diff options
Diffstat (limited to 'gcc/varasm.c')
| -rw-r--r-- | gcc/varasm.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/gcc/varasm.c b/gcc/varasm.c index b92da26..6c13f52 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -289,6 +289,10 @@ get_section (const char *name, unsigned int flags, tree decl, slot = section_htab->find_slot_with_hash (name, htab_hash_string (name), INSERT); flags |= SECTION_NAMED; + if (HAVE_GAS_SHF_GNU_RETAIN + && decl != nullptr + && DECL_PRESERVE_P (decl)) + flags |= SECTION_RETAIN; if (*slot == NULL) { sect = ggc_alloc<section> (); @@ -469,6 +473,7 @@ resolve_unique_section (tree decl, int reloc ATTRIBUTE_UNUSED, if (DECL_SECTION_NAME (decl) == NULL && targetm_common.have_named_sections && (flag_function_or_data_sections + || (HAVE_GAS_SHF_GNU_RETAIN && DECL_PRESERVE_P (decl)) || DECL_COMDAT_GROUP (decl))) { targetm.asm_out.unique_section (decl, reloc); @@ -1207,7 +1212,8 @@ get_variable_section (tree decl, bool prefer_noswitch_p) if (vnode) vnode->get_constructor (); - if (DECL_COMMON (decl)) + if (DECL_COMMON (decl) + && !(HAVE_GAS_SHF_GNU_RETAIN && DECL_PRESERVE_P (decl))) { /* If the decl has been given an explicit section name, or it resides in a non-generic address space, then it isn't common, and shouldn't @@ -6745,9 +6751,10 @@ default_elf_asm_named_section (const char *name, unsigned int flags, /* If we have already declared this section, we can use an abbreviated form to switch back to it -- unless this section is - part of a COMDAT groups, in which case GAS requires the full - declaration every time. */ + part of a COMDAT groups or with SHF_GNU_RETAIN, in which case GAS + requires the full declaration every time. */ if (!(HAVE_COMDAT_GROUP && (flags & SECTION_LINKONCE)) + && !(flags & SECTION_RETAIN) && (flags & SECTION_DECLARED)) { fprintf (asm_out_file, "\t.section\t%s\n", name); @@ -6780,6 +6787,8 @@ default_elf_asm_named_section (const char *name, unsigned int flags, *f++ = TLS_SECTION_ASM_FLAG; if (HAVE_COMDAT_GROUP && (flags & SECTION_LINKONCE)) *f++ = 'G'; + if (flags & SECTION_RETAIN) + *f++ = 'R'; #ifdef MACH_DEP_SECTION_ASM_FLAG if (flags & SECTION_MACH_DEP) *f++ = MACH_DEP_SECTION_ASM_FLAG; |