target-mips: Fix seg fault for LUI when MIPS_DEBUG_DISAS==1.
The call to gen_logic_imm for OPC_LUI passes -1 for rs. This causes the MIPS_DEBUG statement to seg fault due to the deference of regnames[rs]. This patch fixes that. Signed-off-by: Eric Johnson <ericj@mips.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> (aurel32: replaced static string formating by a static string)
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@ -2013,7 +2013,6 @@ static void gen_logic_imm(CPUMIPSState *env, DisasContext *ctx, uint32_t opc,
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int rt, int rs, int16_t imm)
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{
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target_ulong uimm;
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const char *opn = "imm logic";
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if (rt == 0) {
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/* If no destination, treat it as a NOP. */
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@ -2027,29 +2026,34 @@ static void gen_logic_imm(CPUMIPSState *env, DisasContext *ctx, uint32_t opc,
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tcg_gen_andi_tl(cpu_gpr[rt], cpu_gpr[rs], uimm);
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else
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tcg_gen_movi_tl(cpu_gpr[rt], 0);
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opn = "andi";
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MIPS_DEBUG("andi %s, %s, " TARGET_FMT_lx, regnames[rt],
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regnames[rs], uimm);
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break;
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case OPC_ORI:
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if (rs != 0)
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tcg_gen_ori_tl(cpu_gpr[rt], cpu_gpr[rs], uimm);
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else
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tcg_gen_movi_tl(cpu_gpr[rt], uimm);
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opn = "ori";
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MIPS_DEBUG("ori %s, %s, " TARGET_FMT_lx, regnames[rt],
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regnames[rs], uimm);
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break;
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case OPC_XORI:
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if (likely(rs != 0))
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tcg_gen_xori_tl(cpu_gpr[rt], cpu_gpr[rs], uimm);
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else
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tcg_gen_movi_tl(cpu_gpr[rt], uimm);
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opn = "xori";
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MIPS_DEBUG("xori %s, %s, " TARGET_FMT_lx, regnames[rt],
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regnames[rs], uimm);
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break;
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case OPC_LUI:
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tcg_gen_movi_tl(cpu_gpr[rt], imm << 16);
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opn = "lui";
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MIPS_DEBUG("lui %s, " TARGET_FMT_lx, regnames[rt], uimm);
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break;
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default:
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MIPS_DEBUG("Unknown logical immediate opcode %08x", opc);
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break;
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}
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(void)opn; /* avoid a compiler warning */
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MIPS_DEBUG("%s %s, %s, " TARGET_FMT_lx, opn, regnames[rt], regnames[rs], uimm);
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}
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/* Set on less than with immediate operand */
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