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b38bc68b9e
At present, spin locks can only defined from C files. Add some macros such that they can be defined from assembly files too. Change-Id: I64f0c214062f5c15b3c8b412c7f25c908e87d970 Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
137 lines
4.2 KiB
ArmAsm
137 lines
4.2 KiB
ArmAsm
/*
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* Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __ASM_MACROS_S__
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#define __ASM_MACROS_S__
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#include <arch.h>
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#include <asm_macros_common.S>
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#include <spinlock.h>
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#define WORD_SIZE 4
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/*
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* Co processor register accessors
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*/
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.macro ldcopr reg, coproc, opc1, CRn, CRm, opc2
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mrc \coproc, \opc1, \reg, \CRn, \CRm, \opc2
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.endm
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.macro ldcopr16 reg1, reg2, coproc, opc1, CRm
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mrrc \coproc, \opc1, \reg1, \reg2, \CRm
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.endm
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.macro stcopr reg, coproc, opc1, CRn, CRm, opc2
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mcr \coproc, \opc1, \reg, \CRn, \CRm, \opc2
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.endm
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.macro stcopr16 reg1, reg2, coproc, opc1, CRm
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mcrr \coproc, \opc1, \reg1, \reg2, \CRm
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.endm
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/* Cache line size helpers */
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.macro dcache_line_size reg, tmp
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ldcopr \tmp, CTR
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ubfx \tmp, \tmp, #CTR_DMINLINE_SHIFT, #CTR_DMINLINE_WIDTH
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mov \reg, #WORD_SIZE
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lsl \reg, \reg, \tmp
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.endm
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.macro icache_line_size reg, tmp
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ldcopr \tmp, CTR
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and \tmp, \tmp, #CTR_IMINLINE_MASK
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mov \reg, #WORD_SIZE
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lsl \reg, \reg, \tmp
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.endm
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/*
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* Declare the exception vector table, enforcing it is aligned on a
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* 32 byte boundary.
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*/
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.macro vector_base label
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.section .vectors, "ax"
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.align 5
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\label:
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.endm
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/*
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* This macro calculates the base address of the current CPU's multi
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* processor(MP) stack using the plat_my_core_pos() index, the name of
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* the stack storage and the size of each stack.
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* Out: r0 = physical address of stack base
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* Clobber: r14, r1, r2
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*/
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.macro get_my_mp_stack _name, _size
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bl plat_my_core_pos
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ldr r2, =(\_name + \_size)
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mov r1, #\_size
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mla r0, r0, r1, r2
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.endm
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/*
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* This macro calculates the base address of a uniprocessor(UP) stack
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* using the name of the stack storage and the size of the stack
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* Out: r0 = physical address of stack base
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*/
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.macro get_up_stack _name, _size
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ldr r0, =(\_name + \_size)
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.endm
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/*
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* Macro to mark instances where we're jumping to a function and don't
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* expect a return. To provide the function being jumped to with
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* additional information, we use 'bl' instruction to jump rather than
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* 'b'.
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*
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* Debuggers infer the location of a call from where LR points to, which
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* is usually the instruction after 'bl'. If this macro expansion
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* happens to be the last location in a function, that'll cause the LR
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* to point a location beyond the function, thereby misleading debugger
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* back trace. We therefore insert a 'nop' after the function call for
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* debug builds, unless 'skip_nop' parameter is non-zero.
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*/
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.macro no_ret _func:req, skip_nop=0
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bl \_func
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#if DEBUG
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.ifeq \skip_nop
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nop
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.endif
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#endif
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.endm
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/*
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* Reserve space for a spin lock in assembly file.
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*/
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.macro define_asm_spinlock _name:req
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.align SPINLOCK_ASM_ALIGN
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\_name:
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.space SPINLOCK_ASM_SIZE
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.endm
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#endif /* __ASM_MACROS_S__ */
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