add locale stubs so we can compile libcxx

Makefile

@@ -18,7 +18,7 @@ MAKE    ?= make
 DESTDIR ?= /opt/ps5-payload-sdk
 
 TOPTARGETS := all clean install
-SUBDIRS    := crt sce_stubs include host
+SUBDIRS    := crt sce_stubs locale include host
 
 $(TOPTARGETS): $(SUBDIRS)
 

host/bin/prospero-clang++

@@ -27,7 +27,6 @@ export PATH=${SCRIPT_DIR}:$PATH
 exec -a "${SCRIPT_NAME}" "${SCRIPT_DIR}/clang++" \
      -target x86_64-sie-ps5 \
      -isysroot "${PS5_PAYLOAD_SDK}" \
-     -isystem "${PS5_PAYLOAD_SDK}/target/include" \
      -stdlib++-isystem "${PS5_PAYLOAD_SDK}/target/include/c++/v1" \
      -fno-stack-protector -fno-plt \
      "$@"

host/bin/prospero-lld

@@ -38,5 +38,5 @@ exec "${BIN_PATH}" \
      -z max-page-size=0x4000 \
      -T "${PS5_PAYLOAD_SDK}/ldscripts/elf_x86_64.x" \
      -L "${PS5_PAYLOAD_SDK}/target/lib" \
-     -lScePosixForWebKit -lSceLibcInternal "${LIBKERNEL}" "$@" \
+     -lScePosixForWebKit -lSceLibcInternal -lc_locale "${LIBKERNEL}" "$@" \
      "${PS5_PAYLOAD_SDK}/target/lib/crt1.o"

locale/Makefile

@@ -0,0 +1,52 @@
+#   Copyright (C) 2024 John Törnblom
+#
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING. If not see
+# <http://www.gnu.org/licenses/>.
+
+DESTDIR ?= /opt/ps5-payload-sdk
+
+CCS := clang-18 clang-17 clang-16 clang-15 clang
+CCS := $(foreach CC,$(CCS),$(if $(shell command -v $(CC) 2> /dev/null),$(CC)))
+CC  := $(firstword $(CCS))
+ifndef CC
+    $(error No suitable compiler found)
+endif
+
+ARS := llvm-ar-18 llvm-ar-17 llvm-ar-16 llvm-ar-15 llvm-ar
+ARS := $(foreach LD,$(ARS),$(if $(shell command -v $(AR) 2> /dev/null),$(AR)))
+AR  := $(firstword $(ARS))
+ifndef AR
+    $(error No suitable archiver found)
+endif
+
+CFLAGS := -target x86_64-sie-ps5 -fPIC  -fno-plt -fno-stack-protector
+CFLAGS += -nobuiltininc -isystem ../include/freebsd
+
+SRCS := $(wildcard *.c)
+OBJS := $(SRCS:.c=.o)
+
+ARCHIVE := libc_locale.a
+
+all: $(ARCHIVE)
+
+$(ARCHIVE): $(OBJS)
+	ar -rsc $@ $^
+
+clean:
+	rm -f *.a *.o
+
+install: $(ARCHIVE)
+	install -d $(DESTDIR)/target/lib
+	install $^ $(DESTDIR)/target/lib
+

locale/mbsnrtowcs.c

@@ -0,0 +1,78 @@
+/*
+Copyright © 2005-2020 Rich Felker, et al.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <wchar.h>
+
+size_t mbsnrtowcs(wchar_t *restrict wcs, const char **restrict src, size_t n, size_t wn, mbstate_t *restrict st)
+{
+	size_t l, cnt=0, n2;
+	wchar_t *ws, wbuf[256];
+	const char *s = *src;
+	const char *tmp_s;
+
+	if (!wcs) ws = wbuf, wn = sizeof wbuf / sizeof *wbuf;
+	else ws = wcs;
+
+	/* making sure output buffer size is at most n/4 will ensure
+	 * that mbsrtowcs never reads more than n input bytes. thus
+	 * we can use mbsrtowcs as long as it's practical.. */
+
+	while ( s && wn && ( (n2=n/4)>=wn || n2>32 ) ) {
+		if (n2>=wn) n2=wn;
+		tmp_s = s;
+		l = mbsrtowcs(ws, &s, n2, st);
+		if (!(l+1)) {
+			cnt = l;
+			wn = 0;
+			break;
+		}
+		if (ws != wbuf) {
+			ws += l;
+			wn -= l;
+		}
+		n = s ? n - (s - tmp_s) : 0;
+		cnt += l;
+	}
+	if (s) while (wn && n) {
+		l = mbrtowc(ws, s, n, st);
+		if (l+2<=2) {
+			if (!(l+1)) {
+				cnt = l;
+				break;
+			}
+			if (!l) {
+				s = 0;
+				break;
+			}
+			/* have to roll back partial character */
+			*(unsigned *)st = 0;
+			break;
+		}
+		s += l; n -= l;
+		/* safe - this loop runs fewer than sizeof(wbuf)/8 times */
+		ws++; wn--;
+		cnt++;
+	}
+	if (wcs) *src = s;
+	return cnt;
+}