powerpc: Make load_up_fpu and load_up_altivec callable
Make load_up_fpu and load_up_altivec callable so they can be reused by
the VSX code.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S
index 821e152..8a2b3d6 100644
--- a/arch/powerpc/kernel/fpu.S
+++ b/arch/powerpc/kernel/fpu.S
@@ -85,7 +85,7 @@
#endif /* CONFIG_SMP */
/* restore registers and return */
/* we haven't used ctr or xer or lr */
- b fast_exception_return
+ blr
/*
* giveup_fpu(tsk)
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 785af9b..99ee2f0 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -421,8 +421,10 @@
b ProgramCheck
END_FTR_SECTION_IFSET(CPU_FTR_FPU_UNAVAILABLE)
EXCEPTION_PROLOG
- bne load_up_fpu /* if from user, just load it up */
- addi r3,r1,STACK_FRAME_OVERHEAD
+ beq 1f
+ bl load_up_fpu /* if from user, just load it up */
+ b fast_exception_return
+1: addi r3,r1,STACK_FRAME_OVERHEAD
EXC_XFER_EE_LITE(0x800, kernel_fp_unavailable_exception)
/* Decrementer */
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index dd9e659..6443373 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -741,7 +741,8 @@
ENABLE_INTS
bl .kernel_fp_unavailable_exception
BUG_OPCODE
-1: b .load_up_fpu
+1: bl .load_up_fpu
+ b fast_exception_return
.align 7
.globl altivec_unavailable_common
@@ -749,7 +750,10 @@
EXCEPTION_PROLOG_COMMON(0xf20, PACA_EXGEN)
#ifdef CONFIG_ALTIVEC
BEGIN_FTR_SECTION
- bne .load_up_altivec /* if from user, just load it up */
+ beq 1f
+ bl .load_up_altivec
+ b fast_exception_return
+1:
END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
#endif
bl .save_nvgprs
@@ -829,7 +833,7 @@
std r4,0(r3)
#endif /* CONFIG_SMP */
/* restore registers and return */
- b fast_exception_return
+ blr
#endif /* CONFIG_ALTIVEC */
/*
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
index 505494f..b0461be 100644
--- a/arch/powerpc/kernel/head_booke.h
+++ b/arch/powerpc/kernel/head_booke.h
@@ -376,8 +376,10 @@
#define FP_UNAVAILABLE_EXCEPTION \
START_EXCEPTION(FloatingPointUnavailable) \
NORMAL_EXCEPTION_PROLOG; \
- bne load_up_fpu; /* if from user, just load it up */ \
- addi r3,r1,STACK_FRAME_OVERHEAD; \
+ beq 1f; \
+ bl load_up_fpu; /* if from user, just load it up */ \
+ b fast_exception_return; \
+1: addi r3,r1,STACK_FRAME_OVERHEAD; \
EXC_XFER_EE_LITE(0x800, kernel_fp_unavailable_exception)
#ifndef __ASSEMBLY__
