[Bug 20509] gdb proxy mode: random reply to Offsets query

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=20509





--- Comment #3 from Paul Bolle <pebolle at tiscali.nl>  2009-11-01 06:49:00 ---
(In reply to comment #2)
> first of all wine_segs[0..2] must be initialized to 0 in gdb_init_context

0) Only if they're not set to something meaningful before they're used.
1) The code will currently return an error packet if all three are zero.

> it would be rather straightforward to get a correct value for wine_segs[0] (aka
> code) as it's the base address of the main module, 

2) Wine's main module?

> which we could get in gdb_startup
> 
> however, wine_segs[1] (aka data) would be more difficult to get
> note, it seems that when Data=XXX, BSS=XXX is ignored by gdb

3) According to gdb's documentation. gdb's code requires Bss=[...], even though
its value must be equal to Data=[...]. Rather silly.

> moreover, latest gdb version also use CodeSeg, DataSeg (instead of Code, Data)
> in order to provide linear addresses instead of offsets for relocation, which
> will be handier in our case

4) How can CodeSeg and DataSeg be determined?

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