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| author | Guo Ren <guoren@linux.alibaba.com> | 2020-03-31 18:45:52 +0300 |
|---|---|---|
| committer | Guo Ren <guoren@linux.alibaba.com> | 2020-03-31 19:06:40 +0300 |
| commit | 9c0e343d7654a329d1f9b53d253cbf7fb6eff85d (patch) | |
| tree | a51bfcdbb5d8191b5a1414f9b798b4f38f0e8efa /arch/csky/kernel/traps.c | |
| parent | dd7c983e78a28ff0b22f8bcf32a303b4f79cb318 (diff) | |
| download | linux-9c0e343d7654a329d1f9b53d253cbf7fb6eff85d.tar.xz | |
csky: Fixup get wrong psr value from phyical reg
We should get psr value from regs->psr in stack, not directly get
it from phyiscal register then save the vector number in
tsk->trap_no.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Diffstat (limited to 'arch/csky/kernel/traps.c')
| -rw-r--r-- | arch/csky/kernel/traps.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/csky/kernel/traps.c b/arch/csky/kernel/traps.c index b057480e7463..63715cb90ee9 100644 --- a/arch/csky/kernel/traps.c +++ b/arch/csky/kernel/traps.c @@ -115,8 +115,9 @@ asmlinkage void trap_c(struct pt_regs *regs) int sig; unsigned long vector; siginfo_t info; + struct task_struct *tsk = current; - vector = (mfcr("psr") >> 16) & 0xff; + vector = (regs->sr >> 16) & 0xff; switch (vector) { case VEC_ZERODIV: @@ -129,6 +130,7 @@ asmlinkage void trap_c(struct pt_regs *regs) sig = SIGTRAP; break; case VEC_ILLEGAL: + tsk->thread.trap_no = vector; die_if_kernel("Kernel mode ILLEGAL", regs, vector); #ifndef CONFIG_CPU_NO_USER_BKPT if (*(uint16_t *)instruction_pointer(regs) != USR_BKPT) @@ -146,16 +148,20 @@ asmlinkage void trap_c(struct pt_regs *regs) sig = SIGTRAP; break; case VEC_ACCESS: + tsk->thread.trap_no = vector; return buserr(regs); #ifdef CONFIG_CPU_NEED_SOFTALIGN case VEC_ALIGN: + tsk->thread.trap_no = vector; return csky_alignment(regs); #endif #ifdef CONFIG_CPU_HAS_FPU case VEC_FPE: + tsk->thread.trap_no = vector; die_if_kernel("Kernel mode FPE", regs, vector); return fpu_fpe(regs); case VEC_PRIV: + tsk->thread.trap_no = vector; die_if_kernel("Kernel mode PRIV", regs, vector); if (fpu_libc_helper(regs)) return; @@ -164,5 +170,8 @@ asmlinkage void trap_c(struct pt_regs *regs) sig = SIGSEGV; break; } + + tsk->thread.trap_no = vector; + send_sig(sig, current, 0); } |