Re: Breakpoint on first instruction in program

I am currently updating the book for version 4.7.0 of gcc. As I do this, 
I am fixing typos, etc. There are several ways to contribute:

1. Send me feedback about any problems you see in the book: typos, parts 
that are difficult to understand, errors, etc.
2. Donate money (a sort of "royalty" for this free version) using either 
www.paypal.com or payments.amazon.com; my email address for this is 
[email protected].
3. Wait until I publish the updated version of the book and buy it. 
Hopefully, this will be in a month or two. I plan to sell it through 
www.lulu.com in both pdf and paper versions. I plan to keep the price 
low, in the order of $10 - $15 for the pdf and $30 - $40 for the paper. 
Anyone who cannot afford to pay should contact me for other arrangements.

Of these three ways, number 1 is the most appreciated. My main goal is 
to create a book that is as useful as possible.

--Bob

On 06/21/2012 09:04 AM, Iurie wrote:
> hi,
> i found your book very interesting. Can i also somehow contribute to it?
>
>
>
> On 21 June 2012 16:41, Bob Plantz <[email protected] 
> <mailto:[email protected]>> wrote:
>
>     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 <http://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 <[email protected]
>>     <mailto:[email protected]>> 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
>>
>>
>>
>
>