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