On 05/04/2018 08:07, Hao Lee wrote: > I'm confused about the location counter, especially when setting it to > a new value in the output section. > > I write a simple program and a linker script to make my question more > clear. The code is as follows: [snip] > > I can't understand why lable_2 is 0x30. As the LD documentation > says[1], if '.' is used inside a section description, it refers to the > byte offset from the start of that section, not an absolute address. > In the custom_section, '.' is set to 0x20 which is a relative address, > so I think label_2 should also be 0x20. However, label_2 is 0x30. (The > value of label_3 is reasonable because it's an absolute address.) > > Could someone please explain why label_2 is 0x30? Thanks! > > [1] https://sourceware.org/binutils/docs-2.30/ld/Location-Counter.html#Location-Counter Hello, 'gas' (GNU assembler) and 'ld' (GNU linker) are Binutils tools. AFAIU, Binutils and GCC are separate projects -- with GCC producing assembly code processed by gas and then ld. Thus, you might have better luck asking on the binutils mailing list: binutils@xxxxxxxxxxxxxx https://sourceware.org/ml/binutils/ Regards.
