From 02987633df7ba2f62967791dda816eb191d1add3 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Mon, 27 Jan 2014 15:23:08 +0000 Subject: MIPS: Don't assume 64-bit FP registers for context switch 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 Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6428/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/asmmacro-32.h | 128 ++++++++++++++++++------------------ 1 file changed, 64 insertions(+), 64 deletions(-) (limited to 'arch/mips/include/asm/asmmacro-32.h') diff --git a/arch/mips/include/asm/asmmacro-32.h b/arch/mips/include/asm/asmmacro-32.h index 70e1f176f123..e38c2811d4e2 100644 --- a/arch/mips/include/asm/asmmacro-32.h +++ b/arch/mips/include/asm/asmmacro-32.h @@ -14,75 +14,75 @@ .macro fpu_save_single thread tmp=t0 cfc1 \tmp, fcr31 - swc1 $f0, THREAD_FPR0(\thread) - swc1 $f1, THREAD_FPR1(\thread) - swc1 $f2, THREAD_FPR2(\thread) - swc1 $f3, THREAD_FPR3(\thread) - swc1 $f4, THREAD_FPR4(\thread) - swc1 $f5, THREAD_FPR5(\thread) - swc1 $f6, THREAD_FPR6(\thread) - swc1 $f7, THREAD_FPR7(\thread) - swc1 $f8, THREAD_FPR8(\thread) - swc1 $f9, THREAD_FPR9(\thread) - swc1 $f10, THREAD_FPR10(\thread) - swc1 $f11, THREAD_FPR11(\thread) - swc1 $f12, THREAD_FPR12(\thread) - swc1 $f13, THREAD_FPR13(\thread) - swc1 $f14, THREAD_FPR14(\thread) - swc1 $f15, THREAD_FPR15(\thread) - swc1 $f16, THREAD_FPR16(\thread) - swc1 $f17, THREAD_FPR17(\thread) - swc1 $f18, THREAD_FPR18(\thread) - swc1 $f19, THREAD_FPR19(\thread) - swc1 $f20, THREAD_FPR20(\thread) - swc1 $f21, THREAD_FPR21(\thread) - swc1 $f22, THREAD_FPR22(\thread) - swc1 $f23, THREAD_FPR23(\thread) - swc1 $f24, THREAD_FPR24(\thread) - swc1 $f25, THREAD_FPR25(\thread) - swc1 $f26, THREAD_FPR26(\thread) - swc1 $f27, THREAD_FPR27(\thread) - swc1 $f28, THREAD_FPR28(\thread) - swc1 $f29, THREAD_FPR29(\thread) - swc1 $f30, THREAD_FPR30(\thread) - swc1 $f31, THREAD_FPR31(\thread) + swc1 $f0, THREAD_FPR0_LS64(\thread) + swc1 $f1, THREAD_FPR1_LS64(\thread) + swc1 $f2, THREAD_FPR2_LS64(\thread) + swc1 $f3, THREAD_FPR3_LS64(\thread) + swc1 $f4, THREAD_FPR4_LS64(\thread) + swc1 $f5, THREAD_FPR5_LS64(\thread) + swc1 $f6, THREAD_FPR6_LS64(\thread) + swc1 $f7, THREAD_FPR7_LS64(\thread) + swc1 $f8, THREAD_FPR8_LS64(\thread) + swc1 $f9, THREAD_FPR9_LS64(\thread) + swc1 $f10, THREAD_FPR10_LS64(\thread) + swc1 $f11, THREAD_FPR11_LS64(\thread) + swc1 $f12, THREAD_FPR12_LS64(\thread) + swc1 $f13, THREAD_FPR13_LS64(\thread) + swc1 $f14, THREAD_FPR14_LS64(\thread) + swc1 $f15, THREAD_FPR15_LS64(\thread) + swc1 $f16, THREAD_FPR16_LS64(\thread) + swc1 $f17, THREAD_FPR17_LS64(\thread) + swc1 $f18, THREAD_FPR18_LS64(\thread) + swc1 $f19, THREAD_FPR19_LS64(\thread) + swc1 $f20, THREAD_FPR20_LS64(\thread) + swc1 $f21, THREAD_FPR21_LS64(\thread) + swc1 $f22, THREAD_FPR22_LS64(\thread) + swc1 $f23, THREAD_FPR23_LS64(\thread) + swc1 $f24, THREAD_FPR24_LS64(\thread) + swc1 $f25, THREAD_FPR25_LS64(\thread) + swc1 $f26, THREAD_FPR26_LS64(\thread) + swc1 $f27, THREAD_FPR27_LS64(\thread) + swc1 $f28, THREAD_FPR28_LS64(\thread) + swc1 $f29, THREAD_FPR29_LS64(\thread) + swc1 $f30, THREAD_FPR30_LS64(\thread) + swc1 $f31, THREAD_FPR31_LS64(\thread) sw \tmp, THREAD_FCR31(\thread) .endm .macro fpu_restore_single thread tmp=t0 lw \tmp, THREAD_FCR31(\thread) - lwc1 $f0, THREAD_FPR0(\thread) - lwc1 $f1, THREAD_FPR1(\thread) - lwc1 $f2, THREAD_FPR2(\thread) - lwc1 $f3, THREAD_FPR3(\thread) - lwc1 $f4, THREAD_FPR4(\thread) - lwc1 $f5, THREAD_FPR5(\thread) - lwc1 $f6, THREAD_FPR6(\thread) - lwc1 $f7, THREAD_FPR7(\thread) - lwc1 $f8, THREAD_FPR8(\thread) - lwc1 $f9, THREAD_FPR9(\thread) - lwc1 $f10, THREAD_FPR10(\thread) - lwc1 $f11, THREAD_FPR11(\thread) - lwc1 $f12, THREAD_FPR12(\thread) - lwc1 $f13, THREAD_FPR13(\thread) - lwc1 $f14, THREAD_FPR14(\thread) - lwc1 $f15, THREAD_FPR15(\thread) - lwc1 $f16, THREAD_FPR16(\thread) - lwc1 $f17, THREAD_FPR17(\thread) - lwc1 $f18, THREAD_FPR18(\thread) - lwc1 $f19, THREAD_FPR19(\thread) - lwc1 $f20, THREAD_FPR20(\thread) - lwc1 $f21, THREAD_FPR21(\thread) - lwc1 $f22, THREAD_FPR22(\thread) - lwc1 $f23, THREAD_FPR23(\thread) - lwc1 $f24, THREAD_FPR24(\thread) - lwc1 $f25, THREAD_FPR25(\thread) - lwc1 $f26, THREAD_FPR26(\thread) - lwc1 $f27, THREAD_FPR27(\thread) - lwc1 $f28, THREAD_FPR28(\thread) - lwc1 $f29, THREAD_FPR29(\thread) - lwc1 $f30, THREAD_FPR30(\thread) - lwc1 $f31, THREAD_FPR31(\thread) + lwc1 $f0, THREAD_FPR0_LS64(\thread) + lwc1 $f1, THREAD_FPR1_LS64(\thread) + lwc1 $f2, THREAD_FPR2_LS64(\thread) + lwc1 $f3, THREAD_FPR3_LS64(\thread) + lwc1 $f4, THREAD_FPR4_LS64(\thread) + lwc1 $f5, THREAD_FPR5_LS64(\thread) + lwc1 $f6, THREAD_FPR6_LS64(\thread) + lwc1 $f7, THREAD_FPR7_LS64(\thread) + lwc1 $f8, THREAD_FPR8_LS64(\thread) + lwc1 $f9, THREAD_FPR9_LS64(\thread) + lwc1 $f10, THREAD_FPR10_LS64(\thread) + lwc1 $f11, THREAD_FPR11_LS64(\thread) + lwc1 $f12, THREAD_FPR12_LS64(\thread) + lwc1 $f13, THREAD_FPR13_LS64(\thread) + lwc1 $f14, THREAD_FPR14_LS64(\thread) + lwc1 $f15, THREAD_FPR15_LS64(\thread) + lwc1 $f16, THREAD_FPR16_LS64(\thread) + lwc1 $f17, THREAD_FPR17_LS64(\thread) + lwc1 $f18, THREAD_FPR18_LS64(\thread) + lwc1 $f19, THREAD_FPR19_LS64(\thread) + lwc1 $f20, THREAD_FPR20_LS64(\thread) + lwc1 $f21, THREAD_FPR21_LS64(\thread) + lwc1 $f22, THREAD_FPR22_LS64(\thread) + lwc1 $f23, THREAD_FPR23_LS64(\thread) + lwc1 $f24, THREAD_FPR24_LS64(\thread) + lwc1 $f25, THREAD_FPR25_LS64(\thread) + lwc1 $f26, THREAD_FPR26_LS64(\thread) + lwc1 $f27, THREAD_FPR27_LS64(\thread) + lwc1 $f28, THREAD_FPR28_LS64(\thread) + lwc1 $f29, THREAD_FPR29_LS64(\thread) + lwc1 $f30, THREAD_FPR30_LS64(\thread) + lwc1 $f31, THREAD_FPR31_LS64(\thread) ctc1 \tmp, fcr31 .endm -- cgit v1.2.3