um: extend fpstate to _xstate to support YMM registers
Extends fpstate to _xstate, in order to hold AVX/YMM registers.
To avoid oversized stack frame, the following functions have been
refactored by using malloc.
- sig_handler_common
- timer_real_alarm_handler
Signed-off-by: Eli Cooper <elicooper@gmx.com>
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index dac23ee..49e5036 100644
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -226,7 +226,7 @@
#endif
{
err = copy_from_user(regs->regs.fp, (void *)sc.fpstate,
- sizeof(struct user_i387_struct));
+ sizeof(struct _xstate));
if (err)
return 1;
}
@@ -234,7 +234,7 @@
}
static int copy_sc_to_user(struct sigcontext __user *to,
- struct _fpstate __user *to_fp, struct pt_regs *regs,
+ struct _xstate __user *to_fp, struct pt_regs *regs,
unsigned long mask)
{
struct sigcontext sc;
@@ -300,23 +300,22 @@
return 1;
}
- err = convert_fxsr_to_user(to_fp, &fpx);
+ err = convert_fxsr_to_user(&to_fp->fpstate, &fpx);
if (err)
return 1;
- err |= __put_user(fpx.swd, &to_fp->status);
- err |= __put_user(X86_FXSR_MAGIC, &to_fp->magic);
+ err |= __put_user(fpx.swd, &to_fp->fpstate.status);
+ err |= __put_user(X86_FXSR_MAGIC, &to_fp->fpstate.magic);
if (err)
return 1;
- if (copy_to_user(&to_fp->_fxsr_env[0], &fpx,
+ if (copy_to_user(&to_fp->fpstate._fxsr_env[0], &fpx,
sizeof(struct user_fxsr_struct)))
return 1;
} else
#endif
{
- if (copy_to_user(to_fp, regs->regs.fp,
- sizeof(struct user_i387_struct)))
+ if (copy_to_user(to_fp, regs->regs.fp, sizeof(struct _xstate)))
return 1;
}
@@ -325,7 +324,7 @@
#ifdef CONFIG_X86_32
static int copy_ucontext_to_user(struct ucontext __user *uc,
- struct _fpstate __user *fp, sigset_t *set,
+ struct _xstate __user *fp, sigset_t *set,
unsigned long sp)
{
int err = 0;
@@ -341,7 +340,7 @@
char __user *pretcode;
int sig;
struct sigcontext sc;
- struct _fpstate fpstate;
+ struct _xstate fpstate;
unsigned long extramask[_NSIG_WORDS-1];
char retcode[8];
};
@@ -354,7 +353,7 @@
void __user *puc;
struct siginfo info;
struct ucontext uc;
- struct _fpstate fpstate;
+ struct _xstate fpstate;
char retcode[8];
};
@@ -483,7 +482,7 @@
char __user *pretcode;
struct ucontext uc;
struct siginfo info;
- struct _fpstate fpstate;
+ struct _xstate fpstate;
};
int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig,