Commit 7c11f889 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/signal: Add unsafe_copy_ck{fpr/vsx}_from_user 



Add unsafe_copy_ckfpr_from_user() and unsafe_copy_ckvsx_from_user()

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1040687aa27553d19f749f7fb48f0c07af98ee2d.1616151715.git.christophe.leroy@csgroup.eu
parent c1cc1570

arch/powerpc/kernel/signal.h

+20 −0
Original line number Diff line number Diff line
@@ -100,6 +100,26 @@ unsigned long copy_ckfpr_from_user(struct task_struct *task, void __user *from); 
		unsafe_put_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \

				&buf[i], label);\

} while (0)



#define unsafe_copy_ckfpr_from_user(task, from, label)	do {		\

	struct task_struct *__t = task;					\

	u64 __user *buf = (u64 __user *)from;				\

	int i;								\

									\

	for (i = 0; i < ELF_NFPREG - 1 ; i++)				\

		unsafe_get_user(__t->thread.TS_CKFPR(i), &buf[i], label);\

	unsafe_get_user(__t->thread.ckfp_state.fpscr, &buf[i], failed);	\

} while (0)



#define unsafe_copy_ckvsx_from_user(task, from, label)	do {		\

	struct task_struct *__t = task;					\

	u64 __user *buf = (u64 __user *)from;				\

	int i;								\

									\

	for (i = 0; i < ELF_NVSRHALFREG ; i++)				\

		unsafe_get_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \

				&buf[i], label);			\

} while (0)

#endif

#elif defined(CONFIG_PPC_FPU_REGS)