ppc: alias instruction for 'gBC 4, 2, target' to 'bne target'. issue reported by @kratolp

arch/PowerPC/PPCGenAsmWriter.inc

@@ -7713,6 +7713,16 @@ static char *printAliasInstr(MCInst *MI, SStream *OS, void *info)
       AsmString = "bt $\x02, $\xFF\x03\x01";
       break;
     }
+    if (MCInst_getNumOperands(MI) == 3 &&
+        MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
+        MCOperand_getImm(MCInst_getOperand(MI, 0)) == 4 &&
+        MCOperand_isReg(MCInst_getOperand(MI, 1)) &&
+        PPC_map_register(MCOperand_getReg(MCInst_getOperand(MI, 1))) == PPC_REG_R2 &&
+        GETREGCLASS_CONTAIN(PPC_CRBITRCRegClassID, 1)) {
+      // (gBC 4, crbitrc:$bi, condbrtarget:$dst)
+      AsmString = "bne $\xFF\x03\x02";
+      break;
+    }
     if (MCInst_getNumOperands(MI) == 3 &&
         MCOperand_isImm(MCInst_getOperand(MI, 0)) &&
         MCOperand_getImm(MCInst_getOperand(MI, 0)) == 4 &&

arch/PowerPC/PPCInstPrinter.c

@@ -454,6 +454,7 @@ static void printAbsBranchOperand(MCInst *MI, unsigned OpNo, SStream *O)
 		else
 			SStream_concat(O, "-%u", -imm);
 	}
+
 	if (MI->csh->detail) {
 		MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].type = PPC_OP_IMM;
 		MI->flat_insn->detail->ppc.operands[MI->flat_insn->detail->ppc.op_count].imm = imm;