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-rw-r--r--src/core/arm/interpreter/armemu.cpp18
1 files changed, 5 insertions, 13 deletions
diff --git a/src/core/arm/interpreter/armemu.cpp b/src/core/arm/interpreter/armemu.cpp
index 2873da897..9c6602f09 100644
--- a/src/core/arm/interpreter/armemu.cpp
+++ b/src/core/arm/interpreter/armemu.cpp
@@ -3100,7 +3100,6 @@ mainswitch:
break;
case 0x68: /* Store Word, No WriteBack, Post Inc, Reg. */
- //ichfly PKHBT PKHTB todo check this
if ((instr & 0x70) == 0x10) { //pkhbt
u8 idest = BITS(12, 15);
u8 rfis = BITS(16, 19);
@@ -3109,18 +3108,11 @@ mainswitch:
state->Reg[idest] = (state->Reg[rfis] & 0xFFFF) | ((state->Reg[rlast] << ishi) & 0xFFFF0000);
break;
} else if ((instr & 0x70) == 0x50) { //pkhtb
- const u8 rd_idx = BITS(12, 15);
- const u8 rn_idx = BITS(16, 19);
- const u8 rm_idx = BITS(0, 3);
- const u8 imm5 = BITS(7, 11);
-
- ARMword val;
- if (imm5 >= 32)
- val = (state->Reg[rm_idx] >> 31);
- else
- val = (state->Reg[rm_idx] >> imm5);
-
- state->Reg[rd_idx] = (val & 0xFFFF) | ((state->Reg[rn_idx]) & 0xFFFF0000);
+ u8 rd_idx = BITS(12, 15);
+ u8 rn_idx = BITS(16, 19);
+ u8 rm_idx = BITS(0, 3);
+ u8 imm5 = BITS(7, 11) ? BITS(7, 11) : 31;
+ state->Reg[rd_idx] = ((static_cast<s32>(state->Reg[rm_idx]) >> imm5) & 0xFFFF) | ((state->Reg[rn_idx]) & 0xFFFF0000);
break;
} else if (BIT (4)) {
#ifdef MODE32