From 2f2b1c17cb9e6db0cacca52765f8bf701798ef18 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Mon, 7 Jan 2019 07:51:27 -0500
Subject: mmglue: moved arch/nt{32|64}/src --> src/arch/nt{32|64}.

---
 src/arch/nt32/crt_glue.c | 124 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 src/arch/nt32/crt_glue.c

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

diff --git a/src/arch/nt32/crt_glue.c b/src/arch/nt32/crt_glue.c
new file mode 100644
index 0000000..c5af4b0
--- /dev/null
+++ b/src/arch/nt32/crt_glue.c
@@ -0,0 +1,124 @@
+#include <unistd.h>
+#include <stdint.h>
+#include <pthread.h>
+#include "atomic.h"
+#include "syscall.h"
+#include "psxglue.h"
+#include "pthread_impl.h"
+
+extern const struct __ldso_vtbl * __ldso_vtbl;
+extern const struct __psx_vtbl *  __psx_vtbl;
+
+typedef int __app_main();
+typedef int __pthread_surrogate_routine(struct pthread *);
+
+static int __pthread_surrogate_init(struct pthread * self);
+
+extern int __libc_start_main(
+	void *	main,
+	int	argc,
+	char **	argv);
+
+static void (*__global_ctors_fn)();
+static void (*__global_dtors_fn)();
+
+void _init()
+{
+	__global_ctors_fn();
+}
+
+void _fini()
+{
+	__global_dtors_fn();
+}
+
+struct __tls {
+	void *		pad[16/sizeof(void *)];
+	struct pthread	pt;
+} __builtin_tls = {{0}};
+
+void __init_tls (size_t * auxv)
+{
+	#define T __builtin_tls
+
+	__set_thread_area(&T.pt);
+
+	T.pt.self	= &T.pt;
+	T.pt.locale	= &libc.global_locale;
+	T.pt.tid	= __syscall(SYS_set_tid_address, &T.pt.tid);
+
+	libc.can_do_threads = 1;
+	libc.tls_size = sizeof(struct __tls);
+};
+
+void __libc_entry_routine(
+	__app_main *		__main,
+	__psx_init_routine *	__psx_init,
+	const unsigned short *	__ctty,
+	int			options)
+{
+	int			argc;
+	char **			argv;
+	char **			envp;
+	struct __psx_context	ctx;
+
+	/* ctx init */
+	ctx.size		= sizeof(ctx);
+	ctx.options		= options;
+	ctx.refaddr		= __main;
+	ctx.libcaddr		= _init;
+	ctx.ctty		= __ctty;
+	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();
+
+	/* 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;
+
+	/* surrogate init/fini arrays */
+	__global_ctors_fn = __psx_vtbl->do_global_ctors_fn;
+	__global_dtors_fn = __psx_vtbl->do_global_dtors_fn;
+
+	/* enter libc */
+	__psx_vtbl->start_main(__main,argc,argv,__libc_start_main);
+
+	/* 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;
+}
-- 
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