> On May 23, 2018, at 4:55 PM, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > >> On Wed, May 23, 2018 at 3:53 PM Laura Abbott <labbott@xxxxxxxxxx> wrote: >> >> Actually I remember now why this is necessary: there is not a simple way >> to encode a string into a linker file as it has to be spit out byte >> by byte. > > I think you can use the "fill" thing to basically add any random data to a > section. > > So you can do something like > > . = ALIGN(16); > .salt : AT(ADDR(.salt) - LOAD_OFFSET) { > LONG(0xffaa5500); > . = ALIGN(16); > } =0x01234567890abcdef > > in the lds file, and you'll get a section that looks like this: > > [torvalds@i7 linux]$ objdump -h vmlinux -j .salt -s > > vmlinux: file format elf64-x86-64 > > Sections: > Idx Name Size VMA LMA File off > Algn > 15 .salt 00000010 ffffffff8432b000 000000000432b000 0352b000 > 2**0 > CONTENTS, ALLOC, LOAD, DATA > Contents of section .salt: > ffffffff8432b000 0055aaff 00123456 7890abcd ef001234 .U....4Vx......4 > > Now whether that is sufficient for your needs, I dunno. > I don’t know whether I’m missing something obvious, but can’t this be in C? asm (“.pushsection \”.comment\”; .ascii \”” WHATEVER “\”; .popsection”); Or the .S equivalent. -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html