[03/10] powerpc/signal: Add unsafe_copy_ck{fpr/vsx}_from_user
diff mbox series

Message ID 1040687aa27553d19f749f7fb48f0c07af98ee2d.1616151715.git.christophe.leroy@csgroup.eu
State Accepted
Commit 7c11f8893a76ac4e86c07f4b57371d5fa593627f
Headers show
Series
  • Convert signal32 to user read access by block
Related show

Commit Message

Christophe Leroy March 19, 2021, 11:06 a.m. UTC
Add unsafe_copy_ckfpr_from_user() and unsafe_copy_ckvsx_from_user()

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
 arch/powerpc/kernel/signal.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Patch
diff mbox series

diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h
index 1393876f3814..a5152ff3c52f 100644
--- a/arch/powerpc/kernel/signal.h
+++ b/arch/powerpc/kernel/signal.h
@@ -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)