[LOCAL] arm64/ptrace: Add compat FPR register support

From aarch32 ptrace view, fpr register support is done with vfp
registers. As like aarch32 ptrace view, Add to suppot compat fpr
resister with vfp.

Change-Id: Iac60d4fe53182b901b3cc7956695fced00018487
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>

diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h
index d6dd9fdbc3bee63b5f972ae71f7e31604af992d2..fefd8a8851189aa5f10f3dd9a413a790fda0ebc0 100644 (file)
--- a/arch/arm64/include/asm/ptrace.h
+++ b/arch/arm64/include/asm/ptrace.h
@@ -28,6 +28,8 @@
 /* AArch32-specific ptrace requests */
 #define COMPAT_PTRACE_GETREGS          12
 #define COMPAT_PTRACE_SETREGS          13
+#define COMPAT_PTRACE_GETFPREGS                14
+#define COMPAT_PTRACE_SETFPREGS                15
 #define COMPAT_PTRACE_GET_THREAD_AREA  22
 #define COMPAT_PTRACE_SET_SYSCALL      23
 #define COMPAT_PTRACE_GETVFPREGS       27

diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index 3eb848865d93cc4935dc4ce13429e78b3071ab57..adee9047d31c25512335c4792ba8fd981a54c7b6 100644 (file)
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -1171,6 +1171,22 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
                                                    datap);
                        break;
 
+               case COMPAT_PTRACE_GETFPREGS:
+                       ret = copy_regset_to_user(child,
+                                                 &user_aarch32_ptrace_view,
+                                                 REGSET_FPR,
+                                                 0, VFP_STATE_SIZE,
+                                                 datap);
+                       break;
+
+               case COMPAT_PTRACE_SETFPREGS:
+                       ret = copy_regset_from_user(child,
+                                                   &user_aarch32_ptrace_view,
+                                                   REGSET_FPR,
+                                                   0, VFP_STATE_SIZE,
+                                                   datap);
+                       break;
+
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
                case COMPAT_PTRACE_GETHBPREGS:
                        ret = compat_ptrace_gethbpregs(child, addr, datap);