diff options
Diffstat (limited to 'arch/powerpc/kernel/signal.c')
-rw-r--r-- | arch/powerpc/kernel/signal.c | 144 |
1 files changed, 142 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c index d215f9554553..a264989626fd 100644 --- a/arch/powerpc/kernel/signal.c +++ b/arch/powerpc/kernel/signal.c @@ -18,12 +18,153 @@ #include <linux/syscalls.h> #include <asm/hw_breakpoint.h> #include <linux/uaccess.h> +#include <asm/switch_to.h> #include <asm/unistd.h> #include <asm/debug.h> #include <asm/tm.h> #include "signal.h" +#ifdef CONFIG_VSX +unsigned long copy_fpr_to_user(void __user *to, + struct task_struct *task) +{ + u64 buf[ELF_NFPREG]; + int i; + + /* save FPR copy to local buffer then write to the thread_struct */ + for (i = 0; i < (ELF_NFPREG - 1) ; i++) + buf[i] = task->thread.TS_FPR(i); + buf[i] = task->thread.fp_state.fpscr; + return __copy_to_user(to, buf, ELF_NFPREG * sizeof(double)); +} + +unsigned long copy_fpr_from_user(struct task_struct *task, + void __user *from) +{ + u64 buf[ELF_NFPREG]; + int i; + + if (__copy_from_user(buf, from, ELF_NFPREG * sizeof(double))) + return 1; + for (i = 0; i < (ELF_NFPREG - 1) ; i++) + task->thread.TS_FPR(i) = buf[i]; + task->thread.fp_state.fpscr = buf[i]; + + return 0; +} + +unsigned long copy_vsx_to_user(void __user *to, + struct task_struct *task) +{ + u64 buf[ELF_NVSRHALFREG]; + int i; + + /* save FPR copy to local buffer then write to the thread_struct */ + for (i = 0; i < ELF_NVSRHALFREG; i++) + buf[i] = task->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; + return __copy_to_user(to, buf, ELF_NVSRHALFREG * sizeof(double)); +} + +unsigned long copy_vsx_from_user(struct task_struct *task, + void __user *from) +{ + u64 buf[ELF_NVSRHALFREG]; + int i; + + if (__copy_from_user(buf, from, ELF_NVSRHALFREG * sizeof(double))) + return 1; + for (i = 0; i < ELF_NVSRHALFREG ; i++) + task->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i]; + return 0; +} + +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +unsigned long copy_ckfpr_to_user(void __user *to, + struct task_struct *task) +{ + u64 buf[ELF_NFPREG]; + int i; + + /* save FPR copy to local buffer then write to the thread_struct */ + for (i = 0; i < (ELF_NFPREG - 1) ; i++) + buf[i] = task->thread.TS_CKFPR(i); + buf[i] = task->thread.ckfp_state.fpscr; + return __copy_to_user(to, buf, ELF_NFPREG * sizeof(double)); +} + +unsigned long copy_ckfpr_from_user(struct task_struct *task, + void __user *from) +{ + u64 buf[ELF_NFPREG]; + int i; + + if (__copy_from_user(buf, from, ELF_NFPREG * sizeof(double))) + return 1; + for (i = 0; i < (ELF_NFPREG - 1) ; i++) + task->thread.TS_CKFPR(i) = buf[i]; + task->thread.ckfp_state.fpscr = buf[i]; + + return 0; +} + +unsigned long copy_ckvsx_to_user(void __user *to, + struct task_struct *task) +{ + u64 buf[ELF_NVSRHALFREG]; + int i; + + /* save FPR copy to local buffer then write to the thread_struct */ + for (i = 0; i < ELF_NVSRHALFREG; i++) + buf[i] = task->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET]; + return __copy_to_user(to, buf, ELF_NVSRHALFREG * sizeof(double)); +} + +unsigned long copy_ckvsx_from_user(struct task_struct *task, + void __user *from) +{ + u64 buf[ELF_NVSRHALFREG]; + int i; + + if (__copy_from_user(buf, from, ELF_NVSRHALFREG * sizeof(double))) + return 1; + for (i = 0; i < ELF_NVSRHALFREG ; i++) + task->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i]; + return 0; +} +#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ +#else +inline unsigned long copy_fpr_to_user(void __user *to, + struct task_struct *task) +{ + return __copy_to_user(to, task->thread.fp_state.fpr, + ELF_NFPREG * sizeof(double)); +} + +inline unsigned long copy_fpr_from_user(struct task_struct *task, + void __user *from) +{ + return __copy_from_user(task->thread.fp_state.fpr, from, + ELF_NFPREG * sizeof(double)); +} + +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +inline unsigned long copy_ckfpr_to_user(void __user *to, + struct task_struct *task) +{ + return __copy_to_user(to, task->thread.ckfp_state.fpr, + ELF_NFPREG * sizeof(double)); +} + +inline unsigned long copy_ckfpr_from_user(struct task_struct *task, + void __user *from) +{ + return __copy_from_user(task->thread.ckfp_state.fpr, from, + ELF_NFPREG * sizeof(double)); +} +#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ +#endif + /* Log an error when sending an unhandled signal to a process. Controlled * through debug.exception-trace sysctl. */ @@ -106,7 +247,6 @@ static void do_signal(struct task_struct *tsk) sigset_t *oldset = sigmask_to_save(); struct ksignal ksig = { .sig = 0 }; int ret; - int is32 = is_32bit_task(); BUG_ON(tsk != current); @@ -136,7 +276,7 @@ static void do_signal(struct task_struct *tsk) rseq_signal_deliver(&ksig, tsk->thread.regs); - if (is32) { + if (is_32bit_task()) { if (ksig.ka.sa.sa_flags & SA_SIGINFO) ret = handle_rt_signal32(&ksig, oldset, tsk); else |