Add support to the Xtensa target for creating trampolines for out-of-range branches.

[deliverable/binutils-gdb.git] / gas / ChangeLog

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+2014-03-21  David Weatherford <weath@cadence.com>
+            Max Filippov <jcmvbkbc@gmail.com>
+
+       * config/tc-xtensa.c (xtensa_check_frag_count)
+       xtensa_create_trampoline_frag,
+       xtensa_maybe_create_trampoline_frag, init_trampoline_frag,
+       find_trampoline_seg, search_trampolines, get_best_trampoline,
+       check_and_update_trampolines, add_jump_to_trampoline,
+       dump_trampolines): New functions.
+       (md_parse_option): Add cases for --[no-]trampolines options.
+       (md_assemble, finish_vinsn, xtensa_end): Add call to
+       xtensa_check_frag_count.
+       (xg_assemble_vliw_tokens): Add call to
+       xtensa_maybe_create_trampoline_frag.
+       (xtensa_relax_frag): Relax fragments with RELAX_TRAMPOLINE state.
+       (relax_frag_immed): Relax jump instructions that cannot reach its
+       target.
+       * config/tc-xtensa.h (xtensa_relax_statesE::RELAX_TRAMPOLINE): New
+       relax state.
+       * doc/as.texinfo: Document --[no-]trampolines command-line options.
+       * doc/c-xtensa.texi: Document trampolines relaxation and command
+       line options.
+       * frags.c (get_frag_count, clear_frag_count): New function.
+       (frag_alloc): Increment totalfrags counter.
+       * frags.h (get_frag_count, clear_frag_count): New function.
+
 2014-03-20  DJ Delorie  <dj@redhat.com>
 
        * config/rl78-defs.h (RL78_RELAX_NONE, RL78_RELAX_BRANCH): Add.