From 296178913c5dfbc2b35842fc16ed680ef51fd402 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sun, 5 Apr 2015 17:05:57 -0400
Subject: nt32: initial commit of core port files.

signed-off by Z. Gilboa; see copying.midipix (9cd0746c) for additional information.
---
 arch/nt32/src/crt_glue.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 arch/nt32/src/crt_glue.c

(limited to 'arch/nt32/src/crt_glue.c')

diff --git a/arch/nt32/src/crt_glue.c b/arch/nt32/src/crt_glue.c
new file mode 100644
index 0000000..abfd1fe
--- /dev/null
+++ b/arch/nt32/src/crt_glue.c
@@ -0,0 +1,87 @@
+#include <unistd.h>
+#include <pthread.h>
+#include "atomic.h"
+#include "syscall.h"
+#include "psxglue.h"
+#include "pthread_impl.h"
+
+extern struct __ldso_vtbl *	__ldso_vtbl;
+extern struct __psx_vtbl *	__psx_vtbl;
+
+typedef int __app_main();
+typedef int __pthread_surrogate_routine(struct pthread *);
+
+extern int _init(void);
+static int __pthread_surrogate_init(struct pthread * self);
+
+extern int __libc_start_main(
+	void *	main,
+	int	argc,
+	char **	argv);
+
+void __libc_entry_routine(
+	__app_main *		__main,
+	__psx_init_routine *	__psx_init,
+	int			options)
+{
+	int			argc;
+	char **			argv;
+	char **			envp;
+	struct __psx_context	ctx;
+
+	/* ctx init */
+	ctx.size		= sizeof(ctx);
+	ctx.options		= options;
+	ctx.pthread_create_fn	= pthread_create;
+	ctx.pthread_surrogate_fn= __pthread_surrogate_init;
+
+	/* __psx_init must succeed... */
+	if (__psx_init(&argc,&argv,&envp,&ctx))
+		a_crash();
+
+	/* ...and conform */
+	else if (envp != argv + (argc + 1))
+		a_crash();
+
+	/* dso init routines */
+	_init();
+
+	/* write once */
+	__syscall_vtbl	= (unsigned long **)ctx.sys_vtbl;
+	__ldso_vtbl	= ctx.ldso_vtbl;
+	__psx_vtbl	= ctx.psx_vtbl;
+	__teb_sys_idx	= ctx.teb_sys_idx;
+	__teb_libc_idx	= ctx.teb_libc_idx;
+
+	/* enter libc */
+	__libc_start_main(__main,argc,argv);
+
+	/* guard */
+	a_crash();
+}
+
+static int __pthread_surrogate_init(struct pthread * self)
+{
+	/**
+	 * invoked by psxscl upon creation of a surrogate libc
+	 * thread, which in turn may only call pthread_create();
+	 *
+	 * the purpose of this mecahnism is to support a scenario
+	 * where a third-party library creates a non-posix thread
+	 * which then calls, be it directly or via a callback
+	 * function, a libc api that depends on a valid
+	 * pthread_self.
+	 *
+	 * self: a pointer to an already zero'ed memory page
+	 *
+	 * struct pthread relevant members:
+	 * --------------------------------
+	 * cancel (already zero)
+	 * canary (already zero)
+	 *
+	 * pthread_create() reference:
+	 * 1a47ed15eebf96d0c8d5de4aea54108bc8cc3f53
+	**/
+
+	return 0;
+}
-- 
cgit v1.2.3