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[MIPS] Work around bogus gcc warnings.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2006-11-30 01:14:47 +00:00
parent dd6bfd627c
commit e567988244
1 changed files with 22 additions and 21 deletions
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43
arch/mips/kernel/traps.c
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@ -399,19 +399,6 @@ asmlinkage void do_be(struct pt_regs *regs)
force_sig(SIGBUS, current);
}
static inline int get_insn_opcode(struct pt_regs *regs, unsigned int *opcode)
{
unsigned int __user *epc;
epc = (unsigned int __user *) regs->cp0_epc +
((regs->cp0_cause & CAUSEF_BD) != 0);
if (!get_user(*opcode, epc))
return 0;
force_sig(SIGSEGV, current);
return 1;
}
/*
* ll/sc emulation
*/
@ -546,8 +533,8 @@ static inline int simulate_llsc(struct pt_regs *regs)
{
unsigned int opcode;
if (unlikely(get_insn_opcode(regs, &opcode)))
return -EFAULT;
if (get_user(opcode, (unsigned int __user *) exception_epc(regs)))
goto out_sigsegv;
if ((opcode & OPCODE) == LL) {
simulate_ll(regs, opcode);
@ -559,6 +546,10 @@ static inline int simulate_llsc(struct pt_regs *regs)
}
return -EFAULT; /* Strange things going on ... */
out_sigsegv:
force_sig(SIGSEGV, current);
return -EFAULT;
}
/*
@ -571,8 +562,8 @@ static inline int simulate_rdhwr(struct pt_regs *regs)
struct thread_info *ti = task_thread_info(current);
unsigned int opcode;
if (unlikely(get_insn_opcode(regs, &opcode)))
return -EFAULT;
if (get_user(opcode, (unsigned int __user *) exception_epc(regs)))
goto out_sigsegv;
if (unlikely(compute_return_epc(regs)))
return -EFAULT;
@ -591,6 +582,10 @@ static inline int simulate_rdhwr(struct pt_regs *regs)
/* Not ours. */
return -EFAULT;
out_sigsegv:
force_sig(SIGSEGV, current);
return -EFAULT;
}
asmlinkage void do_ov(struct pt_regs *regs)
@ -676,8 +671,8 @@ asmlinkage void do_bp(struct pt_regs *regs)
die_if_kernel("Break instruction in kernel code", regs);
if (get_insn_opcode(regs, &opcode))
return;
if (get_user(opcode, (unsigned int __user *) exception_epc(regs)))
goto out_sigsegv;
/*
* There is the ancient bug in the MIPS assemblers that the break
@ -710,6 +705,9 @@ asmlinkage void do_bp(struct pt_regs *regs)
default:
force_sig(SIGTRAP, current);
}
out_sigsegv:
force_sig(SIGSEGV, current);
}
asmlinkage void do_tr(struct pt_regs *regs)
@ -719,8 +717,8 @@ asmlinkage void do_tr(struct pt_regs *regs)
die_if_kernel("Trap instruction in kernel code", regs);
if (get_insn_opcode(regs, &opcode))
return;
if (get_user(opcode, (unsigned int __user *) exception_epc(regs)))
goto out_sigsegv;
/* Immediate versions don't provide a code. */
if (!(opcode & OPCODE))
@ -747,6 +745,9 @@ asmlinkage void do_tr(struct pt_regs *regs)
default:
force_sig(SIGTRAP, current);
}
out_sigsegv:
force_sig(SIGSEGV, current);
}
asmlinkage void do_ri(struct pt_regs *regs)