Add support for NetBSD threads in m68k-bsd-nat.c

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

gdb/ChangeLog:

        * m68k-bsd-nat.c (fetch_registers): New variable lwp and pass
        it to the ptrace call.
        * m68k-bsd-nat.c (store_registers): Likewise.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6703f1d4ae055f773095f50094aa355d62603276..04db5e76734d0de121fa9fa782b26199a5eacd49 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2020-03-14  Kamil Rytarowski  <n54@gmx.com>
+
+       * m68k-bsd-nat.c (fetch_registers): New variable lwp and pass
+       it to the ptrace call.
+       * m68k-bsd-nat.c (store_registers): Likewise.
+
 2020-03-14  Kamil Rytarowski  <n54@gmx.com>
 
        * m68k-bsd-nat.c (m68kbsd_supply_gregset): Change type of regs to

diff --git a/gdb/m68k-bsd-nat.c b/gdb/m68k-bsd-nat.c
index a3123a731991127e9f789925df9bbf96260e471f..9c42da5ca77c33bea8b72049cc90766e364486e3 100644 (file)
--- a/gdb/m68k-bsd-nat.c
+++ b/gdb/m68k-bsd-nat.c
@@ -121,12 +121,13 @@ void
 m68k_bsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
 {
   pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
 
   if (regnum == -1 || m68kbsd_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"));
 
       m68kbsd_supply_gregset (regcache, &regs);
@@ -136,7 +137,7 @@ m68k_bsd_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"));
 
       m68kbsd_supply_fpregset (regcache, &fpregs);
@@ -150,17 +151,18 @@ void
 m68k_bsd_nat_target::store_registers (struct regcache *regcache, int regnum)
 {
   pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
 
   if (regnum == -1 || m68kbsd_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"));
 
       m68kbsd_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"));
     }
 
@@ -168,12 +170,12 @@ m68k_bsd_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"));
 
       m68kbsd_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"));
     }
 }