#ifndef GCC_OUTPUT_H
#define GCC_OUTPUT_H
-/* Compute branch alignments based on frequency information in the CFG. */
-extern void compute_alignments (void);
-
/* Initialize data in final at the beginning of a compilation. */
extern void init_final (const char *);
get its actual length. Otherwise, get its maximum length. */
extern int get_attr_length (rtx);
+/* Obtain the current length of an insn. If branch shortening has been done,
+ get its actual length. Otherwise, get its minimum length. */
+extern int get_attr_min_length (rtx);
+
/* Make a pass over all insns and compute their actual lengths by shortening
any branches of variable length if possible. */
extern void shorten_branches (rtx);
/* Functions in varasm.c. */
-/* Tell assembler to switch to text section. */
-extern void text_section (void);
-
-/* Tell assembler to switch to unlikely-to-be-executed text section. */
-extern void unlikely_text_section (void);
-
-/* Tell assembler to switch to data section. */
-extern void data_section (void);
-
-/* Tell assembler to switch to read-only data section. This is normally
- the text section. */
-extern void readonly_data_section (void);
-
-/* Determine if we're in the text section. */
-extern int in_text_section (void);
-
-/* Determine if we're in the unlikely-to-be-executed text section. */
-extern int in_unlikely_text_section (void);
-
-#ifdef CTORS_SECTION_ASM_OP
-extern void ctors_section (void);
-#endif
-
-#ifdef DTORS_SECTION_ASM_OP
-extern void dtors_section (void);
-#endif
-
-#ifdef BSS_SECTION_ASM_OP
-extern void bss_section (void);
-#endif
-
-#ifdef INIT_SECTION_ASM_OP
-extern void init_section (void);
-#endif
-
-#ifdef FINI_SECTION_ASM_OP
-extern void fini_section (void);
-#endif
-
-#ifdef EXPORTS_SECTION_ASM_OP
-extern void exports_section (void);
-#endif
-
-#ifdef DRECTVE_SECTION_ASM_OP
-extern void drectve_section (void);
-#endif
-
-#ifdef SDATA_SECTION_ASM_OP
-extern void sdata_section (void);
-#endif
-
-/* Tell assembler to change to section NAME for DECL.
- If DECL is NULL, just switch to section NAME.
- If NAME is NULL, get the name from DECL.
- If RELOC is 1, the initializer for DECL contains relocs. */
-extern void named_section (tree, const char *, int);
-
-/* Tell assembler to switch to the section for function DECL. */
-extern void function_section (tree);
-
-/* Tell assembler to switch to the most recently used text section. */
-extern void current_function_section (tree);
-
-/* Tell assembler to switch to the section for string merging. */
-extern void mergeable_string_section (tree, unsigned HOST_WIDE_INT,
- unsigned int);
-
-/* Tell assembler to switch to the section for constant merging. */
-extern void mergeable_constant_section (enum machine_mode,
- unsigned HOST_WIDE_INT, unsigned int);
-
/* Declare DECL to be a weak symbol. */
extern void declare_weak (tree);
/* Merge weak status. */
extern rtx peephole (rtx);
#endif
-/* Write all the constants in the constant pool. */
-extern void output_constant_pool (const char *, tree);
+extern void output_shared_constant_pool (void);
+
+extern void output_object_blocks (void);
/* Return nonzero if VALUE is a valid constant-valued expression
for use in initializing a static variable; one that can be an
extern int size_directive_output;
extern tree last_assemble_variable_decl;
-enum in_section { no_section, in_text, in_unlikely_executed_text, in_data,
- in_named
-#ifdef BSS_SECTION_ASM_OP
- , in_bss
-#endif
-#ifdef CTORS_SECTION_ASM_OP
- , in_ctors
-#endif
-#ifdef DTORS_SECTION_ASM_OP
- , in_dtors
-#endif
-#ifdef READONLY_DATA_SECTION_ASM_OP
- , in_readonly_data
-#endif
-#ifdef EXTRA_SECTIONS
- , EXTRA_SECTIONS
-#endif
-};
-
-extern const char *last_text_section_name;
-extern enum in_section last_text_section;
extern bool first_function_block_is_cold;
/* Decide whether DECL needs to be in a writable section.
/* Default target function prologue and epilogue assembler output. */
extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT);
-/* Tell assembler to switch to the section for the exception table. */
-extern void default_exception_section (void);
-
-/* Tell assembler to switch to the section for the EH frames. */
-extern void named_section_eh_frame_section (void);
-extern void collect2_eh_frame_section (void);
-extern void default_eh_frame_section (void);
-
/* Default target hook that outputs nothing to a stream. */
extern void no_asm_to_stream (FILE *);
#define SECTION_OVERRIDE 0x20000 /* allow override of default flags */
#define SECTION_TLS 0x40000 /* contains thread-local storage */
#define SECTION_NOTYPE 0x80000 /* don't output @progbits */
-#define SECTION_MACH_DEP 0x100000 /* subsequent bits reserved for target */
+#define SECTION_DECLARED 0x100000 /* section has been used */
+#define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */
+#define SECTION_COMMON 0x800000 /* contains common data */
+#define SECTION_MACH_DEP 0x1000000 /* subsequent bits reserved for target */
+
+/* This SECTION_STYLE is used for unnamed sections that we can switch
+ to using a special assembler directive. */
+#define SECTION_UNNAMED 0x000000
+
+/* This SECTION_STYLE is used for named sections that we can switch
+ to using a general section directive. */
+#define SECTION_NAMED 0x200000
+
+/* This SECTION_STYLE is used for sections that we cannot switch to at
+ all. The choice of section is implied by the directive that we use
+ to declare the object. */
+#define SECTION_NOSWITCH 0x400000
/* A helper function for default_elf_select_section and
default_elf_unique_section. Categorizes the DECL. */
SECCAT_TBSS
};
+/* Information that is provided by all instances of the section type. */
+struct section_common GTY(()) {
+ /* The set of SECTION_* flags that apply to this section. */
+ unsigned int flags;
+};
+
+/* Information about a SECTION_NAMED section. */
+struct named_section GTY(()) {
+ struct section_common common;
+
+ /* The name of the section. */
+ const char *name;
+
+ /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the
+ section is associated. */
+ tree decl;
+};
+
+/* A callback that writes the assembly code for switching to an unnamed
+ section. The argument provides callback-specific data. */
+typedef void (*unnamed_section_callback) (const void *);
+
+/* Information about a SECTION_UNNAMED section. */
+struct unnamed_section GTY(()) {
+ struct section_common common;
+
+ /* The callback used to switch to the section, and the data that
+ should be passed to the callback. */
+ unnamed_section_callback GTY ((skip)) callback;
+ const void *GTY ((skip)) data;
+
+ /* The next entry in the chain of unnamed sections. */
+ section *next;
+};
+
+/* A callback that writes the assembly code for a decl in a
+ SECTION_NOSWITCH section. DECL is the decl that should be assembled
+ and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl
+ in bytes and ROUNDED is that size rounded up to the next
+ BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary.
+
+ Return true if the callback used DECL_ALIGN to set the object's
+ alignment. A false return value implies that we are relying
+ on the rounded size to align the decl. */
+typedef bool (*noswitch_section_callback) (tree decl, const char *name,
+ unsigned HOST_WIDE_INT size,
+ unsigned HOST_WIDE_INT rounded);
+
+/* Information about a SECTION_NOSWITCH section. */
+struct noswitch_section GTY(()) {
+ struct section_common common;
+
+ /* The callback used to assemble decls in this section. */
+ noswitch_section_callback GTY ((skip)) callback;
+};
+
+/* Information about a section, which may be named or unnamed. */
+union section GTY ((desc ("SECTION_STYLE (&(%h))")))
+{
+ struct section_common GTY ((skip)) common;
+ struct named_section GTY ((tag ("SECTION_NAMED"))) named;
+ struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
+ struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch;
+};
+
+/* Return the style of section SECT. */
+#define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK)
+
+struct object_block;
+
+/* Special well-known sections. */
+extern GTY(()) section *text_section;
+extern GTY(()) section *data_section;
+extern GTY(()) section *readonly_data_section;
+extern GTY(()) section *sdata_section;
+extern GTY(()) section *ctors_section;
+extern GTY(()) section *dtors_section;
+extern GTY(()) section *bss_section;
+extern GTY(()) section *sbss_section;
+extern GTY(()) section *exception_section;
+extern GTY(()) section *eh_frame_section;
+extern GTY(()) section *tls_comm_section;
+extern GTY(()) section *comm_section;
+extern GTY(()) section *lcomm_section;
+extern GTY(()) section *bss_noswitch_section;
+
+extern GTY(()) section *in_section;
+extern GTY(()) bool in_cold_section_p;
+
+extern section *get_unnamed_section (unsigned int, void (*) (const void *),
+ const void *);
+extern section *get_section (const char *, unsigned int, tree);
+extern section *get_named_section (tree, const char *, int);
+extern void place_block_symbol (rtx);
+extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT,
+ enum tls_model);
+extern section *mergeable_constant_section (enum machine_mode,
+ unsigned HOST_WIDE_INT,
+ unsigned int);
+extern section *function_section (tree);
+extern section *unlikely_text_section (void);
+extern section *current_function_section (void);
+
+extern bool unlikely_text_section_p (section *);
+extern void switch_to_section (section *);
+extern void output_section_asm_op (const void *);
-extern bool set_named_section_flags (const char *, unsigned int);
-#define named_section_flags(NAME, FLAGS) \
- named_section_real((NAME), (FLAGS), /*decl=*/NULL_TREE)
-extern void named_section_real (const char *, unsigned int, tree);
-extern bool named_section_first_declaration (const char *);
extern unsigned int default_section_type_flags (tree, const char *, int);
extern unsigned int default_section_type_flags_1 (tree, const char *, int, int);
+extern bool have_global_bss_p (void);
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_named_section_asm_out_constructor (rtx, int);
extern void default_ctor_section_asm_out_constructor (rtx, int);
-extern void default_select_section (tree, int, unsigned HOST_WIDE_INT);
-extern void default_elf_select_section (tree, int, unsigned HOST_WIDE_INT);
-extern void default_elf_select_section_1 (tree, int,
- unsigned HOST_WIDE_INT, int);
+extern section *default_select_section (tree, int,
+ unsigned HOST_WIDE_INT);
+extern section *default_elf_select_section (tree, int,
+ unsigned HOST_WIDE_INT);
+extern section *default_elf_select_section_1 (tree, int,
+ unsigned HOST_WIDE_INT,
+ int);
extern void default_unique_section (tree, int);
extern void default_unique_section_1 (tree, int, int);
-extern void default_function_rodata_section (tree);
-extern void default_no_function_rodata_section (tree);
-extern void default_select_rtx_section (enum machine_mode, rtx,
- unsigned HOST_WIDE_INT);
-extern void default_elf_select_rtx_section (enum machine_mode, rtx,
+extern section *default_function_rodata_section (tree);
+extern section *default_no_function_rodata_section (tree);
+extern section *default_select_rtx_section (enum machine_mode, rtx,
unsigned HOST_WIDE_INT);
+extern section *default_elf_select_rtx_section (enum machine_mode, rtx,
+ unsigned HOST_WIDE_INT);
extern void default_encode_section_info (tree, rtx, int);
extern const char *default_strip_name_encoding (const char *);
+extern void default_asm_output_anchor (rtx);
+extern bool default_use_anchors_for_symbol_p (rtx);
extern bool default_binds_local_p (tree);
extern bool default_binds_local_p_1 (tree, int);
extern void default_globalize_label (FILE *, const char *);
extern void default_emit_unwind_label (FILE *, tree, int, int);
+extern void default_emit_except_table_label (FILE *);
extern void default_internal_label (FILE *, const char *, unsigned long);
extern void default_file_start (void);
extern void file_end_indicate_exec_stack (void);
extern int default_address_cost (rtx);
-/* When performing hot/cold basic block partitioning, insert note in
- instruction stream indicating boundary between hot and cold sections. */
-extern void insert_section_boundary_note (void);
-
/* dbxout helper functions */
#if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO
OSDN Git Service
