On 30 Oct 2008, at 02:34, Nicholas Nethercote wrote:
On Wed, 29 Oct 2008, Jonny Taylor wrote:
This is probably a basic question, but I can't find any
information in
the docs or through web searches. How can I get cachegrind to
annotate
my code at the instruction level when the source is C code? I can get
C code annotated at source level, and the docs describe how to get
assembly code annotated at instruction level, but can't work out how
to get an instruction-level annotation for what was originally C
code.
What would the annotated code look like? I think you'll just have
to annotate the assembly code, and then mentally map that back to
the C code.
...
I'm confused by some of your terminology, particularly
"disassembly", as in "with debugs symbols disabled when doing the
disassembly".
Apologies for not being clear - I talked a lot about what I'd tried
and failed with, but what I want to achieve is very simple I think.
Probably best to ignore what I wrote the first time if I was unclear.
I have a program written in C++, which is normally compiled with gcc
to object files and then linked (with gcc). I can get cachegrind/
cg_annotate to display source-level output like this:
. . . . . . . . . void init_hash_table(char *file_name, Word_Node
*table[])
3 1 1 . . . 1 0 0 {
. . . . . . . . . FILE *file_ptr;
. . . . . . . . . Word_Info *data;
1 0 0 . . . 1 1 1 int line = 1, i;
. . . . . . . . .
5 0 0 . . . 3 0 0 data = (Word_Info *) create(sizeof(Word_Info));
but I would like to see instruction-level output something like this
init_hash_table:
1 0 0 . . . . . . leal -12(%ebp),%eax
1 0 0 . . . 1 0 0 movl %eax,84(%ebx)
1 0 0 0 0 0 1 0 0 movl $1,-20(%ebp)
1 0 0 . . . . . . movl $.LnrB,%eax
1 0 0 . . . 1 0 0 movl %eax,-16(%ebp)
Any advice on how to achieve that would be very helpful!
Cheers
Jonny-------------------------------------------------------------------------
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