/* Declarations for insn-output.c. These functions are defined in recog.c,
final.c, and varasm.c.
- Copyright (C) 1987, 1991, 1994, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+ Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#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);
subreg of. */
extern rtx alter_subreg (rtx *);
+/* Print an operand using machine-dependent assembler syntax. */
+extern void output_operand (rtx, int);
+
/* Report inconsistency between the assembler template and the operands.
In an `asm', it's the user's fault; otherwise, the compiler's fault. */
extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1;
Defined in final.c. */
extern int label_to_alignment (rtx);
+/* Find the alignment maximum skip associated with a CODE_LABEL.
+ Defined in final.c. */
+extern int label_to_max_skip (rtx);
+
/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */
extern void output_asm_label (rtx);
+/* Marks SYMBOL_REFs in x as referenced through use of assemble_external. */
+extern void mark_symbol_refs_as_used (rtx);
+
/* Print a memory reference operand for address X
using machine-dependent assembler syntax. */
extern void output_address (rtx);
#define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
#endif
+extern void fprint_whex (FILE *, unsigned HOST_WIDE_INT);
+extern void fprint_ul (FILE *, unsigned long);
+extern int sprint_ul (char *, unsigned long);
+
extern void asm_fprintf (FILE *file, const char *p, ...)
ATTRIBUTE_ASM_FPRINTF(2, 3);
/* Locate the proper template for the given insn-code. */
extern const char *get_insn_template (int, rtx);
-/* Functions in flow.c */
-extern int regno_clobbered_at_setjmp (int);
-
/* 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. */
/* Emit any pending weak declarations. */
extern void weak_finish (void);
+/* Return the default TLS model for a given variable. */
+extern enum tls_model decl_default_tls_model (const_tree);
+
/* Decode an `asm' spec for a declaration as a register name.
Return the register number, or -1 if nothing specified,
or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
Prefixes such as % are optional. */
extern int decode_reg_name (const char *);
-/* Make the rtl for variable VAR be volatile.
- Use this only for static variables. */
-extern void make_var_volatile (tree);
+/* Similar to decode_reg_name, but takes an extra parameter that is a
+ pointer to the number of (internal) registers described by the
+ external name. */
+extern int decode_reg_name_and_count (const char *, int *);
extern void assemble_alias (tree, tree);
initial value (that will be done by the caller). */
extern void assemble_variable (tree, int, int, int);
-/* Output something to declare an external symbol to the assembler.
- (Most assemblers don't need this, so we normally output nothing.)
- Do nothing if DECL is not external. */
+/* Compute the alignment of variable specified by DECL.
+ DONT_OUTPUT_DATA is from assemble_variable. */
+extern void align_variable (tree decl, bool dont_output_data);
+
+/* Queue for outputting something to declare an external symbol to the
+ assembler. (Most assemblers don't need this, so we normally output
+ nothing.) Do nothing if DECL is not external. */
extern void assemble_external (tree);
/* Assemble code to leave SIZE bytes of zeros. */
extern void assemble_external_libcall (rtx);
/* Assemble a label named NAME. */
-extern void assemble_label (const char *);
+extern void assemble_label (FILE *, const char *);
/* Output to FILE (an assembly file) a reference to NAME. If NAME
starts with a *, the rest of NAME is output verbatim. Otherwise
be outputable. */
extern bool assemble_integer (rtx, unsigned, unsigned, int);
+/* Return section for TEXT_SECITON_NAME if DECL or DECL_SECTION_NAME (DECL)
+ is NULL. */
+extern section *get_named_text_section (tree, const char *, const char *);
+
/* An interface to assemble_integer for the common case in which a value is
fully aligned and must be printed. VALUE is the value of the integer
object and SIZE is the number of bytes it contains. */
extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned);
#endif
+/* Write the address of the entity given by SYMBOL to SEC. */
+extern void assemble_addr_to_section (rtx, section *);
+
/* Return the size of the constant pool. */
extern int get_pool_size (void);
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);
+
+extern void output_quoted_string (FILE *, const char *);
+
+/* Whether a constructor CTOR is a valid static constant initializer if all
+ its elements are. This used to be internal to initializer_constant_valid_p
+ and has been exposed to let other functions like categorize_ctor_elements
+ evaluate the property while walking a constructor for other purposes. */
+
+extern bool constructor_static_from_elts_p (const_tree);
/* Return nonzero if VALUE is a valid constant-valued expression
for use in initializing a static variable; one that can be an
arithmetic-combinations of integers. */
extern tree initializer_constant_valid_p (tree, tree);
+/* Return true if VALUE is a valid constant-valued expression
+ for use in initializing a static bit-field; one that can be
+ an element of a "constant" initializer. */
+extern bool initializer_constant_valid_for_bitfield_p (tree);
+
/* Output assembler code for constant EXP to FILE, with no label.
This includes the pseudo-op such as ".int" or ".byte", and a newline.
Assumes output_addressed_constants has been done on EXP already.
/* Nonzero if function being compiled doesn't modify the stack pointer
(ignoring the prologue and epilogue). This is only valid after
- life_analysis has run. */
+ pass_stack_ptr_mod has run. */
extern int current_function_sp_is_unchanging;
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 char *unlikely_section_label;
-extern char *hot_section_label;
-extern char *hot_section_end_label;
-extern char *cold_section_end_label;
-extern char *unlikely_text_section_name;
-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.
RELOC is the same as for SELECT_SECTION. */
-extern bool decl_readonly_section (tree, int);
-extern bool decl_readonly_section_1 (tree, int, int);
+extern bool decl_readonly_section (const_tree, int);
/* This can be used to compute RELOC for the function above, when
given a constant expression. */
/* 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 function switched text sections. */
+extern void default_function_switched_text_sections (FILE *, tree, bool);
/* 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_RELRO 0x1000000 /* data is readonly after relocation processing */
+#define SECTION_EXCLUDE 0x2000000 /* discarded by the linker */
+#define SECTION_MACH_DEP 0x4000000 /* 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. */
+
+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
+};
+
+/* Information that is provided by all instances of the section type. */
+struct GTY(()) section_common {
+ /* The set of SECTION_* flags that apply to this section. */
+ unsigned int flags;
+};
+
+/* Information about a SECTION_NAMED section. */
+struct GTY(()) named_section {
+ 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 GTY(()) unnamed_section {
+ 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 GTY(()) noswitch_section {
+ 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 GTY ((desc ("SECTION_STYLE (&(%h))"))) section {
+ 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 section *get_variable_section (tree, bool);
+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);
+
+/* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if
+ not) section for PRIORITY. */
+extern section *get_cdtor_priority_section (int, bool);
+
+extern bool unlikely_text_section_p (section *);
+extern void switch_to_section (section *);
+extern void output_section_asm_op (const void *);
+
+extern void record_tm_clone_pair (tree, tree);
+extern void finish_tm_clone_pairs (void);
+extern tree get_tm_clone_pair (tree);
+
+extern void default_asm_output_source_filename (FILE *, const char *);
+extern void output_file_directive (FILE *, const char *);
-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 (const_tree, 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);
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 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_clone_table_section (void);
+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 bool default_binds_local_p (tree);
-extern bool default_binds_local_p_1 (tree, int);
+extern void default_asm_output_anchor (rtx);
+extern bool default_use_anchors_for_symbol_p (const_rtx);
+extern bool default_binds_local_p (const_tree);
+extern bool default_binds_local_p_1 (const_tree, int);
extern void default_globalize_label (FILE *, const char *);
+extern void default_globalize_decl_name (FILE *, tree);
extern void default_emit_unwind_label (FILE *, tree, int, int);
+extern void default_emit_except_table_label (FILE *);
+extern void default_generate_internal_label (char *, const char *,
+ unsigned long);
extern void default_internal_label (FILE *, const char *, unsigned long);
+extern void default_asm_declare_constant_name (FILE *, const char *,
+ const_tree, HOST_WIDE_INT);
extern void default_file_start (void);
extern void file_end_indicate_exec_stack (void);
-extern bool default_valid_pointer_mode (enum machine_mode);
+extern void file_end_indicate_split_stack (void);
+
+extern void default_elf_asm_output_external (FILE *file, tree,
+ const char *);
+extern void default_elf_asm_output_limited_string (FILE *, const char *);
+extern void default_elf_asm_output_ascii (FILE *, const char *, unsigned int);
+extern void default_elf_internal_label (FILE *, const char *, unsigned long);
+
+extern void default_elf_init_array_asm_out_constructor (rtx, int);
+extern void default_elf_fini_array_asm_out_destructor (rtx, int);
+extern int maybe_assemble_visibility (tree);
-extern int default_address_cost (rtx);
+extern int default_address_cost (rtx, bool);
-/* 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);
+/* Output stack usage information. */
+extern void output_stack_usage (void);
/* dbxout helper functions */
#if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO
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