diff options
Diffstat (limited to 'libc/arch-sh/bionic/setjmp.S')
| -rw-r--r-- | libc/arch-sh/bionic/setjmp.S | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/libc/arch-sh/bionic/setjmp.S b/libc/arch-sh/bionic/setjmp.S new file mode 100644 index 0000000..67f3397 --- /dev/null +++ b/libc/arch-sh/bionic/setjmp.S @@ -0,0 +1,167 @@ +/* $OpenBSD: setjmp.S,v 1.2 2007/03/02 06:11:54 miod Exp $ */ +/* $NetBSD: setjmp.S,v 1.10 2006/01/05 19:21:37 uwe Exp $ */ + +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from: @(#)setjmp.s 5.1 (Berkeley) 4/23/90 + */ + +#include <machine/asm.h> +#include <machine/setjmp.h> + +/* + * C library -- setjmp, longjmp + * + * longjmp(a,v) + * will generate a "return(v)" from the last call to + * setjmp(a) + * by restoring registers from the stack. + * The previous signal state is restored. + */ + +ENTRY(setjmp) + PIC_PROLOGUE(.L_got_1) + sts.l pr, @-sp + mov.l r4, @-sp + + mov.l .L_sigprocmask_1, r0 + mov r4, r6 + mov #1, r4 /* how = SIG_BLOCK */ + mov #0, r5 /* new = NULL */ +1: CALL r0 + add #4, r6 /* old = &sigmask */ + + mov.l @sp+, r4 + lds.l @sp+, pr + PIC_EPILOGUE + + /* identical to _setjmp except that the first word is non-zero */ +#if defined(__SH4__) && !defined(__SH4_NOFPU__) + add #(_JBLEN * 4), r4 + sts fpscr, r1 + xor r0, r0 + mov.l r1, @-r4 + lds r0, fpscr + sts.l fpul, @-r4 + fmov.s fr15, @-r4 + fmov.s fr14, @-r4 + fmov.s fr13, @-r4 + fmov.s fr12, @-r4 + frchg + fmov.s fr15, @-r4 + fmov.s fr14, @-r4 + fmov.s fr13, @-r4 + fmov.s fr12, @-r4 + lds r1, fpscr +#else + add #((_JBLEN - 10) * 4), r4 +#endif + sts.l mach, @-r4 + sts.l macl, @-r4 + mov.l r15, @-r4 + mov.l r14, @-r4 + mov.l r13, @-r4 + mov.l r12, @-r4 + mov.l r11, @-r4 + mov.l r10, @-r4 + mov.l r9, @-r4 + mov.l r8, @-r4 + sts.l pr, @-r4 + add #-4, r4 /* skip signal mask */ + mov #1, r0 + mov.l r0, @-r4 /* has signal mask */ + rts + xor r0, r0 + + .align 2 +.L_got_1: PIC_GOT_DATUM +.L_sigprocmask_1: CALL_DATUM(_C_LABEL(sigprocmask), 1b) + SET_ENTRY_SIZE(setjmp) + +ENTRY(longjmp) + /* we won't return here, so we don't need to save pr and r12 */ + PIC_PROLOGUE_NOSAVE(.L_got_2) + mov.l r5, @-sp + mov.l r4, @-sp + + mov.l .L_sigprocmask_2, r0 + mov r4, r5 + mov #3, r4 /* how = SIG_SETMASK */ + add #4, r5 /* new = &sigmask */ +1: CALL r0 + mov #0, r6 /* old = NULL */ + + mov.l @sp+, r4 + mov.l @sp+, r5 + + /* identical to _longjmp */ + add #8, r4 + lds.l @r4+, pr + mov.l @r4+, r8 + mov.l @r4+, r9 + mov.l @r4+, r10 + mov.l @r4+, r11 + mov.l @r4+, r12 + mov.l @r4+, r13 + mov.l @r4+, r14 + mov.l @r4+, r15 + lds.l @r4+, macl + lds.l @r4+, mach +#if defined(__SH4__) && !defined(__SH4_NOFPU__) + xor r0, r0 + lds r0, fpscr + frchg + fmov.s @r4+, fr12 + fmov.s @r4+, fr13 + fmov.s @r4+, fr14 + fmov.s @r4+, fr15 + frchg + fmov.s @r4+, fr12 + fmov.s @r4+, fr13 + fmov.s @r4+, fr14 + fmov.s @r4+, fr15 + lds.l @r4+, fpul + lds.l @r4+, fpscr +#endif + + mov r5, r0 + tst r0, r0 /* make sure return value is non-zero */ + bf .L0 + add #1, r0 +.L0: + rts + nop + + .align 2 +.L_got_2: PIC_GOT_DATUM +.L_sigprocmask_2: CALL_DATUM(_C_LABEL(sigprocmask), 1b) + SET_ENTRY_SIZE(longjmp) |