1*1bb92983SJerome Forissier/* SPDX-License-Identifier: BSD-3-Clause */ 20c81fcd6SJens Wiklander/* 30c81fcd6SJens Wiklander Copyright (c) 2011, 2012 ARM Ltd 40c81fcd6SJens Wiklander All rights reserved. 50c81fcd6SJens Wiklander 60c81fcd6SJens Wiklander Redistribution and use in source and binary forms, with or without 70c81fcd6SJens Wiklander modification, are permitted provided that the following conditions 80c81fcd6SJens Wiklander are met: 90c81fcd6SJens Wiklander 1. Redistributions of source code must retain the above copyright 100c81fcd6SJens Wiklander notice, this list of conditions and the following disclaimer. 110c81fcd6SJens Wiklander 2. Redistributions in binary form must reproduce the above copyright 120c81fcd6SJens Wiklander notice, this list of conditions and the following disclaimer in the 130c81fcd6SJens Wiklander documentation and/or other materials provided with the distribution. 140c81fcd6SJens Wiklander 3. The name of the company may not be used to endorse or promote 150c81fcd6SJens Wiklander products derived from this software without specific prior written 160c81fcd6SJens Wiklander permission. 170c81fcd6SJens Wiklander 180c81fcd6SJens Wiklander THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED 190c81fcd6SJens Wiklander WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 200c81fcd6SJens Wiklander MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 210c81fcd6SJens Wiklander IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 220c81fcd6SJens Wiklander SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 230c81fcd6SJens Wiklander TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 240c81fcd6SJens Wiklander PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 250c81fcd6SJens Wiklander LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 260c81fcd6SJens Wiklander NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 270c81fcd6SJens Wiklander SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 280c81fcd6SJens Wiklander */ 290c81fcd6SJens Wiklander 300c81fcd6SJens Wiklander#define GPR_LAYOUT \ 310c81fcd6SJens Wiklander REG_PAIR (x19, x20, 0); \ 320c81fcd6SJens Wiklander REG_PAIR (x21, x22, 16); \ 330c81fcd6SJens Wiklander REG_PAIR (x23, x24, 32); \ 340c81fcd6SJens Wiklander REG_PAIR (x25, x26, 48); \ 350c81fcd6SJens Wiklander REG_PAIR (x27, x28, 64); \ 360c81fcd6SJens Wiklander REG_PAIR (x29, x30, 80); \ 370c81fcd6SJens Wiklander REG_ONE (x16, 96) 380c81fcd6SJens Wiklander 390c81fcd6SJens Wiklander#define FPR_LAYOUT \ 400c81fcd6SJens Wiklander REG_PAIR ( d8, d9, 112); \ 410c81fcd6SJens Wiklander REG_PAIR (d10, d11, 128); \ 420c81fcd6SJens Wiklander REG_PAIR (d12, d13, 144); \ 430c81fcd6SJens Wiklander REG_PAIR (d14, d15, 160); 440c81fcd6SJens Wiklander 450c81fcd6SJens Wiklander// int setjmp (jmp_buf) 460c81fcd6SJens Wiklander .global setjmp 470c81fcd6SJens Wiklander .type setjmp, %function 480c81fcd6SJens Wiklandersetjmp: 490c81fcd6SJens Wiklander mov x16, sp 500c81fcd6SJens Wiklander#define REG_PAIR(REG1, REG2, OFFS) stp REG1, REG2, [x0, OFFS] 510c81fcd6SJens Wiklander#define REG_ONE(REG1, OFFS) str REG1, [x0, OFFS] 520c81fcd6SJens Wiklander GPR_LAYOUT 530c81fcd6SJens Wiklander FPR_LAYOUT 540c81fcd6SJens Wiklander#undef REG_PAIR 550c81fcd6SJens Wiklander#undef REG_ONE 560c81fcd6SJens Wiklander mov w0, #0 570c81fcd6SJens Wiklander ret 580c81fcd6SJens Wiklander .size setjmp, .-setjmp 590c81fcd6SJens Wiklander 600c81fcd6SJens Wiklander// void longjmp (jmp_buf, int) __attribute__ ((noreturn)) 610c81fcd6SJens Wiklander .global longjmp 620c81fcd6SJens Wiklander .type longjmp, %function 630c81fcd6SJens Wiklanderlongjmp: 640c81fcd6SJens Wiklander#define REG_PAIR(REG1, REG2, OFFS) ldp REG1, REG2, [x0, OFFS] 650c81fcd6SJens Wiklander#define REG_ONE(REG1, OFFS) ldr REG1, [x0, OFFS] 660c81fcd6SJens Wiklander GPR_LAYOUT 670c81fcd6SJens Wiklander FPR_LAYOUT 680c81fcd6SJens Wiklander#undef REG_PAIR 690c81fcd6SJens Wiklander#undef REG_ONE 700c81fcd6SJens Wiklander mov sp, x16 710c81fcd6SJens Wiklander cmp w1, #0 720c81fcd6SJens Wiklander cinc w0, w1, eq 730c81fcd6SJens Wiklander // use br not ret, as ret is guaranteed to mispredict 740c81fcd6SJens Wiklander br x30 750c81fcd6SJens Wiklander .size longjmp, .-longjmp 76