# 在程序集中搜索

If you want to search for a certain assembler opcodes, you can use `/a` commands.

The command `/ad/ jmp [esp]` searches for the specified category of assembly mnemonic:

```
[0x00404888]> /ad/ jmp qword [rdx]
f hit_0 @ 0x0040e50d   # 2: jmp qword [rdx]
f hit_1 @ 0x00418dbb   # 2: jmp qword [rdx]
f hit_2 @ 0x00418fcb   # 3: jmp qword [rdx]
f hit_3 @ 0x004196ab   # 6: jmp qword [rdx]
f hit_4 @ 0x00419bf3   # 3: jmp qword [rdx]
f hit_5 @ 0x00419c1b   # 3: jmp qword [rdx]
f hit_6 @ 0x00419c43   # 3: jmp qword [rdx]
```

The command `/a jmp eax` assembles a string to machine code, and then searches for the resulting bytes:

```
[0x00404888]> /a jmp eax
hits: 1
0x004048e7 hit3_0 ffe00f1f8000000000b8
```


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://vxerlee.gitbook.io/radare2/intro-4/search_in_assembly.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.