mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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466aec5f29
This reverts commit 02987633df.
The basic premise of the patch was incorrect since MSA context
(including FP state) is saved using st.d which stores two consecutive
64-bit words in memory rather than a single 128-bit word. This means
that even with big endian MSA, the FP state is still in the first 64-bit
word.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9168/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
/*
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* asmmacro.h: Assembler macros to make things easier to read.
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*
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* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
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* Copyright (C) 1998, 1999, 2003 Ralf Baechle
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*/
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#ifndef _ASM_ASMMACRO_32_H
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#define _ASM_ASMMACRO_32_H
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#include <asm/asm-offsets.h>
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#include <asm/regdef.h>
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#include <asm/fpregdef.h>
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#include <asm/mipsregs.h>
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.macro fpu_save_single thread tmp=t0
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.set push
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SET_HARDFLOAT
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cfc1 \tmp, fcr31
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swc1 $f0, THREAD_FPR0(\thread)
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swc1 $f1, THREAD_FPR1(\thread)
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swc1 $f2, THREAD_FPR2(\thread)
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swc1 $f3, THREAD_FPR3(\thread)
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swc1 $f4, THREAD_FPR4(\thread)
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swc1 $f5, THREAD_FPR5(\thread)
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swc1 $f6, THREAD_FPR6(\thread)
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swc1 $f7, THREAD_FPR7(\thread)
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swc1 $f8, THREAD_FPR8(\thread)
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swc1 $f9, THREAD_FPR9(\thread)
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swc1 $f10, THREAD_FPR10(\thread)
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swc1 $f11, THREAD_FPR11(\thread)
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swc1 $f12, THREAD_FPR12(\thread)
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swc1 $f13, THREAD_FPR13(\thread)
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swc1 $f14, THREAD_FPR14(\thread)
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swc1 $f15, THREAD_FPR15(\thread)
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swc1 $f16, THREAD_FPR16(\thread)
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swc1 $f17, THREAD_FPR17(\thread)
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swc1 $f18, THREAD_FPR18(\thread)
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swc1 $f19, THREAD_FPR19(\thread)
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swc1 $f20, THREAD_FPR20(\thread)
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swc1 $f21, THREAD_FPR21(\thread)
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swc1 $f22, THREAD_FPR22(\thread)
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swc1 $f23, THREAD_FPR23(\thread)
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swc1 $f24, THREAD_FPR24(\thread)
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swc1 $f25, THREAD_FPR25(\thread)
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swc1 $f26, THREAD_FPR26(\thread)
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swc1 $f27, THREAD_FPR27(\thread)
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swc1 $f28, THREAD_FPR28(\thread)
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swc1 $f29, THREAD_FPR29(\thread)
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swc1 $f30, THREAD_FPR30(\thread)
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swc1 $f31, THREAD_FPR31(\thread)
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sw \tmp, THREAD_FCR31(\thread)
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.set pop
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.endm
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.macro fpu_restore_single thread tmp=t0
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.set push
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SET_HARDFLOAT
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lw \tmp, THREAD_FCR31(\thread)
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lwc1 $f0, THREAD_FPR0(\thread)
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lwc1 $f1, THREAD_FPR1(\thread)
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lwc1 $f2, THREAD_FPR2(\thread)
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lwc1 $f3, THREAD_FPR3(\thread)
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lwc1 $f4, THREAD_FPR4(\thread)
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lwc1 $f5, THREAD_FPR5(\thread)
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lwc1 $f6, THREAD_FPR6(\thread)
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lwc1 $f7, THREAD_FPR7(\thread)
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lwc1 $f8, THREAD_FPR8(\thread)
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lwc1 $f9, THREAD_FPR9(\thread)
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lwc1 $f10, THREAD_FPR10(\thread)
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lwc1 $f11, THREAD_FPR11(\thread)
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lwc1 $f12, THREAD_FPR12(\thread)
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lwc1 $f13, THREAD_FPR13(\thread)
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lwc1 $f14, THREAD_FPR14(\thread)
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lwc1 $f15, THREAD_FPR15(\thread)
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lwc1 $f16, THREAD_FPR16(\thread)
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lwc1 $f17, THREAD_FPR17(\thread)
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lwc1 $f18, THREAD_FPR18(\thread)
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lwc1 $f19, THREAD_FPR19(\thread)
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lwc1 $f20, THREAD_FPR20(\thread)
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lwc1 $f21, THREAD_FPR21(\thread)
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lwc1 $f22, THREAD_FPR22(\thread)
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lwc1 $f23, THREAD_FPR23(\thread)
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lwc1 $f24, THREAD_FPR24(\thread)
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lwc1 $f25, THREAD_FPR25(\thread)
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lwc1 $f26, THREAD_FPR26(\thread)
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lwc1 $f27, THREAD_FPR27(\thread)
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lwc1 $f28, THREAD_FPR28(\thread)
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lwc1 $f29, THREAD_FPR29(\thread)
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lwc1 $f30, THREAD_FPR30(\thread)
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lwc1 $f31, THREAD_FPR31(\thread)
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ctc1 \tmp, fcr31
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.set pop
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.endm
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.macro cpu_save_nonscratch thread
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LONG_S s0, THREAD_REG16(\thread)
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LONG_S s1, THREAD_REG17(\thread)
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LONG_S s2, THREAD_REG18(\thread)
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LONG_S s3, THREAD_REG19(\thread)
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LONG_S s4, THREAD_REG20(\thread)
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LONG_S s5, THREAD_REG21(\thread)
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LONG_S s6, THREAD_REG22(\thread)
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LONG_S s7, THREAD_REG23(\thread)
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LONG_S sp, THREAD_REG29(\thread)
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LONG_S fp, THREAD_REG30(\thread)
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.endm
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.macro cpu_restore_nonscratch thread
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LONG_L s0, THREAD_REG16(\thread)
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LONG_L s1, THREAD_REG17(\thread)
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LONG_L s2, THREAD_REG18(\thread)
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LONG_L s3, THREAD_REG19(\thread)
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LONG_L s4, THREAD_REG20(\thread)
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LONG_L s5, THREAD_REG21(\thread)
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LONG_L s6, THREAD_REG22(\thread)
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LONG_L s7, THREAD_REG23(\thread)
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LONG_L sp, THREAD_REG29(\thread)
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LONG_L fp, THREAD_REG30(\thread)
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LONG_L ra, THREAD_REG31(\thread)
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.endm
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#endif /* _ASM_ASMMACRO_32_H */
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