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authorTimothy Wall <twall@alum.mit.edu>2000-03-26 14:47:33 +0000
committerTimothy Wall <twall@alum.mit.edu>2000-03-26 14:47:33 +0000
commit9f10757c407c9946029436682ae554f9739fa62d (patch)
tree3c3ca83d45d665e4dba0ca6539967296b22b7ced /gas/macro.h
parentd0b472203592cbd847b4089b73b64e6782f07922 (diff)
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Add macro handling extensions and line substitution support.
Diffstat (limited to 'gas/macro.h')
-rw-r--r--gas/macro.h39
1 files changed, 38 insertions, 1 deletions
diff --git a/gas/macro.h b/gas/macro.h
index cdeea4a..9c61acd 100644
--- a/gas/macro.h
+++ b/gas/macro.h
@@ -28,6 +28,42 @@
#include "ansidecl.h"
#include "sb.h"
+/* Structures used to store macros.
+
+ Each macro knows its name and included text. It gets built with a
+ list of formal arguments, and also keeps a hash table which points
+ into the list to speed up formal search. Each formal knows its
+ name and its default value. Each time the macro is expanded, the
+ formals get the actual values attatched to them. */
+
+/* describe the formal arguments to a macro */
+
+typedef struct formal_struct
+ {
+ struct formal_struct *next; /* next formal in list */
+ sb name; /* name of the formal */
+ sb def; /* the default value */
+ sb actual; /* the actual argument (changed on each expansion) */
+ int index; /* the index of the formal 0..formal_count-1 */
+ }
+formal_entry;
+
+/* Other values found in the index field of a formal_entry. */
+#define QUAL_INDEX (-1)
+#define NARG_INDEX (-2)
+#define LOCAL_INDEX (-3)
+
+/* describe the macro. */
+
+typedef struct macro_struct
+ {
+ sb sub; /* substitution text. */
+ int formal_count; /* number of formal args. */
+ formal_entry *formals; /* pointer to list of formal_structs */
+ struct hash_control *formal_hash; /* hash table of formals. */
+ }
+macro_entry;
+
/* Whether any macros have been defined. */
extern int macro_defined;
@@ -45,7 +81,8 @@ extern void macro_mri_mode PARAMS ((int));
extern const char *define_macro
PARAMS ((int idx, sb *in, sb *label, int (*get_line) PARAMS ((sb *)),
const char **namep));
-extern int check_macro PARAMS ((const char *, sb *, int, const char **));
+extern int check_macro PARAMS ((const char *, sb *, int, const char **,
+ macro_entry **));
extern void delete_macro PARAMS ((const char *));
extern const char *expand_irp
PARAMS ((int, int, sb *, sb *, int (*) PARAMS ((sb *)), int));