diff options
Diffstat (limited to 'gold/yyscript.y')
| -rw-r--r-- | gold/yyscript.y | 69 |
1 files changed, 68 insertions, 1 deletions
diff --git a/gold/yyscript.y b/gold/yyscript.y index ad76709..3605158 100644 --- a/gold/yyscript.y +++ b/gold/yyscript.y @@ -30,6 +30,7 @@ #include <stddef.h> #include <stdint.h> #include <stdlib.h> +#include <string.h> #include "script-c.h" @@ -70,6 +71,8 @@ struct Wildcard_section wildcard_section; /* A list of strings. */ String_list_ptr string_list; + /* Information for a program header. */ + struct Phdr_info phdr_info; /* Used for version scripts and within VERSION {}. */ struct Version_dependency_list* deplist; struct Version_expression_list* versyms; @@ -198,12 +201,15 @@ %type <output_section_header> section_header %type <output_section_trailer> section_trailer %type <constraint> opt_constraint +%type <string_list> opt_phdr %type <integer> data_length %type <input_section_spec> input_section_no_keep %type <wildcard_sections> wildcard_sections %type <wildcard_section> wildcard_file wildcard_section %type <string_list> exclude_names %type <string> wildcard_name +%type <integer> phdr_type +%type <phdr_info> phdr_info %type <versyms> vers_defns %type <versnode> vers_tag %type <deplist> verdep @@ -232,6 +238,7 @@ file_cmd: { script_end_group(closure); } | OPTION '(' string ')' { script_parse_option(closure, $3.value, $3.length); } + | PHDRS '{' phdrs_defs '}' | SEARCH_DIR '(' string ')' { script_add_search_dir(closure, $3.value, $3.length); } | SECTIONS '{' @@ -365,6 +372,7 @@ section_trailer: opt_memspec opt_at_memspec opt_phdr opt_fill opt_comma { $$.fill = $4; + $$.phdrs = $3; } ; @@ -385,8 +393,9 @@ opt_at_memspec: /* The program segment an output section should go into. */ opt_phdr: opt_phdr ':' string - { yyerror(closure, "program headers are not supported"); } + { $$ = script_string_list_push_back($1, $3.value, $3.length); } | /* empty */ + { $$ = NULL; } ; /* The value to use to fill an output section. FIXME: This does not @@ -587,6 +596,64 @@ file_or_sections_cmd: { script_add_assertion(closure, $3, $5.value, $5.length); } ; +/* A list of program header definitions. */ +phdrs_defs: + phdrs_defs phdr_def + | /* empty */ + ; + +/* A program header definition. */ +phdr_def: + string phdr_type phdr_info ';' + { script_add_phdr(closure, $1.value, $1.length, $2, &$3); } + ; + +/* A program header type. The GNU linker accepts a general expression + here, but that would be a pain because we would have to dig into + the expression structure. It's unlikely that anybody uses anything + other than a string or a number here, so that is all we expect. */ +phdr_type: + string + { $$ = script_phdr_string_to_type(closure, $1.value, $1.length); } + | INTEGER + { $$ = $1; } + ; + +/* Additional information for a program header. */ +phdr_info: + /* empty */ + { memset(&$$, 0, sizeof(struct Phdr_info)); } + | string phdr_info + { + $$ = $2; + if ($1.length == 7 && strncmp($1.value, "FILEHDR", 7) == 0) + $$.includes_filehdr = 1; + else + yyerror(closure, "PHDRS syntax error"); + } + | PHDRS phdr_info + { + $$ = $2; + $$.includes_phdrs = 1; + } + | string '(' INTEGER ')' phdr_info + { + $$ = $5; + if ($1.length == 5 && strncmp($1.value, "FLAGS", 5) == 0) + { + $$.is_flags_valid = 1; + $$.flags = $3; + } + else + yyerror(closure, "PHDRS syntax error"); + } + | AT '(' parse_exp ')' phdr_info + { + $$ = $5; + $$.load_address = $3; + } + ; + /* Set a symbol to a value. */ assignment: string '=' parse_exp |