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-rw-r--r--arch/powerpc/kernel/ptrace.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 72da7dc924f1..9c0e405dc4cd 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -681,6 +681,21 @@ static int vsr_active(struct task_struct *target,
return target->thread.used_vsr ? regset->n : 0;
}
+/*
+ * When the transaction is active, 'transact_fp' holds the current running
+ * value of all FPR registers and 'fp_state' holds the last checkpointed
+ * value of all FPR registers for the current transaction. When transaction
+ * is not active 'fp_state' holds the current running state of all the FPR
+ * registers. So this function which returns the current running values of
+ * all the FPR registers, needs to know whether any transaction is active
+ * or not.
+ *
+ * Userspace interface buffer layout:
+ *
+ * struct data {
+ * u64 vsx[32];
+ * };
+ */
static int vsr_get(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
@@ -688,16 +703,47 @@ static int vsr_get(struct task_struct *target, const struct user_regset *regset,
u64 buf[32];
int ret, i;
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ flush_fp_to_thread(target);
+ flush_altivec_to_thread(target);
+ flush_tmregs_to_thread(target);
+#endif
flush_vsx_to_thread(target);
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ if (MSR_TM_ACTIVE(target->thread.regs->msr)) {
+ for (i = 0; i < 32 ; i++)
+ buf[i] = target->thread.
+ transact_fp.fpr[i][TS_VSRLOWOFFSET];
+ } else {
+ for (i = 0; i < 32 ; i++)
+ buf[i] = target->thread.
+ fp_state.fpr[i][TS_VSRLOWOFFSET];
+ }
+#else
for (i = 0; i < 32 ; i++)
buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET];
+#endif
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
buf, 0, 32 * sizeof(double));
return ret;
}
+/*
+ * When the transaction is active, 'transact_fp' holds the current running
+ * value of all FPR registers and 'fp_state' holds the last checkpointed
+ * value of all FPR registers for the current transaction. When transaction
+ * is not active 'fp_state' holds the current running state of all the FPR
+ * registers. So this function which sets the current running values of all
+ * the FPR registers, needs to know whether any transaction is active or not.
+ *
+ * Userspace interface buffer layout:
+ *
+ * struct data {
+ * u64 vsx[32];
+ * };
+ */
static int vsr_set(struct task_struct *target, const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
@@ -705,12 +751,30 @@ static int vsr_set(struct task_struct *target, const struct user_regset *regset,
u64 buf[32];
int ret,i;
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ flush_fp_to_thread(target);
+ flush_altivec_to_thread(target);
+ flush_tmregs_to_thread(target);
+#endif
flush_vsx_to_thread(target);
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
buf, 0, 32 * sizeof(double));
+
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ if (MSR_TM_ACTIVE(target->thread.regs->msr)) {
+ for (i = 0; i < 32 ; i++)
+ target->thread.transact_fp.
+ fpr[i][TS_VSRLOWOFFSET] = buf[i];
+ } else {
+ for (i = 0; i < 32 ; i++)
+ target->thread.fp_state.
+ fpr[i][TS_VSRLOWOFFSET] = buf[i];
+ }
+#else
for (i = 0; i < 32 ; i++)
target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i];
+#endif
return ret;