Using LD, the GNU linker - Invocation --defsym symbol=expression Create a global symbol in the output file, containing the absolute address given by expression You may use this option as many times as necessary to define multiple symbols in the command line
ld(1) — Linux manual page - man7. org --defsym=symbol=expression Create a global symbol in the output file, containing the absolute address given by expression You may use this option as many times as necessary to define multiple symbols in the command line
Overwriting Symbols in the GNU Linker File | MCU on Eclipse So this is really a cool way to overwrite a symbol in the linker file, without touching the linker file itself After some digging, I have found a way how this can be done: with options in passed to the linker: It requires the -Xlinker option and the –defsym option: So to set the __heap_size__ to 0x600, I use
8. 3. 3 Defsym Option - Microchip Technology The --defsym sym = expr option defines a symbol This option creates a global symbol in the output file, containing the absolute address given by expr You may use this option as many times as necessary to define multiple symbols in the command line
[ELF] Support --defsym option to define an absolute symbol. - LLVM GNU LD's --defsym provides many more features For example, it allows users to specify another symbol name instead of a number to define a symbol alias, or it even allows a symbol plus an offset (e g --defsym=foo+3) to define symbol- relative alias
Using LD, the GNU linker - Invocation - University of Utah -defsym symbol=expression Create a global symbol in the output file, containing the absolute address given by expression You may use this option as many times as necessary to define multiple symbols in the command line
defining symbols with lld - LLVM Discussion Forums Currently Gnu ld supports an option --defsym symbol=expression The expression may be composed of other symbols Any symbol that appears in the expression, gets its value from the output symbol value (address of the symbol in the output file)
为什么链接器修改一个–defsym“绝对地址” 中国服务器网 目标：使用可执行文件（不导出符号）的函数的 共享 库。 "--defsym symbol=expression" Create a global symbol in the output file, containing the absolute address given by expression 将一个静态库链接到共享库？ 如何链接在Linux共享库与其他共享库？ 如何在Linux中由两个不同的进程调用共享库文件？ 如何列出连接到Linux共享内存段的进程？ objdump在库中显示正确的符号地址（ 0x432238 ），但是一旦用 dlopen () 加载，符号的地址为 0x7ffff6ba1238 。
ld - The GNU linker at Linux. org --defsym=symbol=expression Create a global symbol in the output file, containing the absolute address given by expression You may use this option as many times as necessary to define multiple symbols in the command line