* configure.ac (mips*-*-*linux*, mips*-*-gnu*): Use mt-mips-gnu.
* configure: Regenerate.
config/
* mt-mips16-compat: New file, taken from mt-mips-elfoabi.
* mt-mips-elfoabi: Include mt-mips16-compat.
* mt-mips-gnu: New file.
gcc/
* config.gcc (mips*-*-linux*, mips64*-*-linux*): Add
mips/t-libgcc-mips16 to tmake_file.
* config/mips/mips-protos.h (mips_call_type): New enum.
(mips_pic_base_register, mips_got_load): Declare.
(mips_restore_gp): Take an rtx argument.
(mips_use_pic_fn_addr_reg_p): Declare.
(mips_expand_call): Replace the sibcall_p argument with
a mips_call_type argument. Add a lazy_p parameter.
(mips_split_call): Declare.
* config/mips/mips.h (MIPS16_PIC_TEMP_REGNUM): New macro.
(MIPS16_PIC_TEMP): Likewise.
(reg_class): Delete M16_NA_REGS.
(REG_CLASS_NAMES, REG_CLASS_CONTENTS): Update accordingly.
(SYMBOL_FLAG_BIND_NOW, SYMBOL_REF_BIND_NOW_P): New macros.
(mips_split_hi_p): Declare.
* config/mips/mips.c (mips_split_hi_p): New array.
(mips_regno_to_class): Change M16_NA_REGS entries to M16_REGS.
(mips_got_symbol_type_p): New function.
(mips_global_symbol_p): Check SYMBOL_REF_EXTERNAL_P.
(mips16_stub_function_p): New function.
(mips16_local_function_p): Likewise.
(mips_use_pic_fn_addr_reg_p): Likewise.
(mips_cannot_force_const_mem): Return false for HIGHs.
Extend CONST_INT and symbolic handling to MIPS16, using
mips_symbol_insns to check that the base symbol type is a
legitimate constant. Reject GOT-based constants if
TARGET_MIPS16_PCREL_LOADS.
(mips_const_insns): Check targetm.cannot_force_const_mem when
decomposing a symbolic base and a large offset.
(mips_emit_call_insn): Add ORIG_ADDR and ADDR parameters.
When calling a function that needs $25 from MIPS16 code,
move the target address into $25 separately and add a USE
to the call insn.
(mips16_gp_pseudo_reg): Insert the initializer immediately
before the first real insn.
(mips_pic_base_register, mips_got_load): New functions.
(mips_split_symbol): Generalize the name of the LO_SUM_OUT
parameter to LOW_OUT. Say that it can be any valid SET_SRC
when splitting a load-address operation. Split SYMBOL_GOT_DISP
constants and highs of SYMBOL_GOT_PAGE_OFST constants.
(mips_call_tls_get_addr): Update the call to mips_expand_call,
also passing NULL_RTX rather than const0_rtx as the aux argument.
(mips_rewrite_small_data_p): Check mips_lo_relocs and mips_split_p
instead of TARGET_EXPLICIT_RELOCS.
(mips_ok_for_lazy_binding_p): Check SYMBOL_REF_BIND_NOW_P.
(mips_load_call_address): Replace the sibcall_p argument with
a mips_call_type argument. Use mips_got_load.
(mips16_local_alias): New structure.
(mips16_local_aliases): New variable.
(mips16_local_aliases_hash): New function.
(mips16_local_aliases_eq): Likewise.
(mips16_local_alias): Likewise.
(mips16_stub_function): Likewise.
(mips16_build_function_stub): Create a local alias for the target
function. Handle TARGET_ABICALLS. For PIC abicalls, emit a
.cpload directive and an R_MIPS_NONE relocation for the target
function, then load the alias rather than the function itself.
Wrap the non-PIC abicalls version in ".option pic0/.option pic2".
(mips16_copy_fpr_return_value): Use mips16_stub_function and
mips_expand_call. Set SYMBOL_REF_BIND_NOW on the symbol.
(mips16_build_call_stub): Replace the FN parameter with an
FN_PTR parameter. Force the address into a register if it
isn't a call_insn_operand; don't rely on the caller to do this.
If a call to a locally-defined and locally-binding MIPS16
function must be made indirectly, redirect the call to the
function's local alias. Use mips16_stub_function_p,
mips16_stub_function, mips_expand_call and use_reg.
Set SYMBOL_FLAG_BIND_NOW on __mips_call_* symbols.
Use explicit %hi and %lo accesses where possible.
Use MIPS_CALL to generate the correct code form of a
jal instruction. Add clobbers of $18 instead of uses.
Update the call to mips_emit_call_insn.
(mips_expand_call): Replace the SIBCALL_P argument with a
mips_call_type argument and handle the new MIPS_CALL_EPILOGUE value.
Take a LAZY_P parameter. Call mips16_build_call_stub first,
allowing it to modify the call address. Update the calls to
mips_load_call_address and mips_emit_call_insn.
(mips_split_call): New function.
(mips_init_relocs): Clear mips_split_hi_p. Only use %gp_rel if
!TARGET_MIPS16. Split SYMBOL_GOT_DISP, and the high parts of
SYMBOL_GOT_PAGE_OFST, for MIPS16 code.
(mips_global_pointer): Check mips16_cfun_returns_in_fpr_p.
(mips_extra_live_on_entry): Include MIPS16_PIC_TEMP_REGNUM
if TARGET_MIPS16.
(mips_cprestore_slot): New function.
(mips_restore_gp): Take a TEMP parameter. Handle TARGET_MIPS16
and use mips_cprestore_slot.
(mips_output_function_prologue): Handle TARGET_MIPS16 for
LOADGP_OLDABI.
(mips_emit_loadgp): Move into MIPS16_PIC_TEMP for MIPS16,
then use a copygp_mips16 instruction to set up $28.
(mips_expand_prologue): Initialize the cprestore slot for MIPS16 too.
(mips16_lay_out_constants): Call split_all_insns_noflow.
(mips_reorg_process_insns): Explicitly set all_noreorder_p to
false if TARGET_MIPS16.
(mips_reorg): Don't call vr4130_align_insns if TARGET_MIPS16.
(mips_output_mi_thunk): Use mips_got_symbol_type_p. Use the
mips_dangerous_for_la25_p approach for MIPS16 PIC calls too.
(mips_set_mips16_mode): Always set MASK_EXPLICIT_RELOCS for
MIPS16 code. Allow MIPS16 o32 PIC.
(mips_override_options): Allow MIPS16 o32 PIC.
* config/mips/mips.md: Lower CONST_GP_P moves into register moves
after reload if TARGET_USE_GOT.
(UNSPEC_COPYGP): New constant.
(length): Use a default length of 8 for MIPS16 GOT loads.
(*got_disp<mode>): Check mips_split_p instead of TARGET_XGOT.
(*got_page<mode>): Check mips_split_hi_p.
(*got_disp<mode>, *got_page<mode>): Use mips_got_load.
(unspec_got<mode>, unspec_call<mode>): New expanders.
(load_got<mode>, load_call<mode>): Remove the length attributes.
Use a got attribute instead of a type attribute.
(copygp_mips16): New insn.
(restore_gp): Add a scratch clobber and pass it to mips_restore_gp.
(load_call<mode>): Use a "d" constraint instead of an "r" constraint.
(sibcall, sibcall_value, call, call_value): Update the calls
to mips_expand_call.
(call_internal, call_value_internal): Use mips_split_call.
(call_value_multiple_internal): Likewise.
(call_split): Move after call_internal (the insn it is split from).
(call_internal_direct, call_value_internal_direct): Turn into
define_insn_and_splits. Split if TARGET_SPLIT_CALLS.
(call_direct_split, call_value_direct_split): New patterns.
* config/mips/constraints.md (c): Handle TARGET_MIPS16 first
and use M16_REGS instead of M16_NA_REGS.
* config/mips/predicates.md (const_call_insn_operand): Replace
the TARGET_ABSOLUTE_ABICALLS-based check with a more general
mips_use_pic_fn_addr_reg_p check.
(move_operand): Reject HIGHs if mips_split_hi_p.
* config/mips/mips16.S: Assembly as empty if the ABI is not suitable.
(__mips16_floatunsisf): Inline __mips16_floatsisf.
(CALL_STUB_NO_RET, CALL_STUB_REG): Copy the target register to $25.
* config/mips/libgcc-mips16.ver: New file.
* config/mips/t-libgcc-mips16 (SHLIB_MAPFILES): Add
$(srcdir)/config/mips/libgcc-mips16.ver.
gcc/testsuite/
* lib/target-supports.exp (check_profiling_available): Return false
for -p and -pg on MIPS16 targets.
From-SVN: r138912
This directory contains machine-specific files for the GNU C compiler.
It has a subdirectory for each basic CPU type.
The only files in this directory itself
are some .h files that pertain to particular operating systems
and are used for more than one CPU type.
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