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.text .global _start _start: mov (%rsp),%rdi /* move argc into 1st argument slot */ lea 4(%rsp),%rsi /* move argv into 2nd argument slot */ call __dynlink /* in case the dynlinker was called directly, it sets the "consumed" argv values to -1. so we must loop over the array as long as -1 is in the top argv slot, decrement argc, and then set the stackpointer to the new argc as well as argc's new value. as the x32 abi has longs in the argv array, we cannot use push/pop.*/ movl (%rsp),%edi /* copy argc into edi */ xor %rdx,%rdx /* we use rdx as an offset to the current argv member */ 1: dec %edi addl $4, %edx movl (%rsp, %rdx), %esi cmp $-1,%esi jz 1b inc %edi subl $4, %edx lea (%rsp, %rdx), %rsp /* set rsp to new argv[-1] */ movl %edi, (%rsp) /* write new argc there */ xor %edx,%edx jmp *%rax |