diff options
Diffstat (limited to 'target-sparc/op_helper.c')
| -rw-r--r-- | target-sparc/op_helper.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c index 2a71795fa8..e0d5aec779 100644 --- a/target-sparc/op_helper.c +++ b/target-sparc/op_helper.c @@ -756,6 +756,17 @@ static uint32_t compute_C_flags(void) return env->psr & PSR_CARRY; } +static inline uint32_t get_NZ_icc(target_ulong dst) +{ + uint32_t ret = 0; + + if (!(dst & 0xffffffffULL)) + ret |= PSR_ZERO; + if ((int32_t) (dst & 0xffffffffULL) < 0) + ret |= PSR_NEG; + return ret; +} + #ifdef TARGET_SPARC64 static uint32_t compute_all_flags_xcc(void) { @@ -767,6 +778,86 @@ static uint32_t compute_C_flags_xcc(void) return env->xcc & PSR_CARRY; } +static inline uint32_t get_NZ_xcc(target_ulong dst) +{ + uint32_t ret = 0; + + if (!dst) + ret |= PSR_ZERO; + if ((int64_t)dst < 0) + ret |= PSR_NEG; + return ret; +} +#endif + +static inline uint32_t get_C_add_icc(target_ulong dst, target_ulong src1) +{ + uint32_t ret = 0; + + if ((dst & 0xffffffffULL) < (src1 & 0xffffffffULL)) + ret |= PSR_CARRY; + return ret; +} + +static inline uint32_t get_V_add_icc(target_ulong dst, target_ulong src1, + target_ulong src2) +{ + uint32_t ret = 0; + + if (((src1 ^ src2 ^ -1) & (src1 ^ dst)) & (1ULL << 31)) + ret |= PSR_OVF; + return ret; +} + +static uint32_t compute_all_add(void) +{ + uint32_t ret; + + ret = get_NZ_icc(CC_DST); + ret |= get_C_add_icc(CC_DST, CC_SRC); + ret |= get_V_add_icc(CC_DST, CC_SRC, CC_SRC2); + return ret; +} + +static uint32_t compute_C_add(void) +{ + return get_C_add_icc(CC_DST, CC_SRC); +} + +#ifdef TARGET_SPARC64 +static inline uint32_t get_C_add_xcc(target_ulong dst, target_ulong src1) +{ + uint32_t ret = 0; + + if (dst < src1) + ret |= PSR_CARRY; + return ret; +} + +static inline uint32_t get_V_add_xcc(target_ulong dst, target_ulong src1, + target_ulong src2) +{ + uint32_t ret = 0; + + if (((src1 ^ src2 ^ -1) & (src1 ^ dst)) & (1ULL << 63)) + ret |= PSR_OVF; + return ret; +} + +static uint32_t compute_all_add_xcc(void) +{ + uint32_t ret; + + ret = get_NZ_xcc(CC_DST); + ret |= get_C_add_xcc(CC_DST, CC_SRC); + ret |= get_V_add_xcc(CC_DST, CC_SRC, CC_SRC2); + return ret; +} + +static uint32_t compute_C_add_xcc(void) +{ + return get_C_add_xcc(CC_DST, CC_SRC); +} #endif typedef struct CCTable { @@ -777,12 +868,14 @@ typedef struct CCTable { static const CCTable icc_table[CC_OP_NB] = { /* CC_OP_DYNAMIC should never happen */ [CC_OP_FLAGS] = { compute_all_flags, compute_C_flags }, + [CC_OP_ADD] = { compute_all_add, compute_C_add }, }; #ifdef TARGET_SPARC64 static const CCTable xcc_table[CC_OP_NB] = { /* CC_OP_DYNAMIC should never happen */ [CC_OP_FLAGS] = { compute_all_flags_xcc, compute_C_flags_xcc }, + [CC_OP_ADD] = { compute_all_add_xcc, compute_C_add_xcc }, }; #endif |