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Merge pull request #2585 from MerryMage/sxtb16-sxtab16

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dyncom: Correct SXTAB16 and SXTB16
This commit is contained in:
bunnei 2017-02-19 22:45:46 -05:00 committed by GitHub
parent 7628f3a6fc b125388152
commit bb448ae66f
1 changed files with 4 additions and 4 deletions
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8
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@ -3928,13 +3928,13 @@ SXTB16_INST : {
if (inst_cream->Rn == 15) { if (inst_cream->Rn == 15) {
u32 lo = (u32)(s8)rm_val; u32 lo = (u32)(s8)rm_val;
u32 hi = (u32)(s8)(rm_val >> 16); u32 hi = (u32)(s8)(rm_val >> 16);
RD = (lo | (hi << 16)); RD = (lo & 0xFFFF) | (hi << 16);
} }
// SXTAB16 // SXTAB16
else { else {
u32 lo = (rn_val & 0xFFFF) + (u32)(s8)(rm_val & 0xFF); u32 lo = rn_val + (u32)(s8)(rm_val & 0xFF);
u32 hi = ((rn_val >> 16) & 0xFFFF) + (u32)(s8)((rm_val >> 16) & 0xFF); u32 hi = (rn_val >> 16) + (u32)(s8)((rm_val >> 16) & 0xFF);
RD = (lo | (hi << 16)); RD = (lo & 0xFFFF) | (hi << 16);
} }
} }