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/*
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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>
__FBSDID("$FreeBSD$");
.text
/*
* Important registers:
* r8 structure return address
* r15 static link (nested routines)
* rp our return address
* in0 caller's ar.pfs
* in1 caller's gp
* in2 caller's rp
* in3 GOT entry
* ar.pfs our pfs
*/
ENTRY_NOPROFILE(_mcount, 4)
alloc loc0 = ar.pfs, 4, 4, 2, 0
mov loc1 = r8
mov loc2 = rp
mov loc3 = r15
;;
mov out0 = in2
mov out1 = rp
br.call.sptk rp = __mcount
;;
1:
mov gp = in1
mov r14 = ip
mov b7 = loc2
;;
add r14 = 2f - 1b, r14
mov ar.pfs = loc0
mov rp = in2
;;
mov r15 = loc3
mov b7 = r14
mov b6 = loc2
mov r8 = loc1
mov r14 = in0
br.ret.sptk b7
;;
2:
mov ar.pfs = r14
br.sptk b6
;;
END(_mcount)
WEAK_ALIAS(mcount, _mcount)
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