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authorEli Cooper <elicooper@gmx.com>2016-03-20 00:58:40 +0800
committerRichard Weinberger <richard@nod.at>2016-05-21 23:37:40 +0200
commitb6024b21fec8367ef961a771cc9dde31f1831965 (patch)
tree7cde8e93a769c29444d4327f7c4d3a9afe1b0ad7 /arch/x86/um
parent6de5a8a5001687df720b36729c799991cc0faff5 (diff)
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>
Diffstat (limited to 'arch/x86/um')
-rw-r--r--arch/x86/um/signal.c23
-rw-r--r--arch/x86/um/user-offsets.c2
2 files changed, 12 insertions, 13 deletions
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index dac23ee4e5a1..49e503697022 100644
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -226,7 +226,7 @@ static int copy_sc_from_user(struct pt_regs *regs,
#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_from_user(struct pt_regs *regs,
}
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 @@ static int copy_sc_to_user(struct sigcontext __user *to,
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 @@ static int copy_sc_to_user(struct sigcontext __user *to,
#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 @@ struct sigframe
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 @@ struct rt_sigframe
void __user *puc;
struct siginfo info;
struct ucontext uc;
- struct _fpstate fpstate;
+ struct _xstate fpstate;
char retcode[8];
};
@@ -483,7 +482,7 @@ struct rt_sigframe
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,
diff --git a/arch/x86/um/user-offsets.c b/arch/x86/um/user-offsets.c
index 470564bbd08e..cb3c22370cf5 100644
--- a/arch/x86/um/user-offsets.c
+++ b/arch/x86/um/user-offsets.c
@@ -50,7 +50,7 @@ void foo(void)
DEFINE(HOST_GS, GS);
DEFINE(HOST_ORIG_AX, ORIG_EAX);
#else
- DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
+ DEFINE(HOST_FP_SIZE, sizeof(struct _xstate) / sizeof(unsigned long));
DEFINE_LONGS(HOST_BX, RBX);
DEFINE_LONGS(HOST_CX, RCX);
DEFINE_LONGS(HOST_DI, RDI);