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/* vi: set sw=8 ts=8: */
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/*
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* ldso/ldso/sh64/resolve.S
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*
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* SuperH (sh64) dynamic resolver support
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*
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* Copyright (C) 2003 Paul Mundt
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the above contributors may not be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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.section .text..SHmedia32,"ax"
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.globl _dl_linux_resolver
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.globl _dl_linux_resolve
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.type _dl_linux_resolve, @function
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.balign 16
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_dl_linux_resolve:
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addi r15, -72, r15 ! make room on the stack
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pt _dl_linux_resolver, tr0
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st.q r15, 0, r2 ! save regs
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st.q r15, 8, r3
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st.q r15, 16, r4
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st.q r15, 24, r5
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st.q r15, 32, r6
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st.q r15, 40, r7
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st.q r15, 48, r8
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st.q r15, 56, r9
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st.q r15, 64, r18
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#ifdef HAVE_FPU
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addi r15, -48, r15 ! make room for FP regs
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fst.d r15, 0, dr0 ! save FP regs
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fst.d r15, 8, dr2
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fst.d r15, 16, dr4
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fst.d r15, 24, dr6
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fst.d r15, 32, dr8
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fst.d r15, 40, dr10
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#endif
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/*
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* Args for _dl_linux_resolver(), set in r17/r21 by PLT code
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*/
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add r17, r63, r2 ! link map address
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add r21, r63, r3 ! GOT offset
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blink tr0, r18 ! call _dl_linux_resolver()
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ptabs/l r2, tr0 ! save result = addr of function called
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#ifdef HAVE_FPU
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fld.d r15, 0, dr0 ! restore FP regs
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fld.d r15, 8, dr2
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fld.d r15, 16, dr4
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fld.d r15, 24, dr6
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fld.d r15, 32, dr8
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fld.d r15, 40, dr10
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addi r15, 48, r15
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#endif
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ld.q r15, 0, r2 ! restore regs
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ld.q r15, 8, r3
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ld.q r15, 16, r4
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ld.q r15, 24, r5
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ld.q r15, 32, r6
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ld.q r15, 40, r7
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ld.q r15, 48, r8
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ld.q r15, 56, r9
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ld.q r15, 64, r18
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addi r15, 72, r15
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blink tr0, r63 ! jump to function address
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.size _dl_linux_resolve, . - _dl_linux_resolve
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