Add support for NetBSD threads in sh-nbsd-nat.c

NetBSD ptrace(2) accepts thread id (LWP) as the 4th argument for threads.

gdb/ChangeLog:

	* sh-nbsd-nat.c (fetch_registers): New variable lwp and pass
	it to the ptrace call.
	* sh-nbsd-nat.c (store_registers): Likewise.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index b0b98399552a7870c588b78e96c845073be4a251..e418e43740d48b5c13ae7a98623a74a60bea3c37 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2020-03-17  Kamil Rytarowski  <n54@gmx.com>
+
+       * sh-nbsd-nat.c (fetch_registers): New variable lwp and pass
+       it to the ptrace call.
+       * sh-nbsd-nat.c (store_registers): Likewise.
+
 2020-03-17  Kamil Rytarowski  <n54@gmx.com>
 
        * sh-nbsd-nat.c (sh_nbsd_nat_target): Inherit from

diff --git a/gdb/sh-nbsd-nat.c b/gdb/sh-nbsd-nat.c
index 486ef9d18e93391680d6aa2740ff540220b41ca1..b4f9db691ce0869bccf1cbba14aea71472946bf6 100644 (file)
--- a/gdb/sh-nbsd-nat.c
+++ b/gdb/sh-nbsd-nat.c
@@ -53,13 +53,14 @@ void
 sh_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regno)
 {
   pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
 
   if (regno == -1 || GETREGS_SUPPLIES (regcache->arch (), regno))
     {
       struct reg inferior_registers;
 
       if (ptrace (PT_GETREGS, pid,
-                 (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
+                 (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1)
        perror_with_name (_("Couldn't get registers"));
 
       sh_corefile_supply_regset (&sh_corefile_gregset, regcache, regno,
@@ -75,13 +76,14 @@ void
 sh_nbsd_nat_target::store_registers (struct regcache *regcache, int regno)
 {
   pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
 
   if (regno == -1 || GETREGS_SUPPLIES (regcache->arch (), regno))
     {
       struct reg inferior_registers;
 
       if (ptrace (PT_GETREGS, pid,
-                 (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
+                 (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1)
        perror_with_name (_("Couldn't get registers"));
 
       sh_corefile_collect_regset (&sh_corefile_gregset, regcache, regno,
@@ -89,7 +91,7 @@ sh_nbsd_nat_target::store_registers (struct regcache *regcache, int regno)
                                  SHNBSD_SIZEOF_GREGS);
 
       if (ptrace (PT_SETREGS, pid,
-                 (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
+                 (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1)
        perror_with_name (_("Couldn't set registers"));
 
       if (regno != -1)