Add support for threads in vax_bsd_nat_target

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

gdb/ChangeLog:

	* vax-bsd-nat.c (vaxbsd_supply_gregset): New variable lwp and pass
	it to the ptrace call.
	* vax-bsd-nat.c (vaxbsd_collect_gregset): Likewise.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index c148626b332fc7a18bcd12fc94334a78225489ec..34212357c84871f1b817dec4dda582ffae443efd 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,6 +1,13 @@
 2020-03-14  Kamil Rytarowski  <n54@gmx.com>
 
-       * vax-bsd-nat.c (vaxbsd_supply_gregset): Cast gregs to const gdb_byte *.
+       * vax-bsd-nat.c (vaxbsd_supply_gregset): New variable lwp and pass
+       it to the ptrace call.
+       * vax-bsd-nat.c (vaxbsd_collect_gregset): Likewise.
+
+2020-03-14  Kamil Rytarowski  <n54@gmx.com>
+
+       * vax-bsd-nat.c (vaxbsd_supply_gregset): Cast gregs to const
+       gdb_byte *.
        * vax-bsd-nat.c (vaxbsd_collect_gregset): Cast gregs to void *.
 
 2020-03-14  Kamil Rytarowski  <n54@gmx.com>

diff --git a/gdb/vax-bsd-nat.c b/gdb/vax-bsd-nat.c
index 9b1351d9b1497abb8c2ab35e1659d0787ce118f7..1ca1f7bb1e827e71750afe6e5aa87604cee2adfc 100644 (file)
--- a/gdb/vax-bsd-nat.c
+++ b/gdb/vax-bsd-nat.c
@@ -78,8 +78,9 @@ vax_bsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
 {
   struct reg regs;
   pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
 
-  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"));
 
   vaxbsd_supply_gregset (regcache, &regs);
@@ -93,13 +94,14 @@ vax_bsd_nat_target::store_registers (struct regcache *regcache, int regnum)
 {
   struct reg regs;
   pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
 
-  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"));
 
   vaxbsd_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"));
 }
 \f