/* script-c.h -- C interface for linker scripts in gold. */
-/* Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 2006-2021 Free Software Foundation, Inc.
Written by Ian Lance Taylor <iant@google.com>.
This file is part of gold.
typedef void* Expression_ptr;
#endif
+/* Script_section type. */
+enum Script_section_type
+{
+ /* No section type. */
+ SCRIPT_SECTION_TYPE_NONE,
+ SCRIPT_SECTION_TYPE_NOLOAD,
+ SCRIPT_SECTION_TYPE_DSECT,
+ SCRIPT_SECTION_TYPE_COPY,
+ SCRIPT_SECTION_TYPE_INFO,
+ SCRIPT_SECTION_TYPE_OVERLAY
+};
+
+/* A constraint for whether to use a particular output section
+ definition. */
+
+enum Section_constraint
+{
+ /* No constraint. */
+ CONSTRAINT_NONE,
+ /* Only if all input sections are read-only. */
+ CONSTRAINT_ONLY_IF_RO,
+ /* Only if at least input section is writable. */
+ CONSTRAINT_ONLY_IF_RW,
+ /* Special constraint. */
+ CONSTRAINT_SPECIAL
+};
+
/* The information we store for an output section header in the bison
parser. */
{
/* The address. This may be NULL. */
Expression_ptr address;
+ /* Section type. May be NULL string. */
+ enum Script_section_type section_type;
/* The load address, from the AT specifier. This may be NULL. */
Expression_ptr load_address;
/* The alignment, from the ALIGN specifier. This may be NULL. */
/* The input section alignment, from the SUBALIGN specifier. This
may be NULL. */
Expression_ptr subalign;
-};
-
-/* The information we store for an output section trailer in the bison
- parser. */
-
-struct Parser_output_section_trailer
-{
- /* The fill value. This may be NULL. */
- Expression_ptr fill;
+ /* A constraint on this output section. */
+ enum Section_constraint constraint;
};
/* We keep vectors of strings. In order to manage this in both C and
typedef void* String_list_ptr;
#endif
+/* The information we store for an output section trailer in the bison
+ parser. */
+
+struct Parser_output_section_trailer
+{
+ /* The fill value. This may be NULL. */
+ Expression_ptr fill;
+ /* The program segments this section should go into. This may be
+ NULL. */
+ String_list_ptr phdrs;
+};
+
/* The different sorts we can find in a linker script. */
enum Sort_wildcard
SORT_WILDCARD_BY_NAME,
SORT_WILDCARD_BY_ALIGNMENT,
SORT_WILDCARD_BY_NAME_BY_ALIGNMENT,
- SORT_WILDCARD_BY_ALIGNMENT_BY_NAME
+ SORT_WILDCARD_BY_ALIGNMENT_BY_NAME,
+ SORT_WILDCARD_BY_INIT_PRIORITY
};
/* The information we build for a single wildcard specification. */
struct Wildcard_sections input_sections;
};
+/* Information for a program header. */
+
+struct Phdr_info
+{
+ /* A boolean value: whether to include the file header. */
+ int includes_filehdr;
+ /* A boolean value: whether to include the program headers. */
+ int includes_phdrs;
+ /* A boolean value: whether the flags field is valid. */
+ int is_flags_valid;
+ /* The value to use for the flags. */
+ unsigned int flags;
+ /* The load address. */
+ Expression_ptr load_address;
+};
+
struct Version_dependency_list;
struct Version_expression_list;
struct Version_tree;
extern void
yyerror(void* closure, const char*);
+/* Called by the bison parser to add an external symbol (a symbol in
+ an EXTERN declaration) to the link. */
+
+extern void
+script_add_extern(void* closure, const char*, size_t);
+
/* Called by the bison parser to add a file to the link. */
extern void
script_add_file(void* closure, const char*, size_t);
+/* Called by the bison parser to add a library to the link. */
+
+extern void
+script_add_library(void* closure, const char*, size_t);
+
/* Called by the bison parser to start and stop a group. */
extern void
extern void
script_set_entry(void* closure, const char*, size_t);
+/* Called by the bison parser to set whether to define common symbols. */
+
+extern void
+script_set_common_allocation(void* closure, int);
+
/* Called by the bison parser to parse an OPTION. */
extern void
script_parse_option(void* closure, const char*, size_t);
+/* Called by the bison parser to handle OUTPUT_FORMAT. This return 0
+ if the parse should be aborted. */
+
+extern int
+script_check_output_format(void* closure, const char*, size_t,
+ const char*, size_t, const char*, size_t);
+
+/* Called by the bison parser to handle TARGET. */
+extern void
+script_set_target(void* closure, const char*, size_t);
+
+/* Called by the bison parser to handle SEARCH_DIR. */
+
+extern void
+script_add_search_dir(void* closure, const char*, size_t);
+
/* Called by the bison parser to push the lexer into expression
mode. */
extern void
script_pop_lex_mode(void* closure);
+/* Called by the bison parser to get the value of a symbol. This is
+ called for a reference to a symbol, but is not called for something
+ like "sym += 10". Uses of the special symbol "." can just call
+ script_exp_string. */
+
+extern Expression_ptr
+script_symbol(void* closure, const char*, size_t);
+
/* Called by the bison parser to set a symbol to a value. PROVIDE is
non-zero if the symbol should be provided--only defined if there is
an undefined reference. HIDDEN is non-zero if the symbol should be
extern String_list_ptr
script_string_list_append(String_list_ptr, String_list_ptr);
+/* Define a new program header. */
+
+extern void
+script_add_phdr(void* closure, const char* name, size_t namelen,
+ unsigned int type, const struct Phdr_info*);
+
+/* Convert a program header string to a type. */
+
+extern unsigned int
+script_phdr_string_to_type(void* closure, const char*, size_t);
+
+/* Handle DATA_SEGMENT_ALIGN and DATA_SEGMENT_RELRO_END. */
+
+extern void
+script_data_segment_align(void* closure);
+
+extern void
+script_data_segment_relro_end(void* closure);
+
+/* Record the fact that a SEGMENT_START expression is seen. */
+
+extern void
+script_saw_segment_start_expression(void* closure);
+
+/* Called by the bison parser for MEMORY regions. */
+
+extern void
+script_add_memory(void*, const char*, size_t, unsigned int,
+ Expression_ptr, Expression_ptr);
+
+extern unsigned int
+script_parse_memory_attr(void*, const char*, size_t, int);
+
+extern void
+script_set_section_region(void*, const char*, size_t, int);
+
+extern void
+script_include_directive(int, void *, const char*, size_t);
+
/* Called by the bison parser for expressions. */
extern Expression_ptr
extern Expression_ptr
script_exp_function_loadaddr(const char*, size_t);
extern Expression_ptr
-script_exp_function_origin(const char*, size_t);
+script_exp_function_origin(void*, const char*, size_t);
extern Expression_ptr
-script_exp_function_length(const char*, size_t);
+script_exp_function_length(void*, const char*, size_t);
extern Expression_ptr
script_exp_function_constant(const char*, size_t);
extern Expression_ptr
script_register_vers_node(void* closure,
const char* tag,
int taglen,
- struct Version_tree *,
- struct Version_dependency_list *);
+ struct Version_tree*,
+ struct Version_dependency_list*);
-extern struct Version_dependency_list *
+extern struct Version_dependency_list*
script_add_vers_depend(void* closure,
- struct Version_dependency_list *existing_dependencies,
- const char *depend_to_add, int deplen);
+ struct Version_dependency_list* existing_dependencies,
+ const char* depend_to_add, int deplen);
-extern struct Version_expression_list *
+extern struct Version_expression_list*
script_new_vers_pattern(void* closure,
- struct Version_expression_list *,
- const char *, int, int);
+ struct Version_expression_list*,
+ const char*, int, int);
-extern struct Version_expression_list *
-script_merge_expressions(struct Version_expression_list *a,
- struct Version_expression_list *b);
+extern struct Version_expression_list*
+script_merge_expressions(struct Version_expression_list* a,
+ struct Version_expression_list* b);
-extern struct Version_tree *
+extern struct Version_tree*
script_new_vers_node(void* closure,
- struct Version_expression_list *global,
- struct Version_expression_list *local);
+ struct Version_expression_list* global,
+ struct Version_expression_list* local);
extern void
version_script_push_lang(void* closure, const char* lang, int langlen);