我正在开发类似汇编程序的nasm，现在正在编写生成COFF格式文件的进程。
我的问题非常具体，我在value上遇到名为COFF Symbol Table的字段。我找不到计算或指定它的方法。
我阅读了文件{{3}}。在一篇文章之后，我指的是：
The Symbol Table described in this section is inherited from the traditional COFF format.
It is distinct from CodeView® information. A file may contain both a COFF Symbol
Table and CodeView debug information, and the two are kept separate. Some Microsoft
tools use the Symbol Table for limited but important purposes, such as communicating
COMDAT information to the linker. Section names and file names, as well as code and
data symbols, are listed in the Symbol Table.
The location of the Symbol Table is indicated in the COFF Header.
The Symbol Table is an array of records, each 18 bytes long. Each record is either a
standard or auxiliary symbol-table record. A standard record defines a symbol or name,
and has the following format:
|--------| -----|---------------|-------------------------------------------------------------------|
| Offset | Size | Field | Description |
|--------| -----|---------------|-------------------------------------------------------------------|
| 0 | 8 | Name (*) | Name of the symbol, represented by union of three structures. |
| | | | An array of eight bytes is used if the name is not more than |
| | | | eight bytes long. See Section 5.4.1, |
| | | | "Symbol Name Representation, " for more information. |
----------------------------------------------------------------------------------------------------|
| 8 | 4 | Value | Value associated with the symbol. |
| | | | The interpretation of this field depends on Section Number |
| | | | and Storage Class. A typical meaning is the relocatable address. |
----------------------------------------------------------------------------------------------------|
| 12 | 2 | SectionNumber | Signed integer identifying the section, using a one-based index |
| | | | into the Section Table. Some values have special meaning defined |
| | | | in "Section Number Values." |
----------------------------------------------------------------------------------------------------|
| 14 | 2 | Type | representing type. Microsoft tools set this field to 0x20 |
| | | | (function) or 0x0 (not a function). See Section 5.4.3, |
| | | | "Type Representation," for more information. |
----------------------------------------------------------------------------------------------------|
| 16 | 1 | StorageClass | Enumerated value representing storage class. |
| | | | See Section 5.4.4, "Storage Class," for more information. |
| | | | |
----------------------------------------------------------------------------------------------------|
| 17 | 1 | NumberOfAux | Number of auxiliary symbol table entries that follow this record. |
| | | Symbols | |
----------------------------------------------------------------------------------------------------|
我想知道指定Value字段来定义基本C函数符号的方法，例如_test
// define basic C function, I think it will be the symbol like "_test" in COFF files.
void test(int value) { return;}
该文件称Value字段代表relocatable address。怎么知道？
答案 0 :(得分：1)
最后，我意识到value字段的含义。
此字段表示符号表开头的偏移值。 如果符号和另一个符号之间有任何机器代码，则该值应包含那些字节大小。