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sh: Move over and enable FPU support for SH-5.

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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2007-11-19 19:13:38 +09:00
parent 061854fd15
commit 600ee240d1
5 changed files with 10 additions and 8 deletions
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1
arch/sh/Kconfig.sh64
View file

@ -83,6 +83,7 @@ choice
config CPU_SH5 config CPU_SH5
bool "SH-5" bool "SH-5"
select CPU_HAS_FPU
endchoice endchoice

1
arch/sh/kernel/cpu/sh5/Makefile
View file

@ -1,3 +1,4 @@
obj-y := entry.o switchto.o obj-y := entry.o switchto.o
obj-$(CONFIG_KALLSYMS) += unwind.o obj-$(CONFIG_KALLSYMS) += unwind.o
obj-$(CONFIG_SH_FPU) += fpu.o

4
arch/sh64/kernel/fpu.c → arch/sh/kernel/cpu/sh5/fpu.c
View file

@ -152,7 +152,7 @@ do_fpu_state_restore(unsigned long ex, struct pt_regs *regs)
if (last_task_used_math == current) if (last_task_used_math == current)
return; return;
grab_fpu(); enable_fpu();
if (last_task_used_math != NULL) { if (last_task_used_math != NULL) {
/* Other processes fpu state, save away */ /* Other processes fpu state, save away */
fpsave(&last_task_used_math->thread.fpu.hard); fpsave(&last_task_used_math->thread.fpu.hard);
@ -165,6 +165,6 @@ do_fpu_state_restore(unsigned long ex, struct pt_regs *regs)
fpload(&init_fpuregs.hard); fpload(&init_fpuregs.hard);
set_used_math(); set_used_math();
} }
release_fpu(); disable_fpu();
} }

8
arch/sh/kernel/process_64.c
View file

@ -469,9 +469,9 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
fpvalid = !!tsk_used_math(tsk); fpvalid = !!tsk_used_math(tsk);
if (fpvalid) { if (fpvalid) {
if (current == last_task_used_math) { if (current == last_task_used_math) {
grab_fpu(); enable_fpu();
fpsave(&tsk->thread.fpu.hard); fpsave(&tsk->thread.fpu.hard);
release_fpu(); disable_fpu();
last_task_used_math = 0; last_task_used_math = 0;
regs->sr |= SR_FD; regs->sr |= SR_FD;
} }
@ -496,9 +496,9 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
#ifdef CONFIG_SH_FPU #ifdef CONFIG_SH_FPU
if(last_task_used_math == current) { if(last_task_used_math == current) {
grab_fpu(); enable_fpu();
fpsave(&current->thread.fpu.hard); fpsave(&current->thread.fpu.hard);
release_fpu(); disable_fpu();
last_task_used_math = NULL; last_task_used_math = NULL;
regs->sr |= SR_FD; regs->sr |= SR_FD;
} }

4
arch/sh/kernel/signal_64.c
View file

@ -211,9 +211,9 @@ setup_sigcontext_fpu(struct pt_regs *regs, struct sigcontext __user *sc)
return err; return err;
if (current == last_task_used_math) { if (current == last_task_used_math) {
grab_fpu(); enable_fpu();
fpsave(&current->thread.fpu.hard); fpsave(&current->thread.fpu.hard);
release_fpu(); disable_fpu();
last_task_used_math = NULL; last_task_used_math = NULL;
regs->sr |= SR_FD; regs->sr |= SR_FD;
} }