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testcases.cpp
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testcases.cpp
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#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#define __STDC_LIMIT_MACROS // for INT32_MIN
#include <stdint.h>
#include "error.h"
#include "log.h"
#include "debug_console_testcases.h"
#include "processor.h"
#include "processor_utils.h"
#include "exceptions.h"
#define TEST_VAL_1 0x12345678abcdefff
#define TEST_VAL_2 0x87654321beefdead
bool single_step = false; // not applicable
debug_console *dc = new debug_console_testcases();
const char *logfile = "testcases.log";
void error_exit(const char *format, ...)
{
char buffer[4096] = { 0 };
va_list ap;
va_start(ap, format);
(void)vsnprintf(buffer, sizeof buffer, format, ap);
va_end(ap);
fprintf(stderr, "%s\n", buffer);
dc -> dc_log("%s", buffer);
exit(1);
}
void tick(processor *p)
{
dc -> tick(p);
p -> tick();
}
void exec(memory_bus *mb, std::vector<int> instructions, processor *p)
{
for(unsigned int index=0; index<instructions.size(); index++)
{
unsigned int offset = index * 4;
try
{
mb -> write_32b(offset, instructions.at(index));
}
catch(processor_exception & pe)
{
error_exit("failed to write to memory EXCEPTION %d at/for %016llx, PC: %016llx (1), sr: %08x", pe.get_cause(), pe.get_BadVAddr(), pe.get_EPC(), pe.get_status());
}
}
tick(p);
}
void create_system(memory_bus **mb, memory **m1, memory **m2, memory **m3 = NULL, processor **p = NULL, int *m1s = NULL, int *m2s = NULL, int *m3s = NULL, uint64_t *po1 = NULL, uint64_t *po2 = NULL, uint64_t *po3 = NULL)
{
*mb = new memory_bus(dc);
int mem_size1 = 0x100000; // FIXME verify power2
*m1 = new memory(mem_size1, true);
uint64_t o1 = 0;
(*mb) -> register_memory(o1, mem_size1 - 1, *m1);
int mem_size2 = 0x200; // verify power2
*m2 = new memory(mem_size2, true);
uint64_t o2 = 0xf00000;
(*mb) -> register_memory(o2, mem_size2 - 1, *m2);
int mem_size3 = 128 * 1024;
uint64_t o3 = 0xffffffffbfc00000;
if (m3)
{
*m3 = new memory(mem_size3, true);
(*mb) -> register_memory(o3, mem_size3 - 1, *m3);
}
*p = new processor(dc, *mb);
if (m1s)
*m1s = mem_size1;
if (m2s)
*m2s = mem_size2;
if (m3s)
*m3s = mem_size3;
if (po1)
*po1 = o1;
if (po2)
*po2 = o2;
if (po3)
*po3 = o3;
}
void free_system(memory_bus *mb, memory *m1, memory *m2, memory *m3, processor *p)
{
delete p;
delete mb;
delete m3;
delete m2;
delete m1;
}
void test_make_instruction()
{
dolog(" + test_make_instruction");
uint8_t rs = 13;
uint8_t rt = 4;
uint8_t function = 0x31;
int immediate = 0xabcd;
uint32_t expected = function << 26 |
rs << 21 |
rt << 16 |
immediate;
uint32_t rc = make_cmd_I_TYPE(rs, rt, function, immediate);
if (rc != expected)
error_exit("i-type failed: expected %x, got %x", expected, rc);
int address = 0x3FFFFFE;
function = 0x2;
expected = function << 26 | address;
rc = make_cmd_J_TYPE(function, address);
if (rc != expected)
error_exit("j-type failed: expected %x, got %x", expected, rc);
uint8_t rd = 31;
uint8_t sa = 17;
uint8_t extra = rs;
expected = extra << 21 |
rt << 16 |
rd << 11 |
sa << 6 |
function;
rc = make_cmd_SPECIAL(rt, rd, sa, function, extra); // R-type
if (rc != expected)
error_exit("r-type failed: expected %x, got %x", expected, rc);
}
void test_count_leading()
{
dolog(" + test_count_leading");
// one
int value = 15, expected = 0;
int rc = count_leading_ones(32, value);
if (rc != expected)
error_exit("count_leading_ones failed (1), expecting %d, got %d", expected, rc);
expected = 4;
rc = count_leading_ones(4, value);
if (rc != expected)
error_exit("count_leading_ones failed (2), expecting %d, got %d", expected, rc);
expected = 0;
rc = count_leading_ones(5, value);
if (rc != expected)
error_exit("count_leading_ones failed (3), expecting %d, got %d", expected, rc);
// zero
value = 15, expected = 28;
rc = count_leading_zeros(32, value);
if (rc != expected)
error_exit("count_leading_zeros failed (1), expecting %d, got %d", expected, rc);
expected = 0;
rc = count_leading_zeros(4, value);
if (rc != expected)
error_exit("count_leading_zeros failed (2), expecting %d, got %d", expected, rc);
expected = 0;
rc = count_leading_zeros(3, value);
if (rc != expected)
error_exit("count_leading_zeros failed (3), expecting %d, got %d", expected, rc);
}
void test_rotate_right()
{
dolog(" + test_rotate_right");
int value = 2;
uint8_t n = 2;
uint8_t width = 3;
int expected = 4;
int rc = rotate_right(value, n, width);
if (rc != expected)
error_exit("rotate_right: width %d, expected %x, got %x", width, expected, rc);
value = 0xdeadbeef;
n = 4;
width = 32;
expected = 0xfdeadbee;
rc = rotate_right(value, n, width);
if (rc != expected)
error_exit("rotate_right: width %d, expected %x, got %x", width, expected, rc);
}
void test_processor()
{
dolog(" + test_processor");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
// 32bit
{
int cmp_val = 0xdeadbeef;
p -> reset();
uint64_t reset_vector = 0xffffffffbfc00000;
if (p -> get_PC() != reset_vector)
error_exit("failed: pc != %016llx after reset", reset_vector);
p -> set_PC(0);
tick(p);
if (p -> get_PC() != 4)
error_exit("failed: pc != 4 after 1 tick");
for(int reg=1; reg<32; reg++)
p -> set_register_32b(reg, cmp_val);
p -> reset();
p -> set_PC(0);
for(int reg=0; reg<32; reg++)
{
if (p -> get_register_32b_signed(reg))
error_exit("register %d has a value after a reset", reg);
}
for(int reg=1; reg<32; reg++)
p -> set_register_32b(reg, cmp_val);
for(int reg=1; reg<32; reg++)
{
int32_t val = p -> get_register_32b_signed(reg);
if (val != cmp_val)
error_exit("register %d has invalid value %x", val);
}
dolog("ignore the \"register 0 changed\" message");
p -> set_register_32b(0, cmp_val);
if (p -> get_register_32b_signed(0))
error_exit("register 0 changed value!");
}
// 64bit
{
uint64_t cmp_val = 0xdeadbeef12345678;
p -> reset();
p -> set_PC(0);
for(int reg=1; reg<32; reg++)
p -> set_register_64b(reg, cmp_val);
p -> reset();
for(int reg=0; reg<32; reg++)
{
if (p -> get_register_64b_unsigned(reg))
error_exit("register %d has a value after a reset", reg);
}
for(int reg=1; reg<32; reg++)
p -> set_register_64b(reg, cmp_val);
for(int reg=1; reg<32; reg++)
{
uint64_t val = p -> get_register_64b_unsigned(reg);
if (val != cmp_val)
error_exit("register %d has invalid value %x", val);
}
dolog("ignore the \"register 0 changed\" message");
p -> set_register_64b(0, cmp_val);
if (p -> get_register_64b_unsigned(0))
error_exit("register 0 changed value!");
}
free_system(mb, m1, m2, m3, p);
}
void test_memory()
{
dolog(" + test_memory");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
int size = -1;
create_system(&mb, &m1, &m2, &m3, &p, &size);
uint64_t address = 8;
uint8_t value_8b = 0x0f;
m1 -> write_8b(address, value_8b);
uint8_t temp_8b = -1;
m1 -> read_8b(address, &temp_8b);
if (temp_8b != value_8b)
error_exit("failed to verify data (8b)");
address = 16;
uint16_t value_16b = 0x1234;
m1 -> write_16b(address, value_16b);
uint16_t temp_16b = -1;
m1 -> read_16b(address, &temp_16b);
if (temp_16b != value_16b)
error_exit("failed to verify data (16b)");
address = 24;
uint32_t value_32b = 0x12345678;
m1 -> write_32b(address, value_32b);
uint32_t temp_32b = -1;
m1 -> read_32b(address, &temp_32b);
if (temp_32b != value_32b)
error_exit("failed to verify data (32b)");
address = 32;
uint64_t value_64b = 0x1234567890abcdef;
m1 -> write_64b(address, value_64b);
uint64_t temp_64b = -1;
m1 -> read_64b(address, &temp_64b);
if (temp_64b != value_64b)
error_exit("failed to verify data (64b)");
free_system(mb, m1, m2, m3, p);
}
void test_memory_bus()
{
dolog(" + test_memory_bus");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
uint64_t o1 = -1, o2 = -1, o3 = -1;
int dummy = -2;
create_system(&mb, &m1, &m2, &m3, &p, &dummy, &dummy, &dummy, &o1, &o2, &o3);
try
{
uint32_t value = 0x11223344;
mb -> write_32b(o1, value);
uint32_t temp_32b = -1;
mb -> read_32b(o1, &temp_32b);
if (temp_32b != value)
error_exit("failed: write verify error");
mb -> read_32b(o2, &temp_32b);
if (temp_32b == value)
error_exit("failed: segment selection failure");
}
catch(processor_exception pe)
{
error_exit("failed to access memory EXCEPTION %d at/for %016llx, PC: %016llx (1), sr: %08x", pe.get_cause(), pe.get_BadVAddr(), pe.get_EPC(), pe.get_status());
}
free_system(mb, m1, m2, m3, p);
}
void test_twos_complement()
{
dolog(" + test_twos_complement");
uint8_t bits = 8;
int value = -1, expected = 255;
int rc = twos_complement(value, bits);
if (rc != expected)
error_exit("failed: twos_complement for -1/8, expected %d got %d", expected, rc);
value = -1;
bits = 5;
expected = 31;
rc = twos_complement(value, bits);
if (rc != expected)
error_exit("failed: twos_complement for -1/5, expected %d got %d", expected, rc);
value = 1;
bits = 16;
expected = 1;
rc = twos_complement(value, bits);
if (rc != expected)
error_exit("failed: twos_complement for -1/16, expected %d got %d", expected, rc);
}
void test_untows_complement()
{
dolog(" + test_untwos_complement");
/* int untwos_complement(int value, int bits) */
int value = 0x80;
uint8_t bits = 8;
int rc = untwos_complement(value, bits);
if (rc != -128)
error_exit("untwos_complement failed 8b (a): %d expected -128", rc);
value = 0x8000, bits = 16;
rc = untwos_complement(value, bits);
if (rc != -32768)
error_exit("untwos_complement failed 16b (a) %d expected -32768", rc);
value = 0x8000;
rc = int16_t(value);
if (rc != -32768)
error_exit("untwos_complement_16b failed (a) %d expected -32768", rc);
value = 0xffff, bits = 16;
rc = untwos_complement(value, bits);
if (rc != -1)
error_exit("untwos_complement failed 16b (a) %d expected -1", rc);
value = 0xffff;
rc = int16_t(value);
if (rc != -1)
error_exit("untwos_complement_16b failed (a) %d expected -32768", rc);
value = 0x80000000, bits = 32;
rc = untwos_complement(value, bits);
if (rc != INT32_MIN)
error_exit("untwos_complement failed 32b (a) %d expected -2147483648", rc);
value = 0x40;
bits = 8;
rc = untwos_complement(value, bits);
if (rc != 64)
error_exit("untwos_complement failed 8b (b) %d expected 64", rc);
value = 0x4000, bits = 16;
rc = untwos_complement(value, bits);
if (rc != 16384)
error_exit("untwos_complement failed 16b (b) %d expected 16384", rc);
value = 0x4000;
rc = int16_t(value);
if (rc != 16384)
error_exit("untwos_complement_16b failed (b) %d expected 16384", rc);
value = 0x40000000, bits = 32;
rc = untwos_complement(value, bits);
if (rc != 1073741824)
error_exit("untwos_complement failed 32b (b) %d expected 1073741824", rc);
}
void test_sign_extend()
{
dolog(" + test_sign_extend");
uint64_t rc = sign_extend_8b(0x80), cmp = 0xffffffffffffff80ll;
if (rc != cmp)
error_exit("sign_extend_8b mismatch (%x / %x)", cmp, rc);
rc = sign_extend_16b(0x8000);
cmp = 0xffffffffffff8000ll;
if (rc != cmp)
error_exit("sign_extend_16b mismatch (%x / %x)", cmp, rc);
rc = sign_extend(8, 4), cmp = 0xfffffffffffffff8ll;
if (rc != cmp)
error_exit("sign_extend mismatch (%x / %x)", cmp, rc);
}
void test_LW()
{
dolog(" + test_LW");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
// unsigned offset
{
p -> reset();
p -> set_PC(0);
uint8_t base = 1;
uint64_t base_val = 0x1234;
p -> set_register_64b(base, base_val);
uint8_t rt = 2;
uint64_t rt_val = TEST_VAL_2;
p -> set_register_64b(rt, rt_val);
int16_t offset = 0xf8;
uint8_t function = 0x23; // LW
uint32_t instr = make_cmd_I_TYPE(base, rt, function, offset);
m1 -> write_32b(0, instr);
// printf("instruction: %08x\n", instr);
uint32_t addr_val = 0xdeafbeef;
uint64_t addr = base_val + offset;
m1 -> write_32b(addr, addr_val);
tick(p);
uint32_t temp_32b = p -> get_register_32b_unsigned(rt);
uint32_t expected = addr_val;
if (temp_32b != expected)
error_exit("LW: rt (%08x) != %08x", temp_32b, expected);
}
// signed offset
{
p -> reset();
p -> set_PC(0);
uint8_t base = 1;
uint64_t base_val = 0xf0000;
p -> set_register_32b(base, base_val);
uint8_t rt = 2;
uint64_t rt_val = TEST_VAL_1;
p -> set_register_64b(rt, rt_val);
uint16_t offset = 0x9014;
uint8_t function = 0x23; // LW
uint32_t temp_32b = -1;
uint32_t instr = make_cmd_I_TYPE(base, rt, function, offset);
m1 -> write_32b(0, instr);
// printf("instruction: %08x\n", instr);
uint32_t addr_val = 0xdeafbeef;
uint64_t addr = base_val + untwos_complement(offset, 16);
m1 -> write_32b(addr, addr_val);
tick(p);
temp_32b = p -> get_register_32b_signed(rt);
uint32_t expected = addr_val;
if (temp_32b != expected)
error_exit("LW: rt (%016llx) != %016llx", temp_32b, expected);
}
free_system(mb, m1, m2, m3, p);
}
void test_SLL()
{
dolog(" + test_SLL");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
uint64_t rd_val = 1313121210101414;
uint8_t rd = 1;
p -> set_register_64b(rd, rd_val);
uint64_t rt_val = 0xf123e456d789cdef;
uint8_t rt = 2;
p -> set_register_64b(rt, rt_val);
uint8_t sa = 3;
uint8_t function = 0, extra = 0;
uint32_t instr = make_cmd_SPECIAL(rt, rd, sa, function, extra);
m1 -> write_32b(0, instr);
tick(p);
uint64_t input_val_check = p -> get_register_64b_unsigned(rt);
if (input_val_check != rt_val)
error_exit("SLL: rt changed from %016llx to %016llx", rt_val, input_val_check);
uint64_t temp_64b = p -> get_register_64b_signed(rd);
uint64_t expected = sign_extend_32b(rt_val << sa);
if (temp_64b != expected)
error_exit("SLL: rd (%016llx) != %016llx", temp_64b, expected);
free_system(mb, m1, m2, m3, p);
}
void test_SRL()
{
dolog(" + test_SRL");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
uint8_t rd = 1;
p -> set_register_32b(rd, 13);
int input_val = 191;
uint8_t rt = 2;
p -> set_register_32b(rt, input_val);
uint8_t sa = 3;
int function = 2, extra = 0;
uint32_t instr = make_cmd_SPECIAL(rt, rd, sa, function, extra);
// printf("instruction: %08x\n", instr);
m1 -> write_32b(0, instr);
tick(p);
int input_val_check = p -> get_register_32b_signed(2);
if (input_val_check != input_val)
error_exit("SRL: rt changed from %d to %d", input_val, input_val_check);
int temp_32b = p -> get_register_32b_signed(1);
int expected = input_val >> sa;
if (temp_32b != expected)
error_exit("SRL: rd (%d) != %d", temp_32b, expected);
free_system(mb, m1, m2, m3, p);
}
void test_LUI()
{
dolog(" + test_LUI");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
uint8_t rs = 1;
uint64_t rs_val = TEST_VAL_1;
p -> set_register_64b(rs, rs_val);
uint8_t rt = 4;
uint64_t rt_val = TEST_VAL_2;
p -> set_register_64b(rt, rt_val);
uint8_t function = 0x0f;
int immediate = 0xabcd;
uint64_t expected = sign_extend_32b(immediate << 16);
uint32_t instr = make_cmd_I_TYPE(rs, rt, function, immediate);
m1 -> write_32b(0, instr);
tick(p);
uint64_t rc = p -> get_register_64b_unsigned(rt);
if (rc != expected)
error_exit("LUI failed: expected %x got %x", expected, rc);
rc = p -> get_register_64b_unsigned(rs);
if (rc != rs_val)
error_exit("LUI failed: register %d changed from %016llx to %016llx", rs, rs_val, rc);
free_system(mb, m1, m2, m3, p);
}
void test_SW()
{
dolog(" + test_SW");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
uint32_t verify_val = 0x1234beef;
uint8_t rt = 1;
p -> set_register_32b(rt, verify_val);
int address_base = 0x1000;
uint8_t base = 9, rs = base;
p -> set_register_32b(base, address_base);
int offset = 0x100, immediate = offset;
int final_address = address_base + offset;
uint8_t function = 0x2b;
uint32_t instruction = make_cmd_I_TYPE(rs, rt, function, immediate);
m1 -> write_32b(0, instruction);
tick(p);
uint32_t result_mem_val = -1;
m1 -> read_32b(final_address, &result_mem_val);
if (result_mem_val != verify_val)
error_exit("SW: expected %08x, got %08x", verify_val, result_mem_val);
// FIXME test that unaligned memory access causes a AddressError exception
free_system(mb, m1, m2, m3, p);
}
void test_SB()
{
dolog(" + test_SB");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
uint8_t verify_val = 0xb3;
uint8_t rt = 1;
p -> set_register_32b(rt, verify_val);
int address_base = 0x1000;
uint8_t base = 9, rs = base;
p -> set_register_32b(base, address_base);
int offset = 0x100, immediate = offset;
int final_address = address_base + offset;
uint8_t function = 0x28;
uint32_t instruction = make_cmd_I_TYPE(rs, rt, function, immediate);
m1 -> write_32b(0, instruction);
tick(p);
uint8_t result_mem_val = -1;
m1 -> read_8b(final_address, &result_mem_val);
if (result_mem_val != verify_val)
error_exit("SW: expected %08x, got %08x", verify_val, result_mem_val);
// FIXME VERIFY that other registers / memory is not affected
free_system(mb, m1, m2, m3, p);
}
void test_ORI()
{
dolog(" + test_ORI");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
int old_val = 0x1234beef;
uint8_t rt = 1;
p -> set_register_32b(rt, old_val);
int immediate = 0x1234;
int or_value = 0x4321;
uint8_t rs = 9;
p -> set_register_32b(rs, or_value);
int expected = p -> get_register_32b_signed(rs) | immediate;
uint8_t function = 0x0d;
uint32_t instruction = make_cmd_I_TYPE(rs, rt, function, immediate);
m1 -> write_32b(0, instruction);
tick(p);
int result = p -> get_register_32b_signed(rt);
if (result != expected)
error_exit("ORI: result is %08x, expected %08x", result, expected);
free_system(mb, m1, m2, m3, p);
}
void test_ANDI()
{
dolog(" + test_ANDI");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
uint64_t old_val = 0x1234beefdead5678;
uint8_t rt = 1;
p -> set_register_64b(rt, old_val);
uint16_t immediate = 0x1234;
uint64_t and_value = 0x43210123abcddead;
uint8_t rs = 9;
p -> set_register_64b(rs, and_value);
int expected = and_value & immediate;
uint8_t function = 0x0c;
uint32_t instruction = make_cmd_I_TYPE(rs, rt, function, immediate);
m1 -> write_32b(0, instruction);
tick(p);
int result = p -> get_register_32b_signed(rt);
if (result != expected)
error_exit("ANDI: result is %08x, expected %08x", result, expected);
free_system(mb, m1, m2, m3, p);
}
void test_XORI()
{
dolog(" + test_XORI");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
uint64_t old_val = 0x1234beefdead5678;
uint8_t rt = 1;
p -> set_register_64b(rt, old_val);
uint16_t immediate = 0x1234;
uint64_t xor_value = 0x43210123abcddead;
uint8_t rs = 9;
p -> set_register_64b(rs, xor_value);
int expected = xor_value ^ immediate;
uint8_t function = 0x0e;
uint32_t instruction = make_cmd_I_TYPE(rs, rt, function, immediate);
m1 -> write_32b(0, instruction);
tick(p);
int result = p -> get_register_32b_signed(rt);
if (result != expected)
error_exit("ANDI: result is %08x, expected %08x", result, expected);
free_system(mb, m1, m2, m3, p);
}
void test_ADDIU()
{
dolog(" + test_ADDIU");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
uint64_t rt_val = 0x1234beefccccdddd;
uint8_t rt = 1;
p -> set_register_64b(rt, rt_val);
int immediate = 0x1234;
uint64_t rs_val = 0x4321abcdaaaabbbb;
uint8_t rs = 9;
p -> set_register_64b(rs, rs_val);
int32_t expected_s32 = rs_val + int16_t(immediate);
uint64_t expected = expected_s32; // sign extended
uint8_t function = 0x09;
uint32_t instruction = make_cmd_I_TYPE(rs, rt, function, immediate);
m1 -> write_32b(0, instruction);
tick(p);
uint64_t result = p -> get_register_64b_signed(rt);
if (result != expected)
error_exit("ADDIU: result is %08x, expected %08x", result, expected);
free_system(mb, m1, m2, m3, p);
}
void test_AND()
{
dolog(" + test_AND");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
int sa = 31;
uint64_t rt_val = 0x1234beef5678dead;
uint8_t rt = 1;
p -> set_register_64b(rt, rt_val);
uint64_t rs_val = 0xdeaf56781234beef;
uint8_t rs = 9;
p -> set_register_64b(rs, rs_val);
uint64_t rd_val = 0xaaaabbbbccccdddd;
uint8_t rd = 10;
p -> set_register_64b(rd, rd_val);
uint64_t expected = rs_val & rt_val;
uint8_t function = 0x24, extra = rs;
uint32_t instruction = make_cmd_SPECIAL(rt, rd, sa, function, extra);
m1 -> write_32b(0, instruction);
tick(p);
uint64_t result = p -> get_register_64b_signed(rd);
if (result != expected)
error_exit("AND: result is %016llx, expected %016llx", result, expected);
free_system(mb, m1, m2, m3, p);
}
void test_OR()
{
dolog(" + test_OR");
memory_bus *mb = NULL;
memory *m1 = NULL, *m2 = NULL, *m3 = NULL;
processor *p = NULL;
create_system(&mb, &m1, &m2, &m3, &p);
p -> reset();
p -> set_PC(0);
int sa = 31;
uint64_t rt_val = 0x1234beef5678dead;
uint8_t rt = 1;
p -> set_register_64b(rt, rt_val);
uint64_t rs_val = 0xdeaf5678beef1234;
uint8_t rs = 10;
p -> set_register_64b(rs, rs_val);
uint64_t rd_val = 0xaaaabbbbccccdddd;
uint8_t rd = 9;
p -> set_register_64b(rd, rd_val);
uint64_t expected = rs_val | rt_val;
uint8_t function = 0x25, extra = rs;
uint32_t instruction = make_cmd_SPECIAL(rt, rd, sa, function, extra);
m1 -> write_32b(0, instruction);
tick(p);
uint64_t result = p -> get_register_64b_unsigned(rd);
if (result != expected)
error_exit("OR: result is %016llx, expected %016llx", result, expected);
free_system(mb, m1, m2, m3, p);
}
typedef struct
{
uint64_t registers[32], PC, HI, LO, status_register;
uint32_t C0_registers[32];
}
all_registers_t;
all_registers_t * copy_registers(processor *p)