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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 17:35:17 +07:00
842dfc11ea
Starting with version 2.24.51.20140728 MIPS binutils complain loudly
about mixing soft-float and hard-float object files, leading to this
build failure since GCC is invoked with "-msoft-float" on MIPS:
{standard input}: Warning: .gnu_attribute 4,3 requires `softfloat'
LD arch/mips/alchemy/common/built-in.o
mipsel-softfloat-linux-gnu-ld: Warning: arch/mips/alchemy/common/built-in.o
uses -msoft-float (set by arch/mips/alchemy/common/prom.o),
arch/mips/alchemy/common/sleeper.o uses -mhard-float
To fix this, we detect if GAS is new enough to support "-msoft-float" command
option, and if it does, we can let GCC pass it to GAS; but then we also need
to sprinkle the files which make use of floating point registers with the
necessary ".set hardfloat" directives.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: Markos Chandras <Markos.Chandras@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/8355/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
123 lines
3.8 KiB
C
123 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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.set push
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SET_HARDFLOAT
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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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.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_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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.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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