diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2017-08-08 13:58:44 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-08-10 23:32:04 +1000 |
| commit | fbbcc3bb139e044653b47f183ac9189c31895f23 (patch) | |
| tree | 8779ece748701e2786dc7ba6425e00fe44aa7885 /arch/powerpc/kernel/head_8xx.S | |
| parent | f70b1e8d17ce93fc963936aee144f54a4530172f (diff) | |
powerpc/8xx: Remove SoftwareEmulation()
Since commit aa42c69c67f82 ("[POWERPC] Add support for FP emulation
for the e300c2 core"), program_check_exception() can be called for
math emulation. In that case, 'reason' is 0.
On the 8xx, there is a Software Emulation interrupt which is
called for all unimplemented and illegal instructions. This
interrupt calls SoftwareEmulation() which does almost the
same as program_check_exception() called with reason = 0.
The Software Emulation interrupt sets all reason bits to 0,
it is therefore possible to call program_check_exception()
directly from the interrupt handler.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/head_8xx.S')
| -rw-r--r-- | arch/powerpc/kernel/head_8xx.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 07ddced6bab3..778a0e11d0e6 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -300,7 +300,7 @@ SystemCall: /* On the MPC8xx, this is a software emulation interrupt. It occurs * for all unimplemented and illegal instructions. */ - EXCEPTION(0x1000, SoftEmu, SoftwareEmulation, EXC_XFER_STD) + EXCEPTION(0x1000, SoftEmu, program_check_exception, EXC_XFER_STD) . = 0x1100 /* |