asan: score: global-buffer-overflow

[deliverable/binutils-gdb.git] / gdb / i386-bsd-nat.c

diff --git a/gdb/i386-bsd-nat.c b/gdb/i386-bsd-nat.c
index 09ea99fd193e40f8812acb0fa20d716a2844970e..a10b496096e654d0e7ec293f87b55cab90d0979f 100644 (file)
--- a/gdb/i386-bsd-nat.c
+++ b/gdb/i386-bsd-nat.c
@@ -1,6 +1,6 @@
 /* Native-dependent code for modern i386 BSD's.
 
-   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   Copyright (C) 2000-2019 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -144,6 +144,33 @@ i386bsd_fetch_inferior_registers (struct regcache *regcache, int regnum)
        return;
     }
 
+#ifdef PT_GETFSBASE
+  if (regnum == -1 || regnum == I386_FSBASE_REGNUM)
+    {
+      register_t base;
+
+      if (ptrace (PT_GETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
+       perror_with_name (_("Couldn't get segment register fs_base"));
+
+      regcache->raw_supply (I386_FSBASE_REGNUM, &base);
+      if (regnum != -1)
+       return;
+    }
+#endif
+#ifdef PT_GETGSBASE
+  if (regnum == -1 || regnum == I386_GSBASE_REGNUM)
+    {
+      register_t base;
+
+      if (ptrace (PT_GETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
+       perror_with_name (_("Couldn't get segment register gs_base"));
+
+      regcache->raw_supply (I386_GSBASE_REGNUM, &base);
+      if (regnum != -1)
+       return;
+    }
+#endif
+
   if (regnum == -1 || regnum >= I386_ST0_REGNUM)
     {
       struct fpreg fpregs;
@@ -211,6 +238,33 @@ i386bsd_store_inferior_registers (struct regcache *regcache, int regnum)
        return;
     }
 
+#ifdef PT_SETFSBASE
+  if (regnum == -1 || regnum == I386_FSBASE_REGNUM)
+    {
+      register_t base;
+
+      regcache->raw_collect (I386_FSBASE_REGNUM, &base);
+
+      if (ptrace (PT_SETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
+       perror_with_name (_("Couldn't write segment register fs_base"));
+      if (regnum != -1)
+       return;
+    }
+#endif
+#ifdef PT_SETGSBASE
+  if (regnum == -1 || regnum == I386_GSBASE_REGNUM)
+    {
+      register_t base;
+
+      regcache->raw_collect (I386_GSBASE_REGNUM, &base);
+
+      if (ptrace (PT_SETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
+       perror_with_name (_("Couldn't write segment register gs_base"));
+      if (regnum != -1)
+       return;
+    }
+#endif
+
   if (regnum == -1 || regnum >= I386_ST0_REGNUM)
     {
       struct fpreg fpregs;