| Philipp Tomsich | e5a246f | 2017-10-10 16:21:13 +0200 | [diff] [blame] | 1 | /* |
| 2 | * (C) 2017 Theobroma Systems Design und Consulting GmbH |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #include <config.h> |
| 8 | #include <asm/macro.h> |
| 9 | #include <linux/linkage.h> |
| 10 | |
| 11 | .pushsection .text.setjmp, "ax" |
| 12 | ENTRY(setjmp) |
| 13 | /* Preserve all callee-saved registers and the SP */ |
| 14 | stp x19, x20, [x0,#0] |
| 15 | stp x21, x22, [x0,#16] |
| 16 | stp x23, x24, [x0,#32] |
| 17 | stp x25, x26, [x0,#48] |
| 18 | stp x27, x28, [x0,#64] |
| 19 | stp x29, x30, [x0,#80] |
| 20 | mov x2, sp |
| 21 | str x2, [x0, #96] |
| 22 | mov x0, #0 |
| 23 | ret |
| 24 | ENDPROC(setjmp) |
| 25 | .popsection |
| 26 | |
| 27 | .pushsection .text.longjmp, "ax" |
| 28 | ENTRY(longjmp) |
| 29 | ldp x19, x20, [x0,#0] |
| 30 | ldp x21, x22, [x0,#16] |
| 31 | ldp x23, x24, [x0,#32] |
| 32 | ldp x25, x26, [x0,#48] |
| 33 | ldp x27, x28, [x0,#64] |
| 34 | ldp x29, x30, [x0,#80] |
| 35 | ldr x2, [x0,#96] |
| 36 | mov sp, x2 |
| 37 | /* Move the return value in place, but return 1 if passed 0. */ |
| 38 | adds x0, xzr, x1 |
| 39 | csinc x0, x0, xzr, ne |
| 40 | ret |
| 41 | ENDPROC(longjmp) |
| 42 | .popsection |