From 4b0c052e456421a3c6d7b4c98be3ad0b3bd2ad27 Mon Sep 17 00:00:00 2001 From: Andrew Burgess Date: Wed, 30 Mar 2016 00:02:19 +0100 Subject: arc/nps400 : New cmem instructions and associated relocation Add support for arc/nps400 cmem instructions, these load and store instructions are hard-wired to access "0x57f00000 + 16-bit-offset". Supporting this relocation required some additions to the arc relocation handling in the bfd library, as well as the standard changes required to add a new relocation type. There's a test of the new instructions in the assembler, and a test of the relocation in the linker. bfd/ChangeLog: * reloc.c: Add BFD_RELOC_ARC_NPS_CMEM16 entry. * bfd-in2.h: Regenerate. * libbfd.h: Regenerate. * elf32-arc.c: Add 'opcode/arc.h' include. (struct arc_relocation_data): Add symbol_name. (arc_special_overflow_checks): New function. (arc_do_relocation): Use arc_special_overflow_checks, reindent as required, add an extra comment. (elf_arc_relocate_section): Setup symbol_name in reloc_data. gas/ChangeLog: * testsuite/gas/arc/nps400-3.d: New file. * testsuite/gas/arc/nps400-3.s: New file. include/ChangeLog: * elf/arc-reloc.def: Add ARC_NPS_CMEM16 reloc. * opcode/arc.h (NPS_CMEM_HIGH_VALUE): Define. ld/ChangeLog: * testsuite/ld-arc/arc.exp: New file. * testsuite/ld-arc/nps-1.s: New file. * testsuite/ld-arc/nps-1a.d: New file. * testsuite/ld-arc/nps-1b.d: New file. * testsuite/ld-arc/nps-1b.err: New file. opcodes/ChangeLog: * arc-nps400-tbl.h: Add xldb, xldw, xld, xstb, xstw, and xst instructions. * arc-opc.c (insert_nps_cmem_uimm16): New function. (extract_nps_cmem_uimm16): New function. (arc_operands): Add NPS_XLDST_UIMM16 operand. --- include/elf/arc-reloc.def | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/elf') diff --git a/include/elf/arc-reloc.def b/include/elf/arc-reloc.def index 36a3516..10703d2 100644 --- a/include/elf/arc-reloc.def +++ b/include/elf/arc-reloc.def @@ -490,3 +490,10 @@ ARC_RELOC_HOWTO(ARC_S21H_PCREL_PLT, 77, \ replace_disp21h, \ signed, \ ( ME ( ( ( ( L + A ) - P ) >> 1 ) ) )) + +ARC_RELOC_HOWTO(ARC_NPS_CMEM16, 78, \ + 2, \ + 16, \ + replace_bits16, \ + dont, \ + ( S + A )) -- cgit v1.1