librz/bin: fix the false-positive detection of the C166 bins as AVR bins

librz/bin/p/bin_avr.c

@@ -609,6 +609,10 @@ static bool avr_check_buffer(RzBuffer *buf) {
 	if (rz_buf_size(buf) < 32) {
 		return false;
 	}
+	ut8 c = 0;
+	if (!rz_buf_read8_at(buf, 0x0, &c) || c == 0xFA) {
+		return false; // This is a c166 jmp
+	}
 	return is_jmp(buf, 0) || is_rjmp(buf, 0);
 }
 

test/db/analysis/avr

@@ -12,6 +12,21 @@ EXPECT=<<EOF
 EOF
 RUN
 
+NAME=avr or c166 check - DISasm: [fac08400 => jump in c166]
+FILE=bins/c166/measure_raw.bin
+CMDS=<<EOF
+e asm.bytes=true
+ao 1~^jump[1]
+iA
+EOF
+EXPECT=<<EOF
+    offset size arch  bits machine big_endian 
+----------------------------------------------
+0x00000000 7958 unk_0   64         false
+EOF
+RUN
+
+
 NAME=avr DISasm: [0e940b10 => call] - jump check
 FILE=malloc://4096
 CMDS=<<EOF