/* elfos.h -- operating system specific defines to be used when
targeting GCC for some generic ELF system
- Copyright (C) 1991, 1994, 1995, 1999, 2000, 2001
+ Copyright (C) 1991, 1994, 1995, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
Based on svr4.h contributed by Ron Guilmette (rfg@netcom.com).
#undef ASCII_DATA_ASM_OP
#define ASCII_DATA_ASM_OP "\t.ascii\t"
-/* Support const sections and the ctors and dtors sections for g++.
- Note that there appears to be two different ways to support const
- sections at the moment. You can either #define the symbol
- READONLY_DATA_SECTION (giving it some code which switches to the
- readonly data section) or else you can #define the symbols
- EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
- SELECT_RTX_SECTION. We do both here just to be on the safe side. */
+/* Support const sections and the ctors and dtors sections for g++. */
#define USE_CONST_SECTION 1
-
#define CONST_SECTION_ASM_OP "\t.section\t.rodata"
/* On svr4, we *do* have support for the .init and .fini sections, and we
}
#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
-
-#define UNIQUE_SECTION(DECL, RELOC) \
- do \
- { \
- int len; \
- int sec; \
- const char *name; \
- char *string; \
- const char *prefix; \
- static const char *const prefixes[4][2] = \
- { \
- { ".text.", ".gnu.linkonce.t." }, \
- { ".rodata.", ".gnu.linkonce.r." }, \
- { ".data.", ".gnu.linkonce.d." }, \
- { ".bss.", ".gnu.linkonce.b." } \
- }; \
- \
- if (TREE_CODE (DECL) == FUNCTION_DECL) \
- sec = 0; \
- else if (DECL_INITIAL (DECL) == 0 \
- || DECL_INITIAL (DECL) == error_mark_node) \
- sec = 3; \
- else if (DECL_READONLY_SECTION (DECL, RELOC)) \
- sec = 1; \
- else \
- sec = 2; \
- \
- name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
- /* Strip off any encoding in name. */ \
- STRIP_NAME_ENCODING (name, name); \
- prefix = prefixes[sec][DECL_ONE_ONLY(DECL)]; \
- len = strlen (name) + strlen (prefix); \
- string = alloca (len + 1); \
- \
- sprintf (string, "%s%s", prefix, name); \
- \
- DECL_SECTION_NAME (DECL) = build_string (len, string); \
- } \
- while (0)
/* Switch into a generic section. */
#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
#define SELECT_RTX_SECTION(MODE, RTX, ALIGN) \
mergeable_constant_section ((MODE), (ALIGN), 0)
-/* A C statement or statements to switch to the appropriate
- section for output of DECL. DECL is either a `VAR_DECL' node
- or a constant of some sort. RELOC indicates whether forming
- the initial value of DECL requires link-time relocations.
-
- To optimize loading of shared programs, define following subsections
- of data section by attaching:
-
- .rel
- Section with this string in name contains data that do have
- relocations, so they get grouped together and dynamic linker
- will visit fewer pages in memory.
- .ro
- Marks data read only otherwise. This is useful with prelinking
- as most of relocations won't be dynamically linked and thus
- stay read only.
- .local
- Marks data containing relocations only to local objects. These
- relocation will get fully resolved by prelinking.
- */
-
-#undef SELECT_SECTION
-#define SELECT_SECTION(DECL, RELOC, ALIGN) \
-{ \
- if (TREE_CODE (DECL) == STRING_CST) \
- { \
- if (! flag_writable_strings) \
- mergeable_string_section ((DECL), (ALIGN), 0); \
- else \
- data_section (); \
- } \
- else if (TREE_CODE (DECL) == VAR_DECL) \
- { \
- if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
- || !DECL_INITIAL (DECL) \
- || (DECL_INITIAL (DECL) != error_mark_node \
- && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
- { \
- if (flag_pic && ((RELOC) & 2)) \
- named_section (NULL_TREE, ".data.rel", RELOC); \
- else if (flag_pic && (RELOC)) \
- named_section (NULL_TREE, ".data.rel.local", RELOC);\
- else \
- data_section (); \
- } \
- else if (flag_pic && ((RELOC) & 2)) \
- named_section (NULL_TREE, ".data.rel.ro", RELOC); \
- else if (flag_pic && (RELOC)) \
- named_section (NULL_TREE, ".data.rel.ro.local", RELOC); \
- else if (flag_merge_constants < 2) \
- /* C and C++ don't allow different variables to share \
- the same location. -fmerge-all-constants allows \
- even that (at the expense of not conforming). */ \
- const_section (); \
- else if (TREE_CODE (DECL_INITIAL (DECL)) == STRING_CST) \
- mergeable_string_section (DECL_INITIAL (DECL), (ALIGN), \
- 0); \
- else \
- mergeable_constant_section (DECL_MODE (DECL), (ALIGN), \
- 0); \
- } \
- else if (TREE_CODE (DECL) == CONSTRUCTOR) \
- { \
- if ((flag_pic && RELOC) \
- || TREE_SIDE_EFFECTS (DECL) \
- || ! TREE_CONSTANT (DECL)) \
- data_section (); \
- else \
- const_section (); \
- } \
- else \
- const_section (); \
-}
+#undef TARGET_ASM_SELECT_SECTION
+#define TARGET_ASM_SELECT_SECTION default_elf_select_section
/* Define the strings used for the special svr4 .type and .size directives.
These strings generally do not vary from one system running svr4 to
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