diff options
Diffstat (limited to 'target-arm/neon_helper.c')
| -rw-r--r-- | target-arm/neon_helper.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c index 268af33a6c..a7cf383cdd 100644 --- a/target-arm/neon_helper.c +++ b/target-arm/neon_helper.c @@ -1053,6 +1053,33 @@ uint32_t HELPER(neon_narrow_round_high_u16)(uint64_t x) return ((x >> 16) & 0xffff) | ((x >> 32) & 0xffff0000); } +uint32_t HELPER(neon_unarrow_sat8)(CPUState *env, uint64_t x) +{ + uint16_t s; + uint8_t d; + uint32_t res = 0; +#define SAT8(n) \ + s = x >> n; \ + if (s & 0x8000) { \ + SET_QC(); \ + } else { \ + if (s > 0xff) { \ + d = 0xff; \ + SET_QC(); \ + } else { \ + d = s; \ + } \ + res |= (uint32_t)d << (n / 2); \ + } + + SAT8(0); + SAT8(16); + SAT8(32); + SAT8(48); +#undef SAT8 + return res; +} + uint32_t HELPER(neon_narrow_sat_u8)(CPUState *env, uint64_t x) { uint16_t s; @@ -1099,6 +1126,29 @@ uint32_t HELPER(neon_narrow_sat_s8)(CPUState *env, uint64_t x) return res; } +uint32_t HELPER(neon_unarrow_sat16)(CPUState *env, uint64_t x) +{ + uint32_t high; + uint32_t low; + low = x; + if (low & 0x80000000) { + low = 0; + SET_QC(); + } else if (low > 0xffff) { + low = 0xffff; + SET_QC(); + } + high = x >> 32; + if (high & 0x80000000) { + high = 0; + SET_QC(); + } else if (high > 0xffff) { + high = 0xffff; + SET_QC(); + } + return low | (high << 16); +} + uint32_t HELPER(neon_narrow_sat_u16)(CPUState *env, uint64_t x) { uint32_t high; @@ -1133,6 +1183,19 @@ uint32_t HELPER(neon_narrow_sat_s16)(CPUState *env, uint64_t x) return (uint16_t)low | (high << 16); } +uint32_t HELPER(neon_unarrow_sat32)(CPUState *env, uint64_t x) +{ + if (x & 0x8000000000000000ull) { + SET_QC(); + return 0; + } + if (x > 0xffffffffu) { + SET_QC(); + return 0xffffffffu; + } + return x; +} + uint32_t HELPER(neon_narrow_sat_u32)(CPUState *env, uint64_t x) { if (x > 0xffffffffu) { |