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Adding addzex.

This commit is contained in:
Ben Vanik 2013-05-23 02:13:04 -07:00
parent 7d95098792
commit 730dba4aea
1 changed files with 24 additions and 23 deletions
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47
src/xenia/cpu/libjit/libjit_emit_alu.cc
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@ -117,31 +117,32 @@ XEEMITTER(addmex, 0x7C0001D4, XO )(LibjitEmitter& e, jit_function_t f, Ins
return 1;
}
// XEEMITTER(addzex, 0x7C000194, XO )(LibjitEmitter& e, jit_function_t f, InstrData& i) {
// // RT <- (RA) + CA
XEEMITTER(addzex, 0x7C000194, XO )(LibjitEmitter& e, jit_function_t f, InstrData& i) {
// RT <- (RA) + CA
// Function* sadd_with_overflow = Intrinsic::getDeclaration(
// e.gen_module(), Intrinsic::sadd_with_overflow, jit_type_nint);
// jit_value_t ca = jit_insn_and(f, jit_insn_ushr(f, e.xer_value(), 29), 0x1);
// jit_value_t v = b.CreateCall2(sadd_with_overflow,
// e.gpr_value(i.XO.RA), ca);
// jit_value_t add_value = b.CreateExtractValue(v, 0);
// e.update_gpr_value(i.XO.RT, add_value);
// if (i.XO.OE) {
// // With XER[SO] update too.
// e.update_xer_with_overflow_and_carry(b.CreateExtractValue(v, 1));
// } else {
// // Just CA update.
// e.update_xer_with_carry(b.CreateExtractValue(v, 1));
// }
// TODO(benvanik): handle overflow exception.
jit_value_t ca = jit_insn_and(f,
jit_insn_ushr(f, e.xer_value(), e.get_uint32(29)),
e.get_uint64(0x1));
jit_value_t v = jit_insn_add_ovf(f,
e.make_signed(e.gpr_value(i.XO.RA)),
e.make_signed(ca));
e.update_gpr_value(i.XO.RT, v);
if (i.XO.OE) {
// With XER[SO] update too.
//e.update_xer_with_overflow_and_carry(b.CreateExtractValue(v, 1));
} else {
// Just CA update.
//e.update_xer_with_carry(b.CreateExtractValue(v, 1));
}
// if (i.XO.Rc) {
// // With cr0 update.
// e.update_cr_with_cond(0, add_value, e.get_int64(0), true);
// }
if (i.XO.Rc) {
// With cr0 update.
e.update_cr_with_cond(0, v, e.get_int64(0), true);
}
// return 0;
// }
return 0;
}
XEEMITTER(divdx, 0x7C0003D2, XO )(LibjitEmitter& e, jit_function_t f, InstrData& i) {
XEINSTRNOTIMPLEMENTED();
@ -1024,7 +1025,7 @@ void LibjitRegisterEmitCategoryALU() {
XEREGISTERINSTR(addicx, 0x34000000);
XEREGISTERINSTR(addis, 0x3C000000);
XEREGISTERINSTR(addmex, 0x7C0001D4);
//XEREGISTERINSTR(addzex, 0x7C000194);
XEREGISTERINSTR(addzex, 0x7C000194);
XEREGISTERINSTR(divdx, 0x7C0003D2);
XEREGISTERINSTR(divdux, 0x7C000392);
//XEREGISTERINSTR(divwx, 0x7C0003D6);