diff options
Diffstat (limited to 'ldso/ldso/sh64/resolve.S')
| -rw-r--r-- | ldso/ldso/sh64/resolve.S | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/ldso/ldso/sh64/resolve.S b/ldso/ldso/sh64/resolve.S new file mode 100644 index 000000000..f57b082bf --- /dev/null +++ b/ldso/ldso/sh64/resolve.S @@ -0,0 +1,95 @@ +/* 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 + |