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| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2007-03-09 17:03:48 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-03-17 02:03:25 +0100 |
| commit | c6a2f4679331206ef5d353fc9a6cda2fa4aef8c6 (patch) | |
| tree | 9634ba2d5b6c6c97f4301b28088c68254201bf74 /arch/mips/kernel/r4k_fpu.S | |
| parent | [MIPS] IP27, IP35: Fix warnings. (diff) | |
| download | linux-c6a2f4679331206ef5d353fc9a6cda2fa4aef8c6.tar.xz linux-c6a2f4679331206ef5d353fc9a6cda2fa4aef8c6.zip | |
[MIPS] Check FCSR for pending interrupts, alternative version
Commit 6d6671066a311703bca1b91645bb1e04cc983387 is incomplete and misses
non-r4k CPUs. This patch reverts the commit and fixes in other way.
o Do FCSR checking in caller of restore_fp_context.
o Send SIGFPE if the signal handler set any FPU exception bits.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/r4k_fpu.S')
| -rw-r--r-- | arch/mips/kernel/r4k_fpu.S | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/arch/mips/kernel/r4k_fpu.S b/arch/mips/kernel/r4k_fpu.S index 59c1577ecbb3..dbd42adc52ed 100644 --- a/arch/mips/kernel/r4k_fpu.S +++ b/arch/mips/kernel/r4k_fpu.S @@ -114,14 +114,6 @@ LEAF(_save_fp_context32) */ LEAF(_restore_fp_context) EX lw t0, SC_FPC_CSR(a0) - - /* Fail if the CSR has exceptions pending */ - srl t1, t0, 5 - and t1, t0 - andi t1, 0x1f << 7 - bnez t1, fault - nop - #ifdef CONFIG_64BIT EX ldc1 $f1, SC_FPREGS+8(a0) EX ldc1 $f3, SC_FPREGS+24(a0) @@ -165,14 +157,6 @@ LEAF(_restore_fp_context) LEAF(_restore_fp_context32) /* Restore an o32 sigcontext. */ EX lw t0, SC32_FPC_CSR(a0) - - /* Fail if the CSR has exceptions pending */ - srl t1, t0, 5 - and t1, t0 - andi t1, 0x1f << 7 - bnez t1, fault - nop - EX ldc1 $f0, SC32_FPREGS+0(a0) EX ldc1 $f2, SC32_FPREGS+16(a0) EX ldc1 $f4, SC32_FPREGS+32(a0) |