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2002-11-29 Andrew Cagney <ac131313@redhat.com> 

* frame.h (get_selected_block): Add comments.
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Andrew Cagney 2002-11-29 15:39:51 +00:00
parent fe67b6c54e
commit 805e2818d6
2 changed files with 30 additions and 0 deletions
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gdb/ChangeLog
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@ -1,3 +1,7 @@
2002-11-29 Andrew Cagney <ac131313@redhat.com>
* frame.h (get_selected_block): Add comments.
2002-11-28 Andrew Cagney <ac131313@redhat.com>
* frame.c (pc_notcurrent): New function.

26
gdb/frame.h
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@ -442,6 +442,32 @@ extern void get_frame_saved_regs (struct frame_info *,
extern struct block *get_frame_block (struct frame_info *,
CORE_ADDR *addr_in_block);
/* Return the `struct block' that belongs to the selected thread's
selected frame. If the inferior has no state, return NULL.
NOTE: cagney/2002-11-29:
No state? Does the inferior have any execution state (a core file
does, an executable does not). At present the code tests
`target_has_stack' but I'm left wondering if it should test
`target_has_registers' or, even, a merged target_has_state.
Should it look at the most recently specified SAL? If the target
has no state, should this function try to extract a block from the
most recently selected SAL? That way `list foo' would give it some
sort of reference point. Then again, perhaphs that would confuse
things.
Calls to this function can be broken down into two categories: Code
that uses the selected block as an additional, but optional, data
point; Code that uses the selected block as a prop, when it should
have the relevant frame/block/pc explicitly passed in.
The latter can be eliminated by correctly parameterizing the code,
the former though is more interesting. Per the "address" command,
it occures in the CLI code and makes it possible for commands to
work, even when the inferior has no state. */
extern struct block *get_selected_block (CORE_ADDR *addr_in_block);
extern struct symbol *get_frame_function (struct frame_info *);