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