1 files changed, 122 insertions, 0 deletions
diff --git a/libc/bionic/libc_init_common.c b/libc/bionic/libc_init_common.c
new file mode 100644
index 0000000..0944cb0
--- /dev/null
+++ b/libc/bionic/libc_init_common.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <elf.h>
+#include <asm/page.h>
+#include "pthread_internal.h"
+#include "atexit.h"
+#include "libc_init_common.h"
+
+#include <sys/tls.h>
+#include <errno.h>
+
+extern void _init(void);
+extern void _fini(void);
+
+static void call_array(void(**list)())
+{
+    // First element is -1, list is null-terminated
+    while (*++list) {
+        (*list)();
+    }
+}
+
+static void __bionic_do_global_dtors(structors_array_t const * const p)
+{
+    call_array(p->fini_array);
+    //_fini();
+}
+
+extern unsigned __get_sp(void);
+extern pid_t    gettid(void);
+
+char*  __progname;
+char **environ;
+
+/* from asm/page.h */
+unsigned int __page_size = PAGE_SIZE;
+unsigned int __page_shift = PAGE_SHIFT;
+
+
+int __system_properties_init(void);
+
+void __libc_init_common(uintptr_t *elfdata,
+                       void (*onexit)(void),
+                       int (*slingshot)(int, char**, char**),
+                       structors_array_t const * const structors,
+                       void (*pre_ctor_hook)())
+{
+    pthread_internal_t thread;
+    pthread_attr_t thread_attr;
+    void *tls_area[BIONIC_TLS_SLOTS];
+    int argc;
+    char **argv, **envp, **envend;
+    struct auxentry *auxentry;
+    unsigned int page_size = 0, page_shift = 0;
+
+    /* The main thread's stack has empirically shown to be 84k */
+    unsigned stacktop = (__get_sp() & ~(PAGE_SIZE - 1)) + PAGE_SIZE;
+    unsigned stacksize = 128 * 1024; //84 * 1024;
+    unsigned stackbottom = stacktop - stacksize;
+
+    pthread_attr_init(&thread_attr);
+    pthread_attr_setstack(&thread_attr, (void*)stackbottom, stacksize);
+    _init_thread(&thread, gettid(), &thread_attr, (void*)stackbottom);
+    __init_tls(tls_area, &thread);
+
+    argc = (int) *elfdata++;
+    argv = (char**) elfdata;
+    envp = argv+(argc+1);
+    environ = envp;
+
+    __progname = argv[0] ? argv[0] : "<unknown>";
+
+    errno = 0;
+
+    __system_properties_init();
+
+    if (pre_ctor_hook) pre_ctor_hook();
+
+    // XXX: we should execute the .fini_array upon exit
+
+    // pre-init array.
+    // XXX: I'm not sure what's the different with the init array.
+    call_array(structors->preinit_array);
+
+    // for compatibility with non-eabi binary, call the .ctors section
+    call_array(structors->ctors_array);
+
+    // call static constructors
+    call_array(structors->init_array);
+
+    exit(slingshot(argc, argv, envp));
+}