Assembly 什么'；在gdb（Linux）中，x/s输出的含义是什么？
我正在用gdb调试一个C程序Assembly 什么'；在gdb（Linux）中，x/s输出的含义是什么？,assembly,gdb,Assembly,Gdb,我正在用gdb调试一个C程序 (gdb) r prog_name (gdb) break main (gdb) x/wx $esp (gdb) 0xbffff3d0: 0xbffff60d 我知道前3个命令的含义 我不明白的是最后一个的含义（第三个命令后gdb的输出）。 具体来说，我不明白：$esp是一个寄存器，因此我希望在寄存器中找到一个值，就我所知，寄存器没有地址。 那么，假设0xbffff60d是寄存器esp包含的值，那么**0xbffff3d0**是什么 提前感谢直接来自gdb
(gdb) r prog_name
(gdb) break main
(gdb) x/wx $esp
(gdb) 0xbffff3d0: 0xbffff60d
提前感谢直接来自gdb：
(gdb) help x
Examine memory: x/FMT ADDRESS.
ADDRESS is an expression for the memory address to examine.
FMT is a repeat count followed by a format letter and a size letter.
Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),
t(binary), f(float), a(address), i(instruction), c(char) and s(string),
T(OSType), A(floating point values in hex).
Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).
The specified number of objects of the specified size are printed
according to the format.
因此，在您的例子中，
$esp0xbfff3d0gdb*（uint32_t*）0xbfff3d00xbfff60d：
(gdb) help x
Examine memory: x/FMT ADDRESS.
ADDRESS is an expression for the memory address to examine.
FMT is a repeat count followed by a format letter and a size letter.
Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),
t(binary), f(float), a(address), i(instruction), c(char) and s(string),
T(OSType), A(floating point values in hex).
Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).
The specified number of objects of the specified size are printed
according to the format.
因此，在您的例子中，$esp
包含0xbfff3d0
，如果您将该值解释为指针并取消引用，您将直接从gdb
得到*（uint32_t*）0xbfff3d0
是0xbfff60d：
(gdb) help x
Examine memory: x/FMT ADDRESS.
ADDRESS is an expression for the memory address to examine.
FMT is a repeat count followed by a format letter and a size letter.
Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),
t(binary), f(float), a(address), i(instruction), c(char) and s(string),
T(OSType), A(floating point values in hex).
Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).
The specified number of objects of the specified size are printed
according to the format.
因此，在您的例子中，$esp
包含0xbfff3d0
，如果您将该值解释为指针并取消引用，您将直接从gdb
得到*（uint32_t*）0xbfff3d0
是0xbfff60d：
(gdb) help x
Examine memory: x/FMT ADDRESS.
ADDRESS is an expression for the memory address to examine.
FMT is a repeat count followed by a format letter and a size letter.
Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),
t(binary), f(float), a(address), i(instruction), c(char) and s(string),
T(OSType), A(floating point values in hex).
Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).
The specified number of objects of the specified size are printed
according to the format.
因此，在您的例子中，$esp
包含0xbfff3d0
，如果您将该值解释为指针并取消引用，您将得到*（uint32_t*）0xbfff3d0
是0xbfff60d
您是否尝试过帮助x
？我没有。我现在就做了。但是我没有看到任何输出解释。您是否尝试过帮助x
？我没有。我现在就做了。但是我没有看到任何输出解释。您是否尝试过帮助x
？我没有。我现在就做了。但是我没有看到任何输出解释。您是否尝试过帮助x0xbffff3d00xbffff60d0xbffff3d00xbffff60d0xbffff3d00xbffff60d0xbffff3d00xbffff60d