diff options
Diffstat (limited to 'gcc/output.h')
| -rw-r--r-- | gcc/output.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/gcc/output.h b/gcc/output.h index 221e4df..c0dfb5f 100644 --- a/gcc/output.h +++ b/gcc/output.h @@ -500,6 +500,44 @@ extern void no_asm_to_stream (FILE *); #define SECTION_NOTYPE 0x80000 /* don't output @progbits */ #define SECTION_MACH_DEP 0x100000 /* subsequent bits reserved for target */ +/* A helper function for default_elf_select_section and + default_elf_unique_section. Categorizes the DECL. */ + +enum section_category +{ + SECCAT_TEXT, + + SECCAT_RODATA, + SECCAT_RODATA_MERGE_STR, + SECCAT_RODATA_MERGE_STR_INIT, + SECCAT_RODATA_MERGE_CONST, + SECCAT_SRODATA, + + SECCAT_DATA, + + /* To optimize loading of shared programs, define following subsections + of data section: + _REL Contains data that has relocations, so they get grouped + together and dynamic linker will visit fewer pages in memory. + _RO Contains data that is otherwise read-only. This is useful + with prelinking as most relocations won't be dynamically + linked and thus stay read only. + _LOCAL Marks data containing relocations only to local objects. + These relocations will get fully resolved by prelinking. */ + SECCAT_DATA_REL, + SECCAT_DATA_REL_LOCAL, + SECCAT_DATA_REL_RO, + SECCAT_DATA_REL_RO_LOCAL, + + SECCAT_SDATA, + SECCAT_TDATA, + + SECCAT_BSS, + SECCAT_SBSS, + SECCAT_TBSS +}; + + extern bool set_named_section_flags (const char *, unsigned int); #define named_section_flags(NAME, FLAGS) \ named_section_real((NAME), (FLAGS), /*decl=*/NULL_TREE) @@ -510,6 +548,7 @@ extern unsigned int default_section_type_flags_1 (tree, const char *, int, int); extern void default_no_named_section (const char *, unsigned int, tree); extern void default_elf_asm_named_section (const char *, unsigned int, tree); +extern enum section_category categorize_decl_for_section (tree, int, int); extern void default_coff_asm_named_section (const char *, unsigned int, tree); extern void default_pe_asm_named_section (const char *, unsigned int, tree); |