299 lines
6.2 KiB
C
299 lines
6.2 KiB
C
/* 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 */
|