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/* vi: set sw=8 ts=8: */
/*
* ldso/ldso/sh64/resolve.S
*
* SuperH (sh64) dynamic resolver support
*
* Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org>
*
* 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. The name of the above contributors may not be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE 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 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.
*/
.section .text..SHmedia32,"ax"
.globl _dl_linux_resolver
.globl _dl_linux_resolve
.type _dl_linux_resolve, @function
.balign 16
_dl_linux_resolve:
addi r15, -72, r15 ! make room on the stack
pt _dl_linux_resolver, tr0
st.q r15, 0, r2 ! save regs
st.q r15, 8, r3
st.q r15, 16, r4
st.q r15, 24, r5
st.q r15, 32, r6
st.q r15, 40, r7
st.q r15, 48, r8
st.q r15, 56, r9
st.q r15, 64, r18
#ifdef HAVE_FPU
addi r15, -48, r15 ! make room for FP regs
fst.d r15, 0, dr0 ! save FP regs
fst.d r15, 8, dr2
fst.d r15, 16, dr4
fst.d r15, 24, dr6
fst.d r15, 32, dr8
fst.d r15, 40, dr10
#endif
/*
* Args for _dl_linux_resolver(), set in r17/r21 by PLT code
*/
add r17, r63, r2 ! link map address
add r21, r63, r3 ! GOT offset
blink tr0, r18 ! call _dl_linux_resolver()
ptabs/l r2, tr0 ! save result = addr of function called
#ifdef HAVE_FPU
fld.d r15, 0, dr0 ! restore FP regs
fld.d r15, 8, dr2
fld.d r15, 16, dr4
fld.d r15, 24, dr6
fld.d r15, 32, dr8
fld.d r15, 40, dr10
addi r15, 48, r15
#endif
ld.q r15, 0, r2 ! restore regs
ld.q r15, 8, r3
ld.q r15, 16, r4
ld.q r15, 24, r5
ld.q r15, 32, r6
ld.q r15, 40, r7
ld.q r15, 48, r8
ld.q r15, 56, r9
ld.q r15, 64, r18
addi r15, 72, r15
blink tr0, r63 ! jump to function address
.size _dl_linux_resolve, . - _dl_linux_resolve
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