fa432524a6
To make it easier for Native Bridge implementations to override these symbols. Bug: http://b/67993967 Test: make Change-Id: I4c53e53af494bca365dd2b3305ab0ccc2b23ba44
418 lines
15 KiB
ArmAsm
418 lines
15 KiB
ArmAsm
/*
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* Copyright (C) 2014 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 2001-2002 Opsycon AB (www.opsycon.se / www.opsycon.com)
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Opsycon AB nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*-
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* Copyright (c) 1991, 1993, 1995,
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Havard Eidnes.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)signal.h 8.1 (Berkeley) 6/10/93
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*/
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#include <private/bionic_asm.h>
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/* jmpbuf is declared to users as an array of longs, which is only
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* 4-byte aligned in 32-bit builds. The Mips jmpbuf begins with a
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* dynamically-sized 0- or 4-byte unused filler so that double-prec FP regs
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* are saved to 8-byte-aligned mem cells.
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* All the following jmpbuf offsets are from the rounded-DOWN base addr.
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*/
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/* Fields of same size on all MIPS abis: */
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/* field: byte offset: size: */
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/* dynam filler (0*4) 0-4 bytes of rounddown filler, DON'T TOUCH!!
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often overlays user storage!! */
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#define SC_FPSR_OFFSET (1*4) /* 4 bytes, floating point control/status reg */
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/* following fields are 8-byte aligned */
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#define SC_FLAG_OFFSET (2*4) /* 8 bytes, cookie and savesigs flag, first actual field */
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#define SC_MASK_OFFSET (4*4) /* 16 bytes, mips32/mips64 version of sigset_t */
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#define SC_CKSUM_OFFSET (8*4) /* 8 bytes, used for checksum */
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/* Registers that are 4-byte on mips32 o32, and 8-byte on mips64 n64 abi */
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#define SC_REGS_OFFSET (10*4) /* SC_REGS_BYTES */
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#define SC_REGS_SAVED 12 /*regs*/ /* ra,s0-s8,gp,sp */
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#define SC_REGS_BYTES (SC_REGS_SAVED*REGSZ)
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#define SC_REGS SC_REGS_OFFSET
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/* Double floating pt registers are 8-bytes on all abis,
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* but the number of saved fp regs varies for o32/n32 versus n64 abis:
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*/
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#ifdef __LP64__
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#define SC_FPREGS_SAVED 8 /* all fp regs f24,f25,f26,f27,f28,f29,f30,f31 */
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#else
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#define SC_FPREGS_SAVED 6 /* even fp regs f20,f22,f24,f26,f28,f30 */
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#endif
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#define SC_FPREGS_OFFSET (SC_REGS_OFFSET + SC_REGS_BYTES) /* SC_FPREGS_BYTES */
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#define SC_FPREGS_BYTES (SC_FPREGS_SAVED*REGSZ_FP)
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#define SC_FPREGS SC_FPREGS_OFFSET
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#define SC_TOTAL_BYTES (SC_FPREGS_OFFSET + SC_FPREGS_BYTES)
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#define SC_TOTAL_LONGS (SC_TOTAL_BYTES/REGSZ)
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#define USE_CHECKSUM 1
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.macro m_mangle_reg_and_store reg, cookie, temp, offset
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xor \temp, \reg, \cookie
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REG_S \temp, \offset
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.endm
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.macro m_unmangle_reg_and_load reg, cookie, temp, offset
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REG_L \temp, \offset
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xor \reg, \temp, \cookie
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.endm
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.macro m_calculate_checksum dst, src, scratch
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REG_L \dst, REGSZ(\src)
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#ifdef __LP64__
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/* 64 bit: checksum offset is 4 (actual _JBLEN is 25) */
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.irp i,2,3,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24
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#else
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/* 32 bit: checksum offset is 8 (actual _JBLEN is 34) */
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.irp i,2,3,4,5,6,7,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33
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#endif
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REG_L \scratch, \i*REGSZ(\src)
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xor \dst, \dst, \scratch
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.endr
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.endm
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/*
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*
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* GPOFF and FRAMESIZE must be the same for all setjmp/longjmp routines
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*
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*/
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FRAMESZ= MKFSIZ(2,6)
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A1OFF= FRAMESZ-4*REGSZ
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A0OFF= FRAMESZ-3*REGSZ
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GPOFF= FRAMESZ-2*REGSZ
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RAOFF= FRAMESZ-1*REGSZ
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NON_LEAF(sigsetjmp, FRAMESZ, $ra)
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__BIONIC_WEAK_ASM_FOR_NATIVE_BRIDGE(sigsetjmp)
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.mask 0x80000000, RAOFF
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PTR_SUBU $sp, FRAMESZ # allocate stack frame
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SETUP_GP64(GPOFF, sigsetjmp)
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SAVE_GP(GPOFF)
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.set reorder
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setjmp_common:
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#ifndef __LP64__
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li $t0, ~7
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and $a0, $t0 # round jmpbuf addr DOWN to 8-byte boundary
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#endif
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REG_S $ra, RAOFF($sp) # spill state
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REG_S $a0, A0OFF($sp)
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# get the cookie and store it along with the signal flag.
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move $a0, $a1
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jal __bionic_setjmp_cookie_get
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REG_L $a0, A0OFF($sp)
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REG_S $v0, SC_FLAG_OFFSET($a0) # save cookie and savesigs flag
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andi $t0, $v0, 1 # extract savesigs flag
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beqz $t0, 1f # do saving of signal mask?
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# call sigprocmask(int how ignored, sigset_t* null, sigset_t* SC_MASK(a0)):
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LA $a2, SC_MASK_OFFSET($a0) # gets current signal mask
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li $a0, 0 # how; ignored when new mask is null
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li $a1, 0 # null new mask
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jal sigprocmask # get current signal mask
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REG_L $a0, A0OFF($sp)
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1:
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REG_L $gp, GPOFF($sp) # restore spills
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REG_L $ra, RAOFF($sp)
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REG_L $t0, SC_FLAG_OFFSET($a0) # move cookie to temp reg
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# callee-saved long-sized regs:
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PTR_ADDU $v1, $sp, FRAMESZ # save orig sp
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# m_mangle_reg_and_store reg, cookie, temp, offset
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m_mangle_reg_and_store $ra, $t0, $t1, SC_REGS+0*REGSZ($a0)
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m_mangle_reg_and_store $s0, $t0, $t2, SC_REGS+1*REGSZ($a0)
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m_mangle_reg_and_store $s1, $t0, $t3, SC_REGS+2*REGSZ($a0)
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m_mangle_reg_and_store $s2, $t0, $t1, SC_REGS+3*REGSZ($a0)
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m_mangle_reg_and_store $s3, $t0, $t2, SC_REGS+4*REGSZ($a0)
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m_mangle_reg_and_store $s4, $t0, $t3, SC_REGS+5*REGSZ($a0)
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m_mangle_reg_and_store $s5, $t0, $t1, SC_REGS+6*REGSZ($a0)
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m_mangle_reg_and_store $s6, $t0, $t2, SC_REGS+7*REGSZ($a0)
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m_mangle_reg_and_store $s7, $t0, $t3, SC_REGS+8*REGSZ($a0)
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m_mangle_reg_and_store $s8, $t0, $t1, SC_REGS+9*REGSZ($a0)
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m_mangle_reg_and_store $gp, $t0, $t2, SC_REGS+10*REGSZ($a0)
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m_mangle_reg_and_store $v1, $t0, $t3, SC_REGS+11*REGSZ($a0)
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cfc1 $v0, $31
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#ifdef __LP64__
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# callee-saved fp regs on mips n64 ABI are $f24..$f31
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s.d $f24, SC_FPREGS+0*REGSZ_FP($a0)
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s.d $f25, SC_FPREGS+1*REGSZ_FP($a0)
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s.d $f26, SC_FPREGS+2*REGSZ_FP($a0)
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s.d $f27, SC_FPREGS+3*REGSZ_FP($a0)
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s.d $f28, SC_FPREGS+4*REGSZ_FP($a0)
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s.d $f29, SC_FPREGS+5*REGSZ_FP($a0)
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s.d $f30, SC_FPREGS+6*REGSZ_FP($a0)
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s.d $f31, SC_FPREGS+7*REGSZ_FP($a0)
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#else
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# callee-saved fp regs on mips o32 ABI are
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# the even-numbered double fp regs $f20,$f22,...$f30
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s.d $f20, SC_FPREGS+0*REGSZ_FP($a0)
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s.d $f22, SC_FPREGS+1*REGSZ_FP($a0)
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s.d $f24, SC_FPREGS+2*REGSZ_FP($a0)
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s.d $f26, SC_FPREGS+3*REGSZ_FP($a0)
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s.d $f28, SC_FPREGS+4*REGSZ_FP($a0)
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s.d $f30, SC_FPREGS+5*REGSZ_FP($a0)
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#endif
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sw $v0, SC_FPSR_OFFSET($a0)
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#if USE_CHECKSUM
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m_calculate_checksum $t0, $a0, $t1
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REG_S $t0, SC_CKSUM_OFFSET($a0)
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#endif
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move $v0, $zero
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RESTORE_GP64
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PTR_ADDU $sp, FRAMESZ
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j $ra
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END(sigsetjmp)
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# Alternate entry points:
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NON_LEAF(setjmp, FRAMESZ, $ra)
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__BIONIC_WEAK_ASM_FOR_NATIVE_BRIDGE(setjmp)
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.mask 0x80000000, RAOFF
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PTR_SUBU $sp, FRAMESZ
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SETUP_GP64(GPOFF, setjmp) # can't share sigsetjmp's gp code
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SAVE_GP(GPOFF)
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.set reorder
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li $a1, 1 # save/restore signals state
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b setjmp_common # tail call
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END(setjmp)
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NON_LEAF(_setjmp, FRAMESZ, $ra)
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__BIONIC_WEAK_ASM_FOR_NATIVE_BRIDGE(_setjmp)
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.mask 0x80000000, RAOFF
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PTR_SUBU $sp, FRAMESZ
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SETUP_GP64(GPOFF, _setjmp) # can't share sigsetjmp's gp code
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SAVE_GP(GPOFF)
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.set reorder
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li $a1, 0 # don't save/restore signals
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b setjmp_common # tail call
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END(_setjmp)
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NON_LEAF(siglongjmp, FRAMESZ, $ra)
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__BIONIC_WEAK_ASM_FOR_NATIVE_BRIDGE(siglongjmp)
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.mask 0x80000000, RAOFF
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PTR_SUBU $sp, FRAMESZ
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SETUP_GP64(GPOFF, siglongjmp)
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SAVE_GP(GPOFF)
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.set reorder
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#ifndef __LP64__
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li $t0, ~7
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and $a0, $t0 # round jmpbuf addr DOWN to 8-byte boundary
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#endif
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move $s1, $a1 # temp spill
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move $s0, $a0
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#if USE_CHECKSUM
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m_calculate_checksum $t0, $s0, $s2
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REG_L $s2, SC_CKSUM_OFFSET($s0)
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beq $t0, $s2, 0f
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nop
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jal __bionic_setjmp_checksum_mismatch
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nop
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0:
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#endif
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# extract savesigs flag
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REG_L $s2, SC_FLAG_OFFSET($s0)
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andi $t0, $s2, 1
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beqz $t0, 1f # restore signal mask?
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# call sigprocmask(int how SIG_SETMASK, sigset_t* SC_MASK(a0), sigset_t* null):
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LA $a1, SC_MASK_OFFSET($s0) # signals being restored
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li $a0, 3 # mips SIG_SETMASK
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li $a2, 0 # null
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jal sigprocmask # restore signal mask
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1:
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move $t0, $s2 # get cookie to temp reg
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move $a1, $s1
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move $a0, $s0
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# callee-saved long-sized regs:
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# m_unmangle_reg_and_load reg, cookie, temp, offset
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# don't restore gp yet, old value is needed for cookie_check call
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m_unmangle_reg_and_load $ra, $t0, $t1, SC_REGS+0*REGSZ($a0)
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m_unmangle_reg_and_load $s0, $t0, $t2, SC_REGS+1*REGSZ($a0)
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m_unmangle_reg_and_load $s1, $t0, $t3, SC_REGS+2*REGSZ($a0)
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m_unmangle_reg_and_load $s2, $t0, $t1, SC_REGS+3*REGSZ($a0)
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m_unmangle_reg_and_load $s3, $t0, $t2, SC_REGS+4*REGSZ($a0)
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m_unmangle_reg_and_load $s4, $t0, $t3, SC_REGS+5*REGSZ($a0)
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m_unmangle_reg_and_load $s5, $t0, $t1, SC_REGS+6*REGSZ($a0)
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m_unmangle_reg_and_load $s6, $t0, $t2, SC_REGS+7*REGSZ($a0)
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m_unmangle_reg_and_load $s7, $t0, $t3, SC_REGS+8*REGSZ($a0)
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m_unmangle_reg_and_load $s8, $t0, $t1, SC_REGS+9*REGSZ($a0)
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m_unmangle_reg_and_load $v1, $t0, $t2, SC_REGS+10*REGSZ($a0)
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m_unmangle_reg_and_load $sp, $t0, $t3, SC_REGS+11*REGSZ($a0)
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lw $v0, SC_FPSR_OFFSET($a0)
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ctc1 $v0, $31 # restore old fr mode before fp values
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#ifdef __LP64__
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# callee-saved fp regs on mips n64 ABI are $f24..$f31
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l.d $f24, SC_FPREGS+0*REGSZ_FP($a0)
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l.d $f25, SC_FPREGS+1*REGSZ_FP($a0)
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l.d $f26, SC_FPREGS+2*REGSZ_FP($a0)
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l.d $f27, SC_FPREGS+3*REGSZ_FP($a0)
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l.d $f28, SC_FPREGS+4*REGSZ_FP($a0)
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l.d $f29, SC_FPREGS+5*REGSZ_FP($a0)
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l.d $f30, SC_FPREGS+6*REGSZ_FP($a0)
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l.d $f31, SC_FPREGS+7*REGSZ_FP($a0)
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#else
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# callee-saved fp regs on mips o32 ABI are
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# the even-numbered double fp regs $f20,$f22,...$f30
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l.d $f20, SC_FPREGS+0*REGSZ_FP($a0)
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l.d $f22, SC_FPREGS+1*REGSZ_FP($a0)
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l.d $f24, SC_FPREGS+2*REGSZ_FP($a0)
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l.d $f26, SC_FPREGS+3*REGSZ_FP($a0)
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l.d $f28, SC_FPREGS+4*REGSZ_FP($a0)
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l.d $f30, SC_FPREGS+5*REGSZ_FP($a0)
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#endif
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# check cookie
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PTR_SUBU $sp, FRAMESZ
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REG_S $v1, GPOFF($sp)
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REG_S $ra, RAOFF($sp)
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REG_S $a1, A1OFF($sp)
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move $a0, $t0
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jal __bionic_setjmp_cookie_check
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REG_L $gp, GPOFF($sp)
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REG_L $ra, RAOFF($sp)
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REG_L $a1, A1OFF($sp)
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PTR_ADDU $sp, FRAMESZ
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sltiu $t0, $a1, 1 # never return 0!
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xor $v0, $a1, $t0
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j $ra # return to setjmp call site
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END(siglongjmp)
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ALIAS_SYMBOL(longjmp, siglongjmp)
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__BIONIC_WEAK_ASM_FOR_NATIVE_BRIDGE(longjmp)
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ALIAS_SYMBOL(_longjmp, siglongjmp)
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__BIONIC_WEAK_ASM_FOR_NATIVE_BRIDGE(_longjmp)
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