diff options
| author | Andreas Schwab <schwab@suse.de> | 2002-04-19 17:12:59 +0000 |
|---|---|---|
| committer | David Edelsohn <dje@gcc.gnu.org> | 2002-04-19 13:12:59 -0400 |
| commit | 62a12b279567a085d7245af674b42bbe88a9f6e9 (patch) | |
| tree | 2e85cc466cd945f5bebc7ff57a852289e1b8e2fd | |
| parent | 1405141bc5d7d430de641f92dd8c2f3ebce27e3d (diff) | |
| download | gcc-62a12b279567a085d7245af674b42bbe88a9f6e9.zip gcc-62a12b279567a085d7245af674b42bbe88a9f6e9.tar.gz gcc-62a12b279567a085d7245af674b42bbe88a9f6e9.tar.bz2 | |
real.c: Allow sizeof (REAL_VALUE_TYPE) > 2*NE.
2002-04-19 Andreas Schwab <schwab@suse.de>
* real.c: Allow sizeof (REAL_VALUE_TYPE) > 2*NE.
(PUT_REAL): Restore old definition.
From-SVN: r52527
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/real.c | 17 |
2 files changed, 17 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cd0ffc7..febb90a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-04-19 Andreas Schwab <schwab@suse.de> + + * real.c: Allow sizeof (REAL_VALUE_TYPE) > 2*NE. + (PUT_REAL): Restore old definition. + 2002-04-19 Dan Nicolaescu <dann@godzilla.ics.uci.edu> Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at> @@ -209,7 +209,7 @@ typedef unsigned int UHItype __attribute__ ((mode (HI))); #endif /* Calculate the size of the generic "e" type. This always has - identical in-memory size and representation to REAL_VALUE_TYPE. + identical in-memory size to REAL_VALUE_TYPE. There are only two supported sizes: ten and six 16-bit words (160 or 96 bits). */ @@ -224,11 +224,13 @@ typedef unsigned int UHItype __attribute__ ((mode (HI))); # define MINDECEXP -4956 #endif -/* Fail compilation if 2*NE is not the appropriate size. */ - +/* Fail compilation if 2*NE is not the appropriate size. + If HOST_BITS_PER_WIDE_INT is 64, we're going to have padding + at the end of the array, because neither 96 nor 160 is + evenly divisible by 64. */ struct compile_test_dummy { char twice_NE_must_equal_sizeof_REAL_VALUE_TYPE - [(sizeof (REAL_VALUE_TYPE) == 2*NE) ? 1 : -1]; + [(sizeof (REAL_VALUE_TYPE) >= 2*NE) ? 1 : -1]; }; /* Construct macros to translate between REAL_VALUE_TYPE and e type. @@ -236,7 +238,12 @@ struct compile_test_dummy { A REAL_VALUE_TYPE is guaranteed to occupy contiguous locations in memory, with no holes. */ #define GET_REAL(r, e) memcpy ((e), (r), 2*NE) -#define PUT_REAL(e, r) memcpy ((r), (e), 2*NE) +#define PUT_REAL(e, r) \ + do { \ + memcpy (r, e, 2*NE); \ + if (2*NE < sizeof (*r)) \ + memset ((char *) (r) + 2*NE, 0, sizeof (*r) - 2*NE); \ + } while (0) /* Number of 16 bit words in internal format */ #define NI (NE+3) |