02987633df
When saving or restoring scalar FP context we want to access the least significant 64 bits of each FP register. When the FP registers are 64 bits wide that is trivially the start of the registers value in memory. However when the FP registers are wider this equivalence will no longer be true for big endian systems. Define a new set of offset macros for the least significant 64 bits of each saved FP register within thread context, and make use of them when saving and restoring scalar FP context. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6428/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
117 lines
3.8 KiB
C
117 lines
3.8 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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cfc1 \tmp, fcr31
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swc1 $f0, THREAD_FPR0_LS64(\thread)
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swc1 $f1, THREAD_FPR1_LS64(\thread)
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swc1 $f2, THREAD_FPR2_LS64(\thread)
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swc1 $f3, THREAD_FPR3_LS64(\thread)
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swc1 $f4, THREAD_FPR4_LS64(\thread)
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swc1 $f5, THREAD_FPR5_LS64(\thread)
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swc1 $f6, THREAD_FPR6_LS64(\thread)
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swc1 $f7, THREAD_FPR7_LS64(\thread)
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swc1 $f8, THREAD_FPR8_LS64(\thread)
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swc1 $f9, THREAD_FPR9_LS64(\thread)
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swc1 $f10, THREAD_FPR10_LS64(\thread)
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swc1 $f11, THREAD_FPR11_LS64(\thread)
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swc1 $f12, THREAD_FPR12_LS64(\thread)
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swc1 $f13, THREAD_FPR13_LS64(\thread)
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swc1 $f14, THREAD_FPR14_LS64(\thread)
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swc1 $f15, THREAD_FPR15_LS64(\thread)
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swc1 $f16, THREAD_FPR16_LS64(\thread)
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swc1 $f17, THREAD_FPR17_LS64(\thread)
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swc1 $f18, THREAD_FPR18_LS64(\thread)
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swc1 $f19, THREAD_FPR19_LS64(\thread)
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swc1 $f20, THREAD_FPR20_LS64(\thread)
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swc1 $f21, THREAD_FPR21_LS64(\thread)
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swc1 $f22, THREAD_FPR22_LS64(\thread)
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swc1 $f23, THREAD_FPR23_LS64(\thread)
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swc1 $f24, THREAD_FPR24_LS64(\thread)
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swc1 $f25, THREAD_FPR25_LS64(\thread)
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swc1 $f26, THREAD_FPR26_LS64(\thread)
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swc1 $f27, THREAD_FPR27_LS64(\thread)
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swc1 $f28, THREAD_FPR28_LS64(\thread)
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swc1 $f29, THREAD_FPR29_LS64(\thread)
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swc1 $f30, THREAD_FPR30_LS64(\thread)
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swc1 $f31, THREAD_FPR31_LS64(\thread)
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sw \tmp, THREAD_FCR31(\thread)
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.endm
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.macro fpu_restore_single thread tmp=t0
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lw \tmp, THREAD_FCR31(\thread)
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lwc1 $f0, THREAD_FPR0_LS64(\thread)
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lwc1 $f1, THREAD_FPR1_LS64(\thread)
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lwc1 $f2, THREAD_FPR2_LS64(\thread)
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lwc1 $f3, THREAD_FPR3_LS64(\thread)
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lwc1 $f4, THREAD_FPR4_LS64(\thread)
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lwc1 $f5, THREAD_FPR5_LS64(\thread)
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lwc1 $f6, THREAD_FPR6_LS64(\thread)
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lwc1 $f7, THREAD_FPR7_LS64(\thread)
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lwc1 $f8, THREAD_FPR8_LS64(\thread)
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lwc1 $f9, THREAD_FPR9_LS64(\thread)
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lwc1 $f10, THREAD_FPR10_LS64(\thread)
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lwc1 $f11, THREAD_FPR11_LS64(\thread)
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lwc1 $f12, THREAD_FPR12_LS64(\thread)
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lwc1 $f13, THREAD_FPR13_LS64(\thread)
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lwc1 $f14, THREAD_FPR14_LS64(\thread)
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lwc1 $f15, THREAD_FPR15_LS64(\thread)
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lwc1 $f16, THREAD_FPR16_LS64(\thread)
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lwc1 $f17, THREAD_FPR17_LS64(\thread)
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lwc1 $f18, THREAD_FPR18_LS64(\thread)
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lwc1 $f19, THREAD_FPR19_LS64(\thread)
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lwc1 $f20, THREAD_FPR20_LS64(\thread)
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lwc1 $f21, THREAD_FPR21_LS64(\thread)
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lwc1 $f22, THREAD_FPR22_LS64(\thread)
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lwc1 $f23, THREAD_FPR23_LS64(\thread)
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lwc1 $f24, THREAD_FPR24_LS64(\thread)
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lwc1 $f25, THREAD_FPR25_LS64(\thread)
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lwc1 $f26, THREAD_FPR26_LS64(\thread)
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lwc1 $f27, THREAD_FPR27_LS64(\thread)
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lwc1 $f28, THREAD_FPR28_LS64(\thread)
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lwc1 $f29, THREAD_FPR29_LS64(\thread)
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lwc1 $f30, THREAD_FPR30_LS64(\thread)
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lwc1 $f31, THREAD_FPR31_LS64(\thread)
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ctc1 \tmp, fcr31
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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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