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https://github.com/FFmpeg/FFmpeg.git
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fd5fd48659
Clang is more strict on the type of asm operands, float or double type variable should use constraint 'f', integer variable should use constraint 'r'. Signed-off-by: Jin Bo <jinbo@loongson.cn> Reviewed-by: yinshiyou-hf@loongson.cn Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/*
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* Copyright (c) 2015 Imagination Technologies Ltd
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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/**
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* @file
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* MIPS assembly defines from sys/asm.h but rewritten for use with C inline
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* assembly (rather than from within .s files).
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*/
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#ifndef AVUTIL_MIPS_ASMDEFS_H
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#define AVUTIL_MIPS_ASMDEFS_H
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#include <stdint.h>
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#if defined(_ABI64) && _MIPS_SIM == _ABI64
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# define mips_reg int64_t
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# define PTRSIZE " 8 "
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# define PTRLOG " 3 "
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# define PTR_ADDU "daddu "
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# define PTR_ADDIU "daddiu "
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# define PTR_ADDI "daddi "
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# define PTR_SUBU "dsubu "
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# define PTR_L "ld "
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# define PTR_S "sd "
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# define PTR_SRA "dsra "
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# define PTR_SRL "dsrl "
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# define PTR_SLL "dsll "
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#else
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# define mips_reg int32_t
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# define PTRSIZE " 4 "
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# define PTRLOG " 2 "
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# define PTR_ADDU "addu "
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# define PTR_ADDIU "addiu "
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# define PTR_ADDI "addi "
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# define PTR_SUBU "subu "
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# define PTR_L "lw "
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# define PTR_S "sw "
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# define PTR_SRA "sra "
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# define PTR_SRL "srl "
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# define PTR_SLL "sll "
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#endif
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/*
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* parse_r var, r - Helper assembler macro for parsing register names.
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*
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* This converts the register name in $n form provided in \r to the
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* corresponding register number, which is assigned to the variable \var. It is
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* needed to allow explicit encoding of instructions in inline assembly where
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* registers are chosen by the compiler in $n form, allowing us to avoid using
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* fixed register numbers.
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*
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* It also allows newer instructions (not implemented by the assembler) to be
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* transparently implemented using assembler macros, instead of needing separate
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* cases depending on toolchain support.
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*
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* Simple usage example:
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* __asm__ __volatile__("parse_r __rt, %0\n\t"
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* ".insn\n\t"
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* "# di %0\n\t"
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* ".word (0x41606000 | (__rt << 16))"
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* : "=r" (status);
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*/
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/* Match an individual register number and assign to \var */
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#define _IFC_REG(n) \
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".ifc \\r, $" #n "\n\t" \
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"\\var = " #n "\n\t" \
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".endif\n\t"
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__asm__(".macro parse_r var r\n\t"
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"\\var = -1\n\t"
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_IFC_REG(0) _IFC_REG(1) _IFC_REG(2) _IFC_REG(3)
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_IFC_REG(4) _IFC_REG(5) _IFC_REG(6) _IFC_REG(7)
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_IFC_REG(8) _IFC_REG(9) _IFC_REG(10) _IFC_REG(11)
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_IFC_REG(12) _IFC_REG(13) _IFC_REG(14) _IFC_REG(15)
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_IFC_REG(16) _IFC_REG(17) _IFC_REG(18) _IFC_REG(19)
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_IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23)
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_IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27)
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_IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31)
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".iflt \\var\n\t"
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".error \"Unable to parse register name \\r\"\n\t"
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".endif\n\t"
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".endm");
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/* General union structure for clang adaption */
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union mmi_intfloat64 {
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int64_t i;
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double f;
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};
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#endif /* AVCODEC_MIPS_ASMDEFS_H */
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