+                               fi
+                               break
+                       fi
+               done
+               [psi_cv_fn_]PSI_VAR_NAME($1)=$psi_decl_check
        ])
-       case "$[psi_cv_fn_]PSI_VAR_NAME($1)" in
+
+       psi_symbol_redirect=`AS_ECHO("$[psi_cv_fn_]PSI_VAR_NAME($1)") | $AWK -F " in " '{print [$]1}'`
+       psi_symbol_libflag=`AS_ECHO("$[psi_cv_fn_]PSI_VAR_NAME($1)") | $AWK -F " in " '{print [$]2}'`
+
+       if test -n "$psi_symbol_libflag"; then
+               if ! expr "X$LIBS" : "X.*\b$psi_symbol_libflag\b" >/dev/null; then
+                       LIBS="$psi_symbol_libflag $LIBS"
+               fi
+       fi
+
+       case "$psi_symbol_redirect" in
        "$psi_symbol"|"_$psi_symbol")
-               case "$PHP_DEBUG-$3" in
-               "1-")
+               case "$PSI_EXTRA_REDIRS-$3" in
+               "true-")
                        PSI_MACRO($1, $2, [
                                psi_add_decl "$psi_decl_args"
                        ])
                        ;;
                *)
-                       psi_add_decl "$psi_decl_args" $3
+                       if test -n "$psi_symbol_libflag"
+                       then
+                               PSI_REDIR($psi_symbol)
+                       fi
+                       psi_add_decl "$psi_decl_args"
                        ;;
                esac
                ;;
        "")
                ifelse([$3], vararg, [
-                       AC_MSG_ERROR(varargs macro support is not implemented)
+                       AC_MSG_WARN(varargs macro support is not implemented)
                ],[
                        PSI_MACRO($1, $2, [
                                psi_add_decl "$psi_decl_args"
@@ -119,7 +122,7 @@ AC_DEFUN(PSI_DECL, [
                ;;
        *)
                PSI_REDIR($psi_symbol)
-               psi_add_decl "$psi_decl_args" $3
+               psi_add_decl "$psi_decl_args"
                ;;
        esac
 ])