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| author | Tom Tromey <tromey@redhat.com> | 2010-06-02 19:37:56 +0000 |
|---|---|---|
| committer | Tom Tromey <tromey@redhat.com> | 2010-06-02 19:37:56 +0000 |
| commit | 9eae7c5264c14e142dd52988f70d58f62755b2d0 (patch) | |
| tree | 526ab8c146436f412c8cb66a4e5b0457714ad482 /gdb/doc | |
| parent | 359cc68c808f70750a020c9bb76de330735a3202 (diff) | |
| download | gdb-9eae7c5264c14e142dd52988f70d58f62755b2d0.zip gdb-9eae7c5264c14e142dd52988f70d58f62755b2d0.tar.gz gdb-9eae7c5264c14e142dd52988f70d58f62755b2d0.tar.bz2 | |
gdb
* dwarf2loc.h (dwarf2_per_cu_data): Declare.
* dwarf2read.c (dwarf_stack_op_name): No longer static. Return
type is const. Add 'def' argument. Add missing operators, remove
unhandled ones.
(decode_locdesc): Update.
(dwarf2_always_disassemble): New global.
(show_dwarf2_always_disassemble): New function.
(_initialize_dwarf2_read): Add always-disassemble.
(dwarf2_per_cu_offset_size): New function.
* dwarf2loc.c (dwarf2_always_disassemble): Declare.
(piece_end_p): New function.
(locexpr_describe_location_piece): Replace 'size' argument with
'end'. Use piece_end_p. Rewrite recognition of TLS. Recognize
some constants. Remove errors.
(disassemble_dwarf_expression): New function.
(locexpr_describe_location_1): Use disassemble_dwarf_expression.
Add 'offset_size' argument.
(loclist_describe_location): Change output formatting.
* dwarf2expr.h (dwarf_stack_op_name): Declare.
gdb/doc
* gdb.texinfo (Maintenance Commands): Document maint set dwarf2
always-disassemble.
Diffstat (limited to 'gdb/doc')
| -rw-r--r-- | gdb/doc/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 25 |
2 files changed, 30 insertions, 0 deletions
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index 4ffe455..73e226d 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,8 @@ +2010-06-02 Tom Tromey <tromey@redhat.com> + + * gdb.texinfo (Maintenance Commands): Document maint set dwarf2 + always-disassemble. + 2010-06-01 Pedro Alves <pedro@codesourcery.com> * gdb.texinfo (Set Tracepoints): Mention tracepoints support in diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index 178ef68..37278c8 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -29979,6 +29979,31 @@ that symbol is described. The type chain produced by this command is a recursive definition of the data type as stored in @value{GDBN}'s data structures, including its flags and contained types. +@kindex maint set dwarf2 always-disassemble +@kindex maint show dwarf2 always-disassemble +@item maint set dwarf2 always-disassemble +@item maint show dwarf2 always-disassemble +Control the behavior of @code{info address} when using DWARF debugging +information. + +The default is @code{off}, which means that @value{GDBN} should try to +describe a variable's location in an easily readable format. When +@code{on}, @value{GDBN} will instead display the DWARF location +expression in an assembly-like format. Note that some locations are +too complex for @value{GDBN} to describe simply; in this case you will +always see the disassembly form. + +Here is an example of the resulting disassembly: + +@smallexample +(gdb) info addr argc +Symbol "argc" is a complex DWARF expression: + 1: DW_OP_fbreg 0 +@end smallexample + +For more information on these expressions, see +@uref{http://www.dwarfstd.org/, the DWARF standard}. + @kindex maint set dwarf2 max-cache-age @kindex maint show dwarf2 max-cache-age @item maint set dwarf2 max-cache-age |