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NetBSD/lib/libc/arch/sh5/gen/_setjmp.S

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NetBSD, meet the SH-5 cpu. SH-5, meet NetBSD. Let's hope this is the start of a long and fruitful relationship. :-) This code, funded by Wasabi Systems, adds initial support for the Hitachi SuperH(tm) SH-5 cpu architecture to NetBSD. At the present time, NetBSD/evbsh5 only runs on a SH-5 core simulator which has no simulated devices other than a simple console. However, it is good enough to get to the "root device: " prompt. Device driver support for Real SH-5 Hardware is in place, particularly for supporting the up-coming Cayman evaluation board, and should be quite easy to get running when the hardware is available. There is no in-tree toolchain for this port at this time. Gcc-current has rudimentary SH-5 support but it is known to be buggy. A working toolchain was obtained from SuperH to facilitate this port. Gcc-current will be fixed in due course. The SH-5 architecture is fully 64-bit capable, although NetBSD/evbsh5 has currently only been tested in 32-bit mode. It is bi-endian, via a boot- time option and it also has an "SHcompact" mode in which it will execute SH-[34] user-land instructions. For more information on the SH-5, see www.superh.com. Suffice to say it is *not* just another respin of the SH-[34].
2002-07-05 17:31:28 +04:00
/* $NetBSD: _setjmp.S,v 1.1 2002/07/05 13:31:30 scw Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Steve C. Woodford for Wasabi Systems, Inc.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
#include <machine/asm.h>
#define _O(n) ((n)*8)
/*
* 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 NOT restored.
*/
ENTRY_NOPROFILE(_setjmp)
st.q r2, _O(_JB_R10), r10
st.q r2, _O(_JB_R11), r11
st.q r2, _O(_JB_R12), r12
st.q r2, _O(_JB_R13), r13
st.q r2, _O(_JB_R14), r14
st.q r2, _O(_JB_R26), r26
st.q r2, _O(_JB_R27), r27
st.q r2, _O(_JB_R28), r28
st.q r2, _O(_JB_R29), r29
st.q r2, _O(_JB_R30), r30
st.q r2, _O(_JB_R31), r31
st.q r2, _O(_JB_R32), r32
st.q r2, _O(_JB_R33), r33
st.q r2, _O(_JB_R34), r34
st.q r2, _O(_JB_R35), r35
st.q r2, _O(_JB_R44), r44
st.q r2, _O(_JB_R45), r45
st.q r2, _O(_JB_R46), r46
st.q r2, _O(_JB_R47), r47
st.q r2, _O(_JB_R48), r48
st.q r2, _O(_JB_R49), r49
st.q r2, _O(_JB_R50), r50
st.q r2, _O(_JB_R51), r51
st.q r2, _O(_JB_R52), r52
st.q r2, _O(_JB_R53), r53
st.q r2, _O(_JB_R54), r54
st.q r2, _O(_JB_R55), r55
st.q r2, _O(_JB_R56), r56
st.q r2, _O(_JB_R57), r57
st.q r2, _O(_JB_R58), r58
st.q r2, _O(_JB_R59), r59
ptabs/l r18, tr0
gettr tr5, r0
st.q r2, _O(_JB_TR5), r0
gettr tr6, r0
st.q r2, _O(_JB_TR6), r0
gettr tr7, r0
st.q r2, _O(_JB_TR7), r0
st.q r2, _O(_JB_SP), r15
st.q r2, _O(_JB_PC), r18
movi 0, r2
blink tr0, r63
ENTRY_NOPROFILE(_longjmp)
ld.q r2, _O(_JB_R10), r10
ld.q r2, _O(_JB_R11), r11
ld.q r2, _O(_JB_R12), r12
ld.q r2, _O(_JB_R13), r13
ld.q r2, _O(_JB_R14), r14
ld.q r2, _O(_JB_R26), r26
ld.q r2, _O(_JB_R27), r27
ld.q r2, _O(_JB_R28), r28
ld.q r2, _O(_JB_R29), r29
ld.q r2, _O(_JB_R30), r30
ld.q r2, _O(_JB_R31), r31
ld.q r2, _O(_JB_R32), r32
ld.q r2, _O(_JB_R33), r33
ld.q r2, _O(_JB_R34), r34
ld.q r2, _O(_JB_R35), r35
ld.q r2, _O(_JB_R40), r44
ld.q r2, _O(_JB_R45), r45
ld.q r2, _O(_JB_R46), r46
ld.q r2, _O(_JB_R47), r47
ld.q r2, _O(_JB_R48), r48
ld.q r2, _O(_JB_R49), r49
ld.q r2, _O(_JB_R50), r50
ld.q r2, _O(_JB_R51), r51
ld.q r2, _O(_JB_R52), r52
ld.q r2, _O(_JB_R53), r53
ld.q r2, _O(_JB_R54), r54
ld.q r2, _O(_JB_R55), r55
ld.q r2, _O(_JB_R56), r56
ld.q r2, _O(_JB_R57), r57
ld.q r2, _O(_JB_R58), r58
ld.q r2, _O(_JB_R59), r59
ld.q r2, _O(_JB_TR5), r0
ptabs/u r0, tr5
ld.q r2, _O(_JB_TR6), r0
ptabs/u r0, tr6
ld.q r2, _O(_JB_TR7), r0
ptabs/u r0, tr7
ld.q r2, _O(_JB_PC), r18
ptabs/l r18, tr0
ld.q r2, _O(_JB_SP), r15
movi 1, r2
cmvne r3, r3, r2
blink tr0, r63
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