110c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown/*
210c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * Copyright (C) 2008 The Android Open Source Project
310c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * All rights reserved.
410c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown *
510c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * Redistribution and use in source and binary forms, with or without
610c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * modification, are permitted provided that the following conditions
710c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * are met:
810c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown *  * Redistributions of source code must retain the above copyright
910c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown *    notice, this list of conditions and the following disclaimer.
1010c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown *  * Redistributions in binary form must reproduce the above copyright
1110c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown *    notice, this list of conditions and the following disclaimer in
1210c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown *    the documentation and/or other materials provided with the
1310c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown *    distribution.
1410c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown *
1510c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1610c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1710c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
1810c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
1910c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
2010c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
2110c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
2210c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
2310c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
2410c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
2510c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2610c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown * SUCH DAMAGE.
2710c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown */
285c2772f59d3b6f564897187324d8606f54423207Elliott Hughes
295c2772f59d3b6f564897187324d8606f54423207Elliott Hughes#include <linux/err.h>
305c2772f59d3b6f564897187324d8606f54423207Elliott Hughes#include <asm/unistd.h>
315c2772f59d3b6f564897187324d8606f54423207Elliott Hughes#include <machine/asm.h>
325c2772f59d3b6f564897187324d8606f54423207Elliott Hughes
3310c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown/* unlike our auto-generated syscall stubs, this code saves lr
3410c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown   on the stack, as well as a few other registers. this makes
3510c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown   our stack unwinder happy, when we generate debug stack
3610c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown   traces after the C library or other parts of the system
3710c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown   abort due to a fatal runtime error (e.g. detection
3810c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown   of a corrupted malloc heap).
3910c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown*/
4010c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown
4110c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff BrownENTRY(tgkill)
427e6ce1a3c52d8533fed92c143419fedb0c93988aBen Cheng    .save   {r4-r7, ip, lr}
4310c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown    stmfd   sp!, {r4-r7, ip, lr}
4410c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown    ldr     r7, =__NR_tgkill
4510c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown    swi     #0
4610c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff Brown    ldmfd   sp!, {r4-r7, ip, lr}
479aceab50155b17741faded1fb22e2daa51a07fb1Elliott Hughes    cmn     r0, #(MAX_ERRNO + 1)
489aceab50155b17741faded1fb22e2daa51a07fb1Elliott Hughes    bxls    lr
499aceab50155b17741faded1fb22e2daa51a07fb1Elliott Hughes    neg     r0, r0
509aceab50155b17741faded1fb22e2daa51a07fb1Elliott Hughes    b       __set_errno
5110c8ce59a40a1d8ae8f49145eca365b364aabe58Jeff BrownEND(tgkill)
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