From eb870e5e5ed4d5b784533d23afee637543e7dacc Mon Sep 17 00:00:00 2001 From: Iain Sandoe Date: Thu, 10 Oct 2019 19:04:33 +0000 Subject: [PATCH] [Objective-C, NeXT ABI] Identify V2 IVAR refs by metadata. For the NeXT 64b ABI, IVAR refs are supposed to be indirected for Mach-O PIC. Identify them so that we can act as needed. gcc/objc/ChangeLog: 2019-10-10 Iain Sandoe * objc-next-metadata-tags.h (OCTI_RT_META_IVAR_REF): New. (meta_ivar_ref): New. * objc-next-runtime-abi-02.c (next_runtime_abi_02_init_metadata_attributes): Create the IVAR ref metadata identifier. (ivar_offset_ref): Tag IVAR refs with specific metadata. From-SVN: r276847 --- gcc/objc/ChangeLog | 9 +++++++++ gcc/objc/objc-next-metadata-tags.h | 4 ++++ gcc/objc/objc-next-runtime-abi-02.c | 6 ++++-- 3 files changed, 17 insertions(+), 2 deletions(-) diff --git a/gcc/objc/ChangeLog b/gcc/objc/ChangeLog index 2b8f889..7919c3e 100644 --- a/gcc/objc/ChangeLog +++ b/gcc/objc/ChangeLog @@ -1,3 +1,12 @@ +2019-10-10 Iain Sandoe + + * objc-next-metadata-tags.h (OCTI_RT_META_IVAR_REF): New. + (meta_ivar_ref): New. + * objc-next-runtime-abi-02.c + (next_runtime_abi_02_init_metadata_attributes): Create the + IVAR ref metadata identifier. + (ivar_offset_ref): Tag IVAR refs with specific metadata. + 2019-06-05 Martin Sebor * objc-act.c (objc_build_setter_call): Adjust quoting and hyphenation. diff --git a/gcc/objc/objc-next-metadata-tags.h b/gcc/objc/objc-next-metadata-tags.h index 1822aa7..933f08c 100644 --- a/gcc/objc/objc-next-metadata-tags.h +++ b/gcc/objc/objc-next-metadata-tags.h @@ -74,6 +74,8 @@ enum objc_runtime_tree_index OCTI_RT_META_CONST_STR, + OCTI_RT_META_IVAR_REF, + OCTI_RT_META_MAX }; @@ -167,6 +169,8 @@ enum objc_runtime_tree_index #define meta_const_str objc_rt_trees[OCTI_RT_META_CONST_STR] +#define meta_ivar_ref objc_rt_trees[OCTI_RT_META_IVAR_REF] + #define OBJCMETA(DECL,VERS,KIND) \ if (VERS) \ DECL_ATTRIBUTES (DECL) = build_tree_list ((VERS), (KIND)); diff --git a/gcc/objc/objc-next-runtime-abi-02.c b/gcc/objc/objc-next-runtime-abi-02.c index aa1cbde..3e38b7d 100644 --- a/gcc/objc/objc-next-runtime-abi-02.c +++ b/gcc/objc/objc-next-runtime-abi-02.c @@ -345,6 +345,8 @@ next_runtime_abi_02_init_metadata_attributes (void) meta_ehtype = get_identifier ("V2_EHTY"); meta_const_str = get_identifier ("V2_CSTR"); + + meta_ivar_ref = get_identifier ("V2_IVRF"); } static void next_runtime_02_initialize (void) @@ -2795,8 +2797,8 @@ ivar_offset_ref (tree class_name, tree field_decl) else decl = create_hidden_decl (TREE_TYPE (size_zero_node), buf); - /* Make sure it ends up in an ObjC section. */ - OBJCMETA (decl, objc_meta, meta_base); + /* Identify so that we can indirect these where the ABI requires. */ + OBJCMETA (decl, objc_meta, meta_ivar_ref); e.decl = decl; e.offset = byte_position (field_decl); -- 2.7.4