diff options
| -rw-r--r-- | gdb/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/sparc64-tdep.c | 15 |
2 files changed, 19 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 9ffebe8..65db16f 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,9 @@ 2004-01-03 Mark Kettenis <kettenis@gnu.org> + * sparc64-tdep.c (sparc64_store_floating_fields): If TYPE is a + structure that has a single `float' member, store it in %f1 in + addition to %f0. + * sparc-sol2-nat.c: Add missing '\'. * sparc-tdep.c (sparc32_return_value): New function. diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c index 1e06ea5..bf3aeca 100644 --- a/gdb/sparc64-tdep.c +++ b/gdb/sparc64-tdep.c @@ -668,6 +668,21 @@ sparc64_store_floating_fields (struct regcache *regcache, struct type *type, sparc64_store_floating_fields (regcache, subtype, valbuf, element, subpos); } + + /* GCC has an interesting bug. If TYPE is a structure that has + a single `float' member, GCC doesn't treat it as a structure + at all, but rather as an ordinary `float' argument. This + argument will be stored in %f1, as required by the psABI. + However, as a member of a structure the psABI requires it to + be stored in. To appease GCC, if a structure has only a + single `float' member, we store its value in %f1 too. */ + if (TYPE_NFIELDS (type) == 1) + { + struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0)); + + if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4) + regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf); + } } } |