diff options
Diffstat (limited to 'src/core/arm/skyeye_common/armsupp.cpp')
| -rw-r--r-- | src/core/arm/skyeye_common/armsupp.cpp | 56 |
1 files changed, 19 insertions, 37 deletions
diff --git a/src/core/arm/skyeye_common/armsupp.cpp b/src/core/arm/skyeye_common/armsupp.cpp index 883713e86..06aa1b075 100644 --- a/src/core/arm/skyeye_common/armsupp.cpp +++ b/src/core/arm/skyeye_common/armsupp.cpp @@ -16,14 +16,12 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "common/logging/log.h" - #include "core/arm/skyeye_common/arm_regformat.h" #include "core/arm/skyeye_common/armstate.h" #include "core/arm/skyeye_common/armsupp.h" // Unsigned sum of absolute difference -u8 ARMul_UnsignedAbsoluteDifference(u8 left, u8 right) -{ +u8 ARMul_UnsignedAbsoluteDifference(u8 left, u8 right) { if (left > right) return left - right; @@ -31,8 +29,8 @@ u8 ARMul_UnsignedAbsoluteDifference(u8 left, u8 right) } // Add with carry, indicates if a carry-out or signed overflow occurred. -u32 AddWithCarry(u32 left, u32 right, u32 carry_in, bool* carry_out_occurred, bool* overflow_occurred) -{ +u32 AddWithCarry(u32 left, u32 right, u32 carry_in, bool* carry_out_occurred, + bool* overflow_occurred) { u64 unsigned_sum = (u64)left + (u64)right + (u64)carry_in; s64 signed_sum = (s64)(s32)left + (s64)(s32)right + (s64)carry_in; u64 result = (unsigned_sum & 0xFFFFFFFF); @@ -47,22 +45,17 @@ u32 AddWithCarry(u32 left, u32 right, u32 carry_in, bool* carry_out_occurred, bo } // Compute whether an addition of A and B, giving RESULT, overflowed. -bool AddOverflow(u32 a, u32 b, u32 result) -{ - return ((NEG(a) && NEG(b) && POS(result)) || - (POS(a) && POS(b) && NEG(result))); +bool AddOverflow(u32 a, u32 b, u32 result) { + return ((NEG(a) && NEG(b) && POS(result)) || (POS(a) && POS(b) && NEG(result))); } // Compute whether a subtraction of A and B, giving RESULT, overflowed. -bool SubOverflow(u32 a, u32 b, u32 result) -{ - return ((NEG(a) && POS(b) && POS(result)) || - (POS(a) && NEG(b) && NEG(result))); +bool SubOverflow(u32 a, u32 b, u32 result) { + return ((NEG(a) && POS(b) && POS(result)) || (POS(a) && NEG(b) && NEG(result))); } // Returns true if the Q flag should be set as a result of overflow. -bool ARMul_AddOverflowQ(u32 a, u32 b) -{ +bool ARMul_AddOverflowQ(u32 a, u32 b) { u32 result = a + b; if (((result ^ a) & (u32)0x80000000) && ((a ^ b) & (u32)0x80000000) == 0) return true; @@ -71,8 +64,7 @@ bool ARMul_AddOverflowQ(u32 a, u32 b) } // 8-bit signed saturated addition -u8 ARMul_SignedSaturatedAdd8(u8 left, u8 right) -{ +u8 ARMul_SignedSaturatedAdd8(u8 left, u8 right) { u8 result = left + right; if (((result ^ left) & 0x80) && ((left ^ right) & 0x80) == 0) { @@ -86,8 +78,7 @@ u8 ARMul_SignedSaturatedAdd8(u8 left, u8 right) } // 8-bit signed saturated subtraction -u8 ARMul_SignedSaturatedSub8(u8 left, u8 right) -{ +u8 ARMul_SignedSaturatedSub8(u8 left, u8 right) { u8 result = left - right; if (((result ^ left) & 0x80) && ((left ^ right) & 0x80) != 0) { @@ -101,8 +92,7 @@ u8 ARMul_SignedSaturatedSub8(u8 left, u8 right) } // 16-bit signed saturated addition -u16 ARMul_SignedSaturatedAdd16(u16 left, u16 right) -{ +u16 ARMul_SignedSaturatedAdd16(u16 left, u16 right) { u16 result = left + right; if (((result ^ left) & 0x8000) && ((left ^ right) & 0x8000) == 0) { @@ -116,8 +106,7 @@ u16 ARMul_SignedSaturatedAdd16(u16 left, u16 right) } // 16-bit signed saturated subtraction -u16 ARMul_SignedSaturatedSub16(u16 left, u16 right) -{ +u16 ARMul_SignedSaturatedSub16(u16 left, u16 right) { u16 result = left - right; if (((result ^ left) & 0x8000) && ((left ^ right) & 0x8000) != 0) { @@ -131,8 +120,7 @@ u16 ARMul_SignedSaturatedSub16(u16 left, u16 right) } // 8-bit unsigned saturated addition -u8 ARMul_UnsignedSaturatedAdd8(u8 left, u8 right) -{ +u8 ARMul_UnsignedSaturatedAdd8(u8 left, u8 right) { u8 result = left + right; if (result < left) @@ -142,8 +130,7 @@ u8 ARMul_UnsignedSaturatedAdd8(u8 left, u8 right) } // 16-bit unsigned saturated addition -u16 ARMul_UnsignedSaturatedAdd16(u16 left, u16 right) -{ +u16 ARMul_UnsignedSaturatedAdd16(u16 left, u16 right) { u16 result = left + right; if (result < left) @@ -153,8 +140,7 @@ u16 ARMul_UnsignedSaturatedAdd16(u16 left, u16 right) } // 8-bit unsigned saturated subtraction -u8 ARMul_UnsignedSaturatedSub8(u8 left, u8 right) -{ +u8 ARMul_UnsignedSaturatedSub8(u8 left, u8 right) { if (left <= right) return 0; @@ -162,8 +148,7 @@ u8 ARMul_UnsignedSaturatedSub8(u8 left, u8 right) } // 16-bit unsigned saturated subtraction -u16 ARMul_UnsignedSaturatedSub16(u16 left, u16 right) -{ +u16 ARMul_UnsignedSaturatedSub16(u16 left, u16 right) { if (left <= right) return 0; @@ -171,16 +156,14 @@ u16 ARMul_UnsignedSaturatedSub16(u16 left, u16 right) } // Signed saturation. -u32 ARMul_SignedSatQ(s32 value, u8 shift, bool* saturation_occurred) -{ +u32 ARMul_SignedSatQ(s32 value, u8 shift, bool* saturation_occurred) { const u32 max = (1 << shift) - 1; const s32 top = (value >> shift); if (top > 0) { *saturation_occurred = true; return max; - } - else if (top < -1) { + } else if (top < -1) { *saturation_occurred = true; return ~max; } @@ -190,8 +173,7 @@ u32 ARMul_SignedSatQ(s32 value, u8 shift, bool* saturation_occurred) } // Unsigned saturation -u32 ARMul_UnsignedSatQ(s32 value, u8 shift, bool* saturation_occurred) -{ +u32 ARMul_UnsignedSatQ(s32 value, u8 shift, bool* saturation_occurred) { const u32 max = (1 << shift) - 1; if (value < 0) { |