diff options
| author | Eli Cooper <elicooper@gmx.com> | 2016-03-19 19:58:40 +0300 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2016-05-22 00:37:40 +0300 |
| commit | b6024b21fec8367ef961a771cc9dde31f1831965 (patch) | |
| tree | 7cde8e93a769c29444d4327f7c4d3a9afe1b0ad7 /arch/x86 | |
| parent | 6de5a8a5001687df720b36729c799991cc0faff5 (diff) | |
| download | linux-b6024b21fec8367ef961a771cc9dde31f1831965.tar.xz | |
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')
| -rw-r--r-- | arch/x86/um/signal.c | 23 | ||||
| -rw-r--r-- | arch/x86/um/user-offsets.c | 2 |
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); |