Lets make SUB use the common OverflowFromSUB function.
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@ -302,12 +302,13 @@ TEMPLATE static u32 FASTCALL OP_SUB_IMM3(const u32 i)
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{
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u32 imm3 = (i>>6) & 0x07;
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u32 Rn = cpu->R[REG_NUM(i, 3)];
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u32 tmp = Rn - imm3;
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cpu->R[REG_NUM(i, 0)] = Rn - imm3;
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cpu->CPSR.bits.N = BIT31(cpu->R[REG_NUM(i, 0)]);
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cpu->CPSR.bits.Z = (cpu->R[REG_NUM(i, 0)] == 0);
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cpu->R[REG_NUM(i, 0)] = tmp;
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cpu->CPSR.bits.N = BIT31(tmp);
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cpu->CPSR.bits.Z = (tmp == 0);
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cpu->CPSR.bits.C = !BorrowFrom(Rn, imm3);
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cpu->CPSR.bits.V = SIGNED_UNDERFLOW(Rn,imm3,cpu->R[REG_NUM(i, 0)]);
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cpu->CPSR.bits.V = OverflowFromSUB(tmp, Rn, imm3);
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return 1;
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}
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@ -316,12 +317,13 @@ TEMPLATE static u32 FASTCALL OP_SUB_IMM8(const u32 i)
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{
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u32 imm8 = (i & 0xFF);
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u32 Rd = cpu->R[REG_NUM(i, 8)];
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u32 tmp = Rd - imm8;
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cpu->R[REG_NUM(i, 8)] = Rd - imm8;
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cpu->CPSR.bits.N = BIT31(cpu->R[REG_NUM(i, 8)]);
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cpu->CPSR.bits.Z = (cpu->R[REG_NUM(i, 8)] == 0);
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cpu->R[REG_NUM(i, 8)] = tmp;
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cpu->CPSR.bits.N = BIT31(tmp);
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cpu->CPSR.bits.Z = (tmp == 0);
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cpu->CPSR.bits.C = !BorrowFrom(Rd, imm8);
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cpu->CPSR.bits.V = SIGNED_UNDERFLOW(Rd,imm8,cpu->R[REG_NUM(i, 8)]);
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cpu->CPSR.bits.V = OverflowFromSUB(tmp, Rd, imm8);
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return 1;
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}
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@ -330,12 +332,13 @@ TEMPLATE static u32 FASTCALL OP_SUB_REG(const u32 i)
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{
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u32 Rn = cpu->R[REG_NUM(i, 3)];
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u32 Rm = cpu->R[REG_NUM(i, 6)];
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u32 tmp = Rn - Rm;
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cpu->R[REG_NUM(i, 0)] = Rn - Rm;
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cpu->CPSR.bits.N = BIT31(cpu->R[REG_NUM(i, 0)]);
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cpu->CPSR.bits.Z = (cpu->R[REG_NUM(i, 0)] == 0);
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cpu->R[REG_NUM(i, 0)] = tmp;
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cpu->CPSR.bits.N = BIT31(tmp);
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cpu->CPSR.bits.Z = (tmp == 0);
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cpu->CPSR.bits.C = !BorrowFrom(Rn, Rm);
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cpu->CPSR.bits.V = SIGNED_UNDERFLOW(Rn,Rm,cpu->R[REG_NUM(i, 0)]);
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cpu->CPSR.bits.V = OverflowFromSUB(tmp, Rn, Rm);
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return 1;
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}
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