x86: Support Intel Shadow Stack with SHSTK property

[deliverable/binutils-gdb.git] / include / elf / ppc64.h

diff --git a/include/elf/ppc64.h b/include/elf/ppc64.h
index dfd775da1c484873837e5dd54963ba79d33440cf..145e9b6b1e5ec19e9571f8411389cc4c7be8843b 100644 (file)
--- a/include/elf/ppc64.h
+++ b/include/elf/ppc64.h
@@ -1,5 +1,5 @@
 /* PPC64 ELF support for BFD.
-   Copyright 2003, 2005, 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2003-2017 Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
@@ -139,6 +139,32 @@ START_RELOC_NUMBERS (elf_ppc64_reloc_type)
   RELOC_NUMBER (R_PPC64_DTPREL16_HIGHESTA, 106)
   RELOC_NUMBER (R_PPC64_TLSGD,            107)
   RELOC_NUMBER (R_PPC64_TLSLD,            108)
+  RELOC_NUMBER (R_PPC64_TOCSAVE,          109)
+
+/* Added when HA and HI relocs were changed to report overflows.  */
+  RELOC_NUMBER (R_PPC64_ADDR16_HIGH,      110)
+  RELOC_NUMBER (R_PPC64_ADDR16_HIGHA,     111)
+  RELOC_NUMBER (R_PPC64_TPREL16_HIGH,     112)
+  RELOC_NUMBER (R_PPC64_TPREL16_HIGHA,    113)
+  RELOC_NUMBER (R_PPC64_DTPREL16_HIGH,    114)
+  RELOC_NUMBER (R_PPC64_DTPREL16_HIGHA,           115)
+
+/* Added for ELFv2.  */
+  RELOC_NUMBER (R_PPC64_REL24_NOTOC,      116)
+  RELOC_NUMBER (R_PPC64_ADDR64_LOCAL,     117)
+  RELOC_NUMBER (R_PPC64_ENTRY,            118)
+
+#ifndef RELOC_MACROS_GEN_FUNC
+/* Relocation only used internally by ld.  If you need to use these
+   reloc numbers, you can change them to some other unused value
+   without affecting the ABI.  They will never appear in object files.  */
+  RELOC_NUMBER (R_PPC64_LO_DS_OPT,        128)
+/* Reloc only used internally by gas.  As above, value is unimportant.  */
+  RELOC_NUMBER (R_PPC64_16DX_HA,          129)
+#endif
+
+/* Power9 split rel16 for addpcis.  */
+  RELOC_NUMBER (R_PPC64_REL16DX_HA,       246)
 
 /* Support STT_GNU_IFUNC plt calls.  */
   RELOC_NUMBER (R_PPC64_JMP_IREL,         247)
@@ -156,8 +182,63 @@ START_RELOC_NUMBERS (elf_ppc64_reloc_type)
 
 END_RELOC_NUMBERS (R_PPC64_max)
 
-#define IS_PPC64_TLS_RELOC(R) \
-  ((R) >= R_PPC64_TLS && (R) <= R_PPC64_DTPREL16_HIGHESTA)
+#define IS_PPC64_TLS_RELOC(R)                                          \
+  (((R) >= R_PPC64_TLS && (R) <= R_PPC64_DTPREL16_HIGHESTA)            \
+   || ((R) >= R_PPC64_TPREL16_HIGH && (R) <= R_PPC64_DTPREL16_HIGHA))
+
+
+/* e_flags bits specifying ABI.
+   1 for original function descriptor using ABI,
+   2 for revised ABI without function descriptors,
+   0 for unspecified or not using any features affected by the differences.  */
+#define EF_PPC64_ABI   3
+
+/* The ELFv2 ABI uses three bits in the symbol st_other field of a
+   function definition to specify the number of instructions between a
+   function's global entry point and local entry point.
+   The global entry point is used when it is necessary to set up the
+   toc pointer (r2) for the function.  Callers must enter the global
+   entry point with r12 set to the global entry point address.  On
+   return from the function, r2 may have a different value to that
+   which it had on entry.
+   The local entry point is used when r2 is known to already be valid
+   for the function.  There is no requirement on r12 when using the
+   local entry point, and on return r2 will contain the same value as
+   at entry.
+   A value of zero in these bits means that the function has a single
+   entry point with no requirement on r12 or r2, and that on return r2
+   will contain the same value as at entry.
+   Values of one and seven are reserved.  */
+#define STO_PPC64_LOCAL_BIT            5
+#define STO_PPC64_LOCAL_MASK           (7 << STO_PPC64_LOCAL_BIT)
+
+// 3 bit other field to bytes.
+static inline unsigned int
+ppc64_decode_local_entry(unsigned int other)
+{
+  return ((1 << other) >> 2) << 2;
+}
+
+// bytes to field value.
+static inline unsigned int
+ppc64_encode_local_entry(unsigned int val)
+{
+  return (val >= 4 * 4
+         ? (val >= 8 * 4
+            ? (val >= 16 * 4 ? 6 : 5)
+            : 4)
+         : (val >= 2 * 4
+            ? 3
+            : (val >= 1 * 4 ? 2 : 0)));
+}
+
+/* st_other to number of bytes.  */
+#define PPC64_LOCAL_ENTRY_OFFSET(other)                                \
+  ppc64_decode_local_entry (((other) & STO_PPC64_LOCAL_MASK)   \
+                           >> STO_PPC64_LOCAL_BIT)
+/* number of bytes to st_other.  */
+#define PPC64_SET_LOCAL_ENTRY_OFFSET(val)              \
+  ppc64_encode_local_entry (val) << STO_PPC64_LOCAL_BIT
 
 /* Specify the start of the .glink section.  */
 #define DT_PPC64_GLINK         DT_LOPROC
@@ -166,7 +247,10 @@ END_RELOC_NUMBERS (R_PPC64_max)
 #define DT_PPC64_OPD           (DT_LOPROC + 1)
 #define DT_PPC64_OPDSZ         (DT_LOPROC + 2)
 
-/* Specify that tls descriptors should be optimized.  */
-#define DT_PPC64_TLSOPT                (DT_LOPROC + 3)
+/* Specify whether various optimisations are possible.  */
+#define DT_PPC64_OPT           (DT_LOPROC + 3)
+#define PPC64_OPT_TLS          1
+#define PPC64_OPT_MULTI_TOC    2
+#define PPC64_OPT_LOCALENTRY   4
 
 #endif /* _ELF_PPC64_H */