diff options
Diffstat (limited to 'arch/nds32/kernel/fpu.c')
| -rw-r--r-- | arch/nds32/kernel/fpu.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/arch/nds32/kernel/fpu.c b/arch/nds32/kernel/fpu.c index e55a1e190e97..2942df6f93e6 100644 --- a/arch/nds32/kernel/fpu.c +++ b/arch/nds32/kernel/fpu.c @@ -183,10 +183,10 @@ inline void fill_sigfpe_signo(unsigned int fpcsr, int *signo) { if (fpcsr & FPCSR_mskOVFT) *signo = FPE_FLTOVF; - else if (fpcsr & FPCSR_mskUDFT) - *signo = FPE_FLTUND; else if (fpcsr & FPCSR_mskIVOT) *signo = FPE_FLTINV; + else if (fpcsr & FPCSR_mskUDFT) + *signo = FPE_FLTUND; else if (fpcsr & FPCSR_mskDBZT) *signo = FPE_FLTDIV; else if (fpcsr & FPCSR_mskIEXT) @@ -201,16 +201,37 @@ inline void handle_fpu_exception(struct pt_regs *regs) lose_fpu(); fpcsr = current->thread.fpu.fpcsr; - if (fpcsr & FPCSR_mskRIT) { + if (fpcsr & FPCSR_mskDNIT) { + si_signo = do_fpuemu(regs, ¤t->thread.fpu); + fpcsr = current->thread.fpu.fpcsr; + if (!si_signo) + goto done; + } else if (fpcsr & FPCSR_mskRIT) { if (!user_mode(regs)) do_exit(SIGILL); si_signo = SIGILL; + } + + + switch (si_signo) { + case SIGFPE: + fill_sigfpe_signo(fpcsr, &si_code); + break; + case SIGILL: show_regs(regs); si_code = ILL_COPROC; - } else - fill_sigfpe_signo(fpcsr, &si_code); + break; + case SIGBUS: + si_code = BUS_ADRERR; + break; + default: + break; + } + force_sig_fault(si_signo, si_code, (void __user *)instruction_pointer(regs), current); +done: + own_fpu(); } bool do_fpu_exception(unsigned int subtype, struct pt_regs *regs) |