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um: let signal_delivered() do SIGTRAP on singlestepping into handler 

... rather than duplicating that in sigframe setup code (and doing that
inconsistently, at that)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-09-06 13:39:47 -04:00
parent 344569aef3
commit 8e2c85aa6c
2 changed files with 5 additions and 7 deletions
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6
arch/um/kernel/signal.c
View File

@ -22,9 +22,13 @@ static void handle_signal(struct pt_regs *regs, unsigned long signr,
struct k_sigaction *ka, siginfo_t *info)
{
sigset_t *oldset = sigmask_to_save();
int singlestep = 0;
unsigned long sp;
int err;
if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
singlestep = 1;
/* Did we come from a system call? */
if (PT_REGS_SYSCALL_NR(regs) >= 0) {
/* If so, check system call restarting.. */
@ -61,7 +65,7 @@ static void handle_signal(struct pt_regs *regs, unsigned long signr,
if (err)
force_sigsegv(signr, current);
else
signal_delivered(signr, info, ka, regs, 0);
signal_delivered(signr, info, ka, regs, singlestep);
}
static int kern_do_signal(struct pt_regs *regs)

6
arch/x86/um/signal.c
View File

@ -416,9 +416,6 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
PT_REGS_AX(regs) = (unsigned long) sig;
PT_REGS_DX(regs) = (unsigned long) 0;
PT_REGS_CX(regs) = (unsigned long) 0;
if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
ptrace_notify(SIGTRAP);
return 0;
}
@ -466,9 +463,6 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
PT_REGS_AX(regs) = (unsigned long) sig;
PT_REGS_DX(regs) = (unsigned long) &frame->info;
PT_REGS_CX(regs) = (unsigned long) &frame->uc;
if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
ptrace_notify(SIGTRAP);
return 0;
}