| /* |
| * Copyright (C) 2010 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. |
| * Do not modify this value or you will break the ABI ! |
| * |
| * This value comes from the original OpenBSD ARM-specific header |
| * that was replaced by this one. |
| */ |
| #define _JBLEN 64 |
| |
| /* According to the ARM AAPCS document, we only need to save |
| * the following registers: |
| * |
| * Core r4-r14 |
| * |
| * VFP d8-d15 (see section 5.1.2.1) |
| * |
| * Registers s16-s31 (d8-d15, q4-q7) must be preserved across subroutine |
| * calls; registers s0-s15 (d0-d7, q0-q3) do not need to be preserved |
| * (and can be used for passing arguments or returning results in standard |
| * procedure-call variants). Registers d16-d31 (q8-q15), if present, do |
| * not need to be preserved. |
| * |
| * FPSCR saved because GLibc does saves it too. |
| * |
| */ |
| |
| /* The internal structure of a jmp_buf is totally private. |
| * Current layout (may change in the future): |
| * |
| * word name description |
| * 0 magic magic number |
| * 1 sigmask signal mask (not used with _setjmp / _longjmp) |
| * 2 float_base base of float registers (d8 to d15) |
| * 18 float_state floating-point status and control register |
| * 19 core_base base of core registers (r4 to r14) |
| * 30 reserved reserved entries (room to grow) |
| * 64 |
| * |
| * NOTE: float_base must be at an even word index, since the |
| * FP registers will be loaded/stored with instructions |
| * that expect 8-byte alignment. |
| */ |
| |
| #define _JB_MAGIC 0 |
| #define _JB_SIGMASK (_JB_MAGIC+1) |
| #define _JB_FLOAT_BASE (_JB_SIGMASK+1) |
| #define _JB_FLOAT_STATE (_JB_FLOAT_BASE + (15-8+1)*2) |
| #define _JB_CORE_BASE (_JB_FLOAT_STATE+1) |
| |
| #define _JB_MAGIC__SETJMP 0x4278f500 |
| #define _JB_MAGIC_SETJMP 0x4278f501 |
