aix: implement R_TOCU and R_TOCL relocations

Implement support for largetoc on XCOFF.
R_TOCU and R_TOCL are referenced by the new BFD defines:
BFD_RELOC_PPC_TOC16_HI and BFD_RELOC_PPC_TOC16_LO.
A new toc storage class is added XMC_TE.

In order to correctly handle R_TOCU, the logic behind
xcoff_reloc_type_toc is changed to compute the whole TOC offset
instead of just the difference between the "link" offset and the
"assembly" offset.

In gas, add a function to transform addis format used by AIX
"addis RT, D(RA)" into the ELF format "addis RT, RA, SI".

bfd/
	* reloc.c (BFD_RELOC_PPC_TOC16_HI, BFD_RELOC_PPC_TOC16_LO):
	New relocations.
	* bfd-in2.h: Regenerate.
	* libbfd.h: Regenerate.
	* coff-rs6000.c (xcoff_calculate_relocation): Call
	xcoff_reloc_type_toc for R_TOCU and R_TOCL.
	(xcoff_howto_table): Remove src_mask for TOC relocations.
	Add R_TOCU and R_TOCL howtos.
	(_bfd_xcoff_reloc_type_lookup): Add cases for
	BFD_RELOC_PPC_TOC16_HI and BFD_RELOC_PPC_TOC16_LO.
	(xcoff_reloc_type_toc): Compute the whole offset.
	Implement R_TOCU and R_TOCL.
	* coff64-rs6000.c (xcoff64_calculate_relocation):
	Likewise.
	(xcoff64_howto_table): Likewise.
	(xcoff64_reloc_type_lookup): Likewise.
gas/
	* config/tc-ppc.c (ppc_xcoff_suffix): New function.
	(MAP, MAP32, MAP64): New macros for XCOFF.
	(ppc_xcoff_fixup_addis): New function.
	(ppc_is_toc_sym): Handle XMC_TE.
	(fixup_size): Add cases for BFD_RELOC_PPC_TOC16_HI and
	BFD_RELOC_PPC_TOC16_LO.
	(md_assemble): Call ppc_xcoff_fixup_addis for XCOFF.
	(ppc_change_csect): Handle XMC_TE.
	(ppc_tc): Enable .tc symbols to have only a XMC_TC or XMC_TE
	storage class.
	(ppc_symbol_new_hook): Handle XMC_TE.
	(ppc_frob_symbol): Likewise.
	(ppc_fix_adjustable): Likewise.
	(md_apply_fix): Handle BFD_RELOC_PPC_TOC16_HI and
	BFD_RELOC_PPC_TOC16_LO.
ld/
	* scripttempl/aix.sc: Add .te to .data section.
	* testsuite/ld-powerpc/aix52.exp: Add test structure for AIX7+.
	Add aix-largetoc-1 test.
	* testsuite/ld-powerpc/aix-largetoc-1-32.d: New test.
	* testsuite/ld-powerpc/aix-largetoc-1-64.d: New test.
	* testsuite/ld-powerpc/aix-largetoc-1.ex: New test.
	* testsuite/ld-powerpc/aix-largetoc-1.s: New test.

1 files changed, 36 insertions, 9 deletions

diff --git a/bfd/coff64-rs6000.c b/bfd/coff64-rs6000.c
index 0cb7e8b..55a6821 100644
--- a/bfd/coff64-rs6000.c
+++ b/bfd/coff64-rs6000.c
@@ -228,8 +228,8 @@ xcoff64_calculate_relocation[XCOFF_MAX_CALCULATE_RELOCATION] =
   xcoff_reloc_type_fail, /*           (0x2d) */
   xcoff_reloc_type_fail, /*           (0x2e) */
   xcoff_reloc_type_fail, /*           (0x2f) */
-  xcoff_reloc_type_fail, /* R_TOCU    (0x30) */
-  xcoff_reloc_type_fail, /* R_TOCL    (0x31) */
+  xcoff_reloc_type_toc, /* R_TOCU    (0x30) */
+  xcoff_reloc_type_toc, /* R_TOCL    (0x31) */
 };
 
 /* coffcode.h needs these to be defined.  */
@@ -899,7 +899,7 @@ reloc_howto_type xcoff64_howto_table[] =
 	 0,			/* special_function */
 	 "R_TOC",		/* name */
 	 TRUE,			/* partial_inplace */
-	 0xffff,		/* src_mask */
+	 0,			/* src_mask */
 	 0xffff,		/* dst_mask */
 	 FALSE),		/* pcrel_offset */
 
@@ -914,7 +914,7 @@ reloc_howto_type xcoff64_howto_table[] =
 	 0,			/* special_function */
 	 "R_TRL",		/* name */
 	 TRUE,			/* partial_inplace */
-	 0xffff,		/* src_mask */
+	 0,			/* src_mask */
 	 0xffff,		/* dst_mask */
 	 FALSE),		/* pcrel_offset */
 
@@ -929,7 +929,7 @@ reloc_howto_type xcoff64_howto_table[] =
 	 0,			/* special_function */
 	 "R_GL",		/* name */
 	 TRUE,			/* partial_inplace */
-	 0xffff,		/* src_mask */
+	 0,			/* src_mask */
 	 0xffff,		/* dst_mask */
 	 FALSE),		/* pcrel_offset */
 
@@ -944,7 +944,7 @@ reloc_howto_type xcoff64_howto_table[] =
 	 0,			/* special_function */
 	 "R_TCL",		/* name */
 	 TRUE,			/* partial_inplace */
-	 0xffff,		/* src_mask */
+	 0,			/* src_mask */
 	 0xffff,		/* dst_mask */
 	 FALSE),		/* pcrel_offset */
 
@@ -1260,11 +1260,34 @@ reloc_howto_type xcoff64_howto_table[] =
   EMPTY_HOWTO(0x2e),
   EMPTY_HOWTO(0x2f),
 
-  /* 0x30: High-order 16 bit TOC relative relocation.  */
-  EMPTY_HOWTO (R_TOCU),
+  HOWTO (R_TOCU,		/* type */
+	 16,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 16,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_bitfield, /* complain_on_overflow */
+	 0,			/* special_function */
+	 "R_TOCU",		/* name */
+	 TRUE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
 
   /* 0x31: Low-order 16 bit TOC relative relocation.  */
-  EMPTY_HOWTO (R_TOCL),
+  HOWTO (R_TOCL,		/* type */
+	 0,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 16,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont, /* complain_on_overflow */
+	 0,			/* special_function */
+	 "R_TOCL",		/* name */
+	 TRUE,			/* partial_inplace */
+	 0,			/* src_mask */
+	 0xffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
 
 };
 
@@ -1319,6 +1342,10 @@ xcoff64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
       return &xcoff64_howto_table[8];
     case BFD_RELOC_PPC_TOC16:
       return &xcoff64_howto_table[3];
+    case BFD_RELOC_PPC_TOC16_HI:
+      return &xcoff64_howto_table[0x30];
+    case BFD_RELOC_PPC_TOC16_LO:
+      return &xcoff64_howto_table[0x31];
     case BFD_RELOC_PPC_B16:
       return &xcoff64_howto_table[0x1e];
     case BFD_RELOC_32: