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rk65c02/test/test_emulation.c
Radosław Kujawa 13ef3e2d08 Add PHX, PLX, PHY, PLY emulation and test cases.
2017-01-25 13:14:00 +01:00

539 lines
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C
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#include <atf-c.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include "bus.h"
#include "rk65c02.h"
#define ROM_LOAD_ADDR 0xC000
bool rom_start(rk65c02emu_t *, const char *);
bool
rom_start(rk65c02emu_t *e, const char *name)
{
e->regs.PC = ROM_LOAD_ADDR;
if(!bus_load_file(e->bus, ROM_LOAD_ADDR, name))
return false;
rk65c02_start(e);
return true;
}
ATF_TC_WITHOUT_HEAD(emul_bit);
ATF_TC_BODY(emul_bit, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* BIT immediate */
e.regs.A = 0x40;
ATF_REQUIRE(rom_start(&e, "test_emulation_bit_imm.rom"));
ATF_CHECK(!(e.regs.P & P_ZERO));
ATF_CHECK(e.regs.P & P_SIGN_OVERFLOW);
ATF_CHECK(!(e.regs.P & P_NEGATIVE));
/* BIT zero page */
e.regs.A = 0x40;
bus_write_1(&b, 0x10, 0x80);
ATF_REQUIRE(rom_start(&e, "test_emulation_bit_zp.rom"));
ATF_CHECK(e.regs.P & P_ZERO);
ATF_CHECK(!(e.regs.P & P_SIGN_OVERFLOW));
ATF_CHECK(e.regs.P & P_NEGATIVE);
/* BIT zero page X */
e.regs.A = 0x40;
e.regs.X = 0x1;
bus_write_1(&b, 0x10, 0x40);
ATF_REQUIRE(rom_start(&e, "test_emulation_bit_zpx.rom"));
ATF_CHECK(!(e.regs.P & P_ZERO));
ATF_CHECK(e.regs.P & P_SIGN_OVERFLOW);
ATF_CHECK(!(e.regs.P & P_NEGATIVE));
/* BIT absolute */
e.regs.A = 0x80;
bus_write_1(&b, 0x2010, 0x80);
ATF_REQUIRE(rom_start(&e, "test_emulation_bit_abs.rom"));
ATF_CHECK(!(e.regs.P & P_ZERO));
ATF_CHECK(!(e.regs.P & P_SIGN_OVERFLOW));
ATF_CHECK(e.regs.P & P_NEGATIVE);
/* BIT absolute X */
e.regs.A = 0x40;
e.regs.X = 0x2;
bus_write_1(&b, 0x2010, 0x80);
ATF_REQUIRE(rom_start(&e, "test_emulation_bit_absx.rom"));
ATF_CHECK(e.regs.P & P_ZERO);
ATF_CHECK(!(e.regs.P & P_SIGN_OVERFLOW));
ATF_CHECK(e.regs.P & P_NEGATIVE);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_dex_dey);
ATF_TC_BODY(emul_dex_dey, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* DEX */
e.regs.X = 0x1;
ATF_REQUIRE(rom_start(&e, "test_emulation_dex.rom"));
ATF_CHECK(e.regs.X == 0x0);
/* DEX underflow */
ATF_REQUIRE(rom_start(&e, "test_emulation_dex.rom"));
ATF_CHECK(e.regs.X == 0xFF);
/* DEY */
e.regs.Y = 0x1;
ATF_REQUIRE(rom_start(&e, "test_emulation_dey.rom"));
ATF_CHECK(e.regs.Y == 0x0);
/* DEY underflow */
ATF_REQUIRE(rom_start(&e, "test_emulation_dey.rom"));
ATF_CHECK(e.regs.Y == 0xFF);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_inx_iny);
ATF_TC_BODY(emul_inx_iny, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* INX */
e.regs.X = 0;
ATF_REQUIRE(rom_start(&e, "test_emulation_inx.rom"));
ATF_CHECK(e.regs.X == 0x1);
/* INX overflow */
e.regs.X = 0xFF;
ATF_REQUIRE(rom_start(&e, "test_emulation_inx.rom"));
ATF_CHECK(e.regs.X == 0x0);
/* INY */
e.regs.Y = 0;
ATF_REQUIRE(rom_start(&e, "test_emulation_iny.rom"));
ATF_CHECK(e.regs.Y == 0x1);
/* INY overflow */
e.regs.Y = 0xFF;
ATF_REQUIRE(rom_start(&e, "test_emulation_iny.rom"));
ATF_CHECK(e.regs.Y == 0x0);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_lda);
ATF_TC_BODY(emul_lda, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* LDA immediate */
ATF_REQUIRE(rom_start(&e, "test_emulation_lda_imm.rom"));
/* ATF_CHECK(e.state == STOPPED); // separate test case for states? */
ATF_CHECK(e.regs.PC == ROM_LOAD_ADDR+3); // separate test case for PC? */
ATF_CHECK(e.regs.A == 0xAF);
/* LDA zero page */
bus_write_1(&b, 0x10, 0xAE);
ATF_REQUIRE(rom_start(&e, "test_emulation_lda_zp.rom"));
ATF_CHECK(e.regs.A == 0xAE);
/* LDA absolute */
bus_write_1(&b, 0x2F5A, 0xEA);
ATF_REQUIRE(rom_start(&e, "test_emulation_lda_abs.rom"));
ATF_CHECK(e.regs.A == 0xEA);
/* LDA absolute X */
bus_write_1(&b, 0x2F5A, 0xEB);
e.regs.X = 0x5A;
ATF_REQUIRE(rom_start(&e, "test_emulation_lda_absx.rom"));
ATF_CHECK(e.regs.A == 0xEB);
/* LDA absolute X */
bus_write_1(&b, 0x2F5E, 0xEC);
e.regs.Y = 0x5E;
ATF_REQUIRE(rom_start(&e, "test_emulation_lda_absy.rom"));
ATF_CHECK(e.regs.A == 0xEC);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_stz);
ATF_TC_BODY(emul_stz, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* STZ zp */
bus_write_1(&b, 0x10, 0xAA);
ATF_REQUIRE(rom_start(&e, "test_emulation_stz_zp.rom"));
ATF_CHECK(bus_read_1(&b, 0x10) == 0x00);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_clc_sec);
ATF_TC_BODY(emul_clc_sec, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* SEC */
e.regs.P &= ~P_CARRY;
ATF_REQUIRE(rom_start(&e, "test_emulation_sec.rom"));
ATF_CHECK(e.regs.P & P_CARRY);
/* CLC */
ATF_REQUIRE(rom_start(&e, "test_emulation_clc.rom"));
ATF_CHECK(e.regs.P ^ P_CARRY);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_and);
ATF_TC_BODY(emul_and, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* AND immediate */
e.regs.A = 0xFF;
ATF_REQUIRE(rom_start(&e, "test_emulation_and_imm.rom"));
ATF_CHECK(e.regs.A == 0xAA);
/* AND zero page */
/* bus_write_1(&b, 0x10, 0xAE);
ATF_REQUIRE(rom_start(&e, "test_emulation_and_zp.rom"));
ATF_CHECK(e.regs.A == 0xAE);*/
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_nop);
ATF_TC_BODY(emul_nop, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
e.regs.PC = ROM_LOAD_ADDR;
ATF_REQUIRE(rom_start(&e, "test_emulation_nop.rom"));
ATF_CHECK(e.regs.PC == ROM_LOAD_ADDR+2);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_sta);
ATF_TC_BODY(emul_sta, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* STA zero page */
e.regs.A = 0xAA;
ATF_REQUIRE(rom_start(&e, "test_emulation_sta_zp.rom"));
ATF_CHECK(bus_read_1(&b, 0x20) == 0xAA);
/* STA zero page X */
e.regs.A = 0x55;
e.regs.X = 0x1;
ATF_REQUIRE(rom_start(&e, "test_emulation_sta_zpx.rom"));
ATF_CHECK(bus_read_1(&b, 0x20) == 0x55);
/* STA absolute */
e.regs.A = 0xAA;
ATF_REQUIRE(rom_start(&e, "test_emulation_sta_abs.rom"));
ATF_CHECK(bus_read_1(&b, 0x2010) == 0xAA);
/* STA absolute X */
e.regs.A = 0x55;
e.regs.X = 0x10;
ATF_REQUIRE(rom_start(&e, "test_emulation_sta_absx.rom"));
ATF_CHECK(bus_read_1(&b, 0x2010) == 0x55);
/* STA absolute Y */
e.regs.A = 0xAA;
e.regs.X = 0;
e.regs.Y = 0x1;
ATF_REQUIRE(rom_start(&e, "test_emulation_sta_absy.rom"));
ATF_CHECK(bus_read_1(&b, 0x2010) == 0xAA);
/* STA indirect zero */
e.regs.A = 0x55;
bus_write_1(&b, 0x25, 0x10);
bus_write_1(&b, 0x26, 0x20);
ATF_REQUIRE(rom_start(&e, "test_emulation_sta_izp.rom"));
ATF_CHECK(bus_read_1(&b, 0x2010) == 0x55);
/* STA indirect zero page X */
e.regs.A = 0xAA;
e.regs.X = 0x4;
e.regs.Y = 0;
ATF_REQUIRE(rom_start(&e, "test_emulation_sta_izpx.rom"));
ATF_CHECK(bus_read_1(&b, 0x2010) == 0xAA);
/* STA indirect zero page Y */
e.regs.A = 0x54;
e.regs.X = 0;
e.regs.Y = 0x1;
ATF_REQUIRE(rom_start(&e, "test_emulation_sta_izpy.rom"));
ATF_CHECK(bus_read_1(&b, 0x2010) == 0x55);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_ora);
ATF_TC_BODY(emul_ora, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* ORA immediate */
e.regs.A = 0x55;
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_imm.rom"));
ATF_CHECK(e.regs.A == 0xFF);
/* ORA zero page */
e.regs.A = 0xAA;
bus_write_1(&b, 0x10, 0x55);
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_zp.rom"));
ATF_CHECK(e.regs.A == 0xFF);
/* ORA zero page X */
e.regs.A = 0xAA;
e.regs.X = 0x11;
bus_write_1(&b, 0x21, 0x55);
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_zpx.rom"));
ATF_CHECK(e.regs.A == 0xFF);
/* ORA absolute */
e.regs.A = 0x55;
bus_write_1(&b, 0x2A01, 0xAA);
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_abs.rom"));
ATF_CHECK(e.regs.A == 0xFF);
/* ORA absolute X */
e.regs.A = 0xAA;
e.regs.X = 0x1;
bus_write_1(&b, 0x2A01, 0x55);
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_absx.rom"));
ATF_CHECK(e.regs.A == 0xFF);
/* ORA absolute Y */
e.regs.A = 0x55;
e.regs.X = 0;
e.regs.Y = 0x2;
bus_write_1(&b, 0x2A02, 0xAA);
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_absy.rom"));
ATF_CHECK(e.regs.A == 0xFF);
/* ORA indirect zero */
e.regs.A = 0xAA;
bus_write_1(&b, 0x2A04, 0x55);
bus_write_1(&b, 0x12, 0x04);
bus_write_1(&b, 0x13, 0x2A);
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_izp.rom"));
ATF_CHECK(e.regs.A == 0xFF);
/* ORA indirect zero page X */
e.regs.A = 0xAA;
e.regs.X = 0x2;
e.regs.Y = 0;
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_izpx.rom"));
ATF_CHECK(e.regs.A == 0xFF);
/* ORA indirect zero page Y */
e.regs.A = 0xAA;
e.regs.X = 0;
e.regs.Y = 0x1;
bus_write_1(&b, 0x2A04, 0x54);
bus_write_1(&b, 0x14, 0x04);
bus_write_1(&b, 0x15, 0x2A);
ATF_REQUIRE(rom_start(&e, "test_emulation_ora_izpy.rom"));
ATF_CHECK(e.regs.A == 0xFF);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_txa_tya_tax_tay);
ATF_TC_BODY(emul_txa_tya_tax_tay, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
e.regs.A = 0x0;
e.regs.X = 0xAA;
e.regs.Y = 0x55;
ATF_REQUIRE(rom_start(&e, "test_emulation_txa.rom"));
ATF_CHECK(e.regs.A == 0xAA);
ATF_REQUIRE(rom_start(&e, "test_emulation_tya.rom"));
ATF_CHECK(e.regs.A == 0x55);
ATF_REQUIRE(rom_start(&e, "test_emulation_tax.rom"));
ATF_CHECK(e.regs.X == 0x55);
e.regs.A = 0xFF;
ATF_REQUIRE(rom_start(&e, "test_emulation_tay.rom"));
ATF_CHECK(e.regs.A == 0xFF);
bus_finish(&b);
}
/* test stack operation and stack related opcodes - PLA, PHA... */
ATF_TC_WITHOUT_HEAD(emul_stack);
ATF_TC_BODY(emul_stack, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* place 0xAA on stack */
e.regs.SP = 0xFF;
e.regs.A = 0xAA;
ATF_REQUIRE(rom_start(&e, "test_emulation_pha.rom"));
ATF_CHECK(e.regs.SP == 0xFE);
ATF_CHECK(bus_read_1(e.bus, STACK_END) == 0xAA);
/*
* Run again to see if stack pointer further decrements and we'll
* end up with one more value on stack.
*/
e.regs.PC = ROM_LOAD_ADDR;
e.regs.A = 0xAB;
rk65c02_start(&e);
ATF_CHECK(e.regs.SP == 0xFD);
ATF_CHECK(bus_read_1(e.bus, STACK_END) == 0xAA);
ATF_CHECK(bus_read_1(e.bus, STACK_END-1) == 0xAB);
/*
* Now let's see if loading back into accumulator works.
*/
e.regs.A = 0x0;
ATF_REQUIRE(rom_start(&e, "test_emulation_pla.rom"));
ATF_CHECK(e.regs.SP == 0xFE);
ATF_CHECK(e.regs.A == 0xAB);
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_php_plp);
ATF_TC_BODY(emul_php_plp, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
e.regs.SP = 0xFF;
e.regs.P |= P_CARRY|P_ZERO|P_UNDEFINED;
ATF_REQUIRE(rom_start(&e, "test_emulation_php.rom"));
ATF_CHECK(e.regs.SP == 0xFE);
ATF_CHECK(bus_read_1(e.bus, STACK_END) == (P_CARRY|P_ZERO|P_UNDEFINED));
/*
* Now let's see if loading back into accumulator works.
*/
bus_write_1(e.bus, STACK_END, P_CARRY|P_DECIMAL);
ATF_REQUIRE(rom_start(&e, "test_emulation_plp.rom"));
ATF_CHECK(e.regs.SP == 0xFF);
ATF_CHECK(e.regs.P == (P_CARRY|P_DECIMAL|P_UNDEFINED));
bus_finish(&b);
}
ATF_TC_WITHOUT_HEAD(emul_phx_phy_plx_ply);
ATF_TC_BODY(emul_phx_phy_plx_ply, tc)
{
rk65c02emu_t e;
bus_t b;
b = bus_init();
e = rk65c02_init(&b);
/* check push X to stack */
e.regs.X = 0xAA;
e.regs.SP = 0xFF;
ATF_REQUIRE(rom_start(&e, "test_emulation_phx.rom"));
ATF_CHECK(e.regs.SP == 0xFE);
ATF_CHECK(bus_read_1(e.bus, STACK_END) == 0xAA);
/* check pull X from stack */
e.regs.X = 0;
ATF_REQUIRE(rom_start(&e, "test_emulation_plx.rom"));
ATF_CHECK(e.regs.SP == 0xFF);
ATF_CHECK(e.regs.X == 0xAA);
/* check push Y to stack */
e.regs.Y = 0x55;
e.regs.SP = 0xFF;
ATF_REQUIRE(rom_start(&e, "test_emulation_phy.rom"));
ATF_CHECK(e.regs.SP == 0xFE);
ATF_CHECK(bus_read_1(e.bus, STACK_END) == 0x55);
/* check pull X from stack */
e.regs.Y = 0xFF;
ATF_REQUIRE(rom_start(&e, "test_emulation_ply.rom"));
ATF_CHECK(e.regs.SP == 0xFF);
ATF_CHECK(e.regs.Y == 0x55);
bus_finish(&b);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, emul_and);
ATF_TP_ADD_TC(tp, emul_bit);
ATF_TP_ADD_TC(tp, emul_dex_dey);
ATF_TP_ADD_TC(tp, emul_clc_sec);
ATF_TP_ADD_TC(tp, emul_inx_iny);
ATF_TP_ADD_TC(tp, emul_lda);
ATF_TP_ADD_TC(tp, emul_nop);
ATF_TP_ADD_TC(tp, emul_ora);
ATF_TP_ADD_TC(tp, emul_stz);
ATF_TP_ADD_TC(tp, emul_php_plp);
ATF_TP_ADD_TC(tp, emul_phx_phy_plx_ply);
ATF_TP_ADD_TC(tp, emul_stack);
ATF_TP_ADD_TC(tp, emul_txa_tya_tax_tay);
ATF_TP_ADD_TC(tp, emul_sta);
return (atf_no_error());
}
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