82 lines
3.1 KiB
C
82 lines
3.1 KiB
C
/*
|
|
* 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
|