void test_mcu_callf(void)
{
uint32_t address = 0x556677;
uint8_t length = 4;
SET_PC(0x12BBCC);
mcu_callf( address, length); //12BBCC + 4 = 12BBDO
TEST_ASSERT_EQUAL_INT8(0xD0, MEM_READ_BYTE(inputSP) ); // test is pcl store in the address
TEST_ASSERT_EQUAL_INT8(0xBB, MEM_READ_BYTE(sp_minus1) ); // test is pch store in the address ( sp decrement)
TEST_ASSERT_EQUAL_INT8(0x12, MEM_READ_BYTE(sp_minus2) ); // test is pce store in the address ( sp decrement)
TEST_ASSERT_EQUAL_INT32( address , *pcToLoad );
TEST_ASSERT_EQUAL_INT8(inputSP -3, SP ); // test is sp decreament 3 time
}
void test_pushw_y(void)
{
YH = 0xAA;
YL = 0xBB;
SET_Y(0xAABB);
uint8_t instr[] = {0XAB};
uint8_t length = pushw_y(instr);
TEST_ASSERT_EQUAL_INT8(0xBB, MEM_READ_BYTE(inputSP) );
TEST_ASSERT_EQUAL_INT8(0xAA, MEM_READ_BYTE(inputSP_DEC) );
TEST_ASSERT_EQUAL_INT16( inputSP-2 , SP ); // test is SP decreament 2 time
TEST_ASSERT_EQUAL_INT8( 2, length );
}
//Assembly : (Y) | ld A,(Y)
void test_ld_a_to_y(void){
SET_Y(0X102B);
uint8_t instr[] = {0XFB};
TEST_ASSERT_EQUAL_INT8(2, ld_a_to_y(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(0X102B));
}
void mcu_cpl(uint16_t addr){
uint8_t result = 0xFF - MEM_READ_BYTE(addr);
MEM_WRITE_BYTE( addr, result);
UPDATE_Z_N_FLAG(result);
C = 1;
}
//Assembly : shortmem | ld A,$10
void test_ld_a_to_shortmem(void){
uint8_t shortMEM = 0xAD;
uint8_t instr[] = {0XBB, shortMEM};
TEST_ASSERT_EQUAL_INT8(2, ld_a_to_shortmem(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(shortMEM));
}
//Assembly : longmem | ld A,$1000
void test_ld_a_to_longmem(void){
uint16_t longmem = 0x1101;
uint8_t instr[] = {0XBB, 0x11, 0x01};
TEST_ASSERT_EQUAL_INT8(3, ld_a_to_longmem(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(longmem));
}
void mcu_neg(uint16_t addr){
uint8_t result = 0 - MEM_READ_BYTE(addr);
MEM_WRITE_BYTE( addr, result);
UPDATE_Z_N_FLAG(result);
C = ~Z;
V = (result == 0x80 ? 1 : 0);
}
//Assembly : (shortoff,X) | ld A,($10,X)
void test_ld_a_to_shortoff_x(void){
SET_X(0X2B11);
uint8_t instr[] = {0XFB, 0X11};
//0x2B11 + 0X11 = 0X2B22
TEST_ASSERT_EQUAL_INT8(2, ld_a_to_shortoff_x(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(0X2B22));
}
/* 0000
| 0100
--------
0100
--------
*/
void test_bset_longmem_pos_2(void){
uint16_t longmem = 0x1101;
MEM_WRITE_BYTE(longmem, 0);
uint8_t instr[] = {0XBB, 0x11, 0x01};
TEST_ASSERT_EQUAL_INT8(4, bset_longmem_pos_2(instr));
TEST_ASSERT_EQUAL_INT8(0x4, MEM_READ_BYTE(longmem) );
}
/* 0100
| 0001
--------
0101
--------
*/
void test_bset_longmem_pos_0_given_value_is_4(void){
uint16_t longmem = 0x1101;
MEM_WRITE_BYTE(longmem, 0x4);
uint8_t instr[] = {0XBB, 0x11, 0x01};
TEST_ASSERT_EQUAL_INT8(4, bset_longmem_pos_0(instr));
TEST_ASSERT_EQUAL_INT8(0x5, MEM_READ_BYTE(longmem) );
}
//Assembly : (longoff,Y) | ld A,($1000,Y)
void test_ld_a_to_longoff_y(void){
SET_Y(0X2B11);
uint8_t instr[] = {0XFB, 0X11, 0x11};
//0x2B11 + 0X1111 = 0X3c22
TEST_ASSERT_EQUAL_INT8(4, ld_a_to_longoff_y(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(0X3c22));
}
//Assembly : [shortptr.w] | ld A,[$10.w]
// Please refer this instruction in page 46 of stm8 programming manual
void test_ld_a_to_shortptr_w(void){
uint8_t instr[] = {0XFB, 0X13};
MEM_WRITE_BYTE(0X13 , 0xAA);
MEM_WRITE_BYTE(0X14 , 0xBB);
TEST_ASSERT_EQUAL_INT8(3, ld_a_to_shortptr_w(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(0xAABB));
}
//Assembly : [longptr.w] | ld A,[$1000.w]
// Please refer this instruction in page 47 of stm8 programming manual
void test_ld_a_to_longptr_w(void){
uint8_t instr[] = {0XFB, 0X13, 0X15};
MEM_WRITE_BYTE(0X1315 , 0xAA);
MEM_WRITE_BYTE(0X1316 , 0xBB);
TEST_ASSERT_EQUAL_INT8(4, ld_a_to_longptr_w(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(0xAABB));
}
void mcu_dec(uint16_t addr){
uint8_t a = MEM_READ_BYTE(addr);
uint8_t value = 1 ;
uint8_t result = a - value;
MEM_WRITE_BYTE( addr, result);
UPDATE_Z_N_FLAG(result);
V = (A7 & M7 | M7 & _R7 | _R7 & A7) ^ ( A6 & M6 | M6 & _R6 | _R6 & A6 );
}
//Assembly : ([shortptr.w],Y) ld A,([$10.w],Y)
// Please refer this instruction in page 50 of stm8 programming manual
void test_ld_a_to_shortptr_w_y(void){
SET_Y(0X0011);
uint8_t instr[] = {0XFB, 0X13};
MEM_WRITE_BYTE(0X13 , 0x11);
MEM_WRITE_BYTE(0X14 , 0x11);
// 0X1111 + 0X11 = 0X1122
TEST_ASSERT_EQUAL_INT8(3, ld_a_to_shortptr_w_y(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(0X1122));
}
// Assembly : ([longptr.w],X) | ld A,([$1000.w],X)
// Please refer this instruction in page 50 of stm8 programming manual
void test_ld_a_to_longptr_w_x(void){
SET_X(0X0011);
uint8_t instr[] = {0XFB, 0X13, 0X00};
MEM_WRITE_BYTE(0X1300 , 0xAA);
MEM_WRITE_BYTE(0X1301 , 0xBB);
// 0XAABB + 0X11 = 0XAACC
TEST_ASSERT_EQUAL_INT8(4, ld_a_to_longptr_w_x(instr));
TEST_ASSERT_EQUAL_INT8(0xAE, MEM_READ_BYTE(0XAACC));
}
/** overflow occur when sum of 2 positive number and get negative number,
*/
void test_mcu_inc_set_V_flag(void){
MEM_WRITE_BYTE(0x1133,0x7F);
mcu_inc(0x1133);
TEST_ASSERT_EQUAL_INT8(0x80, MEM_READ_BYTE(0x1133));
TEST_ASSERT_EQUAL(1, V); // 0x7F(+value) + 0x1(+value) = 0x80(-value)
TEST_ASSERT_EQUAL(0, I1);
TEST_ASSERT_EQUAL(0, H);
TEST_ASSERT_EQUAL(0, I0);
TEST_ASSERT_EQUAL(1, N); // bit 7 is 1
TEST_ASSERT_EQUAL(0, Z);
TEST_ASSERT_EQUAL(0, C);
}
void test_mcu_inc_set_Z_flag(void){
MEM_WRITE_BYTE(0x1133,-1);
mcu_inc(0x1133);
TEST_ASSERT_EQUAL_INT8(0, MEM_READ_BYTE(0x1133));
TEST_ASSERT_EQUAL(0, V);
TEST_ASSERT_EQUAL(0, I1);
TEST_ASSERT_EQUAL(0, H);
TEST_ASSERT_EQUAL(0, I0);
TEST_ASSERT_EQUAL(0, N);
TEST_ASSERT_EQUAL(1, Z);
TEST_ASSERT_EQUAL(0, C);
}
void test_mcu_inc_set_incative_flag_carry_flag(void){
MEM_WRITE_BYTE(0x1133 ,0x81);
mcu_inc(0x1133);
TEST_ASSERT_EQUAL_INT8(0x82, MEM_READ_BYTE(0x1133));
TEST_ASSERT_EQUAL(0, V);
TEST_ASSERT_EQUAL(0, I1);
TEST_ASSERT_EQUAL(0, H);
TEST_ASSERT_EQUAL(0, I0);
TEST_ASSERT_EQUAL(1, N); // bit 7 is 1
TEST_ASSERT_EQUAL(0, Z);
TEST_ASSERT_EQUAL(0, C);
}
/* generic memory access function, it's safe because alignments and permissions
are checked, handles any natural transfer sizes; note, faults out if nbytes
is not a power-of-two or larger then MD_PAGE_SIZE */
enum md_fault_type
mem_access(struct mem_t *mem, /* memory space to access */
enum mem_cmd cmd, /* Read (from sim mem) or Write */
md_addr_t addr, /* target address to access */
void *vp, /* host memory address to access */
int nbytes) /* number of bytes to access */
{
byte_t *p = vp;
/* check alignments */
if (/* check size */(nbytes & (nbytes-1)) != 0
|| /* check max size */nbytes > MD_PAGE_SIZE)
return md_fault_access;
if (/* check natural alignment */(addr & (nbytes-1)) != 0)
return md_fault_alignment;
/* perform the copy */
switch (nbytes)
{
case 1:
if (cmd == Read)
*((byte_t *)p) = MEM_READ_BYTE(mem, addr);
else
MEM_WRITE_BYTE(mem, addr, *((byte_t *)p));
break;
case 2:
if (cmd == Read)
*((half_t *)p) = MEM_READ_HALF(mem, addr);
else
MEM_WRITE_HALF(mem, addr, *((half_t *)p));
break;
case 4:
if (cmd == Read)
*((word_t *)p) = MEM_READ_WORD(mem, addr);
else
MEM_WRITE_WORD(mem, addr, *((word_t *)p));
break;
#ifdef HOST_HAS_QUAD
case 8:
if (cmd == Read)
*((quad_t *)p) = MEM_READ_QUAD(mem, addr);
else
MEM_WRITE_QUAD(mem, addr, *((quad_t *)p));
break;
#endif /* HOST_HAS_QUAD */
default:
{
/* nbytes >= 8/16 and power of two */
unsigned words = nbytes >> 2;
if (cmd == Read)
{
while (words-- > 0)
{
*((word_t *)p) = MEM_READ_WORD(mem, addr);
p += sizeof(word_t);
addr += sizeof(word_t);
}
}
else
{
while (words-- > 0)
{
MEM_WRITE_WORD(mem, addr, *((word_t *)p));
p += sizeof(word_t);
addr += sizeof(word_t);
}
}
}
break;
}
/* no fault... */
return md_fault_none;
}
uint8_t mcu_pop(void){
sp_increment();
uint8_t value = MEM_READ_BYTE(SP);
return value;
}