t-pdp11: Add MULTILIB support for msoft-float.
* t-pdp11: Add MULTILIB support for msoft-float.
* pdp11.h (LEGITIMATE_CONSTANT_P): Fix soft-float case.
* t-pdp11: Add LIB2FUNCS_EXTRA.
* pdp11.c (pdp11_output_function_prologue): Restrict offset to 16bit,
add preceding 0 to the octal constant, rename 'fp' to 'r5', rename
'fldd' to 'ldd', rename 'fstd' to 'std'.
(pdp11_output_function_epilogue): Likewise.
(output_move_quad): Make the comment gas compatible.
(output_ascii): Add preceding 0 to the octal constant.
(print_operand_address): Add pre_modify, post_modify.
(output_addr_const_pdp11): Add preceding 0 to the octal constant.
* pdp11.h (GO_IF_LEGITIMATE_ADDRESS) : Add 'movb' pre_modify case
with the indication of Paul Koning.
(PRINT_OPERAND): Fix floating constant.
* pdp11.md (movdi): Restrict matching pattern.
(movqi): Generalize the matching pattern.
(movdf): Restrict matching pattern.
(zero_extendqihi2): Change constant representation.
(floatsidf2): Fix wrong operands.
(addqi3): Fix wrong instruction name.
(subqi3): Fix wrong instruction name.
(andsi3, andhi3, andqi3): Simplify and fix to use 'bic'.
(xorsi3): Fix wrong insn.
(one_cmplqi2): Add two operand pattern.
(lsrsi3): New.
(negsi2): New.
(call): Add register indirect case.
(mod): Fix wrong subreg.
From-SVN: r57886