2 * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
43 #if HAVE_AS_FPU_DIRECTIVE
49 #if CONFIG_THUMB && defined(__APPLE__)
55 #if HAVE_AS_ARCH_DIRECTIVE
66 #if HAVE_AS_OBJECT_ARCH
67 ELF .object_arch armv4
72 ELF .eabi_attribute 10, 0 @ suppress Tag_FP_arch
73 ELF .eabi_attribute 12, 0 @ suppress Tag_Advanced_SIMD_arch
76 ELF .eabi_attribute 10, 0 @ suppress Tag_FP_arch
81 ELF .eabi_attribute 25, 1 @ Tag_ABI_align_preserved
82 ELF .section .note.GNU-stack,"",%progbits @ Mark stack as non-executable
84 .macro function name, export=0, align=2
91 put_pic %(.Lpic_idx - 1)
97 ELF .size \name, . - \name
104 .global EXTERN_ASM\name
105 ELF .type EXTERN_ASM\name, %function
106 FUNC .func EXTERN_ASM\name
107 TFUNC .thumb_func EXTERN_ASM\name
110 ELF .type \name, %function
112 TFUNC .thumb_func \name
117 .macro const name, align=2, relocate=0
119 ELF .size \name, . - \name
122 #if HAVE_SECTION_DATA_REL_RO
124 .section .data.rel.ro
128 #elif defined(_WIN32)
130 #elif !defined(__MACH__)
139 #if !HAVE_ARMV6T2_EXTERNAL
147 #if HAVE_ARMV6T2_EXTERNAL
148 movw \rd, #(\val) & 0xffff
150 movt \rd, #(\val) >> 16
161 .macro do_def_pic num, val, label
173 .macro def_pic val, label
175 do_def_pic %.Lpic_idx, \val, \label
177 .set .Lpic_idx, .Lpic_idx + 1
180 .macro ldpic rd, val, indir=0
190 def_pic \val - (.Lpic\@ + (8 >> CONFIG_THUMB)), .Lpicoff\@
193 .macro movrel rd, val
196 #elif HAVE_ARMV6T2_EXTERNAL && !defined(__APPLE__)
197 movw \rd, #:lower16:\val
198 movt \rd, #:upper16:\val
204 .macro movrelx rd, val, gp
206 .error "movrelx needs two distinct registers"
209 .warning "movrelx rd=\rd without explicit set gp"
212 .warning "movrelx rd=\rd without explicit set gp"
214 #if CONFIG_PIC && defined(__ELF__)
220 ldpic gp, _GLOBAL_OFFSET_TABLE_
223 ldpic gp, _GLOBAL_OFFSET_TABLE_
228 def_pic \val(GOT), .Lpicoff\@
229 #elif CONFIG_PIC && defined(__APPLE__)
230 ldpic \rd, .Lpic\@, indir=1
231 .non_lazy_symbol_pointer
233 .indirect_symbol \val
241 .macro add_sh rd, rn, rm, sh:vararg
242 A add \rd, \rn, \rm, \sh
247 .macro ldr_pre rt, rn, rm:vararg
248 A ldr \rt, [\rn, \rm]!
253 .macro ldr_dpre rt, rn, rm:vararg
254 A ldr \rt, [\rn, -\rm]!
259 .macro ldr_nreg rt, rn, rm:vararg
260 A ldr \rt, [\rn, -\rm]
265 .macro ldr_post rt, rn, rm:vararg
266 A ldr \rt, [\rn], \rm
271 .macro ldrc_pre cc, rt, rn, rm:vararg
272 A ldr\cc \rt, [\rn, \rm]!
274 T add\cc \rn, \rn, \rm
278 .macro ldrd_reg rt, rt2, rn, rm
279 A ldrd \rt, \rt2, [\rn, \rm]
281 T ldrd \rt, \rt2, [\rt]
284 .macro ldrd_post rt, rt2, rn, rm
285 A ldrd \rt, \rt2, [\rn], \rm
286 T ldrd \rt, \rt2, [\rn]
290 .macro ldrh_pre rt, rn, rm
291 A ldrh \rt, [\rn, \rm]!
296 .macro ldrh_dpre rt, rn, rm
297 A ldrh \rt, [\rn, -\rm]!
302 .macro ldrh_post rt, rn, rm
303 A ldrh \rt, [\rn], \rm
308 .macro ldrb_post rt, rn, rm
309 A ldrb \rt, [\rn], \rm
314 .macro str_post rt, rn, rm:vararg
315 A str \rt, [\rn], \rm
320 .macro strb_post rt, rn, rm:vararg
321 A strb \rt, [\rn], \rm
326 .macro strd_post rt, rt2, rn, rm
327 A strd \rt, \rt2, [\rn], \rm
328 T strd \rt, \rt2, [\rn]
332 .macro strh_pre rt, rn, rm
333 A strh \rt, [\rn, \rm]!
338 .macro strh_dpre rt, rn, rm
339 A strh \rt, [\rn, -\rm]!
344 .macro strh_post rt, rn, rm
345 A strh \rt, [\rn], \rm
350 .macro strh_dpost rt, rn, rm
351 A strh \rt, [\rn], -\rm
357 ELF .eabi_attribute 28, 1
365 #define GLUE(a, b) a ## b
366 #define JOIN(a, b) GLUE(a, b)
367 #define X(s) JOIN(EXTERN_ASM, s)