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Added ability to write to zero register (discard) w/ S

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Themis Demetriades 2024-06-05 22:21:32 +01:00
parent 14fbb7e4fc
commit 294b03ddde
1 changed files with 3 additions and 1 deletions
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4
src/execute.c
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@ -74,7 +74,9 @@ static dword readRegister(Machine *state, a64inst_regSpecifier reg, a64inst_regT
// and truncating the value being written when it can't fit in the specified register // and truncating the value being written when it can't fit in the specified register
static void writeRegister(Machine *state, a64inst_regSpecifier reg, a64inst_regType regType, dword value) { static void writeRegister(Machine *state, a64inst_regSpecifier reg, a64inst_regType regType, dword value) {
assert(reg <= REGISTER_COUNT); assert(reg <= REGISTER_COUNT);
state->registers[reg] = truncateValue(value, regType); if (reg != ZERO_REGISTER) {
state->registers[reg] = truncateValue(value, regType);
}
} }
// Returns the position of the MSB of the given register type // Returns the position of the MSB of the given register type