MIPS: Verify the ISA mode and alignment of branch and jump targets

[external/binutils.git] / bfd / ChangeLog

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+2016-07-19  Maciej W. Rozycki  <macro@imgtec.com>
+
+       * elfxx-mips.c (b_reloc_p): Add R_MICROMIPS_PC16_S1,
+       R_MICROMIPS_PC10_S1 and R_MICROMIPS_PC7_S1.
+       (branch_reloc_p): New function.
+       (mips_elf_calculate_relocation): Handle ISA mode determination
+       for relocations against section symbols, against absolute
+       symbols and absolute relocations.  Also set `*cross_mode_jump_p'
+       for branches.
+       <R_MIPS16_26, R_MIPS_26, R_MICROMIPS_26_S1>: Suppress alignment
+       checks for weak undefined symbols.  Also check target alignment
+       within the same ISA mode.
+       <R_MIPS_PC16, R_MIPS_GNU_REL16_S2>: Handle cross-mode branches
+       in the alignment check.
+       <R_MICROMIPS_PC7_S1>: Add an alignment check.
+       <R_MICROMIPS_PC10_S1>: Likewise.
+       <R_MICROMIPS_PC16_S1>: Likewise.
+       (mips_elf_perform_relocation): Report a failure for unsupported
+       same-mode JALX instructions and cross-mode branches.
+       (_bfd_mips_elf_relocate_section) <bfd_reloc_outofrange>: Add
+       error messages for jumps to misaligned addresses.
+
 2016-07-16  Alan Modra  <amodra@gmail.com>
 
        * elflink.c: Include plugin-api.h.