diff options
| author | Jim Wilson <wilson@gcc.gnu.org> | 1994-02-27 14:46:49 -0800 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1994-02-27 14:46:49 -0800 |
| commit | 3bd98790b02cccc5276f6def254c5dfa3e9dba36 (patch) | |
| tree | a5bc6bfa71ae305b9adfe4f4293f5cacbd8a9bcf /gcc/expmed.c | |
| parent | a5f00f07f195bb0012629388da827814fc0a11fc (diff) | |
| download | gcc-3bd98790b02cccc5276f6def254c5dfa3e9dba36.zip gcc-3bd98790b02cccc5276f6def254c5dfa3e9dba36.tar.gz gcc-3bd98790b02cccc5276f6def254c5dfa3e9dba36.tar.bz2 | |
(store_fixed_bit_field): Adjust BITPOS so that it
fits inside MODE before adjusting OFFSET to get an aligned address.
From-SVN: r6658
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index b6269c6..5a06dbf 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -569,6 +569,16 @@ store_fixed_bit_field (op0, offset, bitsize, bitpos, value, struct_align) total_bits = GET_MODE_BITSIZE (mode); + /* Make sure bitpos is valid for the chosen mode. Adjust BITPOS to + be be in the range 0 to total_bits-1, and put any excess bytes in + OFFSET. */ + if (bitpos >= total_bits) + { + offset += (bitpos / total_bits) * (total_bits / BITS_PER_UNIT); + bitpos -= ((bitpos / total_bits) * (total_bits / BITS_PER_UNIT) + * BITS_PER_UNIT); + } + /* Get ref to an aligned byte, halfword, or word containing the field. Adjust BITPOS to be position within a word, and OFFSET to be the offset of that word. |