diff options
| author | David S. Miller <davem@davemloft.net> | 2008-07-18 02:39:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-07-18 02:39:39 -0700 |
| commit | 49997d75152b3d23c53b0fa730599f2f74c92c65 (patch) | |
| tree | 46e93126170d02cfec9505172e545732c1b69656 /arch/powerpc/kernel/fpu.S | |
| parent | a0c80b80e0fb48129e4e9d6a9ede914f9ff1850d (diff) | |
| parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/powerpc/booting-without-of.txt
drivers/atm/Makefile
drivers/net/fs_enet/fs_enet-main.c
drivers/pci/pci-acpi.c
net/8021q/vlan.c
net/iucv/iucv.c
Diffstat (limited to 'arch/powerpc/kernel/fpu.S')
| -rw-r--r-- | arch/powerpc/kernel/fpu.S | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S index 821e152e093..a088c064ae4 100644 --- a/arch/powerpc/kernel/fpu.S +++ b/arch/powerpc/kernel/fpu.S @@ -24,6 +24,29 @@ #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> +#ifdef CONFIG_VSX +#define REST_32FPVSRS(n,c,base) \ +BEGIN_FTR_SECTION \ + b 2f; \ +END_FTR_SECTION_IFSET(CPU_FTR_VSX); \ + REST_32FPRS(n,base); \ + b 3f; \ +2: REST_32VSRS(n,c,base); \ +3: + +#define SAVE_32FPVSRS(n,c,base) \ +BEGIN_FTR_SECTION \ + b 2f; \ +END_FTR_SECTION_IFSET(CPU_FTR_VSX); \ + SAVE_32FPRS(n,base); \ + b 3f; \ +2: SAVE_32VSRS(n,c,base); \ +3: +#else +#define REST_32FPVSRS(n,b,base) REST_32FPRS(n, base) +#define SAVE_32FPVSRS(n,b,base) SAVE_32FPRS(n, base) +#endif + /* * This task wants to use the FPU now. * On UP, disable FP for the task which had the FPU previously, @@ -34,6 +57,11 @@ _GLOBAL(load_up_fpu) mfmsr r5 ori r5,r5,MSR_FP +#ifdef CONFIG_VSX +BEGIN_FTR_SECTION + oris r5,r5,MSR_VSX@h +END_FTR_SECTION_IFSET(CPU_FTR_VSX) +#endif SYNC MTMSRD(r5) /* enable use of fpu now */ isync @@ -50,7 +78,7 @@ _GLOBAL(load_up_fpu) beq 1f toreal(r4) addi r4,r4,THREAD /* want last_task_used_math->thread */ - SAVE_32FPRS(0, r4) + SAVE_32FPVSRS(0, r5, r4) mffs fr0 stfd fr0,THREAD_FPSCR(r4) PPC_LL r5,PT_REGS(r4) @@ -77,7 +105,7 @@ _GLOBAL(load_up_fpu) #endif lfd fr0,THREAD_FPSCR(r5) MTFSF_L(fr0) - REST_32FPRS(0, r5) + REST_32FPVSRS(0, r4, r5) #ifndef CONFIG_SMP subi r4,r5,THREAD fromreal(r4) @@ -85,7 +113,7 @@ _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) @@ -96,6 +124,11 @@ _GLOBAL(load_up_fpu) _GLOBAL(giveup_fpu) mfmsr r5 ori r5,r5,MSR_FP +#ifdef CONFIG_VSX +BEGIN_FTR_SECTION + oris r5,r5,MSR_VSX@h +END_FTR_SECTION_IFSET(CPU_FTR_VSX) +#endif SYNC_601 ISYNC_601 MTMSRD(r5) /* enable use of fpu now */ @@ -106,7 +139,7 @@ _GLOBAL(giveup_fpu) addi r3,r3,THREAD /* want THREAD of task */ PPC_LL r5,PT_REGS(r3) PPC_LCMPI 0,r5,0 - SAVE_32FPRS(0, r3) + SAVE_32FPVSRS(0, r4 ,r3) mffs fr0 stfd fr0,THREAD_FPSCR(r3) beq 1f |