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-rw-r--r--gdb/doublest.c151
1 files changed, 88 insertions, 63 deletions
diff --git a/gdb/doublest.c b/gdb/doublest.c
index af635f2..287c9ad 100644
--- a/gdb/doublest.c
+++ b/gdb/doublest.c
@@ -104,10 +104,10 @@ get_field (unsigned char *data, enum floatformat_byteorders order,
FROM is the address of the extended float.
Store the DOUBLEST in *TO. */
-void
-floatformat_to_doublest (const struct floatformat *fmt,
- const void *from,
- DOUBLEST *to)
+static void
+convert_floatformat_to_doublest (const struct floatformat *fmt,
+ const void *from,
+ DOUBLEST *to)
{
unsigned char *ufrom = (unsigned char *) from;
DOUBLEST dto;
@@ -325,10 +325,10 @@ ldfrexp (long double value, int *eptr)
and store where TO points. Neither FROM nor TO have any alignment
restrictions. */
-void
-floatformat_from_doublest (CONST struct floatformat *fmt,
- const DOUBLEST *from,
- void *to)
+static void
+convert_doublest_to_floatformat (CONST struct floatformat *fmt,
+ const DOUBLEST *from,
+ void *to)
{
DOUBLEST dfrom;
int exponent;
@@ -533,60 +533,102 @@ floatformat_mantissa (const struct floatformat *fmt, char *val)
-/* Extract a floating-point number from a target-order byte-stream at ADDR.
- Returns the value as type DOUBLEST.
+/* Convert TO/FROM target to the hosts DOUBLEST floating-point format.
+
+ If the host and target formats agree, we just copy the raw data
+ into the appropriate type of variable and return, letting the host
+ increase precision as necessary. Otherwise, we call the conversion
+ routine and let it do the dirty work. */
+
+#ifndef HOST_FLOAT_FORMAT
+#define HOST_FLOAT_FORMAT 0
+#endif
+#ifndef HOST_DOUBLE_FORMAT
+#define HOST_DOUBLE_FORMAT 0
+#endif
+#ifndef HOST_LONG_DOUBLE_FORMAT
+#define HOST_LONG_DOUBLE_FORMAT 0
+#endif
+
+static const struct floatformat *host_float_format = HOST_FLOAT_FORMAT;
+static const struct floatformat *host_double_format = HOST_DOUBLE_FORMAT;
+static const struct floatformat *host_long_double_format = HOST_LONG_DOUBLE_FORMAT;
+
+void
+floatformat_to_doublest (const struct floatformat *fmt,
+ const void *in, DOUBLEST *out)
+{
+ gdb_assert (fmt != NULL);
+ if (fmt == host_float_format)
+ {
+ float val;
+ memcpy (&val, in, sizeof (val));
+ *out = val;
+ }
+ else if (fmt == host_double_format)
+ {
+ double val;
+ memcpy (&val, in, sizeof (val));
+ *out = val;
+ }
+ else if (fmt == host_long_double_format)
+ {
+ long double val;
+ memcpy (&val, in, sizeof (val));
+ *out = val;
+ }
+ else
+ convert_floatformat_to_doublest (fmt, in, out);
+}
+
+void
+floatformat_from_doublest (const struct floatformat *fmt,
+ const DOUBLEST *in, void *out)
+{
+ gdb_assert (fmt != NULL);
+ if (fmt == host_float_format)
+ {
+ float val = *in;
+ memcpy (out, &val, sizeof (val));
+ }
+ else if (fmt == host_double_format)
+ {
+ double val = *in;
+ memcpy (out, &val, sizeof (val));
+ }
+ else if (fmt == host_long_double_format)
+ {
+ long double val = *in;
+ memcpy (out, &val, sizeof (val));
+ }
+ else
+ convert_doublest_to_floatformat (fmt, in, out);
+}
- If the host and target formats agree, we just copy the raw data into the
- appropriate type of variable and return, letting the host increase precision
- as necessary. Otherwise, we call the conversion routine and let it do the
- dirty work. */
+
+/* Extract/store a floating-point number from a target-order
+ byte-stream at ADDR. Returns the value as type DOUBLEST. */
DOUBLEST
extract_floating (const void *addr, int len)
{
DOUBLEST dretval;
-
if (len * TARGET_CHAR_BIT == TARGET_FLOAT_BIT)
{
- if (HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT)
- {
- float retval;
-
- memcpy (&retval, addr, sizeof (retval));
- return retval;
- }
- else
- floatformat_to_doublest (TARGET_FLOAT_FORMAT, addr, &dretval);
+ floatformat_to_doublest (TARGET_FLOAT_FORMAT, addr, &dretval);
}
else if (len * TARGET_CHAR_BIT == TARGET_DOUBLE_BIT)
{
- if (HOST_DOUBLE_FORMAT == TARGET_DOUBLE_FORMAT)
- {
- double retval;
-
- memcpy (&retval, addr, sizeof (retval));
- return retval;
- }
- else
- floatformat_to_doublest (TARGET_DOUBLE_FORMAT, addr, &dretval);
+ floatformat_to_doublest (TARGET_DOUBLE_FORMAT, addr, &dretval);
}
else if (len * TARGET_CHAR_BIT == TARGET_LONG_DOUBLE_BIT)
{
- if (HOST_LONG_DOUBLE_FORMAT == TARGET_LONG_DOUBLE_FORMAT)
- {
- DOUBLEST retval;
-
- memcpy (&retval, addr, sizeof (retval));
- return retval;
- }
- else
- floatformat_to_doublest (TARGET_LONG_DOUBLE_FORMAT, addr, &dretval);
+ floatformat_to_doublest (TARGET_LONG_DOUBLE_FORMAT, addr, &dretval);
}
else
{
error ("Can't deal with a floating point number of %d bytes.", len);
}
-
return dretval;
}
@@ -595,32 +637,15 @@ store_floating (void *addr, int len, DOUBLEST val)
{
if (len * TARGET_CHAR_BIT == TARGET_FLOAT_BIT)
{
- if (HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT)
- {
- float floatval = val;
-
- memcpy (addr, &floatval, sizeof (floatval));
- }
- else
- floatformat_from_doublest (TARGET_FLOAT_FORMAT, &val, addr);
+ floatformat_from_doublest (TARGET_FLOAT_FORMAT, &val, addr);
}
else if (len * TARGET_CHAR_BIT == TARGET_DOUBLE_BIT)
{
- if (HOST_DOUBLE_FORMAT == TARGET_DOUBLE_FORMAT)
- {
- double doubleval = val;
-
- memcpy (addr, &doubleval, sizeof (doubleval));
- }
- else
- floatformat_from_doublest (TARGET_DOUBLE_FORMAT, &val, addr);
+ floatformat_from_doublest (TARGET_DOUBLE_FORMAT, &val, addr);
}
else if (len * TARGET_CHAR_BIT == TARGET_LONG_DOUBLE_BIT)
{
- if (HOST_LONG_DOUBLE_FORMAT == TARGET_LONG_DOUBLE_FORMAT)
- memcpy (addr, &val, sizeof (val));
- else
- floatformat_from_doublest (TARGET_LONG_DOUBLE_FORMAT, &val, addr);
+ floatformat_from_doublest (TARGET_LONG_DOUBLE_FORMAT, &val, addr);
}
else
{