#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "target.h"
#include "rtl.h"
#include "tree.h"
#include "memmodel.h"
#include "tm_p.h"
#include "stringpool.h"
#include "varasm.h"
#include "output.h"
#include "dwarf2asm.h"
#include "dwarf2.h"
#include "function.h"
#include "emit-rtl.h"
#include "fold-const.h"
#include "gt-dwarf2asm.h"

Include dependency graph for dwarf2asm.cc:

Macros
#define	XCOFF_DEBUGGING_INFO 0

#define	S(p, v) case p: return v;

#define	USE_LINKONCE_INDIRECT 0

Functions
void	dw2_assemble_integer (int size, rtx x)

void	dw2_asm_output_data_raw (int size, unsigned HOST_WIDE_INT value)

void	dw2_asm_output_data (int size, unsigned HOST_WIDE_INT value, const char *comment,...)

void	dw2_asm_output_delta (int size, const char lab1, const char lab2, const char *comment,...)

void	dw2_asm_output_offset (int size, const char label, section base, const char *comment,...)

void	dw2_asm_output_offset (int size, const char label, HOST_WIDE_INT offset, section base, const char *comment,...)

void	dw2_asm_output_addr (int size, const char label, const char comment,...)

void	dw2_asm_output_addr_rtx (int size, rtx addr, const char *comment,...)

void	dw2_asm_output_nstring (const char str, size_t orig_len, const char comment,...)

int	size_of_uleb128 (unsigned HOST_WIDE_INT value)

int	size_of_sleb128 (HOST_WIDE_INT value)

int	size_of_encoded_value (int encoding)

const char *	eh_data_format_name (int format)

void	dw2_asm_output_data_uleb128_raw (unsigned HOST_WIDE_INT value)

void	dw2_asm_output_data_uleb128 (unsigned HOST_WIDE_INT value, const char *comment,...)

void	dw2_asm_output_data_sleb128_raw (HOST_WIDE_INT value)

void	dw2_asm_output_data_sleb128 (HOST_WIDE_INT value, const char *comment,...)

void	dw2_asm_output_symname_uleb128 (const char lab1, const char comment,...)

void	dw2_asm_output_delta_uleb128 (const char lab1, const char lab2, const char *comment,...)

static int	compare_strings (const void a, const void b)

rtx	dw2_force_const_mem (rtx x, bool is_public)

static int	dw2_output_indirect_constant_1 (const char *sym, tree id)

void	dw2_output_indirect_constants (void)

void	dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr, bool is_public, const char *comment,...)

Variables
static hash_map< const char , tree >	indirect_pool

static int	dw2_const_labelno

Macro Definition Documentation

◆ S

#define S	(		p,
			v ) case p: return v;

◆ USE_LINKONCE_INDIRECT

#define USE_LINKONCE_INDIRECT 0

Referenced by dw2_force_const_mem(), and dw2_output_indirect_constant_1().

◆ XCOFF_DEBUGGING_INFO

#define XCOFF_DEBUGGING_INFO 0

Dwarf2 assembler output helper routines.
   Copyright (C) 2001-2024 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 3, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.

Referenced by dw2_asm_output_nstring().

Function Documentation

◆ compare_strings()

static int compare_strings	(	const void *	a,
		const void *	b )

static

Compare two std::pair<const char *, tree> by their first element.
Returns <0, 0, or
>0 to indicate whether K1 is less than, equal to, or greater than
K2, respectively.

References a, b, gcc_assert, and ggc_alloc().

Referenced by dw2_output_indirect_constants().

◆ dw2_asm_output_addr()

void dw2_asm_output_addr	(	int	size,
		const char *	label,
		const char *	comment,
			... )

Output an absolute reference to a label.

References ap, ASM_COMMENT_START, asm_out_file, dw2_assemble_integer(), fputc(), ggc_alloc(), and vfprintf().

Referenced by output_addr_table(), output_aranges(), output_attr_index_or_value(), output_cfi(), output_die(), output_fde(), output_loc_list(), output_one_line_info_table(), output_ranges(), and output_rnglists().

◆ dw2_asm_output_addr_rtx()

void dw2_asm_output_addr_rtx	(	int	size,
		rtx	addr,
		const char *	comment,
			... )

Similar, but use an RTX expression instead of a text label.

References ap, ASM_COMMENT_START, asm_out_file, dw2_assemble_integer(), fputc(), ggc_alloc(), and vfprintf().

Referenced by output_addr_table(), output_attr_index_or_value(), and output_loc_operands().

◆ dw2_asm_output_data()

void dw2_asm_output_data	(	int	size,
		unsigned HOST_WIDE_INT	value,
		const char *	comment,
			... )

Output an immediate constant in a given SIZE in bytes.

References ap, ASM_COMMENT_START, asm_out_file, assemble_integer(), fprint_whex(), GEN_INT, ggc_alloc(), HOST_BITS_PER_WIDE_INT, HOST_WIDE_INT_M1U, integer_asm_op(), and vfprintf().

Referenced by btf_asm_array(), btf_asm_datasec_entry(), btf_asm_datasec_type(), btf_asm_datasec_type_ref(), btf_asm_enum_const(), btf_asm_func_arg(), btf_asm_func_type(), btf_asm_sou_member(), btf_asm_type(), btf_asm_type_ref(), btf_asm_varent(), count_index_strings(), ctf_asm_array(), ctf_asm_enum_const(), ctf_asm_func_arg(), ctf_asm_preamble(), ctf_asm_slice(), ctf_asm_sou_lmember(), ctf_asm_sou_member(), ctf_asm_stype(), ctf_asm_type(), ctf_asm_varent(), dw2_output_call_site_table(), dwarf2out_maybe_output_loclist_view_pair(), output_abbrev_section(), output_aranges(), output_asm_btf_vlen_bytes(), output_asm_ctf_vlen_bytes(), output_btf_header(), output_call_frame_info(), output_cfa_loc(), output_cfi(), output_comdat_type_unit(), output_comp_unit(), output_compilation_unit_header(), output_ctf_func_info(), output_ctf_funcidx(), output_ctf_header(), output_ctf_obj_info(), output_ctf_objtidx(), output_die(), output_die_abbrevs(), output_dwarf_version(), output_fde(), output_file_names(), output_line_info(), output_loc_list(), output_loc_operands(), output_loc_sequence(), output_one_function_exception_table(), output_one_line_info_table(), output_pubname(), output_pubnames(), output_range_list_offset(), output_ranges(), output_rnglists(), output_signature(), output_skeleton_debug_sections(), and prune_unmark_dies().

◆ dw2_asm_output_data_raw()

void dw2_asm_output_data_raw	(	int	size,
		unsigned HOST_WIDE_INT	value )

Output a value of a given size in target byte order.

References asm_out_file, ggc_alloc(), and i.

Referenced by output_loc_operands_raw().

◆ dw2_asm_output_data_sleb128()

void dw2_asm_output_data_sleb128	(	HOST_WIDE_INT	value,
		const char *	comment,
			... )

Output a signed LEB128 quantity.

References ap, ASM_COMMENT_START, asm_out_file, assemble_integer(), fputc(), GEN_INT, ggc_alloc(), HOST_WIDE_INT_PRINT_DEC, targetm, and vfprintf().

Referenced by output_call_frame_info(), output_cfi(), output_die(), output_die_abbrevs(), output_discr_value(), output_loc_operands(), and output_one_line_info_table().

◆ dw2_asm_output_data_sleb128_raw()

void dw2_asm_output_data_sleb128_raw ( HOST_WIDE_INT value )

Output an signed LEB128 quantity, but only the byte values.

References asm_out_file, fputc(), and ggc_alloc().

Referenced by output_loc_operands_raw().

◆ dw2_asm_output_data_uleb128()

void dw2_asm_output_data_uleb128	(	unsigned HOST_WIDE_INT	value,
		const char *	comment,
			... )

Output an unsigned LEB128 quantity.

References ap, ASM_COMMENT_START, asm_out_file, assemble_integer(), fprint_whex(), fputc(), GEN_INT, ggc_alloc(), HOST_WIDE_INT_PRINT_HEX, targetm, and vfprintf().

Referenced by dw2_output_call_site_table(), dwarf2out_maybe_output_loclist_view_pair(), output_attr_index_or_value(), output_call_frame_info(), output_cfa_loc(), output_cfi(), output_die(), output_die_abbrevs(), output_discr_value(), output_fde(), output_file_names(), output_loc_list(), output_loc_list_offset(), output_loc_operands(), output_one_function_exception_table(), output_one_line_info_table(), output_range_list_offset(), output_rnglists(), output_value_format(), and sjlj_output_call_site_table().

◆ dw2_asm_output_data_uleb128_raw()

void dw2_asm_output_data_uleb128_raw ( unsigned HOST_WIDE_INT value )

Output an unsigned LEB128 quantity, but only the byte values.

References asm_out_file, fputc(), and ggc_alloc().

Referenced by output_cfa_loc_raw(), output_cfi_directive(), and output_loc_operands_raw().

◆ dw2_asm_output_delta()

void dw2_asm_output_delta	(	int	size,
		const char *	lab1,
		const char *	lab2,
		const char *	comment,
			... )

Output the difference between two symbols in a given size.

??? There appear to be assemblers that do not like such
subtraction, but do support ASM_SET_OP.  It's unfortunately
impossible to do here, since the ASM_SET_OP for the difference
symbol must appear after both symbols are defined.

References ap, ASM_COMMENT_START, asm_out_file, dw2_assemble_integer(), fputc(), ggc_alloc(), and vfprintf().

Referenced by dw2_output_call_site_table(), output_aranges(), output_call_frame_info(), output_cfi(), output_die(), output_fde(), output_line_info(), output_loc_list(), output_loc_list_offset(), output_loclists_offsets(), output_one_line_info_table(), output_ranges(), output_rnglists(), and output_view_list_offset().

◆ dw2_asm_output_delta_uleb128()

void dw2_asm_output_delta_uleb128	(	const char *	lab1,
		const char *	lab2,
		const char *	comment,
			... )

References ap, ASM_COMMENT_START, asm_out_file, assemble_name(), fputc(), gcc_assert, ggc_alloc(), NULL, and vfprintf().

Referenced by dw2_output_call_site_table(), output_loc_list(), output_one_function_exception_table(), and output_rnglists().

◆ dw2_asm_output_encoded_addr_rtx()

void dw2_asm_output_encoded_addr_rtx	(	int	encoding,
		rtx	addr,
		bool	is_public,
		const char *	comment,
			... )

Like dw2_asm_output_addr_rtx, but encode the pointer as directed.
If PUBLIC is set and the encoding is DW_EH_PE_indirect, the indirect
reference is shared across the entire application (or DSO).

References ap, ASM_COMMENT_START, asm_out_file, assemble_align(), assemble_integer(), const0_rtx, const1_rtx, dw2_assemble_integer(), dw2_force_const_mem(), fputc(), gcc_assert, gcc_unreachable, GET_CODE, ggc_alloc(), pc_rtx, POINTER_SIZE, size_of_encoded_value(), vfprintf(), and XSTR.

Referenced by output_call_frame_info(), output_cfi(), output_fde(), and output_ttype().

◆ dw2_asm_output_nstring()

void dw2_asm_output_nstring	(	const char *	str,
		size_t	orig_len,
		const char *	comment,
			... )

Output the first ORIG_LEN characters of STR as a string.
If ORIG_LEN is equal to -1, ignore this parameter and output
the entire STR instead.
If COMMENT is not NULL and comments in the debug information
have been requested by the user, append the given COMMENT
to the generated output.

References ap, ASM_COMMENT_START, asm_out_file, ASM_OUTPUT_ASCII, assemble_integer(), const0_rtx, fputc(), ggc_alloc(), i, vfprintf(), and XCOFF_DEBUGGING_INFO.

Referenced by output_btf_strs(), output_call_frame_info(), output_ctf_strs(), output_die(), output_file_names(), output_line_string(), and output_pubname().

◆ dw2_asm_output_offset() [1/2]

void dw2_asm_output_offset	(	int	size,
		const char *	label,
		HOST_WIDE_INT	offset,
		section *	base,
		const char *	comment,
			... )

References ap, ASM_COMMENT_START, asm_out_file, dw2_assemble_integer(), fputc(), gen_int_mode(), ggc_alloc(), offset, and vfprintf().

◆ dw2_asm_output_offset() [2/2]

void dw2_asm_output_offset	(	int	size,
		const char *	label,
		section *	base,
		const char *	comment,
			... )

Output a section-relative reference to a LABEL, which was placed in
BASE.  In general this can only be done for debugging symbols.
E.g. on most targets with the GNU linker, this is accomplished with
a direct reference and the knowledge that the debugging section
will be placed at VMA 0.  Some targets have special relocations for
this that we must use.

References ap, ASM_COMMENT_START, asm_out_file, dw2_assemble_integer(), fputc(), ggc_alloc(), and vfprintf().

Referenced by btf_asm_datasec_entry(), output_aranges(), output_compilation_unit_header(), output_die(), output_fde(), output_line_string(), output_loc_list_offset(), output_loc_operands(), output_pubnames(), output_range_list_offset(), output_skeleton_debug_sections(), and output_view_list_offset().

◆ dw2_asm_output_symname_uleb128()

void dw2_asm_output_symname_uleb128	(	const char *	lab1,
		const char *	comment,
			... )

Output symbol LAB1 as an unsigned LEB128 quantity.  LAB1 should be
an assembler-computed constant, e.g. a view number, because we
can't have relocations in LEB128 quantities.

References ap, ASM_COMMENT_START, asm_out_file, assemble_name(), fputc(), gcc_unreachable, ggc_alloc(), and vfprintf().

Referenced by dwarf2out_maybe_output_loclist_view_pair(), and output_loc_list().

◆ dw2_assemble_integer()

void dw2_assemble_integer	(	int	size,
		rtx	x )

Output an unaligned integer with the given value and size.  Prefer not
to print a newline, since the caller may want to add a comment.

References asm_out_file, assemble_integer(), const0_rtx, CONST_INT_P, CONST_SCALAR_INT_P, DWARF2_ADDR_SIZE, fprint_whex(), ggc_alloc(), integer_asm_op(), INTVAL, and output_addr_const().

Referenced by dw2_asm_output_addr(), dw2_asm_output_addr_rtx(), dw2_asm_output_delta(), dw2_asm_output_encoded_addr_rtx(), dw2_asm_output_offset(), and dw2_asm_output_offset().

◆ dw2_force_const_mem()

rtx dw2_force_const_mem	(	rtx	x,
		bool	is_public )

Put X, a SYMBOL_REF, in memory.  Return a SYMBOL_REF to the allocated
memory.  Differs from force_const_mem in that a single pool is used for
the entire unit of translation, and the memory is not guaranteed to be
"near" the function in any interesting sense.  IS_PUBLIC controls whether
the symbol can be shared across the entire application (or DSO).

References hash_map< KeyId, Value, Traits >::create_ggc(), dw2_const_labelno, gcc_assert, GET_CODE, get_identifier(), ggc_alloc(), IDENTIFIER_POINTER, indirect_pool, maybe_get_identifier(), targetm, TREE_PUBLIC, TREE_SYMBOL_REFERENCED, USE_LINKONCE_INDIRECT, and XSTR.

Referenced by dw2_asm_output_encoded_addr_rtx(), and dwarf2out_do_cfi_startproc().

◆ dw2_output_indirect_constant_1()

static int dw2_output_indirect_constant_1	(	const char *	sym,
		tree	id )

static

A helper function for dw2_output_indirect_constants.  Emit one queued
constant to memory.

References assemble_integer(), assemble_variable(), build_decl(), build_fold_addr_expr, DECL_ARTIFICIAL, DECL_ASSEMBLER_NAME, DECL_IGNORED_P, DECL_INITIAL, DECL_VISIBILITY, ggc_alloc(), make_decl_one_only(), POINTER_SIZE, POINTER_SIZE_UNITS, ptr_type_node, SANITIZE_ADDRESS, SANITIZE_KERNEL_ADDRESS, SANITIZE_USER_ADDRESS, SET_DECL_ASSEMBLER_NAME, TREE_PUBLIC, TREE_READONLY, TREE_STATIC, UNKNOWN_LOCATION, USE_LINKONCE_INDIRECT, and VISIBILITY_HIDDEN.

Referenced by dw2_output_indirect_constants().

◆ dw2_output_indirect_constants()

void dw2_output_indirect_constants ( void )

Emit the constants queued through dw2_force_const_mem.

References compare_strings(), dw2_output_indirect_constant_1(), i, and indirect_pool.

Referenced by compile_file().

◆ eh_data_format_name()

const char * eh_data_format_name ( int format )

Yield a name for a given pointer encoding.

References gcc_assert, gcc_unreachable, ggc_alloc(), and S.

Referenced by output_call_frame_info(), and output_one_function_exception_table().

◆ size_of_encoded_value()

int size_of_encoded_value ( int encoding )

Given an encoding, return the number of bytes the format occupies.
This is only defined for fixed-size encodings, and so does not
include leb128.

References gcc_unreachable, ggc_alloc(), and POINTER_SIZE_UNITS.

Referenced by dw2_asm_output_encoded_addr_rtx(), output_call_frame_info(), output_fde(), and output_one_function_exception_table().

◆ size_of_sleb128()

int size_of_sleb128 ( HOST_WIDE_INT value )

Return the size of a signed LEB128 quantity.

Referenced by int_loc_descriptor(), optimize_implicit_const(), output_call_frame_info(), size_of_die(), size_of_discr_value(), size_of_int_loc_descriptor(), and size_of_loc_descr().

◆ size_of_uleb128()

int size_of_uleb128 ( unsigned HOST_WIDE_INT value )

Return the size of an unsigned LEB128 quantity.

Referenced by dw2_size_of_call_site_table(), int_loc_descriptor(), loc_list_from_tree_1(), output_call_frame_info(), output_fde(), output_file_names(), output_loc_operands(), output_loc_operands_raw(), output_one_function_exception_table(), output_one_line_info_table(), size_of_die(), size_of_discr_value(), size_of_int_loc_descriptor(), size_of_loc_descr(), and sjlj_size_of_call_site_table().

Variable Documentation

◆ dw2_const_labelno

int dw2_const_labelno

static

Referenced by dw2_force_const_mem().

◆ indirect_pool

hash_map<const char *, tree>* indirect_pool

static

Referenced by dw2_force_const_mem(), and dw2_output_indirect_constants().

Macros

Functions

Variables

Macro Definition Documentation

◆ S

◆ USE_LINKONCE_INDIRECT

◆ XCOFF_DEBUGGING_INFO

Function Documentation

◆ compare_strings()

◆ dw2_asm_output_addr()

◆ dw2_asm_output_addr_rtx()

◆ dw2_asm_output_data()

◆ dw2_asm_output_data_raw()

◆ dw2_asm_output_data_sleb128()

◆ dw2_asm_output_data_sleb128_raw()

◆ dw2_asm_output_data_uleb128()

◆ dw2_asm_output_data_uleb128_raw()

◆ dw2_asm_output_delta()

◆ dw2_asm_output_delta_uleb128()

◆ dw2_asm_output_encoded_addr_rtx()

◆ dw2_asm_output_nstring()

◆ dw2_asm_output_offset() [1/2]

◆ dw2_asm_output_offset() [2/2]

◆ dw2_asm_output_symname_uleb128()

◆ dw2_assemble_integer()

◆ dw2_force_const_mem()

◆ dw2_output_indirect_constant_1()

◆ dw2_output_indirect_constants()

◆ eh_data_format_name()

◆ size_of_encoded_value()

◆ size_of_sleb128()

◆ size_of_uleb128()

Variable Documentation

◆ dw2_const_labelno

◆ indirect_pool