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target-mips: pass 0 instead of -1 as rs in microMIPS LUI instruction 

Using rs = -1 in gen_logic_imm() for microMIPS LUI instruction is dangerous
and may bite us when implementing microMIPS R6 because in R6 AUI and LUI
are distinguished by rs value. Therefore use 0 for safety.

Reported-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
This commit is contained in:
Leon Alrae 2015-01-26 16:58:57 +00:00
parent b40a1530f2
commit 5e88759a52
1 changed files with 1 additions and 1 deletions
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2
target-mips/translate.c
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@ -13653,7 +13653,7 @@ static void decode_micromips32_opc (CPUMIPSState *env, DisasContext *ctx,
target. */
break;
case LUI:
gen_logic_imm(ctx, OPC_LUI, rs, -1, imm);
gen_logic_imm(ctx, OPC_LUI, rs, 0, imm);
break;
case SYNCI:
/* Break the TB to be able to sync copied instructions