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| author | Yao Qi <yao.qi@linaro.org> | 2017-04-21 14:59:27 +0100 |
|---|---|---|
| committer | Yao Qi <yao.qi@linaro.org> | 2017-04-21 14:59:27 +0100 |
| commit | 4daf993d4d4686f2707810af3725038d2f289bbb (patch) | |
| tree | 0497be2f60f13333a6707d01376af1c6ec4791bb /gdb | |
| parent | 3ab87b688320e02db1bb7ed4bd45323d57737c77 (diff) | |
| download | gdb-4daf993d4d4686f2707810af3725038d2f289bbb.zip gdb-4daf993d4d4686f2707810af3725038d2f289bbb.tar.gz gdb-4daf993d4d4686f2707810af3725038d2f289bbb.tar.bz2 | |
Simplify regcache_restore
This patches removes the 2nd argument of regcache_restore, because it
is only called by regcache_cpy. In regcache_cpy, if regcache_restore
is called, dst is not readonly, but src is readonly. So this patch
adds an assert that src is readonly in regcache_restore.
regcache_cook_read read everything from a readonly regcache cache
(src)'s register_buffer, and register status is from ->register_status.
gdb:
2017-04-21 Yao Qi <yao.qi@linaro.org>
* regcache.c (regcache_restore): Remove argument 2. Replace
argument 3 with regcache. Get register status from
src->register_status and get register contents from
register_buffer (src, regnum).
(regcache_cpy): Update.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 8 | ||||
| -rw-r--r-- | gdb/regcache.c | 15 |
2 files changed, 13 insertions, 10 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index b30e63f..cb6db1f 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,11 @@ +2017-04-21 Yao Qi <yao.qi@linaro.org> + + * regcache.c (regcache_restore): Remove argument 2. Replace + argument 3 with regcache. Get register status from + src->register_status and get register contents from + register_buffer (src, regnum). + (regcache_cpy): Update. + 2017-04-19 Pedro Alves <palves@redhat.com> * gdbthread.h (thread): Add missing closing parenthesis in diff --git a/gdb/regcache.c b/gdb/regcache.c index 37bc2f0..41c23a5 100644 --- a/gdb/regcache.c +++ b/gdb/regcache.c @@ -374,17 +374,15 @@ regcache_save (struct regcache *dst, regcache_cooked_read_ftype *cooked_read, } static void -regcache_restore (struct regcache *dst, - regcache_cooked_read_ftype *cooked_read, - void *cooked_read_context) +regcache_restore (struct regcache *dst, struct regcache *src) { struct gdbarch *gdbarch = dst->descr->gdbarch; - gdb_byte buf[MAX_REGISTER_SIZE]; int regnum; /* The dst had better not be read-only. If it is, the `restore' doesn't make much sense. */ gdb_assert (!dst->readonly_p); + gdb_assert (src->readonly_p); /* Copy over any registers, being careful to only restore those that were both saved and need to be restored. The full [0 .. gdbarch_num_regs + gdbarch_num_pseudo_regs) range is checked since some architectures need @@ -393,11 +391,8 @@ regcache_restore (struct regcache *dst, { if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup)) { - enum register_status status; - - status = cooked_read (cooked_read_context, regnum, buf); - if (status == REG_VALID) - regcache_cooked_write (dst, regnum, buf); + if (src->register_status[regnum] == REG_VALID) + regcache_cooked_write (dst, regnum, register_buffer (src, regnum)); } } } @@ -424,7 +419,7 @@ regcache_cpy (struct regcache *dst, struct regcache *src) if (!src->readonly_p) regcache_save (dst, do_cooked_read, src); else if (!dst->readonly_p) - regcache_restore (dst, do_cooked_read, src); + regcache_restore (dst, src); else regcache_cpy_no_passthrough (dst, src); } |