/* 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 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004, 2005, 2006, 2007, 2008, 2009 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/>. */
-/* Compute branch alignments based on frequency information in the CFG. */
-extern void compute_alignments PARAMS ((void));
+#ifndef GCC_OUTPUT_H
+#define GCC_OUTPUT_H
/* Initialize data in final at the beginning of a compilation. */
-extern void init_final PARAMS ((const char *));
-
-/* Called at end of source file,
- to output the block-profiling table for this entire compilation. */
-extern void end_final PARAMS ((const char *));
+extern void init_final (const char *);
/* Enable APP processing of subsequent output.
Used before the output from an `asm' statement. */
-extern void app_enable PARAMS ((void));
+extern void app_enable (void);
/* Disable APP processing of subsequent output.
Called from varasm.c before most kinds of output. */
-extern void app_disable PARAMS ((void));
+extern void app_disable (void);
/* Return the number of slots filled in the current
delayed branch sequence (we don't count the insn needing the
delay slot). Zero if not in a delayed branch sequence. */
-extern int dbr_sequence_length PARAMS ((void));
+extern int dbr_sequence_length (void);
/* Indicate that branch shortening hasn't yet been done. */
-extern void init_insn_lengths PARAMS ((void));
+extern void init_insn_lengths (void);
-#ifdef RTX_CODE
/* Obtain the current length of an insn. If branch shortening has been done,
get its actual length. Otherwise, get its maximum length. */
-extern int get_attr_length PARAMS ((rtx));
+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 PARAMS ((rtx));
+extern void shorten_branches (rtx);
/* Output assembler code for the start of a function,
and initialize some of the variables in this file
for the new function. The label for the function and associated
assembler pseudo-ops have already been output in
`assemble_start_function'. */
-extern void final_start_function PARAMS ((rtx, FILE *, int));
+extern void final_start_function (rtx, FILE *, int);
/* Output assembler code for the end of a function.
For clarity, args are same as those of `final_start_function'
even though not all of them are needed. */
-extern void final_end_function PARAMS ((void));
+extern void final_end_function (void);
/* Output assembler code for some insns: all or part of a function. */
-extern void final PARAMS ((rtx, FILE *, int, int));
+extern void final (rtx, FILE *, int);
/* The final scan for one insn, INSN. Args are same as in `final', except
that INSN is the insn being scanned. Value returned is the next insn to
be scanned. */
-extern rtx final_scan_insn PARAMS ((rtx, FILE *, int, int, int));
+extern rtx final_scan_insn (rtx, FILE *, int, int, int *);
/* Replace a SUBREG with a REG or a MEM, based on the thing it is a
subreg of. */
-extern rtx alter_subreg PARAMS ((rtx *));
+extern rtx alter_subreg (rtx *);
/* 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 PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1;
+extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1;
/* Output a string of assembler code, substituting insn operands.
Defined in final.c. */
-extern void output_asm_insn PARAMS ((const char *, rtx *));
+extern void output_asm_insn (const char *, rtx *);
/* Compute a worst-case reference address of a branch so that it
can be safely used in the presence of aligned labels.
Defined in final.c. */
-extern int insn_current_reference_address PARAMS ((rtx));
+extern int insn_current_reference_address (rtx);
/* Find the alignment associated with a CODE_LABEL.
Defined in final.c. */
-extern int label_to_alignment PARAMS ((rtx));
+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 PARAMS ((rtx));
+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 PARAMS ((rtx));
+extern void output_address (rtx);
/* Print an integer constant expression in assembler syntax.
Addition and subtraction are the only arithmetic
that may appear in these expressions. */
-extern void output_addr_const PARAMS ((FILE *, rtx));
+extern void output_addr_const (FILE *, rtx);
/* Output a string of assembler code, substituting numbers, strings
and fixed syntactic prefixes. */
-extern void asm_fprintf PARAMS ((FILE *file, const char *p, ...));
+#if GCC_VERSION >= 3004
+#define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m)
+/* This is a magic identifier which allows GCC to figure out the type
+ of HOST_WIDE_INT for %wd specifier checks. You must issue this
+ typedef before using the __asm_fprintf__ format attribute. */
+typedef HOST_WIDE_INT __gcc_host_wide_int__;
+#else
+#define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m)
+#endif
+
+extern void asm_fprintf (FILE *file, const char *p, ...)
+ ATTRIBUTE_ASM_FPRINTF(2, 3);
/* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single
words. */
-extern void split_double PARAMS ((rtx, rtx *, rtx *));
+extern void split_double (rtx, rtx *, rtx *);
/* Return nonzero if this function has no function calls. */
-extern int leaf_function_p PARAMS ((void));
+extern int leaf_function_p (void);
-/* Return 1 if branch is an forward branch.
+/* Return 1 if branch is a forward branch.
Uses insn_shuid array, so it works only in the final pass. May be used by
output templates to add branch prediction hints, for example. */
-extern int final_forward_branch_p PARAMS ((rtx));
+extern int final_forward_branch_p (rtx);
/* Return 1 if this function uses only the registers that can be
safely renumbered. */
-extern int only_leaf_regs_used PARAMS ((void));
+extern int only_leaf_regs_used (void);
/* Scan IN_RTX and its subexpressions, and renumber all regs into those
available in leaf functions. */
-extern void leaf_renumber_regs_insn PARAMS ((rtx));
+extern void leaf_renumber_regs_insn (rtx);
/* Locate the proper template for the given insn-code. */
-extern const char *get_insn_template PARAMS ((int, rtx));
-
-/* Add function NAME to the weak symbols list. VALUE is a weak alias
- associated with NAME. */
-extern int add_weak PARAMS ((tree, const char *, const char *));
-
-/* Functions in flow.c */
-extern void allocate_for_life_analysis PARAMS ((void));
-extern int regno_uninitialized PARAMS ((unsigned int));
-extern int regno_clobbered_at_setjmp PARAMS ((int));
-extern void find_basic_blocks PARAMS ((rtx, int, FILE *));
-extern bool cleanup_cfg PARAMS ((int));
-extern bool delete_unreachable_blocks PARAMS ((void));
-extern void check_function_return_warnings PARAMS ((void));
-#endif
+extern const char *get_insn_template (int, rtx);
/* Functions in varasm.c. */
-/* Tell assembler to switch to text section. */
-extern void text_section PARAMS ((void));
-
-/* Tell assembler to switch to data section. */
-extern void data_section PARAMS ((void));
-
-/* Tell assembler to make sure its in the data section. */
-extern void force_data_section PARAMS ((void));
-
-/* Tell assembler to switch to read-only data section. This is normally
- the text section. */
-extern void readonly_data_section PARAMS ((void));
-
-/* Determine if we're in the text section. */
-extern int in_text_section PARAMS ((void));
-
-#ifdef CTORS_SECTION_ASM_OP
-extern void ctors_section PARAMS ((void));
-#endif
-
-#ifdef DTORS_SECTION_ASM_OP
-extern void dtors_section PARAMS ((void));
-#endif
-
-#ifdef BSS_SECTION_ASM_OP
-extern void bss_section PARAMS ((void));
-#endif
-
-#ifdef CONST_SECTION_ASM_OP
-extern void const_section PARAMS ((void));
-#endif
-
-#ifdef INIT_SECTION_ASM_OP
-extern void init_section PARAMS ((void));
-#endif
-
-#ifdef FINI_SECTION_ASM_OP
-extern void fini_section PARAMS ((void));
-#endif
-
-#ifdef EXPORTS_SECTION_ASM_OP
-extern void exports_section PARAMS ((void));
-#endif
-
-#ifdef TDESC_SECTION_ASM_OP
-extern void tdesc_section PARAMS ((void));
-#endif
-
-#ifdef DRECTVE_SECTION_ASM_OP
-extern void drectve_section PARAMS ((void));
-#endif
-
-#ifdef SDATA_SECTION_ASM_OP
-extern void sdata_section PARAMS ((void));
-#endif
-
-#ifdef RDATA_SECTION_ASM_OP
-extern void rdata_section PARAMS ((void));
-#endif
-
-#ifdef TREE_CODE
-/* 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 PARAMS ((tree, const char *, int));
-
-/* Tell assembler to switch to the section for function DECL. */
-extern void function_section PARAMS ((tree));
-
-/* Tell assembler to switch to the section for string merging. */
-extern void mergeable_string_section PARAMS ((tree, unsigned HOST_WIDE_INT,
- unsigned int));
-
-/* Tell assembler to switch to the section for constant merging. */
-extern void mergeable_constant_section PARAMS ((enum machine_mode,
- unsigned HOST_WIDE_INT,
- unsigned int));
-
/* Declare DECL to be a weak symbol. */
-extern void declare_weak PARAMS ((tree));
+extern void declare_weak (tree);
/* Merge weak status. */
-extern void merge_weak PARAMS ((tree, tree));
-#endif /* TREE_CODE */
+extern void merge_weak (tree, tree);
/* Emit any pending weak declarations. */
-extern void weak_finish PARAMS ((void));
+extern void weak_finish (void);
+
+/* Emit any pending emutls declarations and initializations. */
+extern void emutls_finish (void);
/* Decode an `asm' spec for a declaration as a register name.
Return the register number, or -1 if nothing specified,
or -4 if ASMSPEC is `memory' and is not recognized.
Accept an exact spelling or a decimal number.
Prefixes such as % are optional. */
-extern int decode_reg_name PARAMS ((const char *));
-
-#ifdef TREE_CODE
-/* Make the rtl for variable VAR be volatile.
- Use this only for static variables. */
-extern void make_var_volatile PARAMS ((tree));
+extern int decode_reg_name (const char *);
-/* Output alignment directive to align for constant expression EXP. */
-extern void assemble_constant_align PARAMS ((tree));
+extern void assemble_alias (tree, tree);
-extern void assemble_alias PARAMS ((tree, tree));
-
-extern void assemble_visibility PARAMS ((tree, const char *));
+extern void default_assemble_visibility (tree, int);
/* Output a string of literal assembler code
for an `asm' keyword used between functions. */
-extern void assemble_asm PARAMS ((tree));
+extern void assemble_asm (tree);
/* Output assembler code for the constant pool of a function and associated
with defining the name of the function. DECL describes the function.
NAME is the function's name. For the constant pool, we use the current
constant pool data. */
-extern void assemble_start_function PARAMS ((tree, const char *));
+extern void assemble_start_function (tree, const char *);
/* Output assembler code associated with defining the size of the
function. DECL describes the function. NAME is the function's name. */
-extern void assemble_end_function PARAMS ((tree, const char *));
+extern void assemble_end_function (tree, const char *);
/* Assemble everything that is needed for a variable or function declaration.
Not used for automatic variables, and not used for function definitions.
to define things that have had only tentative definitions.
DONT_OUTPUT_DATA if nonzero means don't actually output the
initial value (that will be done by the caller). */
-extern void assemble_variable PARAMS ((tree, int, int, int));
+extern void assemble_variable (tree, int, int, int);
+
+/* 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);
-/* 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. */
-extern void assemble_external PARAMS ((tree));
-#endif /* TREE_CODE */
+/* 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_zeros PARAMS ((int));
+extern void assemble_zeros (unsigned HOST_WIDE_INT);
/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */
-extern void assemble_align PARAMS ((int));
-extern void assemble_eh_align PARAMS ((int));
+extern void assemble_align (int);
/* Assemble a string constant with the specified C string as contents. */
-extern void assemble_string PARAMS ((const char *, int));
+extern void assemble_string (const char *, int);
-#ifdef RTX_CODE
/* Similar, for calling a library function FUN. */
-extern void assemble_external_libcall PARAMS ((rtx));
-#endif
-
-/* Declare the label NAME global. */
-extern void assemble_global PARAMS ((const char *));
+extern void assemble_external_libcall (rtx);
/* Assemble a label named NAME. */
-extern void assemble_label PARAMS ((const char *));
-extern void assemble_eh_label PARAMS ((const char *));
+extern void assemble_label (const char *);
-/* Output to FILE a reference to the assembler name of a C-level name NAME.
- If NAME starts with a *, the rest of NAME is output verbatim.
- Otherwise NAME is transformed in an implementation-defined way
- (usually by the addition of an underscore).
- Many macros in the tm file are defined to call this function. */
-extern void assemble_name PARAMS ((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
+ NAME is transformed in a target-specific way (usually by the
+ addition of an underscore). */
+extern void assemble_name_raw (FILE *, const char *);
+
+/* Like assemble_name_raw, but should be used when NAME might refer to
+ an entity that is also represented as a tree (like a function or
+ variable). If NAME does refer to such an entity, that entity will
+ be marked as referenced. */
+extern void assemble_name (FILE *, const char *);
/* Return the assembler directive for creating a given kind of integer
object. SIZE is the number of bytes in the object and ALIGNED_P
The returned string should be printed at the start of a new line and
be followed immediately by the object's initial value. */
-extern const char *integer_asm_op PARAMS ((int, int));
+extern const char *integer_asm_op (int, int);
-#ifdef RTX_CODE
/* Use directive OP to assemble an integer object X. Print OP at the
start of the line, followed immediately by the value of X. */
-extern void assemble_integer_with_op PARAMS ((const char *, rtx));
+extern void assemble_integer_with_op (const char *, rtx);
/* The default implementation of the asm_out.integer target hook. */
-extern bool default_assemble_integer PARAMS ((rtx, unsigned int, int));
+extern bool default_assemble_integer (rtx, unsigned int, int);
/* Assemble the integer constant X into an object of SIZE bytes. ALIGN is
the alignment of the integer in bits. Return 1 if we were able to output
- the constant, otherwise 0. If FORCE is non-zero, abort if we can't output
- the constant. */
-extern bool assemble_integer PARAMS ((rtx, unsigned, unsigned, int));
+ the constant, otherwise 0. If FORCE is nonzero the constant must
+ be outputable. */
+extern bool assemble_integer (rtx, unsigned, unsigned, int);
/* 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
#define assemble_aligned_integer(SIZE, VALUE) \
assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
-#ifdef REAL_VALUE_TYPE
+#ifdef REAL_VALUE_TYPE_SIZE
/* Assemble the floating-point constant D into an object of size MODE. */
-extern void assemble_real PARAMS ((REAL_VALUE_TYPE,
- enum machine_mode,
- unsigned));
-#endif
+extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned);
#endif
-/* Start deferring output of subconstants. */
-extern void defer_addressed_constants PARAMS ((void));
-
-/* Stop deferring output of subconstants,
- and output now all those that have been deferred. */
-extern void output_deferred_addressed_constants PARAMS ((void));
+/* 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 PARAMS ((void));
+extern int get_pool_size (void);
#ifdef HAVE_peephole
-extern rtx peephole PARAMS ((rtx));
+extern rtx peephole (rtx);
#endif
-#ifdef TREE_CODE
-/* Write all the constants in the constant pool. */
-extern void output_constant_pool PARAMS ((const char *, tree));
+extern void output_shared_constant_pool (void);
+
+extern void output_object_blocks (void);
+
+/* 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
We assume that VALUE has been folded as much as possible;
therefore, we do not need to check for such things as
arithmetic-combinations of integers. */
-extern tree initializer_constant_valid_p PARAMS ((tree, tree));
+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.
with zeros if necessary. SIZE must always be specified.
ALIGN is the alignment in bits that may be assumed for the data. */
-extern void output_constant PARAMS ((tree, HOST_WIDE_INT,
- unsigned int));
-#endif
+extern void output_constant (tree, unsigned HOST_WIDE_INT, unsigned int);
-#ifdef RTX_CODE
/* When outputting delayed branch sequences, this rtx holds the
sequence being output. It is null when no delayed branch
sequence is being output, so it can be used as a test in the
This variable is defined in final.c. */
extern rtx final_sequence;
-#endif
/* The line number of the beginning of the current function. Various
md code needs this so that it can output relative linenumbers. */
extern int current_function_is_leaf;
-/* Nonzero if function being compiled doesn't contain any instructions
- that can throw an exception. This is set prior to final. */
-
-extern int current_function_nothrow;
-
/* 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;
/* Default file in which to dump debug output. */
#ifdef BUFSIZ
-extern FILE *rtl_dump_file;
+extern FILE *dump_file;
#endif
/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */
-extern struct rtx_def *current_insn_predicate;
+extern rtx current_insn_predicate;
/* Last insn processed by final_scan_insn. */
-extern struct rtx_def *current_output_insn;
+extern rtx current_output_insn;
/* Nonzero while outputting an `asm' with operands.
- This means that inconsistencies are the user's fault, so don't abort.
+ This means that inconsistencies are the user's fault, so don't die.
The precise value is the insn being output, to pass to error_for_asm. */
extern rtx this_is_asm_operands;
-/* Decide whether DECL needs to be in a writable section. RELOC is the same
- as for SELECT_SECTION. */
+/* Carry information from ASM_DECLARE_OBJECT_NAME
+ to ASM_FINISH_DECLARE_OBJECT. */
+extern int size_directive_output;
+extern tree last_assemble_variable_decl;
+
+extern bool first_function_block_is_cold;
-#define DECL_READONLY_SECTION(DECL,RELOC) \
- (TREE_READONLY (DECL) \
- && ! TREE_THIS_VOLATILE (DECL) \
- && DECL_INITIAL (DECL) \
- && (DECL_INITIAL (DECL) == error_mark_node \
- || TREE_CONSTANT (DECL_INITIAL (DECL))) \
- && ! (RELOC && (flag_pic || DECL_ONE_ONLY (DECL))))
+/* Decide whether DECL needs to be in a writable section.
+ RELOC is the same as for SELECT_SECTION. */
+extern bool decl_readonly_section (const_tree, int);
+
+/* This can be used to compute RELOC for the function above, when
+ given a constant expression. */
+extern int compute_reloc_for_constant (tree);
/* User label prefix in effect for this compilation. */
extern const char *user_label_prefix;
/* Default target function prologue and epilogue assembler output. */
-extern void default_function_pro_epilogue PARAMS ((FILE *, HOST_WIDE_INT));
-
-/* Tell assembler to switch to the section for the exception table. */
-extern void default_exception_section PARAMS ((void));
-
-/* Tell assembler to switch to the section for the EH frames. */
-extern void default_eh_frame_section PARAMS ((void));
+extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT);
/* Default target hook that outputs nothing to a stream. */
-extern void no_asm_to_stream PARAMS ((FILE *));
+extern void no_asm_to_stream (FILE *);
-/* Flags controling properties of a section. */
+/* Flags controlling properties of a section. */
#define SECTION_ENTSIZE 0x000ff /* entity size in section */
#define SECTION_CODE 0x00100 /* contains code */
#define SECTION_WRITE 0x00200 /* data is writable */
#define SECTION_STRINGS 0x10000 /* contains zero terminated strings without
embedded zeros */
#define SECTION_OVERRIDE 0x20000 /* allow override of default flags */
-#define SECTION_MACH_DEP 0x40000 /* subsequent bits reserved for target */
-
-extern unsigned int get_named_section_flags PARAMS ((const char *));
-extern bool set_named_section_flags PARAMS ((const char *, unsigned int));
-extern void named_section_flags PARAMS ((const char *, unsigned int));
-extern bool named_section_first_declaration PARAMS((const char *));
-
-union tree_node;
-extern unsigned int default_section_type_flags PARAMS ((union tree_node *,
- const char *, int));
-
-extern void default_no_named_section PARAMS ((const char *, unsigned int));
-extern void default_elf_asm_named_section PARAMS ((const char *, unsigned int));
-extern void default_coff_asm_named_section PARAMS ((const char *,
- unsigned int));
-extern void default_pe_asm_named_section PARAMS ((const char *, unsigned int));
-
-extern void default_stabs_asm_out_destructor PARAMS ((struct rtx_def *, int));
-extern void default_named_section_asm_out_destructor PARAMS ((struct rtx_def *,
- int));
-extern void default_dtor_section_asm_out_destructor PARAMS ((struct rtx_def *,
- int));
-extern void default_stabs_asm_out_constructor PARAMS ((struct rtx_def *, int));
-extern void default_named_section_asm_out_constructor PARAMS ((struct rtx_def *,
- int));
-extern void default_ctor_section_asm_out_constructor PARAMS ((struct rtx_def *,
- int));
-
-extern void default_select_section PARAMS ((tree, int,
- unsigned HOST_WIDE_INT));
-extern void default_elf_select_section PARAMS ((tree, int,
- unsigned HOST_WIDE_INT));
-extern void default_unique_section PARAMS ((tree, int));
-extern void default_select_rtx_section PARAMS ((enum machine_mode, rtx,
- unsigned HOST_WIDE_INT));
-extern void default_elf_select_rtx_section PARAMS ((enum machine_mode, rtx,
- unsigned HOST_WIDE_INT));
-extern const char *default_strip_name_encoding PARAMS ((const char *));
-extern bool default_binds_local_p PARAMS ((tree));
-
-/* Emit data for vtable gc for GNU binutils. */
-extern void assemble_vtable_entry PARAMS ((struct rtx_def *, HOST_WIDE_INT));
-extern void assemble_vtable_inherit PARAMS ((struct rtx_def *,
- struct rtx_def *));
+#define SECTION_TLS 0x40000 /* contains thread-local storage */
+#define SECTION_NOTYPE 0x80000 /* don't output @progbits */
+#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. */
+
+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,
+
+ SECCAT_EMUTLS_VAR,
+ SECCAT_EMUTLS_TMPL
+};
+
+/* 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 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 unsigned int default_section_type_flags (tree, const char *, 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_stabs_asm_out_destructor (rtx, int);
+extern void default_named_section_asm_out_destructor (rtx, int);
+extern void default_dtor_section_asm_out_destructor (rtx, int);
+extern void default_stabs_asm_out_constructor (rtx, int);
+extern void default_named_section_asm_out_constructor (rtx, int);
+extern void default_ctor_section_asm_out_constructor (rtx, 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 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 (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_internal_label (FILE *, const char *, unsigned long);
+extern void default_file_start (void);
+extern void file_end_indicate_exec_stack (void);
+
+extern void default_elf_asm_output_external (FILE *file, tree,
+ const char *);
+extern int maybe_assemble_visibility (tree);
+
+extern int default_address_cost (rtx, bool);
+
+/* dbxout helper functions */
+#if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO
+
+extern void dbxout_int (int);
+extern void dbxout_stabd (int, int);
+extern void dbxout_begin_stabn (int);
+extern void dbxout_begin_stabn_sline (int);
+extern void dbxout_begin_empty_stabs (int);
+extern void dbxout_begin_simple_stabs (const char *, int);
+extern void dbxout_begin_simple_stabs_desc (const char *, int, int);
+
+extern void dbxout_stab_value_zero (void);
+extern void dbxout_stab_value_label (const char *);
+extern void dbxout_stab_value_label_diff (const char *, const char *);
+extern void dbxout_stab_value_internal_label (const char *, int *);
+extern void dbxout_stab_value_internal_label_diff (const char *, int *,
+ const char *);
+
+#endif
+
+#endif /* ! GCC_OUTPUT_H */
OSDN Git Service
