1 files changed, 42 insertions, 0 deletions
diff --git a/src/libc/_start2.c b/src/libc/_start2.c
new file mode 100644
index 0000000..b4eb76a
--- /dev/null
+++ b/src/libc/_start2.c
@@ -0,0 +1,42 @@
+#include <_proc.h>
+#include <camellia/flags.h>
+#include <camellia/syscalls.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <elfload.h>
+
+int main(int argc, char **argv, char **envp);
+
+__attribute__((visibility("hidden")))
+extern char __executable_start[];
+
+const char *shortname(const char *path) {
+	if (!path) return "unknown program";
+	const char *slash = strrchr(path, '/');
+	if (slash) return slash + 1;
+	return path;
+}
+
+void intr_trampoline(void); /* intr.s */
+
+_Noreturn void _start2(struct execdata *ed) {
+	const char *progname;
+	elf_selfreloc();
+
+	/* done first so it isn't allocated elsewhere by accident */
+	_sys_memflag(_psdata_loc, 1, MEMFLAG_PRESENT);
+	_psdata_loc->base = __executable_start;
+	/* sets ->desc */
+	progname = shortname(ed->argv[0]);
+	setprogname(progname);
+
+	_klogf("_start2 %s %p", progname, __executable_start);
+
+	_sys_intr_set(intr_trampoline);
+	intr_set(intr_default);
+	__setinitialcwd(ed->cwd);
+
+	exit(main(ed->argc, ed->argv, ed->envp));
+}