X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gold%2Fscript-c.h;h=41e07009214f4d7a81f6e9033ef9a15d65fd9a84;hb=d27c357a5b83773054e85ff3ea5dbfe18b9dd3c0;hp=95816b76dd85f28f73cba7f1f6081dfc0402a5d9;hpb=e5756efb6d46f569d2e99d19f726b32b84f58bd7;p=deliverable%2Fbinutils-gdb.git

diff --git a/gold/script-c.h b/gold/script-c.h
index 95816b76dd..41e0700921 100644
--- a/gold/script-c.h
+++ b/gold/script-c.h
@@ -1,6 +1,6 @@
 /* script-c.h -- C interface for linker scripts in gold.  */
 
-/* Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 2006-2020 Free Software Foundation, Inc.
    Written by Ian Lance Taylor <iant@google.com>.
 
    This file is part of gold.
@@ -27,7 +27,18 @@
 #define GOLD_SCRIPT_C_H
 
 #ifdef __cplusplus
-extern "C" {
+#include <vector>
+#include <string>
+#endif
+
+#ifdef __cplusplus
+
+// For the C++ code we declare the various supporting structures in
+// the gold namespace.  For the C code we declare it at the top level.
+// The namespace level should not affect the layout of the structure.
+
+namespace gold
+{
 #endif
 
 /* A string value for the bison parser.  */
@@ -44,15 +55,158 @@ struct Parser_string
    alike.  */
 
 #ifdef __cplusplus
-namespace gold
-{
 class Expression;
-}
-typedef gold::Expression* Expression_ptr;
+typedef Expression* Expression_ptr;
 #else
 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.  */
+
+struct Parser_output_section_header
+{
+  /* 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.  */
+  Expression_ptr align;
+  /* The input section alignment, from the SUBALIGN specifier.  This
+     may be NULL.  */
+  Expression_ptr subalign;
+  /* A constraint on this output section.  */
+  enum Section_constraint constraint;
+};
+
+/* We keep vectors of strings.  In order to manage this in both C and
+   C++, we use a pointer to a vector.  This assumes that all pointers
+   look the same.  */
+
+#ifdef __cplusplus
+typedef std::vector<std::string> String_list;
+typedef String_list* String_list_ptr;
+#else
+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_NONE,
+  SORT_WILDCARD_BY_NAME,
+  SORT_WILDCARD_BY_ALIGNMENT,
+  SORT_WILDCARD_BY_NAME_BY_ALIGNMENT,
+  SORT_WILDCARD_BY_ALIGNMENT_BY_NAME,
+  SORT_WILDCARD_BY_INIT_PRIORITY
+};
+
+/* The information we build for a single wildcard specification.  */
+
+struct Wildcard_section
+{
+  /* The wildcard spec itself.  */
+  struct Parser_string name;
+  /* How the entries should be sorted.  */
+  enum Sort_wildcard sort;
+};
+
+/* A vector of Wildcard_section entries.  */
+
+#ifdef __cplusplus
+typedef std::vector<Wildcard_section> String_sort_list;
+typedef String_sort_list* String_sort_list_ptr;
+#else
+typedef void* String_sort_list_ptr;
+#endif
+
+/* A list of wildcard specifications, which may include EXCLUDE_FILE
+   clauses.  */
+
+struct Wildcard_sections
+{
+  /* Wildcard specs.  */
+  String_sort_list_ptr sections;
+  /* Exclusions.  */
+  String_list_ptr exclude;
+};
+
+/* A complete input section specification.  */
+
+struct Input_section_spec
+{
+  /* The file name.  */
+  struct Wildcard_section file;
+  /* The list of sections.  */
+  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;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* The bison parser definitions.  */
 
 #include "yyscript.h"
@@ -72,11 +226,22 @@ yylex(YYSTYPE*, void* closure);
 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
@@ -96,22 +261,57 @@ script_end_as_needed(void* closure);
 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_push_lex_into_expression_mode(void* closure);
 
+/* Called by the bison parser to push the lexer into version
+   mode.  */
+
+extern void
+script_push_lex_into_version_mode(void* closure);
+
 /* Called by the bison parser to pop the lexer 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
@@ -121,6 +321,122 @@ extern void
 script_set_symbol(void* closure, const char*, size_t, Expression_ptr,
 		  int provide, int hidden);
 
+/* Called by the bison parser to add an assertion.  */
+
+extern void
+script_add_assertion(void* closure, Expression_ptr, const char* message,
+		     size_t messagelen);
+
+/* Called by the bison parser to start a SECTIONS clause.  */
+
+extern void
+script_start_sections(void* closure);
+
+/* Called by the bison parser to finish a SECTIONS clause.  */
+
+extern void
+script_finish_sections(void* closure);
+
+/* Called by the bison parser to start handling input section
+   specifications for an output section.  */
+
+extern void
+script_start_output_section(void* closure, const char* name, size_t namelen,
+			    const struct Parser_output_section_header*);
+
+/* Called by the bison parser when done handling input section
+   specifications for an output section.  */
+
+extern void
+script_finish_output_section(void* closure,
+			     const struct Parser_output_section_trailer*);
+
+/* Called by the bison parser to handle a data statement (LONG, BYTE,
+   etc.) in an output section.  */
+
+extern void
+script_add_data(void* closure, int data_token, Expression_ptr val);
+
+/* Called by the bison parser to set the fill value in an output
+   section.  */
+
+extern void
+script_add_fill(void* closure, Expression_ptr val);
+
+/* Called by the bison parser to add an input section specification to
+   an output section.  The KEEP parameter is non-zero if this is
+   within a KEEP clause, meaning that the garbage collector should not
+   discard it.  */
+
+extern void
+script_add_input_section(void* closure, const struct Input_section_spec*,
+			 int keep);
+
+/* Create a new list of string and sort entries.  */
+
+extern String_sort_list_ptr
+script_new_string_sort_list(const struct Wildcard_section*);
+
+/* Add an entry to a list of string and sort entries.  */
+
+extern String_sort_list_ptr
+script_string_sort_list_add(String_sort_list_ptr,
+			    const struct Wildcard_section*);
+
+/* Create a new list of strings.  */
+
+extern String_list_ptr
+script_new_string_list(const char*, size_t);
+
+/* Add an element to a list of strings.  */
+
+extern String_list_ptr
+script_string_list_push_back(String_list_ptr, const char*, size_t);
+
+/* Concatenate two string lists.  */
+
+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
@@ -178,7 +494,7 @@ script_exp_function_min(Expression_ptr, Expression_ptr);
 extern Expression_ptr
 script_exp_function_defined(const char*, size_t);
 extern Expression_ptr
-script_exp_function_sizeof_headers();
+script_exp_function_sizeof_headers(void);
 extern Expression_ptr
 script_exp_function_alignof(const char*, size_t);
 extern Expression_ptr
@@ -188,9 +504,9 @@ script_exp_function_addr(const char*, size_t);
 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
@@ -208,8 +524,44 @@ script_exp_function_segment_start(const char*, size_t, Expression_ptr);
 extern Expression_ptr
 script_exp_function_assert(Expression_ptr, const char*, size_t);
 
+extern void
+script_register_vers_node(void* closure,
+			  const char* tag,
+			  int taglen,
+			  struct Version_tree*,
+			  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);
+
+extern struct Version_expression_list*
+script_new_vers_pattern(void* closure,
+			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_tree*
+script_new_vers_node(void* closure,
+		     struct Version_expression_list* global,
+		     struct Version_expression_list* local);
+
+extern void
+version_script_push_lang(void* closure, const char* lang, int langlen);
+
+extern void
+version_script_pop_lang(void* closure);
+
+#ifdef __cplusplus
+} // End extern "C"
+#endif
+
 #ifdef __cplusplus
-}
+} // End namespace gold.
 #endif
 
 #endif /* !defined(GOLD_SCRIPT_C_H) */