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armemu: Fix UXTB16

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Rotation bits are 10 and 11, not 9 and 10.
This commit is contained in:
Lioncash 2014-12-14 23:00:29 -05:00
parent 1ee740898a
commit 2b0acd36e1
1 changed files with 12 additions and 12 deletions
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12
src/core/arm/interpreter/armemu.cpp
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@ -6103,12 +6103,12 @@ L_stm_s_takeabort:
}
case 0x6c:
if ((instr & 0xf03f0) == 0xf0070) { //uxtb16
u8 src1 = BITS(0, 3);
u8 tar = BITS(12, 15);
u32 base = state->Reg[src1];
u32 shamt = BITS(9,10)* 8;
u32 in = ((base << (32 - shamt)) | (base >> shamt));
state->Reg[tar] = in & 0x00FF00FF;
u8 rm_idx = BITS(0, 3);
u8 rd_idx = BITS(12, 15);
u32 rm_val = state->Reg[rm_idx];
u32 rotation = BITS(10, 11) * 8;
u32 in = ((rm_val << (32 - rotation)) | (rm_val >> rotation));
state->Reg[rd_idx] = in & 0x00FF00FF;
return 1;
} else
printf ("Unhandled v6 insn: uxtab16\n");