1 /* FR30 specific functions.
2 Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
3 Contributed by Cygnus Solutions.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
29 #include "hard-reg-set.h"
31 #include "insn-config.h"
32 #include "conditions.h"
34 #include "insn-attr.h"
44 #include "target-def.h"
47 /*{{{ Function Prologues & Epilogues */
49 /* Define the information needed to generate branch and scc insns. This is
50 stored from the compare operation. */
52 struct rtx_def * fr30_compare_op0;
53 struct rtx_def * fr30_compare_op1;
55 /* The FR30 stack looks like this:
57 Before call After call
59 +-----------------------+ +-----------------------+ high
61 | local variables, | | local variables, |
62 | reg save area, etc. | | reg save area, etc. |
64 +-----------------------+ +-----------------------+
66 | args to the func that | | args to this func. |
67 | is being called that | | |
68 SP ->| do not fit in regs | | |
69 +-----------------------+ +-----------------------+
70 | args that used to be | \
71 | in regs; only created | | pretend_size
72 AP-> | for vararg funcs | /
73 +-----------------------+
75 | register save area | |
77 +-----------------------+ | reg_size
79 +-----------------------+ |
80 FP ->| previous frame ptr | /
81 +-----------------------+
83 | local variables | | var_size
85 +-----------------------+
87 low | room for args to | |
88 memory | other funcs called | | args_size
91 +-----------------------+
93 Note, AP is a fake hard register. It will be eliminated in favour of
94 SP or FP as appropriate.
96 Note, Some or all of the stack sections above may be omitted if they
99 /* Structure to be filled in by fr30_compute_frame_size() with register
100 save masks, and offsets for the current function. */
101 struct fr30_frame_info
103 unsigned int total_size; /* # Bytes that the entire frame takes up. */
104 unsigned int pretend_size; /* # Bytes we push and pretend caller did. */
105 unsigned int args_size; /* # Bytes that outgoing arguments take up. */
106 unsigned int reg_size; /* # Bytes needed to store regs. */
107 unsigned int var_size; /* # Bytes that variables take up. */
108 unsigned int frame_size; /* # Bytes in current frame. */
109 unsigned int gmask; /* Mask of saved registers. */
110 unsigned int save_fp; /* Nonzero if frame pointer must be saved. */
111 unsigned int save_rp; /* Nonzero if return popinter must be saved. */
112 int initialised; /* Nonzero if frame size already calculated. */
115 /* Current frame information calculated by fr30_compute_frame_size(). */
116 static struct fr30_frame_info current_frame_info;
118 /* Zero structure to initialize current_frame_info. */
119 static struct fr30_frame_info zero_frame_info;
121 #define FRAME_POINTER_MASK (1 << (FRAME_POINTER_REGNUM))
122 #define RETURN_POINTER_MASK (1 << (RETURN_POINTER_REGNUM))
124 /* Tell prologue and epilogue if register REGNO should be saved / restored.
125 The return address and frame pointer are treated separately.
126 Don't consider them here. */
127 #define MUST_SAVE_REGISTER(regno) \
128 ( (regno) != RETURN_POINTER_REGNUM \
129 && (regno) != FRAME_POINTER_REGNUM \
130 && regs_ever_live [regno] \
131 && ! call_used_regs [regno] )
133 #define MUST_SAVE_FRAME_POINTER (regs_ever_live [FRAME_POINTER_REGNUM] || frame_pointer_needed)
134 #define MUST_SAVE_RETURN_POINTER (regs_ever_live [RETURN_POINTER_REGNUM] || profile_flag)
136 #if UNITS_PER_WORD == 4
137 #define WORD_ALIGN(SIZE) (((SIZE) + 3) & ~3)
140 /* Initialize the GCC target structure. */
142 struct gcc_target targetm = TARGET_INITIALIZER;
144 /* Returns the number of bytes offset between FROM_REG and TO_REG
145 for the current function. As a side effect it fills in the
146 current_frame_info structure, if the data is available. */
148 fr30_compute_frame_size (from_reg, to_reg)
153 unsigned int return_value;
154 unsigned int var_size;
155 unsigned int args_size;
156 unsigned int pretend_size;
157 unsigned int reg_size;
160 var_size = WORD_ALIGN (get_frame_size ());
161 args_size = WORD_ALIGN (current_function_outgoing_args_size);
162 pretend_size = current_function_pretend_args_size;
167 /* Calculate space needed for registers. */
168 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno ++)
170 if (MUST_SAVE_REGISTER (regno))
172 reg_size += UNITS_PER_WORD;
177 current_frame_info.save_fp = MUST_SAVE_FRAME_POINTER;
178 current_frame_info.save_rp = MUST_SAVE_RETURN_POINTER;
180 reg_size += (current_frame_info.save_fp + current_frame_info.save_rp)
183 /* Save computed information. */
184 current_frame_info.pretend_size = pretend_size;
185 current_frame_info.var_size = var_size;
186 current_frame_info.args_size = args_size;
187 current_frame_info.reg_size = reg_size;
188 current_frame_info.frame_size = args_size + var_size;
189 current_frame_info.total_size = args_size + var_size + reg_size + pretend_size;
190 current_frame_info.gmask = gmask;
191 current_frame_info.initialised = reload_completed;
193 /* Calculate the required distance. */
196 if (to_reg == STACK_POINTER_REGNUM)
197 return_value += args_size + var_size;
199 if (from_reg == ARG_POINTER_REGNUM)
200 return_value += reg_size;
205 /* Called after register allocation to add any instructions needed for the
206 prologue. Using a prologue insn is favored compared to putting all of the
207 instructions in output_function_prologue(), since it allows the scheduler
208 to intermix instructions with the saves of the caller saved registers. In
209 some cases, it might be necessary to emit a barrier instruction as the last
210 insn to prevent such scheduling. */
213 fr30_expand_prologue ()
218 if (! current_frame_info.initialised)
219 fr30_compute_frame_size (0, 0);
221 /* This cases shouldn't happen. Catch it now. */
222 if (current_frame_info.total_size == 0
223 && current_frame_info.gmask)
226 /* Allocate space for register arguments if this is a variadic function. */
227 if (current_frame_info.pretend_size)
229 int regs_to_save = current_frame_info.pretend_size / UNITS_PER_WORD;
231 /* Push argument registers into the pretend arg area. */
232 for (regno = FIRST_ARG_REGNUM + FR30_NUM_ARG_REGS; regno --, regs_to_save --;)
234 insn = emit_insn (gen_movsi_push (gen_rtx_REG (Pmode, regno)));
235 RTX_FRAME_RELATED_P (insn) = 1;
239 if (current_frame_info.gmask)
241 /* Save any needed call-saved regs. */
242 for (regno = STACK_POINTER_REGNUM; regno--;)
244 if ((current_frame_info.gmask & (1 << regno)) != 0)
246 insn = emit_insn (gen_movsi_push (gen_rtx_REG (Pmode, regno)));
247 RTX_FRAME_RELATED_P (insn) = 1;
252 /* Save return address if necessary. */
253 if (current_frame_info.save_rp)
255 insn = emit_insn (gen_movsi_push (gen_rtx_REG (Pmode,
256 RETURN_POINTER_REGNUM)));
257 RTX_FRAME_RELATED_P (insn) = 1;
260 /* Save old frame pointer and create new one, if necessary. */
261 if (current_frame_info.save_fp)
263 if (current_frame_info.frame_size < ((1 << 10) - UNITS_PER_WORD))
265 int enter_size = current_frame_info.frame_size + UNITS_PER_WORD;
268 insn = emit_insn (gen_enter_func (GEN_INT (enter_size)));
269 RTX_FRAME_RELATED_P (insn) = 1;
271 pattern = PATTERN (insn);
273 /* Also mark all 3 subexpressions as RTX_FRAME_RELATED_P. */
274 if (GET_CODE (pattern) == PARALLEL)
277 for (x = XVECLEN (pattern, 0); x--;)
279 rtx part = XVECEXP (pattern, 0, x);
281 /* One of the insns in the ENTER pattern updates the
282 frame pointer. If we do not actually need the frame
283 pointer in this function then this is a side effect
284 rather than a desired effect, so we do not mark that
285 insn as being related to the frame set up. Doing this
286 allows us to compile the crash66.C test file in the
288 if (! frame_pointer_needed
289 && GET_CODE (part) == SET
290 && REGNO (SET_DEST (part)) == HARD_FRAME_POINTER_REGNUM)
291 RTX_FRAME_RELATED_P (part) = 0;
293 RTX_FRAME_RELATED_P (part) = 1;
299 insn = emit_insn (gen_movsi_push (frame_pointer_rtx));
300 RTX_FRAME_RELATED_P (insn) = 1;
302 if (frame_pointer_needed)
304 insn = emit_insn (gen_movsi (frame_pointer_rtx, stack_pointer_rtx));
305 RTX_FRAME_RELATED_P (insn) = 1;
310 /* Allocate the stack frame. */
311 if (current_frame_info.frame_size == 0)
312 ; /* Nothing to do. */
313 else if (current_frame_info.save_fp
314 && current_frame_info.frame_size < ((1 << 10) - UNITS_PER_WORD))
315 ; /* Nothing to do. */
316 else if (current_frame_info.frame_size <= 512)
318 insn = emit_insn (gen_add_to_stack (GEN_INT (- current_frame_info.frame_size)));
319 RTX_FRAME_RELATED_P (insn) = 1;
323 rtx tmp = gen_rtx_REG (Pmode, PROLOGUE_TMP_REGNUM);
324 insn = emit_insn (gen_movsi (tmp, GEN_INT (current_frame_info.frame_size)));
325 RTX_FRAME_RELATED_P (insn) = 1;
326 insn = emit_insn (gen_subsi3 (stack_pointer_rtx, stack_pointer_rtx, tmp));
327 RTX_FRAME_RELATED_P (insn) = 1;
330 if (profile_flag || profile_block_flag)
331 emit_insn (gen_blockage ());
334 /* Called after register allocation to add any instructions needed for the
335 epilogue. Using a epilogue insn is favored compared to putting all of the
336 instructions in output_function_epilogue(), since it allows the scheduler
337 to intermix instructions with the restores of the caller saved registers.
338 In some cases, it might be necessary to emit a barrier instruction as the
339 first insn to prevent such scheduling. */
341 fr30_expand_epilogue ()
345 /* Perform the inversion operations of the prologue. */
346 if (! current_frame_info.initialised)
349 /* Pop local variables and arguments off the stack.
350 If frame_pointer_needed is TRUE then the frame pointer register
351 has actually been used as a frame pointer, and we can recover
352 the stack pointer from it, otherwise we must unwind the stack
354 if (current_frame_info.frame_size > 0)
356 if (current_frame_info.save_fp && frame_pointer_needed)
358 emit_insn (gen_leave_func ());
359 current_frame_info.save_fp = 0;
361 else if (current_frame_info.frame_size <= 508)
362 emit_insn (gen_add_to_stack
363 (GEN_INT (current_frame_info.frame_size)));
366 rtx tmp = gen_rtx_REG (Pmode, PROLOGUE_TMP_REGNUM);
367 emit_insn (gen_movsi (tmp, GEN_INT (current_frame_info.frame_size)));
368 emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx, tmp));
372 if (current_frame_info.save_fp)
373 emit_insn (gen_movsi_pop (frame_pointer_rtx));
375 /* Pop all the registers that were pushed. */
376 if (current_frame_info.save_rp)
377 emit_insn (gen_movsi_pop (gen_rtx_REG (Pmode, RETURN_POINTER_REGNUM)));
379 for (regno = 0; regno < STACK_POINTER_REGNUM; regno ++)
380 if (current_frame_info.gmask & (1 << regno))
381 emit_insn (gen_movsi_pop (gen_rtx_REG (Pmode, regno)));
383 if (current_frame_info.pretend_size)
384 emit_insn (gen_add_to_stack (GEN_INT (current_frame_info.pretend_size)));
386 /* Reset state info for each function. */
387 current_frame_info = zero_frame_info;
389 emit_jump_insn (gen_return_from_func ());
392 /* Do any needed setup for a variadic function. We must create a register
393 parameter block, and then copy any anonymous arguments, plus the last
394 named argument, from registers into memory. * copying actually done in
395 fr30_expand_prologue().
397 ARG_REGS_USED_SO_FAR has *not* been updated for the last named argument
398 which has type TYPE and mode MODE, and we rely on this fact. */
400 fr30_setup_incoming_varargs (arg_regs_used_so_far, int_mode, type, pretend_size)
401 CUMULATIVE_ARGS arg_regs_used_so_far;
403 tree type ATTRIBUTE_UNUSED;
406 enum machine_mode mode = (enum machine_mode)int_mode;
410 /* All BLKmode values are passed by reference. */
414 #if STRICT_ARGUMENT_NAMING
415 /* We must treat `__builtin_va_alist' as an anonymous arg.
416 But otherwise if STRICT_ARGUMENT_NAMING is true then the
417 last named arg must not be treated as an anonymous arg. */
418 if (! current_function_varargs)
419 arg_regs_used_so_far += fr30_num_arg_regs (int_mode, type);
422 size = FR30_NUM_ARG_REGS - arg_regs_used_so_far;
427 * pretend_size = (size * UNITS_PER_WORD);
431 /*{{{ Printing operands */
433 /* Print a memory address as an operand to reference that memory location. */
436 fr30_print_operand_address (stream, address)
440 switch (GET_CODE (address))
443 output_addr_const (stream, address);
447 fprintf (stderr, "code = %x\n", GET_CODE (address));
449 output_operand_lossage ("fr30_print_operand_address: unhandled address");
454 /* Print an operand. */
457 fr30_print_operand (file, x, code)
467 /* Output a :D if this instruction is delayed. */
468 if (dbr_sequence_length () != 0)
473 /* Compute the register name of the second register in a hi/lo
475 if (GET_CODE (x) != REG)
476 output_operand_lossage ("fr30_print_operand: unrecognised %p code");
478 fprintf (file, "r%d", REGNO (x) + 1);
482 /* Convert GCC's comparison operators into FR30 comparison codes. */
483 switch (GET_CODE (x))
485 case EQ: fprintf (file, "eq"); break;
486 case NE: fprintf (file, "ne"); break;
487 case LT: fprintf (file, "lt"); break;
488 case LE: fprintf (file, "le"); break;
489 case GT: fprintf (file, "gt"); break;
490 case GE: fprintf (file, "ge"); break;
491 case LTU: fprintf (file, "c"); break;
492 case LEU: fprintf (file, "ls"); break;
493 case GTU: fprintf (file, "hi"); break;
494 case GEU: fprintf (file, "nc"); break;
496 output_operand_lossage ("fr30_print_operand: unrecognised %b code");
502 /* Convert GCC's comparison operators into the complimentary FR30
504 switch (GET_CODE (x))
506 case EQ: fprintf (file, "ne"); break;
507 case NE: fprintf (file, "eq"); break;
508 case LT: fprintf (file, "ge"); break;
509 case LE: fprintf (file, "gt"); break;
510 case GT: fprintf (file, "le"); break;
511 case GE: fprintf (file, "lt"); break;
512 case LTU: fprintf (file, "nc"); break;
513 case LEU: fprintf (file, "hi"); break;
514 case GTU: fprintf (file, "ls"); break;
515 case GEU: fprintf (file, "c"); break;
517 output_operand_lossage ("fr30_print_operand: unrecognised %B code");
523 /* Print a signed byte value as an unsigned value. */
524 if (GET_CODE (x) != CONST_INT)
525 output_operand_lossage ("fr30_print_operand: invalid operand to %A code");
534 fprintf (file, "%d", val);
539 if (GET_CODE (x) != CONST_INT
542 output_operand_lossage ("fr30_print_operand: invalid %x code");
544 fprintf (file, "%d", INTVAL (x) - 16);
548 if (GET_CODE (x) != CONST_DOUBLE)
549 output_operand_lossage ("fr30_print_operand: invalid %F code");
554 REAL_VALUE_FROM_CONST_DOUBLE (d, x);
555 fprintf (file, "%.8f", d);
564 fprintf (stderr, "unknown code = %x\n", code);
565 output_operand_lossage ("fr30_print_operand: unknown code");
569 switch (GET_CODE (x))
572 fputs (reg_names [REGNO (x)], file);
578 switch (GET_CODE (x0))
581 if ((unsigned) REGNO (x0) >= ARRAY_SIZE (reg_names))
583 fprintf (file, "@%s", reg_names [REGNO (x0)]);
587 if (GET_CODE (XEXP (x0, 0)) != REG
588 || REGNO (XEXP (x0, 0)) < FRAME_POINTER_REGNUM
589 || REGNO (XEXP (x0, 0)) > STACK_POINTER_REGNUM
590 || GET_CODE (XEXP (x0, 1)) != CONST_INT)
592 fprintf (stderr, "bad INDEXed address:");
594 output_operand_lossage ("fr30_print_operand: unhandled MEM");
596 else if (REGNO (XEXP (x0, 0)) == FRAME_POINTER_REGNUM)
598 HOST_WIDE_INT val = INTVAL (XEXP (x0, 1));
599 if (val < -(1 << 9) || val > ((1 << 9) - 4))
601 fprintf (stderr, "frame INDEX out of range:");
603 output_operand_lossage ("fr30_print_operand: unhandled MEM");
605 fprintf (file, "@(r14, #%d)", val);
609 HOST_WIDE_INT val = INTVAL (XEXP (x0, 1));
610 if (val < 0 || val > ((1 << 6) - 4))
612 fprintf (stderr, "stack INDEX out of range:");
614 output_operand_lossage ("fr30_print_operand: unhandled MEM");
616 fprintf (file, "@(r15, #%d)", val);
625 fprintf (stderr, "bad MEM code = %x\n", GET_CODE (x0));
627 output_operand_lossage ("fr30_print_operand: unhandled MEM");
633 /* We handle SFmode constants here as output_addr_const doesn't. */
634 if (GET_MODE (x) == SFmode)
639 REAL_VALUE_FROM_CONST_DOUBLE (d, x);
640 REAL_VALUE_TO_TARGET_SINGLE (d, l);
641 fprintf (file, "0x%08lx", l);
645 /* Fall through. Let output_addr_const deal with it. */
647 output_addr_const (file, x);
655 /*{{{ Function arguments */
657 /* Compute the number of word sized registers needed to hold a
658 function argument of mode INT_MODE and tree type TYPE. */
660 fr30_num_arg_regs (int_mode, type)
664 enum machine_mode mode = (enum machine_mode) int_mode;
667 if (MUST_PASS_IN_STACK (mode, type))
670 if (type && mode == BLKmode)
671 size = int_size_in_bytes (type);
673 size = GET_MODE_SIZE (mode);
675 return (size + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
678 /* Implements the FUNCTION_ARG_PARTIAL_NREGS macro.
679 Returns the number of argument registers required to hold *part* of
680 a parameter of machine mode MODE and tree type TYPE (which may be
681 NULL if the type is not known). If the argument fits entirly in
682 the argument registers, or entirely on the stack, then 0 is returned.
683 CUM is the number of argument registers already used by earlier
684 parameters to the function. */
687 fr30_function_arg_partial_nregs (cum, int_mode, type, named)
693 /* Unnamed arguments, ie those that are prototyped as ...
694 are always passed on the stack.
695 Also check here to see if all the argument registers are full. */
696 if (named == 0 || cum >= FR30_NUM_ARG_REGS)
699 /* Work out how many argument registers would be needed if this
700 parameter were to be passed entirely in registers. If there
701 are sufficient argument registers available (or if no registers
702 are needed because the parameter must be passed on the stack)
703 then return zero, as this parameter does not require partial
704 register, partial stack stack space. */
705 if (cum + fr30_num_arg_regs (int_mode, type) <= FR30_NUM_ARG_REGS)
708 /* Otherwise return the number of registers that would be used. */
709 return FR30_NUM_ARG_REGS - cum;
713 fr30_pass_by_reference (valist, type)
721 type_ptr = build_pointer_type (type);
722 type_ptr_ptr = build_pointer_type (type_ptr);
724 t = build (POSTINCREMENT_EXPR, va_list_type_node, valist, build_int_2 (UNITS_PER_WORD, 0));
725 TREE_SIDE_EFFECTS (t) = 1;
726 t = build1 (NOP_EXPR, type_ptr_ptr, t);
727 TREE_SIDE_EFFECTS (t) = 1;
728 t = build1 (INDIRECT_REF, type_ptr, t);
730 return expand_expr (t, NULL_RTX, Pmode, EXPAND_NORMAL);
734 fr30_pass_by_value (valist, type)
738 HOST_WIDE_INT size = int_size_in_bytes (type);
743 if ((size % UNITS_PER_WORD) == 0)
745 t = build (POSTINCREMENT_EXPR, va_list_type_node, valist, build_int_2 (size, 0));
746 TREE_SIDE_EFFECTS (t) = 1;
748 return expand_expr (t, NULL_RTX, Pmode, EXPAND_NORMAL);
751 rsize = (size + UNITS_PER_WORD - 1) & - UNITS_PER_WORD;
753 /* Care for bigendian correction on the aligned address. */
754 t = build (PLUS_EXPR, ptr_type_node, valist, build_int_2 (rsize - size, 0));
755 addr_rtx = expand_expr (t, NULL_RTX, Pmode, EXPAND_NORMAL);
756 addr_rtx = copy_to_reg (addr_rtx);
759 t = build (PLUS_EXPR, va_list_type_node, valist, build_int_2 (rsize, 0));
760 t = build (MODIFY_EXPR, va_list_type_node, valist, t);
761 TREE_SIDE_EFFECTS (t) = 1;
762 expand_expr (t, const0_rtx, VOIDmode, EXPAND_NORMAL);
767 /* Implement `va_arg'. */
770 fr30_va_arg (valist, type)
776 if (AGGREGATE_TYPE_P (type))
777 return fr30_pass_by_reference (valist, type);
779 size = int_size_in_bytes (type);
781 if ((size % sizeof (int)) == 0
783 return fr30_pass_by_value (valist, type);
785 return fr30_pass_by_reference (valist, type);
789 /*{{{ Operand predicates */
792 #define Mmode enum machine_mode
795 /* Returns true if OPERAND is an integer value suitable for use in
796 an ADDSP instruction. */
798 stack_add_operand (operand, mode)
800 Mmode mode ATTRIBUTE_UNUSED;
803 (GET_CODE (operand) == CONST_INT
804 && INTVAL (operand) >= -512
805 && INTVAL (operand) <= 508
806 && ((INTVAL (operand) & 3) == 0));
809 /* Returns true if OPERAND is an integer value suitable for use in
810 an ADD por ADD2 instruction, or if it is a register. */
812 add_immediate_operand (operand, mode)
814 Mmode mode ATTRIBUTE_UNUSED;
817 (GET_CODE (operand) == REG
818 || (GET_CODE (operand) == CONST_INT
819 && INTVAL (operand) >= -16
820 && INTVAL (operand) <= 15));
823 /* Returns true if OPERAND is hard register in the range 8 - 15. */
825 high_register_operand (operand, mode)
827 Mmode mode ATTRIBUTE_UNUSED;
830 (GET_CODE (operand) == REG
831 && REGNO (operand) <= 15
832 && REGNO (operand) >= 8);
835 /* Returns true if OPERAND is hard register in the range 0 - 7. */
837 low_register_operand (operand, mode)
839 Mmode mode ATTRIBUTE_UNUSED;
842 (GET_CODE (operand) == REG
843 && REGNO (operand) <= 7);
846 /* Returns true if OPERAND is suitable for use in a CALL insn. */
848 call_operand (operand, mode)
850 Mmode mode ATTRIBUTE_UNUSED;
852 return (GET_CODE (operand) == MEM
853 && (GET_CODE (XEXP (operand, 0)) == SYMBOL_REF
854 || GET_CODE (XEXP (operand, 0)) == REG));
857 /* Returns TRUE if OP is a valid operand of a DImode operation. */
859 di_operand (op, mode)
863 if (register_operand (op, mode))
866 if (mode != VOIDmode && GET_MODE (op) != VOIDmode && GET_MODE (op) != DImode)
869 if (GET_CODE (op) == SUBREG)
870 op = SUBREG_REG (op);
872 switch (GET_CODE (op))
879 return memory_address_p (DImode, XEXP (op, 0));
886 /* Returns TRUE if OP is a DImode register or MEM. */
888 nonimmediate_di_operand (op, mode)
892 if (register_operand (op, mode))
895 if (mode != VOIDmode && GET_MODE (op) != VOIDmode && GET_MODE (op) != DImode)
898 if (GET_CODE (op) == SUBREG)
899 op = SUBREG_REG (op);
901 if (GET_CODE (op) == MEM)
902 return memory_address_p (DImode, XEXP (op, 0));
907 /* Returns true iff all the registers in the operands array
908 are in descending or ascending order. */
910 fr30_check_multiple_regs (operands, num_operands, descending)
917 unsigned int prev_regno = 0;
919 while (num_operands --)
921 if (GET_CODE (operands [num_operands]) != REG)
924 if (REGNO (operands [num_operands]) < prev_regno)
927 prev_regno = REGNO (operands [num_operands]);
932 unsigned int prev_regno = CONDITION_CODE_REGNUM;
934 while (num_operands --)
936 if (GET_CODE (operands [num_operands]) != REG)
939 if (REGNO (operands [num_operands]) > prev_regno)
942 prev_regno = REGNO (operands [num_operands]);
950 /*{{{ Instruction Output Routines */
952 /* Output a double word move.
953 It must be REG<-REG, REG<-MEM, MEM<-REG or REG<-CONST.
954 On the FR30 we are contrained by the fact that it does not
955 support offsetable addresses, and so we have to load the
956 address of the secnd word into the second destination register
957 before we can use it. */
960 fr30_move_double (operands)
963 rtx src = operands[1];
964 rtx dest = operands[0];
965 enum rtx_code src_code = GET_CODE (src);
966 enum rtx_code dest_code = GET_CODE (dest);
967 enum machine_mode mode = GET_MODE (dest);
972 if (dest_code == REG)
976 int reverse = (REGNO (dest) == REGNO (src) + 1);
978 /* We normally copy the low-numbered register first. However, if
979 the first register of operand 0 is the same as the second register
980 of operand 1, we must copy in the opposite order. */
981 emit_insn (gen_rtx_SET (VOIDmode,
982 operand_subword (dest, reverse, TRUE, mode),
983 operand_subword (src, reverse, TRUE, mode)));
985 emit_insn (gen_rtx_SET (VOIDmode,
986 operand_subword (dest, !reverse, TRUE, mode),
987 operand_subword (src, !reverse, TRUE, mode)));
989 else if (src_code == MEM)
991 rtx addr = XEXP (src, 0);
992 int dregno = REGNO (dest);
997 /* If the high-address word is used in the address, we
998 must load it last. Otherwise, load it first. */
999 int reverse = (refers_to_regno_p (dregno, dregno + 1, addr, 0) != 0);
1001 if (GET_CODE (addr) != REG)
1004 dest0 = operand_subword (dest, reverse, TRUE, mode);
1005 dest1 = operand_subword (dest, !reverse, TRUE, mode);
1009 emit_insn (gen_rtx_SET (VOIDmode, dest1,
1010 adjust_address (src, SImode, 0)));
1011 emit_insn (gen_rtx_SET (SImode, dest0,
1012 gen_rtx_REG (SImode, REGNO (addr))));
1013 emit_insn (gen_rtx_SET (SImode, dest0,
1014 plus_constant (dest0, UNITS_PER_WORD)));
1016 new_mem = gen_rtx_MEM (SImode, dest0);
1017 MEM_COPY_ATTRIBUTES (new_mem, src);
1019 emit_insn (gen_rtx_SET (VOIDmode, dest0, new_mem));
1023 emit_insn (gen_rtx_SET (VOIDmode, dest0,
1024 adjust_address (src, SImode, 0)));
1025 emit_insn (gen_rtx_SET (SImode, dest1,
1026 gen_rtx_REG (SImode, REGNO (addr))));
1027 emit_insn (gen_rtx_SET (SImode, dest1,
1028 plus_constant (dest1, UNITS_PER_WORD)));
1030 new_mem = gen_rtx_MEM (SImode, dest1);
1031 MEM_COPY_ATTRIBUTES (new_mem, src);
1033 emit_insn (gen_rtx_SET (VOIDmode, dest1, new_mem));
1036 else if (src_code == CONST_INT || src_code == CONST_DOUBLE)
1039 split_double (src, &words[0], &words[1]);
1040 emit_insn (gen_rtx_SET (VOIDmode,
1041 operand_subword (dest, 0, TRUE, mode),
1044 emit_insn (gen_rtx_SET (VOIDmode,
1045 operand_subword (dest, 1, TRUE, mode),
1049 else if (src_code == REG && dest_code == MEM)
1051 rtx addr = XEXP (dest, 0);
1055 if (GET_CODE (addr) != REG)
1058 src0 = operand_subword (src, 0, TRUE, mode);
1059 src1 = operand_subword (src, 1, TRUE, mode);
1061 emit_insn (gen_rtx_SET (VOIDmode, adjust_address (dest, SImode, 0),
1064 if (REGNO (addr) == STACK_POINTER_REGNUM
1065 || REGNO (addr) == FRAME_POINTER_REGNUM)
1066 emit_insn (gen_rtx_SET (VOIDmode,
1067 adjust_address (dest, SImode, UNITS_PER_WORD),
1073 /* We need a scratch register to hold the value of 'address + 4'.
1074 We ought to allow gcc to find one for us, but for now, just
1075 push one of the source registers. */
1076 emit_insn (gen_movsi_push (src0));
1077 emit_insn (gen_movsi_internal (src0, addr));
1078 emit_insn (gen_addsi_small_int (src0, src0, GEN_INT (UNITS_PER_WORD)));
1080 new_mem = gen_rtx_MEM (SImode, src0);
1081 MEM_COPY_ATTRIBUTES (new_mem, dest);
1083 emit_insn (gen_rtx_SET (VOIDmode, new_mem, src1));
1084 emit_insn (gen_movsi_pop (src0));
1088 /* This should have been prevented by the contraints on movdi_insn. */
1091 val = gen_sequence ();