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, 10 deletions

diff --git a/gdb/rs6000-nat.c b/gdb/rs6000-nat.c
index f42847bfea..8f5d25cdb3 100644
--- a/gdb/rs6000-nat.c
+++ b/gdb/rs6000-nat.c
@@ -164,6 +164,7 @@ fetch_register (struct regcache *regcache, int regno)
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
   int addr[MAX_REGISTER_SIZE];
   int nr, isfloat;
+  pid_t pid = ptid_get_pid (regcache_get_ptid (regcache));
 
   /* Retrieved values may be -1, so infer errors from errno.  */
   errno = 0;
@@ -172,7 +173,7 @@ fetch_register (struct regcache *regcache, int regno)
 
   /* Floating-point registers.  */
   if (isfloat)
-    rs6000_ptrace32 (PT_READ_FPR, ptid_get_pid (inferior_ptid), addr, nr, 0);
+    rs6000_ptrace32 (PT_READ_FPR, pid, addr, nr, 0);
 
   /* Bogus register number.  */
   else if (nr < 0)
@@ -188,15 +189,13 @@ fetch_register (struct regcache *regcache, int regno)
   else
     {
       if (!ARCH64 ())
-	*addr = rs6000_ptrace32 (PT_READ_GPR, ptid_get_pid (inferior_ptid),
-				 (int *) nr, 0, 0);
+	*addr = rs6000_ptrace32 (PT_READ_GPR, pid, (int *) nr, 0, 0);
       else
 	{
 	  /* PT_READ_GPR requires the buffer parameter to point to long long,
 	     even if the register is really only 32 bits.  */
 	  long long buf;
-	  rs6000_ptrace64 (PT_READ_GPR, ptid_get_pid (inferior_ptid),
-			   nr, 0, &buf);
+	  rs6000_ptrace64 (PT_READ_GPR, pid, nr, 0, &buf);
 	  if (register_size (gdbarch, regno) == 8)
 	    memcpy (addr, &buf, 8);
 	  else
@@ -224,6 +223,7 @@ store_register (struct regcache *regcache, int regno)
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
   int addr[MAX_REGISTER_SIZE];
   int nr, isfloat;
+  pid_t pid = ptid_get_pid (regcache_get_ptid (regcache));
 
   /* Fetch the register's value from the register cache.  */
   regcache_raw_collect (regcache, regno, addr);
@@ -235,7 +235,7 @@ store_register (struct regcache *regcache, int regno)
 
   /* Floating-point registers.  */
   if (isfloat)
-    rs6000_ptrace32 (PT_WRITE_FPR, ptid_get_pid (inferior_ptid), addr, nr, 0);
+    rs6000_ptrace32 (PT_WRITE_FPR, pid, addr, nr, 0);
 
   /* Bogus register number.  */
   else if (nr < 0)
@@ -253,8 +253,7 @@ store_register (struct regcache *regcache, int regno)
          the register's value is passed by value, but for 64-bit inferiors,
 	 the address of a buffer containing the value is passed.  */
       if (!ARCH64 ())
-	rs6000_ptrace32 (PT_WRITE_GPR, ptid_get_pid (inferior_ptid),
-			 (int *) nr, *addr, 0);
+	rs6000_ptrace32 (PT_WRITE_GPR, pid, (int *) nr, *addr, 0);
       else
 	{
 	  /* PT_WRITE_GPR requires the buffer parameter to point to an 8-byte
@@ -264,8 +263,7 @@ store_register (struct regcache *regcache, int regno)
 	    memcpy (&buf, addr, 8);
 	  else
 	    buf = *addr;
-	  rs6000_ptrace64 (PT_WRITE_GPR, ptid_get_pid (inferior_ptid),
-			   nr, 0, &buf);
+	  rs6000_ptrace64 (PT_WRITE_GPR, pid, nr, 0, &buf);
 	}
     }