6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-06-29 00:29:34 +00:00
Code Issues Projects Releases Wiki Activity

Performed some quick tidying.

Browse Source
This commit is contained in:
Thomas Harte 2017-05-28 00:12:42 -04:00
parent 76f03900d2
commit ed3e38ac31
1 changed files with 45 additions and 70 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

115
Processors/Z80/Z80.hpp
View File

@ -1063,119 +1063,94 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
#pragma mark - Rotation and shifting
#define set_rotate_flags() \
bit3_result_ = bit5_result_ = a_; \
carry_flag_ = new_carry; \
subtract_flag_ = half_carry_flag_ = 0;
case MicroOp::RLA: {
uint8_t new_carry = a_ >> 7;
a_ = (uint8_t)((a_ << 1) | carry_flag_);
bit3_result_ = bit5_result_ = a_;
carry_flag_ = new_carry;
subtract_flag_ = half_carry_flag_ = 0;
set_rotate_flags();
} break;
case MicroOp::RRA: {
uint8_t new_carry = a_ & 1;
a_ = (uint8_t)((a_ >> 1) | (carry_flag_ << 7));
set_rotate_flags();
} break;
case MicroOp::RLCA: {
uint8_t new_carry = a_ >> 7;
a_ = (uint8_t)((a_ << 1) | new_carry);
bit3_result_ = bit5_result_ = a_;
carry_flag_ = new_carry;
subtract_flag_ = half_carry_flag_ = 0;
} break;
case MicroOp::RRA: {
uint8_t newCarry = a_ & 1;
a_ = (uint8_t)((a_ >> 1) | (carry_flag_ << 7));
bit3_result_ = bit5_result_ = a_;
carry_flag_ = newCarry;
subtract_flag_ = half_carry_flag_ = 0;
set_rotate_flags();
} break;
case MicroOp::RRCA: {
uint8_t newCarry = a_ & 1;
a_ = (uint8_t)((a_ >> 1) | (newCarry << 7));
bit5_result_ = bit3_result_ = a_;
carry_flag_ = newCarry;
subtract_flag_ = half_carry_flag_ = 0;
uint8_t new_carry = a_ & 1;
a_ = (uint8_t)((a_ >> 1) | (new_carry << 7));
set_rotate_flags();
} break;
case MicroOp::RLC: {
#undef set_rotate_flags
#define set_shift_flags() \
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source; \
set_parity(sign_result_); \
half_carry_flag_ = 0; \
subtract_flag_ = 0;
case MicroOp::RLC:
carry_flag_ = *(uint8_t *)operation->source >> 7;
*(uint8_t *)operation->source = (uint8_t)((*(uint8_t *)operation->source << 1) | carry_flag_);
set_shift_flags();
break;
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source;
set_parity(sign_result_);
half_carry_flag_ = 0;
subtract_flag_ = 0;
} break;
case MicroOp::RRC: {
case MicroOp::RRC:
carry_flag_ = *(uint8_t *)operation->source & 1;
*(uint8_t *)operation->source = (uint8_t)((*(uint8_t *)operation->source >> 1) | (carry_flag_ << 7));
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source;
set_parity(sign_result_);
half_carry_flag_ = 0;
subtract_flag_ = 0;
} break;
set_shift_flags();
break;
case MicroOp::RL: {
uint8_t next_carry = *(uint8_t *)operation->source >> 7;
*(uint8_t *)operation->source = (uint8_t)((*(uint8_t *)operation->source << 1) | carry_flag_);
carry_flag_ = next_carry;
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source;
set_parity(sign_result_);
half_carry_flag_ = 0;
subtract_flag_ = 0;
set_shift_flags();
} break;
case MicroOp::RR: {
uint8_t next_carry = *(uint8_t *)operation->source & 1;
*(uint8_t *)operation->source = (uint8_t)((*(uint8_t *)operation->source >> 1) | (carry_flag_ << 7));
carry_flag_ = next_carry;
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source;
set_parity(sign_result_);
half_carry_flag_ = 0;
subtract_flag_ = 0;
set_shift_flags();
} break;
case MicroOp::SLA: {
case MicroOp::SLA:
carry_flag_ = *(uint8_t *)operation->source >> 7;
*(uint8_t *)operation->source = (uint8_t)(*(uint8_t *)operation->source << 1);
set_shift_flags();
break;
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source;
set_parity(sign_result_);
half_carry_flag_ = 0;
subtract_flag_ = 0;
} break;
case MicroOp::SRA: {
case MicroOp::SRA:
carry_flag_ = *(uint8_t *)operation->source & 1;
*(uint8_t *)operation->source = (uint8_t)((*(uint8_t *)operation->source >> 1) | (*(uint8_t *)operation->source & 0x80));
set_shift_flags();
break;
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source;
set_parity(sign_result_);
half_carry_flag_ = 0;
subtract_flag_ = 0;
} break;
case MicroOp::SLL: {
case MicroOp::SLL:
carry_flag_ = *(uint8_t *)operation->source >> 7;
*(uint8_t *)operation->source = (uint8_t)(*(uint8_t *)operation->source << 1) | 1;
set_shift_flags();
break;
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source;
set_parity(sign_result_);
half_carry_flag_ = 0;
subtract_flag_ = 0;
} break;
case MicroOp::SRL: {
case MicroOp::SRL:
carry_flag_ = *(uint8_t *)operation->source & 1;
*(uint8_t *)operation->source = (uint8_t)((*(uint8_t *)operation->source >> 1));
set_shift_flags();
break;
sign_result_ = zero_result_ = bit5_result_ = bit3_result_ = *(uint8_t *)operation->source;
set_parity(sign_result_);
half_carry_flag_ = 0;
subtract_flag_ = 0;
} break;
#undef set_shift_flags
#pragma mark - Interrupt state