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sparc64: clear syscall_noerror on the entry to syscall, not on the exit

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Move that sucker to just before TI_FPDEPTH and replace stb with sth in
etrap_save().  Take current_ds to its old place, so that we don't push
wsaved into TI_... flags.  That allows to lose clearing syscall_noerror
on return from syscall.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-09-26 01:21:14 -04:00
parent ddffeb8c4d
commit dff933da76
9 changed files with 29 additions and 30 deletions
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9
arch/sparc/kernel/process_64.c
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@@ -557,9 +557,8 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
(THREAD_SIZE - child_stack_sz));
memcpy(child_trap_frame, parent_sf, child_stack_sz);
t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) |
(0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) |
(((regs->tstate + 1) & TSTATE_CWP) << TI_FLAG_CWP_SHIFT);
__thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP] =
(regs->tstate + 1) & TSTATE_CWP;
t->new_child = 1;
t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS;
t->kregs = (struct pt_regs *) (child_trap_frame +
@@ -575,7 +574,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
t->kregs->u_regs[UREG_FP] =
((unsigned long) child_sf) - STACK_BIAS;
t->flags |= ((long)ASI_P << TI_FLAG_CURRENT_DS_SHIFT);
t->current_ds = ASI_P;
t->kregs->u_regs[UREG_G6] = (unsigned long) t;
t->kregs->u_regs[UREG_G4] = (unsigned long) t->task;
} else {
@@ -584,7 +583,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL;
}
t->kregs->u_regs[UREG_FP] = sp;
t->flags |= ((long)ASI_AIUS << TI_FLAG_CURRENT_DS_SHIFT);
t->current_ds = ASI_AIUS;
if (sp != regs->u_regs[UREG_FP]) {
unsigned long csp;