Use ptid from regcache in almost all remaining nat files

This patch contains almost all of the remaining changes needed to make
to_fetch_registers/to_store_registers/to_prepare_to_store independent of
inferior_ptid.  It contains only some "trivial" changes, the more
complicated ones are in separate patches.

gdb/ChangeLog:

	* i386-linux-nat.c (fetch_register, store_register,
	i386_linux_fetch_inferior_registers,
	i386_linux_store_inferior_registers): Use ptid from regcache.
	* ia64-linux-nat.c (ia64_linux_fetch_register,
	ia64_linux_store_register): Likewise.
	* inf-ptrace.c (inf_ptrace_fetch_register,
	inf_ptrace_store_register): Likewise.
	* m32r-linux-nat.c (m32r_linux_fetch_inferior_registers,
	m32r_linux_store_inferior_registers): Likewise.
	* m68k-bsd-nat.c (m68kbsd_fetch_inferior_registers,
	m68kbsd_store_inferior_registers): Likewise.
	* m68k-linux-nat.c (fetch_register, store_register,
	m68k_linux_fetch_inferior_registers,
	m68k_linux_store_inferior_registers): Likewise.
	* m88k-bsd-nat.c (m88kbsd_fetch_inferior_registers,
	m88kbsd_store_inferior_registers): Likewise.
	* mips-fbsd-nat.c (mips_fbsd_fetch_inferior_registers,
	mips_fbsd_store_inferior_registers): Likewise.
	* mips-linux-nat.c (mips64_linux_regsets_fetch_registers,
	mips64_linux_regsets_store_registers): Likewise.
	* mips-nbsd-nat.c (mipsnbsd_fetch_inferior_registers,
	mipsnbsd_store_inferior_registers): Likewise.
	* mips-obsd-nat.c (mips64obsd_fetch_inferior_registers,
	mips64obsd_store_inferior_registers): Likewise.
	* nto-procfs.c (procfs_fetch_registers, procfs_store_registers):
	Likewise.
	* ppc-fbsd-nat.c (ppcfbsd_fetch_inferior_registers,
	ppcfbsd_store_inferior_registers): Likewise.
	* ppc-linux-nat.c (ppc_linux_fetch_inferior_registers,
	ppc_linux_store_inferior_registers): Likewise.
	* ppc-nbsd-nat.c (ppcnbsd_fetch_inferior_registers,
	ppcnbsd_store_inferior_registers): Likewise.
	* ppc-obsd-nat.c (ppcobsd_fetch_registers,
	ppcobsd_store_registers): Likewise.
	* procfs.c (procfs_fetch_registers, procfs_store_registers):
	Likewise.
	* ravenscar-thread.c (ravenscar_fetch_registers,
	ravenscar_store_registers, ravenscar_prepare_to_store):
	Likewise.
	* record-btrace.c (record_btrace_fetch_registers,
	record_btrace_store_registers, record_btrace_prepare_to_store):
	Likewise.
	* remote-sim.c (gdbsim_fetch_register, gdbsim_store_register):
	Lookup inferior using ptid from regcache, instead of
	current_inferior.
	* remote.c (remote_fetch_registers, remote_store_registers): Use
	ptid from regcache.
	* rs6000-nat.c (fetch_register, store_register): Likewise.
	* s390-linux-nat.c (s390_linux_fetch_inferior_registers,
	s390_linux_store_inferior_registers): Likewise.
	* sh-nbsd-nat.c (shnbsd_fetch_inferior_registers,
	shnbsd_store_inferior_registers): Likewise.
	* sol-thread.c (sol_thread_fetch_registers,
	sol_thread_store_registers): Likewise.
	* sparc-nat.c (sparc_fetch_inferior_registers,
	sparc_store_inferior_registers): Likewise.
	* tilegx-linux-nat.c (fetch_inferior_registers,
	store_inferior_registers): Likewise.
	* vax-bsd-nat.c (vaxbsd_fetch_inferior_registers,
	vaxbsd_store_inferior_registers): Likewise.
	* xtensa-linux-nat.c (fetch_gregs, store_gregs, fetch_xtregs,
	store_xtregs): Likewise.

1 files changed, 8 insertions, 6 deletions

diff --git a/gdb/procfs.c b/gdb/procfs.c
index 2269016..b860f16 100644
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -3219,15 +3219,16 @@ procfs_fetch_registers (struct target_ops *ops,
 {
   gdb_gregset_t *gregs;
   procinfo *pi;
-  int pid = ptid_get_pid (inferior_ptid);
-  int tid = ptid_get_lwp (inferior_ptid);
+  ptid_t ptid = regcache_get_ptid (regcache);
+  int pid = ptid_get_pid (ptid);
+  int tid = ptid_get_lwp (ptid);
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
 
   pi = find_procinfo_or_die (pid, tid);
 
   if (pi == NULL)
     error (_("procfs: fetch_registers failed to find procinfo for %s"),
-	   target_pid_to_str (inferior_ptid));
+	   target_pid_to_str (ptid));
 
   gregs = proc_get_gregs (pi);
   if (gregs == NULL)
@@ -3268,15 +3269,16 @@ procfs_store_registers (struct target_ops *ops,
 {
   gdb_gregset_t *gregs;
   procinfo *pi;
-  int pid = ptid_get_pid (inferior_ptid);
-  int tid = ptid_get_lwp (inferior_ptid);
+  ptid_t ptid = regcache_get_ptid (regcache);
+  int pid = ptid_get_pid (ptid);
+  int tid = ptid_get_lwp (ptid);
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
 
   pi = find_procinfo_or_die (pid, tid);
 
   if (pi == NULL)
     error (_("procfs: store_registers: failed to find procinfo for %s"),
-	   target_pid_to_str (inferior_ptid));
+	   target_pid_to_str (ptid));
 
   gregs = proc_get_gregs (pi);
   if (gregs == NULL)