diff options
Diffstat (limited to 'libc/sysdeps/linux/kvx/setjmp.S')
| -rw-r--r-- | libc/sysdeps/linux/kvx/setjmp.S | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/kvx/setjmp.S b/libc/sysdeps/linux/kvx/setjmp.S new file mode 100644 index 000000000..1a8fce3fd --- /dev/null +++ b/libc/sysdeps/linux/kvx/setjmp.S @@ -0,0 +1,59 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2018 Kalray Inc. + */ + +#include <sysdep.h> + +#define _SETJMP_H +#define _ASM +#include <bits/setjmp.h> +#include <libc-symbols.h> + +/** + * Simply save the user context to $r0 (jmpbuf) + * + * This function has the following prototype: + * int __sigsetjmp (r0 = jmp_buf env, r1 = int savemask) + * At the end, we call sigjmp_save + * int __sigjmp_save (sigjmp_buf env, int savemask) + * which will save signal mask if needed (set by setjmp/_setjmp) + * + * NOTE: since r0 and r1 are used by __sigjmp_save, we must not + * clobber them during this function + */ +ENTRY(__sigsetjmp) + /* Save r20r21r22r23 */ + so (JMPBUF_REGS_OFFSET + QUAD_REG_SIZE)[$r0] = $r20r21r22r23 + get $r40 = $ra + ;; + /* Save r24r25r26r27 */ + so (JMPBUF_REGS_OFFSET + 2 * QUAD_REG_SIZE) [$r0] = $r24r25r26r27 + get $r41 = $cs + ;; + copyd $r36 = $sp + copyd $r37 = $r14 + copyd $r38 = $r18 + copyd $r39 = $r19 + ;; + /* Save r12(sp) r14 r18 r19 stored in $r36r37r38r39 */ + so (JMPBUF_REGS_OFFSET)[$r0] = $r36r37r38r39 + get $r32 = $lc + ;; + /* Save r28r29r30r31 */ + so (JMPBUF_REGS_OFFSET + 3 * QUAD_REG_SIZE) [$r0] = $r28r29r30r31 + get $r33 = $le + ;; + /* Save $cs and $ra */ + sq JMPBUF_RA_CS_OFFSET[$r0] = $r40r41 + get $r34 = $ls + ;; + /* Save $lc, $le and $ls */ + so JMPBUF_LC_LE_LS_OFFSET[$r0] = $r32r33r34r35 + goto __sigjmp_save + ;; +END(__sigsetjmp) +libc_hidden_def(__sigsetjmp) |