mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
c138e12f3a
> Without this fix, _save_fp() in 64-bit kernel is seriously broken. > > ffffffff8010bec0 <_save_fp>: > ffffffff8010bec0: 400d6000 mfc0 t1,c0_status > ffffffff8010bec4: 000c7140 sll t2,t0,0x5 > ffffffff8010bec8: 05c10011 bgez t2,ffffffff8010bf10 <_save_fp+0x50> > ffffffff8010becc: 00000000 nop > ffffffff8010bed0: f4810328 sdc1 $f1,808(a0) > ... Fix register usage in fpu_save_double() and make fpu_restore_double() more symmetric with fpu_save_double(). Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
159 lines
4.7 KiB
C
159 lines
4.7 KiB
C
/*
|
|
* asmmacro.h: Assembler macros to make things easier to read.
|
|
*
|
|
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
|
|
* Copyright (C) 1998, 1999, 2003 Ralf Baechle
|
|
*/
|
|
#ifndef _ASM_ASMMACRO_32_H
|
|
#define _ASM_ASMMACRO_32_H
|
|
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/regdef.h>
|
|
#include <asm/fpregdef.h>
|
|
#include <asm/mipsregs.h>
|
|
|
|
.macro fpu_save_double thread status tmp1=t0
|
|
cfc1 \tmp1, fcr31
|
|
sdc1 $f0, THREAD_FPR0(\thread)
|
|
sdc1 $f2, THREAD_FPR2(\thread)
|
|
sdc1 $f4, THREAD_FPR4(\thread)
|
|
sdc1 $f6, THREAD_FPR6(\thread)
|
|
sdc1 $f8, THREAD_FPR8(\thread)
|
|
sdc1 $f10, THREAD_FPR10(\thread)
|
|
sdc1 $f12, THREAD_FPR12(\thread)
|
|
sdc1 $f14, THREAD_FPR14(\thread)
|
|
sdc1 $f16, THREAD_FPR16(\thread)
|
|
sdc1 $f18, THREAD_FPR18(\thread)
|
|
sdc1 $f20, THREAD_FPR20(\thread)
|
|
sdc1 $f22, THREAD_FPR22(\thread)
|
|
sdc1 $f24, THREAD_FPR24(\thread)
|
|
sdc1 $f26, THREAD_FPR26(\thread)
|
|
sdc1 $f28, THREAD_FPR28(\thread)
|
|
sdc1 $f30, THREAD_FPR30(\thread)
|
|
sw \tmp1, THREAD_FCR31(\thread)
|
|
.endm
|
|
|
|
.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)
|
|
sw \tmp, THREAD_FCR31(\thread)
|
|
.endm
|
|
|
|
.macro fpu_restore_double thread status tmp=t0
|
|
lw \tmp, THREAD_FCR31(\thread)
|
|
ldc1 $f0, THREAD_FPR0(\thread)
|
|
ldc1 $f2, THREAD_FPR2(\thread)
|
|
ldc1 $f4, THREAD_FPR4(\thread)
|
|
ldc1 $f6, THREAD_FPR6(\thread)
|
|
ldc1 $f8, THREAD_FPR8(\thread)
|
|
ldc1 $f10, THREAD_FPR10(\thread)
|
|
ldc1 $f12, THREAD_FPR12(\thread)
|
|
ldc1 $f14, THREAD_FPR14(\thread)
|
|
ldc1 $f16, THREAD_FPR16(\thread)
|
|
ldc1 $f18, THREAD_FPR18(\thread)
|
|
ldc1 $f20, THREAD_FPR20(\thread)
|
|
ldc1 $f22, THREAD_FPR22(\thread)
|
|
ldc1 $f24, THREAD_FPR24(\thread)
|
|
ldc1 $f26, THREAD_FPR26(\thread)
|
|
ldc1 $f28, THREAD_FPR28(\thread)
|
|
ldc1 $f30, THREAD_FPR30(\thread)
|
|
ctc1 \tmp, fcr31
|
|
.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)
|
|
ctc1 \tmp, fcr31
|
|
.endm
|
|
|
|
.macro cpu_save_nonscratch thread
|
|
LONG_S s0, THREAD_REG16(\thread)
|
|
LONG_S s1, THREAD_REG17(\thread)
|
|
LONG_S s2, THREAD_REG18(\thread)
|
|
LONG_S s3, THREAD_REG19(\thread)
|
|
LONG_S s4, THREAD_REG20(\thread)
|
|
LONG_S s5, THREAD_REG21(\thread)
|
|
LONG_S s6, THREAD_REG22(\thread)
|
|
LONG_S s7, THREAD_REG23(\thread)
|
|
LONG_S sp, THREAD_REG29(\thread)
|
|
LONG_S fp, THREAD_REG30(\thread)
|
|
.endm
|
|
|
|
.macro cpu_restore_nonscratch thread
|
|
LONG_L s0, THREAD_REG16(\thread)
|
|
LONG_L s1, THREAD_REG17(\thread)
|
|
LONG_L s2, THREAD_REG18(\thread)
|
|
LONG_L s3, THREAD_REG19(\thread)
|
|
LONG_L s4, THREAD_REG20(\thread)
|
|
LONG_L s5, THREAD_REG21(\thread)
|
|
LONG_L s6, THREAD_REG22(\thread)
|
|
LONG_L s7, THREAD_REG23(\thread)
|
|
LONG_L sp, THREAD_REG29(\thread)
|
|
LONG_L fp, THREAD_REG30(\thread)
|
|
LONG_L ra, THREAD_REG31(\thread)
|
|
.endm
|
|
|
|
#endif /* _ASM_ASMMACRO_32_H */
|