| /* |
| * Copyright (c) 2015 Wind River Systems, Inc. |
| * |
| * 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. |
| */ |
| |
| /** @file |
| * |
| * @brief Per-thread errno accessor function |
| * |
| * Allow accessing the errno for the current thread without involving the |
| * context switching. |
| */ |
| |
| #define _ASMLANGUAGE |
| |
| #include <nano_private.h> |
| #include <arch/x86/asm.h> |
| #include <offsets.h> |
| |
| GTEXT(_nanokernel) |
| GTEXT(_get_errno) |
| |
| SECTION_FUNC(TEXT, _get_errno) |
| |
| movl _nanokernel + __tNANO_current_OFFSET, %eax |
| addl $__tTCS_errno_var_OFFSET, %eax |
| ret |
