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powerpc/signal32: Move handle_signal32() close to handle_rt_signal32() 

Those two functions are similar and serving the same purpose.
To ease refactorisation, move them close to each other.

This is pure move, no code change, no cosmetic. Yes, checkpatch is
not happy, most will clear later.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/dbce67900bf566bcf40179467bf1eb500814c405.1597770847.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-08-18 17:19:25 +00:00 committed by Michael Ellerman
parent debf122c77
commit 3eea688be0
1 changed files with 85 additions and 85 deletions
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170
arch/powerpc/kernel/signal_32.c
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@ -836,6 +836,91 @@ badframe:
return 1;
}
/*
* OK, we're invoking a handler
*/
int handle_signal32(struct ksignal *ksig, sigset_t *oldset,
struct task_struct *tsk)
{
struct sigcontext __user *sc;
struct sigframe __user *frame;
struct mcontext __user *tm_mctx = NULL;
unsigned long newsp = 0;
int sigret;
unsigned long tramp;
struct pt_regs *regs = tsk->thread.regs;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/* Save the thread's msr before get_tm_stackpointer() changes it */
unsigned long msr = regs->msr;
#endif
/* Set up Signal Frame */
frame = get_sigframe(ksig, tsk, sizeof(*frame), 1);
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
sc = (struct sigcontext __user *) &frame->sctx;
#if _NSIG != 64
#error "Please adjust handle_signal()"
#endif
if (__put_user(to_user_ptr(ksig->ka.sa.sa_handler), &sc->handler)
|| __put_user(oldset->sig[0], &sc->oldmask)
#ifdef CONFIG_PPC64
|| __put_user((oldset->sig[0] >> 32), &sc->_unused[3])
#else
|| __put_user(oldset->sig[1], &sc->_unused[3])
#endif
|| __put_user(to_user_ptr(&frame->mctx), &sc->regs)
|| __put_user(ksig->sig, &sc->signal))
goto badframe;
if (vdso32_sigtramp && tsk->mm->context.vdso_base) {
sigret = 0;
tramp = tsk->mm->context.vdso_base + vdso32_sigtramp;
} else {
sigret = __NR_sigreturn;
tramp = (unsigned long) frame->mctx.tramp;
}
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
tm_mctx = &frame->mctx_transact;
if (MSR_TM_ACTIVE(msr)) {
if (save_tm_user_regs(regs, &frame->mctx, &frame->mctx_transact,
sigret, msr))
goto badframe;
}
else
#endif
{
if (save_user_regs(regs, &frame->mctx, tm_mctx, sigret, 1))
goto badframe;
}
regs->link = tramp;
#ifdef CONFIG_PPC_FPU_REGS
tsk->thread.fp_state.fpscr = 0; /* turn off all fp exceptions */
#endif
/* create a stack frame for the caller of the handler */
newsp = ((unsigned long)frame) - __SIGNAL_FRAMESIZE;
if (put_user(regs->gpr[1], (u32 __user *)newsp))
goto badframe;
regs->gpr[1] = newsp;
regs->gpr[3] = ksig->sig;
regs->gpr[4] = (unsigned long) sc;
regs->nip = (unsigned long) (unsigned long)ksig->ka.sa.sa_handler;
/* enter the signal handler in big-endian mode */
regs->msr &= ~MSR_LE;
return 0;
badframe:
signal_fault(tsk, regs, "handle_signal32", frame);
return 1;
}
static int do_setcontext(struct ucontext __user *ucp, struct pt_regs *regs, int sig)
{
sigset_t set;
@ -1188,91 +1273,6 @@ SYSCALL_DEFINE3(debug_setcontext, struct ucontext __user *, ctx,
}
#endif
/*
* OK, we're invoking a handler
*/
int handle_signal32(struct ksignal *ksig, sigset_t *oldset,
struct task_struct *tsk)
{
struct sigcontext __user *sc;
struct sigframe __user *frame;
struct mcontext __user *tm_mctx = NULL;
unsigned long newsp = 0;
int sigret;
unsigned long tramp;
struct pt_regs *regs = tsk->thread.regs;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
/* Save the thread's msr before get_tm_stackpointer() changes it */
unsigned long msr = regs->msr;
#endif
/* Set up Signal Frame */
frame = get_sigframe(ksig, tsk, sizeof(*frame), 1);
if (!access_ok(frame, sizeof(*frame)))
goto badframe;
sc = (struct sigcontext __user *) &frame->sctx;
#if _NSIG != 64
#error "Please adjust handle_signal()"
#endif
if (__put_user(to_user_ptr(ksig->ka.sa.sa_handler), &sc->handler)
|| __put_user(oldset->sig[0], &sc->oldmask)
#ifdef CONFIG_PPC64
|| __put_user((oldset->sig[0] >> 32), &sc->_unused[3])
#else
|| __put_user(oldset->sig[1], &sc->_unused[3])
#endif
|| __put_user(to_user_ptr(&frame->mctx), &sc->regs)
|| __put_user(ksig->sig, &sc->signal))
goto badframe;
if (vdso32_sigtramp && tsk->mm->context.vdso_base) {
sigret = 0;
tramp = tsk->mm->context.vdso_base + vdso32_sigtramp;
} else {
sigret = __NR_sigreturn;
tramp = (unsigned long) frame->mctx.tramp;
}
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
tm_mctx = &frame->mctx_transact;
if (MSR_TM_ACTIVE(msr)) {
if (save_tm_user_regs(regs, &frame->mctx, &frame->mctx_transact,
sigret, msr))
goto badframe;
}
else
#endif
{
if (save_user_regs(regs, &frame->mctx, tm_mctx, sigret, 1))
goto badframe;
}
regs->link = tramp;
#ifdef CONFIG_PPC_FPU_REGS
tsk->thread.fp_state.fpscr = 0; /* turn off all fp exceptions */
#endif
/* create a stack frame for the caller of the handler */
newsp = ((unsigned long)frame) - __SIGNAL_FRAMESIZE;
if (put_user(regs->gpr[1], (u32 __user *)newsp))
goto badframe;
regs->gpr[1] = newsp;
regs->gpr[3] = ksig->sig;
regs->gpr[4] = (unsigned long) sc;
regs->nip = (unsigned long) (unsigned long)ksig->ka.sa.sa_handler;
/* enter the signal handler in big-endian mode */
regs->msr &= ~MSR_LE;
return 0;
badframe:
signal_fault(tsk, regs, "handle_signal32", frame);
return 1;
}
/*
* Do a signal return; undo the signal stack.
*/