2008-08-20 Bob Wilson <bob.wilson@acm.org>

bfd/
        * elf-bfd.h (elf_object_id): Add XTENSA_ELF_TDATA.
        * elf32-xtensa.c (elf_howto_table): Add TLS relocations.
        (elf_xtensa_reloc_type_lookup): Likewise.
        (TCB_SIZE): Define.
        (elf_xtensa_link_hash_entry): New.
        (GOT_UNKNOWN, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_TLS_ANY): Define.
        (elf_xtensa_hash_entry): Define.
        (elf_xtensa_obj_tdata): New.
        (elf_xtensa_tdata): Define.
        (elf_xtensa_local_got_tls_type): Define.
        (elf_xtensa_local_tlsfunc_refcounts): Define.
        (is_xtensa_elf): Define.
        (elf_xtensa_mkobject): New.
        (elf_xtensa_link_hash_table): Add tlsbase field.
        (elf_xtensa_link_hash_newfunc): New.
        (elf_xtensa_link_hash_table_create): Use elf_xtensa_link_hash_newfunc.
        Create an entry for "_TLS_MODULE_BASE_" and save it in tlsbase field.
        (elf_xtensa_copy_indirect_symbol): New.
        (elf_xtensa_check_relocs): Rewrite to handle TLS relocations.
        (elf_xtensa_gc_sweep_hook): Likewise.
        (elf_xtensa_allocate_dynrelocs): Optimize away GOT entries for
        TLSDESC_FN relocations when an IE reference is seen.
        (elf_xtensa_allocate_local_got_size): Likewise.
        (elf_xtensa_always_size_sections): New.
        (dtpoff_base, tpoff): New.
        (elf_xtensa_do_reloc): Handle TLS relocations.
        (replace_tls_insn): New.
        (IS_XTENSA_TLS_RELOC): Define.
        (elf_xtensa_relocate_section): Handle TLS relocations.
        (get_indirect_call_dest_reg): New.
        (bfd_elf32_mkobject): Define.
        (elf_backend_always_size_sections): New.
        (elf_backend_copy_indirect_symbol): New.
        * reloc.c (BFD_RELOC_XTENSA_TLSDESC_FN, BFD_RELOC_XTENSA_TLSDESC_ARG)
        (BFD_RELOC_XTENSA_TLS_DTPOFF, BFD_RELOC_XTENSA_TLS_TPOFF)
        (BFD_RELOC_XTENSA_TLS_FUNC, BFD_RELOC_XTENSA_TLS_ARG)
        (BFD_RELOC_XTENSA_TLS_CALL): New.
        * bfd-in2.h: Regenerate.
        * libbfd.h: Regenerate.
gas/
        * config/tc-xtensa.c (O_tlsfunc, O_tlsarg, O_tlscall): Define.
        (O_tpoff, O_dtpoff): Define.
        (suffix_relocs): Add entries for TLS suffixes.
        (xtensa_elf_cons): Check for invalid use of TLS relocations.
        (map_operator_to_reloc): Add is_literal parameter and use it to
        control translating TLS instruction relocations to the corresponding
        literal relocations.
        (xg_valid_literal_expression): Allow TLS operators.
        (xg_build_to_insn): Copy TLS operators from pseudo-instruction
        operands to generated literals.
        (xg_assemble_literal): Handle TLS operators.  Update call to
        map_operator_to_reloc.
        (md_assemble): Handle CALLXn.TLS pseudo-instruction.
        (md_apply_fix): Handle TLS relocations.
        (emit_single_op): Handle TLS operators.
        (convert_frag_immed): Update call to map_operator_to_reloc.
        (vinsn_to_insnbuf): Emit relocations for TLS-related instructions.
        * config/xtensa-istack.h (tinsn_struct): Add tls_reloc field.
        * config/xtensa-relax.c (append_literal_op): Add src_op parameter
        to initialize the op_data field of the BuildOp.
        (build_transition): Use it here to record the source operand
        corresponding to a generated literal.
        * config/xtensa-relax.h (build_op): Comment op_data use for literals.
include/elf/
        * xtensa.h (R_XTENSA_TLSDESC_FN, R_XTENSA_TLSDESC_ARG)
        (R_XTENSA_TLS_DTPOFF, R_XTENSA_TLS_TPOFF, R_XTENSA_TLS_FUNC)
        (R_XTENSA_TLS_ARG, R_XTENSA_TLS_CALL): New.
ld/testsuite/
        * ld-xtensa/tlsbin.dd, ld-xtensa/tlsbin.rd, ld-xtensa/tlsbin.s,
        ld-xtensa/tlsbin.sd, ld-xtensa/tlsbin.td, ld-xtensa/tlslib.s,
        ld-xtensa/tlspic.dd, ld-xtensa/tlspic.rd, ld-xtensa/tlspic.sd,
        ld-xtensa/tlspic.td, ld-xtensa/tlspic1.s, ld-xtensa/tlspic2.s: New.
        * ld-xtensa/xtensa.exp: Run them.

1 files changed, 13 insertions, 4 deletions

diff --git a/gas/config/xtensa-relax.c b/gas/config/xtensa-relax.c
index 89a53d3..8f49afa 100644
--- a/gas/config/xtensa-relax.c
+++ b/gas/config/xtensa-relax.c
@@ -1,5 +1,5 @@
 /* Table of relaxations for Xtensa assembly.
-   Copyright 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+   Copyright 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
 
    This file is part of GAS, the GNU Assembler.
 
@@ -645,13 +645,13 @@ append_op (BuildInstr *bi, BuildOp *b_op)
 
 
 static void
-append_literal_op (BuildInstr *bi, unsigned op1)
+append_literal_op (BuildInstr *bi, unsigned op1, unsigned src_op)
 {
   BuildOp *b_op = (BuildOp *) xmalloc (sizeof (BuildOp));
 
   b_op->op_num = op1;
   b_op->typ = OP_LITERAL;
-  b_op->op_data = 0;
+  b_op->op_data = src_op;
   b_op->next = NULL;
   append_op (bi, b_op);
 }
@@ -1594,6 +1594,7 @@ build_transition (insn_pattern *initial_insn,
   TransitionRule *tr = NULL;
   xtensa_opcode opcode;
   xtensa_isa isa = xtensa_default_isa;
+  BuildInstr *literal_bi;
 
   opname_map_e *op1;
   opname_map_e *op2;
@@ -1706,6 +1707,7 @@ build_transition (insn_pattern *initial_insn,
      can be used before they are defined.  Also there are a number of
      special operands (e.g., HI24S).  */
 
+  literal_bi = NULL;
   for (r = replace_insns->head; r != NULL; r = r->next)
     {
       BuildInstr *bi;
@@ -1730,6 +1732,7 @@ build_transition (insn_pattern *initial_insn,
 	  bi->typ = INSTR_LITERAL_DEF;
 	  if (operand_count != 1)
 	    as_fatal (_("expected one operand for generated literal"));
+	  literal_bi = bi;
 	}
       else if (strcmp (opcode_name, "LABEL") == 0)
 	{
@@ -1768,7 +1771,13 @@ build_transition (insn_pattern *initial_insn,
 	  if (op_is_constant (op))
 	    append_constant_op (bi, op->operand_num, op_get_constant (op));
 	  else if (strcmp (op->operand_name, "%LITERAL") == 0)
-	    append_literal_op (bi, op->operand_num);
+	    {
+	      if (! literal_bi || ! literal_bi->ops || literal_bi->ops->next)
+		as_fatal (_("opcode '%s': cannot find literal definition"),
+			  opcode_name);
+	      append_literal_op (bi, op->operand_num,
+				 literal_bi->ops->op_data);
+	    }
 	  else if (strcmp (op->operand_name, "%LABEL") == 0)
 	    append_label_op (bi, op->operand_num);
 	  else if (op->operand_name[0] == 'a'