From 5bcaa4cc41923871777c3d13906267e812775094 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 19 Sep 2017 20:45:53 +1000 Subject: [PATCH] powerpc/sstep: Fix issues with mcrf mcrf broke when we changed analyse_instr() to not modify the register state. The instruction writes to the CR, so we need to store the result in op->ccval, not op->val. Fixes: 3cdfcbfd32b9 ("powerpc: Change analyse_instr so it doesn't modify *regs") Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman --- arch/powerpc/lib/sstep.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index 9d72e5900320..c4cda1afb49d 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -1513,10 +1513,10 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, op->type = COMPUTE + SETCC; imm = 0xf0000000UL; val = regs->gpr[rd]; - op->val = regs->ccr; + op->ccval = regs->ccr; for (sh = 0; sh < 8; ++sh) { if (instr & (0x80000 >> sh)) - op->val = (op->val & ~imm) | + op->ccval = (op->ccval & ~imm) | (val & imm); imm >>= 4; }