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* yyscript.y (file_cmd): Recognize EXTERN.

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(extern_name_list, extern_name_list_body): New nonterminals.
	* script.cc (script_add_extern): Define.
	* script-c.h (script_add_extern): Declare.
This commit is contained in:
Ian Lance Taylor
2009-03-24 19:08:37 +00:00
parent f6060a4d43
commit afc06bb828
4 changed files with 47 additions and 1 deletions
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22
gold/yyscript.y
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@@ -234,7 +234,8 @@ linker_script:
/* A command which may appear at top level of a linker script. */
file_cmd:
FORCE_COMMON_ALLOCATION
EXTERN '(' extern_name_list ')'
| FORCE_COMMON_ALLOCATION
{ script_set_common_allocation(closure, 1); }
| GROUP
{ script_start_group(closure); }
@@ -282,6 +283,25 @@ ignore_cmd:
OUTPUT_ARCH '(' string ')'
;
/* A list of external undefined symbols. We put the lexer into
expression mode so that commas separate names; this is what the GNU
linker does. */
extern_name_list:
{ script_push_lex_into_expression_mode(closure); }
extern_name_list_body
{ script_pop_lex_mode(closure); }
;
extern_name_list_body:
string
{ script_add_extern(closure, $1.value, $1.length); }
| extern_name_list_body string
{ script_add_extern(closure, $2.value, $2.length); }
| extern_name_list_body ',' string
{ script_add_extern(closure, $3.value, $3.length); }
;
/* A list of input file names. */
input_list:
input_list_element