[binutils-gdb] Add support for NetBSD threads in hppa-nbsd-nat.c

[binutils-gdb] Add support for NetBSD threads in hppa-nbsd-nat.c

[Kamil Rytarowski]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4a90f062056e842c3f53293482e0039db0da3245

commit 4a90f062056e842c3f53293482e0039db0da3245
Author: Kamil Rytarowski <n54@gmx.com>
Date:   Thu Mar 19 15:39:56 2020 +0100

    Add support for NetBSD threads in hppa-nbsd-nat.c
    
    NetBSD ptrace(2) accepts thread id (LWP) as the 4th argument for threads.
    
    gdb/ChangeLog:
    
            * hppa-nbsd-nat.c (fetch_registers): New variable lwp and pass
            it to the ptrace call.
            * (store_registers): Likewise.

Diff:
---
 gdb/ChangeLog       |  8 +++++++-
 gdb/hppa-nbsd-nat.c | 14 ++++++++------
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f9076325fa0..cb6905b8a3b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,4 +1,10 @@
-2020-03-12  Kamil Rytarowski  <n54@gmx.com>
+2020-03-20  Kamil Rytarowski  <n54@gmx.com>
+
+	* hppa-nbsd-nat.c (fetch_registers): New variable lwp and pass
+	it to the ptrace call.
+	* (store_registers): Likewise.
+
+2020-03-20  Kamil Rytarowski  <n54@gmx.com>
 
 	* ppc-nbsd-nat.c (fetch_registers): New variable lwp and pass
 	it to the ptrace call.
diff --git a/gdb/hppa-nbsd-nat.c b/gdb/hppa-nbsd-nat.c
index d8255030ddf..c35f30daa8e 100644
--- a/gdb/hppa-nbsd-nat.c
+++ b/gdb/hppa-nbsd-nat.c
@@ -171,12 +171,13 @@ hppa_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
 
 {
   pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
 
   if (regnum == -1 || hppanbsd_gregset_supplies_p (regnum))
     {
       struct reg regs;
 
-      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, lwp) == -1)
 	perror_with_name (_("Couldn't get registers"));
 
       hppanbsd_supply_gregset (regcache, &regs);
@@ -186,7 +187,7 @@ hppa_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
     {
       struct fpreg fpregs;
 
-      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
 	perror_with_name (_("Couldn't get floating point status"));
 
       hppanbsd_supply_fpregset (regcache, &fpregs);
@@ -200,17 +201,18 @@ void
 hppa_nbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
 {
   pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
 
   if (regnum == -1 || hppanbsd_gregset_supplies_p (regnum))
     {
       struct reg regs;
 
-      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, lwp) == -1)
         perror_with_name (_("Couldn't get registers"));
 
       hppanbsd_collect_gregset (regcache, &regs, regnum);
 
-      if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+      if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, lwp) == -1)
         perror_with_name (_("Couldn't write registers"));
     }
 
@@ -218,12 +220,12 @@ hppa_nbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
     {
       struct fpreg fpregs;
 
-      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
 	perror_with_name (_("Couldn't get floating point status"));
 
       hppanbsd_collect_fpregset (regcache, &fpregs, regnum);
 
-      if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+      if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
 	perror_with_name (_("Couldn't write floating point status"));
     }
 }