diff options
| author | Michael Neuling <mikey@neuling.org> | 2008-06-25 14:07:18 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-07-01 11:28:45 +1000 |
| commit | 6f3d8e6947ec98e358514fc0f7b2e37fe88a21bb (patch) | |
| tree | b91f2832c61b80bce0137473f6dca6e7df36b7d8 /arch/powerpc/kernel | |
| parent | 10e343925ab5d9f6c651ad808f2e413e3cc053b3 (diff) | |
| download | blackbird-op-linux-6f3d8e6947ec98e358514fc0f7b2e37fe88a21bb.tar.gz blackbird-op-linux-6f3d8e6947ec98e358514fc0f7b2e37fe88a21bb.zip | |
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>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/fpu.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_32.S | 6 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 6 |
4 files changed, 16 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S index 821e152e093c..8a2b3d62b9b8 100644 --- a/arch/powerpc/kernel/fpu.S +++ b/arch/powerpc/kernel/fpu.S @@ -85,7 +85,7 @@ _GLOBAL(load_up_fpu) #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 785af9b56591..99ee2f0f0f2b 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -421,8 +421,10 @@ BEGIN_FTR_SECTION 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 dd9e6595cae5..64433731d995 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -741,7 +741,8 @@ fp_unavailable_common: 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 @@ altivec_unavailable_common: 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 @@ _STATIC(load_up_altivec) 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 505494f1ee7c..b0461be1c928 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -376,8 +376,10 @@ label: #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__ |
