Commit c7584fb6 authored by Al Viro's avatar Al Viro Committed by Linus Torvalds
Browse files

[PATCH] s390: task_pt_regs() 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 579b3ea5

arch/s390/kernel/binfmt_elf32.c

+1 −1
Original line number Diff line number Diff line
@@ -112,7 +112,7 @@ static inline int dump_regs32(struct pt_regs *ptregs, elf_gregset_t *regs) 


static inline int dump_task_regs32(struct task_struct *tsk, elf_gregset_t *regs)

{

	struct pt_regs *ptregs = __KSTK_PTREGS(tsk);

	struct pt_regs *ptregs = task_pt_regs(tsk);

	int i;



	memcpy(&regs->psw.mask, &ptregs->psw.mask, 4);

arch/s390/kernel/process.c

+1 −2
Original line number Diff line number Diff line
@@ -217,8 +217,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp, 
            struct pt_regs childregs;

          } *frame;



        frame = ((struct fake_frame *)

		 (THREAD_SIZE + (unsigned long) p->thread_info)) - 1;

        frame = container_of(task_pt_regs(p), struct fake_frame, childregs);

        p->thread.ksp = (unsigned long) frame;

	/* Store access registers to kernel stack of new process. */

        frame->childregs = *regs;

arch/s390/kernel/ptrace.c

+13 −13
Original line number Diff line number Diff line
@@ -52,7 +52,7 @@ FixPerRegisters(struct task_struct *task) 
	struct pt_regs *regs;

	per_struct *per_info;



	regs = __KSTK_PTREGS(task);

	regs = task_pt_regs(task);

	per_info = (per_struct *) &task->thread.per_info;

	per_info->control_regs.bits.em_instruction_fetch =

		per_info->single_step | per_info->instruction_fetch;
@@ -150,7 +150,7 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data) 
		/*

		 * psw and gprs are stored on the stack

		 */

		tmp = *(addr_t *)((addr_t) &__KSTK_PTREGS(child)->psw + addr);

		tmp = *(addr_t *)((addr_t) &task_pt_regs(child)->psw + addr);

		if (addr == (addr_t) &dummy->regs.psw.mask)

			/* Remove per bit from user psw. */

			tmp &= ~PSW_MASK_PER;
@@ -176,7 +176,7 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data) 
		/*

		 * orig_gpr2 is stored on the kernel stack

		 */

		tmp = (addr_t) __KSTK_PTREGS(child)->orig_gpr2;

		tmp = (addr_t) task_pt_regs(child)->orig_gpr2;



	} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {

		/*
@@ -243,7 +243,7 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data) 
			   high order bit but older gdb's rely on it */

			data |= PSW_ADDR_AMODE;

#endif

		*(addr_t *)((addr_t) &__KSTK_PTREGS(child)->psw + addr) = data;

		*(addr_t *)((addr_t) &task_pt_regs(child)->psw + addr) = data;



	} else if (addr < (addr_t) (&dummy->regs.orig_gpr2)) {

		/*
@@ -267,7 +267,7 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data) 
		/*

		 * orig_gpr2 is stored on the kernel stack

		 */

		__KSTK_PTREGS(child)->orig_gpr2 = data;

		task_pt_regs(child)->orig_gpr2 = data;



	} else if (addr < (addr_t) (&dummy->regs.fp_regs + 1)) {

		/*
@@ -393,15 +393,15 @@ peek_user_emu31(struct task_struct *child, addr_t addr, addr_t data) 
		 */

		if (addr == (addr_t) &dummy32->regs.psw.mask) {

			/* Fake a 31 bit psw mask. */

			tmp = (__u32)(__KSTK_PTREGS(child)->psw.mask >> 32);

			tmp = (__u32)(task_pt_regs(child)->psw.mask >> 32);

			tmp = PSW32_MASK_MERGE(PSW32_USER_BITS, tmp);

		} else if (addr == (addr_t) &dummy32->regs.psw.addr) {

			/* Fake a 31 bit psw address. */

			tmp = (__u32) __KSTK_PTREGS(child)->psw.addr |

			tmp = (__u32) task_pt_regs(child)->psw.addr |

				PSW32_ADDR_AMODE31;

		} else {

			/* gpr 0-15 */

			tmp = *(__u32 *)((addr_t) &__KSTK_PTREGS(child)->psw +

			tmp = *(__u32 *)((addr_t) &task_pt_regs(child)->psw +

					 addr*2 + 4);

		}

	} else if (addr < (addr_t) (&dummy32->regs.orig_gpr2)) {
@@ -415,7 +415,7 @@ peek_user_emu31(struct task_struct *child, addr_t addr, addr_t data) 
		/*

		 * orig_gpr2 is stored on the kernel stack

		 */

		tmp = *(__u32*)((addr_t) &__KSTK_PTREGS(child)->orig_gpr2 + 4);

		tmp = *(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4);



	} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {

		/*
@@ -472,15 +472,15 @@ poke_user_emu31(struct task_struct *child, addr_t addr, addr_t data) 
			if (tmp != PSW32_MASK_MERGE(PSW32_USER_BITS, tmp))

				/* Invalid psw mask. */

				return -EINVAL;

			__KSTK_PTREGS(child)->psw.mask =

			task_pt_regs(child)->psw.mask =

				PSW_MASK_MERGE(PSW_USER32_BITS, (__u64) tmp << 32);

		} else if (addr == (addr_t) &dummy32->regs.psw.addr) {

			/* Build a 64 bit psw address from 31 bit address. */

			__KSTK_PTREGS(child)->psw.addr = 

			task_pt_regs(child)->psw.addr =

				(__u64) tmp & PSW32_ADDR_INSN;

		} else {

			/* gpr 0-15 */

			*(__u32*)((addr_t) &__KSTK_PTREGS(child)->psw

			*(__u32*)((addr_t) &task_pt_regs(child)->psw

				  + addr*2 + 4) = tmp;

		}

	} else if (addr < (addr_t) (&dummy32->regs.orig_gpr2)) {
@@ -494,7 +494,7 @@ poke_user_emu31(struct task_struct *child, addr_t addr, addr_t data) 
		/*

		 * orig_gpr2 is stored on the kernel stack

		 */

		*(__u32*)((addr_t) &__KSTK_PTREGS(child)->orig_gpr2 + 4) = tmp;

		*(__u32*)((addr_t) &task_pt_regs(child)->orig_gpr2 + 4) = tmp;



	} else if (addr < (addr_t) (&dummy32->regs.fp_regs + 1)) {

		/*

arch/s390/kernel/time.c

+1 −1
Original line number Diff line number Diff line
@@ -282,7 +282,7 @@ static inline void start_hz_timer(void) 
{

	if (!cpu_isset(smp_processor_id(), nohz_cpu_mask))

		return;

	account_ticks(__KSTK_PTREGS(current));

	account_ticks(task_pt_regs(current));

	cpu_clear(smp_processor_id(), nohz_cpu_mask);

}

arch/s390/kernel/traps.c

+1 −1
Original line number Diff line number Diff line
@@ -240,7 +240,7 @@ char *task_show_regs(struct task_struct *task, char *buffer) 
{

	struct pt_regs *regs;



	regs = __KSTK_PTREGS(task);

	regs = task_pt_regs(task);

	buffer += sprintf(buffer, "task: %p, ksp: %p\n",

		       task, (void *)task->thread.ksp);

	buffer += sprintf(buffer, "User PSW : %p %p\n",