diff options
Diffstat (limited to 'gcc/varasm.c')
| -rw-r--r-- | gcc/varasm.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/gcc/varasm.c b/gcc/varasm.c index 8efd98e..69ec26a 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -2107,7 +2107,31 @@ assemble_variable (tree decl, int top_level ATTRIBUTE_UNUSED, assemble_noswitch_variable (decl, name, sect, align); else { - switch_to_section (sect); + /* The following bit of code ensures that vtable_map + variables are not only in the comdat section, but that + each variable has its own unique comdat name. If this + code is removed, the variables end up in the same section + with a single comdat name. + + FIXME: resolve_unique_section needs to deal better with + decls with both DECL_SECTION_NAME and DECL_ONE_ONLY. Once + that is fixed, this if-else statement can be replaced with + a single call to "switch_to_section (sect)". */ + if (sect->named.name + && (strcmp (sect->named.name, ".vtable_map_vars") == 0)) + { +#if defined (OBJECT_FORMAT_ELF) + targetm.asm_out.named_section (sect->named.name, + sect->named.common.flags + | SECTION_LINKONCE, + DECL_NAME (decl)); + in_section = sect; +#else + switch_to_section (sect); +#endif + } + else + switch_to_section (sect); if (align > BITS_PER_UNIT) ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (align / BITS_PER_UNIT)); assemble_variable_contents (decl, name, dont_output_data); @@ -2120,6 +2144,23 @@ assemble_variable (tree decl, int top_level ATTRIBUTE_UNUSED, } } + +/* Given a function declaration (FN_DECL), this function assembles the + function into the .preinit_array section. */ + +void +assemble_vtv_preinit_initializer (tree fn_decl) +{ + section *sect; + unsigned flags = SECTION_WRITE; + rtx symbol = XEXP (DECL_RTL (fn_decl), 0); + + flags |= SECTION_NOTYPE; + sect = get_section (".preinit_array", flags, fn_decl); + switch_to_section (sect); + assemble_addr_to_section (symbol, sect); +} + /* Return 1 if type TYPE contains any pointers. */ static int @@ -6046,6 +6087,9 @@ default_section_type_flags (tree decl, const char *name, int reloc) if (decl && DECL_P (decl) && DECL_ONE_ONLY (decl)) flags |= SECTION_LINKONCE; + if (strcmp (name, ".vtable_map_vars") == 0) + flags |= SECTION_LINKONCE; + if (decl && TREE_CODE (decl) == VAR_DECL && DECL_THREAD_LOCAL_P (decl)) flags |= SECTION_TLS | SECTION_WRITE; |