diff options
Diffstat (limited to 'sys/lib/libkern/arch/ns32k/setjmp.S')
| -rw-r--r-- | sys/lib/libkern/arch/ns32k/setjmp.S | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sys/lib/libkern/arch/ns32k/setjmp.S b/sys/lib/libkern/arch/ns32k/setjmp.S new file mode 100644 index 00000000000..dfca3d55691 --- /dev/null +++ b/sys/lib/libkern/arch/ns32k/setjmp.S @@ -0,0 +1,70 @@ +/* $NetBSD: setjmp.S,v 1.3 1995/11/30 01:00:12 jtc Exp $ */ + +/* + * Copyright (c) 1992 Helsinki University of Technology + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * HELSINKI UNIVERSITY OF TECHNOLOGY ALLOWS FREE USE OF THIS SOFTWARE IN + * ITS "AS IS" CONDITION. HELSINKI UNIVERSITY OF TECHNOLOGY DISCLAIMS ANY + * LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE + * USE OF THIS SOFTWARE. + */ +/* + * HISTORY + * 29-Apr-92 Johannes Helander (jvh) at Helsinki University of Technology + * Created. + */ + +#include <machine/asm.h> +#include <machine/jmpbuf.h> + +ENTRY(setjmp) + movqd 0, tos + bsr EX(sigblock) + adjspb -4 + movd 4(sp), r2 /* jmp_buf */ + movd 0(sp), JMP_BUF_PC(r2) /* pc of caller */ + movd r0, JMP_BUF_SIGMASK(r2) /* save mask */ + + sprd sp, JMP_BUF_SP(r2) + sprd fp, JMP_BUF_FP(r2) + sprd sb, JMP_BUF_SB(r2) + movd r3, JMP_BUF_R3(r2) /* save registers r3-r7 */ + movd r4, JMP_BUF_R4(r2) + movd r5, JMP_BUF_R5(r2) + movd r6, JMP_BUF_R6(r2) + movd r7, JMP_BUF_R7(r2) + + movqd 0, r0 + ret 0 + +ENTRY(longjmp) + movd 4(sp),r2 /* jmp_buf */ + movd JMP_BUF_SIGMASK(r2), tos /* restore mask */ + bsr EX(sigsetmask) + adjspb -4 + movd 4(sp), r2 /* jmp_buf */ + movd 8(sp), r0 /* value */ + + lprd sp, JMP_BUF_SP(r2) + lprd fp, JMP_BUF_FP(r2) + lprd sb, JMP_BUF_SB(r2) + movd JMP_BUF_R3(r2), r3 /* load registers r3-r7 */ + movd JMP_BUF_R4(r2), r4 + movd JMP_BUF_R5(r2), r5 + movd JMP_BUF_R6(r2), r6 + movd JMP_BUF_R7(r2), r7 + movd JMP_BUF_PC(r2), 0(sp) /* patch return pc */ + + cmpqd 0, r0 + bne nonzero + movqd 1, r0 +nonzero: + ret 0 + |