static void add_reg(unsigned reg, unsigned size) {
if (reg >= 8) {
add_char('r');
add_dec_uint32(reg);
switch (size) {
case 1: add_char('l'); break;
case 2: add_char('w'); break;
case 4: add_char('d'); break;
}
return;
}
if (x86_64 && size == 1 && reg >= 4 && reg <= 7) {
switch (reg) {
case 4: add_str("spl"); break;
case 5: add_str("bpl"); break;
case 6: add_str("sil"); break;
case 7: add_str("dil"); break;
}
return;
}
if (size == 1) {
switch (reg) {
case 0: add_str("al"); break;
case 1: add_str("cl"); break;
case 2: add_str("dl"); break;
case 3: add_str("bl"); break;
case 4: add_str("ah"); break;
case 5: add_str("ch"); break;
case 6: add_str("dh"); break;
case 7: add_str("bh"); break;
}
}
else {
switch (size) {
case 4: add_char('e'); break;
case 8: add_char('r'); break;
}
switch (reg) {
case 0: add_str("ax"); break;
case 1: add_str("cx"); break;
case 2: add_str("dx"); break;
case 3: add_str("bx"); break;
case 4: add_str("sp"); break;
case 5: add_str("bp"); break;
case 6: add_str("si"); break;
case 7: add_str("di"); break;
}
}
}
static void add_dbg_reg(unsigned reg) {
add_str("dr");
add_dec_uint32(reg);
}
static void add_ctrl_reg(unsigned reg) {
add_str("cr");
add_dec_uint32(reg);
}
static void add_op_31(uint32_t instr) {
uint32_t xop = bits_uint32(instr, 21, 10);
uint8_t rX = bits_uint8(instr, 6, 5);
uint8_t rA = bits_uint8(instr, 11, 5);
uint8_t rB = bits_uint8(instr, 16, 5);
switch (xop) {
case 0:
add_str("cmp");
add_str(" ");
add_dec_uint8(bits_uint8(instr, 6, 3));
add_str(", ");
add_dec_uint8(bits_uint8(instr, 10, 1));
add_str(", r");
add_dec_uint8(rA);
add_str(", r");
add_dec_uint8(rB);
break;
case 4:
add_str("tw");
add_str(" ");
add_dec_uint8(bits_uint8(instr, 6, 5));
add_str(", r");
add_dec_uint8(rA);
add_str(", r");
add_dec_uint8(rB);
break;
case 8:
add_xo_form(instr, "subfc");
break;
case 9:
add_xo_form(instr, "mulhdu");
break;
case 10:
add_xo_form(instr, "addc");
break;
case 11:
add_xo_form(instr, "mulhwu");
break;
case 19:
if (bits_uint8(instr, 11, 1) == 0) {
add_str("mfcr");
add_str(" r");
add_dec_uint8(bits_uint8(instr, 6, 5));
}
else {
add_str("mfocrf");
add_str(" r");
add_dec_uint8(bits_uint8(instr, 6, 5));
add_str(", ");
add_dec_uint8(bits_uint32(instr, 12, 8));
}
break;
case 20:
add_op_3r(instr, "lwarx");
break;
case 21:
add_op_3r(instr, "ldx");
break;
case 23:
add_op_3r(instr, "lwzx");
break;
case 24:
add_op_3r_rc(instr, "slw");
break;
case 26:
add_op_2r_rc(instr, "cntlzw");
break;
case 27:
add_op_3r_rc(instr, "sld");
break;
case 28:
add_op_3r_rc(instr, "and");
break;
case 32:
add_str("cmpl");
add_str(" ");
add_dec_uint8(bits_uint8(instr, 6, 3));
add_str(", ");
add_dec_uint8(bits_uint8(instr, 10, 1));
add_str(", r");
add_dec_uint8(rA);
add_str(", r");
add_dec_uint8(rB);
break;
case 40:
add_xo_form(instr, "subf");
break;
case 55:
add_op_3r(instr, "lwzux");
break;
case 73:
add_xo_form(instr, "mulhd");
break;
case 75:
add_xo_form(instr, "mulhw");
break;
case 83:
add_str("mfmsr");
add_str(" r");
add_dec_uint8(rX);
break;
case 104:
add_xo_form(instr, "neg");
break;
case 136:
add_xo_form(instr, "subfe");
break;
case 138:
add_xo_form(instr, "adde");
break;
case 146:
add_str("mtmsr");
add_str(" r");
add_dec_uint8(rX);
add_str(", ");
add_dec_uint8(bits_uint8(instr, 15, 1));
break;
case 200:
add_xo_form(instr, "subfze");
break;
case 202:
add_xo_form(instr, "addze");
break;
case 232:
add_xo_form2(instr, "subfme");
break;
case 233:
add_xo_form(instr, "mulld");
break;
case 234:
add_xo_form2(instr, "addme");
break;
case 235:
add_xo_form(instr, "mullw");
break;
case 266:
add_xo_form(instr, "add");
break;
case 339:
{
uint32_t spr = bits_uint8(instr, 11, 10);
if (spr == 1) {
add_str("mfxer");
add_str(" r");
add_dec_uint8(rX);
}
else if (spr == 8) {
add_str("mflr");
add_str(" r");
add_dec_uint8(rX);
}
else if (spr == 9) {
add_str("mfctr");
add_str(" r");
add_dec_uint8(rX);
}
else {
add_str("mfspr");
add_str(" r");
add_dec_uint8(rX);
add_str(", ");
add_dec_uint32(spr);
}
}
break;
case 444:
if (rX == rB) {
add_str("mr");
add_str(" r");
add_dec_uint8(rA);
add_str(", r");
add_dec_uint8(rX);
}
else {
add_str("or");
add_str(" r");
add_dec_uint8(rA);
add_str(", r");
add_dec_uint8(rX);
add_str(", r");
add_dec_uint8(rB);
}
break;
case 457:
add_xo_form(instr, "divdu");
break;
case 459:
add_xo_form(instr, "divwu");
break;
case 467:
{
uint32_t spr = bits_uint8(instr, 11, 10);
if (spr == 1) {
add_str("mtxer");
add_str(" r");
add_dec_uint8(rX);
}
else if (spr == 8) {
add_str("mtlr");
add_str(" r");
add_dec_uint8(rX);
}
else if (spr == 9) {
add_str("mtctr");
add_str(" r");
add_dec_uint8(rX);
}
else {
add_str("mtspr");
add_str(" ");
add_dec_uint32(spr);
add_str(", ");
add_dec_uint8(rX);
}
}
break;
case 489:
add_xo_form(instr, "divd");
break;
case 491:
add_xo_form(instr, "divw");
break;
case 792:
add_op_3r_rc(instr, "sraw");
break;
case 794:
add_op_3r_rc(instr, "srad");
break;
case 824:
add_op_3r_rc(instr, "srawi");
break;
case 922:
add_op_2r_rc(instr, "extsh");
break;
case 954:
add_op_2r_rc(instr, "extsb");
break;
case 986:
add_op_2r_rc(instr, "extsw");
break;
}
}
