| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * (C) 2018 Alexander Graf <agraf@suse.de> |
| */ |
| |
| #include <config.h> |
| #include <linux/linkage.h> |
| |
| #ifdef CONFIG_ARCH_RV64I |
| #define STORE_IDX(reg, idx) sd reg, (idx*8)(a0) |
| #define LOAD_IDX(reg, idx) ld reg, (idx*8)(a0) |
| #else |
| #define STORE_IDX(reg, idx) sw reg, (idx*4)(a0) |
| #define LOAD_IDX(reg, idx) lw reg, (idx*4)(a0) |
| #endif |
| |
| .pushsection .text.setjmp, "ax" |
| ENTRY(setjmp) |
| /* Preserve all callee-saved registers and the SP */ |
| STORE_IDX(s0, 0) |
| STORE_IDX(s1, 1) |
| STORE_IDX(s2, 2) |
| STORE_IDX(s3, 3) |
| STORE_IDX(s4, 4) |
| STORE_IDX(s5, 5) |
| STORE_IDX(s6, 6) |
| STORE_IDX(s7, 7) |
| STORE_IDX(s8, 8) |
| STORE_IDX(s9, 9) |
| STORE_IDX(s10, 10) |
| STORE_IDX(s11, 11) |
| STORE_IDX(ra, 12) |
| STORE_IDX(sp, 13) |
| li a0, 0 |
| ret |
| ENDPROC(setjmp) |
| .popsection |
| |
| .pushsection .text.longjmp, "ax" |
| ENTRY(longjmp) |
| LOAD_IDX(s0, 0) |
| LOAD_IDX(s1, 1) |
| LOAD_IDX(s2, 2) |
| LOAD_IDX(s3, 3) |
| LOAD_IDX(s4, 4) |
| LOAD_IDX(s5, 5) |
| LOAD_IDX(s6, 6) |
| LOAD_IDX(s7, 7) |
| LOAD_IDX(s8, 8) |
| LOAD_IDX(s9, 9) |
| LOAD_IDX(s10, 10) |
| LOAD_IDX(s11, 11) |
| LOAD_IDX(ra, 12) |
| LOAD_IDX(sp, 13) |
| |
| /* Move the return value in place, but return 1 if passed 0. */ |
| beq a1, zero, longjmp_1 |
| mv a0, a1 |
| ret |
| |
| longjmp_1: |
| li a0, 1 |
| ret |
| ENDPROC(longjmp) |
| .popsection |
