@@ -3406,7 +3406,6 @@ static void gen_bitops (DisasContext *ctx, uint32_t opc, int rt,
{
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
- target_ulong mask;
gen_load_gpr(t1, rs);
switch (opc) {
@@ -3439,45 +3438,27 @@ static void gen_bitops (DisasContext *ctx, uint32_t opc, int rt,
case OPC_INS:
if (lsb > msb)
goto fail;
- mask = ((msb - lsb + 1 < 32) ? ((1 << (msb - lsb + 1)) - 1) : ~0) << lsb;
gen_load_gpr(t0, rt);
- tcg_gen_andi_tl(t0, t0, ~mask);
- tcg_gen_shli_tl(t1, t1, lsb);
- tcg_gen_andi_tl(t1, t1, mask);
- tcg_gen_or_tl(t0, t0, t1);
+ tcg_gen_deposit_tl(t0, t0, t1, lsb, msb - lsb + 1);
tcg_gen_ext32s_tl(t0, t0);
break;
#if defined(TARGET_MIPS64)
case OPC_DINSM:
if (lsb > msb)
goto fail;
- mask = ((msb - lsb + 1 + 32 < 64) ? ((1ULL << (msb - lsb + 1 + 32)) - 1) : ~0ULL) << lsb;
- gen_load_gpr(t0, rt);
- tcg_gen_andi_tl(t0, t0, ~mask);
- tcg_gen_shli_tl(t1, t1, lsb);
- tcg_gen_andi_tl(t1, t1, mask);
- tcg_gen_or_tl(t0, t0, t1);
+ tcg_gen_deposit_tl(t0, t0, t1, lsb, msb + 32 - lsb + 1);
break;
case OPC_DINSU:
if (lsb > msb)
goto fail;
- mask = ((1ULL << (msb - lsb + 1)) - 1) << (lsb + 32);
gen_load_gpr(t0, rt);
- tcg_gen_andi_tl(t0, t0, ~mask);
- tcg_gen_shli_tl(t1, t1, lsb + 32);
- tcg_gen_andi_tl(t1, t1, mask);
- tcg_gen_or_tl(t0, t0, t1);
+ tcg_gen_deposit_tl(t0, t0, t1, lsb + 32, msb - lsb + 1);
break;
case OPC_DINS:
if (lsb > msb)
goto fail;
gen_load_gpr(t0, rt);
- mask = ((1ULL << (msb - lsb + 1)) - 1) << lsb;
- gen_load_gpr(t0, rt);
- tcg_gen_andi_tl(t0, t0, ~mask);
- tcg_gen_shli_tl(t1, t1, lsb);
- tcg_gen_andi_tl(t1, t1, mask);
- tcg_gen_or_tl(t0, t0, t1);
+ tcg_gen_deposit_tl(t0, t0, t1, lsb, msb - lsb + 1);
break;
#endif
default:
Use the deposit op instead of and hardcoded bit field insertion. It allows the host to emit the corresponding instruction if available. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> --- target-mips/translate.c | 27 ++++----------------------- 1 file changed, 4 insertions(+), 23 deletions(-)