Initial Contributionandroid-1.0

1 files changed, 55 insertions, 0 deletions

diff --git a/libc/arch-arm/bionic/_exit_with_stack_teardown.S b/libc/arch-arm/bionic/_exit_with_stack_teardown.S
new file mode 100644
index 0000000..89f6c90
--- /dev/null
+++ b/libc/arch-arm/bionic/_exit_with_stack_teardown.S
@@ -0,0 +1,55 @@
+/*
+ * 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 <asm/unistd.h>
+
+.text
+.type _exit_with_stack_teardown, #function
+.globl _exit_with_stack_teardown
+.align 4
+
+@ void _exit_with_stack_teardown(void * stackBase, int stackSize, int retCode)
+
+_exit_with_stack_teardown:
+
+#if __ARM_EABI__
+    mov     lr, r2
+    ldr     r7, =__NR_munmap
+    swi     #0              @ the stack is destroyed by this call
+    mov     r0, lr
+    ldr     r7, =__NR_exit
+    swi     #0
+#else
+    mov     lr, r2
+    swi     # __NR_munmap   @ the stack is destroyed by this call
+    mov     r0, lr
+    swi     # __NR_exit
+#endif
+
+    @ exit() should never return, cause a crash if it does
+    mov		r0, #0
+    ldr		r0, [r0]