I am generating an ELF file for ARM platform using linaro tool chain. The file is an executable that is supposed to run bare-metal.
I use a linker script to select the locations of sections in the memory because I want to put specific sections in specific locations.
The problem is that when I move some section forward in the memory I see that the image size increases, although no additional data has been added.
When I run readelf -a elf_file I see that both the virtual address (see Address field below) and the offset in image (See Offset field below) are both increased.
Example:
The following lines in the linker script
. = 0x2000000;
.__translations_block_0 : { TM_TranslationTables.o(__translations_block_0) }
Result in the following offsets in the elf file (output from readelf)
[Nr] Name Type Address Offset Size EntSize Flags Link Info Align
[10] .tdata PROGBITS 0000000000279000 00279080 000000000000000c 0000000000000000 WAT 0 0 16
[11] .tbss NOBITS 0000000000279080 0027908c 0000000000011bcc 0000000000000000 WAT 0 0 16
[12] .__translations_b PROGBITS 0000000002000000 02000080 0000000000000008 0000000000000000 WA 0 0 8
[13] .__translations_b PROGBITS 0000000002001000 02001080 0000000000000008 0000000000000000 WA 0 0 8
My question is:
Is there a way to increase the address of some section without blowing the image size? I just want the section to be loaded into memory address 0x2000000, I don't want the image size to be 0x2000000.
Any help would be appreciated.
