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Objective-C, NeXT: Adjust symbol marking to match host tools. 

Current host tools mark some additional symbols as 'no dead strip' and also
expose one additional group to the linker.  This does not affect older Darwin
versions or x86_64, but omitting these changes results in link errors for
aarch64.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>

gcc/ChangeLog:

	* config/darwin.cc (darwin_label_is_anonymous_local_objc_name): Make
	protocol class methods linker-visible.

gcc/objc/ChangeLog:

	* objc-next-runtime-abi-02.cc (next_runtime_abi_02_protocol_decl): Do
	not dead-strip the runtime meta-data symbols.
	(build_v2_classrefs_table): Likewise.
	(build_v2_protocol_list_address_table): Likewise.
This commit is contained in:
Iain Sandoe 2022-05-02 19:42:49 +01:00
parent 25389f3de4
commit ecd5727c0a
2 changed files with 6 additions and 2 deletions
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2
gcc/config/darwin.cc
View File

@ -1936,6 +1936,8 @@ darwin_label_is_anonymous_local_objc_name (const char *name)
}
else if (startswith ((const char *)p, "ClassMethods"))
return false;
else if (startswith ((const char *)p, "ClassProtocols"))
return false;
else if (startswith ((const char *)p, "Instance"))
{
if (p[8] == 'I' || p[8] == 'M')

6
gcc/objc/objc-next-runtime-abi-02.cc
View File

@ -1033,6 +1033,7 @@ next_runtime_abi_02_protocol_decl (tree p)
else
decl = start_var_decl (objc_v2_protocol_template, buf);
OBJCMETA (decl, objc_meta, meta_protocol);
DECL_PRESERVE_P (decl) = 1;
return decl;
}
@ -2115,8 +2116,8 @@ build_v2_classrefs_table (void)
expr = convert (objc_class_type, build_fold_addr_expr (expr));
}
/* The runtime wants this, even if it appears unused, so we must force the
output.
DECL_PRESERVE_P (decl) = 1; */
output. */
DECL_PRESERVE_P (decl) = 1;
finish_var_decl (decl, expr);
}
}
@ -2318,6 +2319,7 @@ build_v2_protocol_list_address_table (void)
expr = convert (objc_protocol_type, build_fold_addr_expr (ref->refdecl));
OBJCMETA (decl, objc_meta, meta_label_protocollist);
finish_var_decl (decl, expr);
DECL_PRESERVE_P (decl) = 1;
}
/* TODO: delete the vec. */