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-rw-r--r--arch/mips/kernel/r4k_switch.S13
-rw-r--r--include/asm-mips/asmmacro-32.h4
-rw-r--r--include/asm-mips/asmmacro-64.h19
3 files changed, 19 insertions, 17 deletions
diff --git a/arch/mips/kernel/r4k_switch.S b/arch/mips/kernel/r4k_switch.S
index 0b1b54a..db94e55 100644
--- a/arch/mips/kernel/r4k_switch.S
+++ b/arch/mips/kernel/r4k_switch.S
@@ -75,8 +75,8 @@
and t0, t0, t1
LONG_S t0, ST_OFF(t3)
- fpu_save_double a0 t1 t0 t2 # c0_status passed in t1
- # clobbers t0 and t2
+ fpu_save_double a0 t0 t1 # c0_status passed in t0
+ # clobbers t1
1:
/*
@@ -129,9 +129,9 @@
*/
LEAF(_save_fp)
#ifdef CONFIG_64BIT
- mfc0 t1, CP0_STATUS
+ mfc0 t0, CP0_STATUS
#endif
- fpu_save_double a0 t1 t0 t2 # clobbers t1
+ fpu_save_double a0 t0 t1 # clobbers t1
jr ra
END(_save_fp)
@@ -139,7 +139,10 @@ LEAF(_save_fp)
* Restore a thread's fp context.
*/
LEAF(_restore_fp)
- fpu_restore_double a0, t1 # clobbers t1
+#ifdef CONFIG_64BIT
+ mfc0 t0, CP0_STATUS
+#endif
+ fpu_restore_double a0 t0 t1 # clobbers t1
jr ra
END(_restore_fp)
diff --git a/include/asm-mips/asmmacro-32.h b/include/asm-mips/asmmacro-32.h
index 11daf5c..5de3963 100644
--- a/include/asm-mips/asmmacro-32.h
+++ b/include/asm-mips/asmmacro-32.h
@@ -12,7 +12,7 @@
#include <asm/fpregdef.h>
#include <asm/mipsregs.h>
- .macro fpu_save_double thread status tmp1=t0 tmp2
+ .macro fpu_save_double thread status tmp1=t0
cfc1 \tmp1, fcr31
sdc1 $f0, THREAD_FPR0(\thread)
sdc1 $f2, THREAD_FPR2(\thread)
@@ -70,7 +70,7 @@
sw \tmp, THREAD_FCR31(\thread)
.endm
- .macro fpu_restore_double thread tmp=t0
+ .macro fpu_restore_double thread status tmp=t0
lw \tmp, THREAD_FCR31(\thread)
ldc1 $f0, THREAD_FPR0(\thread)
ldc1 $f2, THREAD_FPR2(\thread)
diff --git a/include/asm-mips/asmmacro-64.h b/include/asm-mips/asmmacro-64.h
index 559c355..225feef 100644
--- a/include/asm-mips/asmmacro-64.h
+++ b/include/asm-mips/asmmacro-64.h
@@ -53,12 +53,12 @@
sdc1 $f31, THREAD_FPR31(\thread)
.endm
- .macro fpu_save_double thread status tmp1 tmp2
- sll \tmp2, \tmp1, 5
- bgez \tmp2, 2f
+ .macro fpu_save_double thread status tmp
+ sll \tmp, \status, 5
+ bgez \tmp, 2f
fpu_save_16odd \thread
2:
- fpu_save_16even \thread \tmp1 # clobbers t1
+ fpu_save_16even \thread \tmp
.endm
.macro fpu_restore_16even thread tmp=t0
@@ -101,13 +101,12 @@
ldc1 $f31, THREAD_FPR31(\thread)
.endm
- .macro fpu_restore_double thread tmp
- mfc0 t0, CP0_STATUS
- sll t1, t0, 5
- bgez t1, 1f # 16 register mode?
+ .macro fpu_restore_double thread status tmp
+ sll \tmp, \status, 5
+ bgez \tmp, 1f # 16 register mode?
- fpu_restore_16odd a0
-1: fpu_restore_16even a0, t0 # clobbers t0
+ fpu_restore_16odd \thread
+1: fpu_restore_16even \thread \tmp
.endm
.macro cpu_save_nonscratch thread
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