如何在 NASM 的 BSS 部分创建变量？
How to create a variable in the BSS section in NASM?
我试图在 NASM 的 BSS 部分创建一个变量：
section .bss
i DD 12345
但是当我试图创建一个目标文件时，我收到了以下警告：
warning: attempt to initialize memory in BSS section `.bss': ignored
我想这是可以理解的，因为 BSS 部分只能包含未初始化的变量。所以我尝试了以下操作：
section .bss
i DD 0
但我仍然收到相同的警告。
使用RESB和朋友。见 nasm manual:
3.2.2 RESB and Friends: Declaring Uninitialized Data
RESB, RESW, RESD, RESQ, REST, RESO, RESY and RESZ are designed to be
used in the BSS section of a module: they declare uninitialized
storage space. Each takes a single operand, which is the number of
bytes, words, doublewords or whatever to reserve. As stated in section
2.2.7, NASM does not support the MASM/TASM syntax of reserving uninitialized space by writing DW ? or similar things: this is what it
does instead. The operand to a RESB-type pseudo-instruction is a
critical expression: see section 3.8.
For example:
buffer: resb 64 ; reserve 64 bytes
我试图在 NASM 的 BSS 部分创建一个变量：
section .bss
i DD 12345
但是当我试图创建一个目标文件时，我收到了以下警告：
warning: attempt to initialize memory in BSS section `.bss': ignored
我想这是可以理解的，因为 BSS 部分只能包含未初始化的变量。所以我尝试了以下操作：
section .bss
i DD 0
但我仍然收到相同的警告。
使用RESB和朋友。见 nasm manual:
3.2.2 RESB and Friends: Declaring Uninitialized Data
RESB, RESW, RESD, RESQ, REST, RESO, RESY and RESZ are designed to be used in the BSS section of a module: they declare uninitialized storage space. Each takes a single operand, which is the number of bytes, words, doublewords or whatever to reserve. As stated in section 2.2.7, NASM does not support the MASM/TASM syntax of reserving uninitialized space by writing DW ? or similar things: this is what it does instead. The operand to a RESB-type pseudo-instruction is a critical expression: see section 3.8.
For example:
buffer: resb 64 ; reserve 64 bytes