diff options
Diffstat (limited to 'arch/powerpc/kernel/ptrace.c')
| -rw-r--r-- | arch/powerpc/kernel/ptrace.c | 64 |
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; |