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- /* 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. */
- seqz a0, a1
- add a0, a0, a1
- ret
- ENDPROC(longjmp)
- .popsection
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