x86: drop a few dead macros

[deliverable/binutils-gdb.git] / gdb / amd64-nat.c

diff --git a/gdb/amd64-nat.c b/gdb/amd64-nat.c
index 17552a6b81b5e48c66f8df7fa1d2e3c97d196008..3dcac73d88a91e64c287a7b3394dc482727c0e09 100644 (file)
--- a/gdb/amd64-nat.c
+++ b/gdb/amd64-nat.c
@@ -1,6 +1,6 @@
 /* Native-dependent code for AMD64.
 
-   Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   Copyright (C) 2003-2019 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -65,10 +65,17 @@ amd64_native_gregset_reg_offset (struct gdbarch *gdbarch, int regnum)
   if (num_regs > gdbarch_num_regs (gdbarch))
     num_regs = gdbarch_num_regs (gdbarch);
 
-  if (regnum < num_regs && regnum < gdbarch_num_regs (gdbarch))
-    return reg_offset[regnum];
+  if (regnum >= num_regs)
+    return -1;
 
-  return -1;
+  /* Kernels that predate Linux 2.6.25 don't provide access to
+     these segment registers in user_regs_struct.   */
+#ifndef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
+  if (regnum == AMD64_FSBASE_REGNUM || regnum == AMD64_GSBASE_REGNUM)
+    return -1;
+#endif
+
+  return reg_offset[regnum];
 }
 
 /* Return whether the native general-purpose register set supplies
@@ -88,8 +95,8 @@ void
 amd64_supply_native_gregset (struct regcache *regcache,
                             const void *gregs, int regnum)
 {
-  const char *regs = gregs;
-  struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  const char *regs = (const char *) gregs;
+  struct gdbarch *gdbarch = regcache->arch ();
   int num_regs = amd64_native_gregset64_num_regs;
   int i;
 
@@ -106,7 +113,7 @@ amd64_supply_native_gregset (struct regcache *regcache,
          int offset = amd64_native_gregset_reg_offset (gdbarch, i);
 
          if (offset != -1)
-           regcache_raw_supply (regcache, i, regs + offset);
+           regcache->raw_supply (i, regs + offset);
        }
     }
 }
@@ -119,8 +126,8 @@ void
 amd64_collect_native_gregset (const struct regcache *regcache,
                              void *gregs, int regnum)
 {
-  char *regs = gregs;
-  struct gdbarch *gdbarch = get_regcache_arch (regcache);
+  char *regs = (char *) gregs;
+  struct gdbarch *gdbarch = regcache->arch ();
   int num_regs = amd64_native_gregset64_num_regs;
   int i;
 
@@ -153,7 +160,7 @@ amd64_collect_native_gregset (const struct regcache *regcache,
          int offset = amd64_native_gregset_reg_offset (gdbarch, i);
 
          if (offset != -1)
-           regcache_raw_collect (regcache, i, regs + offset);
+           regcache->raw_collect (i, regs + offset);
        }
     }
 }