Date: Fri, 8 Jan 2016 12:09:54 +0100 From: Markus Wichmann <nullplan@....net> To: musl@...ts.openwall.com Subject: Re: dynamic linker command line invocation On Thu, Jan 07, 2016 at 06:29:48PM -0500, N Jain wrote: > Hi Rich, > > Thanks I am able to get my dynamic linker loaded into memory but facing > issue during application load at __dls3 function. > I am getting following print from MUSL - > > "musl libc > Version 1.1.10 > Dynamic Program Loader > Usage: hello.elf [options] [--] pathname--2--" > > Not sure why my application is not getting loaded in below code __dls3 > function ? > That's what I was trying to tell you in my first answer: You need to set argv to something (doesn't matter so long as it's not "ldd"), and argv to the program file you want to run. (And argc to 2, obviously). The only alternative to that is to load the program file in the kernel additionally to musl, and then set the following aux vectors: AT_BASE - base address of dynamic linker AT_PHDR - address of main executable's program headers AT_PHNUM, AT_PHENT - number and size of main executable's program headers, respectively. AT_ENTRY - main executable's entry point Ciao, Markus
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