/* * Copyright (c) 2008 Mans Rullgard * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #ifdef __ELF__ # define ELF #else # define ELF @ #endif #if CONFIG_THUMB # define A @ # define T #else # define A # define T @ #endif #if HAVE_NEON .arch armv7-a #elif HAVE_ARMV6T2 .arch armv6t2 #elif HAVE_ARMV6 .arch armv6 #elif HAVE_ARMV5TE .arch armv5te #endif #if HAVE_NEON .fpu neon #elif HAVE_ARMVFP .fpu vfp #endif .syntax unified T .thumb .macro require8 val=1 ELF .eabi_attribute 24, \val .endm .macro preserve8 val=1 ELF .eabi_attribute 25, \val .endm .macro function name, export=0 .set .Lpic_idx, 0 .set .Lpic_gp, 0 .macro endfunc .if .Lpic_idx .align 2 .altmacro put_pic %(.Lpic_idx - 1) .noaltmacro .endif ELF .size \name, . - \name .endfunc .purgem endfunc .endm .text .align 2 .if \export .global EXTERN_ASM\name EXTERN_ASM\name: .endif ELF .type \name, %function .func \name \name: .endm .macro const name, align=2 .macro endconst ELF .size \name, . - \name .purgem endconst .endm .section .rodata .align \align \name: .endm #if !HAVE_ARMV6T2 .macro movw rd, val mov \rd, \val & 255 orr \rd, \val & ~255 .endm #endif .macro mov32 rd, val #if HAVE_ARMV6T2 movw \rd, #(\val) & 0xffff .if (\val) >> 16 movt \rd, #(\val) >> 16 .endif #else ldr \rd, =\val #endif .endm .macro put_pic num put_pic_\num .endm .macro do_def_pic num, val, label .macro put_pic_\num .if \num .altmacro put_pic %(\num - 1) .noaltmacro .endif \label: .word \val .purgem put_pic_\num .endm .endm .macro def_pic val, label .altmacro do_def_pic %.Lpic_idx, \val, \label .noaltmacro .set .Lpic_idx, .Lpic_idx + 1 .endm .macro ldpic rd, val, indir=0 ldr \rd, .Lpicoff\@ .Lpic\@: .if \indir ldr \rd, [pc, \rd] .else add \rd, pc .endif def_pic \val - (.Lpic\@ + (8 >> CONFIG_THUMB)), .Lpicoff\@ .endm .macro movrel rd, val #if CONFIG_PIC ldpic \rd, \val #elif HAVE_ARMV6T2 && !defined(__APPLE__) movw \rd, #:lower16:\val movt \rd, #:upper16:\val #else ldr \rd, =\val #endif .endm .macro movrelx rd, val, gp #if CONFIG_PIC && defined(__ELF__) .ifnb \gp .if .Lpic_gp .unreq gp .endif gp .req \gp ldpic gp, _GLOBAL_OFFSET_TABLE_ .elseif !.Lpic_gp gp .req r12 ldpic gp, _GLOBAL_OFFSET_TABLE_ .endif .set .Lpic_gp, 1 ldr \rd, .Lpicoff\@ ldr \rd, [gp, \rd] def_pic \val(GOT), .Lpicoff\@ #elif CONFIG_PIC && defined(__APPLE__) ldpic \rd, .Lpic\@, indir=1 .non_lazy_symbol_pointer .Lpic\@: .indirect_symbol \val .word 0 .text #else movrel \rd, \val #endif .endm .macro add_sh rd, rn, rm, sh:vararg A add \rd, \rn, \rm, \sh T mov \rm, \rm, \sh T add \rd, \rn, \rm .endm .macro ldr_pre rt, rn, rm:vararg A ldr \rt, [\rn, \rm]! T add \rn, \rn, \rm T ldr \rt, [\rn] .endm .macro ldr_dpre rt, rn, rm:vararg A ldr \rt, [\rn, -\rm]! T sub \rn, \rn, \rm T ldr \rt, [\rn] .endm .macro ldr_nreg rt, rn, rm:vararg A ldr \rt, [\rn, -\rm] T sub \rt, \rn, \rm T ldr \rt, [\rt] .endm .macro ldr_post rt, rn, rm:vararg A ldr \rt, [\rn], \rm T ldr \rt, [\rn] T add \rn, \rn, \rm .endm .macro ldrd_reg rt, rt2, rn, rm A ldrd \rt, \rt2, [\rn, \rm] T add \rt, \rn, \rm T ldrd \rt, \rt2, [\rt] .endm .macro ldrd_post rt, rt2, rn, rm A ldrd \rt, \rt2, [\rn], \rm T ldrd \rt, \rt2, [\rn] T add \rn, \rn, \rm .endm .macro ldrh_pre rt, rn, rm A ldrh \rt, [\rn, \rm]! T add \rn, \rn, \rm T ldrh \rt, [\rn] .endm .macro ldrh_dpre rt, rn, rm A ldrh \rt, [\rn, -\rm]! T sub \rn, \rn, \rm T ldrh \rt, [\rn] .endm .macro ldrh_post rt, rn, rm A ldrh \rt, [\rn], \rm T ldrh \rt, [\rn] T add \rn, \rn, \rm .endm .macro ldrb_post rt, rn, rm A ldrb \rt, [\rn], \rm T ldrb \rt, [\rn] T add \rn, \rn, \rm .endm .macro str_post rt, rn, rm:vararg A str \rt, [\rn], \rm T str \rt, [\rn] T add \rn, \rn, \rm .endm .macro strb_post rt, rn, rm:vararg A strb \rt, [\rn], \rm T strb \rt, [\rn] T add \rn, \rn, \rm .endm .macro strd_post rt, rt2, rn, rm A strd \rt, \rt2, [\rn], \rm T strd \rt, \rt2, [\rn] T add \rn, \rn, \rm .endm .macro strh_pre rt, rn, rm A strh \rt, [\rn, \rm]! T add \rn, \rn, \rm T strh \rt, [\rn] .endm .macro strh_dpre rt, rn, rm A strh \rt, [\rn, -\rm]! T sub \rn, \rn, \rm T strh \rt, [\rn] .endm .macro strh_post rt, rn, rm A strh \rt, [\rn], \rm T strh \rt, [\rn] T add \rn, \rn, \rm .endm .macro strh_dpost rt, rn, rm A strh \rt, [\rn], -\rm T strh \rt, [\rn] T sub \rn, \rn, \rm .endm #if HAVE_VFP_ARGS .eabi_attribute 28, 1 # define VFP # define NOVFP @ #else # define VFP @ # define NOVFP #endif #define GLUE(a, b) a ## b #define JOIN(a, b) GLUE(a, b) #define X(s) JOIN(EXTERN_ASM, s)