Import of the watch repository from Pebble

third_party/jerryscript/targets/curie_bsp/source/setjmp.S

@@ -0,0 +1,78 @@
+/* Copyright 2014-2016 Samsung Electronics Co., Ltd.
+ * Copyright 2016 Intel Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+.macro func _name
+.global \_name
+.type \_name, %function
+\_name:
+.endm
+.macro endfunc _name
+.size \_name, .-\_name
+.endm
+
+/**
+ * setjmp (jmp_buf env)
+ *
+ * See also:
+ *          longjmp
+ *
+ * @return 0 - if returns from direct call,
+ *         nonzero - if returns after longjmp.
+ */
+func setjmp
+  mov    %eax,(%eax);
+  mov    %ebx,0x4(%eax);
+  mov    %ecx,0x8(%eax);
+  mov    %edx,0xc(%eax);
+  mov    %esi,0x10(%eax);
+  mov    %edi,0x14(%eax);
+  mov    %ebp,0x18(%eax);
+  mov    %esp,0x1c(%eax);
+  push   %edx;
+  mov    0x4(%esp),%edx;
+  mov    %edx,0x20(%eax);
+  pop    %edx;
+  xor    %eax,%eax;
+  ret
+endfunc setjmp
+
+/**
+ * longjmp (jmp_buf env, int val)
+ *
+ * Note:
+ *      if val is not 0, then it would be returned from setjmp,
+ *      otherwise - 0 would be returned.
+ *
+ * See also:
+ *          setjmp
+ */
+func longjmp
+  test   %edx, %edx;
+  jne    . + 0x3;
+  inc    %edx;
+  mov    0x4(%eax),%ebx;
+  mov    0x8(%eax),%ecx;
+  mov    0x10(%eax),%esi;
+  mov    0x14(%eax),%edi;
+  mov    0x18(%eax),%ebp;
+  mov    0x1c(%eax),%esp;
+  push   %edx;
+  mov    0x20(%eax),%edx;
+  mov    %edx,0x4(%esp);
+  mov    0xc(%eax),%edx;
+  pop    %eax;
+  ret
+endfunc longjmp