[Bug gdb/10640] New: GDB doesn't support DW_OP_call{2,4}

[Bug gdb/10640] New: GDB doesn't support DW_OP_call{2,4}

[jakub at redhat dot com]

In http://gcc.gnu.org/PR41343 we are discussing using DW_OP_call{2,4} to
reference DW_AT_location of other variables in current TU from DW_AT_location or
location lists, but unfortunately it doesn't seem to be supported by gdb.

-- 
           Summary: GDB doesn't support DW_OP_call{2,4}
           Product: gdb
           Version: 6.8
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: gdb
        AssignedTo: unassigned at sourceware dot org
        ReportedBy: jakub at redhat dot com
                CC: gdb-prs at sourceware dot org,jan dot kratochvil at
                    redhat dot com,tromey at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10640

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[Bug gdb/10640] GDB doesn't support DW_OP_call{2,4}

[jan dot kratochvil at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at sourceware dot|jan dot kratochvil at redhat
                   |org                         |dot com
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1


http://sourceware.org/bugzilla/show_bug.cgi?id=10640

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[Bug gdb/10640] GDB doesn't support DW_OP_call{2,4}

[jan dot kratochvil at redhat dot com]

------- Additional Comments From jan dot kratochvil at redhat dot com  2009-09-20 12:37 -------
Posted:
http://sourceware.org/ml/gdb-patches/2009-09/msg00641.html


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10640

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[Bug gdb/10640] GDB doesn't support DW_OP_call{2,4}

[jan dot kratochvil at redhat dot com]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2010-06-07 19:55 -------
Subject: Bug 10640

CVSROOT:	/cvs/src
Module name:	src
Changes by:	jkratoch@sourceware.org	2010-06-07 19:55:33

Modified files:
	gdb            : ChangeLog dwarf2-frame.c dwarf2expr.c 
	                 dwarf2expr.h dwarf2loc.c dwarf2loc.h 
	                 dwarf2read.c 
	gdb/testsuite  : ChangeLog 
Added files:
	gdb/testsuite/gdb.dwarf2: dw2-op-call.S dw2-op-call.exp 

Log message:
	gdb/
	Fix PR 10640.
	* dwarf2-frame.c (no_dwarf_call): New function.
	(execute_stack_op): Set CTX->DWARF_CALL.
	* dwarf2expr.c (execute_stack_op) <DW_OP_call2, DW_OP_call4>: New.
	* dwarf2expr.h (struct dwarf_expr_context) <dwarf_call>: New.
	(struct dwarf_expr_context) <get_subr>: Remove the #if0-ed field.
	* dwarf2loc.c (per_cu_dwarf_call, dwarf_expr_dwarf_call): New functions.
	(dwarf2_evaluate_loc_desc): Initialize CTX->DWARF_CALL.
	(needs_frame_dwarf_call): New function.
	(dwarf2_loc_desc_needs_frame): Initialize CTX->DWARF_CALL.
	* dwarf2read.c (follow_die_offset): Based on former follow_die_ref.
	Update the comment.  Move variables die, offset and error call to ...
	(follow_die_ref): ... a new function.
	(dwarf2_fetch_die_location_block): New function.
	* dwarf2loc.h (dwarf2_fetch_die_location_block): New prototype.
	
	gdb/testsuite/
	Test PR 10640.
	* gdb.dwarf2/dw2-op-call.exp, gdb.dwarf2/dw2-op-call.S: New.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.11884&r2=1.11885
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2-frame.c.diff?cvsroot=src&r1=1.111&r2=1.112
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2expr.c.diff?cvsroot=src&r1=1.45&r2=1.46
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2expr.h.diff?cvsroot=src&r1=1.24&r2=1.25
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2loc.c.diff?cvsroot=src&r1=1.87&r2=1.88
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2loc.h.diff?cvsroot=src&r1=1.16&r2=1.17
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2read.c.diff?cvsroot=src&r1=1.396&r2=1.397
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/ChangeLog.diff?cvsroot=src&r1=1.2320&r2=1.2321
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/dw2-op-call.S.diff?cvsroot=src&r1=NONE&r2=1.1
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/testsuite/gdb.dwarf2/dw2-op-call.exp.diff?cvsroot=src&r1=NONE&r2=1.1


------- Additional Comments From jan dot kratochvil at redhat dot com  2010-06-07 19:57 -------
Fixed.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://sourceware.org/bugzilla/show_bug.cgi?id=10640

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