On 06/21/2012 03:46 AM, Iurie wrote:
Hi Bob,
what course u are teaching out there? give me the link to it, perhaps i will learn there something useful as i am also a student.

I retired from teaching in 2004, but I keep my book, Introduction to Computer Architecture, updated. It is available on my web site: bob.cs.sonoma.edu

I checked info gdb. Under Source->Specify Location I found an entry for `*ADDRESS'. Apparently, the *ADDRESS form is for C, C++, Java, Objective-C, Fortran, minimal, and assembly. The *&ADDRESS' form is for Pascal and Modula-2. However, it seems that gdb is forgiving between these two forms. And, from my personal experience, this can differ between versions and can change over time.

--Bob



On 21 June 2012 05:09, Bob Plantz <pla...@ieee.org <mailto:pla...@ieee.org>> wrote:

    On 6/20/2012 1:39 PM, Adam Beneschan wrote:


            I am using the following assembly language program
            (doNothingProg.s) for
            instruction purposes:

                     .text
                     .globl  main
                     .type   main, @function
            main:
                     pushq   %rbp        # save caller's frame pointer
                     movq    %rsp, %rbp  # establish our frame pointer
                     movl    $0, %eax    # return 0 to caller
                     movq    %rbp, %rsp  # restore stack pointer
                     popq    %rbp        # restore caller's frame pointer
                     ret                 # back to caller

            I want to set a breakpoint at the first instruction (pushq
            %rbp) so
            students can see how the stack frame is created.

        break *&main

                                        -- Adam

    Thank you for the response Adam.

    Actually, break *main worked for me. (Or just br *main). I'm not
    in Linux right now, but I will double check next time I log in.

    I found this by using info gdb and some looking around. As usual,
    the answer is in the documentation, as I often told my students. :-[

    --Bob




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