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check_instr.c
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check_instr.c
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#include <check.h>
#include "emu.h"
#include "test.h"
#define PC_START 0
/* Make it harder to forget to add tests to suite. */
#pragma GCC diagnostic error "-Wunused-function"
static void
install_words(uint16_t *code, uint32_t addr, size_t sz)
{
memcpy(&flash[addr], code, sz);
}
static void
setup_machine(void)
{
// zero regs/mem, clear symbols
init();
}
static void
setup_machine22(void)
{
// zero regs/mem, clear symbols
init();
pc22 = true;
}
static void
setup_machine64(void)
{
// zero regs/mem, clear symbols
init();
pc_mem_max_64k = true;
}
static void
setup_machine256(void)
{
// zero regs/mem, clear symbols
init();
pc_mem_max_64k = true;
pc_mem_max_256b = true;
}
static void
teardown_machine(void)
{
destroy();
}
START_TEST(test_nop)
{
uint16_t code[] = {
0x0000,
0x0000,
};
install_words(code, PC_START, sizeof(code));
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
}
END_TEST
START_TEST(test_mov)
{
uint16_t code[] = {
0x2c00 | /*r_rrrr*/ 0x20f | /*ddddd*/ 0x1e0, /* mov r30,r31 */
0x2c00 | /*r_rrrr*/ 0x20e | /*ddddd*/ 0x050, /* mov r5,r30 */
0x2c00 | /*r_rrrr*/ 0x005 | /*ddddd*/ 0x000, /* mov r0,r5 */
};
install_words(code, PC_START, sizeof(code));
memory[31] = 0xab;
ck_assert_uint_eq(memory[30], 0);
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[30], 0xab);
ck_assert_uint_eq(memory[5], 0);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[5], 0xab);
ck_assert_uint_eq(memory[0], 0);
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
ck_assert_uint_eq(memory[0], 0xab);
}
END_TEST
START_TEST(test_or)
{
uint16_t code[] = {
0x2800 | /*r_rrrr*/ 0x20f | /*ddddd*/ 0x1e0, /* or r30,r31 */
0x2800 | /*r_rrrr*/ 0x20d | /*ddddd*/ 0x050, /* or r5,r29 */
0x2800 | /*r_rrrr*/ 0x005 | /*ddddd*/ 0x000, /* or r0,r5 */
};
install_words(code, PC_START, sizeof(code));
memory[31] = 0x0;
memory[30] = 0x0;
memory[29] = 0xaa;
memory[5] = 0x55;
memory[0] = 0xff;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
// OR(0, 0) = 0
ck_assert_uint_eq(memory[30], 0x0);
ck_assert_uint_eq(memory[SREG], SREG_Z);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
// OR(0xaa, 0x55) = 0xff
ck_assert_uint_eq(memory[5], 0xff);
ck_assert_uint_eq(memory[SREG], SREG_N | SREG_S);
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
// OR(0xff, 0xff) = 0xff
ck_assert_uint_eq(memory[0], 0xff);
ck_assert_uint_eq(memory[SREG], SREG_N | SREG_S);
}
END_TEST
START_TEST(test_ori)
{
uint16_t code[] = {
0x6000 | /*KKKK_KKKK*/ 0xf0f | /*dddd*/ 0x00, /* ori r16, $0xff */
0x6000 | /*KKKK_KKKK*/ 0x000 | /*dddd*/ 0x50, /* ori r21, $0x0 */
0x6000 | /*KKKK_KKKK*/ 0xa0a | /*dddd*/ 0xf0, /* ori r31, $0xaa */
};
install_words(code, PC_START, sizeof(code));
memory[31] = 0x55;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
// OR(0, 0xff) = 0xff
ck_assert_uint_eq(memory[16], 0xff);
ck_assert_uint_eq(memory[SREG], SREG_N | SREG_S);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
// OR(0, 0) = 0
ck_assert_uint_eq(memory[21], 0);
ck_assert_uint_eq(memory[SREG], SREG_Z);
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
// OR(0xaa, 0x55) = 0xff
ck_assert_uint_eq(memory[31], 0xff);
ck_assert_uint_eq(memory[SREG], SREG_N | SREG_S);
}
END_TEST
START_TEST(test_out)
{
uint16_t code[] = {
0xb800 | /*AA_AAAA*/ 0x60e | /*rrrrr*/ 0x1f0, /* out $3e, r31 */
};
install_words(code, PC_START, sizeof(code));
memory[31] = 0xab;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[IO_BASE + 0x3e], 0xab);
}
END_TEST
START_TEST(test_in)
{
uint16_t code[] = {
0xb000 | /*AA_AAAA*/ 0x60e | /*rrrrr*/ 0x1f0, /* in r31, $3e */
};
install_words(code, PC_START, sizeof(code));
memory[IO_BASE + 0x3e] = 0xab;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[31], 0xab);
}
END_TEST
START_TEST(test_push)
{
uint16_t code[] = {
0x920f | /*rrrrr*/ 0x1f0, /* push r31 */
};
install_words(code, PC_START, sizeof(code));
memory[31] = 0xab;
setsp(0xffff);
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(getsp(), 0xfffe);
ck_assert_uint_eq(memory[0xffff], 0xab);
}
END_TEST
START_TEST(test_movw)
{
uint16_t code[] = {
0x0100 | /*dddd*/ 0xe0 | /*rrrr*/ 0xf, /* mov r29:28, r31:r30 */
};
install_words(code, PC_START, sizeof(code));
memory[31] = 0xab;
memory[30] = 0xcd;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[29], memory[31]);
ck_assert_uint_eq(memory[28], memory[30]);
}
END_TEST
START_TEST(test_call)
{
uint16_t code[] = {
0x940e | /*kkkkk_k*/ 0x1f1, /* call 0x3fdead */
0xdead
};
install_words(code, PC_START, sizeof(code));
setsp(0xffff);
emulate1();
ck_assert_uint_eq(pc, 0xdead);
ck_assert_uint_eq(getsp(), 0xfffd);
ck_assert_uint_eq(memory[0xffff], (PC_START + 2) & 0xff);
ck_assert_uint_eq(memory[0xfffe], (PC_START + 2) >> 8);
}
END_TEST
START_TEST(test_call22)
{
uint16_t code[] = {
0x940e | /*kkkkk_k*/ 0x1f1, /* call 0x3fbeef */
0xbeef
};
install_words(code, PC_START, sizeof(code));
setsp(0xffff);
emulate1();
ck_assert_uint_eq(pc, 0x3fbeef);
ck_assert_uint_eq(getsp(), 0xfffc);
ck_assert_uint_eq(memory[0xffff], (PC_START + 2) & 0xff);
ck_assert_uint_eq(memory[0xfffe], ((PC_START + 2) >> 8) & 0xff);
ck_assert_uint_eq(memory[0xfffd], (PC_START + 2) >> 16);
}
END_TEST
START_TEST(test_mul)
{
uint16_t code[] = {
0x9c00 | 0x3fe, /* mul r31,r30 */
0x9c00 | 0x001, /* mul r0, r1 */
0x9c00 | 0x045, /* mul r4, r5 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[31] = 0xff;
memory[30] = 0xff;
memory[4] = 0x15;
memory[SREG] = sreg_start = 0xff & ~(SREG_Z | SREG_C);
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memword(0), 0xff * 0xff);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_C);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memword(0), 0xfe * 0x01);
ck_assert_uint_eq(memory[SREG], sreg_start);
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
ck_assert_uint_eq(memword(0), 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_Z);
}
END_TEST
START_TEST(test_muls)
{
uint16_t code[] = {
0x0200 | 0xfe, /* muls r31,r30 */
0x0200 | 0x45, /* muls r20, r21 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[31] = 0xff;
memory[30] = 0x2;
memory[20] = 0x15;
memory[SREG] = sreg_start = 0xff & ~(SREG_Z | SREG_C);
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memword(0), 0xfffe);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_C);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memword(0), 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_Z);
}
END_TEST
START_TEST(test_mulsu)
{
uint16_t code[] = {
0x0300 | 0x76, /* mulsu r23, r22 */
0x0300 | 0x45, /* mulsu r20, r21 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[23] = 0xff;
memory[22] = 0xff;
memory[20] = 0x15;
memory[SREG] = sreg_start = 0xff & ~(SREG_Z | SREG_C);
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memword(0), 0xff01);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_C);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memword(0), 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_Z);
}
END_TEST
START_TEST(test_adc)
{
uint16_t code[] = {
0x1c00 | 0x01, /* adc r0, r1 */
0x1c00 | 0x23, /* adc r2, r3 */
0x1c00 | 0x45, /* adc r4, r5 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[0] = 0xf0;
memory[1] = 0x0f;
sreg_start = SREG_I | SREG_T;
memory[SREG] = sreg_start | SREG_C;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[0], 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_C | SREG_Z | SREG_H);
memory[2] = 0x40;
memory[3] = 0x40;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[2], 0x81 /* Carry from previous instr */);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_V | SREG_N);
memory[4] = 0xff;
memory[5] = 0;
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
ck_assert_uint_eq(memory[4], 0xff);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_N | SREG_S);
}
END_TEST
START_TEST(test_add)
{
uint16_t code[] = {
0x0c00 | 0x01, /* add r0, r1 */
0x0c00 | 0x23, /* add r2, r3 */
0x0c00 | 0x45, /* add r4, r5 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[0] = 0xf1;
memory[1] = 0x0f;
memory[SREG] = sreg_start = SREG_I | SREG_T;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[0], 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_C | SREG_Z | SREG_H);
memory[2] = 0x40;
memory[3] = 0x40;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[2], 0x80);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_V | SREG_N);
memory[4] = 0xff;
memory[5] = 0;
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
ck_assert_uint_eq(memory[4], 0xff);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_N | SREG_S);
}
END_TEST
START_TEST(test_adiw)
{
uint16_t code[] = {
0x9600 | 0x00 | 0x5, /* addiw r25:24, $5 */
0x9600 | 0x30 | 0xcf, /* addiw r31:30, $3f */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[24] = 0xfb;
memory[25] = 0xff;
memory[SREG] = sreg_start = SREG_I | SREG_T | SREG_H;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[24], 0);
ck_assert_uint_eq(memory[25], 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_C | SREG_Z);
memory[30] = 0xff;
memory[31] = 0x7f;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[30], 0x3e);
ck_assert_uint_eq(memory[31], 0x80);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_V | SREG_N);
}
END_TEST
START_TEST(test_and)
{
uint16_t code[] = {
0x2000 | 0x01, /* and r0,r1 */
0x2000 | 0x45, /* and r4,r5 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[1] = 0xff;
memory[0] = 0xff;
memory[SREG] = sreg_start = SREG_I | SREG_T | SREG_H | SREG_C;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[0], 0xff);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_N | SREG_S);
memory[4] = 0xff;
memory[5] = 0;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[4], 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_Z);
}
END_TEST
START_TEST(test_andi)
{
uint16_t code[] = {
0x7000 | 0x00 | 0xf0f, /* andi r16, $ff */
0x7000 | 0x40 | 0, /* andi r20, $0 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[16] = 0xff;
memory[SREG] = sreg_start = SREG_I | SREG_T | SREG_H | SREG_C;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[16], 0xff);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_N | SREG_S);
memory[20] = 0xff;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[20], 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_Z);
}
END_TEST
START_TEST(test_asr)
{
uint16_t code[] = {
0x9405 | 0x1f0, /* asr r31 */
0x9405 | 0x1f0, /* asr r31 */
0x9405 | 0x1f0, /* asr r31 */
0x9405 | 0x1f0, /* asr r31 */
0x9405 | 0x1f0, /* asr r31 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[31] = 0xff;
memory[SREG] = sreg_start = SREG_I | SREG_T | SREG_H;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[31], 0xff);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_N | SREG_C | SREG_S);
memory[31] = 0x81;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[31], 0xc0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_N | SREG_C | SREG_S);
memory[31] = 0x7f;
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
ck_assert_uint_eq(memory[31], 0x3f);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_C | SREG_V | SREG_S);
memory[31] = 0x70;
emulate1();
ck_assert_uint_eq(pc, PC_START + 4);
ck_assert_uint_eq(memory[31], 0x38);
ck_assert_uint_eq(memory[SREG], sreg_start);
memory[31] = 0x1;
emulate1();
ck_assert_uint_eq(pc, PC_START + 5);
ck_assert_uint_eq(memory[31], 0);
ck_assert_uint_eq(memory[SREG],
sreg_start | SREG_C | SREG_Z | SREG_V | SREG_S);
}
END_TEST
START_TEST(test_bclr)
{
uint16_t code[] = {
0x9488 | 0x70, /* bclr I ("CLI" psuedo) */
0x9488 | 0x10, /* bclr Z */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[SREG] = sreg_start = 0xff;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[SREG], sreg_start & ~SREG_I);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[SREG], sreg_start & ~(SREG_I | SREG_Z));
}
END_TEST
START_TEST(test_bset)
{
uint16_t code[] = {
0x9408 | 0x60, /* bset T */
0x9408 | 0x30, /* bset V */
};
install_words(code, PC_START, sizeof(code));
memory[SREG] = 0;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[SREG], SREG_T);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[SREG], SREG_T | SREG_V);
}
END_TEST
START_TEST(test_bld)
{
uint16_t code[] = {
0xf800 | 0x1f0 | 0x4, /* bld r31, 4 */
0xf800 | 0x1f0 | 0x4, /* bld r31, 4 */
};
install_words(code, PC_START, sizeof(code));
memory[SREG] = SREG_T;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[31], 1 << 4);
memory[SREG] = 0;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[31], 0);
}
END_TEST
START_TEST(test_bst)
{
uint16_t code[] = {
0xfa00 | 0x1f0 | 0x4, /* bst r31, 4 */
0xfa00 | 0x1f0 | 0x4, /* bst r31, 4 */
};
install_words(code, PC_START, sizeof(code));
memory[SREG] = 0;
memory[31] = (1 << 4);
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[SREG], SREG_T);
memory[31] = 0;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[SREG], 0);
}
END_TEST
START_TEST(test_brb)
{
uint16_t code[] = {
0xf400 | 0x10 /*k=2*/ | 0x7 /*SREG_I*/, /* brbc I, 2 */
0 /* skipped */,
0xf000 | 0x1f8 /*k=63*/ | 0x0 /*SREG_C*/, /* brbs C, 63 */
0xf000 | 0x3f0 /*k=-2*/ | 0x6 /*SREG_T*/, /* brbs T, -2 */
};
install_words(code, PC_START, sizeof(code));
memory[SREG] = SREG_T | SREG_C;
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2 + 63 + 1);
}
END_TEST
START_TEST(test_cbisbi)
{
uint16_t code[] = {
0x9800 | 0xa8 /*A=0x15*/ | 0x3 /*bit 3*/, /* cbi $0x15, 3 */
0x9a00 | 0xa8 /*A=0x15*/ | 0x3 /*bit 3*/, /* cbi $0x15, 3 */
};
install_words(code, PC_START, sizeof(code));
memory[IO_BASE + 0x15] = 0xff;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[IO_BASE + 0x15], 0xff & ~(1 << 3));
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[IO_BASE + 0x15], 0xff);
}
END_TEST
START_TEST(test_com)
{
uint16_t code[] = {
0x9400 | 0x1f0 /*d=31*/, /* com r31 */
0x9400 | 0x1f0 /*d=31*/, /* com r31 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[SREG] = sreg_start = SREG_I | SREG_T | SREG_H | SREG_V;
memory[31] = 0x55;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[31], 0xaa);
ck_assert_uint_eq(memory[SREG],
(sreg_start | SREG_C | SREG_N | SREG_S) & ~SREG_V);
memory[31] = 0xff;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[31], 0);
ck_assert_uint_eq(memory[SREG],
(sreg_start | SREG_C | SREG_Z) & ~SREG_V);
}
END_TEST
START_TEST(test_cpc)
{
uint16_t code[] = {
0x1400 | 0x01, /* cp r0, r1 */
0x0400 | 0x23, /* cpc r2, r3 */
0x1400 | 0x45, /* cp r4, r5 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[0] = 0xf1;
memory[1] = 0x0f;
memory[SREG] = sreg_start = SREG_I | SREG_T;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[0], 0xf1);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_H | SREG_N | SREG_S);
memory[2] = 0x80;
memory[3] = 0x7f;
memory[SREG] |= SREG_C;
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[2], 0x80);
/* CP, CPC does not set Z. */
ck_assert_uint_eq(memory[SREG],
sreg_start | SREG_V | SREG_S | SREG_H);
memory[4] = 0x0;
memory[5] = 0xff;
memory[SREG] |= SREG_Z;
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
ck_assert_uint_eq(memory[4], 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_H | SREG_C);
}
END_TEST
START_TEST(test_cpi)
{
uint16_t code[] = {
0x3000 | 0x70f | 0x10, /* cpi r17, $7f */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[17] = 0x80;
memory[SREG] = sreg_start = SREG_I | SREG_T;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[17], 0x80);
ck_assert_uint_eq(memory[SREG],
sreg_start | SREG_V | SREG_S | SREG_H);
}
END_TEST
START_TEST(test_cpse)
{
uint16_t code[] = {
0x1000 | 0x01, /* cpse r0, r1 */
0x1000 | 0x02, /* cpse r0, r2 */
0x940e | /*kkkkk_k*/ 0x1f1, /* call 0x3fbeef */
0xbeef,
0x1000 | 0x02, /* cpse r0, r2 */
0, /* nop */
0, /* nop */
};
install_words(code, PC_START, sizeof(code));
memory[1] = 1;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[0], 0);
ck_assert_uint_eq(insns, 1);
emulate1();
/* Skips both words of 32-bit CALL imm16 */
ck_assert_uint_eq(pc, PC_START + 4);
ck_assert_uint_eq(memory[0], 0);
ck_assert_uint_eq(insns, 2);
emulate1();
/* Skips only one word of NOP */
ck_assert_uint_eq(pc, PC_START + 6);
ck_assert_uint_eq(insns, 3);
emulate1();
ck_assert_uint_eq(pc, PC_START + 7);
ck_assert_uint_eq(insns, 4);
}
END_TEST
START_TEST(test_dec)
{
uint16_t code[] = {
0x940a | 0x00, /* dec r0 */
0x940a | 0x00, /* dec r0 */
0x940a | 0x00, /* dec r0 */
};
uint8_t sreg_start;
install_words(code, PC_START, sizeof(code));
memory[SREG] = sreg_start = SREG_I | SREG_T | SREG_H | SREG_C;
memory[0] = 0x81;
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[0], 0x80);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_N | SREG_S);
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[0], 0x7f);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_V | SREG_S);
memory[0] = 0x1;
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
ck_assert_uint_eq(memory[0], 0);
ck_assert_uint_eq(memory[SREG], sreg_start | SREG_Z);
}
END_TEST
START_TEST(test_eicall22)
{
uint16_t code[] = {
0x9509, /* icall */
0x9519, /* eicall */
};
install_words(code, PC_START, sizeof(code));
setsp(0xffff);
memory[EIND] = 0x3f;
memwriteword(REGP_Z, PC_START + 1);
emulate1();
ck_assert_uint_eq(getsp(), 0xfffc);
ck_assert_uint_eq(memory[0xffff], (PC_START + 1) & 0xff);
ck_assert_uint_eq(memory[0xfffe], ((PC_START + 1) >> 8) & 0xff);
ck_assert_uint_eq(memory[0xfffd], (PC_START + 1) >> 16);
ck_assert_uint_eq(pc, PC_START + 1);
memory[EIND] = 0x5;
memwriteword(REGP_Z, 0);
emulate1();
ck_assert_uint_eq(getsp(), 0xfff9);
ck_assert_uint_eq(memory[0xfffc], (PC_START + 2) & 0xff);
ck_assert_uint_eq(memory[0xfffb], ((PC_START + 2) >> 8) & 0xff);
ck_assert_uint_eq(memory[0xfffa], (PC_START + 2) >> 16);
ck_assert_uint_eq(pc, 0x50000);
}
END_TEST
START_TEST(test_icall)
{
uint16_t code[] = {
0x9509, /* icall */
};
install_words(code, PC_START, sizeof(code));
setsp(0xffff);
memwriteword(REGP_Z, 0xffee);
emulate1();
ck_assert_uint_eq(getsp(), 0xfffd);
ck_assert_uint_eq(memory[0xffff], (PC_START + 1) & 0xff);
ck_assert_uint_eq(memory[0xfffe], (PC_START + 1) >> 8);
ck_assert_uint_eq(pc, 0xffee);
}
END_TEST
START_TEST(test_eijump22)
{
uint16_t code[] = {
0x9409, /* ijump */
0x9419, /* eijump */
};
install_words(code, PC_START, sizeof(code));
setsp(0xffff);
memory[EIND] = 0x3f;
memwriteword(REGP_Z, PC_START + 1);
emulate1();
ck_assert_uint_eq(getsp(), 0xffff);
ck_assert_uint_eq(pc, PC_START + 1);
memory[EIND] = 0x5;
memwriteword(REGP_Z, 0x1234);
emulate1();
ck_assert_uint_eq(getsp(), 0xffff);
ck_assert_uint_eq(pc, 0x51234);
}
END_TEST
START_TEST(test_ijump)
{
uint16_t code[] = {
0x9409, /* ijump */
};
install_words(code, PC_START, sizeof(code));
setsp(0xffff);
memwriteword(REGP_Z, 0xffee);
emulate1();
ck_assert_uint_eq(getsp(), 0xffff);
ck_assert_uint_eq(pc, 0xffee);
}
END_TEST
START_TEST(test_elpm)
{
uint16_t code[] = {
0x95c8, /* lpm */
0x95d8, /* elpm */
/* Z is r31:r30, so don't trash it: */
0x9004 | 0x1d0, /* lpm r29, Z */
0x9006 | 0x1d0, /* elpm r29, Z */
0x9005 | 0x1d0, /* lpm r29, Z+ */
0x9007 | 0x1d0, /* elpm r29, Z+ */
};
install_words(code, PC_START, sizeof(code));
memwriteword(REGP_Z, 0);
emulate1();
ck_assert_uint_eq(pc, PC_START + 1);
ck_assert_uint_eq(memory[0], 0xc8);
ck_assert_uint_eq(memword(REGP_Z), 0);
memory[RAMPZ] = 1;
install_words(&code[1], 0x10000 / 2, sizeof(code[1]));
emulate1();
ck_assert_uint_eq(pc, PC_START + 2);
ck_assert_uint_eq(memory[0], 0xd8);
memwriteword(REGP_Z, 4);
emulate1();
ck_assert_uint_eq(pc, PC_START + 3);
ck_assert_uint_eq(memory[29], 0xd4);
ck_assert_uint_eq(memword(REGP_Z), 4);
memory[RAMPZ] = 0;
emulate1();
ck_assert_uint_eq(pc, PC_START + 4);
ck_assert_uint_eq(memory[29], 0xd4);
memory[RAMPZ] = 0x3f;
emulate1();
ck_assert_uint_eq(pc, PC_START + 5);
ck_assert_uint_eq(memory[29], 0xd4);
ck_assert_uint_eq(memword(REGP_Z), 0x5);