| /* |
| Copyright (c) 2011, 2012 ARM Ltd |
| All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions |
| are met: |
| 1. Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| 2. 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. |
| 3. The name of the company may not be used to endorse or promote |
| products derived from this software without specific prior written |
| permission. |
| |
| THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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. |
| */ |
| |
| #define GPR_LAYOUT \ |
| REG_PAIR (x19, x20, 0); \ |
| REG_PAIR (x21, x22, 16); \ |
| REG_PAIR (x23, x24, 32); \ |
| REG_PAIR (x25, x26, 48); \ |
| REG_PAIR (x27, x28, 64); \ |
| REG_PAIR (x29, x30, 80); \ |
| REG_ONE (x16, 96) |
| |
| #define FPR_LAYOUT \ |
| REG_PAIR ( d8, d9, 112); \ |
| REG_PAIR (d10, d11, 128); \ |
| REG_PAIR (d12, d13, 144); \ |
| REG_PAIR (d14, d15, 160); |
| |
| // int setjmp (jmp_buf) |
| .global setjmp |
| .type setjmp, %function |
| setjmp: |
| mov x16, sp |
| #define REG_PAIR(REG1, REG2, OFFS) stp REG1, REG2, [x0, OFFS] |
| #define REG_ONE(REG1, OFFS) str REG1, [x0, OFFS] |
| GPR_LAYOUT |
| FPR_LAYOUT |
| #undef REG_PAIR |
| #undef REG_ONE |
| mov w0, #0 |
| ret |
| .size setjmp, .-setjmp |
| |
| // void longjmp (jmp_buf, int) __attribute__ ((noreturn)) |
| .global longjmp |
| .type longjmp, %function |
| longjmp: |
| #define REG_PAIR(REG1, REG2, OFFS) ldp REG1, REG2, [x0, OFFS] |
| #define REG_ONE(REG1, OFFS) ldr REG1, [x0, OFFS] |
| GPR_LAYOUT |
| FPR_LAYOUT |
| #undef REG_PAIR |
| #undef REG_ONE |
| mov sp, x16 |
| cmp w1, #0 |
| cinc w0, w1, eq |
| // use br not ret, as ret is guaranteed to mispredict |
| br x30 |
| .size longjmp, .-longjmp |
