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-rw-r--r--gas/gasp.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/gas/gasp.c b/gas/gasp.c
index 73b4d88..dc93622 100644
--- a/gas/gasp.c
+++ b/gas/gasp.c
@@ -48,6 +48,7 @@ suitable for gas to consume.
#include "config.h"
#include "bin-bugs.h"
+#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <getopt.h>
@@ -66,6 +67,7 @@ extern char *malloc ();
#include "sb.h"
#include "macro.h"
#include "asintl.h"
+#include "xregex.h"
char *program_version = "1.2";
@@ -227,6 +229,8 @@ static void hash_add_to_string_table PARAMS ((hash_table *, sb *, sb *, int));
static void hash_add_to_int_table PARAMS ((hash_table *, sb *, int));
static hash_entry *hash_lookup PARAMS ((hash_table *, sb *));
static void checkconst PARAMS ((int, exp_t *));
+static int is_flonum PARAMS ((int, sb *));
+static int chew_flonum PARAMS ((int, sb *, sb *));
static int sb_strtol PARAMS ((int, sb *, int, int *));
static int level_0 PARAMS ((int, sb *, exp_t *));
static int level_1 PARAMS ((int, sb *, exp_t *));
@@ -522,6 +526,62 @@ checkconst (op, term)
}
}
+/* Chew the flonum from the string starting at idx. Adjust idx to
+ point to the next character after the flonum. */
+
+static int
+chew_flonum (idx, string, out)
+ int idx;
+ sb *string;
+ sb *out;
+{
+ sb buf;
+ regex_t reg;
+ regmatch_t match;
+
+ /* Duplicate and null terminate `string'. */
+ sb_new (&buf);
+ sb_add_sb (&buf, string);
+ sb_add_char (&buf, '\0');
+
+ if (regcomp (&reg, "([0-9]*\\.[0-9]+([eE][+-]?[0-9]+)?)", REG_EXTENDED) != 0)
+ return idx;
+ if (regexec (&reg, &buf.ptr[idx], 1, &match, 0) != 0)
+ return idx;
+
+ /* Copy the match to the output. */
+ assert (match.rm_eo >= match.rm_so);
+ sb_add_buffer (out, &buf.ptr[idx], match.rm_eo - match.rm_so);
+
+ sb_kill (&buf);
+ regfree (&reg);
+ idx += match.rm_eo;
+ return idx;
+}
+
+static int
+is_flonum (idx, string)
+ int idx;
+ sb *string;
+{
+ sb buf;
+ regex_t reg;
+ int rc;
+
+ /* Duplicate and null terminate `string'. */
+ sb_new (&buf);
+ sb_add_sb (&buf, string);
+ sb_add_char (&buf, '\0');
+
+ if (regcomp (&reg, "^[0-9]*\\.[0-9]+([eE][+-]?[0-9]+)?", REG_EXTENDED) != 0)
+ return 0;
+
+ rc = regexec (&reg, &buf.ptr[idx], 0, NULL, 0);
+ sb_kill (&buf);
+ regfree (&reg);
+ return (rc == 0);
+}
+
/* Turn the number in string at idx into a number of base, fill in
ptr, and return the index of the first character not in the number. */
@@ -1132,6 +1192,10 @@ change_base (idx, in, out)
idx++;
}
}
+ else if (is_flonum (idx, in))
+ {
+ idx = chew_flonum (idx, in, out);
+ }
else if (ISDIGIT (in->ptr[idx]))
{
int value;