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Add DW_CFA_AARCH64_negate_ra_state to dwarf2.def/h and dwarfnames.c

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A new vendor CFA DW_CFA_AARCH64_negate_ra_state was introduced for ARMv8.3-A
return address signing, it is multiplexing DW_CFA_GNU_window_save in CFA vendor
extension space.

  This patch adds necessary code to make it available to external, the GDB
patch (https://sourceware.org/ml/gdb-patches/2017-08/msg00215.html) is intended
to use it.

  A new DW_CFA_DUP for it is added in dwarf2.def.  The use of DW_CFA_DUP is to
avoid duplicated case value issue when included in libiberty/dwarfnames.

  Native x86 builds OK to make sure no macro expanding errors.

Committed on behalf of Jiong Wang.

    include/
	* dwarf2.def (DW_CFA_AARCH64_negate_ra_state): New DW_CFA_DUP.
	* dwarf2.h (DW_CFA_DUP): New define.

    libiberty/
	* dwarfnames.c (DW_CFA_DUP): New define.

From-SVN: r252037
This commit is contained in:
Jiong Wang 2017-09-12 16:39:59 +00:00 • committed by Wilco Dijkstra
parent 12263f13ac
commit ff971abe60
5 changed files with 14 additions and 0 deletions
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5
include/ChangeLog
View file

@ -1,3 +1,8 @@
2017-09-12 Jiong Wang <jiong.wang@arm.com>
* dwarf2.def (DW_CFA_AARCH64_negate_ra_state): New DW_CFA_DUP.
* dwarf2.h (DW_CFA_DUP): New define.
2017-08-21 Richard Biener <rguenther@suse.de>
* simple-object.h (simple_object_copy_lto_debug_sections): New

1
include/dwarf2.def
View file

@ -778,6 +778,7 @@ DW_CFA (DW_CFA_MIPS_advance_loc8, 0x1d)
/* GNU extensions.
NOTE: DW_CFA_GNU_window_save is multiplexed on Sparc and AArch64. */
DW_CFA (DW_CFA_GNU_window_save, 0x2d)
DW_CFA_DUP (DW_CFA_AARCH64_negate_ra_state, 0x2d)
DW_CFA (DW_CFA_GNU_args_size, 0x2e)
DW_CFA (DW_CFA_GNU_negative_offset_extended, 0x2f)

2
include/dwarf2.h
View file

@ -52,6 +52,7 @@
#define DW_ATE(name, value) , name = value
#define DW_ATE_DUP(name, value) , name = value
#define DW_CFA(name, value) , name = value
#define DW_CFA_DUP(name, value) , name = value
#define DW_IDX(name, value) , name = value
#define DW_IDX_DUP(name, value) , name = value
@ -104,6 +105,7 @@
#undef DW_ATE
#undef DW_ATE_DUP
#undef DW_CFA
#undef DW_CFA_DUP
#undef DW_IDX
#undef DW_IDX_DUP

4
libiberty/ChangeLog
View file

@ -1,3 +1,7 @@
2017-09-12 Jiong Wang <jiong.wang@arm.com>
* dwarfnames.c (DW_CFA_DUP): New define.
2017-09-01 Martin Liska <mliska@suse.cz>
* simple-object-elf.c (simple_object_elf_copy_lto_debug_sections):

2
libiberty/dwarfnames.c
View file

@ -75,6 +75,7 @@ Boston, MA 02110-1301, USA. */
#define DW_ATE(name, value) case name: return # name ;
#define DW_ATE_DUP(name, value)
#define DW_CFA(name, value) case name: return # name ;
#define DW_CFA_DUP(name, value)
#define DW_IDX(name, value) case name: return # name ;
#define DW_IDX_DUP(name, value)
@ -105,5 +106,6 @@ Boston, MA 02110-1301, USA. */
#undef DW_ATE
#undef DW_ATE_DUP
#undef DW_CFA
#undef DW_CFA_DUP
#undef DW_IDX
#undef DW_IDX_DUP