Assembly Language
GDB and DDD can be extremely useful in debugging assembly language code. There are a number of special considerations to keep in mind, which will be described in this section.
Take as an example the code in file testff.s:
1 # the subroutine findfirst(v,w,b) finds the first instance of a value v 2 # in a block of w consecutive words of memory beginning at b, returning 3 # either the index of the word where v was found (0, 1, 2, ...) or -1 if 4 # v was not found; beginning with _start, we have a short test of the 5 # subroutine 6 7 .data # data segment 8 x: 9 .long 1 10 .long 5 11 .long 3 12 .long 168 13 .long 8888 14 .text # code segment 15 .globl _start # required 16 _start: # required to use this label unless special ...
Get The Art of Debugging with GDB, DDD, and Eclipse now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
