| /* |
| * Copyright (C) 2013 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. |
| */ |
| |
| /* |
| * machine/setjmp.h: machine dependent setjmp-related information. |
| */ |
| |
| /* _JBLEN is the size of a jmp_buf in longs(64bit on AArch64) */ |
| #define _JBLEN 32 |
| |
| /* According to AARCH64 PCS document we need to save the following |
| * registers: |
| * |
| * Core x19 - x30, sp (see section 5.1.1) |
| * VFP d8 - d15 (see section 5.1.2) |
| * |
| * NOTE: All the registers saved here will have 64bit vales (except FPSR). |
| * AAPCS mandates that the higher part of q registers does not need to |
| * be saveved by the callee. |
| */ |
| |
| /* The structure of jmp_buf for AArch64: |
| * |
| * NOTE: _JBLEN is the size of jmp_buf in longs(64bit on AArch64)! The table |
| * below computes the offsets in words(32bit). |
| * |
| * word name description |
| * 0 magic magic number |
| * 1 sigmask signal mask (not used with _setjmp / _longjmp) |
| * 2 core_base base of core registers (x19-x30, sp) |
| * 28 float_base base of float registers (d8-d15) |
| * 44 reserved reserved entries (room to grow) |
| * 64 |
| * |
| * |
| * NOTE: The instructions that load/store core/vfp registers expect 8-byte |
| * alignment. Contrary to the previous setjmp header for ARM we do not |
| * need to save status/control registers for VFP (it is not a |
| * requirement for setjmp). |
| */ |
| |
| #define _JB_MAGIC 0 |
| #define _JB_SIGMASK (_JB_MAGIC+1) |
| #define _JB_CORE_BASE (_JB_SIGMASK+1) |
| #define _JB_FLOAT_BASE (_JB_CORE_BASE + (31-19+1)*2) |
| |
| #define _JB_MAGIC__SETJMP 0x53657200 |
| #define _JB_MAGIC_SETJMP 0x53657201 |
