> Manual commit: Bug fix for lexer, '%eax' off-by-1 error

U201614531
recolic
Linux RECOLICPC 5.4.2-arch1-1 #1 SMP PREEMPT Thu, 05 Dec 2019 12:29:40 +0000 x86_64 GNU/Linux
 03:48:03 up 3 days, 11:06,  1 user,  load average: 0.30, 0.46, 0.91
308942fa767af1bf582c0816fcd66d09f9cfeea3

nemu/src/monitor/debug/expr_impl/lexer.l

@@ -19,6 +19,6 @@
 "&&"          {return T_LOGICAL_AND;}
 [-+*/()]      {return yytext[0];}
 
-"%"[a-z]{3}   {yylval.ival = ((uint32_t)yytext[1] << 8) + yytext[2]; return T_REG;}
+"%"[a-z]{3}   {yylval.ival = ((uint32_t)yytext[2] << 8) + yytext[3]; return T_REG;}
 %%
 // Registers: eax='a'+'x', ebx='b'+'x', ...