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powerpc/sstep: Fix sstep.c compile on powerpcspe

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Commit be96f63375 ("powerpc: Split out instruction analysis part of
emulate_step()") introduced ldarx and stdcx into the instructions in
sstep.c, which are not accepted by the assembler on powerpcspe, but does
seem to be accepted by the normal powerpc assembler even in 32 bit mode.

Wrap these two instructions in a __powerpc64__ check like it is
everywhere else in the file.

Fixes: be96f63375 ("powerpc: Split out instruction analysis part of emulate_step()")
Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Lennart Sorensen 2016-05-05 16:44:44 -04:00 committed by Michael Ellerman
parent 31cdd0c39c
commit dd21731022
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/lib/sstep.c
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@ -1818,9 +1818,11 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr)
case 4:
__get_user_asmx(val, op.ea, err, "lwarx");
break;
#ifdef __powerpc64__
case 8:
__get_user_asmx(val, op.ea, err, "ldarx");
break;
#endif
default:
return 0;
}
@ -1841,9 +1843,11 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr)
case 4:
__put_user_asmx(op.val, op.ea, err, "stwcx.", cr);
break;
#ifdef __powerpc64__
case 8:
__put_user_asmx(op.val, op.ea, err, "stdcx.", cr);
break;
#endif
default:
return 0;
}