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another ASH/ASHC fix

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folkert van heusden 2022-03-24 18:54:24 +01:00
parent 6951e1b520
commit 1095e4823b
1 changed files with 4 additions and 5 deletions
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9
cpu.cpp
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@ -521,9 +521,9 @@ bool cpu::additional_double_operand_instructions(const uint16_t instr)
else {
// extend sign-bit
if (R & 0x8000) // convert to unsigned 32b int & extend sign
R = (uint32_t(R) | 0xffff0000) >> (64 - shift - 1);
R = (uint32_t(R) | 0xffff0000) >> (64 - (shift - 1));
else
R >>= 64 - shift - 1;
R >>= 64 - (shift - 1);
setPSW_c(R & 1);
R >>= 1;
@ -556,10 +556,9 @@ bool cpu::additional_double_operand_instructions(const uint16_t instr)
else {
// extend sign-bit
if (R0R1 & 0x80000000) // convert to unsigned 64b int & extend sign
R0R1 = (uint64_t(R0R1) | 0xffffffff0000) >> (64 - shift - 1);
R0R1 = (uint64_t(R0R1) | 0xffffffff00000000ll) >> (64 - (shift - 1));
else
R0R1 >>= 64 - shift - 1;
R0R1 >>= 64 - (shift - 1);
setPSW_c(R0R1 & 1);