diff options
| -rw-r--r-- | target/mips/tcg/ldst_helper.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/target/mips/tcg/ldst_helper.c b/target/mips/tcg/ldst_helper.c index 8d1dfea..0544597 100644 --- a/target/mips/tcg/ldst_helper.c +++ b/target/mips/tcg/ldst_helper.c @@ -57,30 +57,39 @@ static inline bool cpu_is_bigendian(CPUMIPSState *env) return extract32(env->CP0_Config0, CP0C0_BE, 1); } -#ifdef TARGET_WORDS_BIGENDIAN -#define GET_LMASK(v) ((v) & 3) -#else -#define GET_LMASK(v) (((v) & 3) ^ 3) -#endif +static inline target_ulong get_lmask(CPUMIPSState *env, + target_ulong value, unsigned bits) +{ + unsigned mask = (bits / BITS_PER_BYTE) - 1; + + value &= mask; + + if (!cpu_is_bigendian(env)) { + value ^= mask; + } + + return value; +} void helper_swl(CPUMIPSState *env, target_ulong arg1, target_ulong arg2, int mem_idx) { + target_ulong lmask = get_lmask(env, arg2, 32); int dir = cpu_is_bigendian(env) ? 1 : -1; cpu_stb_mmuidx_ra(env, arg2, (uint8_t)(arg1 >> 24), mem_idx, GETPC()); - if (GET_LMASK(arg2) <= 2) { + if (lmask <= 2) { cpu_stb_mmuidx_ra(env, arg2 + 1 * dir, (uint8_t)(arg1 >> 16), mem_idx, GETPC()); } - if (GET_LMASK(arg2) <= 1) { + if (lmask <= 1) { cpu_stb_mmuidx_ra(env, arg2 + 2 * dir, (uint8_t)(arg1 >> 8), mem_idx, GETPC()); } - if (GET_LMASK(arg2) == 0) { + if (lmask == 0) { cpu_stb_mmuidx_ra(env, arg2 + 3 * dir, (uint8_t)arg1, mem_idx, GETPC()); } @@ -89,21 +98,22 @@ void helper_swl(CPUMIPSState *env, target_ulong arg1, target_ulong arg2, void helper_swr(CPUMIPSState *env, target_ulong arg1, target_ulong arg2, int mem_idx) { + target_ulong lmask = get_lmask(env, arg2, 32); int dir = cpu_is_bigendian(env) ? 1 : -1; cpu_stb_mmuidx_ra(env, arg2, (uint8_t)arg1, mem_idx, GETPC()); - if (GET_LMASK(arg2) >= 1) { + if (lmask >= 1) { cpu_stb_mmuidx_ra(env, arg2 - 1 * dir, (uint8_t)(arg1 >> 8), mem_idx, GETPC()); } - if (GET_LMASK(arg2) >= 2) { + if (lmask >= 2) { cpu_stb_mmuidx_ra(env, arg2 - 2 * dir, (uint8_t)(arg1 >> 16), mem_idx, GETPC()); } - if (GET_LMASK(arg2) == 3) { + if (lmask == 3) { cpu_stb_mmuidx_ra(env, arg2 - 3 * dir, (uint8_t)(arg1 >> 24), mem_idx, GETPC()); } |