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 PARAMS ((rtx));
53 static const char *singlemove_string PARAMS ((rtx *));
54 static void m68k_output_function_prologue PARAMS ((FILE *, HOST_WIDE_INT));
55 static void m68k_output_function_epilogue PARAMS ((FILE *, HOST_WIDE_INT));
56 static void m68k_coff_asm_named_section PARAMS ((const char *, unsigned int));
57 #ifdef CTOR_LIST_BEGIN
58 static void m68k_svr3_asm_out_constructor PARAMS ((rtx, int));
61 static void m68k_hp320_internal_label PARAMS ((FILE *, const char *, unsigned long));
62 static void m68k_hp320_file_start PARAMS ((void));
64 static void m68k_output_mi_thunk PARAMS ((FILE *, tree, HOST_WIDE_INT,
65 HOST_WIDE_INT, tree));
66 static int m68k_save_reg PARAMS ((unsigned int));
67 static int const_int_cost PARAMS ((rtx));
68 static bool m68k_rtx_costs PARAMS ((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. */
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 (regno)
224 if (flag_pic && current_function_uses_pic_offset_table
225 && regno == PIC_OFFSET_TABLE_REGNUM)
228 if (current_function_calls_eh_return)
233 unsigned int test = EH_RETURN_DATA_REGNO (i);
234 if (test == INVALID_REGNUM)
241 return (regs_ever_live[regno]
242 && !call_used_regs[regno]
243 && !fixed_regs[regno]
244 && !(regno == FRAME_POINTER_REGNUM && frame_pointer_needed));
247 /* This function generates the assembly code for function entry.
248 STREAM is a stdio stream to output the code to.
249 SIZE is an int: how many units of temporary storage to allocate.
250 Refer to the array `regs_ever_live' to determine which registers
251 to save; `regs_ever_live[I]' is nonzero if register number I
252 is ever used in the function. This function is responsible for
253 knowing which registers should not be saved even if used. */
256 /* Note that the order of the bit mask for fmovem is the opposite
257 of the order for movem! */
260 m68k_output_function_prologue (stream, size)
265 register int mask = 0;
266 int num_saved_regs = 0;
267 HOST_WIDE_INT fsize = (size + 3) & -4;
268 HOST_WIDE_INT cfa_offset = INCOMING_FRAME_SP_OFFSET;
269 HOST_WIDE_INT cfa_store_offset = cfa_offset;
271 /* If the stack limit is a symbol, we can check it here,
272 before actually allocating the space. */
273 if (current_function_limit_stack
274 && GET_CODE (stack_limit_rtx) == SYMBOL_REF)
276 #if defined (MOTOROLA)
277 asm_fprintf (stream, "\tcmp.l %I%s+%wd,%Rsp\n\ttrapcs\n",
278 XSTR (stack_limit_rtx, 0), fsize + 4);
280 asm_fprintf (stream, "\tcmpl %I%s+%wd,%Rsp\n\ttrapcs\n",
281 XSTR (stack_limit_rtx, 0), fsize + 4);
285 if (frame_pointer_needed)
287 if (fsize == 0 && TARGET_68040)
289 /* on the 68040, pea + move is faster than link.w 0 */
291 fprintf (stream, "\tpea (%s)\n\tmove.l %s,%s\n",
292 reg_names[FRAME_POINTER_REGNUM],
293 reg_names[STACK_POINTER_REGNUM],
294 reg_names[FRAME_POINTER_REGNUM]);
296 fprintf (stream, "\tpea %s@\n\tmovel %s,%s\n",
297 reg_names[FRAME_POINTER_REGNUM],
298 reg_names[STACK_POINTER_REGNUM],
299 reg_names[FRAME_POINTER_REGNUM]);
302 else if (fsize < 0x8000)
305 asm_fprintf (stream, "\tlink.w %s,%I%wd\n",
306 reg_names[FRAME_POINTER_REGNUM], -fsize);
308 asm_fprintf (stream, "\tlink %s,%I%wd\n",
309 reg_names[FRAME_POINTER_REGNUM], -fsize);
312 else if (TARGET_68020)
315 asm_fprintf (stream, "\tlink.l %s,%I%wd\n",
316 reg_names[FRAME_POINTER_REGNUM], -fsize);
318 asm_fprintf (stream, "\tlink %s,%I%wd\n",
319 reg_names[FRAME_POINTER_REGNUM], -fsize);
324 /* Adding negative number is faster on the 68040. */
326 asm_fprintf (stream, "\tlink.w %s,%I0\n\tadd.l %I%wd,%Rsp\n",
327 reg_names[FRAME_POINTER_REGNUM], -fsize);
329 asm_fprintf (stream, "\tlink %s,%I0\n\taddl %I%wd,%Rsp\n",
330 reg_names[FRAME_POINTER_REGNUM], -fsize);
333 if (dwarf2out_do_frame ())
336 l = (char *) dwarf2out_cfi_label ();
337 cfa_store_offset += 4;
338 cfa_offset = cfa_store_offset;
339 dwarf2out_reg_save (l, FRAME_POINTER_REGNUM, -cfa_store_offset);
340 dwarf2out_def_cfa (l, FRAME_POINTER_REGNUM, cfa_offset);
341 cfa_store_offset += fsize;
346 if (fsize + 4 < 0x8000)
353 /* asm_fprintf() cannot handle %. */
355 asm_fprintf (stream, "\tsubq.w %I%wd,%Rsp\n", fsize + 4);
357 asm_fprintf (stream, "\tsubqw %I%wd,%Rsp\n", fsize + 4);
362 /* asm_fprintf() cannot handle %. */
364 asm_fprintf (stream, "\tsubq.l %I%wd,%Rsp\n", fsize + 4);
366 asm_fprintf (stream, "\tsubql %I%wd,%Rsp\n", fsize + 4);
370 else if (fsize + 4 <= 16 && TARGET_CPU32)
372 /* On the CPU32 it is faster to use two subqw instructions to
373 subtract a small integer (8 < N <= 16) to a register. */
374 /* asm_fprintf() cannot handle %. */
377 "\tsubq.w %I8,%Rsp\n\tsubq.w %I%wd,%Rsp\n",
380 asm_fprintf (stream, "\tsubqw %I8,%Rsp\n\tsubqw %I%wd,%Rsp\n",
385 #endif /* not NO_ADDSUB_Q */
388 /* Adding negative number is faster on the 68040. */
389 /* asm_fprintf() cannot handle %. */
391 asm_fprintf (stream, "\tadd.w %I%wd,%Rsp\n", - (fsize + 4));
393 asm_fprintf (stream, "\taddw %I%wd,%Rsp\n", - (fsize + 4));
399 asm_fprintf (stream, "\tlea (%wd,%Rsp),%Rsp\n", - (fsize + 4));
401 asm_fprintf (stream, "\tlea %Rsp@(%wd),%Rsp\n", - (fsize + 4));
407 /* asm_fprintf() cannot handle %. */
409 asm_fprintf (stream, "\tadd.l %I%wd,%Rsp\n", - (fsize + 4));
411 asm_fprintf (stream, "\taddl %I%wd,%Rsp\n", - (fsize + 4));
414 if (dwarf2out_do_frame ())
416 cfa_store_offset += fsize + 4;
417 cfa_offset = cfa_store_offset;
418 dwarf2out_def_cfa ("", STACK_POINTER_REGNUM, cfa_offset);
423 for (regno = 16; regno < 24; regno++)
424 if (m68k_save_reg (regno))
426 mask |= 1 << (regno - 16);
429 if ((mask & 0xff) != 0)
432 asm_fprintf (stream, "\tfmovm %I0x%x,-(%Rsp)\n", mask & 0xff);
434 asm_fprintf (stream, "\tfmovem %I0x%x,%Rsp@-\n", mask & 0xff);
436 if (dwarf2out_do_frame ())
438 char *l = (char *) dwarf2out_cfi_label ();
441 cfa_store_offset += num_saved_regs * 12;
442 if (! frame_pointer_needed)
444 cfa_offset = cfa_store_offset;
445 dwarf2out_def_cfa (l, STACK_POINTER_REGNUM, cfa_offset);
447 for (regno = 16, n_regs = 0; regno < 24; regno++)
448 if (mask & (1 << (regno - 16)))
449 dwarf2out_reg_save (l, regno,
450 -cfa_store_offset + n_regs++ * 12);
456 for (regno = 0; regno < 16; regno++)
457 if (m68k_save_reg (regno))
459 mask |= 1 << (15 - regno);
463 /* If the stack limit is not a symbol, check it here.
464 This has the disadvantage that it may be too late... */
465 if (current_function_limit_stack)
467 if (REG_P (stack_limit_rtx))
469 #if defined (MOTOROLA)
470 asm_fprintf (stream, "\tcmp.l %s,%Rsp\n\ttrapcs\n",
471 reg_names[REGNO (stack_limit_rtx)]);
473 asm_fprintf (stream, "\tcmpl %s,%Rsp\n\ttrapcs\n",
474 reg_names[REGNO (stack_limit_rtx)]);
477 else if (GET_CODE (stack_limit_rtx) != SYMBOL_REF)
478 warning ("stack limit expression is not supported");
481 if (num_saved_regs <= 2)
483 /* Store each separately in the same order moveml uses.
484 Using two movel instructions instead of a single moveml
485 is about 15% faster for the 68020 and 68030 at no expense
490 /* Undo the work from above. */
491 for (i = 0; i< 16; i++)
496 "\t%Omove.l %s,-(%Rsp)\n",
498 "\tmovel %s,%Rsp@-\n",
501 if (dwarf2out_do_frame ())
503 char *l = (char *) dwarf2out_cfi_label ();
505 cfa_store_offset += 4;
506 if (! frame_pointer_needed)
508 cfa_offset = cfa_store_offset;
509 dwarf2out_def_cfa (l, STACK_POINTER_REGNUM, cfa_offset);
511 dwarf2out_reg_save (l, 15 - i, -cfa_store_offset);
519 /* The coldfire does not support the predecrement form of the
520 movml instruction, so we must adjust the stack pointer and
521 then use the plain address register indirect mode. We also
522 have to invert the register save mask to use the new mode.
524 FIXME: if num_saved_regs was calculated earlier, we could
525 combine the stack pointer adjustment with any adjustment
526 done when the initial stack frame is created. This would
527 save an instruction */
532 for (i = 0; i < 16; i++)
534 newmask |= (1 << (15-i));
537 asm_fprintf (stream, "\tlea (%d,%Rsp),%Rsp\n", -num_saved_regs*4);
538 asm_fprintf (stream, "\tmovm.l %I0x%x,(%Rsp)\n", newmask);
540 asm_fprintf (stream, "\tlea %Rsp@(%d),%Rsp\n", -num_saved_regs*4);
541 asm_fprintf (stream, "\tmoveml %I0x%x,%Rsp@\n", newmask);
547 asm_fprintf (stream, "\tmovm.l %I0x%x,-(%Rsp)\n", mask);
549 asm_fprintf (stream, "\tmoveml %I0x%x,%Rsp@-\n", mask);
552 if (dwarf2out_do_frame ())
554 char *l = (char *) dwarf2out_cfi_label ();
557 cfa_store_offset += num_saved_regs * 4;
558 if (! frame_pointer_needed)
560 cfa_offset = cfa_store_offset;
561 dwarf2out_def_cfa (l, STACK_POINTER_REGNUM, cfa_offset);
563 for (regno = 0, n_regs = 0; regno < 16; regno++)
564 if (mask & (1 << (15 - regno)))
565 dwarf2out_reg_save (l, regno,
566 -cfa_store_offset + n_regs++ * 4);
569 if (flag_pic && current_function_uses_pic_offset_table)
572 asm_fprintf (stream, "\t%Olea (%Rpc, %U_GLOBAL_OFFSET_TABLE_@GOTPC), %s\n",
573 reg_names[PIC_OFFSET_TABLE_REGNUM]);
575 asm_fprintf (stream, "\tmovel %I%U_GLOBAL_OFFSET_TABLE_, %s\n",
576 reg_names[PIC_OFFSET_TABLE_REGNUM]);
577 asm_fprintf (stream, "\tlea %Rpc@(0,%s:l),%s\n",
578 reg_names[PIC_OFFSET_TABLE_REGNUM],
579 reg_names[PIC_OFFSET_TABLE_REGNUM]);
584 /* Return true if this function's epilogue can be output as RTL. */
591 if (!reload_completed || frame_pointer_needed || get_frame_size () != 0)
594 for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
595 if (m68k_save_reg (regno))
601 /* This function generates the assembly code for function exit,
602 on machines that need it.
604 The function epilogue should not depend on the current stack pointer!
605 It should use the frame pointer only, if there is a frame pointer.
606 This is mandatory because of alloca; we also take advantage of it to
607 omit stack adjustments before returning. */
610 m68k_output_function_epilogue (stream, size)
615 register int mask, fmask;
617 HOST_WIDE_INT offset, foffset;
618 HOST_WIDE_INT fsize = (size + 3) & -4;
620 rtx insn = get_last_insn ();
621 int restore_from_sp = 0;
623 /* If the last insn was a BARRIER, we don't have to write any code. */
624 if (GET_CODE (insn) == NOTE)
625 insn = prev_nonnote_insn (insn);
626 if (insn && GET_CODE (insn) == BARRIER)
628 /* Output just a no-op so that debuggers don't get confused
629 about which function the pc is in at this address. */
630 fprintf (stream, "\tnop\n");
634 #ifdef FUNCTION_EXTRA_EPILOGUE
635 FUNCTION_EXTRA_EPILOGUE (stream, size);
637 nregs = 0; fmask = 0;
640 for (regno = 16; regno < 24; regno++)
641 if (m68k_save_reg (regno))
644 fmask |= 1 << (23 - regno);
647 foffset = nregs * 12;
649 for (regno = 0; regno < 16; regno++)
650 if (m68k_save_reg (regno))
655 offset = foffset + nregs * 4;
656 /* FIXME : leaf_function_p below is too strong.
657 What we really need to know there is if there could be pending
658 stack adjustment needed at that point. */
659 restore_from_sp = ! frame_pointer_needed
660 || (! current_function_calls_alloca && leaf_function_p ());
661 if (offset + fsize >= 0x8000
666 asm_fprintf (stream, "\t%Omove.l %I%wd,%Ra1\n", -fsize);
668 asm_fprintf (stream, "\tmovel %I%wd,%Ra1\n", -fsize);
672 if (TARGET_5200 || nregs <= 2)
674 /* Restore each separately in the same order moveml does.
675 Using two movel instructions instead of a single moveml
676 is about 15% faster for the 68020 and 68030 at no expense
681 /* Undo the work from above. */
682 for (i = 0; i< 16; i++)
688 asm_fprintf (stream, "\t%Omove.l -%wd(%s,%Ra1.l),%s\n",
690 reg_names[FRAME_POINTER_REGNUM],
693 asm_fprintf (stream, "\tmovel %s@(-%wd,%Ra1:l),%s\n",
694 reg_names[FRAME_POINTER_REGNUM],
695 offset + fsize, reg_names[i]);
698 else if (restore_from_sp)
701 asm_fprintf (stream, "\t%Omove.l (%Rsp)+,%s\n",
704 asm_fprintf (stream, "\tmovel %Rsp@+,%s\n",
711 asm_fprintf (stream, "\t%Omove.l -%wd(%s),%s\n",
713 reg_names[FRAME_POINTER_REGNUM],
716 asm_fprintf (stream, "\tmovel %s@(-%wd),%s\n",
717 reg_names[FRAME_POINTER_REGNUM],
718 offset + fsize, reg_names[i]);
729 asm_fprintf (stream, "\tmovm.l -%wd(%s,%Ra1.l),%I0x%x\n",
731 reg_names[FRAME_POINTER_REGNUM],
734 asm_fprintf (stream, "\tmoveml %s@(-%wd,%Ra1:l),%I0x%x\n",
735 reg_names[FRAME_POINTER_REGNUM],
736 offset + fsize, mask);
739 else if (restore_from_sp)
742 asm_fprintf (stream, "\tmovm.l (%Rsp)+,%I0x%x\n", mask);
744 asm_fprintf (stream, "\tmoveml %Rsp@+,%I0x%x\n", mask);
750 asm_fprintf (stream, "\tmovm.l -%wd(%s),%I0x%x\n",
752 reg_names[FRAME_POINTER_REGNUM],
755 asm_fprintf (stream, "\tmoveml %s@(-%wd),%I0x%x\n",
756 reg_names[FRAME_POINTER_REGNUM],
757 offset + fsize, mask);
766 asm_fprintf (stream, "\tfmovm -%wd(%s,%Ra1.l),%I0x%x\n",
768 reg_names[FRAME_POINTER_REGNUM],
771 asm_fprintf (stream, "\tfmovem %s@(-%wd,%Ra1:l),%I0x%x\n",
772 reg_names[FRAME_POINTER_REGNUM],
773 foffset + fsize, fmask);
776 else if (restore_from_sp)
779 asm_fprintf (stream, "\tfmovm (%Rsp)+,%I0x%x\n", fmask);
781 asm_fprintf (stream, "\tfmovem %Rsp@+,%I0x%x\n", fmask);
787 asm_fprintf (stream, "\tfmovm -%wd(%s),%I0x%x\n",
789 reg_names[FRAME_POINTER_REGNUM],
792 asm_fprintf (stream, "\tfmovem %s@(-%wd),%I0x%x\n",
793 reg_names[FRAME_POINTER_REGNUM],
794 foffset + fsize, fmask);
798 if (frame_pointer_needed)
799 fprintf (stream, "\tunlk %s\n",
800 reg_names[FRAME_POINTER_REGNUM]);
809 asm_fprintf (stream, "\taddq.w %I%wd,%Rsp\n", fsize + 4);
811 asm_fprintf (stream, "\taddqw %I%wd,%Rsp\n", fsize + 4);
817 asm_fprintf (stream, "\taddq.l %I%wd,%Rsp\n", fsize + 4);
819 asm_fprintf (stream, "\taddql %I%wd,%Rsp\n", fsize + 4);
823 else if (fsize + 4 <= 16 && TARGET_CPU32)
825 /* On the CPU32 it is faster to use two addqw instructions to
826 add a small integer (8 < N <= 16) to a register. */
827 /* asm_fprintf() cannot handle %. */
829 asm_fprintf (stream, "\taddq.w %I8,%Rsp\n\taddq.w %I%wd,%Rsp\n",
832 asm_fprintf (stream, "\taddqw %I8,%Rsp\n\taddqw %I%wd,%Rsp\n",
837 #endif /* not NO_ADDSUB_Q */
838 if (fsize + 4 < 0x8000)
842 /* asm_fprintf() cannot handle %. */
844 asm_fprintf (stream, "\tadd.w %I%wd,%Rsp\n", fsize + 4);
846 asm_fprintf (stream, "\taddw %I%wd,%Rsp\n", fsize + 4);
852 asm_fprintf (stream, "\tlea (%wd,%Rsp),%Rsp\n", fsize + 4);
854 asm_fprintf (stream, "\tlea %Rsp@(%wd),%Rsp\n", fsize + 4);
860 /* asm_fprintf() cannot handle %. */
862 asm_fprintf (stream, "\tadd.l %I%wd,%Rsp\n", fsize + 4);
864 asm_fprintf (stream, "\taddl %I%wd,%Rsp\n", fsize + 4);
868 if (current_function_calls_eh_return)
871 asm_fprintf (stream, "\tadd.l %Ra0,%Rsp\n");
873 asm_fprintf (stream, "\taddl %Ra0,%Rsp\n");
876 if (current_function_pops_args)
877 asm_fprintf (stream, "\trtd %I%d\n", current_function_pops_args);
879 fprintf (stream, "\trts\n");
882 /* Similar to general_operand, but exclude stack_pointer_rtx. */
885 not_sp_operand (op, mode)
887 enum machine_mode mode;
889 return op != stack_pointer_rtx && nonimmediate_operand (op, mode);
892 /* Return TRUE if X is a valid comparison operator for the dbcc
895 Note it rejects floating point comparison operators.
896 (In the future we could use Fdbcc).
898 It also rejects some comparisons when CC_NO_OVERFLOW is set. */
901 valid_dbcc_comparison_p (x, mode)
903 enum machine_mode mode ATTRIBUTE_UNUSED;
905 switch (GET_CODE (x))
907 case EQ: case NE: case GTU: case LTU:
911 /* Reject some when CC_NO_OVERFLOW is set. This may be over
913 case GT: case LT: case GE: case LE:
914 return ! (cc_prev_status.flags & CC_NO_OVERFLOW);
920 /* Return nonzero if flags are currently in the 68881 flag register. */
924 /* We could add support for these in the future */
925 return cc_status.flags & CC_IN_68881;
928 /* Output a dbCC; jCC sequence. Note we do not handle the
929 floating point version of this sequence (Fdbcc). We also
930 do not handle alternative conditions when CC_NO_OVERFLOW is
931 set. It is assumed that valid_dbcc_comparison_p and flags_in_68881 will
932 kick those out before we get here. */
935 output_dbcc_and_branch (operands)
938 switch (GET_CODE (operands[3]))
942 output_asm_insn ("dbeq %0,%l1\n\tjbeq %l2", operands);
944 output_asm_insn ("dbeq %0,%l1\n\tjeq %l2", operands);
950 output_asm_insn ("dbne %0,%l1\n\tjbne %l2", operands);
952 output_asm_insn ("dbne %0,%l1\n\tjne %l2", operands);
958 output_asm_insn ("dbgt %0,%l1\n\tjbgt %l2", operands);
960 output_asm_insn ("dbgt %0,%l1\n\tjgt %l2", operands);
966 output_asm_insn ("dbhi %0,%l1\n\tjbhi %l2", operands);
968 output_asm_insn ("dbhi %0,%l1\n\tjhi %l2", operands);
974 output_asm_insn ("dblt %0,%l1\n\tjblt %l2", operands);
976 output_asm_insn ("dblt %0,%l1\n\tjlt %l2", operands);
982 output_asm_insn ("dbcs %0,%l1\n\tjbcs %l2", operands);
984 output_asm_insn ("dbcs %0,%l1\n\tjcs %l2", operands);
990 output_asm_insn ("dbge %0,%l1\n\tjbge %l2", operands);
992 output_asm_insn ("dbge %0,%l1\n\tjge %l2", operands);
998 output_asm_insn ("dbcc %0,%l1\n\tjbcc %l2", operands);
1000 output_asm_insn ("dbcc %0,%l1\n\tjcc %l2", operands);
1006 output_asm_insn ("dble %0,%l1\n\tjble %l2", operands);
1008 output_asm_insn ("dble %0,%l1\n\tjle %l2", operands);
1014 output_asm_insn ("dbls %0,%l1\n\tjbls %l2", operands);
1016 output_asm_insn ("dbls %0,%l1\n\tjls %l2", operands);
1024 /* If the decrement is to be done in SImode, then we have
1025 to compensate for the fact that dbcc decrements in HImode. */
1026 switch (GET_MODE (operands[0]))
1030 output_asm_insn ("clr%.w %0\n\tsubq%.l %#1,%0\n\tjbpl %l1", operands);
1032 output_asm_insn ("clr%.w %0\n\tsubq%.l %#1,%0\n\tjpl %l1", operands);
1045 output_scc_di(op, operand1, operand2, dest)
1052 enum rtx_code op_code = GET_CODE (op);
1054 /* This does not produce a useful cc. */
1057 /* The m68k cmp.l instruction requires operand1 to be a reg as used
1058 below. Swap the operands and change the op if these requirements
1059 are not fulfilled. */
1060 if (GET_CODE (operand2) == REG && GET_CODE (operand1) != REG)
1064 operand1 = operand2;
1066 op_code = swap_condition (op_code);
1068 loperands[0] = operand1;
1069 if (GET_CODE (operand1) == REG)
1070 loperands[1] = gen_rtx_REG (SImode, REGNO (operand1) + 1);
1072 loperands[1] = adjust_address (operand1, SImode, 4);
1073 if (operand2 != const0_rtx)
1075 loperands[2] = operand2;
1076 if (GET_CODE (operand2) == REG)
1077 loperands[3] = gen_rtx_REG (SImode, REGNO (operand2) + 1);
1079 loperands[3] = adjust_address (operand2, SImode, 4);
1081 loperands[4] = gen_label_rtx();
1082 if (operand2 != const0_rtx)
1085 #ifdef SGS_CMP_ORDER
1086 output_asm_insn ("cmp%.l %0,%2\n\tjbne %l4\n\tcmp%.l %1,%3", loperands);
1088 output_asm_insn ("cmp%.l %2,%0\n\tjbne %l4\n\tcmp%.l %3,%1", loperands);
1091 #ifdef SGS_CMP_ORDER
1092 output_asm_insn ("cmp%.l %0,%2\n\tjne %l4\n\tcmp%.l %1,%3", loperands);
1094 output_asm_insn ("cmp%.l %2,%0\n\tjne %l4\n\tcmp%.l %3,%1", loperands);
1100 if (TARGET_68020 || TARGET_5200 || ! ADDRESS_REG_P (loperands[0]))
1101 output_asm_insn ("tst%.l %0", loperands);
1104 #ifdef SGS_CMP_ORDER
1105 output_asm_insn ("cmp%.w %0,%#0", loperands);
1107 output_asm_insn ("cmp%.w %#0,%0", loperands);
1112 output_asm_insn ("jbne %l4", loperands);
1114 output_asm_insn ("jne %l4", loperands);
1117 if (TARGET_68020 || TARGET_5200 || ! ADDRESS_REG_P (loperands[1]))
1118 output_asm_insn ("tst%.l %1", loperands);
1121 #ifdef SGS_CMP_ORDER
1122 output_asm_insn ("cmp%.w %1,%#0", loperands);
1124 output_asm_insn ("cmp%.w %#0,%1", loperands);
1129 loperands[5] = dest;
1134 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1135 CODE_LABEL_NUMBER (loperands[4]));
1136 output_asm_insn ("seq %5", loperands);
1140 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1141 CODE_LABEL_NUMBER (loperands[4]));
1142 output_asm_insn ("sne %5", loperands);
1146 loperands[6] = gen_label_rtx();
1148 output_asm_insn ("shi %5\n\tjbra %l6", loperands);
1150 output_asm_insn ("shi %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 ("sgt %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 ("shi %5", loperands);
1166 loperands[6] = gen_label_rtx();
1168 output_asm_insn ("scs %5\n\tjbra %l6", loperands);
1170 output_asm_insn ("scs %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 ("slt %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 ("scs %5", loperands);
1186 loperands[6] = gen_label_rtx();
1188 output_asm_insn ("scc %5\n\tjbra %l6", loperands);
1190 output_asm_insn ("scc %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 ("sge %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 ("scc %5", loperands);
1206 loperands[6] = gen_label_rtx();
1208 output_asm_insn ("sls %5\n\tjbra %l6", loperands);
1210 output_asm_insn ("sls %5\n\tjra %l6", loperands);
1212 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1213 CODE_LABEL_NUMBER (loperands[4]));
1214 output_asm_insn ("sle %5", loperands);
1215 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1216 CODE_LABEL_NUMBER (loperands[6]));
1220 (*targetm.asm_out.internal_label) (asm_out_file, "L",
1221 CODE_LABEL_NUMBER (loperands[4]));
1222 output_asm_insn ("sls %5", loperands);
1232 output_btst (operands, countop, dataop, insn, signpos)
1234 rtx countop, dataop;
1238 operands[0] = countop;
1239 operands[1] = dataop;
1241 if (GET_CODE (countop) == CONST_INT)
1243 register int count = INTVAL (countop);
1244 /* If COUNT is bigger than size of storage unit in use,
1245 advance to the containing unit of same size. */
1246 if (count > signpos)
1248 int offset = (count & ~signpos) / 8;
1249 count = count & signpos;
1250 operands[1] = dataop = adjust_address (dataop, QImode, offset);
1252 if (count == signpos)
1253 cc_status.flags = CC_NOT_POSITIVE | CC_Z_IN_NOT_N;
1255 cc_status.flags = CC_NOT_NEGATIVE | CC_Z_IN_NOT_N;
1257 /* These three statements used to use next_insns_test_no...
1258 but it appears that this should do the same job. */
1260 && next_insn_tests_no_inequality (insn))
1263 && next_insn_tests_no_inequality (insn))
1266 && next_insn_tests_no_inequality (insn))
1269 cc_status.flags = CC_NOT_NEGATIVE;
1271 return "btst %0,%1";
1274 /* Returns 1 if OP is either a symbol reference or a sum of a symbol
1275 reference and a constant. */
1278 symbolic_operand (op, mode)
1280 enum machine_mode mode ATTRIBUTE_UNUSED;
1282 switch (GET_CODE (op))
1290 return ((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
1291 || GET_CODE (XEXP (op, 0)) == LABEL_REF)
1292 && GET_CODE (XEXP (op, 1)) == CONST_INT);
1294 #if 0 /* Deleted, with corresponding change in m68k.h,
1295 so as to fit the specs. No CONST_DOUBLE is ever symbolic. */
1297 return GET_MODE (op) == mode;
1305 /* Check for sign_extend or zero_extend. Used for bit-count operands. */
1308 extend_operator(x, mode)
1310 enum machine_mode mode;
1312 if (mode != VOIDmode && GET_MODE(x) != mode)
1314 switch (GET_CODE(x))
1325 /* Legitimize PIC addresses. If the address is already
1326 position-independent, we return ORIG. Newly generated
1327 position-independent addresses go to REG. If we need more
1328 than one register, we lose.
1330 An address is legitimized by making an indirect reference
1331 through the Global Offset Table with the name of the symbol
1334 The assembler and linker are responsible for placing the
1335 address of the symbol in the GOT. The function prologue
1336 is responsible for initializing a5 to the starting address
1339 The assembler is also responsible for translating a symbol name
1340 into a constant displacement from the start of the GOT.
1342 A quick example may make things a little clearer:
1344 When not generating PIC code to store the value 12345 into _foo
1345 we would generate the following code:
1349 When generating PIC two transformations are made. First, the compiler
1350 loads the address of foo into a register. So the first transformation makes:
1355 The code in movsi will intercept the lea instruction and call this
1356 routine which will transform the instructions into:
1358 movel a5@(_foo:w), a0
1362 That (in a nutshell) is how *all* symbol and label references are
1366 legitimize_pic_address (orig, mode, reg)
1368 enum machine_mode mode ATTRIBUTE_UNUSED;
1372 /* First handle a simple SYMBOL_REF or LABEL_REF */
1373 if (GET_CODE (orig) == SYMBOL_REF || GET_CODE (orig) == LABEL_REF)
1378 pic_ref = gen_rtx_MEM (Pmode,
1379 gen_rtx_PLUS (Pmode,
1380 pic_offset_table_rtx, orig));
1381 current_function_uses_pic_offset_table = 1;
1382 RTX_UNCHANGING_P (pic_ref) = 1;
1383 emit_move_insn (reg, pic_ref);
1386 else if (GET_CODE (orig) == CONST)
1390 /* Make sure this is CONST has not already been legitimized */
1391 if (GET_CODE (XEXP (orig, 0)) == PLUS
1392 && XEXP (XEXP (orig, 0), 0) == pic_offset_table_rtx)
1398 /* legitimize both operands of the PLUS */
1399 if (GET_CODE (XEXP (orig, 0)) == PLUS)
1401 base = legitimize_pic_address (XEXP (XEXP (orig, 0), 0), Pmode, reg);
1402 orig = legitimize_pic_address (XEXP (XEXP (orig, 0), 1), Pmode,
1403 base == reg ? 0 : reg);
1407 if (GET_CODE (orig) == CONST_INT)
1408 return plus_constant (base, INTVAL (orig));
1409 pic_ref = gen_rtx_PLUS (Pmode, base, orig);
1410 /* Likewise, should we set special REG_NOTEs here? */
1416 typedef enum { MOVL, SWAP, NEGW, NOTW, NOTB, MOVQ } CONST_METHOD;
1418 static CONST_METHOD const_method PARAMS ((rtx));
1420 #define USE_MOVQ(i) ((unsigned)((i) + 128) <= 255)
1423 const_method (constant)
1429 i = INTVAL (constant);
1433 /* The Coldfire doesn't have byte or word operations. */
1434 /* FIXME: This may not be useful for the m68060 either */
1437 /* if -256 < N < 256 but N is not in range for a moveq
1438 N^ff will be, so use moveq #N^ff, dreg; not.b dreg. */
1439 if (USE_MOVQ (i ^ 0xff))
1441 /* Likewise, try with not.w */
1442 if (USE_MOVQ (i ^ 0xffff))
1444 /* This is the only value where neg.w is useful */
1447 /* Try also with swap */
1449 if (USE_MOVQ ((u >> 16) | (u << 16)))
1452 /* Otherwise, use move.l */
1457 const_int_cost (constant)
1460 switch (const_method (constant))
1463 /* Constants between -128 and 127 are cheap due to moveq */
1469 /* Constants easily generated by moveq + not.b/not.w/neg.w/swap */
1479 m68k_rtx_costs (x, code, outer_code, total)
1481 int code, outer_code;
1487 /* Constant zero is super cheap due to clr instruction. */
1488 if (x == const0_rtx)
1491 *total = const_int_cost (x);
1501 /* Make 0.0 cheaper than other floating constants to
1502 encourage creating tstsf and tstdf insns. */
1503 if (outer_code == COMPARE
1504 && (x == CONST0_RTX (SFmode) || x == CONST0_RTX (DFmode)))
1510 /* These are vaguely right for a 68020. */
1511 /* The costs for long multiply have been adjusted to work properly
1512 in synth_mult on the 68020, relative to an average of the time
1513 for add and the time for shift, taking away a little more because
1514 sometimes move insns are needed. */
1515 /* div?.w is relatively cheaper on 68000 counted in COSTS_N_INSNS terms. */
1516 #define MULL_COST (TARGET_68060 ? 2 : TARGET_68040 ? 5 : 13)
1517 #define MULW_COST (TARGET_68060 ? 2 : TARGET_68040 ? 3 : TARGET_68020 ? 8 : 5)
1518 #define DIVW_COST (TARGET_68020 ? 27 : 12)
1521 /* An lea costs about three times as much as a simple add. */
1522 if (GET_MODE (x) == SImode
1523 && GET_CODE (XEXP (x, 1)) == REG
1524 && GET_CODE (XEXP (x, 0)) == MULT
1525 && GET_CODE (XEXP (XEXP (x, 0), 0)) == REG
1526 && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT
1527 && (INTVAL (XEXP (XEXP (x, 0), 1)) == 2
1528 || INTVAL (XEXP (XEXP (x, 0), 1)) == 4
1529 || INTVAL (XEXP (XEXP (x, 0), 1)) == 8))
1530 *total = COSTS_N_INSNS (3); /* lea an@(dx:l:i),am */
1538 *total = COSTS_N_INSNS(1);
1543 if (GET_CODE (XEXP (x, 1)) == CONST_INT)
1545 if (INTVAL (XEXP (x, 1)) < 16)
1546 *total = COSTS_N_INSNS (2) + INTVAL (XEXP (x, 1)) / 2;
1548 /* We're using clrw + swap for these cases. */
1549 *total = COSTS_N_INSNS (4) + (INTVAL (XEXP (x, 1)) - 16) / 2;
1552 *total = COSTS_N_INSNS (10); /* worst case */
1555 /* A shift by a big integer takes an extra instruction. */
1556 if (GET_CODE (XEXP (x, 1)) == CONST_INT
1557 && (INTVAL (XEXP (x, 1)) == 16))
1559 *total = COSTS_N_INSNS (2); /* clrw;swap */
1562 if (GET_CODE (XEXP (x, 1)) == CONST_INT
1563 && !(INTVAL (XEXP (x, 1)) > 0
1564 && INTVAL (XEXP (x, 1)) <= 8))
1566 *total = COSTS_N_INSNS (3); /* lsr #i,dn */
1572 if ((GET_CODE (XEXP (x, 0)) == ZERO_EXTEND
1573 || GET_CODE (XEXP (x, 0)) == SIGN_EXTEND)
1574 && GET_MODE (x) == SImode)
1575 *total = COSTS_N_INSNS (MULW_COST);
1576 else if (GET_MODE (x) == QImode || GET_MODE (x) == HImode)
1577 *total = COSTS_N_INSNS (MULW_COST);
1579 *total = COSTS_N_INSNS (MULL_COST);
1586 if (GET_MODE (x) == QImode || GET_MODE (x) == HImode)
1587 *total = COSTS_N_INSNS (DIVW_COST); /* div.w */
1589 *total = COSTS_N_INSNS (43); /* div.l */
1598 output_move_const_into_data_reg (operands)
1603 i = INTVAL (operands[1]);
1604 switch (const_method (operands[1]))
1607 #if defined (MOTOROLA)
1608 return "moveq%.l %1,%0";
1610 return "moveq %1,%0";
1613 operands[1] = GEN_INT (i ^ 0xff);
1614 #if defined (MOTOROLA)
1615 return "moveq%.l %1,%0\n\tnot%.b %0";
1617 return "moveq %1,%0\n\tnot%.b %0";
1620 operands[1] = GEN_INT (i ^ 0xffff);
1621 #if defined (MOTOROLA)
1622 return "moveq%.l %1,%0\n\tnot%.w %0";
1624 return "moveq %1,%0\n\tnot%.w %0";
1627 #if defined (MOTOROLA)
1628 return "moveq%.l %#-128,%0\n\tneg%.w %0";
1630 return "moveq %#-128,%0\n\tneg%.w %0";
1636 operands[1] = GEN_INT ((u << 16) | (u >> 16));
1637 #if defined (MOTOROLA)
1638 return "moveq%.l %1,%0\n\tswap %0";
1640 return "moveq %1,%0\n\tswap %0";
1644 return "move%.l %1,%0";
1651 output_move_simode_const (operands)
1654 if (operands[1] == const0_rtx
1655 && (DATA_REG_P (operands[0])
1656 || GET_CODE (operands[0]) == MEM)
1657 /* clr insns on 68000 read before writing.
1658 This isn't so on the 68010, but we have no TARGET_68010. */
1659 && ((TARGET_68020 || TARGET_5200)
1660 || !(GET_CODE (operands[0]) == MEM
1661 && MEM_VOLATILE_P (operands[0]))))
1663 else if (operands[1] == const0_rtx
1664 && ADDRESS_REG_P (operands[0]))
1665 return "sub%.l %0,%0";
1666 else if (DATA_REG_P (operands[0]))
1667 return output_move_const_into_data_reg (operands);
1668 else if (ADDRESS_REG_P (operands[0])
1669 && INTVAL (operands[1]) < 0x8000
1670 && INTVAL (operands[1]) >= -0x8000)
1671 return "move%.w %1,%0";
1672 else if (GET_CODE (operands[0]) == MEM
1673 && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
1674 && REGNO (XEXP (XEXP (operands[0], 0), 0)) == STACK_POINTER_REGNUM
1675 && INTVAL (operands[1]) < 0x8000
1676 && INTVAL (operands[1]) >= -0x8000)
1678 return "move%.l %1,%0";
1682 output_move_simode (operands)
1685 if (GET_CODE (operands[1]) == CONST_INT)
1686 return output_move_simode_const (operands);
1687 else if ((GET_CODE (operands[1]) == SYMBOL_REF
1688 || GET_CODE (operands[1]) == CONST)
1689 && push_operand (operands[0], SImode))
1691 else if ((GET_CODE (operands[1]) == SYMBOL_REF
1692 || GET_CODE (operands[1]) == CONST)
1693 && ADDRESS_REG_P (operands[0]))
1694 return "lea %a1,%0";
1695 return "move%.l %1,%0";
1699 output_move_himode (operands)
1702 if (GET_CODE (operands[1]) == CONST_INT)
1704 if (operands[1] == const0_rtx
1705 && (DATA_REG_P (operands[0])
1706 || GET_CODE (operands[0]) == MEM)
1707 /* clr insns on 68000 read before writing.
1708 This isn't so on the 68010, but we have no TARGET_68010. */
1709 && ((TARGET_68020 || TARGET_5200)
1710 || !(GET_CODE (operands[0]) == MEM
1711 && MEM_VOLATILE_P (operands[0]))))
1713 else if (operands[1] == const0_rtx
1714 && ADDRESS_REG_P (operands[0]))
1715 return "sub%.l %0,%0";
1716 else if (DATA_REG_P (operands[0])
1717 && INTVAL (operands[1]) < 128
1718 && INTVAL (operands[1]) >= -128)
1720 #if defined(MOTOROLA)
1721 return "moveq%.l %1,%0";
1723 return "moveq %1,%0";
1726 else if (INTVAL (operands[1]) < 0x8000
1727 && INTVAL (operands[1]) >= -0x8000)
1728 return "move%.w %1,%0";
1730 else if (CONSTANT_P (operands[1]))
1731 return "move%.l %1,%0";
1733 /* Recognize the insn before a tablejump, one that refers
1734 to a table of offsets. Such an insn will need to refer
1735 to a label on the insn. So output one. Use the label-number
1736 of the table of offsets to generate this label. This code,
1737 and similar code below, assumes that there will be at most one
1738 reference to each table. */
1739 if (GET_CODE (operands[1]) == MEM
1740 && GET_CODE (XEXP (operands[1], 0)) == PLUS
1741 && GET_CODE (XEXP (XEXP (operands[1], 0), 1)) == LABEL_REF
1742 && GET_CODE (XEXP (XEXP (operands[1], 0), 0)) != PLUS)
1744 rtx labelref = XEXP (XEXP (operands[1], 0), 1);
1745 #if defined (MOTOROLA) && !defined (SGS_SWITCH_TABLES)
1747 asm_fprintf (asm_out_file, "\tset %LLI%d,.+2\n",
1748 CODE_LABEL_NUMBER (XEXP (labelref, 0)));
1750 asm_fprintf (asm_out_file, "\t.set %LLI%d,.+2\n",
1751 CODE_LABEL_NUMBER (XEXP (labelref, 0)));
1752 #endif /* not SGS */
1753 #else /* SGS_SWITCH_TABLES or not MOTOROLA */
1754 (*targetm.asm_out.internal_label) (asm_out_file, "LI",
1755 CODE_LABEL_NUMBER (XEXP (labelref, 0)));
1756 #ifdef SGS_SWITCH_TABLES
1757 /* Set flag saying we need to define the symbol
1758 LD%n (with value L%n-LI%n) at the end of the switch table. */
1759 switch_table_difference_label_flag = 1;
1760 #endif /* SGS_SWITCH_TABLES */
1761 #endif /* SGS_SWITCH_TABLES or not MOTOROLA */
1763 #endif /* SGS_NO_LI */
1764 return "move%.w %1,%0";
1768 output_move_qimode (operands)
1773 /* This is probably useless, since it loses for pushing a struct
1774 of several bytes a byte at a time. */
1775 /* 68k family always modifies the stack pointer by at least 2, even for
1776 byte pushes. The 5200 (coldfire) does not do this. */
1777 if (GET_CODE (operands[0]) == MEM
1778 && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
1779 && XEXP (XEXP (operands[0], 0), 0) == stack_pointer_rtx
1780 && ! ADDRESS_REG_P (operands[1])
1783 xoperands[1] = operands[1];
1785 = gen_rtx_MEM (QImode,
1786 gen_rtx_PLUS (VOIDmode, stack_pointer_rtx, const1_rtx));
1787 /* Just pushing a byte puts it in the high byte of the halfword. */
1788 /* We must put it in the low-order, high-numbered byte. */
1789 if (!reg_mentioned_p (stack_pointer_rtx, operands[1]))
1791 xoperands[3] = stack_pointer_rtx;
1793 output_asm_insn ("subq%.l %#2,%3\n\tmove%.b %1,%2", xoperands);
1795 output_asm_insn ("sub%.l %#2,%3\n\tmove%.b %1,%2", xoperands);
1799 output_asm_insn ("move%.b %1,%-\n\tmove%.b %@,%2", xoperands);
1803 /* clr and st insns on 68000 read before writing.
1804 This isn't so on the 68010, but we have no TARGET_68010. */
1805 if (!ADDRESS_REG_P (operands[0])
1806 && ((TARGET_68020 || TARGET_5200)
1807 || !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0]))))
1809 if (operands[1] == const0_rtx)
1811 if ((!TARGET_5200 || DATA_REG_P (operands[0]))
1812 && GET_CODE (operands[1]) == CONST_INT
1813 && (INTVAL (operands[1]) & 255) == 255)
1819 if (GET_CODE (operands[1]) == CONST_INT
1820 && DATA_REG_P (operands[0])
1821 && INTVAL (operands[1]) < 128
1822 && INTVAL (operands[1]) >= -128)
1824 #if defined(MOTOROLA)
1825 return "moveq%.l %1,%0";
1827 return "moveq %1,%0";
1830 if (operands[1] == const0_rtx && ADDRESS_REG_P (operands[0]))
1831 return "sub%.l %0,%0";
1832 if (GET_CODE (operands[1]) != CONST_INT && CONSTANT_P (operands[1]))
1833 return "move%.l %1,%0";
1834 /* 68k family (including the 5200 coldfire) does not support byte moves to
1835 from address registers. */
1836 if (ADDRESS_REG_P (operands[0]) || ADDRESS_REG_P (operands[1]))
1837 return "move%.w %1,%0";
1838 return "move%.b %1,%0";
1842 output_move_stricthi (operands)
1845 if (operands[1] == const0_rtx
1846 /* clr insns on 68000 read before writing.
1847 This isn't so on the 68010, but we have no TARGET_68010. */
1848 && ((TARGET_68020 || TARGET_5200)
1849 || !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0]))))
1851 return "move%.w %1,%0";
1855 output_move_strictqi (operands)
1858 if (operands[1] == const0_rtx
1859 /* clr insns on 68000 read before writing.
1860 This isn't so on the 68010, but we have no TARGET_68010. */
1861 && ((TARGET_68020 || TARGET_5200)
1862 || !(GET_CODE (operands[0]) == MEM && MEM_VOLATILE_P (operands[0]))))
1864 return "move%.b %1,%0";
1867 /* Return the best assembler insn template
1868 for moving operands[1] into operands[0] as a fullword. */
1871 singlemove_string (operands)
1874 if (GET_CODE (operands[1]) == CONST_INT)
1875 return output_move_simode_const (operands);
1876 return "move%.l %1,%0";
1880 /* Output assembler code to perform a doubleword move insn
1881 with operands OPERANDS. */
1884 output_move_double (operands)
1889 REGOP, OFFSOP, MEMOP, PUSHOP, POPOP, CNSTOP, RNDOP
1894 rtx addreg0 = 0, addreg1 = 0;
1895 int dest_overlapped_low = 0;
1896 int size = GET_MODE_SIZE (GET_MODE (operands[0]));
1901 /* First classify both operands. */
1903 if (REG_P (operands[0]))
1905 else if (offsettable_memref_p (operands[0]))
1907 else if (GET_CODE (XEXP (operands[0], 0)) == POST_INC)
1909 else if (GET_CODE (XEXP (operands[0], 0)) == PRE_DEC)
1911 else if (GET_CODE (operands[0]) == MEM)
1916 if (REG_P (operands[1]))
1918 else if (CONSTANT_P (operands[1]))
1920 else if (offsettable_memref_p (operands[1]))
1922 else if (GET_CODE (XEXP (operands[1], 0)) == POST_INC)
1924 else if (GET_CODE (XEXP (operands[1], 0)) == PRE_DEC)
1926 else if (GET_CODE (operands[1]) == MEM)
1931 /* Check for the cases that the operand constraints are not
1932 supposed to allow to happen. Abort if we get one,
1933 because generating code for these cases is painful. */
1935 if (optype0 == RNDOP || optype1 == RNDOP)
1938 /* If one operand is decrementing and one is incrementing
1939 decrement the former register explicitly
1940 and change that operand into ordinary indexing. */
1942 if (optype0 == PUSHOP && optype1 == POPOP)
1944 operands[0] = XEXP (XEXP (operands[0], 0), 0);
1946 output_asm_insn ("sub%.l %#12,%0", operands);
1948 output_asm_insn ("subq%.l %#8,%0", operands);
1949 if (GET_MODE (operands[1]) == XFmode)
1950 operands[0] = gen_rtx_MEM (XFmode, operands[0]);
1951 else if (GET_MODE (operands[0]) == DFmode)
1952 operands[0] = gen_rtx_MEM (DFmode, operands[0]);
1954 operands[0] = gen_rtx_MEM (DImode, operands[0]);
1957 if (optype0 == POPOP && optype1 == PUSHOP)
1959 operands[1] = XEXP (XEXP (operands[1], 0), 0);
1961 output_asm_insn ("sub%.l %#12,%1", operands);
1963 output_asm_insn ("subq%.l %#8,%1", operands);
1964 if (GET_MODE (operands[1]) == XFmode)
1965 operands[1] = gen_rtx_MEM (XFmode, operands[1]);
1966 else if (GET_MODE (operands[1]) == DFmode)
1967 operands[1] = gen_rtx_MEM (DFmode, operands[1]);
1969 operands[1] = gen_rtx_MEM (DImode, operands[1]);
1973 /* If an operand is an unoffsettable memory ref, find a register
1974 we can increment temporarily to make it refer to the second word. */
1976 if (optype0 == MEMOP)
1977 addreg0 = find_addr_reg (XEXP (operands[0], 0));
1979 if (optype1 == MEMOP)
1980 addreg1 = find_addr_reg (XEXP (operands[1], 0));
1982 /* Ok, we can do one word at a time.
1983 Normally we do the low-numbered word first,
1984 but if either operand is autodecrementing then we
1985 do the high-numbered word first.
1987 In either case, set up in LATEHALF the operands to use
1988 for the high-numbered word and in some cases alter the
1989 operands in OPERANDS to be suitable for the low-numbered word. */
1993 if (optype0 == REGOP)
1995 latehalf[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 2);
1996 middlehalf[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
1998 else if (optype0 == OFFSOP)
2000 middlehalf[0] = adjust_address (operands[0], SImode, 4);
2001 latehalf[0] = adjust_address (operands[0], SImode, size - 4);
2005 middlehalf[0] = operands[0];
2006 latehalf[0] = operands[0];
2009 if (optype1 == REGOP)
2011 latehalf[1] = gen_rtx_REG (SImode, REGNO (operands[1]) + 2);
2012 middlehalf[1] = gen_rtx_REG (SImode, REGNO (operands[1]) + 1);
2014 else if (optype1 == OFFSOP)
2016 middlehalf[1] = adjust_address (operands[1], SImode, 4);
2017 latehalf[1] = adjust_address (operands[1], SImode, size - 4);
2019 else if (optype1 == CNSTOP)
2021 if (GET_CODE (operands[1]) == CONST_DOUBLE)
2026 REAL_VALUE_FROM_CONST_DOUBLE (r, operands[1]);
2027 REAL_VALUE_TO_TARGET_LONG_DOUBLE (r, l);
2028 operands[1] = GEN_INT (l[0]);
2029 middlehalf[1] = GEN_INT (l[1]);
2030 latehalf[1] = GEN_INT (l[2]);
2032 else if (CONSTANT_P (operands[1]))
2034 /* actually, no non-CONST_DOUBLE constant should ever
2037 if (GET_CODE (operands[1]) == CONST_INT && INTVAL (operands[1]) < 0)
2038 latehalf[1] = constm1_rtx;
2040 latehalf[1] = const0_rtx;
2045 middlehalf[1] = operands[1];
2046 latehalf[1] = operands[1];
2050 /* size is not 12: */
2052 if (optype0 == REGOP)
2053 latehalf[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
2054 else if (optype0 == OFFSOP)
2055 latehalf[0] = adjust_address (operands[0], SImode, size - 4);
2057 latehalf[0] = operands[0];
2059 if (optype1 == REGOP)
2060 latehalf[1] = gen_rtx_REG (SImode, REGNO (operands[1]) + 1);
2061 else if (optype1 == OFFSOP)
2062 latehalf[1] = adjust_address (operands[1], SImode, size - 4);
2063 else if (optype1 == CNSTOP)
2064 split_double (operands[1], &operands[1], &latehalf[1]);
2066 latehalf[1] = operands[1];
2069 /* If insn is effectively movd N(sp),-(sp) then we will do the
2070 high word first. We should use the adjusted operand 1 (which is N+4(sp))
2071 for the low word as well, to compensate for the first decrement of sp. */
2072 if (optype0 == PUSHOP
2073 && REGNO (XEXP (XEXP (operands[0], 0), 0)) == STACK_POINTER_REGNUM
2074 && reg_overlap_mentioned_p (stack_pointer_rtx, operands[1]))
2075 operands[1] = middlehalf[1] = latehalf[1];
2077 /* For (set (reg:DI N) (mem:DI ... (reg:SI N) ...)),
2078 if the upper part of reg N does not appear in the MEM, arrange to
2079 emit the move late-half first. Otherwise, compute the MEM address
2080 into the upper part of N and use that as a pointer to the memory
2082 if (optype0 == REGOP
2083 && (optype1 == OFFSOP || optype1 == MEMOP))
2085 rtx testlow = gen_rtx_REG (SImode, REGNO (operands[0]));
2087 if (reg_overlap_mentioned_p (testlow, XEXP (operands[1], 0))
2088 && reg_overlap_mentioned_p (latehalf[0], XEXP (operands[1], 0)))
2090 /* If both halves of dest are used in the src memory address,
2091 compute the address into latehalf of dest.
2092 Note that this can't happen if the dest is two data regs. */
2094 xops[0] = latehalf[0];
2095 xops[1] = XEXP (operands[1], 0);
2096 output_asm_insn ("lea %a1,%0", xops);
2097 if (GET_MODE (operands[1]) == XFmode )
2099 operands[1] = gen_rtx_MEM (XFmode, latehalf[0]);
2100 middlehalf[1] = adjust_address (operands[1], DImode, size - 8);
2101 latehalf[1] = adjust_address (operands[1], DImode, size - 4);
2105 operands[1] = gen_rtx_MEM (DImode, latehalf[0]);
2106 latehalf[1] = adjust_address (operands[1], DImode, size - 4);
2110 && reg_overlap_mentioned_p (middlehalf[0],
2111 XEXP (operands[1], 0)))
2113 /* Check for two regs used by both source and dest.
2114 Note that this can't happen if the dest is all data regs.
2115 It can happen if the dest is d6, d7, a0.
2116 But in that case, latehalf is an addr reg, so
2117 the code at compadr does ok. */
2119 if (reg_overlap_mentioned_p (testlow, XEXP (operands[1], 0))
2120 || reg_overlap_mentioned_p (latehalf[0], XEXP (operands[1], 0)))
2123 /* JRV says this can't happen: */
2124 if (addreg0 || addreg1)
2127 /* Only the middle reg conflicts; simply put it last. */
2128 output_asm_insn (singlemove_string (operands), operands);
2129 output_asm_insn (singlemove_string (latehalf), latehalf);
2130 output_asm_insn (singlemove_string (middlehalf), middlehalf);
2133 else if (reg_overlap_mentioned_p (testlow, XEXP (operands[1], 0)))
2134 /* If the low half of dest is mentioned in the source memory
2135 address, the arrange to emit the move late half first. */
2136 dest_overlapped_low = 1;
2139 /* If one or both operands autodecrementing,
2140 do the two words, high-numbered first. */
2142 /* Likewise, the first move would clobber the source of the second one,
2143 do them in the other order. This happens only for registers;
2144 such overlap can't happen in memory unless the user explicitly
2145 sets it up, and that is an undefined circumstance. */
2147 if (optype0 == PUSHOP || optype1 == PUSHOP
2148 || (optype0 == REGOP && optype1 == REGOP
2149 && ((middlehalf[1] && REGNO (operands[0]) == REGNO (middlehalf[1]))
2150 || REGNO (operands[0]) == REGNO (latehalf[1])))
2151 || dest_overlapped_low)
2153 /* Make any unoffsettable addresses point at high-numbered word. */
2157 output_asm_insn ("addq%.l %#8,%0", &addreg0);
2159 output_asm_insn ("addq%.l %#4,%0", &addreg0);
2164 output_asm_insn ("addq%.l %#8,%0", &addreg1);
2166 output_asm_insn ("addq%.l %#4,%0", &addreg1);
2170 output_asm_insn (singlemove_string (latehalf), latehalf);
2172 /* Undo the adds we just did. */
2174 output_asm_insn ("subq%.l %#4,%0", &addreg0);
2176 output_asm_insn ("subq%.l %#4,%0", &addreg1);
2180 output_asm_insn (singlemove_string (middlehalf), middlehalf);
2182 output_asm_insn ("subq%.l %#4,%0", &addreg0);
2184 output_asm_insn ("subq%.l %#4,%0", &addreg1);
2187 /* Do low-numbered word. */
2188 return singlemove_string (operands);
2191 /* Normal case: do the two words, low-numbered first. */
2193 output_asm_insn (singlemove_string (operands), operands);
2195 /* Do the middle one of the three words for long double */
2199 output_asm_insn ("addq%.l %#4,%0", &addreg0);
2201 output_asm_insn ("addq%.l %#4,%0", &addreg1);
2203 output_asm_insn (singlemove_string (middlehalf), middlehalf);
2206 /* Make any unoffsettable addresses point at high-numbered word. */
2208 output_asm_insn ("addq%.l %#4,%0", &addreg0);
2210 output_asm_insn ("addq%.l %#4,%0", &addreg1);
2213 output_asm_insn (singlemove_string (latehalf), latehalf);
2215 /* Undo the adds we just did. */
2219 output_asm_insn ("subq%.l %#8,%0", &addreg0);
2221 output_asm_insn ("subq%.l %#4,%0", &addreg0);
2226 output_asm_insn ("subq%.l %#8,%0", &addreg1);
2228 output_asm_insn ("subq%.l %#4,%0", &addreg1);
2234 /* Return a REG that occurs in ADDR with coefficient 1.
2235 ADDR can be effectively incremented by incrementing REG. */
2238 find_addr_reg (addr)
2241 while (GET_CODE (addr) == PLUS)
2243 if (GET_CODE (XEXP (addr, 0)) == REG)
2244 addr = XEXP (addr, 0);
2245 else if (GET_CODE (XEXP (addr, 1)) == REG)
2246 addr = XEXP (addr, 1);
2247 else if (CONSTANT_P (XEXP (addr, 0)))
2248 addr = XEXP (addr, 1);
2249 else if (CONSTANT_P (XEXP (addr, 1)))
2250 addr = XEXP (addr, 0);
2254 if (GET_CODE (addr) == REG)
2259 /* Output assembler code to perform a 32 bit 3 operand add. */
2262 output_addsi3 (operands)
2265 if (! operands_match_p (operands[0], operands[1]))
2267 if (!ADDRESS_REG_P (operands[1]))
2269 rtx tmp = operands[1];
2271 operands[1] = operands[2];
2275 /* These insns can result from reloads to access
2276 stack slots over 64k from the frame pointer. */
2277 if (GET_CODE (operands[2]) == CONST_INT
2278 && INTVAL (operands[2]) + 0x8000 >= (unsigned) 0x10000)
2279 return "move%.l %2,%0\n\tadd%.l %1,%0";
2281 if (GET_CODE (operands[2]) == REG)
2282 return "lea 0(%1,%2.l),%0";
2284 return "lea %c2(%1),%0";
2287 if (GET_CODE (operands[2]) == REG)
2288 return "lea (%1,%2.l),%0";
2290 return "lea (%c2,%1),%0";
2291 #else /* not MOTOROLA (MIT syntax) */
2292 if (GET_CODE (operands[2]) == REG)
2293 return "lea %1@(0,%2:l),%0";
2295 return "lea %1@(%c2),%0";
2296 #endif /* not MOTOROLA */
2297 #endif /* not SGS */
2299 if (GET_CODE (operands[2]) == CONST_INT)
2302 if (INTVAL (operands[2]) > 0
2303 && INTVAL (operands[2]) <= 8)
2304 return "addq%.l %2,%0";
2305 if (INTVAL (operands[2]) < 0
2306 && INTVAL (operands[2]) >= -8)
2308 operands[2] = GEN_INT (- INTVAL (operands[2]));
2309 return "subq%.l %2,%0";
2311 /* On the CPU32 it is faster to use two addql instructions to
2312 add a small integer (8 < N <= 16) to a register.
2313 Likewise for subql. */
2314 if (TARGET_CPU32 && REG_P (operands[0]))
2316 if (INTVAL (operands[2]) > 8
2317 && INTVAL (operands[2]) <= 16)
2319 operands[2] = GEN_INT (INTVAL (operands[2]) - 8);
2320 return "addq%.l %#8,%0\n\taddq%.l %2,%0";
2322 if (INTVAL (operands[2]) < -8
2323 && INTVAL (operands[2]) >= -16)
2325 operands[2] = GEN_INT (- INTVAL (operands[2]) - 8);
2326 return "subq%.l %#8,%0\n\tsubq%.l %2,%0";
2330 if (ADDRESS_REG_P (operands[0])
2331 && INTVAL (operands[2]) >= -0x8000
2332 && INTVAL (operands[2]) < 0x8000)
2335 return "add%.w %2,%0";
2338 return "lea (%c2,%0),%0";
2340 return "lea %0@(%c2),%0";
2344 return "add%.l %2,%0";
2347 /* Store in cc_status the expressions that the condition codes will
2348 describe after execution of an instruction whose pattern is EXP.
2349 Do not alter them if the instruction would not alter the cc's. */
2351 /* On the 68000, all the insns to store in an address register fail to
2352 set the cc's. However, in some cases these instructions can make it
2353 possibly invalid to use the saved cc's. In those cases we clear out
2354 some or all of the saved cc's so they won't be used. */
2357 notice_update_cc (exp, insn)
2361 if (GET_CODE (exp) == SET)
2363 if (GET_CODE (SET_SRC (exp)) == CALL)
2367 else if (ADDRESS_REG_P (SET_DEST (exp)))
2369 if (cc_status.value1 && modified_in_p (cc_status.value1, insn))
2370 cc_status.value1 = 0;
2371 if (cc_status.value2 && modified_in_p (cc_status.value2, insn))
2372 cc_status.value2 = 0;
2374 else if (!FP_REG_P (SET_DEST (exp))
2375 && SET_DEST (exp) != cc0_rtx
2376 && (FP_REG_P (SET_SRC (exp))
2377 || GET_CODE (SET_SRC (exp)) == FIX
2378 || GET_CODE (SET_SRC (exp)) == FLOAT_TRUNCATE
2379 || GET_CODE (SET_SRC (exp)) == FLOAT_EXTEND))
2383 /* A pair of move insns doesn't produce a useful overall cc. */
2384 else if (!FP_REG_P (SET_DEST (exp))
2385 && !FP_REG_P (SET_SRC (exp))
2386 && GET_MODE_SIZE (GET_MODE (SET_SRC (exp))) > 4
2387 && (GET_CODE (SET_SRC (exp)) == REG
2388 || GET_CODE (SET_SRC (exp)) == MEM
2389 || GET_CODE (SET_SRC (exp)) == CONST_DOUBLE))
2393 else if (GET_CODE (SET_SRC (exp)) == CALL)
2397 else if (XEXP (exp, 0) != pc_rtx)
2399 cc_status.flags = 0;
2400 cc_status.value1 = XEXP (exp, 0);
2401 cc_status.value2 = XEXP (exp, 1);
2404 else if (GET_CODE (exp) == PARALLEL
2405 && GET_CODE (XVECEXP (exp, 0, 0)) == SET)
2407 if (ADDRESS_REG_P (XEXP (XVECEXP (exp, 0, 0), 0)))
2409 else if (XEXP (XVECEXP (exp, 0, 0), 0) != pc_rtx)
2411 cc_status.flags = 0;
2412 cc_status.value1 = XEXP (XVECEXP (exp, 0, 0), 0);
2413 cc_status.value2 = XEXP (XVECEXP (exp, 0, 0), 1);
2418 if (cc_status.value2 != 0
2419 && ADDRESS_REG_P (cc_status.value2)
2420 && GET_MODE (cc_status.value2) == QImode)
2422 if (cc_status.value2 != 0)
2423 switch (GET_CODE (cc_status.value2))
2425 case PLUS: case MINUS: case MULT:
2426 case DIV: case UDIV: case MOD: case UMOD: case NEG:
2427 #if 0 /* These instructions always clear the overflow bit */
2428 case ASHIFT: case ASHIFTRT: case LSHIFTRT:
2429 case ROTATE: case ROTATERT:
2431 if (GET_MODE (cc_status.value2) != VOIDmode)
2432 cc_status.flags |= CC_NO_OVERFLOW;
2435 /* (SET r1 (ZERO_EXTEND r2)) on this machine
2436 ends with a move insn moving r2 in r2's mode.
2437 Thus, the cc's are set for r2.
2438 This can set N bit spuriously. */
2439 cc_status.flags |= CC_NOT_NEGATIVE;
2444 if (cc_status.value1 && GET_CODE (cc_status.value1) == REG
2446 && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2))
2447 cc_status.value2 = 0;
2448 if (((cc_status.value1 && FP_REG_P (cc_status.value1))
2449 || (cc_status.value2 && FP_REG_P (cc_status.value2))))
2450 cc_status.flags = CC_IN_68881;
2454 output_move_const_double (operands)
2457 int code = standard_68881_constant_p (operands[1]);
2461 static char buf[40];
2463 sprintf (buf, "fmovecr %%#0x%x,%%0", code & 0xff);
2466 return "fmove%.d %1,%0";
2470 output_move_const_single (operands)
2473 int code = standard_68881_constant_p (operands[1]);
2477 static char buf[40];
2479 sprintf (buf, "fmovecr %%#0x%x,%%0", code & 0xff);
2482 return "fmove%.s %f1,%0";
2485 /* Return nonzero if X, a CONST_DOUBLE, has a value that we can get
2486 from the "fmovecr" instruction.
2487 The value, anded with 0xff, gives the code to use in fmovecr
2488 to get the desired constant. */
2490 /* This code has been fixed for cross-compilation. */
2492 static int inited_68881_table = 0;
2494 static const char *const strings_68881[7] = {
2504 static const int codes_68881[7] = {
2514 REAL_VALUE_TYPE values_68881[7];
2516 /* Set up values_68881 array by converting the decimal values
2517 strings_68881 to binary. */
2524 enum machine_mode mode;
2527 for (i = 0; i < 7; i++)
2531 r = REAL_VALUE_ATOF (strings_68881[i], mode);
2532 values_68881[i] = r;
2534 inited_68881_table = 1;
2538 standard_68881_constant_p (x)
2544 #ifdef NO_ASM_FMOVECR
2548 /* fmovecr must be emulated on the 68040 and 68060, so it shouldn't be
2549 used at all on those chips. */
2550 if (TARGET_68040 || TARGET_68060)
2553 if (! inited_68881_table)
2554 init_68881_table ();
2556 REAL_VALUE_FROM_CONST_DOUBLE (r, x);
2558 /* Use REAL_VALUES_IDENTICAL instead of REAL_VALUES_EQUAL so that -0.0
2560 for (i = 0; i < 6; i++)
2562 if (REAL_VALUES_IDENTICAL (r, values_68881[i]))
2563 return (codes_68881[i]);
2566 if (GET_MODE (x) == SFmode)
2569 if (REAL_VALUES_EQUAL (r, values_68881[6]))
2570 return (codes_68881[6]);
2572 /* larger powers of ten in the constants ram are not used
2573 because they are not equal to a `double' C constant. */
2577 /* If X is a floating-point constant, return the logarithm of X base 2,
2578 or 0 if X is not a power of 2. */
2581 floating_exact_log2 (x)
2584 REAL_VALUE_TYPE r, r1;
2587 REAL_VALUE_FROM_CONST_DOUBLE (r, x);
2589 if (REAL_VALUES_LESS (r, dconst1))
2592 exp = real_exponent (&r);
2593 real_2expN (&r1, exp);
2594 if (REAL_VALUES_EQUAL (r1, r))
2600 /* A C compound statement to output to stdio stream STREAM the
2601 assembler syntax for an instruction operand X. X is an RTL
2604 CODE is a value that can be used to specify one of several ways
2605 of printing the operand. It is used when identical operands
2606 must be printed differently depending on the context. CODE
2607 comes from the `%' specification that was used to request
2608 printing of the operand. If the specification was just `%DIGIT'
2609 then CODE is 0; if the specification was `%LTR DIGIT' then CODE
2610 is the ASCII code for LTR.
2612 If X is a register, this macro should print the register's name.
2613 The names can be found in an array `reg_names' whose type is
2614 `char *[]'. `reg_names' is initialized from `REGISTER_NAMES'.
2616 When the machine description has a specification `%PUNCT' (a `%'
2617 followed by a punctuation character), this macro is called with
2618 a null pointer for X and the punctuation character for CODE.
2620 The m68k specific codes are:
2622 '.' for dot needed in Motorola-style opcode names.
2623 '-' for an operand pushing on the stack:
2624 sp@-, -(sp) or -(%sp) depending on the style of syntax.
2625 '+' for an operand pushing on the stack:
2626 sp@+, (sp)+ or (%sp)+ depending on the style of syntax.
2627 '@' for a reference to the top word on the stack:
2628 sp@, (sp) or (%sp) depending on the style of syntax.
2629 '#' for an immediate operand prefix (# in MIT and Motorola syntax
2630 but & in SGS syntax).
2631 '!' for the cc register (used in an `and to cc' insn).
2632 '$' for the letter `s' in an op code, but only on the 68040.
2633 '&' for the letter `d' in an op code, but only on the 68040.
2634 '/' for register prefix needed by longlong.h.
2636 'b' for byte insn (no effect, on the Sun; this is for the ISI).
2637 'd' to force memory addressing to be absolute, not relative.
2638 'f' for float insn (print a CONST_DOUBLE as a float rather than in hex)
2639 'o' for operands to go directly to output_operand_address (bypassing
2640 print_operand_address--used only for SYMBOL_REFs under TARGET_PCREL)
2641 'x' for float insn (print a CONST_DOUBLE as a float rather than in hex),
2642 or print pair of registers as rx:ry.
2647 print_operand (file, op, letter)
2648 FILE *file; /* file to write to */
2649 rtx op; /* operand to print */
2650 int letter; /* %<letter> or 0 */
2654 #if defined (MOTOROLA)
2655 fprintf (file, ".");
2658 else if (letter == '#')
2660 asm_fprintf (file, "%I");
2662 else if (letter == '-')
2665 asm_fprintf (file, "-(%Rsp)");
2667 asm_fprintf (file, "%Rsp@-");
2670 else if (letter == '+')
2673 asm_fprintf (file, "(%Rsp)+");
2675 asm_fprintf (file, "%Rsp@+");
2678 else if (letter == '@')
2681 asm_fprintf (file, "(%Rsp)");
2683 asm_fprintf (file, "%Rsp@");
2686 else if (letter == '!')
2688 asm_fprintf (file, "%Rfpcr");
2690 else if (letter == '$')
2692 if (TARGET_68040_ONLY)
2694 fprintf (file, "s");
2697 else if (letter == '&')
2699 if (TARGET_68040_ONLY)
2701 fprintf (file, "d");
2704 else if (letter == '/')
2706 asm_fprintf (file, "%R");
2708 else if (letter == 'o')
2710 /* This is only for direct addresses with TARGET_PCREL */
2711 if (GET_CODE (op) != MEM || GET_CODE (XEXP (op, 0)) != SYMBOL_REF
2714 output_addr_const (file, XEXP (op, 0));
2716 else if (GET_CODE (op) == REG)
2719 /* Print out the second register name of a register pair.
2720 I.e., R (6) => 7. */
2721 fputs (reg_names[REGNO (op) + 1], file);
2723 fputs (reg_names[REGNO (op)], file);
2725 else if (GET_CODE (op) == MEM)
2727 output_address (XEXP (op, 0));
2728 if (letter == 'd' && ! TARGET_68020
2729 && CONSTANT_ADDRESS_P (XEXP (op, 0))
2730 && !(GET_CODE (XEXP (op, 0)) == CONST_INT
2731 && INTVAL (XEXP (op, 0)) < 0x8000
2732 && INTVAL (XEXP (op, 0)) >= -0x8000))
2735 fprintf (file, ".l");
2737 fprintf (file, ":l");
2741 else if (GET_CODE (op) == CONST_DOUBLE && GET_MODE (op) == SFmode)
2744 REAL_VALUE_FROM_CONST_DOUBLE (r, op);
2745 ASM_OUTPUT_FLOAT_OPERAND (letter, file, r);
2747 else if (GET_CODE (op) == CONST_DOUBLE && GET_MODE (op) == XFmode)
2750 REAL_VALUE_FROM_CONST_DOUBLE (r, op);
2751 ASM_OUTPUT_LONG_DOUBLE_OPERAND (file, r);
2753 else if (GET_CODE (op) == CONST_DOUBLE && GET_MODE (op) == DFmode)
2756 REAL_VALUE_FROM_CONST_DOUBLE (r, op);
2757 ASM_OUTPUT_DOUBLE_OPERAND (file, r);
2761 /* Use `print_operand_address' instead of `output_addr_const'
2762 to ensure that we print relevant PIC stuff. */
2763 asm_fprintf (file, "%I");
2765 && (GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == CONST))
2766 print_operand_address (file, op);
2768 output_addr_const (file, op);
2773 /* A C compound statement to output to stdio stream STREAM the
2774 assembler syntax for an instruction operand that is a memory
2775 reference whose address is ADDR. ADDR is an RTL expression.
2777 Note that this contains a kludge that knows that the only reason
2778 we have an address (plus (label_ref...) (reg...)) when not generating
2779 PIC code is in the insn before a tablejump, and we know that m68k.md
2780 generates a label LInnn: on such an insn.
2782 It is possible for PIC to generate a (plus (label_ref...) (reg...))
2783 and we handle that just like we would a (plus (symbol_ref...) (reg...)).
2785 Some SGS assemblers have a bug such that "Lnnn-LInnn-2.b(pc,d0.l*2)"
2786 fails to assemble. Luckily "Lnnn(pc,d0.l*2)" produces the results
2787 we want. This difference can be accommodated by using an assembler
2788 define such "LDnnn" to be either "Lnnn-LInnn-2.b", "Lnnn", or any other
2789 string, as necessary. This is accomplished via the ASM_OUTPUT_CASE_END
2790 macro. See m68k/sgs.h for an example; for versions without the bug.
2791 Some assemblers refuse all the above solutions. The workaround is to
2792 emit "K(pc,d0.l*2)" with K being a small constant known to give the
2795 They also do not like things like "pea 1.w", so we simple leave off
2796 the .w on small constants.
2798 This routine is responsible for distinguishing between -fpic and -fPIC
2799 style relocations in an address. When generating -fpic code the
2800 offset is output in word mode (eg movel a5@(_foo:w), a0). When generating
2801 -fPIC code the offset is output in long mode (eg movel a5@(_foo:l), a0) */
2803 #ifndef ASM_OUTPUT_CASE_FETCH
2806 #define ASM_OUTPUT_CASE_FETCH(file, labelno, regname)\
2807 asm_fprintf (file, "%LLD%d(%Rpc,%s.", labelno, regname)
2809 #define ASM_OUTPUT_CASE_FETCH(file, labelno, regname)\
2810 asm_fprintf (file, "%LL%d-%LLI%d.b(%Rpc,%s.", labelno, labelno, regname)
2813 #define ASM_OUTPUT_CASE_FETCH(file, labelno, regname)\
2814 asm_fprintf (file, "%Rpc@(%LL%d-%LLI%d-2:b,%s:", labelno, labelno, regname)
2816 #endif /* ASM_OUTPUT_CASE_FETCH */
2819 print_operand_address (file, addr)
2823 register rtx reg1, reg2, breg, ireg;
2826 switch (GET_CODE (addr))
2830 fprintf (file, "(%s)", reg_names[REGNO (addr)]);
2832 fprintf (file, "%s@", reg_names[REGNO (addr)]);
2837 fprintf (file, "-(%s)", reg_names[REGNO (XEXP (addr, 0))]);
2839 fprintf (file, "%s@-", reg_names[REGNO (XEXP (addr, 0))]);
2844 fprintf (file, "(%s)+", reg_names[REGNO (XEXP (addr, 0))]);
2846 fprintf (file, "%s@+", reg_names[REGNO (XEXP (addr, 0))]);
2850 reg1 = reg2 = ireg = breg = offset = 0;
2851 if (CONSTANT_ADDRESS_P (XEXP (addr, 0)))
2853 offset = XEXP (addr, 0);
2854 addr = XEXP (addr, 1);
2856 else if (CONSTANT_ADDRESS_P (XEXP (addr, 1)))
2858 offset = XEXP (addr, 1);
2859 addr = XEXP (addr, 0);
2861 if (GET_CODE (addr) != PLUS)
2865 else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND)
2867 reg1 = XEXP (addr, 0);
2868 addr = XEXP (addr, 1);
2870 else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND)
2872 reg1 = XEXP (addr, 1);
2873 addr = XEXP (addr, 0);
2875 else if (GET_CODE (XEXP (addr, 0)) == MULT)
2877 reg1 = XEXP (addr, 0);
2878 addr = XEXP (addr, 1);
2880 else if (GET_CODE (XEXP (addr, 1)) == MULT)
2882 reg1 = XEXP (addr, 1);
2883 addr = XEXP (addr, 0);
2885 else if (GET_CODE (XEXP (addr, 0)) == REG)
2887 reg1 = XEXP (addr, 0);
2888 addr = XEXP (addr, 1);
2890 else if (GET_CODE (XEXP (addr, 1)) == REG)
2892 reg1 = XEXP (addr, 1);
2893 addr = XEXP (addr, 0);
2895 if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT
2896 || GET_CODE (addr) == SIGN_EXTEND)
2908 #if 0 /* for OLD_INDEXING */
2909 else if (GET_CODE (addr) == PLUS)
2911 if (GET_CODE (XEXP (addr, 0)) == REG)
2913 reg2 = XEXP (addr, 0);
2914 addr = XEXP (addr, 1);
2916 else if (GET_CODE (XEXP (addr, 1)) == REG)
2918 reg2 = XEXP (addr, 1);
2919 addr = XEXP (addr, 0);
2931 if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND
2932 || GET_CODE (reg1) == MULT))
2933 || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2))))
2938 else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1)))
2943 if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF
2944 && ! (flag_pic && ireg == pic_offset_table_rtx))
2947 if (GET_CODE (ireg) == MULT)
2949 scale = INTVAL (XEXP (ireg, 1));
2950 ireg = XEXP (ireg, 0);
2952 if (GET_CODE (ireg) == SIGN_EXTEND)
2954 ASM_OUTPUT_CASE_FETCH (file,
2955 CODE_LABEL_NUMBER (XEXP (addr, 0)),
2956 reg_names[REGNO (XEXP (ireg, 0))]);
2957 fprintf (file, "w");
2961 ASM_OUTPUT_CASE_FETCH (file,
2962 CODE_LABEL_NUMBER (XEXP (addr, 0)),
2963 reg_names[REGNO (ireg)]);
2964 fprintf (file, "l");
2969 fprintf (file, "*%d", scale);
2971 fprintf (file, ":%d", scale);
2977 if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF
2978 && ! (flag_pic && breg == pic_offset_table_rtx))
2980 ASM_OUTPUT_CASE_FETCH (file,
2981 CODE_LABEL_NUMBER (XEXP (addr, 0)),
2982 reg_names[REGNO (breg)]);
2983 fprintf (file, "l)");
2986 if (ireg != 0 || breg != 0)
2993 if (! flag_pic && addr && GET_CODE (addr) == LABEL_REF)
3000 output_addr_const (file, addr);
3001 if (flag_pic && (breg == pic_offset_table_rtx))
3003 fprintf (file, "@GOT");
3005 fprintf (file, ".w");
3008 fprintf (file, "(%s", reg_names[REGNO (breg)]);
3014 fprintf (file, "%s@(", reg_names[REGNO (breg)]);
3017 output_addr_const (file, addr);
3018 if ((flag_pic == 1) && (breg == pic_offset_table_rtx))
3019 fprintf (file, ":w");
3020 if ((flag_pic == 2) && (breg == pic_offset_table_rtx))
3021 fprintf (file, ":l");
3023 if (addr != 0 && ireg != 0)
3028 if (ireg != 0 && GET_CODE (ireg) == MULT)
3030 scale = INTVAL (XEXP (ireg, 1));
3031 ireg = XEXP (ireg, 0);
3033 if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND)
3036 fprintf (file, "%s.w", reg_names[REGNO (XEXP (ireg, 0))]);
3038 fprintf (file, "%s:w", reg_names[REGNO (XEXP (ireg, 0))]);
3044 fprintf (file, "%s.l", reg_names[REGNO (ireg)]);
3046 fprintf (file, "%s:l", reg_names[REGNO (ireg)]);
3052 fprintf (file, "*%d", scale);
3054 fprintf (file, ":%d", scale);
3060 else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF
3061 && ! (flag_pic && reg1 == pic_offset_table_rtx))
3063 ASM_OUTPUT_CASE_FETCH (file,
3064 CODE_LABEL_NUMBER (XEXP (addr, 0)),
3065 reg_names[REGNO (reg1)]);
3066 fprintf (file, "l)");
3069 /* FALL-THROUGH (is this really what we want?) */
3071 if (GET_CODE (addr) == CONST_INT
3072 && INTVAL (addr) < 0x8000
3073 && INTVAL (addr) >= -0x8000)
3077 /* Many SGS assemblers croak on size specifiers for constants. */
3078 fprintf (file, "%d", (int) INTVAL (addr));
3080 fprintf (file, "%d.w", (int) INTVAL (addr));
3083 fprintf (file, "%d:w", (int) INTVAL (addr));
3086 else if (GET_CODE (addr) == CONST_INT)
3088 fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (addr));
3090 else if (TARGET_PCREL)
3093 output_addr_const (file, addr);
3095 asm_fprintf (file, ":w,%Rpc)");
3097 asm_fprintf (file, ":l,%Rpc)");
3101 /* Special case for SYMBOL_REF if the symbol name ends in
3102 `.<letter>', this can be mistaken as a size suffix. Put
3103 the name in parentheses. */
3104 if (GET_CODE (addr) == SYMBOL_REF
3105 && strlen (XSTR (addr, 0)) > 2
3106 && XSTR (addr, 0)[strlen (XSTR (addr, 0)) - 2] == '.')
3109 output_addr_const (file, addr);
3113 output_addr_const (file, addr);
3119 /* Check for cases where a clr insns can be omitted from code using
3120 strict_low_part sets. For example, the second clrl here is not needed:
3121 clrl d0; movw a0@+,d0; use d0; clrl d0; movw a0@+; use d0; ...
3123 MODE is the mode of this STRICT_LOW_PART set. FIRST_INSN is the clear
3124 insn we are checking for redundancy. TARGET is the register set by the
3128 strict_low_part_peephole_ok (mode, first_insn, target)
3129 enum machine_mode mode;
3135 p = prev_nonnote_insn (first_insn);
3139 /* If it isn't an insn, then give up. */
3140 if (GET_CODE (p) != INSN)
3143 if (reg_set_p (target, p))
3145 rtx set = single_set (p);
3148 /* If it isn't an easy to recognize insn, then give up. */
3152 dest = SET_DEST (set);
3154 /* If this sets the entire target register to zero, then our
3155 first_insn is redundant. */
3156 if (rtx_equal_p (dest, target)
3157 && SET_SRC (set) == const0_rtx)
3159 else if (GET_CODE (dest) == STRICT_LOW_PART
3160 && GET_CODE (XEXP (dest, 0)) == REG
3161 && REGNO (XEXP (dest, 0)) == REGNO (target)
3162 && (GET_MODE_SIZE (GET_MODE (XEXP (dest, 0)))
3163 <= GET_MODE_SIZE (mode)))
3164 /* This is a strict low part set which modifies less than
3165 we are using, so it is safe. */
3171 p = prev_nonnote_insn (p);
3178 /* Accept integer operands in the range 0..0xffffffff. We have to check the
3179 range carefully since this predicate is used in DImode contexts. Also, we
3180 need some extra crud to make it work when hosted on 64-bit machines. */
3183 const_uint32_operand (op, mode)
3185 enum machine_mode mode;
3187 /* It doesn't make sense to ask this question with a mode that is
3188 not larger than 32 bits. */
3189 if (GET_MODE_BITSIZE (mode) <= 32)
3192 #if HOST_BITS_PER_WIDE_INT > 32
3193 /* All allowed constants will fit a CONST_INT. */
3194 return (GET_CODE (op) == CONST_INT
3195 && (INTVAL (op) >= 0 && INTVAL (op) <= 0xffffffffL));
3197 return (GET_CODE (op) == CONST_INT
3198 || (GET_CODE (op) == CONST_DOUBLE && CONST_DOUBLE_HIGH (op) == 0));
3202 /* Accept integer operands in the range -0x80000000..0x7fffffff. We have
3203 to check the range carefully since this predicate is used in DImode
3207 const_sint32_operand (op, mode)
3209 enum machine_mode mode;
3211 /* It doesn't make sense to ask this question with a mode that is
3212 not larger than 32 bits. */
3213 if (GET_MODE_BITSIZE (mode) <= 32)
3216 /* All allowed constants will fit a CONST_INT. */
3217 return (GET_CODE (op) == CONST_INT
3218 && (INTVAL (op) >= (-0x7fffffff - 1) && INTVAL (op) <= 0x7fffffff));
3221 /* Operand predicates for implementing asymmetric pc-relative addressing
3222 on m68k. The m68k supports pc-relative addressing (mode 7, register 2)
3223 when used as a source operand, but not as a destination operand.
3225 We model this by restricting the meaning of the basic predicates
3226 (general_operand, memory_operand, etc) to forbid the use of this
3227 addressing mode, and then define the following predicates that permit
3228 this addressing mode. These predicates can then be used for the
3229 source operands of the appropriate instructions.
3231 n.b. While it is theoretically possible to change all machine patterns
3232 to use this addressing more where permitted by the architecture,
3233 it has only been implemented for "common" cases: SImode, HImode, and
3234 QImode operands, and only for the principle operations that would
3235 require this addressing mode: data movement and simple integer operations.
3237 In parallel with these new predicates, two new constraint letters
3238 were defined: 'S' and 'T'. 'S' is the -mpcrel analog of 'm'.
3239 'T' replaces 's' in the non-pcrel case. It is a no-op in the pcrel case.
3240 In the pcrel case 's' is only valid in combination with 'a' registers.
3241 See addsi3, subsi3, cmpsi, and movsi patterns for a better understanding
3242 of how these constraints are used.
3244 The use of these predicates is strictly optional, though patterns that
3245 don't will cause an extra reload register to be allocated where one
3248 lea (abc:w,%pc),%a0 ; need to reload address
3249 moveq &1,%d1 ; since write to pc-relative space
3250 movel %d1,%a0@ ; is not allowed
3252 lea (abc:w,%pc),%a1 ; no need to reload address here
3253 movel %a1@,%d0 ; since "movel (abc:w,%pc),%d0" is ok
3255 For more info, consult tiemann@cygnus.com.
3258 All of the ugliness with predicates and constraints is due to the
3259 simple fact that the m68k does not allow a pc-relative addressing
3260 mode as a destination. gcc does not distinguish between source and
3261 destination addresses. Hence, if we claim that pc-relative address
3262 modes are valid, e.g. GO_IF_LEGITIMATE_ADDRESS accepts them, then we
3263 end up with invalid code. To get around this problem, we left
3264 pc-relative modes as invalid addresses, and then added special
3265 predicates and constraints to accept them.
3267 A cleaner way to handle this is to modify gcc to distinguish
3268 between source and destination addresses. We can then say that
3269 pc-relative is a valid source address but not a valid destination
3270 address, and hopefully avoid a lot of the predicate and constraint
3271 hackery. Unfortunately, this would be a pretty big change. It would
3272 be a useful change for a number of ports, but there aren't any current
3273 plans to undertake this.
3275 ***************************************************************************/
3278 /* Special case of a general operand that's used as a source operand.
3279 Use this to permit reads from PC-relative memory when -mpcrel
3283 general_src_operand (op, mode)
3285 enum machine_mode mode;
3288 && GET_CODE (op) == MEM
3289 && (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
3290 || GET_CODE (XEXP (op, 0)) == LABEL_REF
3291 || GET_CODE (XEXP (op, 0)) == CONST))
3293 return general_operand (op, mode);
3296 /* Special case of a nonimmediate operand that's used as a source.
3297 Use this to permit reads from PC-relative memory when -mpcrel
3301 nonimmediate_src_operand (op, mode)
3303 enum machine_mode mode;
3305 if (TARGET_PCREL && GET_CODE (op) == MEM
3306 && (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
3307 || GET_CODE (XEXP (op, 0)) == LABEL_REF
3308 || GET_CODE (XEXP (op, 0)) == CONST))
3310 return nonimmediate_operand (op, mode);
3313 /* Special case of a memory operand that's used as a source.
3314 Use this to permit reads from PC-relative memory when -mpcrel
3318 memory_src_operand (op, mode)
3320 enum machine_mode mode;
3322 if (TARGET_PCREL && GET_CODE (op) == MEM
3323 && (GET_CODE (XEXP (op, 0)) == SYMBOL_REF
3324 || GET_CODE (XEXP (op, 0)) == LABEL_REF
3325 || GET_CODE (XEXP (op, 0)) == CONST))
3327 return memory_operand (op, mode);
3330 /* Predicate that accepts only a pc-relative address. This is needed
3331 because pc-relative addresses don't satisfy the predicate
3332 "general_src_operand". */
3335 pcrel_address (op, mode)
3337 enum machine_mode mode ATTRIBUTE_UNUSED;
3339 return (GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == LABEL_REF
3340 || GET_CODE (op) == CONST);
3344 output_andsi3 (operands)
3348 if (GET_CODE (operands[2]) == CONST_INT
3349 && (INTVAL (operands[2]) | 0xffff) == 0xffffffff
3350 && (DATA_REG_P (operands[0])
3351 || offsettable_memref_p (operands[0]))
3354 if (GET_CODE (operands[0]) != REG)
3355 operands[0] = adjust_address (operands[0], HImode, 2);
3356 operands[2] = GEN_INT (INTVAL (operands[2]) & 0xffff);
3357 /* Do not delete a following tstl %0 insn; that would be incorrect. */
3359 if (operands[2] == const0_rtx)
3361 return "and%.w %2,%0";
3363 if (GET_CODE (operands[2]) == CONST_INT
3364 && (logval = exact_log2 (~ INTVAL (operands[2]))) >= 0
3365 && (DATA_REG_P (operands[0])
3366 || offsettable_memref_p (operands[0])))
3368 if (DATA_REG_P (operands[0]))
3370 operands[1] = GEN_INT (logval);
3374 operands[0] = adjust_address (operands[0], SImode, 3 - (logval / 8));
3375 operands[1] = GEN_INT (logval % 8);
3377 /* This does not set condition codes in a standard way. */
3379 return "bclr %1,%0";
3381 return "and%.l %2,%0";
3385 output_iorsi3 (operands)
3388 register int logval;
3389 if (GET_CODE (operands[2]) == CONST_INT
3390 && INTVAL (operands[2]) >> 16 == 0
3391 && (DATA_REG_P (operands[0])
3392 || offsettable_memref_p (operands[0]))
3395 if (GET_CODE (operands[0]) != REG)
3396 operands[0] = adjust_address (operands[0], HImode, 2);
3397 /* Do not delete a following tstl %0 insn; that would be incorrect. */
3399 if (INTVAL (operands[2]) == 0xffff)
3400 return "mov%.w %2,%0";
3401 return "or%.w %2,%0";
3403 if (GET_CODE (operands[2]) == CONST_INT
3404 && (logval = exact_log2 (INTVAL (operands[2]))) >= 0
3405 && (DATA_REG_P (operands[0])
3406 || offsettable_memref_p (operands[0])))
3408 if (DATA_REG_P (operands[0]))
3409 operands[1] = GEN_INT (logval);
3412 operands[0] = adjust_address (operands[0], SImode, 3 - (logval / 8));
3413 operands[1] = GEN_INT (logval % 8);
3416 return "bset %1,%0";
3418 return "or%.l %2,%0";
3422 output_xorsi3 (operands)
3425 register int logval;
3426 if (GET_CODE (operands[2]) == CONST_INT
3427 && INTVAL (operands[2]) >> 16 == 0
3428 && (offsettable_memref_p (operands[0]) || DATA_REG_P (operands[0]))
3431 if (! DATA_REG_P (operands[0]))
3432 operands[0] = adjust_address (operands[0], HImode, 2);
3433 /* Do not delete a following tstl %0 insn; that would be incorrect. */
3435 if (INTVAL (operands[2]) == 0xffff)
3437 return "eor%.w %2,%0";
3439 if (GET_CODE (operands[2]) == CONST_INT
3440 && (logval = exact_log2 (INTVAL (operands[2]))) >= 0
3441 && (DATA_REG_P (operands[0])
3442 || offsettable_memref_p (operands[0])))
3444 if (DATA_REG_P (operands[0]))
3445 operands[1] = GEN_INT (logval);
3448 operands[0] = adjust_address (operands[0], SImode, 3 - (logval / 8));
3449 operands[1] = GEN_INT (logval % 8);
3452 return "bchg %1,%0";
3454 return "eor%.l %2,%0";
3457 /* Output assembly to switch to section NAME with attribute FLAGS. */
3460 m68k_coff_asm_named_section (name, flags)
3466 if (flags & SECTION_WRITE)
3471 fprintf (asm_out_file, "\t.section\t%s,\"%c\"\n", name, flagchar);
3474 #ifdef CTOR_LIST_BEGIN
3476 m68k_svr3_asm_out_constructor (symbol, priority)
3478 int priority ATTRIBUTE_UNUSED;
3483 xop[0] = gen_rtx_MEM (SImode, gen_rtx_PRE_DEC (SImode, stack_pointer_rtx));
3486 output_asm_insn (output_move_simode (xop), xop);
3492 m68k_hp320_internal_label (stream, prefix, labelno)
3495 unsigned long labelno;
3497 if (prefix[0] == 'L' && prefix[1] == 'I')
3498 fprintf(stream, "\tset %s%ld,.+2\n", prefix, labelno);
3500 fprintf (stream, "%s%ld:\n", prefix, labelno);
3504 m68k_hp320_file_start ()
3506 /* version 1: 68010.
3507 2: 68020 without FPU.
3508 3: 68020 with FPU. */
3509 fprintf (asm_out_file, "\tversion %d\n",
3510 TARGET_68020 ? (TARGET_68881 ? 3 : 2) : 1);
3515 m68k_output_mi_thunk (file, thunk, delta, vcall_offset, function)
3517 tree thunk ATTRIBUTE_UNUSED;
3518 HOST_WIDE_INT delta;
3519 HOST_WIDE_INT vcall_offset ATTRIBUTE_UNUSED;
3525 if (delta > 0 && delta <= 8)
3527 asm_fprintf (file, "\taddq.l %I%d,4(%Rsp)\n", (int) delta);
3529 asm_fprintf (file, "\taddql %I%d,%Rsp@(4)\n", (int) delta);
3531 else if (delta < 0 && delta >= -8)
3533 asm_fprintf (file, "\tsubq.l %I%d,4(%Rsp)\n", (int) -delta);
3535 asm_fprintf (file, "\tsubql %I%d,%Rsp@(4)\n", (int) -delta);
3539 asm_fprintf (file, "\tadd.l %I%wd,4(%Rsp)\n", delta);
3541 asm_fprintf (file, "\taddl %I%wd,%Rsp@(4)\n", delta);
3544 xops[0] = DECL_RTL (function);
3546 /* Logic taken from call patterns in m68k.md. */
3558 fmt = "bra.l %0@PLTPC";
3560 fmt = "bra %0@PLTPC";
3574 #if defined (MOTOROLA) && !defined (USE_GAS)
3581 output_asm_insn (fmt, xops);