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Eliminate remaining macros.

This commit is contained in:
Thomas Harte 2024-01-16 22:42:20 -05:00
parent d85afc0caf
commit a1f6f2c7f7
1 changed files with 32 additions and 34 deletions
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66
Processors/6502/Implementation/6502Implementation.hpp
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@ -71,6 +71,27 @@ void Processor<personality, T, uses_ready_line>::run_for(const Cycles cycles) {
bus_value_ = &val;
};
const auto push = [&](uint8_t &val) {
const uint16_t targetAddress = s_ | 0x100;
--s_;
write_mem(val, targetAddress);
};
const auto page_crossing_stall_read = [&] {
if(is_65c02(personality)) {
throwaway_read(pc_.full - 1);
} else {
throwaway_read(address_.full);
}
};
const auto bra = [&](bool condition) {
++pc_.full;
if(condition) {
scheduled_program_counter_ = operations_[size_t(OperationsSlot::DoBRA)];
}
};
while(number_of_cycles > Cycles(0)) {
// Deal with a potential RDY state, if this 6502 has anything connected to ready.
@ -146,11 +167,6 @@ void Processor<personality, T, uses_ready_line>::run_for(const Cycles cycles) {
check_schedule();
continue;
#define push(v) {\
uint16_t targetAddress = s_ | 0x100; s_--;\
write_mem(v, targetAddress);\
}
case CycleIncPCPushPCH: pc_.full++; [[fallthrough]];
case CyclePushPCH: push(pc_.halves.high); break;
case CyclePushPCL: push(pc_.halves.low); break;
@ -159,13 +175,12 @@ void Processor<personality, T, uses_ready_line>::run_for(const Cycles cycles) {
case CyclePushX: push(x_); break;
case CyclePushY: push(y_); break;
case CycleNoWritePush: {
uint16_t targetAddress = s_ | 0x100; s_--;
uint16_t targetAddress = s_ | 0x100;
--s_;
read_mem(operand_, targetAddress);
}
break;
#undef push
case CycleReadFromS: throwaway_read(s_ | 0x100); break;
case CycleReadFromPC: throwaway_read(pc_.full); break;
@ -555,13 +570,6 @@ void Processor<personality, T, uses_ready_line>::run_for(const Cycles cycles) {
// MARK: - Addressing Mode Work
#define page_crossing_stall_read() \
if(is_65c02(personality)) { \
throwaway_read(pc_.full - 1); \
} else { \
throwaway_read(address_.full); \
}
case CycleAddXToAddressLow:
next_address_.full = address_.full + x_;
address_.halves.low = next_address_.halves.low;
@ -579,8 +587,6 @@ void Processor<personality, T, uses_ready_line>::run_for(const Cycles cycles) {
}
continue;
#undef page_crossing_stall_read
case CycleAddXToAddressLowRead:
next_address_.full = address_.full + x_;
address_.halves.low = next_address_.halves.low;
@ -675,23 +681,15 @@ void Processor<personality, T, uses_ready_line>::run_for(const Cycles cycles) {
// MARK: - Branching
#define BRA(condition) \
pc_.full++; \
if(condition) { \
scheduled_program_counter_ = operations_[size_t(OperationsSlot::DoBRA)]; \
}
case OperationBPL: BRA(!(flags_.negative_result&0x80)); continue;
case OperationBMI: BRA(flags_.negative_result&0x80); continue;
case OperationBVC: BRA(!flags_.overflow); continue;
case OperationBVS: BRA(flags_.overflow); continue;
case OperationBCC: BRA(!flags_.carry); continue;
case OperationBCS: BRA(flags_.carry); continue;
case OperationBNE: BRA(flags_.zero_result); continue;
case OperationBEQ: BRA(!flags_.zero_result); continue;
case OperationBRA: BRA(true); continue;
#undef BRA
case OperationBPL: bra(!(flags_.negative_result&0x80)); continue;
case OperationBMI: bra(flags_.negative_result&0x80); continue;
case OperationBVC: bra(!flags_.overflow); continue;
case OperationBVS: bra(flags_.overflow); continue;
case OperationBCC: bra(!flags_.carry); continue;
case OperationBCS: bra(flags_.carry); continue;
case OperationBNE: bra(flags_.zero_result); continue;
case OperationBEQ: bra(!flags_.zero_result); continue;
case OperationBRA: bra(true); continue;
case CycleAddSignedOperandToPC:
next_address_.full = uint16_t(pc_.full + int8_t(operand_));