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linux/arch/nios2/include/asm/asm-macros.h
Thomas Gleixner 4359375c31 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 12 
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program 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 good title or non infringement see the gnu general public
  license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 7 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154041.727898173@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:45 +02:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Macro used to simplify coding multi-line assembler.
* Some of the bit test macro can simplify down to one line
* depending on the mask value.
*
* Copyright (C) 2004 Microtronix Datacom Ltd.
*
* All rights reserved.
*/
#ifndef _ASM_NIOS2_ASMMACROS_H
#define _ASM_NIOS2_ASMMACROS_H
/*
* ANDs reg2 with mask and places the result in reg1.
*
* You cannnot use the same register for reg1 & reg2.
*/
.macro ANDI32 reg1, reg2, mask
.if \mask & 0xffff
.if \mask & 0xffff0000
movhi \reg1, %hi(\mask)
movui \reg1, %lo(\mask)
and \reg1, \reg1, \reg2
.else
andi \reg1, \reg2, %lo(\mask)
.endif
.else
andhi \reg1, \reg2, %hi(\mask)
.endif
.endm
/*
* ORs reg2 with mask and places the result in reg1.
*
* It is safe to use the same register for reg1 & reg2.
*/
.macro ORI32 reg1, reg2, mask
.if \mask & 0xffff
.if \mask & 0xffff0000
orhi \reg1, \reg2, %hi(\mask)
ori \reg1, \reg2, %lo(\mask)
.else
ori \reg1, \reg2, %lo(\mask)
.endif
.else
orhi \reg1, \reg2, %hi(\mask)
.endif
.endm
/*
* XORs reg2 with mask and places the result in reg1.
*
* It is safe to use the same register for reg1 & reg2.
*/
.macro XORI32 reg1, reg2, mask
.if \mask & 0xffff
.if \mask & 0xffff0000
xorhi \reg1, \reg2, %hi(\mask)
xori \reg1, \reg1, %lo(\mask)
.else
xori \reg1, \reg2, %lo(\mask)
.endif
.else
xorhi \reg1, \reg2, %hi(\mask)
.endif
.endm
/*
* This is a support macro for BTBZ & BTBNZ. It checks
* the bit to make sure it is valid 32 value.
*
* It is safe to use the same register for reg1 & reg2.
*/
.macro BT reg1, reg2, bit
.if \bit > 31
.err
.else
.if \bit < 16
andi \reg1, \reg2, (1 << \bit)
.else
andhi \reg1, \reg2, (1 << (\bit - 16))
.endif
.endif
.endm
/*
* Tests the bit in reg2 and branches to label if the
* bit is zero. The result of the bit test is stored in reg1.
*
* It is safe to use the same register for reg1 & reg2.
*/
.macro BTBZ reg1, reg2, bit, label
BT \reg1, \reg2, \bit
beq \reg1, r0, \label
.endm
/*
* Tests the bit in reg2 and branches to label if the
* bit is non-zero. The result of the bit test is stored in reg1.
*
* It is safe to use the same register for reg1 & reg2.
*/
.macro BTBNZ reg1, reg2, bit, label
BT \reg1, \reg2, \bit
bne \reg1, r0, \label
.endm
/*
* Tests the bit in reg2 and then compliments the bit in reg2.
* The result of the bit test is stored in reg1.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTC reg1, reg2, bit
.if \bit > 31
.err
.else
.if \bit < 16
andi \reg1, \reg2, (1 << \bit)
xori \reg2, \reg2, (1 << \bit)
.else
andhi \reg1, \reg2, (1 << (\bit - 16))
xorhi \reg2, \reg2, (1 << (\bit - 16))
.endif
.endif
.endm
/*
* Tests the bit in reg2 and then sets the bit in reg2.
* The result of the bit test is stored in reg1.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTS reg1, reg2, bit
.if \bit > 31
.err
.else
.if \bit < 16
andi \reg1, \reg2, (1 << \bit)
ori \reg2, \reg2, (1 << \bit)
.else
andhi \reg1, \reg2, (1 << (\bit - 16))
orhi \reg2, \reg2, (1 << (\bit - 16))
.endif
.endif
.endm
/*
* Tests the bit in reg2 and then resets the bit in reg2.
* The result of the bit test is stored in reg1.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTR reg1, reg2, bit
.if \bit > 31
.err
.else
.if \bit < 16
andi \reg1, \reg2, (1 << \bit)
andi \reg2, \reg2, %lo(~(1 << \bit))
.else
andhi \reg1, \reg2, (1 << (\bit - 16))
andhi \reg2, \reg2, %lo(~(1 << (\bit - 16)))
.endif
.endif
.endm
/*
* Tests the bit in reg2 and then compliments the bit in reg2.
* The result of the bit test is stored in reg1. If the
* original bit was zero it branches to label.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTCBZ reg1, reg2, bit, label
BTC \reg1, \reg2, \bit
beq \reg1, r0, \label
.endm
/*
* Tests the bit in reg2 and then compliments the bit in reg2.
* The result of the bit test is stored in reg1. If the
* original bit was non-zero it branches to label.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTCBNZ reg1, reg2, bit, label
BTC \reg1, \reg2, \bit
bne \reg1, r0, \label
.endm
/*
* Tests the bit in reg2 and then sets the bit in reg2.
* The result of the bit test is stored in reg1. If the
* original bit was zero it branches to label.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTSBZ reg1, reg2, bit, label
BTS \reg1, \reg2, \bit
beq \reg1, r0, \label
.endm
/*
* Tests the bit in reg2 and then sets the bit in reg2.
* The result of the bit test is stored in reg1. If the
* original bit was non-zero it branches to label.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTSBNZ reg1, reg2, bit, label
BTS \reg1, \reg2, \bit
bne \reg1, r0, \label
.endm
/*
* Tests the bit in reg2 and then resets the bit in reg2.
* The result of the bit test is stored in reg1. If the
* original bit was zero it branches to label.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTRBZ reg1, reg2, bit, label
BTR \reg1, \reg2, \bit
bne \reg1, r0, \label
.endm
/*
* Tests the bit in reg2 and then resets the bit in reg2.
* The result of the bit test is stored in reg1. If the
* original bit was non-zero it branches to label.
*
* It is NOT safe to use the same register for reg1 & reg2.
*/
.macro BTRBNZ reg1, reg2, bit, label
BTR \reg1, \reg2, \bit
bne \reg1, r0, \label
.endm
/*
* Tests the bits in mask against reg2 stores the result in reg1.
* If the all the bits in the mask are zero it branches to label.
*
* It is safe to use the same register for reg1 & reg2.
*/
.macro TSTBZ reg1, reg2, mask, label
ANDI32 \reg1, \reg2, \mask
beq \reg1, r0, \label
.endm
/*
* Tests the bits in mask against reg2 stores the result in reg1.
* If the any of the bits in the mask are 1 it branches to label.
*
* It is safe to use the same register for reg1 & reg2.
*/
.macro TSTBNZ reg1, reg2, mask, label
ANDI32 \reg1, \reg2, \mask
bne \reg1, r0, \label
.endm
/*
* Pushes reg onto the stack.
*/
.macro PUSH reg
addi sp, sp, -4
stw \reg, 0(sp)
.endm
/*
* Pops the top of the stack into reg.
*/
.macro POP reg
ldw \reg, 0(sp)
addi sp, sp, 4
.endm
#endif /* _ASM_NIOS2_ASMMACROS_H */
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