1 /* Subroutines for insn-output.c for Motorola 68000 family.
2 Copyright (C) 1987, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003
3 Free Software Foundation, Inc.
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. */
24 #include "coretypes.h"
30 #include "hard-reg-set.h"
32 #include "insn-config.h"
33 #include "conditions.h"
35 #include "insn-attr.h"
42 #include "target-def.h"
45 /* Needed for use_return_insn. */
48 /* This flag is used to communicate between movhi and ASM_OUTPUT_CASE_END,
49 if SGS_SWITCH_TABLE. */
50 int switch_table_difference_label_flag;
52 static rtx find_addr_reg (rtx);
53 static const char *singlemove_string (rtx *);
54 static void m68k_output_function_prologue (FILE *, HOST_WIDE_INT);
55 static void m68k_output_function_epilogue (FILE *, HOST_WIDE_INT);
56 static void m68k_coff_asm_named_section (const char *, unsigned int);
57 #ifdef CTOR_LIST_BEGIN
58 static void m68k_svr3_asm_out_constructor (rtx, int);
61 static void m68k_hp320_internal_label (FILE *, const char *, unsigned long);
62 static void m68k_hp320_file_start (void);
64 static void m68k_output_mi_thunk (FILE *, tree, HOST_WIDE_INT,
66 static int m68k_save_reg (unsigned int);
67 static int const_int_cost (rtx);
68 static bool m68k_rtx_costs (rtx, int, int, int *);
71 /* Alignment to use for loops and jumps */
72 /* Specify power of two alignment used for loops. */
73 const char *m68k_align_loops_string;
74 /* Specify power of two alignment used for non-loop jumps. */
75 const char *m68k_align_jumps_string;
76 /* Specify power of two alignment used for functions. */
77 const char *m68k_align_funcs_string;
79 /* Specify power of two alignment used for loops. */
81 /* Specify power of two alignment used for non-loop jumps. */
83 /* Specify power of two alignment used for functions. */
86 /* Nonzero if the last compare/test insn had FP operands. The
87 sCC expanders peek at this to determine what to do for the
88 68060, which has no fsCC instructions. */
89 int m68k_last_compare_had_fp_operands;
91 /* Initialize the GCC target structure. */
93 #if INT_OP_GROUP == INT_OP_DOT_WORD
94 #undef TARGET_ASM_ALIGNED_HI_OP
95 #define TARGET_ASM_ALIGNED_HI_OP "\t.word\t"
98 #if INT_OP_GROUP == INT_OP_NO_DOT
99 #undef TARGET_ASM_BYTE_OP
100 #define TARGET_ASM_BYTE_OP "\tbyte\t"
101 #undef TARGET_ASM_ALIGNED_HI_OP
102 #define TARGET_ASM_ALIGNED_HI_OP "\tshort\t"
103 #undef TARGET_ASM_ALIGNED_SI_OP
104 #define TARGET_ASM_ALIGNED_SI_OP "\tlong\t"
107 #if INT_OP_GROUP == INT_OP_DC
108 #undef TARGET_ASM_BYTE_OP
109 #define TARGET_ASM_BYTE_OP "\tdc.b\t"
110 #undef TARGET_ASM_ALIGNED_HI_OP
111 #define TARGET_ASM_ALIGNED_HI_OP "\tdc.w\t"
112 #undef TARGET_ASM_ALIGNED_SI_OP
113 #define TARGET_ASM_ALIGNED_SI_OP "\tdc.l\t"
116 #undef TARGET_ASM_UNALIGNED_HI_OP
117 #define TARGET_ASM_UNALIGNED_HI_OP TARGET_ASM_ALIGNED_HI_OP
118 #undef TARGET_ASM_UNALIGNED_SI_OP
119 #define TARGET_ASM_UNALIGNED_SI_OP TARGET_ASM_ALIGNED_SI_OP
121 #undef TARGET_ASM_FUNCTION_PROLOGUE
122 #define TARGET_ASM_FUNCTION_PROLOGUE m68k_output_function_prologue
123 #undef TARGET_ASM_FUNCTION_EPILOGUE
124 #define TARGET_ASM_FUNCTION_EPILOGUE m68k_output_function_epilogue
126 #undef TARGET_ASM_INTERNAL_LABEL
127 #define TARGET_ASM_INTERNAL_LABEL m68k_hp320_internal_label
130 #undef TARGET_ASM_OUTPUT_MI_THUNK
131 #define TARGET_ASM_OUTPUT_MI_THUNK m68k_output_mi_thunk
132 #undef TARGET_ASM_CAN_OUTPUT_MI_THUNK
133 #define TARGET_ASM_CAN_OUTPUT_MI_THUNK default_can_output_mi_thunk_no_vcall
135 #undef TARGET_ASM_FILE_START_APP_OFF
136 #define TARGET_ASM_FILE_START_APP_OFF true
138 #undef TARGET_RTX_COSTS
139 #define TARGET_RTX_COSTS m68k_rtx_costs
141 struct gcc_target targetm = TARGET_INITIALIZER;
143 /* Sometimes certain combinations of command options do not make
144 sense on a particular target machine. You can define a macro
145 `OVERRIDE_OPTIONS' to take account of this. This macro, if
146 defined, is executed once just after all the command options have
149 Don't use this macro to turn on various extra optimizations for
150 `-O'. That is what `OPTIMIZATION_OPTIONS' is for. */
153 override_options (void)
160 /* Validate -malign-loops= value, or provide default */
161 m68k_align_loops = def_align;
162 if (m68k_align_loops_string)
164 i = atoi (m68k_align_loops_string);
165 if (i < 1 || i > MAX_CODE_ALIGN)
166 error ("-malign-loops=%d is not between 1 and %d", i, MAX_CODE_ALIGN);
168 m68k_align_loops = i;
171 /* Validate -malign-jumps= value, or provide default */
172 m68k_align_jumps = def_align;
173 if (m68k_align_jumps_string)
175 i = atoi (m68k_align_jumps_string);
176 if (i < 1 || i > MAX_CODE_ALIGN)
177 error ("-malign-jumps=%d is not between 1 and %d", i, MAX_CODE_ALIGN);
179 m68k_align_jumps = i;
182 /* Validate -malign-functions= value, or provide default */
183 m68k_align_funcs = def_align;
184 if (m68k_align_funcs_string)
186 i = atoi (m68k_align_funcs_string);
187 if (i < 1 || i > MAX_CODE_ALIGN)
188 error ("-malign-functions=%d is not between 1 and %d",
191 m68k_align_funcs = i;
194 /* -fPIC uses 32-bit pc-relative displacements, which don't exist
196 if (! TARGET_68020 && flag_pic == 2)
197 error("-fPIC is not currently supported on the 68000 or 68010\n");
199 /* ??? A historic way of turning on pic, or is this intended to
200 be an embedded thing that doesn't have the same name binding
201 significance that it does on hosted ELF systems? */
202 if (TARGET_PCREL && flag_pic == 0)
205 /* Turn off function cse if we are doing PIC. We always want function call
206 to be done as `bsr foo@PLTPC', so it will force the assembler to create
207 the PLT entry for `foo'. Doing function cse will cause the address of
208 `foo' to be loaded into a register, which is exactly what we want to
209 avoid when we are doing PIC on svr4 m68k. */
211 flag_no_function_cse = 1;
213 SUBTARGET_OVERRIDE_OPTIONS;
215 /* Tell the compiler which flavor of XFmode we're using. */
216 real_format_for_mode[XFmode - QFmode] = &ieee_extended_motorola_format;
219 /* Return 1 if we need to save REGNO. */
221 m68k_save_reg (unsigned int regno)
223 if (flag_pic && current_function_uses_pic_offset_table
224 && regno == PIC_OFFSET_TABLE_REGNUM)
227 if (current_function_calls_eh_return)
232 unsigned int test = EH_RETURN_DATA_REGNO (i);
233 if (test == INVALID_REGNUM)
240 return (regs_ever_live[regno]
241 && !call_used_regs[regno]
242 && !fixed_regs[regno]
243 && !(regno == FRAME_POINTER_REGNUM && frame_pointer_needed));
246 /* This function generates the assembly code for function entry.
247 STREAM is a stdio stream to output the code to.
248 SIZE is an int: how many units of temporary storage to allocate.
249 Refer to the array `regs_ever_live' to determine which registers
250 to save; `regs_ever_live[I]' is nonzero if register number I
251 is ever used in the function. This function is responsible for
252 knowing which registers should not be saved even if used. */
255 /* Note that the order of the bit mask for fmovem is the opposite
256 of the order for movem! */
259 m68k_output_function_prologue (FILE *stream, HOST_WIDE_INT size)
262 register int mask = 0;
263 int num_saved_regs = 0;
264 HOST_WIDE_INT fsize = (size + 3) & -4;
265 HOST_WIDE_INT cfa_offset = INCOMING_FRAME_SP_OFFSET;
266 HOST_WIDE_INT cfa_store_offset = cfa_offset;
268 /* If the stack limit is a symbol, we can check it here,
269 before actually allocating the space. */
270 if (current_function_limit_stack
271 && GET_CODE (stack_limit_rtx) == SYMBOL_REF)
273 #if defined (MOTOROLA)
274 asm_fprintf (stream, "\tcmp.l %I%s+%wd,%Rsp\n\ttrapcs\n",
275 XSTR (stack_limit_rtx, 0), fsize + 4);
277 asm_fprintf (stream, "\tcmpl %I%s+%wd,%Rsp\n\ttrapcs\n",
278 XSTR (stack_limit_rtx, 0), fsize + 4);
282 if (frame_pointer_needed)
284 if (fsize == 0 && TARGET_68040)
286 /* on the 68040, pea + move is faster than link.w 0 */
288 fprintf (stream, "\tpea (%s)\n\tmove.l %s,%s\n",
289 reg_names[FRAME_POINTER_REGNUM],
290 reg_names[STACK_POINTER_REGNUM],
291 reg_names[FRAME_POINTER_REGNUM]);
293 fprintf (stream, "\tpea %s@\n\tmovel %s,%s\n",
294 reg_names[FRAME_POINTER_REGNUM],
295 reg_names[STACK_POINTER_REGNUM],
296 reg_names[FRAME_POINTER_REGNUM]);
299 else if (fsize < 0x8000)
302 asm_fprintf (stream, "\tlink.w %s,%I%wd\n",
303 reg_names[FRAME_POINTER_REGNUM], -fsize);
305 asm_fprintf (stream, "\tlink %s,%I%wd\n",
306 reg_names[FRAME_POINTER_REGNUM], -fsize);
309 else if (TARGET_68020)
312 asm_fprintf (stream, "\tlink.l %s,%I%wd\n",
313 reg_names[FRAME_POINTER_REGNUM], -fsize);
315 asm_fprintf (stream, "\tlink %s,%I%wd\n",
316 reg_names[FRAME_POINTER_REGNUM], -fsize);
321 /* Adding negative number is faster on the 68040. */
323 asm_fprintf (stream, "\tlink.w %s,%I0\n\tadd.l %I%wd,%Rsp\n",
324 reg_names[FRAME_POINTER_REGNUM], -fsize);
326 asm_fprintf (stream, "\tlink %s,%I0\n\taddl %I%wd,%Rsp\n",
327 reg_names[FRAME_POINTER_REGNUM], -fsize);
330 if (dwarf2out_do_frame ())
333 l = (char *) dwarf2out_cfi_label ();
334 cfa_store_offset += 4;
335 cfa_offset = cfa_store_offset;
336 dwarf2out_reg_save (l, FRAME_POINTER_REGNUM, -cfa_store_offset);
337 dwarf2out_def_cfa (l, FRAME_POINTER_REGNUM, cfa_offset);
338 cfa_store_offset += fsize;
343 if (fsize + 4 < 0x8000)
347 if (!TARGET_COLDFIRE)
349 /* asm_fprintf() cannot handle %. */
351 asm_fprintf (stream, "\tsubq.w %I%wd,%Rsp\n", fsize + 4);
353 asm_fprintf (stream, "\tsubqw %I%wd,%Rsp\n", fsize + 4);
358 /* asm_fprintf() cannot handle %. */
360 asm_fprintf (stream, "\tsubq.l %I%wd,%Rsp\n", fsize + 4);
362 asm_fprintf (stream, "\tsubql %I%wd,%Rsp\n", fsize + 4);
366 else if (fsize + 4 <= 16 && TARGET_CPU32)
368 /* On the CPU32 it is faster to use two subqw instructions to
369 subtract a small integer (8 < N <= 16) to a register. */
370 /* asm_fprintf() cannot handle %. */
373 "\tsubq.w %I8,%Rsp\n\tsubq.w %I%wd,%Rsp\n",
376 asm_fprintf (stream, "\tsubqw %I8,%Rsp\n\tsubqw %I%wd,%Rsp\n",
380 else if (TARGET_68040)
382 /* Adding negative number is faster on the 68040. */
383 /* asm_fprintf() cannot handle %. */
385 asm_fprintf (stream, "\tadd.w %I%wd,%Rsp\n", - (fsize + 4));
387 asm_fprintf (stream, "\taddw %I%wd,%Rsp\n", - (fsize + 4));
393 asm_fprintf (stream, "\tlea (%wd,%Rsp),%Rsp\n", - (fsize + 4));
395 asm_fprintf (stream, "\tlea %Rsp@(%wd),%Rsp\n", - (fsize + 4));
401 /* asm_fprintf() cannot handle %. */
403 asm_fprintf (stream, "\tadd.l %I%wd,%Rsp\n", - (fsize + 4));
405 asm_fprintf (stream, "\taddl %I%wd,%Rsp\n", - (fsize + 4));
408 if (dwarf2out_do_frame ())
410 cfa_store_offset += fsize + 4;
411 cfa_offset = cfa_store_offset;
412 dwarf2out_def_cfa ("", STACK_POINTER_REGNUM, cfa_offset);
417 for (regno = 16; regno < 24; regno++)
418 if (m68k_save_reg (regno))
420 mask |= 1 << (regno - 16);
423 if ((mask & 0xff) != 0)
426 asm_fprintf (stream, "\tfmovm %I0x%x,-(%Rsp)\n", mask & 0xff);
428 asm_fprintf (stream, "\tfmovem %I0x%x,%Rsp@-\n", mask & 0xff);
430 if (dwarf2out_do_frame ())
432 char *l = (char *) dwarf2out_cfi_label ();
435 cfa_store_offset += num_saved_regs * 12;
436 if (! frame_pointer_needed)
438 cfa_offset = cfa_store_offset;
439 dwarf2out_def_cfa (l, STACK_POINTER_REGNUM, cfa_offset);
441 for (regno = 16, n_regs = 0; regno < 24; regno++)
442 if (mask & (1 << (regno - 16)))
443 dwarf2out_reg_save (l, regno,
444 -cfa_store_offset + n_regs++ * 12);
450 for (regno = 0; regno < 16; regno++)
451 if (m68k_save_reg (regno))
453 mask |= 1 << (15 - regno);
457 /* If the stack limit is not a symbol, check it here.
458 This has the disadvantage that it may be too late... */
459 if (current_function_limit_stack)
461 if (REG_P (stack_limit_rtx))
463 #if defined (MOTOROLA)
464 asm_fprintf (stream, "\tcmp.l %s,%Rsp\n\ttrapcs\n",
465 reg_names[REGNO (stack_limit_rtx)]);
467 asm_fprintf (stream, "\tcmpl %s,%Rsp\n\ttrapcs\n",
468 reg_names[REGNO (stack_limit_rtx)]);
471 else if (GET_CODE (stack_limit_rtx) != SYMBOL_REF)
472 warning ("stack limit expression is not supported");
475 if (num_saved_regs <= 2)
477 /* Store each separately in the same order moveml uses.
478 Using two movel instructions instead of a single moveml
479 is about 15% faster for the 68020 and 68030 at no expense
484 /* Undo the work from above. */
485 for (i = 0; i< 16; i++)
490 "\t%Omove.l %s,-(%Rsp)\n",
492 "\tmovel %s,%Rsp@-\n",
495 if (dwarf2out_do_frame ())
497 char *l = (char *) dwarf2out_cfi_label ();
499 cfa_store_offset += 4;
500 if (! frame_pointer_needed)
502 cfa_offset = cfa_store_offset;
503 dwarf2out_def_cfa (l, STACK_POINTER_REGNUM, cfa_offset);
505 dwarf2out_reg_save (l, 15 - i, -cfa_store_offset);
513 /* The coldfire does not support the predecrement form of the
514 movml instruction, so we must adjust the stack pointer and
515 then use the plain address register indirect mode. We also
516 have to invert the register save mask to use the new mode.
518 FIXME: if num_saved_regs was calculated earlier, we could
519 combine the stack pointer adjustment with any adjustment
520 done when the initial stack frame is created. This would
521 save an instruction */
526 for (i = 0; i < 16; i++)
528 newmask |= (1 << (15-i));
531 asm_fprintf (stream, "\tlea (%d,%Rsp),%Rsp\n", -num_saved_regs*4);
532 asm_fprintf (stream, "\tmovm.l %I0x%x,(%Rsp)\n", newmask);
534 asm_fprintf (stream, "\tlea %Rsp@(%d),%Rsp\n", -num_saved_regs*4);
535 asm_fprintf (stream, "\tmoveml %I0x%x,%Rsp@\n", newmask);
541 asm_fprintf (stream, "\tmovm.l %I0x%x,-(%Rsp)\n", mask);
543 asm_fprintf (stream, "\tmoveml %I0x%x,%Rsp@-\n", mask);
546 if (dwarf2out_do_frame ())
548 char *l = (char *) dwarf2out_cfi_label ();
551 cfa_store_offset += num_saved_regs * 4;
552 if (! frame_pointer_needed)
554 cfa_offset = cfa_store_offset;
555 dwarf2out_def_cfa (l, STACK_POINTER_REGNUM, cfa_offset);
557 for (regno = 0, n_regs = 0; regno < 16; regno++)
558 if (mask & (1 << (15 - regno)))
559 dwarf2out_reg_save (l, regno,
560 -cfa_store_offset + n_regs++ * 4);
563 if (flag_pic && current_function_uses_pic_offset_table)
566 asm_fprintf (stream, "\t%Olea (%Rpc, %U_GLOBAL_OFFSET_TABLE_@GOTPC), %s\n",
567 reg_names[PIC_OFFSET_TABLE_REGNUM]);
569 asm_fprintf (stream, "\tmovel %I%U_GLOBAL_OFFSET_TABLE_, %s\n",
570 reg_names[PIC_OFFSET_TABLE_REGNUM]);
571 asm_fprintf (stream, "\tlea %Rpc@(0,%s:l),%s\n",
572 reg_names[PIC_OFFSET_TABLE_REGNUM],
573 reg_names[PIC_OFFSET_TABLE_REGNUM]);
578 /* Return true if this function's epilogue can be output as RTL. */
585 if (!reload_completed || frame_pointer_needed || get_frame_size () != 0)
588 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
589 if (m68k_save_reg (regno))
595 /* This function generates the assembly code for function exit,
596 on machines that need it.
598 The function epilogue should not depend on the current stack pointer!
599 It should use the frame pointer only, if there is a frame pointer.
600 This is mandatory because of alloca; we also take advantage of it to
601 omit stack adjustments before returning. */
604 m68k_output_function_epilogue (FILE *stream, HOST_WIDE_INT size)
607 register int mask, fmask;
609 HOST_WIDE_INT offset, foffset;
610 HOST_WIDE_INT fsize = (size + 3) & -4;
612 rtx insn = get_last_insn ();
613 int restore_from_sp = 0;
615 /* If the last insn was a BARRIER, we don't have to write any code. */
616 if (GET_CODE (insn) == NOTE)
617 insn = prev_nonnote_insn (insn);
618 if (insn && GET_CODE (insn) == BARRIER)
620 /* Output just a no-op so that debuggers don't get confused
621 about which function the pc is in at this address. */
622 fprintf (stream, "\tnop\n");
626 #ifdef FUNCTION_EXTRA_EPILOGUE
627 FUNCTION_EXTRA_EPILOGUE (stream, size);
629 nregs = 0; fmask = 0;
632 for (regno = 16; regno < 24; regno++)
633 if (m68k_save_reg (regno))
636 fmask |= 1 << (23 - regno);
639 foffset = nregs * 12;
641 for (regno = 0; regno < 16; regno++)
642 if (m68k_save_reg (regno))
647 offset = foffset + nregs * 4;
648 /* FIXME : leaf_function_p below is too strong.
649 What we really need to know there is if there could be pending
650 stack adjustment needed at that point. */
651 restore_from_sp = ! frame_pointer_needed
652 || (! current_function_calls_alloca && leaf_function_p ());
653 if (offset + fsize >= 0x8000
658 asm_fprintf (stream, "\t%Omove.l %I%wd,%Ra1\n", -fsize);
660 asm_fprintf (stream, "\tmovel %I%wd,%Ra1\n", -fsize);
664 if (TARGET_COLDFIRE || nregs <= 2)
666 /* Restore each separately in the same order moveml does.
667 Using two movel instructions instead of a single moveml
668 is about 15% faster for the 68020 and 68030 at no expense
673 /* Undo the work from above. */
674 for (i = 0; i< 16; i++)
680 asm_fprintf (stream, "\t%Omove.l -%wd(%s,%Ra1.l),%s\n",
682 reg_names[FRAME_POINTER_REGNUM],
685 asm_fprintf (stream, "\tmovel %s@(-%wd,%Ra1:l),%s\n",
686 reg_names[FRAME_POINTER_REGNUM],
687 offset + fsize, reg_names[i]);
690 else if (restore_from_sp)
693 asm_fprintf (stream, "\t%Omove.l (%Rsp)+,%s\n",
696 asm_fprintf (stream, "\tmovel %Rsp@+,%s\n",
703 asm_fprintf (stream, "\t%Omove.l -%wd(%s),%s\n",
705 reg_names[FRAME_POINTER_REGNUM],
708 asm_fprintf (stream, "\tmovel %s@(-%wd),%s\n",
709 reg_names[FRAME_POINTER_REGNUM],
710 offset + fsize, reg_names[i]);
721 asm_fprintf (stream, "\tmovm.l -%wd(%s,%Ra1.l),%I0x%x\n",
723 reg_names[FRAME_POINTER_REGNUM],
726 asm_fprintf (stream, "\tmoveml %s@(-%wd,%Ra1:l),%I0x%x\n",
727 reg_names[FRAME_POINTER_REGNUM],
728 offset + fsize, mask);
731 else if (restore_from_sp)
734 asm_fprintf (stream, "\tmovm.l (%Rsp)+,%I0x%x\n", mask);
736 asm_fprintf (stream, "\tmoveml %Rsp@+,%I0x%x\n", mask);
742 asm_fprintf (stream, "\tmovm.l -%wd(%s),%I0x%x\n",
744 reg_names[FRAME_POINTER_REGNUM],
747 asm_fprintf (stream, "\tmoveml %s@(-%wd),%I0x%x\n",
748 reg_names[FRAME_POINTER_REGNUM],
749 offset + fsize, mask);
758 asm_fprintf (stream, "\tfmovm -%wd(%s,%Ra1.l),%I0x%x\n",
760 reg_names[FRAME_POINTER_REGNUM],
763 asm_fprintf (stream, "\tfmovem %s@(-%wd,%Ra1:l),%I0x%x\n",
764 reg_names[FRAME_POINTER_REGNUM],
765 foffset + fsize, fmask);
768 else if (restore_from_sp)
771 asm_fprintf (stream, "\tfmovm (%Rsp)+,%I0x%x\n", fmask);
773 asm_fprintf (stream, "\tfmovem %Rsp@+,%I0x%x\n", fmask);
779 asm_fprintf (stream, "\tfmovm -%wd(%s),%I0x%x\n",
781 reg_names[FRAME_POINTER_REGNUM],
784 asm_fprintf (stream, "\tfmovem %s@(-%wd),%I0x%x\n",
785 reg_names[FRAME_POINTER_REGNUM],
786 foffset + fsize, fmask);
790 if (frame_pointer_needed)
791 fprintf (stream, "\tunlk %s\n",
792 reg_names[FRAME_POINTER_REGNUM]);
797 if (!TARGET_COLDFIRE)
800 asm_fprintf (stream, "\taddq.w %I%wd,%Rsp\n", fsize + 4);
802 asm_fprintf (stream, "\taddqw %I%wd,%Rsp\n", fsize + 4);
808 asm_fprintf (stream, "\taddq.l %I%wd,%Rsp\n", fsize + 4);
810 asm_fprintf (stream, "\taddql %I%wd,%Rsp\n", fsize + 4);
814 else if (fsize + 4 <= 16 && TARGET_CPU32)
816 /* On the CPU32 it is faster to use two addqw instructions to
817 add a small integer (8 < N <= 16) to a register. */
818 /* asm_fprintf() cannot handle %. */
820 asm_fprintf (stream, "\taddq.w %I8,%Rsp\n\taddq.w %I%wd,%Rsp\n",
823 asm_fprintf (stream, "\taddqw %I8,%Rsp\n\taddqw %I%wd,%Rsp\n",
827 else if (fsize + 4 < 0x8000)
831 /* asm_fprintf() cannot handle %. */
833 asm_fprintf (stream, "\tadd.w %I%wd,%Rsp\n", fsize + 4);
835 asm_fprintf (stream, "\taddw %I%wd,%Rsp\n", fsize + 4);
841 asm_fprintf (stream, "\tlea (%wd,%Rsp),%Rsp\n", fsize + 4);
843 asm_fprintf (stream, "\tlea %Rsp@(%wd),%Rsp\n", fsize + 4);
849 /* asm_fprintf() cannot handle %. */
851 asm_fprintf (stream, "\tadd.l %I%wd,%Rsp\n", fsize + 4);
853 asm_fprintf (stream, "\taddl %I%wd,%Rsp\n", fsize + 4);
857 if (current_function_calls_eh_return)
860 asm_fprintf (stream, "\tadd.l %Ra0,%Rsp\n");
862 asm_fprintf (stream, "\taddl %Ra0,%Rsp\n");
865 if (current_function_pops_args)
866 asm_fprintf (stream, "\trtd %I%d\n", current_function_pops_args);
868 fprintf (stream, "\trts\n");
871 /* Similar to general_operand, but exclude stack_pointer_rtx. */
874 not_sp_operand (rtx op, enum machine_mode mode)
876 return op != stack_pointer_rtx && nonimmediate_operand (op, mode);
879 /* Return true if X is a valid comparison operator for the dbcc
882 Note it rejects floating point comparison operators.
883 (In the future we could use Fdbcc).
885 It also rejects some comparisons when CC_NO_OVERFLOW is set. */
888 valid_dbcc_comparison_p (rtx x, enum machine_mode mode ATTRIBUTE_UNUSED)
890 switch (GET_CODE (x))
892 case EQ: case NE: case GTU: case LTU:
896 /* Reject some when CC_NO_OVERFLOW is set. This may be over
898 case GT: case LT: case GE: case LE:
899 return ! (cc_prev_status.flags & CC_NO_OVERFLOW);
905 /* Return nonzero if flags are currently in the 68881 flag register. */
907 flags_in_68881 (void)
909 /* We could add support for these in the future */
910 return cc_status.flags & CC_IN_68881;
913 /* Output a dbCC; jCC sequence. Note we do not handle the
914 floating point version of this sequence (Fdbcc). We also
915 do not handle alternative conditions when CC_NO_OVERFLOW is
916 set. It is assumed that valid_dbcc_comparison_p and flags_in_68881 will
917 kick those out before we get here. */
920 output_dbcc_and_branch (rtx *operands)
922 switch (GET_CODE (operands[3]))
926 output_asm_insn ("dbeq %0,%l1\n\tjbeq %l2", operands);
928 output_asm_insn ("dbeq %0,%l1\n\tjeq %l2", operands);
934 output_asm_insn ("dbne %0,%l1\n\tjbne %l2", operands);
936 output_asm_insn ("dbne %0,%l1\n\tjne %l2", operands);
942 output_asm_insn ("dbgt %0,%l1\n\tjbgt %l2", operands);
944 output_asm_insn ("dbgt %0,%l1\n\tjgt %l2", operands);
950 output_asm_insn ("dbhi %0,%l1\n\tjbhi %l2", operands);
952 output_asm_insn ("dbhi %0,%l1\n\tjhi %l2", operands);
958 output_asm_insn ("dblt %0,%l1\n\tjblt %l2", operands);
960 output_asm_insn ("dblt %0,%l1\n\tjlt %l2", operands);
966 output_asm_insn ("dbcs %0,%l1\n\tjbcs %l2", operands);
968 output_asm_insn ("dbcs %0,%l1\n\tjcs %l2", operands);
974 output_asm_insn ("dbge %0,%l1\n\tjbge %l2", operands);
976 output_asm_insn ("dbge %0,%l1\n\tjge %l2", operands);
982 output_asm_insn ("dbcc %0,%l1\n\tjbcc %l2", operands);
984 output_asm_insn ("dbcc %0,%l1\n\tjcc %l2", operands);
990 output_asm_insn ("dble %0,%l1\n\tjble %l2", operands);
992 output_asm_insn ("dble %0,%l1\n\tjle %l2", operands);
998 output_asm_insn ("dbls %0,%l1\n\tjbls %l2", operands);
1000 output_asm_insn ("dbls %0,%l1\n\tjls %l2", operands);
1008 /* If the decrement is to be done in SImode, then we have
1009 to compensate for the fact that dbcc decrements in HImode. */
1010 switch (GET_MODE (operands[0]))
1014 output_asm_insn ("clr%.w %0\n\tsubq%.l %#1,%0\n\tjbpl %l1", operands);
1016 output_asm_insn ("clr%.w %0\n\tsubq%.l %#1,%0\n\tjpl %l1", operands);
1029 output_scc_di(rtx op, rtx operand1, rtx operand2, rtx dest)
1032 enum rtx_code op_code = GET_CODE (op);
1034 /* This does not produce a useful cc. */
1037 /* The m68k cmp.l instruction requires operand1 to be a reg as used
1038 below. Swap the operands and change the op if these requirements
1039 are not fulfilled. */
1040 if (GET_CODE (operand2) == REG && GET_CODE (operand1) != REG)
1044 operand1 = operand2;
1046 op_code = swap_condition (op_code);
1048 loperands[0] = operand1;
1049 if (GET_CODE (operand1) == REG)
1050 loperands[1] = gen_rtx_REG (SImode, REGNO (operand1) + 1);
1052 loperands[1] = adjust_address (operand1, SImode, 4);
1053 if (operand2 != const0_rtx)
1055 loperands[2] = operand2;
1056 if (GET_CODE (operand2) == REG)
1057 loperands[3] = gen_rtx_REG (SImode, REGNO (operand2) + 1);
1059 loperands[3] = adjust_address (operand2, SImode, 4);
1061 loperands[4] = gen_label_rtx();
1062 if (operand2 != const0_rtx)
1065 #ifdef SGS_CMP_ORDER
1066 output_asm_insn ("cmp%.l %0,%2\n\tjbne %l4\n\tcmp%.l %1,%3", loperands);
1068 output_asm_insn ("cmp%.l %2,%0\n\tjbne %l4\n\tcmp%.l %3,%1", loperands);
1071 #ifdef SGS_CMP_ORDER
1072 output_asm_insn ("cmp%.l %0,%2\n\tjne %l4\n\tcmp%.l %1,%3", loperands);
1074 output_asm_insn ("cmp%.l %2,%0\n\tjne %l4\n\tcmp%.l %3,%1", loperands);
1080 if (TARGET_68020 || TARGET_COLDFIRE || ! ADDRESS_REG_P (loperands[0]))
1081 output_asm_insn ("tst%.l %0", loperands);
1084 #ifdef SGS_CMP_ORDER
1085 output_asm_insn ("cmp%.w %0,%#0", loperands);
1087 output_asm_insn ("cmp%.w %#0,%0", loperands);
1092 output_asm_insn ("jbne %l4", loperands);
1094 output_asm_insn ("jne %l4", loperands);
1097 if (TARGET_68020 || TARGET_COLDFIRE || ! ADDRESS_REG_P (loperands[1]))
1098 output_asm_insn ("tst%.l %1", loperands);
1101 #ifdef SGS_CMP_ORDER
1102 output_asm_insn ("cmp%.w %1,%#0", loperands);
1104 output_asm_insn ("cmp%.w %#0,%1", loperands);
1109 loperands[5] = dest;
1114 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1115 CODE_LABEL_NUMBER (loperands[4]));
1116 output_asm_insn ("seq %5", loperands);
1120 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1121 CODE_LABEL_NUMBER (loperands[4]));
1122 output_asm_insn ("sne %5", loperands);
1126 loperands[6] = gen_label_rtx();
1128 output_asm_insn ("shi %5\n\tjbra %l6", loperands);
1130 output_asm_insn ("shi %5\n\tjra %l6", loperands);
1132 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1133 CODE_LABEL_NUMBER (loperands[4]));
1134 output_asm_insn ("sgt %5", loperands);
1135 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1136 CODE_LABEL_NUMBER (loperands[6]));
1140 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1141 CODE_LABEL_NUMBER (loperands[4]));
1142 output_asm_insn ("shi %5", loperands);
1146 loperands[6] = gen_label_rtx();
1148 output_asm_insn ("scs %5\n\tjbra %l6", loperands);
1150 output_asm_insn ("scs %5\n\tjra %l6", loperands);
1152 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1153 CODE_LABEL_NUMBER (loperands[4]));
1154 output_asm_insn ("slt %5", loperands);
1155 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1156 CODE_LABEL_NUMBER (loperands[6]));
1160 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1161 CODE_LABEL_NUMBER (loperands[4]));
1162 output_asm_insn ("scs %5", loperands);
1166 loperands[6] = gen_label_rtx();
1168 output_asm_insn ("scc %5\n\tjbra %l6", loperands);
1170 output_asm_insn ("scc %5\n\tjra %l6", loperands);
1172 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1173 CODE_LABEL_NUMBER (loperands[4]));
1174 output_asm_insn ("sge %5", loperands);
1175 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1176 CODE_LABEL_NUMBER (loperands[6]));
1180 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1181 CODE_LABEL_NUMBER (loperands[4]));
1182 output_asm_insn ("scc %5", loperands);
1186 loperands[6] = gen_label_rtx();
1188 output_asm_insn ("sls %5\n\tjbra %l6", loperands);
1190 output_asm_insn ("sls %5\n\tjra %l6", loperands);
1192 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1193 CODE_LABEL_NUMBER (loperands[4]));
1194 output_asm_insn ("sle %5", loperands);
1195 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1196 CODE_LABEL_NUMBER (loperands[6]));
1200 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1201 CODE_LABEL_NUMBER (loperands[4]));
1202 output_asm_insn ("sls %5", loperands);
1212 output_btst (rtx *operands, rtx countop, rtx dataop, rtx insn, int signpos)
1214 operands[0] = countop;
1215 operands[1] = dataop;
1217 if (GET_CODE (countop) == CONST_INT)
1219 register int count = INTVAL (countop);
1220 /* If COUNT is bigger than size of storage unit in use,
1221 advance to the containing unit of same size. */
1222 if (count > signpos)
1224 int offset = (count & ~signpos) / 8;
1225 count = count & signpos;
1226 operands[1] = dataop = adjust_address (dataop, QImode, offset);
1228 if (count == signpos)
1229 cc_status.flags = CC_NOT_POSITIVE | CC_Z_IN_NOT_N;
1231 cc_status.flags = CC_NOT_NEGATIVE | CC_Z_IN_NOT_N;
1233 /* These three statements used to use next_insns_test_no...
1234 but it appears that this should do the same job. */
1236 && next_insn_tests_no_inequality (insn))
1239 && next_insn_tests_no_inequality (insn))
1242 && next_insn_tests_no_inequality (insn))
1245 cc_status.flags = CC_NOT_NEGATIVE;
1247 return "btst %0,%1";
1250 /* Returns true if OP is either a symbol reference or a sum of a symbol
1251 reference and a constant. */
1254 symbolic_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
1256 switch (GET_CODE (op))
1264 return ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
1265 || GET_CODE (XEXP (op, 0)) == LABEL_REF)
1266 && GET_CODE (XEXP (op, 1)) == CONST_INT);
1268 #if 0 /* Deleted, with corresponding change in m68k.h,
1269 so as to fit the specs. No CONST_DOUBLE is ever symbolic. */
1271 return GET_MODE (op) == mode;
1279 /* Check for sign_extend or zero_extend. Used for bit-count operands. */
1282 extend_operator(rtx x, enum machine_mode mode)
1284 if (mode != VOIDmode && GET_MODE(x) != mode)
1286 switch (GET_CODE(x))
1297 /* Legitimize PIC addresses. If the address is already
1298 position-independent, we return ORIG. Newly generated
1299 position-independent addresses go to REG. If we need more
1300 than one register, we lose.
1302 An address is legitimized by making an indirect reference
1303 through the Global Offset Table with the name of the symbol
1306 The assembler and linker are responsible for placing the
1307 address of the symbol in the GOT. The function prologue
1308 is responsible for initializing a5 to the starting address
1311 The assembler is also responsible for translating a symbol name
1312 into a constant displacement from the start of the GOT.
1314 A quick example may make things a little clearer:
1316 When not generating PIC code to store the value 12345 into _foo
1317 we would generate the following code:
1321 When generating PIC two transformations are made. First, the compiler
1322 loads the address of foo into a register. So the first transformation makes:
1327 The code in movsi will intercept the lea instruction and call this
1328 routine which will transform the instructions into:
1330 movel a5@(_foo:w), a0
1334 That (in a nutshell) is how *all* symbol and label references are
1338 legitimize_pic_address (rtx orig, enum machine_mode mode ATTRIBUTE_UNUSED,
1343 /* First handle a simple SYMBOL_REF or LABEL_REF */
1344 if (GET_CODE (orig) == SYMBOL_REF || GET_CODE (orig) == LABEL_REF)
1349 pic_ref = gen_rtx_MEM (Pmode,
1350 gen_rtx_PLUS (Pmode,
1351 pic_offset_table_rtx, orig));
1352 current_function_uses_pic_offset_table = 1;
1353 RTX_UNCHANGING_P (pic_ref) = 1;
1354 emit_move_insn (reg, pic_ref);
1357 else if (GET_CODE (orig) == CONST)
1361 /* Make sure this is CONST has not already been legitimized */
1362 if (GET_CODE (XEXP (orig, 0)) == PLUS
1363 && XEXP (XEXP (orig, 0), 0) == pic_offset_table_rtx)
1369 /* legitimize both operands of the PLUS */
1370 if (GET_CODE (XEXP (orig, 0)) == PLUS)
1372 base = legitimize_pic_address (XEXP (XEXP (orig, 0), 0), Pmode, reg);
1373 orig = legitimize_pic_address (XEXP (XEXP (orig, 0), 1), Pmode,
1374 base == reg ? 0 : reg);
1378 if (GET_CODE (orig) == CONST_INT)
1379 return plus_constant (base, INTVAL (orig));
1380 pic_ref = gen_rtx_PLUS (Pmode, base, orig);
1381 /* Likewise, should we set special REG_NOTEs here? */
1387 typedef enum { MOVL, SWAP, NEGW, NOTW, NOTB, MOVQ } CONST_METHOD;
1389 static CONST_METHOD const_method (rtx);
1391 #define USE_MOVQ(i) ((unsigned)((i) + 128) <= 255)
1394 const_method (rtx constant)
1399 i = INTVAL (constant);
1403 /* The Coldfire doesn't have byte or word operations. */
1404 /* FIXME: This may not be useful for the m68060 either */
1405 if (!TARGET_COLDFIRE)
1407 /* if -256 < N < 256 but N is not in range for a moveq
1408 N^ff will be, so use moveq #N^ff, dreg; not.b dreg. */
1409 if (USE_MOVQ (i ^ 0xff))
1411 /* Likewise, try with not.w */
1412 if (USE_MOVQ (i ^ 0xffff))
1414 /* This is the only value where neg.w is useful */
1417 /* Try also with swap */
1419 if (USE_MOVQ ((u >> 16) | (u << 16)))
1422 /* Otherwise, use move.l */
1427 const_int_cost (rtx constant)
1429 switch (const_method (constant))
1432 /* Constants between -128 and 127 are cheap due to moveq */
1438 /* Constants easily generated by moveq + not.b/not.w/neg.w/swap */
1448 m68k_rtx_costs (rtx x, int code, int outer_code, int *total)
1453 /* Constant zero is super cheap due to clr instruction. */
1454 if (x == const0_rtx)
1457 *total = const_int_cost (x);
1467 /* Make 0.0 cheaper than other floating constants to
1468 encourage creating tstsf and tstdf insns. */
1469 if (outer_code == COMPARE
1470 && (x == CONST0_RTX (SFmode) || x == CONST0_RTX (DFmode)))
1476 /* These are vaguely right for a 68020. */
1477 /* The costs for long multiply have been adjusted to work properly
1478 in synth_mult on the 68020, relative to an average of the time
1479 for add and the time for shift, taking away a little more because
1480 sometimes move insns are needed. */
1481 /* div?.w is relatively cheaper on 68000 counted in COSTS_N_INSNS terms. */
1482 #define MULL_COST (TARGET_68060 ? 2 : TARGET_68040 ? 5 : TARGET_CFV3 ? 3 : TARGET_COLDFIRE ? 10 : 13)
1483 #define MULW_COST (TARGET_68060 ? 2 : TARGET_68040 ? 3 : TARGET_68020 ? 8 : \
1484 TARGET_CFV3 ? 2 : 5)
1485 #define DIVW_COST (TARGET_68020 ? 27 : TARGET_CF_HWDIV ? 11 : 12)
1488 /* An lea costs about three times as much as a simple add. */
1489 if (GET_MODE (x) == SImode
1490 && GET_CODE (XEXP (x, 1)) == REG
1491 && GET_CODE (XEXP (x, 0)) == MULT
1492 && GET_CODE (XEXP (XEXP (x, 0), 0)) == REG
1493 && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT
1494 && (INTVAL (XEXP (XEXP (x, 0), 1)) == 2
1495 || INTVAL (XEXP (XEXP (x, 0), 1)) == 4
1496 || INTVAL (XEXP (XEXP (x, 0), 1)) == 8))
1498 /* lea an@(dx:l:i),am */
1499 *total = COSTS_N_INSNS (TARGET_COLDFIRE ? 2 : 3);
1509 *total = COSTS_N_INSNS(1);
1512 if (! TARGET_68020 && ! TARGET_COLDFIRE)
1514 if (GET_CODE (XEXP (x, 1)) == CONST_INT)
1516 if (INTVAL (XEXP (x, 1)) < 16)
1517 *total = COSTS_N_INSNS (2) + INTVAL (XEXP (x, 1)) / 2;
1519 /* We're using clrw + swap for these cases. */
1520 *total = COSTS_N_INSNS (4) + (INTVAL (XEXP (x, 1)) - 16) / 2;
1523 *total = COSTS_N_INSNS (10); /* worst case */
1526 /* A shift by a big integer takes an extra instruction. */
1527 if (GET_CODE (XEXP (x, 1)) == CONST_INT
1528 && (INTVAL (XEXP (x, 1)) == 16))
1530 *total = COSTS_N_INSNS (2); /* clrw;swap */
1533 if (GET_CODE (XEXP (x, 1)) == CONST_INT
1534 && !(INTVAL (XEXP (x, 1)) > 0
1535 && INTVAL (XEXP (x, 1)) <= 8))
1537 *total = COSTS_N_INSNS (TARGET_COLDFIRE ? 1 : 3); /* lsr #i,dn */
1543 if ((GET_CODE (XEXP (x, 0)) == ZERO_EXTEND
1544 || GET_CODE (XEXP (x, 0)) == SIGN_EXTEND)
1545 && GET_MODE (x) == SImode)
1546 *total = COSTS_N_INSNS (MULW_COST);
1547 else if (GET_MODE (x) == QImode || GET_MODE (x) == HImode)
1548 *total = COSTS_N_INSNS (MULW_COST);
1550 *total = COSTS_N_INSNS (MULL_COST);
1557 if (GET_MODE (x) == QImode || GET_MODE (x) == HImode)
1558 *total = COSTS_N_INSNS (DIVW_COST); /* div.w */
1559 else if (TARGET_CF_HWDIV)
1560 *total = COSTS_N_INSNS (18);
1562 *total = COSTS_N_INSNS (43); /* div.l */
1571 output_move_const_into_data_reg (rtx *operands)
1575 i = INTVAL (operands[1]);
1576 switch (const_method (operands[1]))
1579 return "moveq %1,%0";
1581 operands[1] = GEN_INT (i ^ 0xff);
1582 return "moveq %1,%0\n\tnot%.b %0";
1584 operands[1] = GEN_INT (i ^ 0xffff);
1585 return "moveq %1,%0\n\tnot%.w %0";
1587 return "moveq %#-128,%0\n\tneg%.w %0";
1592 operands[1] = GEN_INT ((u << 16) | (u >> 16));
1593 return "moveq %1,%0\n\tswap %0";
1596 return "move%.l %1,%0";
1603 output_move_simode_const (rtx *operands)
1605 if (operands[1] == const0_rtx
1606 && (DATA_REG_P (operands[0])
1607 || GET_CODE (operands[0]) == MEM)
1608 /* clr insns on 68000 read before writing.
1609 This isn't so on the 68010, but we have no TARGET_68010. */
1610 && ((TARGET_68020 || TARGET_COLDFIRE)
1611 || !(GET_CODE (operands[0]) == MEM
1612 && MEM_VOLATILE_P (operands[0]))))
1614 else if (operands[1] == const0_rtx
1615 && ADDRESS_REG_P (operands[0]))
1616 return "sub%.l %0,%0";
1617 else if (DATA_REG_P (operands[0]))
1618 return output_move_const_into_data_reg (operands);
1619 else if (ADDRESS_REG_P (operands[0])
1620 && INTVAL (operands[1]) < 0x8000
1621 && INTVAL (operands[1]) >= -0x8000)
1622 return "move%.w %1,%0";
1623 else if (GET_CODE (operands[0]) == MEM
1624 && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
1625 && REGNO (XEXP (XEXP (operands[0], 0), 0)) == STACK_POINTER_REGNUM
1626 && INTVAL (operands[1]) < 0x8000
1627 && INTVAL (operands[1]) >= -0x8000)
1629 return "move%.l %1,%0";
1633 output_move_simode (rtx *operands)
1635 if (GET_CODE (operands[1]) == CONST_INT)
1636 return output_move_simode_const (operands);
1637 else if ((GET_CODE (operands[1]) == SYMBOL_REF
1638 || GET_CODE (operands[1]) == CONST)
1639 && push_operand (operands[0], SImode))
1641 else if ((GET_CODE (operands[1]) == SYMBOL_REF
1642 || GET_CODE (operands[1]) == CONST)
1643 && ADDRESS_REG_P (operands[0]))
1644 return "lea %a1,%0";
1645 return "move%.l %1,%0";
1649 output_move_himode (rtx *operands)
1651 if (GET_CODE (operands[1]) == CONST_INT)
1653 if (operands[1] == const0_rtx
1654 && (DATA_REG_P (operands[0])
1655 || GET_CODE (operands[0]) == MEM)
1656 /* clr insns on 68000 read before writing.
1657 This isn't so on the 68010, but we have no TARGET_68010. */
1658 && ((TARGET_68020 || TARGET_COLDFIRE)
1659 || !(GET_CODE (operands[0]) == MEM
1660 && MEM_VOLATILE_P (operands[0]))))
1662 else if (operands[1] == const0_rtx
1663 && ADDRESS_REG_P (operands[0]))
1664 return "sub%.l %0,%0";
1665 else if (DATA_REG_P (operands[0])
1666 && INTVAL (operands[1]) < 128
1667 && INTVAL (operands[1]) >= -128)
1669 return "moveq %1,%0";
1671 else if (INTVAL (operands[1]) < 0x8000
1672 && INTVAL (operands[1]) >= -0x8000)
1673 return "move%.w %1,%0";
1675 else if (CONSTANT_P (operands[1]))
1676 return "move%.l %1,%0";
1677 /* Recognize the insn before a tablejump, one that refers
1678 to a table of offsets. Such an insn will need to refer
1679 to a label on the insn. So output one. Use the label-number
1680 of the table of offsets to generate this label. This code,
1681 and similar code below, assumes that there will be at most one
1682 reference to each table. */
1683 if (GET_CODE (operands[1]) == MEM
1684 && GET_CODE (XEXP (operands[1], 0)) == PLUS
1685 && GET_CODE (XEXP (XEXP (operands[1], 0), 1)) == LABEL_REF
1686 && GET_CODE (XEXP (XEXP (operands[1], 0), 0)) != PLUS)
1688 rtx labelref = XEXP (XEXP (operands[1], 0), 1);
1689 #if defined (MOTOROLA) && !defined (SGS_SWITCH_TABLES)
1691 asm_fprintf (asm_out_file, "\tset %LLI%d,.+2\n",
1692 CODE_LABEL_NUMBER (XEXP (labelref, 0)));
1694 asm_fprintf (asm_out_file, "\t.set %LLI%d,.+2\n",
1695 CODE_LABEL_NUMBER (XEXP (labelref, 0)));
1696 #endif /* not SGS */
1697 #else /* SGS_SWITCH_TABLES or not MOTOROLA */
1698 (*targetm.asm_out.internal_label) (asm_out_file, "LI",
1699 CODE_LABEL_NUMBER (XEXP (labelref, 0)));
1700 #ifdef SGS_SWITCH_TABLES
1701 /* Set flag saying we need to define the symbol
1702 LD%n (with value L%n-LI%n) at the end of the switch table. */
1703 switch_table_difference_label_flag = 1;
1704 #endif /* SGS_SWITCH_TABLES */
1705 #endif /* SGS_SWITCH_TABLES or not MOTOROLA */
1707 return "move%.w %1,%0";
1711 output_move_qimode (rtx *operands)
1715 /* This is probably useless, since it loses for pushing a struct
1716 of several bytes a byte at a time. */
1717 /* 68k family always modifies the stack pointer by at least 2, even for
1718 byte pushes. The 5200 (coldfire) does not do this. */
1719 if (GET_CODE (operands[0]) == MEM
1720 && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
1721 && XEXP (XEXP (operands[0], 0), 0) == stack_pointer_rtx
1722 && ! ADDRESS_REG_P (operands[1])
1723 && ! TARGET_COLDFIRE)
1725 xoperands[1] = operands[1];
1727 = gen_rtx_MEM (QImode,
1728 gen_rtx_PLUS (VOIDmode, stack_pointer_rtx, const1_rtx));
1729 /* Just pushing a byte puts it in the high byte of the halfword. */
1730 /* We must put it in the low-order, high-numbered byte. */
1731 if (!reg_mentioned_p (stack_pointer_rtx, operands[1]))
1733 xoperands[3] = stack_pointer_rtx;
1734 output_asm_insn ("subq%.l %#2,%3\n\tmove%.b %1,%2", xoperands);
1737 output_asm_insn ("move%.b %1,%-\n\tmove%.b %@,%2", xoperands);
1741 /* clr and st insns on 68000 read before writing.
1742 This isn't so on the 68010, but we have no TARGET_68010. */
1743 if (!ADDRESS_REG_P (operands[0])
1744 && ((TARGET_68020 || TARGET_COLDFIRE)
1745 || !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0]))))
1747 if (operands[1] == const0_rtx)
1749 if ((!TARGET_COLDFIRE || DATA_REG_P (operands[0]))
1750 && GET_CODE (operands[1]) == CONST_INT
1751 && (INTVAL (operands[1]) & 255) == 255)
1757 if (GET_CODE (operands[1]) == CONST_INT
1758 && DATA_REG_P (operands[0])
1759 && INTVAL (operands[1]) < 128
1760 && INTVAL (operands[1]) >= -128)
1762 return "moveq %1,%0";
1764 if (operands[1] == const0_rtx && ADDRESS_REG_P (operands[0]))
1765 return "sub%.l %0,%0";
1766 if (GET_CODE (operands[1]) != CONST_INT && CONSTANT_P (operands[1]))
1767 return "move%.l %1,%0";
1768 /* 68k family (including the 5200 coldfire) does not support byte moves to
1769 from address registers. */
1770 if (ADDRESS_REG_P (operands[0]) || ADDRESS_REG_P (operands[1]))
1771 return "move%.w %1,%0";
1772 return "move%.b %1,%0";
1776 output_move_stricthi (rtx *operands)
1778 if (operands[1] == const0_rtx
1779 /* clr insns on 68000 read before writing.
1780 This isn't so on the 68010, but we have no TARGET_68010. */
1781 && ((TARGET_68020 || TARGET_COLDFIRE)
1782 || !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0]))))
1784 return "move%.w %1,%0";
1788 output_move_strictqi (rtx *operands)
1790 if (operands[1] == const0_rtx
1791 /* clr insns on 68000 read before writing.
1792 This isn't so on the 68010, but we have no TARGET_68010. */
1793 && ((TARGET_68020 || TARGET_COLDFIRE)
1794 || !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0]))))
1796 return "move%.b %1,%0";
1799 /* Return the best assembler insn template
1800 for moving operands[1] into operands[0] as a fullword. */
1803 singlemove_string (rtx *operands)
1805 if (GET_CODE (operands[1]) == CONST_INT)
1806 return output_move_simode_const (operands);
1807 return "move%.l %1,%0";
1811 /* Output assembler code to perform a doubleword move insn
1812 with operands OPERANDS. */
1815 output_move_double (rtx *operands)
1819 REGOP, OFFSOP, MEMOP, PUSHOP, POPOP, CNSTOP, RNDOP
1824 rtx addreg0 = 0, addreg1 = 0;
1825 int dest_overlapped_low = 0;
1826 int size = GET_MODE_SIZE (GET_MODE (operands[0]));
1831 /* First classify both operands. */
1833 if (REG_P (operands[0]))
1835 else if (offsettable_memref_p (operands[0]))
1837 else if (GET_CODE (XEXP (operands[0], 0)) == POST_INC)
1839 else if (GET_CODE (XEXP (operands[0], 0)) == PRE_DEC)
1841 else if (GET_CODE (operands[0]) == MEM)
1846 if (REG_P (operands[1]))
1848 else if (CONSTANT_P (operands[1]))
1850 else if (offsettable_memref_p (operands[1]))
1852 else if (GET_CODE (XEXP (operands[1], 0)) == POST_INC)
1854 else if (GET_CODE (XEXP (operands[1], 0)) == PRE_DEC)
1856 else if (GET_CODE (operands[1]) == MEM)
1861 /* Check for the cases that the operand constraints are not
1862 supposed to allow to happen. Abort if we get one,
1863 because generating code for these cases is painful. */
1865 if (optype0 == RNDOP || optype1 == RNDOP)
1868 /* If one operand is decrementing and one is incrementing
1869 decrement the former register explicitly
1870 and change that operand into ordinary indexing. */
1872 if (optype0 == PUSHOP && optype1 == POPOP)
1874 operands[0] = XEXP (XEXP (operands[0], 0), 0);
1876 output_asm_insn ("sub%.l %#12,%0", operands);
1878 output_asm_insn ("subq%.l %#8,%0", operands);
1879 if (GET_MODE (operands[1]) == XFmode)
1880 operands[0] = gen_rtx_MEM (XFmode, operands[0]);
1881 else if (GET_MODE (operands[0]) == DFmode)
1882 operands[0] = gen_rtx_MEM (DFmode, operands[0]);
1884 operands[0] = gen_rtx_MEM (DImode, operands[0]);
1887 if (optype0 == POPOP && optype1 == PUSHOP)
1889 operands[1] = XEXP (XEXP (operands[1], 0), 0);
1891 output_asm_insn ("sub%.l %#12,%1", operands);
1893 output_asm_insn ("subq%.l %#8,%1", operands);
1894 if (GET_MODE (operands[1]) == XFmode)
1895 operands[1] = gen_rtx_MEM (XFmode, operands[1]);
1896 else if (GET_MODE (operands[1]) == DFmode)
1897 operands[1] = gen_rtx_MEM (DFmode, operands[1]);
1899 operands[1] = gen_rtx_MEM (DImode, operands[1]);
1903 /* If an operand is an unoffsettable memory ref, find a register
1904 we can increment temporarily to make it refer to the second word. */
1906 if (optype0 == MEMOP)
1907 addreg0 = find_addr_reg (XEXP (operands[0], 0));
1909 if (optype1 == MEMOP)
1910 addreg1 = find_addr_reg (XEXP (operands[1], 0));
1912 /* Ok, we can do one word at a time.
1913 Normally we do the low-numbered word first,
1914 but if either operand is autodecrementing then we
1915 do the high-numbered word first.
1917 In either case, set up in LATEHALF the operands to use
1918 for the high-numbered word and in some cases alter the
1919 operands in OPERANDS to be suitable for the low-numbered word. */
1923 if (optype0 == REGOP)
1925 latehalf[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 2);
1926 middlehalf[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
1928 else if (optype0 == OFFSOP)
1930 middlehalf[0] = adjust_address (operands[0], SImode, 4);
1931 latehalf[0] = adjust_address (operands[0], SImode, size - 4);
1935 middlehalf[0] = operands[0];
1936 latehalf[0] = operands[0];
1939 if (optype1 == REGOP)
1941 latehalf[1] = gen_rtx_REG (SImode, REGNO (operands[1]) + 2);
1942 middlehalf[1] = gen_rtx_REG (SImode, REGNO (operands[1]) + 1);
1944 else if (optype1 == OFFSOP)
1946 middlehalf[1] = adjust_address (operands[1], SImode, 4);
1947 latehalf[1] = adjust_address (operands[1], SImode, size - 4);
1949 else if (optype1 == CNSTOP)
1951 if (GET_CODE (operands[1]) == CONST_DOUBLE)
1956 REAL_VALUE_FROM_CONST_DOUBLE (r, operands[1]);
1957 REAL_VALUE_TO_TARGET_LONG_DOUBLE (r, l);
1958 operands[1] = GEN_INT (l[0]);
1959 middlehalf[1] = GEN_INT (l[1]);
1960 latehalf[1] = GEN_INT (l[2]);
1962 else if (CONSTANT_P (operands[1]))
1964 /* actually, no non-CONST_DOUBLE constant should ever
1967 if (GET_CODE (operands[1]) == CONST_INT && INTVAL (operands[1]) < 0)
1968 latehalf[1] = constm1_rtx;
1970 latehalf[1] = const0_rtx;
1975 middlehalf[1] = operands[1];
1976 latehalf[1] = operands[1];
1980 /* size is not 12: */
1982 if (optype0 == REGOP)
1983 latehalf[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
1984 else if (optype0 == OFFSOP)
1985 latehalf[0] = adjust_address (operands[0], SImode, size - 4);
1987 latehalf[0] = operands[0];
1989 if (optype1 == REGOP)
1990 latehalf[1] = gen_rtx_REG (SImode, REGNO (operands[1]) + 1);
1991 else if (optype1 == OFFSOP)
1992 latehalf[1] = adjust_address (operands[1], SImode, size - 4);
1993 else if (optype1 == CNSTOP)
1994 split_double (operands[1], &operands[1], &latehalf[1]);
1996 latehalf[1] = operands[1];
1999 /* If insn is effectively movd N(sp),-(sp) then we will do the
2000 high word first. We should use the adjusted operand 1 (which is N+4(sp))
2001 for the low word as well, to compensate for the first decrement of sp. */
2002 if (optype0 == PUSHOP
2003 && REGNO (XEXP (XEXP (operands[0], 0), 0)) == STACK_POINTER_REGNUM
2004 && reg_overlap_mentioned_p (stack_pointer_rtx, operands[1]))
2005 operands[1] = middlehalf[1] = latehalf[1];
2007 /* For (set (reg:DI N) (mem:DI ... (reg:SI N) ...)),
2008 if the upper part of reg N does not appear in the MEM, arrange to
2009 emit the move late-half first. Otherwise, compute the MEM address
2010 into the upper part of N and use that as a pointer to the memory
2012 if (optype0 == REGOP
2013 && (optype1 == OFFSOP || optype1 == MEMOP))
2015 rtx testlow = gen_rtx_REG (SImode, REGNO (operands[0]));
2017 if (reg_overlap_mentioned_p (testlow, XEXP (operands[1], 0))
2018 && reg_overlap_mentioned_p (latehalf[0], XEXP (operands[1], 0)))
2020 /* If both halves of dest are used in the src memory address,
2021 compute the address into latehalf of dest.
2022 Note that this can't happen if the dest is two data regs. */
2024 xops[0] = latehalf[0];
2025 xops[1] = XEXP (operands[1], 0);
2026 output_asm_insn ("lea %a1,%0", xops);
2027 if (GET_MODE (operands[1]) == XFmode )
2029 operands[1] = gen_rtx_MEM (XFmode, latehalf[0]);
2030 middlehalf[1] = adjust_address (operands[1], DImode, size - 8);
2031 latehalf[1] = adjust_address (operands[1], DImode, size - 4);
2035 operands[1] = gen_rtx_MEM (DImode, latehalf[0]);
2036 latehalf[1] = adjust_address (operands[1], DImode, size - 4);
2040 && reg_overlap_mentioned_p (middlehalf[0],
2041 XEXP (operands[1], 0)))
2043 /* Check for two regs used by both source and dest.
2044 Note that this can't happen if the dest is all data regs.
2045 It can happen if the dest is d6, d7, a0.
2046 But in that case, latehalf is an addr reg, so
2047 the code at compadr does ok. */
2049 if (reg_overlap_mentioned_p (testlow, XEXP (operands[1], 0))
2050 || reg_overlap_mentioned_p (latehalf[0], XEXP (operands[1], 0)))
2053 /* JRV says this can't happen: */
2054 if (addreg0 || addreg1)
2057 /* Only the middle reg conflicts; simply put it last. */
2058 output_asm_insn (singlemove_string (operands), operands);
2059 output_asm_insn (singlemove_string (latehalf), latehalf);
2060 output_asm_insn (singlemove_string (middlehalf), middlehalf);
2063 else if (reg_overlap_mentioned_p (testlow, XEXP (operands[1], 0)))
2064 /* If the low half of dest is mentioned in the source memory
2065 address, the arrange to emit the move late half first. */
2066 dest_overlapped_low = 1;
2069 /* If one or both operands autodecrementing,
2070 do the two words, high-numbered first. */
2072 /* Likewise, the first move would clobber the source of the second one,
2073 do them in the other order. This happens only for registers;
2074 such overlap can't happen in memory unless the user explicitly
2075 sets it up, and that is an undefined circumstance. */
2077 if (optype0 == PUSHOP || optype1 == PUSHOP
2078 || (optype0 == REGOP && optype1 == REGOP
2079 && ((middlehalf[1] && REGNO (operands[0]) == REGNO (middlehalf[1]))
2080 || REGNO (operands[0]) == REGNO (latehalf[1])))
2081 || dest_overlapped_low)
2083 /* Make any unoffsettable addresses point at high-numbered word. */
2087 output_asm_insn ("addq%.l %#8,%0", &addreg0);
2089 output_asm_insn ("addq%.l %#4,%0", &addreg0);
2094 output_asm_insn ("addq%.l %#8,%0", &addreg1);
2096 output_asm_insn ("addq%.l %#4,%0", &addreg1);
2100 output_asm_insn (singlemove_string (latehalf), latehalf);
2102 /* Undo the adds we just did. */
2104 output_asm_insn ("subq%.l %#4,%0", &addreg0);
2106 output_asm_insn ("subq%.l %#4,%0", &addreg1);
2110 output_asm_insn (singlemove_string (middlehalf), middlehalf);
2112 output_asm_insn ("subq%.l %#4,%0", &addreg0);
2114 output_asm_insn ("subq%.l %#4,%0", &addreg1);
2117 /* Do low-numbered word. */
2118 return singlemove_string (operands);
2121 /* Normal case: do the two words, low-numbered first. */
2123 output_asm_insn (singlemove_string (operands), operands);
2125 /* Do the middle one of the three words for long double */
2129 output_asm_insn ("addq%.l %#4,%0", &addreg0);
2131 output_asm_insn ("addq%.l %#4,%0", &addreg1);
2133 output_asm_insn (singlemove_string (middlehalf), middlehalf);
2136 /* Make any unoffsettable addresses point at high-numbered word. */
2138 output_asm_insn ("addq%.l %#4,%0", &addreg0);
2140 output_asm_insn ("addq%.l %#4,%0", &addreg1);
2143 output_asm_insn (singlemove_string (latehalf), latehalf);
2145 /* Undo the adds we just did. */
2149 output_asm_insn ("subq%.l %#8,%0", &addreg0);
2151 output_asm_insn ("subq%.l %#4,%0", &addreg0);
2156 output_asm_insn ("subq%.l %#8,%0", &addreg1);
2158 output_asm_insn ("subq%.l %#4,%0", &addreg1);
2164 /* Return a REG that occurs in ADDR with coefficient 1.
2165 ADDR can be effectively incremented by incrementing REG. */
2168 find_addr_reg (rtx addr)
2170 while (GET_CODE (addr) == PLUS)
2172 if (GET_CODE (XEXP (addr, 0)) == REG)
2173 addr = XEXP (addr, 0);
2174 else if (GET_CODE (XEXP (addr, 1)) == REG)
2175 addr = XEXP (addr, 1);
2176 else if (CONSTANT_P (XEXP (addr, 0)))
2177 addr = XEXP (addr, 1);
2178 else if (CONSTANT_P (XEXP (addr, 1)))
2179 addr = XEXP (addr, 0);
2183 if (GET_CODE (addr) == REG)
2188 /* Output assembler code to perform a 32 bit 3 operand add. */
2191 output_addsi3 (rtx *operands)
2193 if (! operands_match_p (operands[0], operands[1]))
2195 if (!ADDRESS_REG_P (operands[1]))
2197 rtx tmp = operands[1];
2199 operands[1] = operands[2];
2203 /* These insns can result from reloads to access
2204 stack slots over 64k from the frame pointer. */
2205 if (GET_CODE (operands[2]) == CONST_INT
2206 && INTVAL (operands[2]) + 0x8000 >= (unsigned) 0x10000)
2207 return "move%.l %2,%0\n\tadd%.l %1,%0";
2209 if (GET_CODE (operands[2]) == REG)
2210 return "lea 0(%1,%2.l),%0";
2212 return "lea %c2(%1),%0";
2213 #elif defined(MOTOROLA)
2214 if (GET_CODE (operands[2]) == REG)
2215 return "lea (%1,%2.l),%0";
2217 return "lea (%c2,%1),%0";
2218 #else /* not MOTOROLA (MIT syntax) */
2219 if (GET_CODE (operands[2]) == REG)
2220 return "lea %1@(0,%2:l),%0";
2222 return "lea %1@(%c2),%0";
2223 #endif /* not MOTOROLA */
2225 if (GET_CODE (operands[2]) == CONST_INT)
2227 if (INTVAL (operands[2]) > 0
2228 && INTVAL (operands[2]) <= 8)
2229 return "addq%.l %2,%0";
2230 if (INTVAL (operands[2]) < 0
2231 && INTVAL (operands[2]) >= -8)
2233 operands[2] = GEN_INT (- INTVAL (operands[2]));
2234 return "subq%.l %2,%0";
2236 /* On the CPU32 it is faster to use two addql instructions to
2237 add a small integer (8 < N <= 16) to a register.
2238 Likewise for subql. */
2239 if (TARGET_CPU32 && REG_P (operands[0]))
2241 if (INTVAL (operands[2]) > 8
2242 && INTVAL (operands[2]) <= 16)
2244 operands[2] = GEN_INT (INTVAL (operands[2]) - 8);
2245 return "addq%.l %#8,%0\n\taddq%.l %2,%0";
2247 if (INTVAL (operands[2]) < -8
2248 && INTVAL (operands[2]) >= -16)
2250 operands[2] = GEN_INT (- INTVAL (operands[2]) - 8);
2251 return "subq%.l %#8,%0\n\tsubq%.l %2,%0";
2254 if (ADDRESS_REG_P (operands[0])
2255 && INTVAL (operands[2]) >= -0x8000
2256 && INTVAL (operands[2]) < 0x8000)
2259 return "add%.w %2,%0";
2262 return "lea (%c2,%0),%0";
2264 return "lea %0@(%c2),%0";
2268 return "add%.l %2,%0";
2271 /* Store in cc_status the expressions that the condition codes will
2272 describe after execution of an instruction whose pattern is EXP.
2273 Do not alter them if the instruction would not alter the cc's. */
2275 /* On the 68000, all the insns to store in an address register fail to
2276 set the cc's. However, in some cases these instructions can make it
2277 possibly invalid to use the saved cc's. In those cases we clear out
2278 some or all of the saved cc's so they won't be used. */
2281 notice_update_cc (rtx exp, rtx insn)
2283 if (GET_CODE (exp) == SET)
2285 if (GET_CODE (SET_SRC (exp)) == CALL)
2289 else if (ADDRESS_REG_P (SET_DEST (exp)))
2291 if (cc_status.value1 && modified_in_p (cc_status.value1, insn))
2292 cc_status.value1 = 0;
2293 if (cc_status.value2 && modified_in_p (cc_status.value2, insn))
2294 cc_status.value2 = 0;
2296 else if (!FP_REG_P (SET_DEST (exp))
2297 && SET_DEST (exp) != cc0_rtx
2298 && (FP_REG_P (SET_SRC (exp))
2299 || GET_CODE (SET_SRC (exp)) == FIX
2300 || GET_CODE (SET_SRC (exp)) == FLOAT_TRUNCATE
2301 || GET_CODE (SET_SRC (exp)) == FLOAT_EXTEND))
2305 /* A pair of move insns doesn't produce a useful overall cc. */
2306 else if (!FP_REG_P (SET_DEST (exp))
2307 && !FP_REG_P (SET_SRC (exp))
2308 && GET_MODE_SIZE (GET_MODE (SET_SRC (exp))) > 4
2309 && (GET_CODE (SET_SRC (exp)) == REG
2310 || GET_CODE (SET_SRC (exp)) == MEM
2311 || GET_CODE (SET_SRC (exp)) == CONST_DOUBLE))
2315 else if (GET_CODE (SET_SRC (exp)) == CALL)
2319 else if (XEXP (exp, 0) != pc_rtx)
2321 cc_status.flags = 0;
2322 cc_status.value1 = XEXP (exp, 0);
2323 cc_status.value2 = XEXP (exp, 1);
2326 else if (GET_CODE (exp) == PARALLEL
2327 && GET_CODE (XVECEXP (exp, 0, 0)) == SET)
2329 if (ADDRESS_REG_P (XEXP (XVECEXP (exp, 0, 0), 0)))
2331 else if (XEXP (XVECEXP (exp, 0, 0), 0) != pc_rtx)
2333 cc_status.flags = 0;
2334 cc_status.value1 = XEXP (XVECEXP (exp, 0, 0), 0);
2335 cc_status.value2 = XEXP (XVECEXP (exp, 0, 0), 1);
2340 if (cc_status.value2 != 0
2341 && ADDRESS_REG_P (cc_status.value2)
2342 && GET_MODE (cc_status.value2) == QImode)
2344 if (cc_status.value2 != 0)
2345 switch (GET_CODE (cc_status.value2))
2347 case PLUS: case MINUS: case MULT:
2348 case DIV: case UDIV: case MOD: case UMOD: case NEG:
2349 #if 0 /* These instructions always clear the overflow bit */
2350 case ASHIFT: case ASHIFTRT: case LSHIFTRT:
2351 case ROTATE: case ROTATERT:
2353 if (GET_MODE (cc_status.value2) != VOIDmode)
2354 cc_status.flags |= CC_NO_OVERFLOW;
2357 /* (SET r1 (ZERO_EXTEND r2)) on this machine
2358 ends with a move insn moving r2 in r2's mode.
2359 Thus, the cc's are set for r2.
2360 This can set N bit spuriously. */
2361 cc_status.flags |= CC_NOT_NEGATIVE;
2366 if (cc_status.value1 && GET_CODE (cc_status.value1) == REG
2368 && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2))
2369 cc_status.value2 = 0;
2370 if (((cc_status.value1 && FP_REG_P (cc_status.value1))
2371 || (cc_status.value2 && FP_REG_P (cc_status.value2))))
2372 cc_status.flags = CC_IN_68881;
2376 output_move_const_double (rtx *operands)
2378 int code = standard_68881_constant_p (operands[1]);
2382 static char buf[40];
2384 sprintf (buf, "fmovecr %%#0x%x,%%0", code & 0xff);
2387 return "fmove%.d %1,%0";
2391 output_move_const_single (rtx *operands)
2393 int code = standard_68881_constant_p (operands[1]);
2397 static char buf[40];
2399 sprintf (buf, "fmovecr %%#0x%x,%%0", code & 0xff);
2402 return "fmove%.s %f1,%0";
2405 /* Return nonzero if X, a CONST_DOUBLE, has a value that we can get
2406 from the "fmovecr" instruction.
2407 The value, anded with 0xff, gives the code to use in fmovecr
2408 to get the desired constant. */
2410 /* This code has been fixed for cross-compilation. */
2412 static int inited_68881_table = 0;
2414 static const char *const strings_68881[7] = {
2424 static const int codes_68881[7] = {
2434 REAL_VALUE_TYPE values_68881[7];
2436 /* Set up values_68881 array by converting the decimal values
2437 strings_68881 to binary. */
2440 init_68881_table (void)
2444 enum machine_mode mode;
2447 for (i = 0; i < 7; i++)
2451 r = REAL_VALUE_ATOF (strings_68881[i], mode);
2452 values_68881[i] = r;
2454 inited_68881_table = 1;
2458 standard_68881_constant_p (rtx x)
2463 /* fmovecr must be emulated on the 68040 and 68060, so it shouldn't be
2464 used at all on those chips. */
2465 if (TARGET_68040 || TARGET_68060)
2468 if (! inited_68881_table)
2469 init_68881_table ();
2471 REAL_VALUE_FROM_CONST_DOUBLE (r, x);
2473 /* Use REAL_VALUES_IDENTICAL instead of REAL_VALUES_EQUAL so that -0.0
2475 for (i = 0; i < 6; i++)
2477 if (REAL_VALUES_IDENTICAL (r, values_68881[i]))
2478 return (codes_68881[i]);
2481 if (GET_MODE (x) == SFmode)
2484 if (REAL_VALUES_EQUAL (r, values_68881[6]))
2485 return (codes_68881[6]);
2487 /* larger powers of ten in the constants ram are not used
2488 because they are not equal to a `double' C constant. */
2492 /* If X is a floating-point constant, return the logarithm of X base 2,
2493 or 0 if X is not a power of 2. */
2496 floating_exact_log2 (rtx x)
2498 REAL_VALUE_TYPE r, r1;
2501 REAL_VALUE_FROM_CONST_DOUBLE (r, x);
2503 if (REAL_VALUES_LESS (r, dconst1))
2506 exp = real_exponent (&r);
2507 real_2expN (&r1, exp);
2508 if (REAL_VALUES_EQUAL (r1, r))
2514 /* A C compound statement to output to stdio stream STREAM the
2515 assembler syntax for an instruction operand X. X is an RTL
2518 CODE is a value that can be used to specify one of several ways
2519 of printing the operand. It is used when identical operands
2520 must be printed differently depending on the context. CODE
2521 comes from the `%' specification that was used to request
2522 printing of the operand. If the specification was just `%DIGIT'
2523 then CODE is 0; if the specification was `%LTR DIGIT' then CODE
2524 is the ASCII code for LTR.
2526 If X is a register, this macro should print the register's name.
2527 The names can be found in an array `reg_names' whose type is
2528 `char *[]'. `reg_names' is initialized from `REGISTER_NAMES'.
2530 When the machine description has a specification `%PUNCT' (a `%'
2531 followed by a punctuation character), this macro is called with
2532 a null pointer for X and the punctuation character for CODE.
2534 The m68k specific codes are:
2536 '.' for dot needed in Motorola-style opcode names.
2537 '-' for an operand pushing on the stack:
2538 sp@-, -(sp) or -(%sp) depending on the style of syntax.
2539 '+' for an operand pushing on the stack:
2540 sp@+, (sp)+ or (%sp)+ depending on the style of syntax.
2541 '@' for a reference to the top word on the stack:
2542 sp@, (sp) or (%sp) depending on the style of syntax.
2543 '#' for an immediate operand prefix (# in MIT and Motorola syntax
2544 but & in SGS syntax).
2545 '!' for the cc register (used in an `and to cc' insn).
2546 '$' for the letter `s' in an op code, but only on the 68040.
2547 '&' for the letter `d' in an op code, but only on the 68040.
2548 '/' for register prefix needed by longlong.h.
2550 'b' for byte insn (no effect, on the Sun; this is for the ISI).
2551 'd' to force memory addressing to be absolute, not relative.
2552 'f' for float insn (print a CONST_DOUBLE as a float rather than in hex)
2553 'o' for operands to go directly to output_operand_address (bypassing
2554 print_operand_address--used only for SYMBOL_REFs under TARGET_PCREL)
2555 'x' for float insn (print a CONST_DOUBLE as a float rather than in hex),
2556 or print pair of registers as rx:ry.
2561 print_operand (FILE *file, rtx op, int letter)
2565 #if defined (MOTOROLA)
2566 fprintf (file, ".");
2569 else if (letter == '#')
2571 asm_fprintf (file, "%I");
2573 else if (letter == '-')
2576 asm_fprintf (file, "-(%Rsp)");
2578 asm_fprintf (file, "%Rsp@-");
2581 else if (letter == '+')
2584 asm_fprintf (file, "(%Rsp)+");
2586 asm_fprintf (file, "%Rsp@+");
2589 else if (letter == '@')
2592 asm_fprintf (file, "(%Rsp)");
2594 asm_fprintf (file, "%Rsp@");
2597 else if (letter == '!')
2599 asm_fprintf (file, "%Rfpcr");
2601 else if (letter == '$')
2603 if (TARGET_68040_ONLY)
2605 fprintf (file, "s");
2608 else if (letter == '&')
2610 if (TARGET_68040_ONLY)
2612 fprintf (file, "d");
2615 else if (letter == '/')
2617 asm_fprintf (file, "%R");
2619 else if (letter == 'o')
2621 /* This is only for direct addresses with TARGET_PCREL */
2622 if (GET_CODE (op) != MEM || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
2625 output_addr_const (file, XEXP (op, 0));
2627 else if (GET_CODE (op) == REG)
2630 /* Print out the second register name of a register pair.
2631 I.e., R (6) => 7. */
2632 fputs (reg_names[REGNO (op) + 1], file);
2634 fputs (reg_names[REGNO (op)], file);
2636 else if (GET_CODE (op) == MEM)
2638 output_address (XEXP (op, 0));
2639 if (letter == 'd' && ! TARGET_68020
2640 && CONSTANT_ADDRESS_P (XEXP (op, 0))
2641 && !(GET_CODE (XEXP (op, 0)) == CONST_INT
2642 && INTVAL (XEXP (op, 0)) < 0x8000
2643 && INTVAL (XEXP (op, 0)) >= -0x8000))
2646 fprintf (file, ".l");
2648 fprintf (file, ":l");
2652 else if (GET_CODE (op) == CONST_DOUBLE && GET_MODE (op) == SFmode)
2655 REAL_VALUE_FROM_CONST_DOUBLE (r, op);
2656 ASM_OUTPUT_FLOAT_OPERAND (letter, file, r);
2658 else if (GET_CODE (op) == CONST_DOUBLE && GET_MODE (op) == XFmode)
2661 REAL_VALUE_FROM_CONST_DOUBLE (r, op);
2662 ASM_OUTPUT_LONG_DOUBLE_OPERAND (file, r);
2664 else if (GET_CODE (op) == CONST_DOUBLE && GET_MODE (op) == DFmode)
2667 REAL_VALUE_FROM_CONST_DOUBLE (r, op);
2668 ASM_OUTPUT_DOUBLE_OPERAND (file, r);
2672 /* Use `print_operand_address' instead of `output_addr_const'
2673 to ensure that we print relevant PIC stuff. */
2674 asm_fprintf (file, "%I");
2676 && (GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == CONST))
2677 print_operand_address (file, op);
2679 output_addr_const (file, op);
2684 /* A C compound statement to output to stdio stream STREAM the
2685 assembler syntax for an instruction operand that is a memory
2686 reference whose address is ADDR. ADDR is an RTL expression.
2688 Note that this contains a kludge that knows that the only reason
2689 we have an address (plus (label_ref...) (reg...)) when not generating
2690 PIC code is in the insn before a tablejump, and we know that m68k.md
2691 generates a label LInnn: on such an insn.
2693 It is possible for PIC to generate a (plus (label_ref...) (reg...))
2694 and we handle that just like we would a (plus (symbol_ref...) (reg...)).
2696 Some SGS assemblers have a bug such that "Lnnn-LInnn-2.b(pc,d0.l*2)"
2697 fails to assemble. Luckily "Lnnn(pc,d0.l*2)" produces the results
2698 we want. This difference can be accommodated by using an assembler
2699 define such "LDnnn" to be either "Lnnn-LInnn-2.b", "Lnnn", or any other
2700 string, as necessary. This is accomplished via the ASM_OUTPUT_CASE_END
2701 macro. See m68k/sgs.h for an example; for versions without the bug.
2702 Some assemblers refuse all the above solutions. The workaround is to
2703 emit "K(pc,d0.l*2)" with K being a small constant known to give the
2706 They also do not like things like "pea 1.w", so we simple leave off
2707 the .w on small constants.
2709 This routine is responsible for distinguishing between -fpic and -fPIC
2710 style relocations in an address. When generating -fpic code the
2711 offset is output in word mode (eg movel a5@(_foo:w), a0). When generating
2712 -fPIC code the offset is output in long mode (eg movel a5@(_foo:l), a0) */
2714 #ifndef ASM_OUTPUT_CASE_FETCH
2717 #define ASM_OUTPUT_CASE_FETCH(file, labelno, regname)\
2718 asm_fprintf (file, "%LLD%d(%Rpc,%s.", labelno, regname)
2720 #define ASM_OUTPUT_CASE_FETCH(file, labelno, regname)\
2721 asm_fprintf (file, "%LL%d-%LLI%d.b(%Rpc,%s.", labelno, labelno, regname)
2724 #define ASM_OUTPUT_CASE_FETCH(file, labelno, regname)\
2725 asm_fprintf (file, "%Rpc@(%LL%d-%LLI%d-2:b,%s:", labelno, labelno, regname)
2727 #endif /* ASM_OUTPUT_CASE_FETCH */
2730 print_operand_address (FILE *file, rtx addr)
2732 register rtx reg1, reg2, breg, ireg;
2735 switch (GET_CODE (addr))
2739 fprintf (file, "(%s)", reg_names[REGNO (addr)]);
2741 fprintf (file, "%s@", reg_names[REGNO (addr)]);
2746 fprintf (file, "-(%s)", reg_names[REGNO (XEXP (addr, 0))]);
2748 fprintf (file, "%s@-", reg_names[REGNO (XEXP (addr, 0))]);
2753 fprintf (file, "(%s)+", reg_names[REGNO (XEXP (addr, 0))]);
2755 fprintf (file, "%s@+", reg_names[REGNO (XEXP (addr, 0))]);
2759 reg1 = reg2 = ireg = breg = offset = 0;
2760 if (CONSTANT_ADDRESS_P (XEXP (addr, 0)))
2762 offset = XEXP (addr, 0);
2763 addr = XEXP (addr, 1);
2765 else if (CONSTANT_ADDRESS_P (XEXP (addr, 1)))
2767 offset = XEXP (addr, 1);
2768 addr = XEXP (addr, 0);
2770 if (GET_CODE (addr) != PLUS)
2774 else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND)
2776 reg1 = XEXP (addr, 0);
2777 addr = XEXP (addr, 1);
2779 else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND)
2781 reg1 = XEXP (addr, 1);
2782 addr = XEXP (addr, 0);
2784 else if (GET_CODE (XEXP (addr, 0)) == MULT)
2786 reg1 = XEXP (addr, 0);
2787 addr = XEXP (addr, 1);
2789 else if (GET_CODE (XEXP (addr, 1)) == MULT)
2791 reg1 = XEXP (addr, 1);
2792 addr = XEXP (addr, 0);
2794 else if (GET_CODE (XEXP (addr, 0)) == REG)
2796 reg1 = XEXP (addr, 0);
2797 addr = XEXP (addr, 1);
2799 else if (GET_CODE (XEXP (addr, 1)) == REG)
2801 reg1 = XEXP (addr, 1);
2802 addr = XEXP (addr, 0);
2804 if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT
2805 || GET_CODE (addr) == SIGN_EXTEND)
2817 #if 0 /* for OLD_INDEXING */
2818 else if (GET_CODE (addr) == PLUS)
2820 if (GET_CODE (XEXP (addr, 0)) == REG)
2822 reg2 = XEXP (addr, 0);
2823 addr = XEXP (addr, 1);
2825 else if (GET_CODE (XEXP (addr, 1)) == REG)
2827 reg2 = XEXP (addr, 1);
2828 addr = XEXP (addr, 0);
2840 if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND
2841 || GET_CODE (reg1) == MULT))
2842 || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2))))
2847 else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1)))
2852 if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF
2853 && ! (flag_pic && ireg == pic_offset_table_rtx))
2856 if (GET_CODE (ireg) == MULT)
2858 scale = INTVAL (XEXP (ireg, 1));
2859 ireg = XEXP (ireg, 0);
2861 if (GET_CODE (ireg) == SIGN_EXTEND)
2863 ASM_OUTPUT_CASE_FETCH (file,
2864 CODE_LABEL_NUMBER (XEXP (addr, 0)),
2865 reg_names[REGNO (XEXP (ireg, 0))]);
2866 fprintf (file, "w");
2870 ASM_OUTPUT_CASE_FETCH (file,
2871 CODE_LABEL_NUMBER (XEXP (addr, 0)),
2872 reg_names[REGNO (ireg)]);
2873 fprintf (file, "l");
2878 fprintf (file, "*%d", scale);
2880 fprintf (file, ":%d", scale);
2886 if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF
2887 && ! (flag_pic && breg == pic_offset_table_rtx))
2889 ASM_OUTPUT_CASE_FETCH (file,
2890 CODE_LABEL_NUMBER (XEXP (addr, 0)),
2891 reg_names[REGNO (breg)]);
2892 fprintf (file, "l)");
2895 if (ireg != 0 || breg != 0)
2902 if (! flag_pic && addr && GET_CODE (addr) == LABEL_REF)
2909 output_addr_const (file, addr);
2910 if (flag_pic && (breg == pic_offset_table_rtx))
2912 fprintf (file, "@GOT");
2914 fprintf (file, ".w");
2917 fprintf (file, "(%s", reg_names[REGNO (breg)]);
2923 fprintf (file, "%s@(", reg_names[REGNO (breg)]);
2926 output_addr_const (file, addr);
2927 if ((flag_pic == 1) && (breg == pic_offset_table_rtx))
2928 fprintf (file, ":w");
2929 if ((flag_pic == 2) && (breg == pic_offset_table_rtx))
2930 fprintf (file, ":l");
2932 if (addr != 0 && ireg != 0)
2937 if (ireg != 0 && GET_CODE (ireg) == MULT)
2939 scale = INTVAL (XEXP (ireg, 1));
2940 ireg = XEXP (ireg, 0);
2942 if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND)
2945 fprintf (file, "%s.w", reg_names[REGNO (XEXP (ireg, 0))]);
2947 fprintf (file, "%s:w", reg_names[REGNO (XEXP (ireg, 0))]);
2953 fprintf (file, "%s.l", reg_names[REGNO (ireg)]);
2955 fprintf (file, "%s:l", reg_names[REGNO (ireg)]);
2961 fprintf (file, "*%d", scale);
2963 fprintf (file, ":%d", scale);
2969 else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF
2970 && ! (flag_pic && reg1 == pic_offset_table_rtx))
2972 ASM_OUTPUT_CASE_FETCH (file,
2973 CODE_LABEL_NUMBER (XEXP (addr, 0)),
2974 reg_names[REGNO (reg1)]);
2975 fprintf (file, "l)");
2978 /* FALL-THROUGH (is this really what we want?) */
2980 if (GET_CODE (addr) == CONST_INT
2981 && INTVAL (addr) < 0x8000
2982 && INTVAL (addr) >= -0x8000)
2986 /* Many SGS assemblers croak on size specifiers for constants. */
2987 fprintf (file, "%d", (int) INTVAL (addr));
2989 fprintf (file, "%d.w", (int) INTVAL (addr));
2992 fprintf (file, "%d:w", (int) INTVAL (addr));
2995 else if (GET_CODE (addr) == CONST_INT)
2997 fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (addr));
2999 else if (TARGET_PCREL)
3002 output_addr_const (file, addr);
3004 asm_fprintf (file, ":w,%Rpc)");
3006 asm_fprintf (file, ":l,%Rpc)");
3010 /* Special case for SYMBOL_REF if the symbol name ends in
3011 `.<letter>', this can be mistaken as a size suffix. Put
3012 the name in parentheses. */
3013 if (GET_CODE (addr) == SYMBOL_REF
3014 && strlen (XSTR (addr, 0)) > 2
3015 && XSTR (addr, 0)[strlen (XSTR (addr, 0)) - 2] == '.')
3018 output_addr_const (file, addr);
3022 output_addr_const (file, addr);
3028 /* Check for cases where a clr insns can be omitted from code using
3029 strict_low_part sets. For example, the second clrl here is not needed:
3030 clrl d0; movw a0@+,d0; use d0; clrl d0; movw a0@+; use d0; ...
3032 MODE is the mode of this STRICT_LOW_PART set. FIRST_INSN is the clear
3033 insn we are checking for redundancy. TARGET is the register set by the
3037 strict_low_part_peephole_ok (enum machine_mode mode, rtx first_insn,
3042 p = prev_nonnote_insn (first_insn);
3046 /* If it isn't an insn, then give up. */
3047 if (GET_CODE (p) != INSN)
3050 if (reg_set_p (target, p))
3052 rtx set = single_set (p);
3055 /* If it isn't an easy to recognize insn, then give up. */
3059 dest = SET_DEST (set);
3061 /* If this sets the entire target register to zero, then our
3062 first_insn is redundant. */
3063 if (rtx_equal_p (dest, target)
3064 && SET_SRC (set) == const0_rtx)
3066 else if (GET_CODE (dest) == STRICT_LOW_PART
3067 && GET_CODE (XEXP (dest, 0)) == REG
3068 && REGNO (XEXP (dest, 0)) == REGNO (target)
3069 && (GET_MODE_SIZE (GET_MODE (XEXP (dest, 0)))
3070 <= GET_MODE_SIZE (mode)))
3071 /* This is a strict low part set which modifies less than
3072 we are using, so it is safe. */
3078 p = prev_nonnote_insn (p);
3085 /* Accept integer operands in the range 0..0xffffffff. We have to check the
3086 range carefully since this predicate is used in DImode contexts. Also, we
3087 need some extra crud to make it work when hosted on 64-bit machines. */
3090 const_uint32_operand (rtx op, enum machine_mode mode)
3092 /* It doesn't make sense to ask this question with a mode that is
3093 not larger than 32 bits. */
3094 if (GET_MODE_BITSIZE (mode) <= 32)
3097 #if HOST_BITS_PER_WIDE_INT > 32
3098 /* All allowed constants will fit a CONST_INT. */
3099 return (GET_CODE (op) == CONST_INT
3100 && (INTVAL (op) >= 0 && INTVAL (op) <= 0xffffffffL));
3102 return (GET_CODE (op) == CONST_INT
3103 || (GET_CODE (op) == CONST_DOUBLE && CONST_DOUBLE_HIGH (op) == 0));
3107 /* Accept integer operands in the range -0x80000000..0x7fffffff. We have
3108 to check the range carefully since this predicate is used in DImode
3112 const_sint32_operand (rtx op, enum machine_mode mode)
3114 /* It doesn't make sense to ask this question with a mode that is
3115 not larger than 32 bits. */
3116 if (GET_MODE_BITSIZE (mode) <= 32)
3119 /* All allowed constants will fit a CONST_INT. */
3120 return (GET_CODE (op) == CONST_INT
3121 && (INTVAL (op) >= (-0x7fffffff - 1) && INTVAL (op) <= 0x7fffffff));
3124 /* Operand predicates for implementing asymmetric pc-relative addressing
3125 on m68k. The m68k supports pc-relative addressing (mode 7, register 2)
3126 when used as a source operand, but not as a destination operand.
3128 We model this by restricting the meaning of the basic predicates
3129 (general_operand, memory_operand, etc) to forbid the use of this
3130 addressing mode, and then define the following predicates that permit
3131 this addressing mode. These predicates can then be used for the
3132 source operands of the appropriate instructions.
3134 n.b. While it is theoretically possible to change all machine patterns
3135 to use this addressing more where permitted by the architecture,
3136 it has only been implemented for "common" cases: SImode, HImode, and
3137 QImode operands, and only for the principle operations that would
3138 require this addressing mode: data movement and simple integer operations.
3140 In parallel with these new predicates, two new constraint letters
3141 were defined: 'S' and 'T'. 'S' is the -mpcrel analog of 'm'.
3142 'T' replaces 's' in the non-pcrel case. It is a no-op in the pcrel case.
3143 In the pcrel case 's' is only valid in combination with 'a' registers.
3144 See addsi3, subsi3, cmpsi, and movsi patterns for a better understanding
3145 of how these constraints are used.
3147 The use of these predicates is strictly optional, though patterns that
3148 don't will cause an extra reload register to be allocated where one
3151 lea (abc:w,%pc),%a0 ; need to reload address
3152 moveq &1,%d1 ; since write to pc-relative space
3153 movel %d1,%a0@ ; is not allowed
3155 lea (abc:w,%pc),%a1 ; no need to reload address here
3156 movel %a1@,%d0 ; since "movel (abc:w,%pc),%d0" is ok
3158 For more info, consult tiemann@cygnus.com.
3161 All of the ugliness with predicates and constraints is due to the
3162 simple fact that the m68k does not allow a pc-relative addressing
3163 mode as a destination. gcc does not distinguish between source and
3164 destination addresses. Hence, if we claim that pc-relative address
3165 modes are valid, e.g. GO_IF_LEGITIMATE_ADDRESS accepts them, then we
3166 end up with invalid code. To get around this problem, we left
3167 pc-relative modes as invalid addresses, and then added special
3168 predicates and constraints to accept them.
3170 A cleaner way to handle this is to modify gcc to distinguish
3171 between source and destination addresses. We can then say that
3172 pc-relative is a valid source address but not a valid destination
3173 address, and hopefully avoid a lot of the predicate and constraint
3174 hackery. Unfortunately, this would be a pretty big change. It would
3175 be a useful change for a number of ports, but there aren't any current
3176 plans to undertake this.
3178 ***************************************************************************/
3181 /* Special case of a general operand that's used as a source operand.
3182 Use this to permit reads from PC-relative memory when -mpcrel
3186 general_src_operand (rtx op, enum machine_mode mode)
3189 && GET_CODE (op) == MEM
3190 && (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
3191 || GET_CODE (XEXP (op, 0)) == LABEL_REF
3192 || GET_CODE (XEXP (op, 0)) == CONST))
3194 return general_operand (op, mode);
3197 /* Special case of a nonimmediate operand that's used as a source.
3198 Use this to permit reads from PC-relative memory when -mpcrel
3202 nonimmediate_src_operand (rtx op, enum machine_mode mode)
3204 if (TARGET_PCREL && GET_CODE (op) == MEM
3205 && (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
3206 || GET_CODE (XEXP (op, 0)) == LABEL_REF
3207 || GET_CODE (XEXP (op, 0)) == CONST))
3209 return nonimmediate_operand (op, mode);
3212 /* Special case of a memory operand that's used as a source.
3213 Use this to permit reads from PC-relative memory when -mpcrel
3217 memory_src_operand (rtx op, enum machine_mode mode)
3219 if (TARGET_PCREL && GET_CODE (op) == MEM
3220 && (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
3221 || GET_CODE (XEXP (op, 0)) == LABEL_REF
3222 || GET_CODE (XEXP (op, 0)) == CONST))
3224 return memory_operand (op, mode);
3227 /* Predicate that accepts only a pc-relative address. This is needed
3228 because pc-relative addresses don't satisfy the predicate
3229 "general_src_operand". */
3232 pcrel_address (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
3234 return (GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == LABEL_REF
3235 || GET_CODE (op) == CONST);
3239 output_andsi3 (rtx *operands)
3242 if (GET_CODE (operands[2]) == CONST_INT
3243 && (INTVAL (operands[2]) | 0xffff) == 0xffffffff
3244 && (DATA_REG_P (operands[0])
3245 || offsettable_memref_p (operands[0]))
3246 && !TARGET_COLDFIRE)
3248 if (GET_CODE (operands[0]) != REG)
3249 operands[0] = adjust_address (operands[0], HImode, 2);
3250 operands[2] = GEN_INT (INTVAL (operands[2]) & 0xffff);
3251 /* Do not delete a following tstl %0 insn; that would be incorrect. */
3253 if (operands[2] == const0_rtx)
3255 return "and%.w %2,%0";
3257 if (GET_CODE (operands[2]) == CONST_INT
3258 && (logval = exact_log2 (~ INTVAL (operands[2]))) >= 0
3259 && (DATA_REG_P (operands[0])
3260 || offsettable_memref_p (operands[0])))
3262 if (DATA_REG_P (operands[0]))
3264 operands[1] = GEN_INT (logval);
3268 operands[0] = adjust_address (operands[0], SImode, 3 - (logval / 8));
3269 operands[1] = GEN_INT (logval % 8);
3271 /* This does not set condition codes in a standard way. */
3273 return "bclr %1,%0";
3275 return "and%.l %2,%0";
3279 output_iorsi3 (rtx *operands)
3281 register int logval;
3282 if (GET_CODE (operands[2]) == CONST_INT
3283 && INTVAL (operands[2]) >> 16 == 0
3284 && (DATA_REG_P (operands[0])
3285 || offsettable_memref_p (operands[0]))
3286 && !TARGET_COLDFIRE)
3288 if (GET_CODE (operands[0]) != REG)
3289 operands[0] = adjust_address (operands[0], HImode, 2);
3290 /* Do not delete a following tstl %0 insn; that would be incorrect. */
3292 if (INTVAL (operands[2]) == 0xffff)
3293 return "mov%.w %2,%0";
3294 return "or%.w %2,%0";
3296 if (GET_CODE (operands[2]) == CONST_INT
3297 && (logval = exact_log2 (INTVAL (operands[2]))) >= 0
3298 && (DATA_REG_P (operands[0])
3299 || offsettable_memref_p (operands[0])))
3301 if (DATA_REG_P (operands[0]))
3302 operands[1] = GEN_INT (logval);
3305 operands[0] = adjust_address (operands[0], SImode, 3 - (logval / 8));
3306 operands[1] = GEN_INT (logval % 8);
3309 return "bset %1,%0";
3311 return "or%.l %2,%0";
3315 output_xorsi3 (rtx *operands)
3317 register int logval;
3318 if (GET_CODE (operands[2]) == CONST_INT
3319 && INTVAL (operands[2]) >> 16 == 0
3320 && (offsettable_memref_p (operands[0]) || DATA_REG_P (operands[0]))
3321 && !TARGET_COLDFIRE)
3323 if (! DATA_REG_P (operands[0]))
3324 operands[0] = adjust_address (operands[0], HImode, 2);
3325 /* Do not delete a following tstl %0 insn; that would be incorrect. */
3327 if (INTVAL (operands[2]) == 0xffff)
3329 return "eor%.w %2,%0";
3331 if (GET_CODE (operands[2]) == CONST_INT
3332 && (logval = exact_log2 (INTVAL (operands[2]))) >= 0
3333 && (DATA_REG_P (operands[0])
3334 || offsettable_memref_p (operands[0])))
3336 if (DATA_REG_P (operands[0]))
3337 operands[1] = GEN_INT (logval);
3340 operands[0] = adjust_address (operands[0], SImode, 3 - (logval / 8));
3341 operands[1] = GEN_INT (logval % 8);
3344 return "bchg %1,%0";
3346 return "eor%.l %2,%0";
3349 /* Output assembly to switch to section NAME with attribute FLAGS. */
3352 m68k_coff_asm_named_section (const char *name, unsigned int flags)
3356 if (flags & SECTION_WRITE)
3361 fprintf (asm_out_file, "\t.section\t%s,\"%c\"\n", name, flagchar);
3364 #ifdef CTOR_LIST_BEGIN
3366 m68k_svr3_asm_out_constructor (rtx symbol, int priority ATTRIBUTE_UNUSED)
3371 xop[0] = gen_rtx_MEM (SImode, gen_rtx_PRE_DEC (SImode, stack_pointer_rtx));
3374 output_asm_insn (output_move_simode (xop), xop);
3380 m68k_hp320_internal_label (FILE *stream, const char *prefix,
3381 unsigned long labelno)
3383 if (prefix[0] == 'L' && prefix[1] == 'I')
3384 fprintf(stream, "\tset %s%ld,.+2\n", prefix, labelno);
3386 fprintf (stream, "%s%ld:\n", prefix, labelno);
3390 m68k_hp320_file_start (void)
3392 /* version 1: 68010.
3393 2: 68020 without FPU.
3394 3: 68020 with FPU. */
3395 fprintf (asm_out_file, "\tversion %d\n",
3396 TARGET_68020 ? (TARGET_68881 ? 3 : 2) : 1);
3401 m68k_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
3402 HOST_WIDE_INT delta,
3403 HOST_WIDE_INT vcall_offset ATTRIBUTE_UNUSED,
3409 if (delta > 0 && delta <= 8)
3411 asm_fprintf (file, "\taddq.l %I%d,4(%Rsp)\n", (int) delta);
3413 asm_fprintf (file, "\taddql %I%d,%Rsp@(4)\n", (int) delta);
3415 else if (delta < 0 && delta >= -8)
3417 asm_fprintf (file, "\tsubq.l %I%d,4(%Rsp)\n", (int) -delta);
3419 asm_fprintf (file, "\tsubql %I%d,%Rsp@(4)\n", (int) -delta);
3423 asm_fprintf (file, "\tadd.l %I%wd,4(%Rsp)\n", delta);
3425 asm_fprintf (file, "\taddl %I%wd,%Rsp@(4)\n", delta);
3428 xops[0] = DECL_RTL (function);
3430 /* Logic taken from call patterns in m68k.md. */
3442 fmt = "bra.l %0@PLTPC";
3444 fmt = "bra %0@PLTPC";