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mips.s
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1990-11-21
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3KB
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70 lines
/*
* Mostly copying garbage collector for C++.
*
*
* Copyright 1990 Digital Equipment Corporation
* All Rights Reserved
*
* Permission to use, copy, and modify this software and its documentation is
* hereby granted only under the following terms and conditions. Both the
* above copyright notice and this permission notice must appear in all copies
* of the software, derivative works or modified versions, and any portions
* thereof, and both notices must appear in supporting documentation.
*
* Users of this software agree to the terms and conditions set forth herein,
* and hereby grant back to Digital a non-exclusive, unrestricted, royalty-free
* right and license under any changes, enhancements or extensions made to the
* core functions of the software, including but not limited to those affording
* compatibility with other hardware or software environments, but excluding
* applications which incorporate this software. Users further agree to use
* their best efforts to return to Digital any such changes, enhancements or
* extensions that they make and inform Digital of noteworthy uses of this
* software. Correspondence should be provided to Digital at:
*
* Director of Licensing
* Western Research Laboratory
* Digital Equipment Corporation
* 100 Hamilton Avenue
* Palo Alto, California 94301
*
* This software may be distributed (but not offered for sale or transferred
* for compensation) to third parties, provided such third parties agree to
* abide by the terms and conditions of this notice.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* gcregisters stores the values of s0-s8 in the caller supplied buffer and
returns the current top-of-stack. The saved register set is the set of
"callee" save registers which need to be examined during garbage
collection.
*/
#include <mips/regdef.h>
.text
.align 2
.globl gcregisters
.ent gcregisters
gcregisters:
.frame sp, 0, ra
sw s0, 0(a0) /* Save s0-s8 */
sw s1, 4(a0)
sw s2, 8(a0)
sw s3, 12(a0)
sw s4, 16(a0)
sw s5, 20(a0)
sw s6, 24(a0)
sw s7, 28(a0)
sw s8, 32(a0)
or v0, sp, 0 /* Return top-of-stack address */
j ra
.end gcregisters