1aea083d4b
* config/pa/lib2funcs.S (__gcc_plt_call): Load branch target to %r21. Load PIC register after branch target. Fix white space. * config/pa/milli64.S ($$dyncall): Separate LINUX and non LINUX implementations. Load PIC register after branch target. Don't clobber function pointer when it points to function descriptor. Use nullification instead of branch in LINUX implementation. From-SVN: r276925
75 lines
2.3 KiB
ArmAsm
75 lines
2.3 KiB
ArmAsm
; Subroutines for calling unbound dynamic functions from within GDB for HPPA.
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; Subroutines for out of line prologues and epilogues on for the HPPA
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; Copyright (C) 1994-2019 Free Software Foundation, Inc.
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; This file is part of GCC.
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; GCC is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 3, or (at your option)
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; any later version.
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; GCC is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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; Under Section 7 of GPL version 3, you are granted additional
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; permissions described in the GCC Runtime Library Exception, version
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; 3.1, as published by the Free Software Foundation.
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; You should have received a copy of the GNU General Public License and
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; a copy of the GCC Runtime Library Exception along with this program;
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; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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; <http://www.gnu.org/licenses/>.
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#if !defined(__pro__) && !defined(__rtems__)
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.SPACE $PRIVATE$
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.SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31
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.SUBSPA $BSS$,QUAD=1,ALIGN=8,ACCESS=31,ZERO,SORT=82
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.SPACE $TEXT$
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.SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44
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.SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY
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.SUBSPA $MILLICODE$,QUAD=0,ALIGN=8,ACCESS=44,SORT=8
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#endif
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.IMPORT $$dyncall,MILLICODE
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#if !defined(__pro__) && !defined(__rtems__)
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.SPACE $TEXT$
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.SUBSPA $CODE$
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#else
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.text
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#endif
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; Simply call with the address of the desired import stub in %r22 and
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; arguments in the normal place (%r26-%r23 and stack slots).
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;
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.align 4
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.EXPORT __gcc_plt_call,ENTRY,PRIV_LEV=3,RTNVAL=GR
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__gcc_plt_call
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.PROC
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.CALLINFO
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.ENTRY
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; Our return address comes in %r31, not %r2!
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stw %r31,-8(%r30)
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; An inline version of dyncall so we don't have to worry
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; about long calls to millicode, PIC and other complexities.
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bb,>=,n %r22,30,L$foo
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depi 0,31,2,%r22
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ldw 0(%r22),%r21
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ldw 4(%r22),%r19
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L$foo
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ldsid (%r21),%r1
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mtsp %r1,%sr0
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ble 0(%sr0,%r21)
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copy %r31,%r2
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ldw -8(%r30),%r2
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; We're going to be returning to a stack address, so we
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; need to do an intra-space return.
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ldsid (%rp),%r1
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mtsp %r1,%sr0
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be,n 0(%sr0,%rp)
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.EXIT
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.PROCEND
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