diff mbox

Use ptid from regcache instead of inferior_ptid.

Message ID

20170404190401.38028-1-jhb@FreeBSD.org

State

New

Headers

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Sender: gdb-patches-owner@sourceware.org
From: John Baldwin <jhb@FreeBSD.org>
To: gdb-patches@sourceware.org
Subject: [PATCH] Use ptid from regcache instead of inferior_ptid.
Date: Tue,  4 Apr 2017 12:04:01 -0700
Message-Id: <20170404190401.38028-1-jhb@FreeBSD.org>

Commit Message

John Baldwin April 4, 2017, 7:04 p.m. UTC

gdb/ChangeLog:

	* amd64-bsd-nat.c (amd64bsd_fetch_inferior_registers,
	amd64bsd_store_inferior_registers): Use ptid from regcache.
---
 gdb/ChangeLog       |  5 +++++
 gdb/amd64-bsd-nat.c | 32 ++++++++++++++------------------
 2 files changed, 19 insertions(+), 18 deletions(-)

Comments

Simon Marchi April 4, 2017, 7:29 p.m. UTC | #1

On 2017-04-04 15:04, John Baldwin wrote:
> gdb/ChangeLog:
> 
> 	* amd64-bsd-nat.c (amd64bsd_fetch_inferior_registers,
> 	amd64bsd_store_inferior_registers): Use ptid from regcache.
> ---
>  gdb/ChangeLog       |  5 +++++
>  gdb/amd64-bsd-nat.c | 32 ++++++++++++++------------------
>  2 files changed, 19 insertions(+), 18 deletions(-)
> 
> diff --git a/gdb/ChangeLog b/gdb/ChangeLog
> index fc8dbe18da..259acca1ce 100644
> --- a/gdb/ChangeLog
> +++ b/gdb/ChangeLog
> @@ -1,3 +1,8 @@
> +2017-04-04  John Baldwin  <jhb@FreeBSD.org>
> +
> +	* amd64-bsd-nat.c (amd64bsd_fetch_inferior_registers,
> +	amd64bsd_store_inferior_registers): Use ptid from regcache.
> +
>  2017-04-04  Simon Marchi  <simon.marchi@polymtl.ca>
> 
>  	* remote.c (set_general_thread, set_continue_thread): Use ptid_t
> diff --git a/gdb/amd64-bsd-nat.c b/gdb/amd64-bsd-nat.c
> index 5678e94d11..ca61a3551b 100644
> --- a/gdb/amd64-bsd-nat.c
> +++ b/gdb/amd64-bsd-nat.c
> @@ -43,13 +43,13 @@ amd64bsd_fetch_inferior_registers (struct 
> target_ops *ops,
>  				   struct regcache *regcache, int regnum)
>  {
>    struct gdbarch *gdbarch = get_regcache_arch (regcache);
> +  pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
> 
>    if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, 
> regnum))
>      {
>        struct reg regs;
> 
> -      if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid),
> -		  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> +      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
>  	perror_with_name (_("Couldn't get registers"));
> 
>        amd64_supply_native_gregset (regcache, &regs, -1);
> @@ -66,8 +66,8 @@ amd64bsd_fetch_inferior_registers (struct target_ops 
> *ops,
>        if (x86bsd_xsave_len != 0)
>  	{
>  	  xstateregs = alloca (x86bsd_xsave_len);
> -	  if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid),
> -		      (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
> +	  if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
> +	      == -1)
>  	    perror_with_name (_("Couldn't get extended state status"));
> 
>  	  amd64_supply_xsave (regcache, -1, xstateregs);
> @@ -75,8 +75,7 @@ amd64bsd_fetch_inferior_registers (struct target_ops 
> *ops,
>  	}
>  #endif
> 
> -      if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid),
> -		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
> +      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == 
> -1)
>  	perror_with_name (_("Couldn't get floating point status"));
> 
>        amd64_supply_fxsave (regcache, -1, &fpregs);
> @@ -91,19 +90,18 @@ amd64bsd_store_inferior_registers (struct 
> target_ops *ops,
>  				   struct regcache *regcache, int regnum)
>  {
>    struct gdbarch *gdbarch = get_regcache_arch (regcache);
> +  pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
> 
>    if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, 
> regnum))
>      {
>        struct reg regs;
> 
> -      if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid),
> -                  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> +      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
>          perror_with_name (_("Couldn't get registers"));
> 
>        amd64_collect_native_gregset (regcache, &regs, regnum);
> 
> -      if (ptrace (PT_SETREGS, get_ptrace_pid (inferior_ptid),
> -	          (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> +      if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
>          perror_with_name (_("Couldn't write registers"));
> 
>        if (regnum != -1)
> @@ -119,27 +117,25 @@ amd64bsd_store_inferior_registers (struct 
> target_ops *ops,
>        if (x86bsd_xsave_len != 0)
>  	{
>  	  xstateregs = alloca (x86bsd_xsave_len);
> -	  if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid),
> -		      (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
> +	  if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
> +	      == -1)
>  	    perror_with_name (_("Couldn't get extended state status"));
> 
>  	  amd64_collect_xsave (regcache, regnum, xstateregs, 0);
> 
> -	  if (ptrace (PT_SETXSTATE, get_ptrace_pid (inferior_ptid),
> -		      (PTRACE_TYPE_ARG3) xstateregs, x86bsd_xsave_len) == -1)
> +	  if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs,
> +		      x86bsd_xsave_len) == -1)
>  	    perror_with_name (_("Couldn't write extended state status"));
>  	  return;
>  	}
>  #endif
> 
> -      if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid),
> -		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
> +      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == 
> -1)
>  	perror_with_name (_("Couldn't get floating point status"));
> 
>        amd64_collect_fxsave (regcache, regnum, &fpregs);
> 
> -      if (ptrace (PT_SETFPREGS, get_ptrace_pid (inferior_ptid),
> -		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
> +      if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == 
> -1)
>  	perror_with_name (_("Couldn't write floating point status"));
>      }
> 

Whoops, looks like an oversight on my part.

Thanks!

John Baldwin April 4, 2017, 8:57 p.m. UTC | #2

On Tuesday, April 04, 2017 03:29:29 PM Simon Marchi wrote:
> On 2017-04-04 15:04, John Baldwin wrote:
> > gdb/ChangeLog:
> > 
> > 	* amd64-bsd-nat.c (amd64bsd_fetch_inferior_registers,
> > 	amd64bsd_store_inferior_registers): Use ptid from regcache.
> > ---
> >  gdb/ChangeLog       |  5 +++++
> >  gdb/amd64-bsd-nat.c | 32 ++++++++++++++------------------
> >  2 files changed, 19 insertions(+), 18 deletions(-)
> > 
> > diff --git a/gdb/ChangeLog b/gdb/ChangeLog
> > index fc8dbe18da..259acca1ce 100644
> > --- a/gdb/ChangeLog
> > +++ b/gdb/ChangeLog
> > @@ -1,3 +1,8 @@
> > +2017-04-04  John Baldwin  <jhb@FreeBSD.org>
> > +
> > +	* amd64-bsd-nat.c (amd64bsd_fetch_inferior_registers,
> > +	amd64bsd_store_inferior_registers): Use ptid from regcache.
> > +
> >  2017-04-04  Simon Marchi  <simon.marchi@polymtl.ca>
> > 
> >  	* remote.c (set_general_thread, set_continue_thread): Use ptid_t
> > diff --git a/gdb/amd64-bsd-nat.c b/gdb/amd64-bsd-nat.c
> > index 5678e94d11..ca61a3551b 100644
> > --- a/gdb/amd64-bsd-nat.c
> > +++ b/gdb/amd64-bsd-nat.c
> > @@ -43,13 +43,13 @@ amd64bsd_fetch_inferior_registers (struct 
> > target_ops *ops,
> >  				   struct regcache *regcache, int regnum)
> >  {
> >    struct gdbarch *gdbarch = get_regcache_arch (regcache);
> > +  pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
> > 
> >    if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, 
> > regnum))
> >      {
> >        struct reg regs;
> > 
> > -      if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid),
> > -		  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> > +      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> >  	perror_with_name (_("Couldn't get registers"));
> > 
> >        amd64_supply_native_gregset (regcache, &regs, -1);
> > @@ -66,8 +66,8 @@ amd64bsd_fetch_inferior_registers (struct target_ops 
> > *ops,
> >        if (x86bsd_xsave_len != 0)
> >  	{
> >  	  xstateregs = alloca (x86bsd_xsave_len);
> > -	  if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid),
> > -		      (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
> > +	  if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
> > +	      == -1)
> >  	    perror_with_name (_("Couldn't get extended state status"));
> > 
> >  	  amd64_supply_xsave (regcache, -1, xstateregs);
> > @@ -75,8 +75,7 @@ amd64bsd_fetch_inferior_registers (struct target_ops 
> > *ops,
> >  	}
> >  #endif
> > 
> > -      if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid),
> > -		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
> > +      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == 
> > -1)
> >  	perror_with_name (_("Couldn't get floating point status"));
> > 
> >        amd64_supply_fxsave (regcache, -1, &fpregs);
> > @@ -91,19 +90,18 @@ amd64bsd_store_inferior_registers (struct 
> > target_ops *ops,
> >  				   struct regcache *regcache, int regnum)
> >  {
> >    struct gdbarch *gdbarch = get_regcache_arch (regcache);
> > +  pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
> > 
> >    if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, 
> > regnum))
> >      {
> >        struct reg regs;
> > 
> > -      if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid),
> > -                  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> > +      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> >          perror_with_name (_("Couldn't get registers"));
> > 
> >        amd64_collect_native_gregset (regcache, &regs, regnum);
> > 
> > -      if (ptrace (PT_SETREGS, get_ptrace_pid (inferior_ptid),
> > -	          (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> > +      if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
> >          perror_with_name (_("Couldn't write registers"));
> > 
> >        if (regnum != -1)
> > @@ -119,27 +117,25 @@ amd64bsd_store_inferior_registers (struct 
> > target_ops *ops,
> >        if (x86bsd_xsave_len != 0)
> >  	{
> >  	  xstateregs = alloca (x86bsd_xsave_len);
> > -	  if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid),
> > -		      (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
> > +	  if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
> > +	      == -1)
> >  	    perror_with_name (_("Couldn't get extended state status"));
> > 
> >  	  amd64_collect_xsave (regcache, regnum, xstateregs, 0);
> > 
> > -	  if (ptrace (PT_SETXSTATE, get_ptrace_pid (inferior_ptid),
> > -		      (PTRACE_TYPE_ARG3) xstateregs, x86bsd_xsave_len) == -1)
> > +	  if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs,
> > +		      x86bsd_xsave_len) == -1)
> >  	    perror_with_name (_("Couldn't write extended state status"));
> >  	  return;
> >  	}
> >  #endif
> > 
> > -      if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid),
> > -		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
> > +      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == 
> > -1)
> >  	perror_with_name (_("Couldn't get floating point status"));
> > 
> >        amd64_collect_fxsave (regcache, regnum, &fpregs);
> > 
> > -      if (ptrace (PT_SETFPREGS, get_ptrace_pid (inferior_ptid),
> > -		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
> > +      if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == 
> > -1)
> >  	perror_with_name (_("Couldn't write floating point status"));
> >      }
> > 
> 
> Whoops, looks like an oversight on my part.
> 
> Thanks!

No problem.  I checked the rest of the inferior_ptid's in the *bsd*
files and they all seem sane?  The debug register stuff uses inferior_ptid,
but it also uses that on other platforms.  (And I think we don't store
debug registers in the register cache.)

diff mbox

Patch

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index fc8dbe18da..259acca1ce 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@ 
+2017-04-04  John Baldwin  <jhb@FreeBSD.org>
+
+	* amd64-bsd-nat.c (amd64bsd_fetch_inferior_registers,
+	amd64bsd_store_inferior_registers): Use ptid from regcache.
+
 2017-04-04  Simon Marchi  <simon.marchi@polymtl.ca>
 
 	* remote.c (set_general_thread, set_continue_thread): Use ptid_t
diff --git a/gdb/amd64-bsd-nat.c b/gdb/amd64-bsd-nat.c
index 5678e94d11..ca61a3551b 100644
--- a/gdb/amd64-bsd-nat.c
+++ b/gdb/amd64-bsd-nat.c
@@ -43,13 +43,13 @@  amd64bsd_fetch_inferior_registers (struct target_ops *ops,
 				   struct regcache *regcache, int regnum)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
 
   if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
     {
       struct reg regs;
 
-      if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid),
-		  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
 	perror_with_name (_("Couldn't get registers"));
 
       amd64_supply_native_gregset (regcache, &regs, -1);
@@ -66,8 +66,8 @@  amd64bsd_fetch_inferior_registers (struct target_ops *ops,
       if (x86bsd_xsave_len != 0)
 	{
 	  xstateregs = alloca (x86bsd_xsave_len);
-	  if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid),
-		      (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
+	  if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
+	      == -1)
 	    perror_with_name (_("Couldn't get extended state status"));
 
 	  amd64_supply_xsave (regcache, -1, xstateregs);
@@ -75,8 +75,7 @@  amd64bsd_fetch_inferior_registers (struct target_ops *ops,
 	}
 #endif
 
-      if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid),
-		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
 	perror_with_name (_("Couldn't get floating point status"));
 
       amd64_supply_fxsave (regcache, -1, &fpregs);
@@ -91,19 +90,18 @@  amd64bsd_store_inferior_registers (struct target_ops *ops,
 				   struct regcache *regcache, int regnum)
 {
   struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
 
   if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
     {
       struct reg regs;
 
-      if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid),
-                  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
         perror_with_name (_("Couldn't get registers"));
 
       amd64_collect_native_gregset (regcache, &regs, regnum);
 
-      if (ptrace (PT_SETREGS, get_ptrace_pid (inferior_ptid),
-	          (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+      if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
         perror_with_name (_("Couldn't write registers"));
 
       if (regnum != -1)
@@ -119,27 +117,25 @@  amd64bsd_store_inferior_registers (struct target_ops *ops,
       if (x86bsd_xsave_len != 0)
 	{
 	  xstateregs = alloca (x86bsd_xsave_len);
-	  if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid),
-		      (PTRACE_TYPE_ARG3) xstateregs, 0) == -1)
+	  if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
+	      == -1)
 	    perror_with_name (_("Couldn't get extended state status"));
 
 	  amd64_collect_xsave (regcache, regnum, xstateregs, 0);
 
-	  if (ptrace (PT_SETXSTATE, get_ptrace_pid (inferior_ptid),
-		      (PTRACE_TYPE_ARG3) xstateregs, x86bsd_xsave_len) == -1)
+	  if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs,
+		      x86bsd_xsave_len) == -1)
 	    perror_with_name (_("Couldn't write extended state status"));
 	  return;
 	}
 #endif
 
-      if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid),
-		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
 	perror_with_name (_("Couldn't get floating point status"));
 
       amd64_collect_fxsave (regcache, regnum, &fpregs);
 
-      if (ptrace (PT_SETFPREGS, get_ptrace_pid (inferior_ptid),
-		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
 	perror_with_name (_("Couldn't write floating point status"));
     }
 }