Commit 256b22ca authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: Have SH-5 provide an {en,dis}able_fpu() impl.


Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 27a511c6
......@@ -74,9 +74,9 @@ get_fpu_long(struct task_struct *task, unsigned long addr)
}
if (last_task_used_math == task) {
grab_fpu();
enable_fpu();
fpsave(&task->thread.fpu.hard);
release_fpu();
disable_fpu();
last_task_used_math = 0;
regs->sr |= SR_FD;
}
......@@ -110,9 +110,9 @@ put_fpu_long(struct task_struct *task, unsigned long addr, unsigned long data)
fpinit(&task->thread.fpu.hard);
set_stopped_child_used_math(task);
} else if (last_task_used_math == task) {
grab_fpu();
enable_fpu();
fpsave(&task->thread.fpu.hard);
release_fpu();
disable_fpu();
last_task_used_math = 0;
regs->sr |= SR_FD;
}
......
......@@ -617,9 +617,9 @@ static int misaligned_fpu_load(struct pt_regs *regs,
context switch the registers into memory so they can be
indexed by register number. */
if (last_task_used_math == current) {
grab_fpu();
enable_fpu();
fpsave(&current->thread.fpu.hard);
release_fpu();
disable_fpu();
last_task_used_math = NULL;
regs->sr |= SR_FD;
}
......@@ -690,9 +690,9 @@ static int misaligned_fpu_store(struct pt_regs *regs,
context switch the registers into memory so they can be
indexed by register number. */
if (last_task_used_math == current) {
grab_fpu();
enable_fpu();
fpsave(&current->thread.fpu.hard);
release_fpu();
disable_fpu();
last_task_used_math = NULL;
regs->sr |= SR_FD;
}
......
......@@ -18,6 +18,7 @@
#include <asm/page.h>
#include <asm/types.h>
#include <asm/cache.h>
#include <asm/ptrace.h>
#include <asm/cpu/registers.h>
/*
......@@ -218,7 +219,7 @@ extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
* FPU lazy state save handling.
*/
static inline void release_fpu(void)
static inline void disable_fpu(void)
{
unsigned long long __dummy;
......@@ -230,7 +231,7 @@ static inline void release_fpu(void)
: "r" (SR_FD));
}
static inline void grab_fpu(void)
static inline void enable_fpu(void)
{
unsigned long long __dummy;
......@@ -242,6 +243,16 @@ static inline void grab_fpu(void)
: "r" (~SR_FD));
}
static inline void release_fpu(struct pt_regs *regs)
{
regs->sr |= SR_FD;
}
static inline void grab_fpu(struct pt_regs *regs)
{
regs->sr &= ~SR_FD;
}
/* Round to nearest, no exceptions on inexact, overflow, underflow,
zero-divide, invalid. Configure option for whether to flush denorms to
zero, or except if a denorm is encountered. */
......
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