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clean-up

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Folkert van Heusden 2025-04-04 21:20:41 +02:00
parent a0647cc250
commit 7919937fd3
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
1 changed files with 3 additions and 7 deletions
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10
cpu.cpp
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@ -834,18 +834,15 @@ bool cpu::additional_double_operand_instructions(const uint16_t instr)
else if (shift <= 15) { else if (shift <= 15) {
R <<= shift; R <<= shift;
setPSW_c(R & 0x10000); setPSW_c(R & 0x10000);
setPSW_v(SIGN(oldR, wm_word) != SIGN(R, wm_word));
} }
else if (shift < 32) { else if (shift < 32) {
setPSW_c((R << (shift - 16)) & 1); setPSW_c((R << (shift - 16)) & 1);
R = 0; R = 0;
setPSW_v(SIGN(oldR, wm_word) != SIGN(R, wm_word));
} }
else if (shift == 32) { else if (shift == 32) {
R = -sign; R = -sign;
setPSW_c(sign); setPSW_c(sign);
setPSW_v(SIGN(R, wm_word) != SIGN(oldR, wm_word));
} }
else { else {
int shift_n = 64 - shift; int shift_n = 64 - shift;
@ -856,10 +853,10 @@ bool cpu::additional_double_operand_instructions(const uint16_t instr)
R >>= 1; R >>= 1;
R |= sign_extend; R |= sign_extend;
} }
setPSW_v(SIGN(R, wm_word) != SIGN(oldR, wm_word));
} }
setPSW_v(SIGN(oldR, wm_word) != SIGN(R, wm_word));
R &= 0xffff; R &= 0xffff;
setPSW_n(SIGN(R, wm_word)); setPSW_n(SIGN(R, wm_word));
@ -872,13 +869,12 @@ bool cpu::additional_double_operand_instructions(const uint16_t instr)
case 3: { // ASHC case 3: { // ASHC
uint32_t R0R1 = (uint32_t(get_register(reg)) << 16) | get_register(reg | 1); uint32_t R0R1 = (uint32_t(get_register(reg)) << 16) | get_register(reg | 1);
bool sign = R0R1 & 0x80000000;
auto g_dst = getGAM(dst_mode, dst_reg, wm_word); auto g_dst = getGAM(dst_mode, dst_reg, wm_word);
addToMMR1(g_dst); addToMMR1(g_dst);
uint16_t shift = g_dst.value.value() & 077; uint16_t shift = g_dst.value.value() & 077;
bool sign = R0R1 & 0x80000000;
setPSW_v(false); setPSW_v(false);
if (shift == 0) if (shift == 0)