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bsd-uthread: Use ptid from regcache instead of inferior_ptid

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This is one of the rare to_fetch/store_registers implementations that will
still rely (for now) on inferior_ptid (because of the memory read/write
operations).  We therefore have to add a save/restore of inferior_ptid.  We'll
be able to remove it when we make the memory operations accept the ptid as a
parameter.

gdb/ChangeLog:

	* bsd-uthread.c (bsd_uthread_fetch_registers,
	bsd_uthread_store_registers): Use ptid from regcache, set and
	restore inferior_ptid.
This commit is contained in:
Simon Marchi 2017-03-17 13:55:51 -04:00 committed by Simon Marchi
parent 9ac8a7c281
commit 317cd4925a
2 changed files with 24 additions and 2 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2017-03-17 Simon Marchi <simon.marchi@polymtl.ca>
* bsd-uthread.c (bsd_uthread_fetch_registers,
bsd_uthread_store_registers): Use ptid from regcache, set and
restore inferior_ptid.
2017-03-17 Simon Marchi <simon.marchi@polymtl.ca>
* arm-nbsd-nat.c (fetch_register, fetch_regs, fetch_fp_register,

20
gdb/bsd-uthread.c
View File

@ -290,9 +290,15 @@ bsd_uthread_fetch_registers (struct target_ops *ops,
struct gdbarch *gdbarch = get_regcache_arch (regcache);
struct bsd_uthread_ops *uthread_ops
= (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
CORE_ADDR addr = ptid_get_tid (inferior_ptid);
ptid_t ptid = regcache_get_ptid (regcache);
CORE_ADDR addr = ptid_get_tid (ptid);
struct target_ops *beneath = find_target_beneath (ops);
CORE_ADDR active_addr;
struct cleanup *cleanup = save_inferior_ptid ();
/* We are doing operations (e.g. reading memory) that rely on
inferior_ptid. */
inferior_ptid = ptid;
/* Always fetch the appropriate registers from the layer beneath. */
beneath->to_fetch_registers (beneath, regcache, regnum);
@ -309,6 +315,8 @@ bsd_uthread_fetch_registers (struct target_ops *ops,
uthread_ops->supply_uthread (regcache, regnum,
addr + bsd_uthread_thread_ctx_offset);
}
do_cleanups (cleanup);
}
static void
@ -319,8 +327,14 @@ bsd_uthread_store_registers (struct target_ops *ops,
struct bsd_uthread_ops *uthread_ops
= (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
struct target_ops *beneath = find_target_beneath (ops);
CORE_ADDR addr = ptid_get_tid (inferior_ptid);
ptid_t ptid = regcache_get_ptid (regcache);
CORE_ADDR addr = ptid_get_tid (ptid);
CORE_ADDR active_addr;
struct cleanup *cleanup = save_inferior_ptid ();
/* We are doing operations (e.g. reading memory) that rely on
inferior_ptid. */
inferior_ptid = ptid;
active_addr = bsd_uthread_read_memory_address (bsd_uthread_thread_run_addr);
if (addr != 0 && addr != active_addr)
@ -335,6 +349,8 @@ bsd_uthread_store_registers (struct target_ops *ops,
request to the layer beneath. */
beneath->to_store_registers (beneath, regcache, regnum);
}
do_cleanups (cleanup);
}
static ptid_t