-/* 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, 2006, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+/* Declarations for insn-output.c and other code to write to asm_out_file.
+ These functions are defined in final.c, and varasm.c.
+ Copyright (C) 1987-2022 Free Software Foundation, Inc.
This file is part of GCC.
/* 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 (rtx);
+extern int get_attr_length (rtx_insn *);
/* 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);
+extern int get_attr_min_length (rtx_insn *);
/* 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);
+extern void shorten_branches (rtx_insn *);
+
+const char *get_some_local_dynamic_name ();
/* 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 (rtx, FILE *, int);
+extern void final_start_function (rtx_insn *, FILE *, int);
/* Output assembler code for the end of a function.
For clarity, args are same as those of `final_start_function'
extern void final_end_function (void);
/* Output assembler code for some insns: all or part of a function. */
-extern void final (rtx, FILE *, int);
+extern void final (rtx_insn *, 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 (rtx, FILE *, int, int, int *);
+extern rtx_insn *final_scan_insn (rtx_insn *, 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 (rtx *);
+extern rtx alter_subreg (rtx *, bool);
/* Print an operand using machine-dependent assembler syntax. */
extern void output_operand (rtx, int);
/* 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 (rtx);
+extern int insn_current_reference_address (rtx_insn *);
/* Find the alignment associated with a CODE_LABEL.
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);
+extern align_flags label_to_alignment (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
+/* Print a memory reference operand for address X with access mode MODE
using machine-dependent assembler syntax. */
-extern void output_address (rtx);
+extern void output_address (machine_mode, rtx);
/* Print an integer constant expression in assembler syntax.
Addition and subtraction are the only arithmetic
and fixed syntactic prefixes. */
#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 (rtx, rtx *, rtx *);
-
/* Return nonzero if this function has no function calls. */
extern int leaf_function_p (void);
/* 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 (rtx);
+extern int final_forward_branch_p (rtx_insn *);
/* Return 1 if this function uses only the registers that can be
safely renumbered. */
extern void leaf_renumber_regs_insn (rtx);
/* Locate the proper template for the given insn-code. */
-extern const char *get_insn_template (int, rtx);
+extern const char *get_insn_template (int, rtx_insn *);
/* Functions in varasm.c. */
-/* Declare DECL to be a weak symbol. */
-extern void declare_weak (tree);
-/* Merge weak status. */
-extern void merge_weak (tree, tree);
-
/* 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,
external name. */
extern int decode_reg_name_and_count (const char *, int *);
-extern void assemble_alias (tree, tree);
extern void do_assemble_alias (tree, tree);
+extern void do_assemble_symver (tree, tree);
extern void default_assemble_visibility (tree, int);
for an `asm' keyword used between functions. */
extern void assemble_asm (tree);
+/* Get the function's name from a decl, as described by its RTL. */
+extern const char *get_fnname_from_decl (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
initial value (that will be done by the caller). */
extern void assemble_variable (tree, int, int, int);
+/* Put the vtable verification constructor initialization function
+ into the preinit array. */
+extern void assemble_vtv_preinit_initializer (tree);
+
+/* Assemble everything that is needed for a variable declaration that has
+ no definition in the current translation unit. */
+extern void assemble_undefined_decl (tree);
+
/* 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);
extern void assemble_zeros (unsigned HOST_WIDE_INT);
/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */
-extern void assemble_align (int);
+extern void assemble_align (unsigned int);
/* Assemble a string constant with the specified C string as contents. */
extern void assemble_string (const char *, int);
addition of an underscore). */
extern void assemble_name_raw (FILE *, const char *);
+/* Return NAME that should actually be emitted, looking through
+ transparent aliases. If NAME refers to an entity that is also
+ represented as a tree (like a function or variable), mark the entity
+ as referenced. */
+extern const char *assemble_name_resolve (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
#define assemble_aligned_integer(SIZE, VALUE) \
assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1)
-#ifdef REAL_VALUE_TYPE_SIZE
-/* Assemble the floating-point constant D into an object of size MODE. */
-extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned);
-#endif
+/* Assemble the floating-point constant D into an object of size MODE. ALIGN
+ is the alignment of the constant in bits. If REVERSE is true, D is output
+ in reverse storage order. */
+extern void assemble_real (REAL_VALUE_TYPE, scalar_float_mode, unsigned,
+ bool = false);
/* 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);
+/* Return TRUE if and only if the constant pool has no entries. Note
+ that even entries we might end up choosing not to emit are counted
+ here, so there is the potential for missed optimizations. */
+extern bool constant_pool_empty_p (void);
-#ifdef HAVE_peephole
-extern rtx peephole (rtx);
-#endif
+extern rtx_insn *peephole (rtx_insn *);
extern void output_shared_constant_pool (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
- element of a "constant" initializer.
-
- Return null_pointer_node if the value is absolute;
- if it is relocatable, return the variable that determines the relocation.
- 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 (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.
-
- Generate exactly SIZE bytes of assembler data, padding at the end
- 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 (tree, unsigned HOST_WIDE_INT, unsigned int);
-
/* 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
insn output code.
This variable is defined in final.c. */
-extern rtx final_sequence;
-
-/* The line number of the beginning of the current function. Various
- md code needs this so that it can output relative linenumbers. */
-
-#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */
-extern int sdb_begin_function_line;
-#endif
+extern rtx_sequence *final_sequence;
/* File in which assembler code is being written. */
/* The first weak object in the file. */
extern const char *weak_global_object_name;
-/* Nonzero if function being compiled doesn't contain any calls
- (ignoring the prologue and epilogue). This is set prior to
- local register allocation and is valid for the remaining
- compiler passes. */
-
-extern int current_function_is_leaf;
-
-/* Nonzero if function being compiled doesn't modify the stack pointer
- (ignoring the prologue and epilogue). This is only valid after
- pass_stack_ptr_mod has run. */
-
-extern int current_function_sp_is_unchanging;
-
-/* Nonzero if the function being compiled is a leaf function which only
- uses leaf registers. This is valid after reload (specifically after
- sched2) and is useful only if the port defines LEAF_REGISTERS. */
-
-extern int current_function_uses_only_leaf_regs;
-
-/* Default file in which to dump debug output. */
-
-#ifdef BUFSIZ
-extern FILE *dump_file;
-#endif
-
/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */
extern rtx current_insn_predicate;
/* Last insn processed by final_scan_insn. */
-extern rtx current_output_insn;
+extern rtx_insn *current_output_insn;
/* Nonzero while outputting an `asm' with operands.
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;
+extern const rtx_insn *this_is_asm_operands;
/* Carry information from ASM_DECLARE_OBJECT_NAME
to ASM_FINISH_DECLARE_OBJECT. */
given a constant expression. */
extern int compute_reloc_for_constant (tree);
+/* This can be used to compute RELOC for get_variable_section. */
+extern int compute_reloc_for_var (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 (FILE *, HOST_WIDE_INT);
+extern void default_function_pro_epilogue (FILE *);
/* Default target function switched text sections. */
extern void default_function_switched_text_sections (FILE *, tree, bool);
extern void no_asm_to_stream (FILE *);
/* 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_DEBUG 0x00400 /* contains debug data */
-#define SECTION_LINKONCE 0x00800 /* is linkonce */
-#define SECTION_SMALL 0x01000 /* contains "small data" */
-#define SECTION_BSS 0x02000 /* contains zeros only */
-#define SECTION_FORGET 0x04000 /* forget that we've entered the section */
-#define SECTION_MERGE 0x08000 /* contains mergeable data */
-#define SECTION_STRINGS 0x10000 /* contains zero terminated strings without
- embedded zeros */
-#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_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
+enum section_flag
+{
+ /* This SECTION_STYLE is used for unnamed sections that we can switch
+ to using a special assembler directive. */
+ SECTION_UNNAMED = 0,
+
+ SECTION_ENTSIZE = (1UL << 8) - 1, /* entity size in section */
+ SECTION_CODE = 1UL << 8, /* contains code */
+ SECTION_WRITE = 1UL << 9, /* data is writable */
+
+ SECTION_DEBUG = 1UL << 10, /* contains debug data */
+ SECTION_LINKONCE = 1UL << 11, /* is linkonce */
+ SECTION_SMALL = 1UL << 12, /* contains "small data" */
+ SECTION_BSS = 1UL << 13, /* contains zeros only */
+ SECTION_MERGE = 1UL << 14, /* contains mergeable data */
+ SECTION_STRINGS = 1UL << 15, /* contains zero terminated strings
+ without embedded zeros */
+ SECTION_OVERRIDE = 1UL << 16, /* allow override of default flags */
+ SECTION_TLS = 1UL << 17, /* contains thread-local storage */
+ SECTION_NOTYPE = 1UL << 18, /* don't output @progbits */
+ SECTION_DECLARED = 1UL << 19, /* section has been used */
+
+ /* This SECTION_STYLE is used for named sections that we can switch
+ to using a general section directive. */
+ SECTION_NAMED = 1UL << 20,
+
+ /* 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. */
+ SECTION_NOSWITCH = 1UL << 21,
+
+ /* bits used for SECTION_STYLE */
+ SECTION_STYLE_MASK = SECTION_NAMED | SECTION_NOSWITCH,
+
+ SECTION_COMMON = 1UL << 22, /* contains common data */
+ SECTION_RELRO = 1UL << 23, /* data is readonly after
+ relocation processing */
+ SECTION_EXCLUDE = 1UL << 24, /* discarded by the linker */
+ SECTION_RETAIN = 1UL << 25, /* retained by the linker. */
+ SECTION_LINK_ORDER = 1UL << 26, /* section needs link-order. */
+
+ /* NB: The maximum SECTION_MACH_DEP is (1UL << 28) since AVR needs 4 bits
+ in SECTION_MACH_DEP. */
+ SECTION_MACH_DEP = 1UL << 27,
+
+ /* subsequent bits reserved for target */
+};
/* A helper function for default_elf_select_section and
default_elf_unique_section. Categorizes the 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 *);
+typedef void (*unnamed_section_callback) (const char *);
/* Information about a SECTION_UNNAMED section. */
struct GTY(()) unnamed_section {
/* 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;
+ unnamed_section_callback GTY ((callback)) callback;
+ const char *data;
/* The next entry in the chain of unnamed sections. */
section *next;
struct section_common common;
/* The callback used to assemble decls in this section. */
- noswitch_section_callback GTY ((skip)) callback;
+ noswitch_section_callback GTY ((callback)) callback;
};
/* Information about a section, which may be named or unnamed. */
-union GTY ((desc ("SECTION_STYLE (&(%h))"))) section {
+union GTY ((desc ("SECTION_STYLE (&(%h))"), for_user)) section {
struct section_common GTY ((skip)) common;
struct named_section GTY ((tag ("SECTION_NAMED"))) named;
struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed;
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_unnamed_section (unsigned int, void (*) (const char *),
+ const char *);
+extern section *get_section (const char *, unsigned int, tree,
+ bool not_existing = false);
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,
+extern section *mergeable_constant_section (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 void switch_to_other_text_partition (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 switch_to_section (section *, tree = nullptr);
+extern void output_section_asm_op (const char *);
extern void record_tm_clone_pair (tree, tree);
extern void finish_tm_clone_pairs (void);
extern unsigned int default_section_type_flags (tree, const char *, int);
extern bool have_global_bss_p (void);
+extern bool bss_initializer_p (const_tree, bool = false);
+
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_function_rodata_section (tree, bool);
+extern section *default_no_function_rodata_section (tree, bool);
extern section *default_clone_table_section (void);
-extern section *default_select_rtx_section (enum machine_mode, rtx,
+extern section *default_select_rtx_section (machine_mode, rtx,
unsigned HOST_WIDE_INT);
-extern section *default_elf_select_rtx_section (enum machine_mode, rtx,
+extern section *default_elf_select_rtx_section (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_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 bool default_binds_local_p_2 (const_tree);
+extern bool default_binds_local_p_3 (const_tree, bool, bool, bool, bool);
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_elf_fini_array_asm_out_destructor (rtx, int);
extern int maybe_assemble_visibility (tree);
-extern int default_address_cost (rtx, bool);
+extern int default_address_cost (rtx, machine_mode, addr_space_t, bool);
-/* Output stack usage information. */
+/* Stack usage. */
extern void output_stack_usage (void);
-/* 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 */
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