Add syslinux 6.03

For now just use the pre-compiled binaries, but build our own static
extlinux.

9 files changed, 132 insertions, 0 deletions

diff --git a/pkg/gen.rc b/pkg/gen.rc
index 44176aee..e43d1e88 100644
--- a/pkg/gen.rc
+++ b/pkg/gen.rc
@@ -70,6 +70,7 @@ subgen sshfs
 subgen st
 subgen strace
 subgen swc
+subgen syslinux
 subgen terminus-font
 subgen the_silver_searcher
 subgen transmission
diff --git a/pkg/syslinux/.gitignore b/pkg/syslinux/.gitignore
new file mode 100644
index 00000000..3df33818
--- /dev/null
+++ b/pkg/syslinux/.gitignore
@@ -0,0 +1,3 @@
+/src
+/syslinux-6.03.tar.xz
+/tools.ninja
diff --git a/pkg/syslinux/bin2c.c b/pkg/syslinux/bin2c.c
new file mode 100644
index 00000000..7dd6f1ec
--- /dev/null
+++ b/pkg/syslinux/bin2c.c
@@ -0,0 +1,64 @@
+#include <err.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+void
+usage(void)
+{
+	errx(2, "usage: bin2c tablename [align]");
+}
+
+int
+main(int argc, char *argv[])
+{
+	int fd;
+	char buf[4096], *s, *table_name;
+	ssize_t n;
+	size_t total = 0, pad, align = 0;
+	struct stat st;
+
+	switch (argc) {
+	case 3:
+		align = strtoul(argv[2], &s, 10);
+		if (*s)
+			usage();
+	case 2:
+		table_name = argv[1];
+		break;
+	default:
+		usage();
+	}
+
+	if (fstat(0, &st) < 0)
+		err(1, "fstat 0");
+
+	printf("unsigned char %s[] = {", table_name);
+
+	for (;;) {
+		n = read(0, buf, sizeof(buf));
+		if (n < 0)
+			err(1, "read");
+		if (n == 0)
+			break;
+		for (s = buf; s < buf + n; ++s) {
+			if (total++ % 8 == 0)
+				printf("\n\t");
+			printf("0x%02hhx,", *s);
+		}
+	}
+	if (align) {
+		for (pad = (total + (align - 1)) / align * align - total; pad; --pad) {
+			if (total++ % 8 == 0)
+				printf("\n\t");
+			printf("0x00,");
+		}
+	}
+
+	printf("\n};\n\nconst unsigned int %s_len = %zu;\n", table_name, total);
+	printf("\nconst int %s_mtime = %d;\n", table_name, st.st_mtime);
+
+	return 0;
+}
diff --git a/pkg/syslinux/gen.rc b/pkg/syslinux/gen.rc
new file mode 100644
index 00000000..becad305
--- /dev/null
+++ b/pkg/syslinux/gen.rc
@@ -0,0 +1,45 @@
+cflags\
+	-I '$dir' \
+	-I '$outdir' \
+	-I '$srcdir'/libinstaller\
+	-I '$srcdir'/com32/include/libinstaller
+# NOTE: we should only have to include $srcdir/libinstaller, but BSD pax/tar
+# transforms symlink targets as well as filenames, trashing the
+# libinstaller/advconst.h symlink.
+
+build '$outdir'/version.h awk '$srcdir'/version '|' '$dir'/version.awk ; with\
+	expr '-f $dir/version.awk -v fmt=''#define %s %s'''
+
+{
+	toolchain host
+	set srcdir '$dir'
+	exe bin2c bin2c.c
+} >tools.ninja ; subninja tools.ninja
+
+rule bin2c '$outdir/bin2c $args <$in >$out.tmp && mv $out.tmp $out'
+fn bin2c {
+	bin=$1
+	name=$2
+	shift
+	build '$outdir'/$name.c bin2c '$srcdir'/$bin '|' '$outdir'/bin2c
+	with args $"*
+}
+
+bin2c bios/core/ldlinux.bss syslinux_bootsect
+bin2c bios/core/ldlinux.sys syslinux_ldlinux 512
+bin2c bios/com32/elflink/ldlinux/ldlinux.c32 syslinux_ldlinuxc32
+
+exe bin/extlinux -d '$outdir'/version.h\
+	extlinux/^(main.c mountinfo.c)\
+	libinstaller/^(\
+		syslxmod.c\
+		syslxopt.c\
+		syslxcom.c\
+		setadv.c\
+		advio.c\
+	)\
+	'$outdir'/syslinux_^(bootsect ldlinux ldlinuxc32)^.c
+
+file lib/syslinux/bios/mbr.bin '$srcdir'/bios/mbr/mbr.bin 644
+
+fetch curl
diff --git a/pkg/syslinux/rev b/pkg/syslinux/rev
new file mode 100644
index 00000000..d00491fd
--- /dev/null
+++ b/pkg/syslinux/rev
@@ -0,0 +1 @@
+1
diff --git a/pkg/syslinux/sha256 b/pkg/syslinux/sha256
new file mode 100644
index 00000000..56d3c185
--- /dev/null
+++ b/pkg/syslinux/sha256
@@ -0,0 +1 @@
+26d3986d2bea109d5dc0e4f8c4822a459276cf021125e8c9f23c3cca5d8c850e  syslinux-6.03.tar.xz
diff --git a/pkg/syslinux/url b/pkg/syslinux/url
new file mode 100644
index 00000000..d45d7971
--- /dev/null
+++ b/pkg/syslinux/url
@@ -0,0 +1 @@
+url = "https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-6.03.tar.xz"
diff --git a/pkg/syslinux/uuid/uuid.h b/pkg/syslinux/uuid/uuid.h
new file mode 100644
index 00000000..ee9c753a
--- /dev/null
+++ b/pkg/syslinux/uuid/uuid.h
@@ -0,0 +1 @@
+typedef unsigned char uuid_t[16];
diff --git a/pkg/syslinux/version.awk b/pkg/syslinux/version.awk
new file mode 100644
index 00000000..007470aa
--- /dev/null
+++ b/pkg/syslinux/version.awk
@@ -0,0 +1,15 @@
+function def(var, val) {
+	printf fmt "\n", var, val
+}
+
+{
+	def("VERSION", $1)
+	def("VERSION_STR", "\"" $1 "\"")
+
+	i = index($1, ".")
+	def("VERSION_MAJOR", int(substr($1, 1, i - 1)))
+	def("VERSION_MINOR", int(substr($1, i + 1)))
+
+	def("YEAR", $2)
+	def("YEAR_STR", "\"" $2 "\"")
+}