[PATCH] s390: task_pt_regs()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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579b3ea591
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@ -112,7 +112,7 @@ static inline int dump_regs32(struct pt_regs *ptregs, elf_gregset_t *regs)
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static inline int dump_task_regs32(struct task_struct *tsk, elf_gregset_t *regs)
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{
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struct pt_regs *ptregs = __KSTK_PTREGS(tsk);
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struct pt_regs *ptregs = task_pt_regs(tsk);
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int i;
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memcpy(®s->psw.mask, &ptregs->psw.mask, 4);
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@ -217,8 +217,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp,
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struct pt_regs childregs;
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} *frame;
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frame = ((struct fake_frame *)
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(THREAD_SIZE + (unsigned long) p->thread_info)) - 1;
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frame = container_of(task_pt_regs(p), struct fake_frame, childregs);
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p->thread.ksp = (unsigned long) frame;
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/* Store access registers to kernel stack of new process. */
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frame->childregs = *regs;
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@ -52,7 +52,7 @@ FixPerRegisters(struct task_struct *task)
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struct pt_regs *regs;
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per_struct *per_info;
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regs = __KSTK_PTREGS(task);
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regs = task_pt_regs(task);
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per_info = (per_struct *) &task->thread.per_info;
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per_info->control_regs.bits.em_instruction_fetch =
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per_info->single_step | per_info->instruction_fetch;
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@ -150,7 +150,7 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data)
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/*
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* psw and gprs are stored on the stack
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*/
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tmp = *(addr_t *)((addr_t) &__KSTK_PTREGS(child)->psw + addr);
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tmp = *(addr_t *)((addr_t) &task_pt_regs(child)->psw + addr);
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if (addr == (addr_t) &dummy->regs.psw.mask)
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/* Remove per bit from user psw. */
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tmp &= ~PSW_MASK_PER;
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@ -176,7 +176,7 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data)
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/*
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* orig_gpr2 is stored on the kernel stack
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*/
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tmp = (addr_t) __KSTK_PTREGS(child)->orig_gpr2;
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tmp = (addr_t) task_pt_regs(child)->orig_gpr2;
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} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
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/*
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@ -243,7 +243,7 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
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high order bit but older gdb's rely on it */
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data |= PSW_ADDR_AMODE;
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#endif
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*(addr_t *)((addr_t) &__KSTK_PTREGS(child)->psw + addr) = data;
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*(addr_t *)((addr_t) &task_pt_regs(child)->psw + addr) = data;
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} else if (addr < (addr_t) (&dummy->regs.orig_gpr2)) {
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/*
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@ -267,7 +267,7 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
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/*
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* orig_gpr2 is stored on the kernel stack
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*/
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__KSTK_PTREGS(child)->orig_gpr2 = data;
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task_pt_regs(child)->orig_gpr2 = data;
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} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {
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/*
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@ -393,15 +393,15 @@ peek_user_emu31(struct task_struct *child, addr_t addr, addr_t data)
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*/
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if (addr == (addr_t) &dummy32->regs.psw.mask) {
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/* Fake a 31 bit psw mask. */
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tmp = (__u32)(__KSTK_PTREGS(child)->psw.mask >> 32);
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tmp = (__u32)(task_pt_regs(child)->psw.mask >> 32);
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tmp = PSW32_MASK_MERGE(PSW32_USER_BITS, tmp);
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} else if (addr == (addr_t) &dummy32->regs.psw.addr) {
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/* Fake a 31 bit psw address. */
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tmp = (__u32) __KSTK_PTREGS(child)->psw.addr |
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tmp = (__u32) task_pt_regs(child)->psw.addr |
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PSW32_ADDR_AMODE31;
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} else {
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/* gpr 0-15 */
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tmp = *(__u32 *)((addr_t) &__KSTK_PTREGS(child)->psw +
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tmp = *(__u32 *)((addr_t) &task_pt_regs(child)->psw +
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addr*2 + 4);
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}
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} else if (addr < (addr_t) (&dummy32->regs.orig_gpr2)) {
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@ -415,7 +415,7 @@ peek_user_emu31(struct task_struct *child, addr_t addr, addr_t data)
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/*
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* orig_gpr2 is stored on the kernel stack
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*/
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tmp = *(__u32*)((addr_t) &__KSTK_PTREGS(child)->orig_gpr2 + 4);
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tmp = *(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4);
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} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
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/*
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@ -472,15 +472,15 @@ poke_user_emu31(struct task_struct *child, addr_t addr, addr_t data)
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if (tmp != PSW32_MASK_MERGE(PSW32_USER_BITS, tmp))
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/* Invalid psw mask. */
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return -EINVAL;
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__KSTK_PTREGS(child)->psw.mask =
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task_pt_regs(child)->psw.mask =
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PSW_MASK_MERGE(PSW_USER32_BITS, (__u64) tmp << 32);
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} else if (addr == (addr_t) &dummy32->regs.psw.addr) {
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/* Build a 64 bit psw address from 31 bit address. */
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__KSTK_PTREGS(child)->psw.addr =
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task_pt_regs(child)->psw.addr =
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(__u64) tmp & PSW32_ADDR_INSN;
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} else {
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/* gpr 0-15 */
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*(__u32*)((addr_t) &__KSTK_PTREGS(child)->psw
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*(__u32*)((addr_t) &task_pt_regs(child)->psw
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+ addr*2 + 4) = tmp;
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}
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} else if (addr < (addr_t) (&dummy32->regs.orig_gpr2)) {
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@ -494,7 +494,7 @@ poke_user_emu31(struct task_struct *child, addr_t addr, addr_t data)
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/*
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* orig_gpr2 is stored on the kernel stack
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*/
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*(__u32*)((addr_t) &__KSTK_PTREGS(child)->orig_gpr2 + 4) = tmp;
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*(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4) = tmp;
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} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {
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/*
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@ -282,7 +282,7 @@ static inline void start_hz_timer(void)
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{
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if (!cpu_isset(smp_processor_id(), nohz_cpu_mask))
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return;
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account_ticks(__KSTK_PTREGS(current));
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account_ticks(task_pt_regs(current));
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cpu_clear(smp_processor_id(), nohz_cpu_mask);
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}
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@ -240,7 +240,7 @@ char *task_show_regs(struct task_struct *task, char *buffer)
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{
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struct pt_regs *regs;
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regs = __KSTK_PTREGS(task);
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regs = task_pt_regs(task);
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buffer += sprintf(buffer, "task: %p, ksp: %p\n",
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task, (void *)task->thread.ksp);
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buffer += sprintf(buffer, "User PSW : %p %p\n",
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@ -163,7 +163,7 @@ static inline int dump_regs(struct pt_regs *ptregs, elf_gregset_t *regs)
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static inline int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
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{
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struct pt_regs *ptregs = __KSTK_PTREGS(tsk);
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struct pt_regs *ptregs = task_pt_regs(tsk);
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memcpy(®s->psw, &ptregs->psw, sizeof(regs->psw)+sizeof(regs->gprs));
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memcpy(regs->acrs, tsk->thread.acrs, sizeof(regs->acrs));
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regs->orig_gpr2 = ptregs->orig_gpr2;
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@ -191,10 +191,10 @@ extern void show_registers(struct pt_regs *regs);
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extern void show_trace(struct task_struct *task, unsigned long *sp);
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unsigned long get_wchan(struct task_struct *p);
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#define __KSTK_PTREGS(tsk) ((struct pt_regs *) \
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((unsigned long) tsk->thread_info + THREAD_SIZE - sizeof(struct pt_regs)))
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#define KSTK_EIP(tsk) (__KSTK_PTREGS(tsk)->psw.addr)
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#define KSTK_ESP(tsk) (__KSTK_PTREGS(tsk)->gprs[15])
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#define task_pt_regs(tsk) ((struct pt_regs *) \
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((void *)(tsk)->thread_info + THREAD_SIZE) - 1)
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#define KSTK_EIP(tsk) (task_pt_regs(tsk)->psw.addr)
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#define KSTK_ESP(tsk) (task_pt_regs(tsk)->gprs[15])
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/*
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* Give up the time slice of the virtual PU.
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