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6e4a35ced9
On 32-bit ppc, the GOT pointer must be loaded manually. This adds a "get_got" assembler macro to compute the GOT address. The "movrel" macro is updated to take an additional parameter containing the GOT address since no register is reserved for this purpose on ppc32. These changes have no effect on ppc64 builds. Signed-off-by: Mans Rullgard <mans@mansr.com>
134 lines
2.4 KiB
ArmAsm
134 lines
2.4 KiB
ArmAsm
/*
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* Copyright (c) 2009 Loren Merritt
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#define GLUE(a, b) a ## b
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#define JOIN(a, b) GLUE(a, b)
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#define X(s) JOIN(EXTERN_ASM, s)
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#if ARCH_PPC64
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#define PTR .quad
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#define lp ld
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#define lpx ldx
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#define stp std
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#define stpu stdu
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#define PS 8
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#define L(s) JOIN(., s)
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.macro extfunc name
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.global X(\name)
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.section .opd, "aw"
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X(\name):
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.quad L(\name), .TOC.@tocbase, 0
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.previous
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.type X(\name), STT_FUNC
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L(\name):
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.endm
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.macro movrel rd, sym, gp
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ld \rd, \sym@got(r2)
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.endm
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.macro get_got rd
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.endm
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#else /* ARCH_PPC64 */
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#define PTR .int
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#define lp lwz
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#define lpx lwzx
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#define stp stw
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#define stpu stwu
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#define PS 4
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#define L(s) s
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.macro extfunc name
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.global X(\name)
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.type X(\name), STT_FUNC
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X(\name):
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\name:
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.endm
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.macro movrel rd, sym, gp
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#if CONFIG_PIC
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lwz \rd, \sym@got(\gp)
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#else
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lis \rd, \sym@ha
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la \rd, \sym@l(\rd)
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#endif
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.endm
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.macro get_got rd
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#if CONFIG_PIC
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bcl 20, 31, .Lgot\@
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.Lgot\@:
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mflr \rd
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addis \rd, \rd, _GLOBAL_OFFSET_TABLE_ - .Lgot\@@ha
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addi \rd, \rd, _GLOBAL_OFFSET_TABLE_ - .Lgot\@@l
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#endif
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.endm
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#endif /* ARCH_PPC64 */
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#if HAVE_IBM_ASM
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.macro DEFINE_REG n
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.equiv r\n, \n
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.equiv f\n, \n
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.equiv v\n, \n
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.endm
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DEFINE_REG 0
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DEFINE_REG 1
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DEFINE_REG 2
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DEFINE_REG 3
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DEFINE_REG 4
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DEFINE_REG 5
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DEFINE_REG 6
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DEFINE_REG 7
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DEFINE_REG 8
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DEFINE_REG 9
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DEFINE_REG 10
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DEFINE_REG 11
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DEFINE_REG 12
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DEFINE_REG 13
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DEFINE_REG 14
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DEFINE_REG 15
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DEFINE_REG 16
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DEFINE_REG 17
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DEFINE_REG 18
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DEFINE_REG 19
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DEFINE_REG 20
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DEFINE_REG 21
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DEFINE_REG 22
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DEFINE_REG 23
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DEFINE_REG 24
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DEFINE_REG 25
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DEFINE_REG 26
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DEFINE_REG 27
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DEFINE_REG 28
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DEFINE_REG 29
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DEFINE_REG 30
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DEFINE_REG 31
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#endif /* HAVE_IBM_ASM */
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