diff options
Diffstat (limited to 'arch/s390/kernel/ptrace.c')
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 52 |
1 files changed, 19 insertions, 33 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 8b1c8e33f184..01c37b36caf9 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -239,12 +239,12 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr) * or the child->thread.fpu.vxrs array */ offset = addr - (addr_t) &dummy->regs.fp_regs.fprs; - if (is_vx_task(child)) + if (MACHINE_HAS_VX) tmp = *(addr_t *) ((addr_t) child->thread.fpu.vxrs + 2*offset); else tmp = *(addr_t *) - ((addr_t) &child->thread.fpu.fprs + offset); + ((addr_t) child->thread.fpu.fprs + offset); } else if (addr < (addr_t) (&dummy->regs.per_info + 1)) { /* @@ -383,12 +383,12 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data) * or the child->thread.fpu.vxrs array */ offset = addr - (addr_t) &dummy->regs.fp_regs.fprs; - if (is_vx_task(child)) + if (MACHINE_HAS_VX) *(addr_t *)((addr_t) child->thread.fpu.vxrs + 2*offset) = data; else *(addr_t *)((addr_t) - &child->thread.fpu.fprs + offset) = data; + child->thread.fpu.fprs + offset) = data; } else if (addr < (addr_t) (&dummy->regs.per_info + 1)) { /* @@ -617,12 +617,12 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr) * or the child->thread.fpu.vxrs array */ offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs; - if (is_vx_task(child)) + if (MACHINE_HAS_VX) tmp = *(__u32 *) ((addr_t) child->thread.fpu.vxrs + 2*offset); else tmp = *(__u32 *) - ((addr_t) &child->thread.fpu.fprs + offset); + ((addr_t) child->thread.fpu.fprs + offset); } else if (addr < (addr_t) (&dummy32->regs.per_info + 1)) { /* @@ -742,12 +742,12 @@ static int __poke_user_compat(struct task_struct *child, * or the child->thread.fpu.vxrs array */ offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs; - if (is_vx_task(child)) + if (MACHINE_HAS_VX) *(__u32 *)((addr_t) child->thread.fpu.vxrs + 2*offset) = tmp; else *(__u32 *)((addr_t) - &child->thread.fpu.fprs + offset) = tmp; + child->thread.fpu.fprs + offset) = tmp; } else if (addr < (addr_t) (&dummy32->regs.per_info + 1)) { /* @@ -981,7 +981,7 @@ static int s390_fpregs_set(struct task_struct *target, if (rc) return rc; - if (is_vx_task(target)) + if (MACHINE_HAS_VX) convert_fp_to_vx(target->thread.fpu.vxrs, fprs); else memcpy(target->thread.fpu.fprs, &fprs, sizeof(fprs)); @@ -1047,13 +1047,10 @@ static int s390_vxrs_low_get(struct task_struct *target, if (!MACHINE_HAS_VX) return -ENODEV; - if (is_vx_task(target)) { - if (target == current) - save_fpu_regs(); - for (i = 0; i < __NUM_VXRS_LOW; i++) - vxrs[i] = *((__u64 *)(target->thread.fpu.vxrs + i) + 1); - } else - memset(vxrs, 0, sizeof(vxrs)); + if (target == current) + save_fpu_regs(); + for (i = 0; i < __NUM_VXRS_LOW; i++) + vxrs[i] = *((__u64 *)(target->thread.fpu.vxrs + i) + 1); return user_regset_copyout(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1); } @@ -1067,11 +1064,7 @@ static int s390_vxrs_low_set(struct task_struct *target, if (!MACHINE_HAS_VX) return -ENODEV; - if (!is_vx_task(target)) { - rc = alloc_vector_registers(target); - if (rc) - return rc; - } else if (target == current) + if (target == current) save_fpu_regs(); rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1); @@ -1091,13 +1084,10 @@ static int s390_vxrs_high_get(struct task_struct *target, if (!MACHINE_HAS_VX) return -ENODEV; - if (is_vx_task(target)) { - if (target == current) - save_fpu_regs(); - memcpy(vxrs, target->thread.fpu.vxrs + __NUM_VXRS_LOW, - sizeof(vxrs)); - } else - memset(vxrs, 0, sizeof(vxrs)); + if (target == current) + save_fpu_regs(); + memcpy(vxrs, target->thread.fpu.vxrs + __NUM_VXRS_LOW, sizeof(vxrs)); + return user_regset_copyout(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1); } @@ -1110,11 +1100,7 @@ static int s390_vxrs_high_set(struct task_struct *target, if (!MACHINE_HAS_VX) return -ENODEV; - if (!is_vx_task(target)) { - rc = alloc_vector_registers(target); - if (rc) - return rc; - } else if (target == current) + if (target == current) save_fpu_regs(); rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, |