96cf5185a9
This patch implements the rest low-level libraries. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
131 lines
2.7 KiB
C
131 lines
2.7 KiB
C
/*
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* linux/arch/unicore32/include/asm/assembler.h
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*
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* Code specific to PKUnity SoC and UniCore ISA
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*
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* Copyright (C) 2001-2010 GUAN Xue-tao
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Do not include any C declarations in this file - it is included by
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* assembler source.
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*/
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#ifndef __ASSEMBLY__
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#error "Only include this from assembly code"
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#endif
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#include <asm/ptrace.h>
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/*
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* Little Endian independent macros for shifting bytes within registers.
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*/
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#define pull >>
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#define push <<
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#define get_byte_0 << #0
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#define get_byte_1 >> #8
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#define get_byte_2 >> #16
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#define get_byte_3 >> #24
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#define put_byte_0 << #0
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#define put_byte_1 << #8
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#define put_byte_2 << #16
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#define put_byte_3 << #24
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#define cadd cmpadd
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#define cand cmpand
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#define csub cmpsub
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#define cxor cmpxor
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/*
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* Enable and disable interrupts
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*/
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.macro disable_irq, temp
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mov \temp, asr
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andn \temp, \temp, #0xFF
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or \temp, \temp, #PSR_I_BIT | PRIV_MODE
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mov.a asr, \temp
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.endm
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.macro enable_irq, temp
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mov \temp, asr
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andn \temp, \temp, #0xFF
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or \temp, \temp, #PRIV_MODE
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mov.a asr, \temp
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.endm
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#define USER(x...) \
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9999: x; \
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.pushsection __ex_table, "a"; \
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.align 3; \
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.long 9999b, 9001f; \
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.popsection
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.macro notcond, cond, nexti = .+8
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.ifc \cond, eq
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bne \nexti
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.else; .ifc \cond, ne
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beq \nexti
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.else; .ifc \cond, ea
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bub \nexti
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.else; .ifc \cond, ub
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bea \nexti
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.else; .ifc \cond, fs
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bns \nexti
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.else; .ifc \cond, ns
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bfs \nexti
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.else; .ifc \cond, fv
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bnv \nexti
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.else; .ifc \cond, nv
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bfv \nexti
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.else; .ifc \cond, ua
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beb \nexti
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.else; .ifc \cond, eb
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bua \nexti
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.else; .ifc \cond, eg
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bsl \nexti
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.else; .ifc \cond, sl
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beg \nexti
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.else; .ifc \cond, sg
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bel \nexti
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.else; .ifc \cond, el
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bsg \nexti
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.else; .ifnc \cond, al
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.error "Unknown cond in notcond macro argument"
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.endif; .endif; .endif; .endif; .endif; .endif; .endif
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.endif; .endif; .endif; .endif; .endif; .endif; .endif
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.endif
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.endm
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.macro usracc, instr, reg, ptr, inc, cond, rept, abort
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.rept \rept
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notcond \cond, .+8
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9999 :
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.if \inc == 1
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\instr\()b.u \reg, [\ptr], #\inc
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.elseif \inc == 4
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\instr\()w.u \reg, [\ptr], #\inc
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.else
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.error "Unsupported inc macro argument"
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.endif
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.pushsection __ex_table, "a"
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.align 3
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.long 9999b, \abort
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.popsection
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.endr
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.endm
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.macro strusr, reg, ptr, inc, cond = al, rept = 1, abort = 9001f
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usracc st, \reg, \ptr, \inc, \cond, \rept, \abort
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.endm
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.macro ldrusr, reg, ptr, inc, cond = al, rept = 1, abort = 9001f
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usracc ld, \reg, \ptr, \inc, \cond, \rept, \abort
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.endm
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.macro nop8
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.rept 8
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nop
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.endr
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.endm
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