Hi,
I'm posting an updated patch for GCC gdbinit originally proposed by Konstantin.
The patch amends debugging shorthands such as 'pr' to accept an explicit
argument, in addition to taking an implicit argument from $ as today. In other
words,
pr x
will be accepted to call 'debug_rtx (x)' just like
p x
pr
does today.
I've noticed Konstantin's patch left documentation bits inconsistent with the
new implementation, so I amended them manually and introduced a new
'help-gcc-hooks' command with the index and some general info. I also fixed a
leftover '$' remaining in 'prc' command.
Okay to apply?
Alexander
* gdbinit.in (help-gcc-hooks): New command.
(pp, pr, prl, pt, pct, pgg, pgq, pgs, pge, pmz, ptc, pdn, ptn, pdd, prc,
pi, pbm, pel, trt): Take $arg0 instead of $ if supplied. Update
documentation.
diff --git a/gcc/gdbinit.in b/gcc/gdbinit.in
index 4a5b682451b..8c5f9911ec5 100644
--- a/gcc/gdbinit.in
+++ b/gcc/gdbinit.in
@@ -16,154 +16,216 @@
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
+define help-gcc-hooks
+help help-gcc-hooks
+end
+
+document help-gcc-hooks
+GCC gdbinit file introduces several debugging shorthands:
+
+ pr [rtx], prl [rtx], prc [rtx], pi [rtx_insn],
+ pt [tree], pct [tree], ptc [tree], trt [tree],
+ pgs [tree], pge [tree], pdn [tree], ptn [tree],
+ pgg [gimple], pgq [gimple_seq],
+ pmz [mpz_t],
+ pdd [dw_die_ref],
+ pbm [bitmap],
+ pel [location_t],
+ pp, pbs, pcfun
+
+They are generally implemented by calling a function that prints to stderr,
+and therefore will not work when the compiler is not executing.
+
+Most shorthands accept an optional argument. When it is not supplied,
+they use value in GDB register $, i.e. the last printed value.
+end
+
define pp
-call debug ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug ($debug_arg)
end
document pp
-Print a representation of the GCC data structure that is $.
-Works only when an inferior is executing.
+GCC hook: pp [any]
+Print a representation of any GCC data structure for which an instance of
+overloaded function 'debug' is available.
+See also 'help-gcc-hooks'.
end
define pr
-call debug_rtx ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_rtx ($debug_arg)
end
document pr
-Print the full structure of the rtx that is $.
-Works only when an inferior is executing.
+GCC hook: pr [rtx]
+Print the full structure of given rtx.
+See also 'help-gcc-hooks'.
end
define prl
-call debug_rtx_list ($, debug_rtx_count)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_rtx_list ($debug_arg, debug_rtx_count)
end
document prl
-Print the full structure of all rtx insns beginning at $.
-Works only when an inferior is executing.
+GCC hook: prl [rtx]
+Print the full structure of all rtx insns beginning at given rtx.
Uses variable debug_rtx_count to control number of insns printed:
- debug_rtx_count > 0: print from $ on.
- debug_rtx_count < 0: print a window around $.
+ debug_rtx_count > 0: print from given rtx on.
+ debug_rtx_count < 0: print a window around given rtx.
There is also debug_rtx_find (rtx, uid) that will scan a list for UID and print
it using debug_rtx_list. Usage example: set $foo=debug_rtx_find(first, 42)
end
define pt
-call debug_tree ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_tree ($debug_arg)
end
document pt
-Print the full structure of the tree that is $.
-Works only when an inferior is executing.
+GCC hook: pt [tree]
+Print the full structure of given tree.
+See also 'help-gcc-hooks'.
end
define pct
-call debug_c_tree ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_c_tree ($debug_arg)
end
document pct
-Print the tree that is $ in C syntax.
-Works only when an inferior is executing.
+GCC hook: pct [tree]
+Print given tree in C syntax.
+See also 'help-gcc-hooks'.
end
define pgg
-call debug_gimple_stmt ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_gimple_stmt ($debug_arg)
end
document pgg
-Print the Gimple statement that is $ in C syntax.
-Works only when an inferior is executing.
+GCC hook: pgg [gimple]
+Print given GIMPLE statement in C syntax.
+See also 'help-gcc-hooks'.
end
define pgq
-call debug_gimple_seq ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_gimple_seq ($debug_arg)
end
document pgq
-Print the Gimple sequence that is $ in C syntax.
-Works only when an inferior is executing.
+GCC hook: pgq [gimple_seq]
+Print given GIMPLE sequence in C syntax.
+See also 'help-gcc-hooks'.
end
define pgs
-call debug_generic_stmt ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_generic_stmt ($debug_arg)
end
document pgs
-Print the statement that is $ in C syntax.
-Works only when an inferior is executing.
+GCC hook: pgq [tree]
+Print given GENERIC statement in C syntax.
+See also 'help-gcc-hooks'.
end
define pge
-call debug_generic_expr ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_generic_expr ($debug_arg)
end
document pge
-Print the expression that is $ in C syntax.
-Works only when an inferior is executing.
+GCC hook: pge [tree]
+Print given GENERIC expression in C syntax.
+See also 'help-gcc-hooks'.
end
define pmz
-call mpz_out_str(stderr, 10, $)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call mpz_out_str(stderr, 10, $debug_arg)
end
document pmz
-Print the mpz value that is $
-Works only when an inferior is executing.
+GCC hook: pmz [mpz_t]
+Print given mpz value.
+See also 'help-gcc-hooks'.
end
define ptc
-output (enum tree_code) $.base.code
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+output (enum tree_code) $debug_arg.base.code
echo \n
end
document ptc
-Print the tree-code of the tree node that is $.
+GCC hook: ptc [tree]
+Print the tree-code of given tree node.
+See also 'help-gcc-hooks'.
end
define pdn
-output $.decl_minimal.name->identifier.id.str
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+output $debug_arg.decl_minimal.name->identifier.id.str
echo \n
end
document pdn
-Print the name of the decl-node that is $.
+GCC hook: pdn [tree]
+Print the name of given decl-node.
+See also 'help-gcc-hooks'.
end
define ptn
-output $.type.name->decl_minimal.name->identifier.id.str
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+output $debug_arg.type.name->decl_minimal.name->identifier.id.str
echo \n
end
document ptn
-Print the name of the type-node that is $.
+GCC hook: ptn [tree]
+Print the name of given type-node.
+See also 'help-gcc-hooks'.
end
define pdd
-call debug_dwarf_die ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call debug_dwarf_die ($debug_arg)
end
document pdd
-Print the dw_die_ref that is in $.
+GCC hook: pdd [dw_die_ref]
+Print given dw_die_ref.
+See also 'help-gcc-hooks'.
end
define prc
-output (enum rtx_code) $.code
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+output (enum rtx_code) $debug_arg.code
echo \ (
-output $.mode
+output $debug_arg.mode
echo )\n
end
document prc
-Print the rtx-code and machine mode of the rtx that is $.
+GCC hook: prc [rtx]
+Print the rtx-code and machine mode of given rtx.
+See also 'help-gcc-hooks'.
end
define pi
-print $.u.fld[0].rt_rtx@7
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+print $debug_arg.u.fld[0].rt_rtx@7
end
document pi
-Print the fields of an instruction that is $.
+GCC hook: pi [rtx_insn]
+Print the fields of given RTL instruction.
+See also 'help-gcc-hooks'.
end
define pbs
@@ -176,20 +238,26 @@ including the global binding level.
end
define pbm
-call bitmap_print (stderr, $, "", "\n")
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+call bitmap_print (stderr, $debug_arg, "", "\n")
end
document pbm
-Dump the bitmap that is in $ as a comma-separated list of numbers.
+GCC hook: pbm [bitmap]
+Dump given bitmap as a comma-separated list of numbers.
+See also 'help-gcc-hooks'.
end
define pel
-output expand_location ($)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+output expand_location ($debug_arg)
echo \n
end
document pel
-Print expanded location of $.
+GCC hook: pel [location_t]
+Print given location.
+See also 'help-gcc-hooks'.
end
define pcfun
@@ -202,11 +270,14 @@ Print current function.
end
define trt
-print ($.typed.type)
+eval "set $debug_arg = $%s", $argc ? "arg0" : ""
+print ($debug_arg.typed.type)
end
document trt
-Print TREE_TYPE of the tree node that is $
+GCC hook: trt [tree]
+Print TREE_TYPE of given tree node.
+See also 'help-gcc-hooks'.
end
define break-on-diagnostic
