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author | Andrew Burgess <andrew.burgess@embecosm.com> | 2016-03-30 00:02:19 +0100 |
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committer | Andrew Burgess <andrew.burgess@embecosm.com> | 2016-04-14 17:16:46 +0100 |
commit | 4b0c052e456421a3c6d7b4c98be3ad0b3bd2ad27 (patch) | |
tree | ba2ad6919a72787b533fdc37c2694aa49522995d /opcodes/arc-opc.c | |
parent | 33cbe6c07ed7e66d65c106cffb496eff5d7e8fb5 (diff) | |
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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.
Diffstat (limited to 'opcodes/arc-opc.c')
-rw-r--r-- | opcodes/arc-opc.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/opcodes/arc-opc.c b/opcodes/arc-opc.c index 5603ded..2ce8853 100644 --- a/opcodes/arc-opc.c +++ b/opcodes/arc-opc.c @@ -838,6 +838,25 @@ extract_nps_dst_pos_and_size (unsigned insn ATTRIBUTE_UNUSED, return (insn & 0x1f); } +static unsigned +insert_nps_cmem_uimm16 (unsigned insn ATTRIBUTE_UNUSED, + int value ATTRIBUTE_UNUSED, + const char **errmsg ATTRIBUTE_UNUSED) +{ + int top = (value >> 16) & 0xffff; + if (top != 0x0 && top != NPS_CMEM_HIGH_VALUE) + *errmsg = _("invalid value for CMEM ld/st immediate"); + insn |= (value & 0xffff); + return insn; +} + +static int +extract_nps_cmem_uimm16 (unsigned insn ATTRIBUTE_UNUSED, + bfd_boolean * invalid ATTRIBUTE_UNUSED) +{ + return (NPS_CMEM_HIGH_VALUE << 16) | (insn & 0xffff); +} + /* Include the generic extract/insert functions. Order is important as some of the functions present in the .h may be disabled via defines. */ @@ -1498,6 +1517,9 @@ const struct arc_operand arc_operands[] = #define NPS_RFLT_UIMM6 (NPS_UIMM16 + 1) { 6, 6, 0, ARC_OPERAND_UNSIGNED | ARC_OPERAND_NCHK, insert_nps_rflt_uimm6, extract_nps_rflt_uimm6 }, + +#define NPS_XLDST_UIMM16 (NPS_RFLT_UIMM6 + 1) + { 16, 0, BFD_RELOC_ARC_NPS_CMEM16, ARC_OPERAND_UNSIGNED | ARC_OPERAND_NCHK, insert_nps_cmem_uimm16, extract_nps_cmem_uimm16 }, }; const unsigned arc_num_operands = ARRAY_SIZE (arc_operands); |