clang

unvendor

06/recipes/1-stage1/hello.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+
+#ifndef RECIPES_STAGE1
+#define RECIPES_STAGE1 "/recipes/1-stage1"
+#endif
+#define SOURCE_PATH RECIPES_STAGE1"/hello.c"
+
+int main(int argc, char** argv) {
+	printf("Hello world!\n2*2=%d\n", 2*2);
+
+	printf("Own source (%s):\n", SOURCE_PATH);
+	FILE* f = fopen(SOURCE_PATH, "r");
+	while (!feof(f)) {
+		fputc(fgetc(f), stdout);
+	}
+	if (ferror(f))
+		return 99;
+	fclose(f);
+
+	return 42;
+}

06/recipes/1-stage1/protobusybox.c

@@ -0,0 +1,46 @@
+extern int APPLET_MAIN(int argc, char** argv);  // templated in
+
+#include <string.h>
+#include <unistd.h>
+
+#include <errno.h>
+static inline int *get_perrno(void) { return &errno; }
+int *const bb_errno;
+
+char bb_common_bufsiz1[1024];
+
+const char *applet_name;
+int _argc;
+const char **_argv;
+
+int main(int argc, char** argv) {
+	int** bb_errno_ptr = &((int*) bb_errno);
+	*bb_errno_ptr = ((int*) get_perrno());
+	asm volatile ("":::"memory");  // counter optimizations
+
+	_argc = argc; _argv = argv;
+
+	applet_name = strrchr(argv[0], '/') \
+		      ? strrchr(argv[0], '/') + 1 \
+		      : argv[0];
+	return APPLET_MAIN(argc, argv);
+}
+
+void bb_show_usage(void) {
+	int i;
+	write(2 /* STDERR */, "protobusybox's show_usage stub\n", 31);
+	write(2 /* STDERR */, "ho help for you, sorry. argv[]: \n", 33);
+	for (i < 0; i < _argc; i++) {
+		write(2 /* STDERR */, "* `", 3);
+		write(2 /* STDERR */, _argv[i], strlen(_argv[i]));
+		write(2 /* STDERR */, "`\n", 2);
+	}
+	exit(1);
+}
+
+// appletlib replacement
+unsigned string_array_len(char **argv) {
+	unsigned i;
+	for (i = 0; argv[i]; i++);
+	return i;
+}

06/recipes/1-stage1/protobusybox.h

@@ -0,0 +1,240 @@
+#define NUM_APPLETS 1
+#define BB_GLOBAL_CONST
+#define BB_VER "1.36.1"
+#define AUTOCONF_TIMESTAMP
+#define _GNU_SOURCE
+
+extern char bb_common_bufsiz1[];
+#define setup_common_bufsiz() ((void)0)
+enum { COMMON_BUFSIZE = 1024 };
+
+#define CONFIG_BUSYBOX_EXEC_PATH "/proc/self/exe"
+#define CONFIG_FEATURE_COPYBUF_KB 256
+#define CONFIG_FEATURE_EDITING_MAX_LEN 1024
+#define CONFIG_GZIP_FAST 2
+#define CONFIG_UNAME_OSNAME "Linux"
+
+#define ENABLE_ASH_ALIAS 0
+#define ENABLE_ASH_BASH_COMPAT 0
+#define ENABLE_ASH_CMDCMD 1
+#define ENABLE_ASH_ECHO 0
+#define ENABLE_ASH_GETOPTS 1
+#define ENABLE_ASH_JOB_CONTROL 0
+#define ENABLE_ASH_MAIL 0
+#define ENABLE_ASH_PRINTF 1
+#define ENABLE_ASH_SLEEP 0
+#define ENABLE_ASH_TEST 1
+#define ENABLE_BB_ARCH 1
+#define ENABLE_BUNZIP2 0
+#define ENABLE_BZCAT 0
+#define ENABLE_DEBUG 0
+#define ENABLE_DESKTOP 1
+#define ENABLE_EGREP 0
+#define ENABLE_FEATURE_ALLOW_EXEC 0
+#define ENABLE_FEATURE_AWK_LIBM 0
+#define ENABLE_FEATURE_BZIP2_DECOMPRESS 1
+#define ENABLE_FEATURE_CLEAN_UP 0
+#define ENABLE_FEATURE_CP_REFLINK 0
+#define ENABLE_FEATURE_CROND_D 0
+#define ENABLE_FEATURE_CUT_REGEX 0
+#define ENABLE_FEATURE_EDITING 0
+#define ENABLE_FEATURE_FANCY_ECHO 1
+#define ENABLE_FEATURE_FIND_NOT 1
+#define ENABLE_FEATURE_FIND_PAREN 1
+#define ENABLE_FEATURE_FIND_PRUNE 1
+#define ENABLE_FEATURE_FIND_TYPE 1
+#define ENABLE_FEATURE_GZIP_DECOMPRESS 1
+#define ENABLE_FEATURE_HUMAN_READABLE 0
+#define ENABLE_FEATURE_LS_COLOR 0
+#define ENABLE_FEATURE_LS_FILETYPES 0
+#define ENABLE_FEATURE_LS_FOLLOWLINKS 0
+#define ENABLE_FEATURE_LS_RECURSIVE 0
+#define ENABLE_FEATURE_LS_SORTFILES 0
+#define ENABLE_FEATURE_LS_TIMESTAMPS 1
+#define ENABLE_FEATURE_LS_WIDTH 0
+#define ENABLE_FEATURE_NON_POSIX_CP 0
+#define ENABLE_FEATURE_PRESERVE_HARDLINKS 0
+#define ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS 0
+#define ENABLE_FEATURE_SEAMLESS_BZ2 1
+#define ENABLE_FEATURE_SEAMLESS_GZ 1
+#define ENABLE_FEATURE_SEAMLESS_LZMA 0
+#define ENABLE_FEATURE_SEAMLESS_XZ 1
+#define ENABLE_FEATURE_SEAMLESS_Z 0
+#define ENABLE_FEATURE_SHOW_THREADS 0
+#define ENABLE_FEATURE_SH_MATH 1
+#define ENABLE_FEATURE_SH_READ_FRAC 0
+#define ENABLE_FEATURE_SYSLOG 0
+#define ENABLE_FEATURE_TAR_AUTODETECT 1
+#define ENABLE_FEATURE_TAR_CREATE 1
+#define ENABLE_FEATURE_TAR_GNU_EXTENSIONS 1
+#define ENABLE_FEATURE_TAR_LONG_OPTIONS 1
+#define ENABLE_FEATURE_TAR_OLDGNU_COMPATIBILITY 1
+#define ENABLE_FEATURE_TAR_OLDSUN_COMPATIBILITY 0
+#define ENABLE_FEATURE_TOPMEM 1
+#define ENABLE_FEATURE_TOP_SMP_PROCESS 0
+#define ENABLE_FEATURE_TOUCH_SUSV3 1
+#define ENABLE_FEATURE_TR_CLASSES 0
+#define ENABLE_FEATURE_TR_EQUIV 0
+#define ENABLE_FEATURE_USE_SENDFILE 0
+#define ENABLE_FEATURE_VERBOSE 0
+#define ENABLE_FGREP 0
+#define ENABLE_FTPD 0
+#define ENABLE_HUSH_PRINTF 0
+#define ENABLE_HUSH_TEST 0
+#define ENABLE_KILLALL 0
+#define ENABLE_LOCALE_SUPPORT 1
+#define ENABLE_LONG_OPTS 1
+#define ENABLE_LZCAT 0
+#define ENABLE_PGREP 0
+#define ENABLE_PIDOF 0
+#define ENABLE_PKILL 0
+#define ENABLE_SELINUX 0
+#define ENABLE_SESTATUS 0
+#define ENABLE_TAR 1
+#define ENABLE_TEST1 0
+#define ENABLE_TEST2 0
+#define ENABLE_UNAME 0
+#define ENABLE_UNLZMA 0
+#define ENABLE_ZCAT 0
+
+#define IF_AR(...)
+#define IF_ASH_ALIAS(...)
+#define IF_ASH_BASH_COMPAT(...)
+#define IF_ASH_EXPAND_PRMT(...)
+#define IF_ASH_HELP(...)
+#define IF_ASH_OPTIMIZE_FOR_SIZE(...)
+#define IF_BASENAME(...)
+#define IF_BUNZIP2(...)
+#define IF_BZCAT(...)
+#define IF_BZIP2(...) __VA_ARGS__
+#define IF_CAT(...)
+#define IF_CHGRP(...)
+#define IF_CHMOD(...)
+#define IF_CHOWN(...)
+#define IF_CHROOT(...)
+#define IF_CHVT(...)
+#define IF_CKSUM(...)
+#define IF_CLEAR(...)
+#define IF_CPIO(...)
+#define IF_DEALLOCVT(...)
+#define IF_DESKTOP(...) __VA_ARGS__
+#define IF_DPKG(...)
+#define IF_DPKG_DEB(...)
+#define IF_DUMPKMAP(...)
+#define IF_ECHO(...) __VA_ARGS__
+#define IF_EXTRA_COMPAT(...)
+#define IF_FEATURE_AWK_GNU_EXTENSIONS(...)
+#define IF_FEATURE_BZIP2_DECOMPRESS(...) __VA_ARGS__
+#define IF_FEATURE_CATN(...)
+#define IF_FEATURE_CATV(...)
+#define IF_FEATURE_CP_REFLINK(...)
+#define IF_FEATURE_CUT_REGEX(...)
+#define IF_FEATURE_FIND_AMIN(...)
+#define IF_FEATURE_FIND_ATIME(...)
+#define IF_FEATURE_FIND_CMIN(...)
+#define IF_FEATURE_FIND_CONTEXT(...)
+#define IF_FEATURE_FIND_CTIME(...)
+#define IF_FEATURE_FIND_DELETE(...)
+#define IF_FEATURE_FIND_DEPTH(...)
+#define IF_FEATURE_FIND_EMPTY(...)
+#define IF_FEATURE_FIND_EXEC(...)
+#define IF_FEATURE_FIND_EXECUTABLE(...)
+#define IF_FEATURE_FIND_EXEC_PLUS(...)
+#define IF_FEATURE_FIND_GROUP(...)
+#define IF_FEATURE_FIND_INUM(...)
+#define IF_FEATURE_FIND_LINKS(...)
+#define IF_FEATURE_FIND_MAXDEPTH(...)
+#define IF_FEATURE_FIND_MMIN(...)
+#define IF_FEATURE_FIND_MTIME(...)
+#define IF_FEATURE_FIND_NEWER(...)
+#define IF_FEATURE_FIND_NOT(...) __VA_ARGS__
+#define IF_FEATURE_FIND_PAREN(...) __VA_ARGS__
+#define IF_FEATURE_FIND_PATH(...)
+#define IF_FEATURE_FIND_PERM(...)
+#define IF_FEATURE_FIND_PRINT0(...)
+#define IF_FEATURE_FIND_PRUNE(...) __VA_ARGS__
+#define IF_FEATURE_FIND_QUIT(...)
+#define IF_FEATURE_FIND_REGEX(...)
+#define IF_FEATURE_FIND_SAMEFILE(...)
+#define IF_FEATURE_FIND_SIZE(...)
+#define IF_FEATURE_FIND_TYPE(...) __VA_ARGS__
+#define IF_FEATURE_FIND_USER(...)
+#define IF_FEATURE_FIND_XDEV(...)
+#define IF_FEATURE_GREP_CONTEXT(...)
+#define IF_FEATURE_GZIP_DECOMPRESS(...) __VA_ARGS__
+#define IF_FEATURE_HUMAN_READABLE(...)
+#define IF_FEATURE_INSTALL_LONG_OPTIONS(...)
+#define IF_FEATURE_LS_COLOR(...)
+#define IF_FEATURE_LS_FILETYPES(...)
+#define IF_FEATURE_LS_FOLLOWLINKS(...)
+#define IF_FEATURE_LS_RECURSIVE(...)
+#define IF_FEATURE_LS_SORTFILES(...)
+#define IF_FEATURE_LS_TIMESTAMPS(...) __VA_ARGS__
+#define IF_FEATURE_LS_WIDTH(...)
+#define IF_FEATURE_SEAMLESS_BZ2(...) __VA_ARGS__
+#define IF_FEATURE_SEAMLESS_GZ(...) __VA_ARGS__
+#define IF_FEATURE_SEAMLESS_LZMA(...)
+#define IF_FEATURE_SEAMLESS_XZ(...) __VA_ARGS__
+#define IF_FEATURE_SEAMLESS_Z(...)
+#define IF_FEATURE_SHOW_THREADS(...)
+#define IF_FEATURE_SH_MATH(...) __VA_ARGS__
+#define IF_FEATURE_TAR_AUTODETECT(...) __VA_ARGS__
+#define IF_FEATURE_TAR_CREATE(...) __VA_ARGS__
+#define IF_FEATURE_TAR_FROM(...) __VA_ARGS__
+#define IF_FEATURE_TAR_LONG_OPTIONS(...) __VA_ARGS__
+#define IF_FEATURE_TAR_NOPRESERVE_TIME(...) __VA_ARGS__
+#define IF_FEATURE_TAR_OLDGNU_COMPATIBILITY(...) __VA_ARGS__
+#define IF_FEATURE_TAR_OLDSUN_COMPATIBILITY(...)
+#define IF_FEATURE_TAR_TO_COMMAND(...)
+#define IF_FEATURE_TIMEZONE(...)
+#define IF_FEATURE_TOUCH_SUSV3(...) __VA_ARGS__
+#define IF_FEATURE_VERBOSE(...)
+#define IF_FEATURE_XARGS_SUPPORT_ARGS_FILE(...)
+#define IF_FEATURE_XARGS_SUPPORT_CONFIRMATION(...)
+#define IF_FEATURE_XARGS_SUPPORT_PARALLEL(...)
+#define IF_FEATURE_XARGS_SUPPORT_QUOTES(...)
+#define IF_FEATURE_XARGS_SUPPORT_REPL_STR(...)
+#define IF_FEATURE_XARGS_SUPPORT_TERMOPT(...)
+#define IF_FEATURE_XARGS_SUPPORT_ZERO_TERM(...)
+#define IF_FGCONSOLE(...)
+#define IF_GUNZIP(...) __VA_ARGS__
+#define IF_GZIP(...) __VA_ARGS__
+#define IF_KBD_MODE(...)
+#define IF_LOADFONT(...)
+#define IF_LOADKMAP(...)
+#define IF_LONG_OPTS(...) __VA_ARGS__
+#define IF_LS(...) __VA_ARGS__
+#define IF_LZCAT(...)
+#define IF_LZMA(...)
+#define IF_LZOP(...)
+#define IF_LZOPCAT(...)
+#define IF_NOT_ASH_OPTIMIZE_FOR_SIZE(...) __VA_ARGS__
+#define IF_NOT_DESKTOP(...)
+#define IF_NOT_FEATURE_FIND_MAXDEPTH(...) __VA_ARGS__
+#define IF_NOT_FEATURE_TAR_CREATE(...)
+#define IF_NOT_FEATURE_TOUCH_SUSV3(...)
+#define IF_OPENVT(...)
+#define IF_PRINTF(...) __VA_ARGS__
+#define IF_RESET(...)
+#define IF_RESIZE(...)
+#define IF_RPM(...)
+#define IF_RPM2CPIO(...)
+#define IF_SELINUX(...)
+#define IF_SETCONSOLE(...)
+#define IF_SETFONT(...)
+#define IF_SETKEYCODES(...)
+#define IF_SETLOGCONS(...)
+#define IF_SHELL_ASH(...) __VA_ARGS__
+#define IF_SHELL_HUSH(...)
+#define IF_SHOWKEY(...)
+#define IF_SLEEP(...)
+#define IF_TAR(...)
+#define IF_UNAME(...) __VA_ARGS__
+#define IF_UNCOMPRESS(...)
+#define IF_UNLZMA(...)
+#define IF_UNLZOP(...)
+#define IF_UNXZ(...) __VA_ARGS__
+#define IF_UNZIP(...)
+#define IF_XZ(...)
+#define IF_XZCAT(...)
+#define IF_ZCAT(...)

06/recipes/1-stage1/seed.host-executed.sh

@@ -0,0 +1,89 @@
+#!/usr/bin/env bash
+
+# 1st stage is special
+# in that we don't have any semblance of a system to start with,
+# meaning we can't even unpack sources, let alone patch them or something.
+# For stage 1, we pre-unpack sources on the host and then fix them up with
+# host's sed.
+
+#> FETCH 7a35eae33d5372a7c0da1188de798726f68825513b7ae3ebe97aaaa52114f039
+#>  FROM http://musl.libc.org/releases/musl-1.2.4.tar.gz
+
+#> FETCH f5a71d05664340ae46cda9579c6079a0f2fa809d24386d284f0d091e4d576a4e
+#>  FROM https://github.com/TinyCC/tinycc/archive/af1abf1f45d45b34f0b02437f559f4dfdba7d23c.tar.gz
+#>    AS tinycc-mob-af1abf1.tar.gz
+
+#> FETCH b8cc24c9574d809e7279c3be349795c5d5ceb6fdf19ca709f80cde50e47de314
+#>  FROM https://busybox.net/downloads/busybox-1.36.1.tar.bz2
+
+set -ueo pipefail
+TGT="$DESTDIR/tmp/1-stage1"
+
+echo "### $0: unpacking protomusl sources..."
+mkdir -p "$DESTDIR/protosrc/protomusl"
+tar --strip-components=1 -xzf downloads/musl-1.2.4.tar.gz \
+	-C "$DESTDIR/protosrc/protomusl"
+
+echo "### $0: unpacking tinycc sources..."
+mkdir -p "$DESTDIR/protosrc/tinycc"
+tar --strip-components=1 -xzf downloads/tinycc-mob-af1abf1.tar.gz \
+	-C $DESTDIR/protosrc/tinycc
+
+echo "### $0: unpacking protobusybox sources..."
+mkdir -p "$DESTDIR/protosrc/protobusybox"
+tar --strip-components=1 -xjf downloads/busybox-1.36.1.tar.bz2 \
+	-C "$DESTDIR/protosrc/protobusybox"
+
+echo "### $0: patching up protomusl stage 1 sources..."
+# original syscall_arch.h is not tcc-compatible, our syscall.h is dual-role
+cp recipes/1-stage1/syscall.h \
+	"$DESTDIR/protosrc/protomusl/arch/x86_64/syscall_arch.h"
+pushd "$DESTDIR/protosrc/protomusl/" >/dev/null
+	# eliminiate a source path reference
+	sed -i 's/__FILE__/"__FILE__"/' include/assert.h
+	# two files have to be generated with host sed
+	mkdir -p host-generated/{sed1,sed2}/bits
+	sed -f ./tools/mkalltypes.sed \
+		./arch/x86_64/bits/alltypes.h.in \
+		./include/alltypes.h.in \
+		> host-generated/sed1/bits/alltypes.h
+	sed -n -e s/__NR_/SYS_/p \
+		< arch/x86_64/bits/syscall.h.in \
+		> host-generated/sed2/bits/syscall.h
+	# more frivolous patching
+	echo '#define VERSION "1.2.2"' > src/internal/version.h
+	sed -i 's/@PLT//' src/signal/x86_64/sigsetjmp.s
+	rm -f src/signal/restore.c  # *BIG URGH*
+	rm -f src/thread/clone.c  # *BIG URGH #2*
+	rm -f src/thread/__set_thread_area.c  # possible double-define
+	rm -f src/thread/__unmapself.c  # double-define
+	rm -f src/math/sqrtl.c  # tcc-incompatible
+	rm -f src/math/{acoshl,acosl,asinhl,asinl,hypotl}.c  # sqrtl dep
+	sed -i 's|posix_spawn(&pid, "/bin/sh",|posix_spawnp(\&pid, "sh",|' \
+		src/stdio/popen.c src/process/system.c
+	sed -i 's|execl("/bin/sh", "sh", "-c",|execlp("sh", "-c",|'\
+		src/misc/wordexp.c
+popd >/dev/null
+
+echo "### $0: patching up tinycc stage 1 sources..."
+pushd "$DESTDIR/protosrc/tinycc" >/dev/null
+	:> config.h
+	# eliminate a source path reference
+	sed -i 's/__FILE__/"__FILE__"/' tcc.h
+	# don't hardcode paths
+	sed -i 's/SHN_ABS, filename);/SHN_ABS, "FILE stub");/' tccdbg.c
+	# break a circular dependency
+	sed -i 's/abort();//' lib/va_list.c
+popd >/dev/null
+
+echo "### $0: patching up protobusybox stage 1 sources..."
+pushd "$DESTDIR/protosrc/protobusybox" >/dev/null
+	:> include/NUM_APPLETS.h
+	:> include/common_bufsiz.h
+	# eliminate a source path reference
+	sed -i 's/__FILE__/"__FILE__"/' miscutils/fbsplash.c include/libbb.h
+	# already fixed in an unreleased version
+	sed -i 's/extern struct test_statics \*const test_ptr_to_statics/extern struct test_statics *BB_GLOBAL_CONST test_ptr_to_statics/' coreutils/test.c
+popd >/dev/null
+
+echo "### $0: done"

06/recipes/1-stage1/syscall.h

@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: 2021 Alexander Sosedkin <monk@unboiled.info>
+// SPDX-License-Identifier: MIT
+
+
+// constants/macro for this file to serve as a drop-in replacement
+// for musl-1.2.2's arch/x86_64/syscall_arch.h
+
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define VDSO_USEFUL
+#define VDSO_CGT_SYM "__vdso_clock_gettime"
+#define VDSO_CGT_VER "LINUX_2.6"
+#define VDSO_GETCPU_SYM "__vdso_getcpu"
+#define VDSO_GETCPU_VER "LINUX_2.6"
+
+#define IPC_64 0
+
+
+// a different, tcc-compatible implementation of syscall invocations functions
+
+static long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6);
+asm (
+	//".globl __syscall6;"
+        ".type __syscall6, @function;"
+        "__syscall6:;"
+	"movq %rdi, %rax;"
+	"movq %rsi, %rdi;"
+	"movq %rdx, %rsi;"
+	"movq %rcx, %rdx;"
+	"movq %r8, %r10;"
+	"movq %r9, %r8;"
+	"movq 8(%rsp),%r9;"
+	"syscall;"
+	"ret"
+);
+
+static __inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5) {
+	return __syscall6(n, a1, a2, a3, a4, a5, 0);
+}
+
+static __inline long __syscall4(long n, long a1, long a2, long a3, long a4) {
+	return __syscall6(n, a1, a2, a3, a4, 0, 0);
+}
+
+static __inline long __syscall3(long n, long a1, long a2, long a3) {
+	return __syscall6(n, a1, a2, a3, 0, 0, 0);
+}
+
+static __inline long __syscall2(long n, long a1, long a2) {
+	return __syscall6(n, a1, a2, 0, 0, 0, 0);
+}
+
+static __inline long __syscall1(long n, long a1) {
+	return __syscall6(n, a1, 0, 0, 0, 0, 0);
+}
+
+static __inline long __syscall0(long n) {
+	return __syscall6(n, 0, 0, 0, 0, 0, 0);
+}