https://gcc.gnu.org/g:11d379f5ff8a5d3ce3ec4bc2f66471cab15c9ff7
commit r12-10341-g11d379f5ff8a5d3ce3ec4bc2f66471cab15c9ff7
Author: Iain Sandoe <i...@sandoe.co.uk>
Date: Fri Sep 1 09:04:13 2023 +0100
Darwin: Place global inits in the correct section.
This handles placement of global initializers into __TEXT,__StaticInit as
used
by other platform toolchains.
Signed-off-by: Iain Sandoe <i...@sandoe.co.uk>
gcc/ChangeLog:
* config/darwin-sections.def (static_init_section): Add the
__TEXT,__StaticInit section.
* config/darwin.cc (darwin_function_section): Use the static init
section for global initializers, to match other platform toolchains.
(cherry picked from commit 68dc3e94fd6bd395a8b343533485616dff3fc796)
Diff:
---
gcc/config/darwin-sections.def | 2 ++
gcc/config/darwin.cc | 8 ++++++++
2 files changed, 10 insertions(+)
diff --git a/gcc/config/darwin-sections.def b/gcc/config/darwin-sections.def
index cdd5985cc36..af7bb404688 100644
--- a/gcc/config/darwin-sections.def
+++ b/gcc/config/darwin-sections.def
@@ -98,6 +98,8 @@ DEF_SECTION (mod_init_section, 0, ".mod_init_func", 0)
DEF_SECTION (mod_term_section, 0, ".mod_term_func", 0)
DEF_SECTION (constructor_section, 0, ".constructor", 0)
DEF_SECTION (destructor_section, 0, ".destructor", 0)
+DEF_SECTION (static_init_section, SECTION_CODE,
+ ".section\t__TEXT,__StaticInit,regular,pure_instructions", 0)
/* Objective-C ABI=0 (Original version) sections. */
DEF_SECTION (objc_class_section, 0, ".objc_class", 1)
diff --git a/gcc/config/darwin.cc b/gcc/config/darwin.cc
index 8aa10153cde..68a692dc74e 100644
--- a/gcc/config/darwin.cc
+++ b/gcc/config/darwin.cc
@@ -3879,6 +3879,14 @@ darwin_function_section (tree decl, enum node_frequency
freq,
if (decl && DECL_SECTION_NAME (decl) != NULL)
return get_named_section (decl, NULL, 0);
+ /* Intercept functions in global init; these are placed in separate sections.
+ FIXME: there should be some neater way to do this. */
+ if (DECL_NAME (decl)
+ && (startswith (IDENTIFIER_POINTER (DECL_NAME (decl)), "_GLOBAL__sub_I")
+ || startswith (IDENTIFIER_POINTER (DECL_NAME (decl)),
+ "__static_initialization_and_destruction")))
+ return darwin_sections[static_init_section];
+
/* We always put unlikely executed stuff in the cold section. */
if (freq == NODE_FREQUENCY_UNLIKELY_EXECUTED)
return (use_coal) ? darwin_sections[text_cold_coal_section]
