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eac800043f
Sync asm/asm.h with Linux 5.7. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Tested-by: Stefan Roese <sr@denx.de>
315 lines
6.0 KiB
C
315 lines
6.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 1995, 1996, 1997, 1999, 2001 by Ralf Baechle
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* Copyright (C) 1999 by Silicon Graphics, Inc.
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* Copyright (C) 2001 MIPS Technologies, Inc.
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* Copyright (C) 2002 Maciej W. Rozycki
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*
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* Some useful macros for MIPS assembler code
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*
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* Some of the routines below contain useless nops that will be optimized
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* away by gas in -O mode. These nops are however required to fill delay
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* slots in noreorder mode.
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*/
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#ifndef __ASM_ASM_H
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#define __ASM_ASM_H
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#include <asm/sgidefs.h>
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#define ENTRY(symbol) \
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.globl symbol; \
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.type symbol, @function; \
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.ent symbol, 0; \
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symbol: .cfi_startproc; \
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.insn
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/*
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* LEAF - declare leaf routine
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*/
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#define LEAF(symbol) \
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.globl symbol; \
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.align 2; \
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.type symbol, @function; \
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.ent symbol, 0; \
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.section .text.symbol, "x"; \
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symbol: .frame sp, 0, ra; \
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.cfi_startproc; \
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.insn
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/*
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* NESTED - declare nested routine entry point
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*/
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#define NESTED(symbol, framesize, rpc) \
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.globl symbol; \
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.align 2; \
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.type symbol, @function; \
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.ent symbol, 0; \
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.section .text.symbol, "x"; \
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symbol: .frame sp, framesize, rpc; \
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.cfi_startproc; \
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.insn
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/*
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* END - mark end of function
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*/
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#define END(function) \
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.cfi_endproc; \
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.end function; \
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.size function, .-function
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/*
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* EXPORT - export definition of symbol
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*/
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#define EXPORT(symbol) \
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.globl symbol; \
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symbol:
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/*
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* FEXPORT - export definition of a function symbol
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*/
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#define FEXPORT(symbol) \
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.globl symbol; \
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.type symbol, @function; \
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symbol: .insn
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/*
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* ABS - export absolute symbol
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*/
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#define ABS(symbol,value) \
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.globl symbol; \
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symbol = value
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#define PANIC(msg) \
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.set push; \
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.set reorder; \
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PTR_LA a0, 8f; \
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jal panic; \
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9: b 9b; \
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.set pop; \
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TEXT(msg)
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/*
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* Print formatted string
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*/
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#ifdef CONFIG_PRINTK
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#define PRINT(string) \
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.set push; \
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.set reorder; \
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PTR_LA a0, 8f; \
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jal printk; \
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.set pop; \
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TEXT(string)
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#else
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#define PRINT(string)
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#endif
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#define TEXT(msg) \
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.pushsection .data; \
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8: .asciiz msg; \
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.popsection;
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/*
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* Stack alignment
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*/
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#if (_MIPS_SIM == _MIPS_SIM_ABI32)
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#define ALSZ 7
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#define ALMASK ~7
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#endif
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#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
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#define ALSZ 15
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#define ALMASK ~15
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#endif
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/*
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* Macros to handle different pointer/register sizes for 32/64-bit code
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*/
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/*
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* Size of a register
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*/
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#ifdef __mips64
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#define SZREG 8
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#else
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#define SZREG 4
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#endif
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/*
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* Use the following macros in assemblercode to load/store registers,
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* pointers etc.
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*/
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#if (_MIPS_SIM == _MIPS_SIM_ABI32)
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#define REG_S sw
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#define REG_L lw
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#define REG_SUBU subu
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#define REG_ADDU addu
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#endif
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#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
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#define REG_S sd
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#define REG_L ld
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#define REG_SUBU dsubu
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#define REG_ADDU daddu
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#endif
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/*
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* How to add/sub/load/store/shift C int variables.
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*/
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#if (_MIPS_SZINT == 32)
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#define INT_ADD add
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#define INT_ADDU addu
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#define INT_ADDI addi
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#define INT_ADDIU addiu
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#define INT_SUB sub
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#define INT_SUBU subu
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#define INT_L lw
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#define INT_S sw
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#define INT_SLL sll
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#define INT_SLLV sllv
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#define INT_SRL srl
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#define INT_SRLV srlv
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#define INT_SRA sra
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#define INT_SRAV srav
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#endif
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#if (_MIPS_SZINT == 64)
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#define INT_ADD dadd
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#define INT_ADDU daddu
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#define INT_ADDI daddi
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#define INT_ADDIU daddiu
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#define INT_SUB dsub
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#define INT_SUBU dsubu
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#define INT_L ld
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#define INT_S sd
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#define INT_SLL dsll
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#define INT_SLLV dsllv
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#define INT_SRL dsrl
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#define INT_SRLV dsrlv
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#define INT_SRA dsra
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#define INT_SRAV dsrav
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#endif
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/*
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* How to add/sub/load/store/shift C long variables.
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*/
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#if (_MIPS_SZLONG == 32)
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#define LONG_ADD add
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#define LONG_ADDU addu
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#define LONG_ADDI addi
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#define LONG_ADDIU addiu
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#define LONG_SUB sub
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#define LONG_SUBU subu
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#define LONG_L lw
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#define LONG_S sw
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#define LONG_SP swp
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#define LONG_SLL sll
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#define LONG_SLLV sllv
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#define LONG_SRL srl
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#define LONG_SRLV srlv
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#define LONG_SRA sra
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#define LONG_SRAV srav
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#define LONG .word
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#define LONGSIZE 4
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#define LONGMASK 3
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#define LONGLOG 2
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#endif
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#if (_MIPS_SZLONG == 64)
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#define LONG_ADD dadd
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#define LONG_ADDU daddu
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#define LONG_ADDI daddi
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#define LONG_ADDIU daddiu
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#define LONG_SUB dsub
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#define LONG_SUBU dsubu
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#define LONG_L ld
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#define LONG_S sd
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#define LONG_SP sdp
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#define LONG_SLL dsll
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#define LONG_SLLV dsllv
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#define LONG_SRL dsrl
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#define LONG_SRLV dsrlv
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#define LONG_SRA dsra
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#define LONG_SRAV dsrav
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#define LONG .dword
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#define LONGSIZE 8
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#define LONGMASK 7
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#define LONGLOG 3
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#endif
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/*
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* How to add/sub/load/store/shift pointers.
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*/
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#if (_MIPS_SZPTR == 32)
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#define PTR_ADD add
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#define PTR_ADDU addu
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#define PTR_ADDI addi
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#define PTR_ADDIU addiu
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#define PTR_SUB sub
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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_LA la
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#define PTR_LI li
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#define PTR_SLL sll
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#define PTR_SLLV sllv
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#define PTR_SRL srl
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#define PTR_SRLV srlv
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#define PTR_SRA sra
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#define PTR_SRAV srav
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#define PTR_SCALESHIFT 2
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#define PTR .word
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#define PTRSIZE 4
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#define PTRLOG 2
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#endif
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#if (_MIPS_SZPTR == 64)
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#define PTR_ADD dadd
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#define PTR_ADDU daddu
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#define PTR_ADDI daddi
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#define PTR_ADDIU daddiu
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#define PTR_SUB dsub
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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_LA dla
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#define PTR_LI dli
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#define PTR_SLL dsll
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#define PTR_SLLV dsllv
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#define PTR_SRL dsrl
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#define PTR_SRLV dsrlv
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#define PTR_SRA dsra
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#define PTR_SRAV dsrav
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#define PTR_SCALESHIFT 3
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#define PTR .dword
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#define PTRSIZE 8
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#define PTRLOG 3
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#endif
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/*
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* Some cp0 registers were extended to 64bit for MIPS III.
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*/
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#if (_MIPS_SIM == _MIPS_SIM_ABI32)
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#define MFC0 mfc0
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#define MTC0 mtc0
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#endif
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#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
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#define MFC0 dmfc0
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#define MTC0 dmtc0
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#endif
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#define SSNOP sll zero, zero, 1
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#ifdef CONFIG_SGI_IP28
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/* Inhibit speculative stores to volatile (e.g.DMA) or invalid addresses. */
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#include <asm/cacheops.h>
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#define R10KCBARRIER(addr) cache CACHE_BARRIER, addr;
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#else
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#define R10KCBARRIER(addr)
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#endif
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#endif /* __ASM_ASM_H */
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