1 /* Definitions of target machine for GNU compiler. AT&T DSP1600.
2 Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
3 Contributed by Michael Collison (collison@world.std.com).
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 1, 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. */
22 extern char *low_reg_names[];
23 extern char *text_seg_name;
24 extern char *rsect_text;
25 extern char *data_seg_name;
26 extern char *rsect_data;
27 extern char *bss_seg_name;
28 extern char *rsect_bss;
29 extern char *const_seg_name;
30 extern char *rsect_const;
31 extern char *chip_name;
32 extern char *save_chip_name;
33 extern struct rtx_def *dsp16xx_compare_op0, *dsp16xx_compare_op1;
34 extern struct rtx_def *(*dsp16xx_compare_gen)();
35 extern struct rtx_def *gen_compare_reg();
36 extern struct rtx_def *dsp16xx_addhf3_libcall;
37 extern struct rtx_def *dsp16xx_subhf3_libcall;
38 extern struct rtx_def *dsp16xx_mulhf3_libcall;
39 extern struct rtx_def *dsp16xx_divhf3_libcall;
40 extern struct rtx_def *dsp16xx_cmphf3_libcall;
41 extern struct rtx_def *dsp16xx_fixhfhi2_libcall;
42 extern struct rtx_def *dsp16xx_floathihf2_libcall;
43 extern struct rtx_def *dsp16xx_neghf2_libcall;
44 extern struct rtx_def *dsp16xx_umulhi3_libcall;
45 extern struct rtx_def *dsp16xx_mulhi3_libcall;
46 extern struct rtx_def *dsp16xx_udivqi3_libcall;
47 extern struct rtx_def *dsp16xx_udivhi3_libcall;
48 extern struct rtx_def *dsp16xx_divqi3_libcall;
49 extern struct rtx_def *dsp16xx_divhi3_libcall;
50 extern struct rtx_def *dsp16xx_modqi3_libcall;
51 extern struct rtx_def *dsp16xx_modhi3_libcall;
52 extern struct rtx_def *dsp16xx_umodqi3_libcall;
53 extern struct rtx_def *dsp16xx_umodhi3_libcall;
55 extern struct rtx_def *dsp16xx_ashrhi3_libcall;
56 extern struct rtx_def *dsp16xx_ashlhi3_libcall;
57 extern struct rtx_def *dsp16xx_lshrhi3_libcall;
60 extern int hard_regno_mode_ok ();
61 extern enum reg_class dsp16xx_reg_class_from_letter ();
62 extern enum reg_class dsp16xx_limit_reload_class ();
63 extern int hard_regno_nregs ();
64 extern int regno_reg_class ();
65 extern int move_operand ();
66 extern int symbolic_address_p ();
67 extern int Y_address ();
68 extern int call_address_operand ();
69 extern void notice_update_cc();
70 extern void function_prologue ();
71 extern void function_epilogue ();
72 extern int dsp1600_comparison_reverse ();
73 extern void double_reg_from_memory ();
74 extern void double_reg_to_memory ();
75 extern void bss_section ();
76 extern struct rtx_def *dsp16xx_function_arg ();
77 extern void dsp16xx_function_arg_advance ();
78 extern enum rtx_code next_cc_user_code ();
79 extern enum rtx_code save_next_cc_user_code;
80 extern struct rtx_def *gen_tst_reg ();
81 extern char *output_block_move();
83 /* RUN-TIME TARGET SPECIFICATION */
86 /* Name of the AT&T assembler */
88 #define ASM_PROG "as1600"
90 /* Name of the AT&T linker */
92 #define LD_PROG "ld1600"
94 /* Define which switches take word arguments */
95 #define WORD_SWITCH_TAKES_ARG(STR) \
96 (!strcmp (STR, "ifile") ? 1 : \
104 /* Define this as a spec to call the AT&T assembler */
106 #define CROSS_ASM_SPEC "%{!S:as1600 %a %i\n }"
108 /* Define this as a spec to call the AT&T linker */
110 #define CROSS_LINK_SPEC "%{!c:%{!M:%{!MM:%{!E:%{!S:ld1600 %l %X %{o*} %{m} \
111 %{r} %{s} %{t} %{u*} %{x}\
112 %{!A:%{!nostdlib:%{!nostartfiles:%S}}} %{static:}\
113 %{L*} %D %o %{!nostdlib:-le1600 %L -le1600}\
114 %{!A:%{!nostdlib:%{!nostartfiles:%E}}}\n }}}}}"
116 /* Nothing complicated here, just link with libc.a under normal
118 #define LIB_SPEC "-lc"
120 /* Specify the startup file to link with. */
121 #define STARTFILE_SPEC "%{mmap1:m1_crt0.o%s} \
122 %{mmap2:m2_crt0.o%s} \
123 %{mmap3:m3_crt0.o%s} \
124 %{mmap4:m4_crt0.o%s} \
125 %{!mmap*: %{!ifile*: m4_crt0.o%s} %{ifile*: \
126 %eA -ifile option requires a -map option}}"
128 /* Specify the end file to link with */
130 #define ENDFILE_SPEC "%{mmap1:m1_crtn.o%s} \
131 %{mmap2:m2_crtn.o%s} \
132 %{mmap3:m3_crtn.o%s} \
133 %{mmap4:m4_crtn.o%s} \
134 %{!mmap*: %{!ifile*: m4_crtn.o%s} %{ifile*: \
135 %eA -ifile option requires a -map option}}"
138 /* Tell gcc where to look for the startfile */
139 #define STANDARD_STARTFILE_PREFIX "/d1600/lib"
141 /* Tell gcc where to look for it's executables */
142 #define STANDARD_EXEC_PREFIX "/d1600/bin"
144 /* Command line options to the AT&T assembler */
145 #define ASM_SPEC "%{v:-V} %{g*:-g}"
147 /* Command line options for the AT&T linker */
148 #define LINK_SPEC "%{v:-V} %{minit:-i} \
149 %{!ifile*:%{mmap1:-ifile m1_deflt.if%s} \
150 %{mmap2:-ifile m2_deflt.if%s} \
151 %{mmap3:-ifile m3_deflt.if%s} \
152 %{mmap4:-ifile m4_deflt.if%s} \
153 %{!mmap*:-ifile m4_deflt.if%s}} \
156 /* Names to predefine in the preprocessor for this target machine. */
158 #define CPP_PREDEFINES "-Ddsp1600 -DDSP1600 -DMSDOS"
160 #define CPP_PREDEFINES "-Ddsp1600 -DDSP1600 -Ddsp1610 -DDSP1610"
163 /* Run-time compilation parameters selecting different hardware subsets. */
165 extern int target_flags;
167 /* Macros used in the machine description to test the flags. */
169 #define MASK_REGPARM 0x00000001 /* Pass parameters in registers */
170 #define MASK_NEAR_CALL 0x00000002 /* The call is on the same 4k page */
171 #define MASK_NEAR_JUMP 0x00000004 /* The jump is on the same 4k page */
172 #define MASK_BMU 0x00000008 /* Use the 'bmu' shift instructions */
173 #define MASK_OPTIMIZE_MEMORY 0x00000010 /* Optimize to conserve memory */
174 #define MASK_OPTIMIZE_SPEED 0x00000020 /* Optimize for speed */
175 #define MASK_MAP1 0x00000040 /* Link with map1 */
176 #define MASK_MAP2 0x00000080 /* Link with map2 */
177 #define MASK_MAP3 0x00000100 /* Link with map3 */
178 #define MASK_MAP4 0x00000200 /* Link with map4 */
179 #define MASK_YBASE_HIGH 0x00000400 /* The ybase register window starts high */
180 #define MASK_INIT 0x00000800 /* Have the linker generate tables to
181 initialize data at startup */
182 #define MASK_INLINE_MULT 0x00001000 /* Inline 32 bit multiplies */
183 #define MASK_RESERVE_YBASE 0x00002000 /* Reserved the ybase registers */
185 /* Compile passing first two args in regs 0 and 1.
186 This exists only to test compiler features that will
187 be needed for RISC chips. It is not usable
188 and is not intended to be usable on this cpu. */
189 #define TARGET_REGPARM (target_flags & MASK_REGPARM)
191 /* The call is on the same 4k page, so instead of loading
192 the 'pt' register and branching, we can branch directly */
194 #define TARGET_NEAR_CALL (target_flags & MASK_NEAR_CALL)
196 /* The jump is on the same 4k page, so instead of loading
197 the 'pt' register and branching, we can branch directly */
199 #define TARGET_NEAR_JUMP (target_flags & MASK_NEAR_JUMP)
201 /* Generate shift instructions to use the 1610 Bit Manipulation
203 #define TARGET_BMU (target_flags & MASK_BMU)
205 /* Optimize to conserve memory */
206 #define TARGET_OPTIMIZE_MEMORY (target_flags & MASK_OPTIMIZE_MEMORY)
208 /* Optimize for maximum speed */
209 #define TARGET_OPTIMIZE_SPEED (target_flags & MASK_OPTIMIZE_SPEED)
211 #define TARGET_YBASE_HIGH (target_flags & MASK_YBASE_HIGH)
213 /* Direct the linker to output extra info for initialized data */
214 #define TARGET_MASK_INIT (target_flags & MASK_INIT)
216 #define TARGET_INLINE_MULT (target_flags & MASK_INLINE_MULT)
218 /* Reserve the ybase registers *(0) - *(31) */
219 #define TARGET_RESERVE_YBASE (target_flags & MASK_RESERVE_YBASE)
221 /* Macro to define tables used to set the flags.
222 This is a list in braces of pairs in braces,
223 each pair being { "NAME", VALUE }
224 where VALUE is the bits to set or minus the bits to clear.
225 An empty string NAME is used to identify the default VALUE. */
228 #define TARGET_SWITCHES \
230 { "regparm", MASK_REGPARM}, \
231 { "no-regparm", -MASK_REGPARM}, \
232 { "no-near-call", -MASK_NEAR_CALL}, \
233 { "near-jump", MASK_NEAR_JUMP}, \
234 { "no-near-jump", -MASK_NEAR_JUMP}, \
235 { "bmu", MASK_BMU}, \
236 { "no-bmu", -MASK_BMU}, \
237 { "Om", MASK_OPTIMIZE_MEMORY}, \
238 { "Os", MASK_OPTIMIZE_SPEED}, \
239 { "map1", MASK_MAP1}, \
240 { "map2", MASK_MAP2}, \
241 { "map3", MASK_MAP3}, \
242 { "map4", MASK_MAP4}, \
243 { "ybase-high", MASK_YBASE_HIGH}, \
244 { "init", MASK_INIT}, \
245 { "inline-mult", MASK_INLINE_MULT}, \
246 { "reserve-ybase", MASK_RESERVE_YBASE}, \
247 { "", TARGET_DEFAULT} \
250 /* Default target_flags if no switches are specified */
251 #ifndef TARGET_DEFAULT
252 #define TARGET_DEFAULT MASK_OPTIMIZE_MEMORY|MASK_REGPARM|MASK_YBASE_HIGH
255 /* This macro is similar to `TARGET_SWITCHES' but defines names of
256 command options that have values. Its definition is an
257 initializer with a subgrouping for each command option.
259 Each subgrouping contains a string constant, that defines the
260 fixed part of the option name, and the address of a variable.
261 The variable, type `char *', is set to the variable part of the
262 given option if the fixed part matches. The actual option name
263 is made by appending `-m' to the specified name.
265 Here is an example which defines `-mshort-data-NUMBER'. If the
266 given option is `-mshort-data-512', the variable `m88k_short_data'
267 will be set to the string `"512"'.
269 extern char *m88k_short_data;
270 #define TARGET_OPTIONS { { "short-data-", &m88k_short_data } } */
272 #define TARGET_OPTIONS \
274 { "text=", &text_seg_name }, \
275 { "data=", &data_seg_name }, \
276 { "bss=", &bss_seg_name }, \
277 { "const=", &const_seg_name }, \
278 { "chip=", &chip_name } \
281 /* Sometimes certain combinations of command options do not make sense
282 on a particular target machine. You can define a macro
283 `OVERRIDE_OPTIONS' to take account of this. This macro, if
284 defined, is executed once just after all the command options have
287 #define OVERRIDE_OPTIONS override_options ()
289 #define OPTIMIZATION_OPTIONS(LEVEL) \
291 flag_gnu_linker = FALSE; \
295 flag_omit_frame_pointer = TRUE; \
296 flag_thread_jumps = TRUE; \
301 flag_strength_reduce = TRUE; \
302 flag_cse_follow_jumps = TRUE; \
303 flag_cse_skip_blocks = TRUE; \
304 flag_expensive_optimizations = TRUE; \
305 flag_rerun_cse_after_loop = TRUE; \
310 flag_inline_functions = 1; \
316 /* Define if you don't want extended real, but do want to use the
317 software floating point emulator for REAL_ARITHMETIC and
318 decimal <-> binary conversion. */
319 #define REAL_ARITHMETIC
321 /* Define this if most significant bit is lowest numbered
322 in instructions that operate on numbered bit-fields.
324 #define BITS_BIG_ENDIAN 1
326 /* Define this if most significant byte of a word is the lowest numbered.
327 We define big-endian, but since the 1600 series cannot address bytes
328 it does not matter. */
329 #define BYTES_BIG_ENDIAN 1
331 /* Define this if most significant word of a multiword number is numbered.
332 For the 1600 we can decide arbitrarily since there are no machine instructions for them. */
333 #define WORDS_BIG_ENDIAN 1
335 /* number of bits in an addressable storage unit */
336 #define BITS_PER_UNIT 16
338 /* Width in bits of a "word", which is the contents of a machine register.
339 Note that this is not necessarily the width of data type `int';
340 if using 16-bit ints on a 68000, this would still be 32.
341 But on a machine with 16-bit registers, this would be 16. */
342 #define BITS_PER_WORD 16
344 /* Maximum number of bits in a word. */
345 #define MAX_BITS_PER_WORD 16
347 /* Width of a word, in units (bytes). */
348 #define UNITS_PER_WORD 1
350 /* Width in bits of a pointer.
351 See also the macro `Pmode' defined below. */
352 #define POINTER_SIZE 16
354 /* Allocation boundary (in *bits*) for storing pointers in memory. */
355 #define POINTER_BOUNDARY 16
357 /* Allocation boundary (in *bits*) for storing arguments in argument list. */
358 #define PARM_BOUNDARY 16
360 /* Boundary (in *bits*) on which stack pointer should be aligned. */
361 #define STACK_BOUNDARY 16
363 /* Allocation boundary (in *bits*) for the code of a function. */
364 #define FUNCTION_BOUNDARY 16
366 /* Biggest alignment that any data type can require on this machine, in bits. */
367 #define BIGGEST_ALIGNMENT 16
369 /* Biggest alignment that any structure field can require on this machine, in bits */
370 #define BIGGEST_FIELD_ALIGNMENT 16
372 /* Alignment of field after `int : 0' in a structure. */
373 #define EMPTY_FIELD_BOUNDARY 16
375 /* Number of bits which any structure or union's size must be a multiple of. Each structure
376 or union's size is rounded up to a multiple of this */
377 #define STRUCTURE_SIZE_BOUNDARY 16
379 /* Define this if move instructions will actually fail to work
380 when given unaligned data. */
381 #define STRICT_ALIGNMENT 1
383 /* An integer expression for the size in bits of the largest integer machine mode that
384 should actually be used. All integer machine modes of this size or smaller can be
385 used for structures and unions with the appropriate sizes. */
386 #define MAX_FIXED_MODE_SIZE 32
388 /* LAYOUT OF SOURCE LANGUAGE DATA TYPES */
390 #define CHAR_TYPE_SIZE 16
391 #define SHORT_TYPE_SIZE 16
392 #define INT_TYPE_SIZE 16
393 #define LONG_TYPE_SIZE 32
394 #define LONG_LONG_TYPE_SIZE 32
395 #define FLOAT_TYPE_SIZE 32
396 #define DOUBLE_TYPE_SIZE 32
397 #define LONG_DOUBLE_TYPE_SIZE 32
399 /* An expression whose value is 1 or 0, according to whether the type char should be
400 signed or unsigned by default. */
402 #define DEFAULT_SIGNED_CHAR 1
404 /* A C expression to determine whether to give an enum type only as many bytes
405 as it takes to represent the range of possible values of that type. A nonzero
406 value means to do that; a zero value means all enum types should be allocated
409 #define DEFAULT_SHORT_ENUMS 0
411 /* A C expression for a string describing the name of the data type to use for
414 #define SIZE_TYPE "long unsigned int"
416 /* A C expression for a string describing the name of the datat type to use for the
417 result of subtracting two pointers */
419 #define PTRDIFF_TYPE "long int"
421 #define TARGET_BELL '\a'
422 #define TARGET_BS '\b'
423 #define TARGET_TAB '\t'
424 #define TARGET_NEWLINE '\n'
425 #define TARGET_VT '\v'
426 #define TARGET_FF '\f'
427 #define TARGET_CR '\r'
430 /* REGISTER USAGE. */
432 #define ALL_16_BIT_REGISTERS 1
434 /* Number of actual hardware registers.
435 The hardware registers are assigned numbers for the compiler
436 from 0 to FIRST_PSEUDO_REGISTER-1 */
438 #define FIRST_PSEUDO_REGISTER REG_YBASE31 + 1
440 /* 1 for registers that have pervasive standard uses
441 and are not available for the register allocator.
443 The registers are layed out as follows:
445 {a0,a0l,a1,a1l,x,y,yl,p,pl} - Data Arithmetic Unit
446 {r0,r1,r2,r3,j,k,ybase} - Y Space Address Arithmetic Unit
447 {pt} - X Space Address Arithmetic Unit
448 {ar0,ar1,ar2,ar3} - Bit Manipulation UNit
449 {pr} - Return Address Register
451 We reserve r2 for the Stack Pointer.
452 We specify r3 for the Frame Pointer but allow the compiler
453 to omit it when possible since we have so few pointer registers. */
481 #define REG_YBASE0 26
482 #define REG_YBASE1 27
483 #define REG_YBASE2 28
484 #define REG_YBASE3 29
485 #define REG_YBASE4 30
486 #define REG_YBASE5 31
487 #define REG_YBASE6 32
488 #define REG_YBASE7 33
489 #define REG_YBASE8 34
490 #define REG_YBASE9 35
491 #define REG_YBASE10 36
492 #define REG_YBASE11 37
493 #define REG_YBASE12 38
494 #define REG_YBASE13 39
495 #define REG_YBASE14 40
496 #define REG_YBASE15 41
497 #define REG_YBASE16 42
498 #define REG_YBASE17 43
499 #define REG_YBASE18 44
500 #define REG_YBASE19 45
501 #define REG_YBASE20 46
502 #define REG_YBASE21 47
503 #define REG_YBASE22 48
504 #define REG_YBASE23 49
505 #define REG_YBASE24 50
506 #define REG_YBASE25 51
507 #define REG_YBASE26 52
508 #define REG_YBASE27 53
509 #define REG_YBASE28 54
510 #define REG_YBASE29 55
511 #define REG_YBASE30 56
512 #define REG_YBASE31 57
514 /* Do we have a accumulator register? */
515 #define IS_ACCUM_REG(REGNO) ((REGNO) >= REG_A0 && (REGNO) <= REG_A1L)
516 #define IS_ACCUM_LOW_REG(REGNO) ((REGNO) == REG_A0L || (REGNO) == REG_A1L)
518 /* Do we have a virtual ybase register */
519 #define IS_YBASE_REGISTER_WINDOW(REGNO) ((REGNO) >= REG_YBASE0 && (REGNO) <= REG_YBASE31)
521 #define IS_ADDRESS_REGISTER(REGNO) ((REGNO) >= REG_R0 && (REGNO) <= REG_R3)
523 #define FIXED_REGISTERS \
524 {0, 0, 0, 0, 0, 0, 0, 0, 0, \
525 0, 0, 0, 1, 0, 0, 1, \
530 0, 0, 0, 0, 0, 0, 0, 0, \
531 0, 0, 0, 0, 0, 0, 0, 0, \
532 0, 0, 0, 0, 0, 0, 0, 0, \
533 0, 0, 0, 0, 0, 0, 0, 0}
535 /* 1 for registers not available across function calls.
536 These must include the FIXED_REGISTERS and also any
537 registers that can be used without being saved.
538 The latter must include the registers where values are returned
539 and the register where structure-value addresses are passed.
540 On the 1610 'a0' holds return values from functions. 'r0' holds
541 structure-value addresses.
543 In addition we don't save either j, k, ybase or any of the
544 bit manipulation registers. */
547 #define CALL_USED_REGISTERS \
548 {1, 1, 1, 1, 0, 1, 1, 1, 1, \
549 1, 0, 0, 1, 1, 1, 1, \
554 0, 0, 0, 0, 0, 0, 0, 0, \
555 0, 0, 0, 0, 0, 0, 0, 0, \
556 0, 0, 0, 0, 0, 0, 0, 0, \
557 0, 0, 0, 0, 0, 0, 0, 0}
559 /* List the order in which to allocate registers. Each register must be
560 listed once, even those in FIXED_REGISTERS.
562 We allocate in the following order:
565 #define REG_ALLOC_ORDER \
566 { REG_R0, REG_R1, REG_R2, REG_PROD, REG_Y, REG_X, \
567 REG_PRODL, REG_YL, REG_AR0, REG_AR1, \
568 REG_RB, REG_A0, REG_A1, REG_A0L, \
569 REG_A1L, REG_AR2, REG_AR3, \
570 REG_YBASE, REG_J, REG_K, REG_PR, REG_PT, REG_C0, \
571 REG_C1, REG_C2, REG_R3, \
572 REG_YBASE0, REG_YBASE1, REG_YBASE2, REG_YBASE3, \
573 REG_YBASE4, REG_YBASE5, REG_YBASE6, REG_YBASE7, \
574 REG_YBASE8, REG_YBASE9, REG_YBASE10, REG_YBASE11, \
575 REG_YBASE12, REG_YBASE13, REG_YBASE14, REG_YBASE15, \
576 REG_YBASE16, REG_YBASE17, REG_YBASE18, REG_YBASE19, \
577 REG_YBASE20, REG_YBASE21, REG_YBASE22, REG_YBASE23, \
578 REG_YBASE24, REG_YBASE25, REG_YBASE26, REG_YBASE27, \
579 REG_YBASE28, REG_YBASE29, REG_YBASE30, REG_YBASE31 }
581 /* Zero or more C statements that may conditionally modify two
582 variables `fixed_regs' and `call_used_regs' (both of type `char
583 []') after they have been initialized from the two preceding
586 This is necessary in case the fixed or call-clobbered registers
587 depend on target flags.
589 You need not define this macro if it has no work to do.
591 If the usage of an entire class of registers depends on the target
592 flags, you may indicate this to GCC by using this macro to modify
593 `fixed_regs' and `call_used_regs' to 1 for each of the registers in
594 the classes which should not be used by GCC. Also define the macro
595 `REG_CLASS_FROM_LETTER' to return `NO_REGS' if it is called with a
596 letter for a class that shouldn't be used.
598 (However, if this class is not included in `GENERAL_REGS' and all
599 of the insn patterns whose constraints permit this class are
600 controlled by target switches, then GCC will automatically avoid
601 using these registers when the target switches are opposed to
602 them.) If the user tells us there is no BMU, we can't use
603 ar0-ar3 for register allocation */
605 #define CONDITIONAL_REGISTER_USAGE \
612 for (regno = REG_AR0; regno <= REG_AR3; regno++) \
613 fixed_regs[regno] = call_used_regs[regno] = 1; \
615 if (TARGET_RESERVE_YBASE) \
619 for (regno = REG_YBASE0; regno <= REG_YBASE31; regno++) \
620 fixed_regs[regno] = call_used_regs[regno] = 1; \
625 /* Determine which register classes are very likely used by spill registers.
626 local-alloc.c won't allocate pseudos that have these classes as their
627 preferred class unless they are "preferred or nothing". */
629 #define CLASS_LIKELY_SPILLED_P(CLASS) \
630 ((CLASS) != ALL_REGS && (CLASS) != YBASE_VIRT_REGS)
632 /* Return number of consecutive hard regs needed starting at reg REGNO
633 to hold something of mode MODE.
634 This is ordinarily the length in words of a value of mode MODE
635 but can be less for certain modes in special long registers. */
637 #define HARD_REGNO_NREGS(REGNO, MODE) \
638 (GET_MODE_SIZE(MODE))
640 /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. */
642 #define HARD_REGNO_MODE_OK(REGNO, MODE) hard_regno_mode_ok(REGNO, MODE)
644 /* Value is 1 if it is a good idea to tie two pseudo registers
645 when one has mode MODE1 and one has mode MODE2.
646 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
647 for any hard reg, then this must be 0 for correct output. */
648 #define MODES_TIEABLE_P(MODE1, MODE2) \
649 (((MODE1) == (MODE2)) || \
650 (GET_MODE_CLASS((MODE1)) == MODE_FLOAT) \
651 == (GET_MODE_CLASS((MODE2)) == MODE_FLOAT))
653 /* Specify the registers used for certain standard purposes.
654 The values of these macros are register numbers. */
656 /* DSP1600 pc isn't overloaded on a register. */
657 /* #define PC_REGNUM */
659 /* Register to use for pushing function arguments.
660 This is r3 in our case */
661 #define STACK_POINTER_REGNUM REG_R3
663 /* Base register for access to local variables of the function.
664 This is r2 in our case */
665 #define FRAME_POINTER_REGNUM REG_R2
667 /* We can debug without the frame pointer */
668 #define CAN_DEBUG_WITHOUT_FP 1
670 /* The 1610 saves the return address in this register */
671 #define RETURN_ADDRESS_REGNUM REG_PR
673 /* Base register for access to arguments of the function. */
674 #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM
676 /* Register in which static-chain is passed to a function. */
678 #define STATIC_CHAIN_REGNUM 4
680 /* Register in which address to store a structure value
681 is passed to a function. This is 'r0' in our case */
682 #define STRUCT_VALUE_REGNUM REG_R0
684 /* Define the classes of registers for register constraints in the
685 machine description. Also define ranges of constants.
687 One of the classes must always be named ALL_REGS and include all hard regs.
688 If there is more than one class, another class must be named NO_REGS
689 and contain no registers.
691 The name GENERAL_REGS must be the name of a class (or an alias for
692 another name such as ALL_REGS). This is the class of registers
693 that is allowed by "g" or "r" in a register constraint.
694 Also, registers outside this class are allocated only when
695 instructions express preferences for them.
697 The classes must be numbered in nondecreasing order; that is,
698 a larger-numbered class must never be contained completely
699 in a smaller-numbered class.
701 For any two classes, it is very desirable that there be another
702 class that represents their union. */
721 YH_OR_ACCUM_HIGH_REGS,
724 YL_OR_ACCUM_LOW_REGS,
732 PL_OR_ACCUM_LOW_REGS,
734 YL_OR_PL_OR_ACCUM_LOW_REGS,
738 ACCUM_LOW_OR_YL_OR_P_REGS,
741 NO_FRAME_Y_ADDR_REGS,
743 ACCUM_LOW_OR_Y_ADDR_REGS,
744 ACCUM_OR_Y_ADDR_REGS,
748 NON_HIGH_YBASE_ELIGIBLE_REGS,
751 J_OR_DAU_16_BIT_REGS,
753 NOHIGH_NON_ADDR_REGS,
756 NOHIGH_NON_YBASE_REGS,
757 NO_ACCUM_NON_YBASE_REGS,
760 ACCUM_LOW_OR_YBASE_REGS,
764 ACCUM_LOW_YL_PL_OR_YBASE_REGS,
766 ACCUM_Y_P_OR_YBASE_REGS,
767 Y_ADDR_OR_YBASE_REGS,
768 YBASE_OR_NOHIGH_YBASE_ELIGIBLE_REGS,
769 YBASE_OR_YBASE_ELIGIBLE_REGS,
775 /* GENERAL_REGS must be the name of a register class */
776 #define GENERAL_REGS ALL_REGS
778 #define N_REG_CLASSES (int) LIM_REG_CLASSES
780 /* Give names of register classes as strings for dump file. */
782 #define REG_CLASS_NAMES \
795 "X_OR_ACCUM_LOW_REGS", \
798 "YH_OR_ACCUM_HIGH_REGS", \
801 "YL_OR_ACCUM_LOW_REGS", \
809 "PL_OR_ACCUM_LOW_REGS", \
811 "PL_OR_YL_OR_ACCUM_LOW_REGS", \
815 "ACCUM_LOW_OR_YL_OR_P_REGS", \
817 "ACCUM_Y_OR_P_REGS", \
818 "NO_FRAME_Y_ADDR_REGS", \
820 "ACCUM_LOW_OR_Y_ADDR_REGS", \
821 "ACCUM_OR_Y_ADDR_REGS", \
822 "X_OR_Y_ADDR_REGS", \
823 "Y_OR_Y_ADDR_REGS", \
824 "P_OR_Y_ADDR_REGS", \
825 "NON_HIGH_YBASE_ELIGIBLE_REGS", \
826 "YBASE_ELIGIBLE_REGS", \
828 "J_OR_DAU_16_BIT_REGS", \
830 "NOHIGH_NON_ADDR_REGS", \
832 "SLOW_MEM_LOAD_REGS", \
833 "NOHIGH_NON_YBASE_REGS", \
834 "NO_ACCUM_NON_YBASE_REGS", \
837 "ACCUM_LOW_OR_YBASE_REGS", \
838 "ACCUM_OR_YBASE_REGS", \
841 "ACCUM_LOW_YL_PL_OR_YBASE_REGS", \
843 "ACCUM_Y_P_OR_YBASE_REGS", \
844 "Y_ADDR_OR_YBASE_REGS", \
845 "YBASE_OR_NOHIGH_YBASE_ELIGIBLE_REGS", \
846 "YBASE_OR_YBASE_ELIGIBLE_REGS", \
847 "NO_HIGH_ALL_REGS", \
851 /* Define which registers fit in which classes.
852 This is an initializer for a vector of HARD_REG_SET
853 of length N_REG_CLASSES. */
855 #define REG_CLASS_CONTENTS \
857 {0x00000000, 0x00000000}, /* no reg */ \
858 {0x00000001, 0x00000000}, /* a0h */ \
859 {0x00000002, 0x00000000}, /* a0l */ \
860 {0x00000003, 0x00000000}, /* a0h:a0l */ \
861 {0x00000004, 0x00000000}, /* a1h */ \
862 {0x00000005, 0x00000000}, /* accum high */ \
863 {0x00000008, 0x00000000}, /* a1l */ \
864 {0x0000000A, 0x00000000}, /* accum low */ \
865 {0x0000000c, 0x00000000}, /* a1h:a1l */ \
866 {0x0000000f, 0x00000000}, /* accum regs */ \
867 {0x00000010, 0x00000000}, /* x reg */ \
868 {0x0000001A, 0x00000000}, /* x & accum_low_regs */ \
869 {0x0000001f, 0x00000000}, /* x & accum regs */ \
870 {0x00000020, 0x00000000}, /* y high */ \
871 {0x00000025, 0x00000000}, /* yh, accum high */ \
872 {0x00000030, 0x00000000}, /* x & yh */ \
873 {0x00000040, 0x00000000}, /* y low */ \
874 {0x0000004A, 0x00000000}, /* y low, accum_low */ \
875 {0x00000050, 0x00000000}, /* x & yl */ \
876 {0x00000060, 0x00000000}, /* yl:yh */ \
877 {0x00000070, 0x00000000}, /* x, yh,a nd yl */ \
878 {0x0000006F, 0x00000000}, /* accum, y */ \
879 {0x00000080, 0x00000000}, /* p high */ \
880 {0x00000090, 0x00000000}, /* x & ph */ \
881 {0x00000100, 0x00000000}, /* p low */ \
882 {0x0000010A, 0x00000000}, /* p_low and accum_low */ \
883 {0x00000110, 0x00000000}, /* x & pl */ \
884 {0x0000014A, 0x00000000}, /* pl,yl,a1l,a0l */ \
885 {0x00000180, 0x00000000}, /* pl:ph */ \
886 {0x0000018F, 0x00000000}, /* accum, p */ \
887 {0x000001C0, 0x00000000}, /* pl:ph and yl */ \
888 {0x000001CA, 0x00000000}, /* pl:ph, yl, a0l, a1l */ \
889 {0x000001E0, 0x00000000}, /* y or p */ \
890 {0x000001EF, 0x00000000}, /* accum, y or p */ \
891 {0x00000E00, 0x00000000}, /* r0-r2 */ \
892 {0x00001E00, 0x00000000}, /* r0-r3 */ \
893 {0x00001E0A, 0x00000000}, /* r0-r3, accum_low */ \
894 {0x00001E0F, 0x00000000}, /* accum,r0-r3 */ \
895 {0x00001E10, 0x00000000}, /* x,r0-r3 */ \
896 {0x00001E60, 0x00000000}, /* y,r0-r3 */ \
897 {0x00001F80, 0x00000000}, /* p,r0-r3 */ \
898 {0x00001FDA, 0x00000000}, /* ph:pl, r0-r3, x,a0l,a1l */ \
899 {0x00001fff, 0x00000000}, /* accum,x,y,p,r0-r3 */ \
900 {0x00002000, 0x00000000}, /* j */ \
901 {0x00002025, 0x00000000}, /* j, yh, a1h, a0h */ \
902 {0x001E0000, 0x00000000}, /* ar0-ar3 */ \
903 {0x03FFE1DA, 0x00000000}, /* non_addr except yh,a0h,a1h */ \
904 {0x03FFE1FF, 0x00000000}, /* non_addr regs */ \
905 {0x03FFFF8F, 0x00000000}, /* non ybase except yh, yl, and x */ \
906 {0x03FFFFDA, 0x00000000}, /* non ybase regs except yh,a0h,a1h */ \
907 {0x03FFFFF0, 0x00000000}, /* non ybase except a0,a0l,a1,a1l */ \
908 {0x03FFFFFF, 0x00000000}, /* non ybase regs */ \
909 {0xFC000000, 0x03FFFFFF}, /* virt ybase regs */ \
910 {0xFC00000A, 0x03FFFFFF}, /* accum_low, virt ybase regs */ \
911 {0xFC00000F, 0x03FFFFFF}, /* accum, virt ybase regs */ \
912 {0xFC000010, 0x03FFFFFF}, /* x,virt ybase regs */ \
913 {0xFC000060, 0x03FFFFFF}, /* y,virt ybase regs */ \
914 {0xFC00014A, 0x03FFFFFF}, /* accum_low, yl, pl, ybase */ \
915 {0xFC000180, 0x03FFFFFF}, /* p,virt ybase regs */ \
916 {0xFC0001EF, 0x03FFFFFF}, /* accum,y,p,ybase regs */ \
917 {0xFC001E00, 0x03FFFFFF}, /* r0-r3, ybase regs */ \
918 {0xFC001FDA, 0x03FFFFFF}, /* r0-r3, pl:ph,yl,x,a1l,a0l */ \
919 {0xFC001FFF, 0x03FFFFFF}, /* virt ybase, ybase eligible regs */ \
920 {0xFCFFFFDA, 0x03FFFFFF}, /* all regs except yh,a0h,a1h */ \
921 {0xFFFFFFFF, 0x03FFFFFF} /* all regs */ \
925 /* The same information, inverted:
926 Return the class number of the smallest class containing
927 reg number REGNO. This could be a conditional expression
928 or could index an array. */
930 #define REGNO_REG_CLASS(REGNO) regno_reg_class(REGNO)
932 /* The class value for index registers, and the one for base regs. */
934 #define INDEX_REG_CLASS NO_REGS
935 #define BASE_REG_CLASS Y_ADDR_REGS
937 /* Get reg_class from a letter such as appears in the machine description. */
939 #define REG_CLASS_FROM_LETTER(C) \
940 dsp16xx_reg_class_from_letter(C)
942 #define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \
943 secondary_reload_class(CLASS, MODE, X)
945 /* When defined, the compiler allows registers explicitly used in the
946 rtl to be used as spill registers but prevents the compiler from
947 extending the lifetime of these registers. */
949 #define SMALL_REGISTER_CLASSES
951 /* Macros to check register numbers against specific register classes. */
953 /* These assume that REGNO is a hard or pseudo reg number.
954 They give nonzero only if REGNO is a hard reg of the suitable class
955 or a pseudo reg currently allocated to a suitable hard reg.
956 Since they use reg_renumber, they are safe only once reg_renumber
957 has been allocated, which happens in local-alloc.c. */
959 /* A C expression which is nonzero if register REGNO is suitable for use
960 as a base register in operand addresses. It may be either a suitable
961 hard register or a pseudo register that has been allocated such a
964 On the 1610 the Y address pointers can be used as a base registers */
965 #define REGNO_OK_FOR_BASE_P(REGNO) \
966 (((REGNO) >= REG_R0 && (REGNO) < REG_R3 + 1) || ((unsigned) reg_renumber[REGNO] >= REG_R0 \
967 && (unsigned) reg_renumber[REGNO] < REG_R3 + 1))
969 #define REGNO_OK_FOR_YBASE_P(REGNO) \
970 (((REGNO) == REG_YBASE) || ((unsigned) reg_renumber[REGNO] == REG_YBASE))
972 #define REGNO_OK_FOR_INDEX_P(REGNO) 0
974 #ifdef ALL_16_BIT_REGISTERS
975 #define IS_32_BIT_REG(REGNO) 0
977 #define IS_32_BIT_REG(REGNO) \
978 ((REGNO) == REG_A0 || (REGNO) == REG_A1 || (REGNO) == REG_Y || (REGNO) == REG_PROD)
981 /* Given an rtx X being reloaded into a reg required to be
982 in class CLASS, return the class of reg to actually use.
983 In general this is just CLASS; but on some machines
984 in some cases it is preferable to use a more restrictive class.
985 Also, we must ensure that a PLUS is reloaded either
986 into an accumulator or an address register. */
988 #define PREFERRED_RELOAD_CLASS(X,CLASS) preferred_reload_class (X, CLASS)
990 /* A C expression that places additional restrictions on the register
991 class to use when it is necessary to be able to hold a value of
992 mode MODE in a reload register for which class CLASS would
995 Unlike `PREFERRED_RELOAD_CLASS', this macro should be used when
996 there are certain modes that simply can't go in certain reload
999 The value is a register class; perhaps CLASS, or perhaps another,
1002 Don't define this macro unless the target machine has limitations
1003 which require the macro to do something nontrivial. */
1006 #define LIMIT_RELOAD_CLASS(MODE, CLASS) dsp16xx_limit_reload_class (MODE, CLASS)
1009 /* A C expression for the maximum number of consecutive registers of class CLASS
1010 needed to hold a value of mode MODE */
1011 #define CLASS_MAX_NREGS(CLASS, MODE) \
1012 class_max_nregs(CLASS, MODE)
1014 /* The letters 'I' through 'P' in a register constraint string
1015 can be used to stand for particular ranges of immediate operands.
1016 This macro defines what the ranges are.
1017 C is the letter, and VALUE is a constant value.
1018 Return 1 if VALUE is in the range specified by C.
1020 For the 16xx, the following constraints are used:
1021 'I' requires a non-negative 16-bit value.
1022 'J' requires a non-negative 9-bit value
1023 'K' requires a constant 0 operand.
1024 'L' requires 16-bit value
1025 'M' 32-bit value -- low 16-bits zero
1028 #define SMALL_INT(X) (SMALL_INTVAL (INTVAL (X)))
1029 #define SMALL_INTVAL(I) ((unsigned) (I) < 0x10000)
1030 #define SHORT_IMMEDIATE(X) (SHORT_INTVAL (INTVAL(X)))
1031 #define SHORT_INTVAL(I) ((unsigned) (I) < 0x100)
1033 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
1034 ((C) == 'I' ? (SMALL_INTVAL(VALUE)) \
1035 : (C) == 'J' ? (SHORT_INTVAL(VALUE)) \
1036 : (C) == 'K' ? ((VALUE) == 0) \
1037 : (C) == 'L' ? ! ((VALUE) & ~0x0000ffff) \
1038 : (C) == 'M' ? ! ((VALUE) & ~0xffff0000) \
1039 : (C) == 'N' ? ((VALUE) == -1 || (VALUE) == 1 || \
1040 (VALUE) == -2 || (VALUE) == 2) \
1043 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) 1
1045 /* Optional extra constraints for this machine */
1046 #define EXTRA_CONSTRAINT(OP,C) \
1047 ((C) == 'R' ? symbolic_address_p (OP) \
1050 /* DESCRIBING STACK LAYOUT AND CALLING CONVENTIONS */
1052 /* Define this if pushing a word on the stack
1053 makes the stack pointer a smaller address. */
1054 /* #define STACK_GROWS_DOWNWARD */
1056 /* Define this if the nominal address of the stack frame
1057 is at the high-address end of the local variables;
1058 that is, each additional local variable allocated
1059 goes at a more negative offset in the frame. */
1060 /* #define FRAME_GROWS_DOWNWARD */
1062 #define ARGS_GROW_DOWNWARD
1064 /* We use post decrement on the 1600 because there isn't
1065 a pre-decrement addressing mode. This means that we
1066 assume the stack pointer always points at the next
1067 FREE location on the stack. */
1068 #define STACK_PUSH_CODE POST_INC
1070 /* Offset within stack frame to start allocating local variables at.
1071 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
1072 first local allocated. Otherwise, it is the offset to the BEGINNING
1073 of the first local allocated. */
1074 #define STARTING_FRAME_OFFSET 0
1076 /* Offset from the stack pointer register to the first
1077 location at which outgoing arguments are placed. */
1078 #define STACK_POINTER_OFFSET (0)
1080 struct dsp16xx_frame_info
1082 unsigned long total_size; /* # bytes that the entire frame takes up */
1083 unsigned long var_size; /* # bytes that variables take up */
1084 unsigned long args_size; /* # bytes that outgoing arguments take up */
1085 unsigned long extra_size; /* # bytes of extra gunk */
1086 unsigned int reg_size; /* # bytes needed to store regs */
1087 long fp_save_offset; /* offset from vfp to store registers */
1088 unsigned long sp_save_offset; /* offset from new sp to store registers */
1089 int initialized; /* != 0 if frame size already calculated */
1090 int num_regs; /* number of registers saved */
1091 int function_makes_calls; /* Does the function make calls */
1094 extern struct dsp16xx_frame_info current_frame_info;
1096 /* If we generate an insn to push BYTES bytes,
1097 this says how many the stack pointer really advances by. */
1098 /* #define PUSH_ROUNDING(BYTES) ((BYTES)) */
1100 /* If defined, the maximum amount of space required for outgoing
1101 arguments will be computed and placed into the variable
1102 'current_function_outgoing_args_size'. No space will be pushed
1103 onto the stack for each call; instead, the function prologue should
1104 increase the stack frame size by this amount.
1106 It is not proper to define both 'PUSH_ROUNDING' and
1107 'ACCUMULATE_OUTGOING_ARGS'. */
1108 #define ACCUMULATE_OUTGOING_ARGS
1110 /* Offset of first parameter from the argument pointer
1113 #define FIRST_PARM_OFFSET(FNDECL) (0)
1115 /* Value is 1 if returning from a function call automatically
1116 pops the arguments described by the number-of-args field in the call.
1117 FUNDECL is the declaration node of the function (as a tree),
1118 FUNTYPE is the data type of the function (as a tree),
1119 or for a library call it is an identifier node for the subroutine name. */
1121 #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
1123 /* Define how to find the value returned by a function.
1124 VALTYPE is the data type of the value (as a tree).
1125 If the precise function being called is known, FUNC is its FUNCTION_DECL;
1126 otherwise, FUNC is 0. On the 1610 all function return their values
1127 in a0 (i.e. the upper 16 bits). If the return value is 32-bits the
1128 entire register is significant. */
1130 #define VALUE_REGNO(MODE) (REG_Y)
1132 #define FUNCTION_VALUE(VALTYPE, FUNC) \
1133 gen_rtx (REG, TYPE_MODE (VALTYPE), VALUE_REGNO(TYPE_MODE(VALTYPE)))
1135 /* Define how to find the value returned by a library function
1136 assuming the value has mode MODE. */
1137 #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, VALUE_REGNO(MODE))
1139 /* 1 if N is a possible register number for a function value. */
1140 #define FUNCTION_VALUE_REGNO_P(N) ((N) == REG_Y)
1143 /* Define where to put the arguments to a function.
1144 Value is zero to push the argument on the stack,
1145 or a hard register in which to store the argument.
1147 MODE is the argument's machine mode.
1148 TYPE is the data type of the argument (as a tree).
1149 This is null for libcalls where that information may
1151 CUM is a variable of type CUMULATIVE_ARGS which gives info about
1152 the preceding args and about the function being called.
1153 NAMED is nonzero if this argument is a named parameter
1154 (otherwise it is an extra parameter matching an ellipsis). */
1156 /* On the 1610 all args are pushed, except if -mregparm is specified
1157 then the first two words of arguments are passed in a0, a1. */
1158 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
1159 dsp16xx_function_arg (CUM, MODE, TYPE, NAMED)
1161 /* Define the first register to be used for argument passing */
1162 #define FIRST_REG_FOR_FUNCTION_ARG REG_Y
1164 /* Define the profitability of saving registers around calls.
1165 NOTE: For now we turn this off because of a bug in the
1166 caller-saves code and also because i'm not sure it is helpful
1169 #define CALLER_SAVE_PROFITABLE(REFS,CALLS) 0
1171 /* This indicates that an argument is to be passed with an invisible reference
1172 (i.e., a pointer to the object is passed).
1174 On the dsp16xx, we do this if it must be passed on the stack. */
1176 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
1177 (MUST_PASS_IN_STACK (MODE, TYPE))
1179 /* For an arg passed partly in registers and partly in memory,
1180 this is the number of registers used.
1181 For args passed entirely in registers or entirely in memory, zero. */
1183 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) (0)
1185 /* Define a data type for recording info about an argument list
1186 during the scan of that argument list. This data type should
1187 hold all necessary information about the function itself
1188 and about the args processed so far, enough to enable macros
1189 such as FUNCTION_ARG to determine where the next arg should go. */
1190 #define CUMULATIVE_ARGS int
1192 /* Initialize a variable CUM of type CUMULATIVE_ARGS
1193 for a call to a function whose data type is FNTYPE.
1194 For a library call, FNTYPE is 0. */
1195 #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) ((CUM) = 0)
1197 /* Update the data in CUM to advance over an argument
1198 of mode MODE and data type TYPE.
1199 (TYPE is null for libcalls where that information may not be available.) */
1201 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
1202 dsp16xx_function_arg_advance (&CUM, MODE,TYPE, NAMED)
1204 /* 1 if N is a possible register number for function argument passing. */
1205 #define FUNCTION_ARG_REGNO_P(N) \
1206 ((N) == REG_Y || (N) == REG_YL || (N) == REG_PROD || (N) == REG_PRODL)
1208 /* This macro generates the assembly code for function entry.
1209 FILE is a stdio stream to output the code to.
1210 SIZE is an int: how many units of temporary storage to allocate.
1211 Refer to the array `regs_ever_live' to determine which registers
1212 to save; `regs_ever_live[I]' is nonzero if register number I
1213 is ever used in the function. This macro is responsible for
1214 knowing which registers should not be saved even if used. */
1216 #define FUNCTION_PROLOGUE(FILE, SIZE) function_prologue(FILE, SIZE)
1218 /* Output assembler code to FILE to increment profiler label # LABELNO
1219 for profiling a function entry. */
1221 #define FUNCTION_PROFILER(FILE, LABELNO) fatal("Profiling not implemented yet.")
1223 /* Output assembler code to FILE to initialize this source file's
1224 basic block profiling info, if that has not already been done. */
1225 #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) fatal("Profiling not implemented yet.")
1227 /* Output assembler code to FILE to increment the entry-count for
1228 the BLOCKNO'th basic block in this source file. */
1229 #define BLOCK_PROFILER(FILE, BLOCKNO) fatal("Profiling not implemented yet.")
1232 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1233 the stack pointer does not matter. The value is tested only in
1234 functions that have frame pointers.
1235 No definition is equivalent to always zero. */
1237 #define EXIT_IGNORE_STACK (0)
1239 #define TRAMPOLINE_TEMPLATE(FILE) fatal ("Trampolines not yet implemented");
1241 /* Length in units of the trampoline for entering a nested function.
1242 This is a dummy value */
1244 #define TRAMPOLINE_SIZE 20
1246 /* Emit RTL insns to initialize the variable parts of a trampoline.
1247 FNADDR is an RTX for the address of the function's pure code.
1248 CXT is an RTX for the static chain value for the function. */
1250 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
1251 fatal ("Trampolines not yet implemented");
1253 /* This macro generates the assembly code for function exit,
1254 on machines that need it. If FUNCTION_EPILOGUE is not defined
1255 then individual return instructions are generated for each
1256 return statement. Args are same as for FUNCTION_PROLOGUE.
1258 The function epilogue should not depend on the current stack pointer!
1259 It should use the frame pointer only. This is mandatory because
1260 of alloca; we also take advantage of it to omit stack adjustments
1261 before returning. */
1263 #define FUNCTION_EPILOGUE(FILE, SIZE) function_epilogue(FILE, SIZE)
1265 /* A C expression which is nonzero if a function must have and use a
1266 frame pointer. If its value is nonzero the functions will have a
1268 #define FRAME_POINTER_REQUIRED (current_function_calls_alloca)
1270 /* A C statement to store in the variable 'DEPTH' the difference
1271 between the frame pointer and the stack pointer values immediately
1272 after the function prologue. */
1273 #define INITIAL_FRAME_POINTER_OFFSET(DEPTH) \
1274 { (DEPTH) = initial_frame_pointer_offset(); \
1277 /* IMPLICIT CALLS TO LIBRARY ROUTINES */
1279 #define ADDHF3_LIBCALL "__Emulate_addhf3"
1280 #define SUBHF3_LIBCALL "__Emulate_subhf3"
1281 #define MULHF3_LIBCALL "__Emulate_mulhf3"
1282 #define DIVHF3_LIBCALL "__Emulate_divhf3"
1283 #define CMPHF3_LIBCALL "__Emulate_cmphf3"
1284 #define FIXHFHI2_LIBCALL "__Emulate_fixhfhi2"
1285 #define FLOATHIHF2_LIBCALL "__Emulate_floathihf2"
1286 #define NEGHF2_LIBCALL "__Emulate_neghf2"
1288 #define UMULHI3_LIBCALL "__Emulate_umulhi3"
1289 #define MULHI3_LIBCALL "__Emulate_mulhi3"
1290 #define UDIVQI3_LIBCALL "__Emulate_udivqi3"
1291 #define UDIVHI3_LIBCALL "__Emulate_udivhi3"
1292 #define DIVQI3_LIBCALL "__Emulate_divqi3"
1293 #define DIVHI3_LIBCALL "__Emulate_divhi3"
1294 #define MODQI3_LIBCALL "__Emulate_modqi3"
1295 #define MODHI3_LIBCALL "__Emulate_modhi3"
1296 #define UMODQI3_LIBCALL "__Emulate_umodqi3"
1297 #define UMODHI3_LIBCALL "__Emulate_umodhi3"
1298 #define ASHRHI3_LIBCALL "__Emulate_ashrhi3"
1299 #define LSHRHI3_LIBCALL "__Emulate_lshrhi3"
1300 #define ASHLHI3_LIBCALL "__Emulate_ashlhi3"
1301 #define LSHLHI3_LIBCALL "__Emulate_lshlhi3" /* NOT USED */
1303 /* Define this macro if calls to the ANSI C library functions memcpy and
1304 memset should be generated instead of the BSD function bcopy & bzero. */
1305 #define TARGET_MEM_FUNCTIONS
1308 /* ADDRESSING MODES */
1310 /* The 1610 has post-increment and decrement, but no pre-modify */
1311 #define HAVE_POST_INCREMENT
1312 #define HAVE_POST_DECREMENT
1314 /* #define HAVE_PRE_DECREMENT */
1315 /* #define HAVE_PRE_INCREMENT */
1317 /* Recognize any constant value that is a valid address. */
1318 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
1320 /* Maximum number of registers that can appear in a valid memory address. */
1321 #define MAX_REGS_PER_ADDRESS 1
1323 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
1324 and check its validity for a certain class.
1325 We have two alternate definitions for each of them.
1326 The usual definition accepts all pseudo regs; the other rejects
1327 them unless they have been allocated suitable hard regs.
1328 The symbol REG_OK_STRICT causes the latter definition to be used.
1330 Most source files want to accept pseudo regs in the hope that
1331 they will get allocated to the class that the insn wants them to be in.
1332 Source files for reload pass need to be strict.
1333 After reload, it makes no difference, since pseudo regs have
1334 been eliminated by then. */
1336 #ifndef REG_OK_STRICT
1338 /* Nonzero if X is a hard reg that can be used as an index
1339 or if it is a pseudo reg. */
1340 #define REG_OK_FOR_INDEX_P(X) 0
1342 /* Nonzero if X is a hard reg that can be used as a base reg
1343 or if it is a pseudo reg. */
1344 #define REG_OK_FOR_BASE_P(X) \
1345 ((REGNO (X) >= REG_R0 && REGNO (X) < REG_R3 + 1 ) \
1346 || (REGNO (X) >= FIRST_PSEUDO_REGISTER))
1348 /* Nonzero if X is the 'ybase' register */
1349 #define REG_OK_FOR_YBASE_P(X) \
1350 (REGNO(X) == REG_YBASE || (REGNO (X) >= FIRST_PSEUDO_REGISTER))
1353 /* Nonzero if X is a hard reg that can be used as an index. */
1354 #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
1356 /* Nonzero if X is a hard reg that can be used as a base reg. */
1357 #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
1359 /* Nonzero if X is the 'ybase' register */
1360 #define REG_OK_FOR_YBASE_P(X) REGNO_OK_FOR_YBASE_P (REGNO(X))
1364 /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
1365 that is a valid memory address for an instruction.
1366 The MODE argument is the machine mode for the MEM expression
1367 that wants to use this address.
1369 On the 1610, the actual legitimate addresses must be N (N must fit in
1370 5 bits), *rn (register indirect), *rn++, or *rn-- */
1372 #define INT_FITS_5_BITS(I) ((unsigned long) (I) < 0x20)
1373 #define INT_FITS_16_BITS(I) ((unsigned long) (I) < 0x10000)
1374 #define YBASE_CONST_OFFSET(I) ((I) >= -31 && (I) <= 0)
1375 #define YBASE_OFFSET(X) (GET_CODE (X) == CONST_INT && YBASE_CONST_OFFSET (INTVAL(X)))
1377 #define FITS_16_BITS(X) (GET_CODE (X) == CONST_INT && INT_FITS_16_BITS(INTVAL(X)))
1378 #define FITS_5_BITS(X) (GET_CODE (X) == CONST_INT && INT_FITS_5_BITS(INTVAL(X)))
1379 #define ILLEGAL_HIMODE_ADDR(MODE, CONST) ((MODE) == HImode && CONST == -31)
1381 #define INDIRECTABLE_ADDRESS_P(X) \
1382 ((GET_CODE(X) == REG && REG_OK_FOR_BASE_P(X)) \
1383 || ((GET_CODE(X) == POST_DEC || GET_CODE(X) == POST_INC) \
1384 && REG_P(XEXP(X,0)) && REG_OK_FOR_BASE_P(XEXP(X,0))) \
1385 || (GET_CODE(X) == CONST_INT && (unsigned long) (X) < 0x20))
1388 #define INDEXABLE_ADDRESS_P(X,MODE) \
1389 ((GET_CODE(X) == PLUS && GET_CODE (XEXP (X,0)) == REG && \
1390 XEXP(X,0) == stack_pointer_rtx && YBASE_OFFSET(XEXP(X,1)) && \
1391 !ILLEGAL_HIMODE_ADDR(MODE, INTVAL(XEXP(X,1)))) || \
1392 (GET_CODE(X) == PLUS && GET_CODE (XEXP (X,1)) == REG && \
1393 XEXP(X,1) == stack_pointer_rtx && YBASE_OFFSET(XEXP(X,0)) && \
1394 !ILLEGAL_HIMODE_ADDR(MODE, INTVAL(XEXP(X,0)))))
1396 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
1398 if (INDIRECTABLE_ADDRESS_P(X)) \
1403 /* Try machine-dependent ways of modifying an illegitimate address
1404 to be legitimate. If we find one, return the new, valid address.
1405 This macro is used in only one place: `memory_address' in explow.c.
1407 OLDX is the address as it was before break_out_memory_refs was called.
1408 In some cases it is useful to look at this to decide what needs to be done.
1410 MODE and WIN are passed so that this macro can use
1411 GO_IF_LEGITIMATE_ADDRESS.
1413 It is always safe for this macro to do nothing. It exists to recognize
1414 opportunities to optimize the output.
1416 For the 1610, we need not do anything. However, if we don't,
1417 `memory_address' will try lots of things to get a valid address, most of
1418 which will result in dead code and extra pseudos. So we make the address
1421 This is easy: The only valid addresses are an offset from a register
1422 and we know the address isn't valid. So just call either `force_operand'
1423 or `force_reg' unless this is a (plus (reg ...) (const_int 0)). */
1425 #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
1426 { if (GET_CODE (X) == PLUS && XEXP (X, 1) == const0_rtx) \
1428 if (GET_CODE (X) == MULT || GET_CODE (X) == PLUS) \
1429 X = force_operand (X, 0); \
1431 X = force_reg (Pmode, X); \
1435 /* Go to LABEL if ADDR (a legitimate address expression)
1436 has an effect that depends on the machine mode it is used for.
1437 On the 1610, only postdecrement and postincrement address depend thus
1438 (the amount of decrement or increment being the length of the operand). */
1440 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
1441 if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == POST_DEC) goto LABEL
1443 /* Nonzero if the constant value X is a legitimate general operand.
1444 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
1445 #define LEGITIMATE_CONSTANT_P(X) (1)
1448 /* CONDITION CODE INFORMATION */
1450 /* Store in cc_status the expressions
1451 that the condition codes will describe
1452 after execution of an instruction whose pattern is EXP.
1453 Do not alter them if the instruction would not alter the cc's. */
1455 #define NOTICE_UPDATE_CC(EXP, INSN) \
1456 notice_update_cc( (EXP) )
1458 /* DESCRIBING RELATIVE COSTS OF OPERATIONS */
1460 /* Compute the cost of computing a constant rtl expression RTX
1461 whose rtx-code is CODE. The body of this macro is a portion
1462 of a switch statement. If the code is computed here,
1463 return it with a return statement. */
1464 #define CONST_COSTS(RTX,CODE,OUTER_CODE) \
1470 return COSTS_N_INSNS (1); \
1472 case CONST_DOUBLE: \
1473 return COSTS_N_INSNS (2);
1475 /* Like CONST_COSTS but applies to nonconstant RTL expressions.
1476 This can be used, for example to indicate how costly a multiply
1478 #define RTX_COSTS(X,CODE,OUTER_CODE) \
1480 return GET_MODE (X) == QImode ? COSTS_N_INSNS (2) : \
1481 COSTS_N_INSNS (4); \
1484 return COSTS_N_INSNS (38); \
1486 if (GET_MODE (X) == QImode) \
1487 return COSTS_N_INSNS (2); \
1489 return COSTS_N_INSNS (38); \
1491 if (GET_MODE_CLASS (GET_MODE (X)) == MODE_INT) \
1493 if (GET_CODE (XEXP (X,1)) == CONST_INT) \
1495 int number = INTVAL(XEXP (X,1)); \
1497 return COSTS_N_INSNS (1); \
1498 if (INT_FITS_16_BITS(number)) \
1499 return COSTS_N_INSNS (2); \
1501 return COSTS_N_INSNS (4); \
1503 return COSTS_N_INSNS (1); \
1506 return COSTS_N_INSNS (38); \
1508 if (GET_MODE_CLASS (GET_MODE (X)) == MODE_INT) \
1510 if (GET_CODE (XEXP (X,1)) == CONST_INT) \
1512 if (INT_FITS_16_BITS(INTVAL(XEXP(X,1)))) \
1513 return COSTS_N_INSNS (2); \
1515 return COSTS_N_INSNS (4); \
1517 return COSTS_N_INSNS (1); \
1520 return COSTS_N_INSNS (38); \
1521 case AND: case IOR: case XOR: \
1522 if (GET_CODE (XEXP (X,1)) == CONST_INT) \
1524 if (INT_FITS_16_BITS(INTVAL(XEXP(X,1)))) \
1525 return COSTS_N_INSNS (2); \
1527 return COSTS_N_INSNS (4); \
1529 return COSTS_N_INSNS (1); \
1530 case NEG: case NOT: \
1531 return COSTS_N_INSNS (1); \
1535 if (GET_CODE (XEXP (X,1)) == CONST_INT) \
1537 int number = INTVAL(XEXP (X,1)); \
1538 if (number == 1 || number == 4 || number == 8 || \
1540 return COSTS_N_INSNS (1); \
1542 return COSTS_N_INSNS (2); \
1544 return COSTS_N_INSNS (1);
1546 /* An expression giving the cost of an addressing mode that contains
1548 #define ADDRESS_COST(ADDR) dsp16xx_address_cost (ADDR)
1550 /* A c expression for the cost of moving data from a register in
1551 class FROM to one in class TO. The classes are expressed using
1552 the enumeration values such as GENERAL_REGS. A value of 2 is
1554 #define REGISTER_MOVE_COST(FROM,TO) dsp16xx_register_move_cost (FROM, TO)
1556 /* A C expression for the cost of moving data of mode MODE between
1557 a register and memory. A value of 2 is the default. */
1558 #define MEMORY_MOVE_COST(MODE) \
1559 (GET_MODE_CLASS(MODE) == MODE_INT && MODE == QImode ? 12 \
1562 /* A C expression for the cost of a branch instruction. A value of
1563 1 is the default; */
1564 #define BRANCH_COST 2
1567 /* Define this because otherwise gcc will try to put the function address
1568 in any old pseudo register. We can only use pt. */
1569 #define NO_FUNCTION_CSE
1571 /* Define this macro as a C expression which is nonzero if accessing less
1572 than a word of memory (i.e a char or short) is no faster than accessing
1573 a word of memory, i.e if such access require more than one instruction
1574 or if ther is no difference in cost between byte and (aligned) word
1576 #define SLOW_BYTE_ACCESS 1
1578 /* Define this macro if zero-extension (of a char or short to an int) can
1579 be done faster if the destination is a register that is know to be zero. */
1580 /* #define SLOW_ZERO_EXTEND */
1582 /* Define this macro if unaligned accesses have a cost many times greater than
1583 aligned accesses, for example if they are emulated in a trap handler */
1584 /* define SLOW_UNALIGNED_ACCESS */
1586 /* Define this macro to inhibit strength reduction of memory addresses */
1587 /* #define DONT_REDUCE_ADDR */
1590 /* DIVIDING THE OUTPUT IN SECTIONS */
1591 /* Output before read-only data. */
1593 #define DEFAULT_TEXT_SEG_NAME ".text"
1594 #define TEXT_SECTION_ASM_OP rsect_text
1596 /* Output before constants and strings */
1597 #define DEFAULT_CONST_SEG_NAME ".const"
1598 #define READONLY_SECTION_ASM_OP rsect_const
1599 #define READONLY_DATA_SECTION const_section
1601 /* Output before writable data. */
1602 #define DEFAULT_DATA_SEG_NAME ".data"
1603 #define DATA_SECTION_ASM_OP rsect_data
1605 #define DEFAULT_BSS_SEG_NAME ".bss"
1606 #define BSS_SECTION_ASM_OP rsect_bss
1608 /* We will default to using 1610 if the user doesn't
1610 #define DEFAULT_CHIP_NAME "1610"
1612 /* A list of names for sections other than the standard ones, which are
1613 'in_text' and 'in_data' (and .bss if BSS_SECTION_ASM_OP is defined). */
1614 #define EXTRA_SECTIONS in_const
1616 #define EXTRA_SECTION_FUNCTIONS \
1620 if (in_section != in_const) \
1622 fprintf (asm_out_file, "%s\n", READONLY_SECTION_ASM_OP); \
1623 in_section = in_const; \
1627 /* THE OVERALL FRAMEWORK OF AN ASSEMBLER FILE */
1629 /* Output at beginning of assembler file. */
1630 #define ASM_FILE_START(FILE) dsp16xx_file_start ()
1632 /* Prevent output of .gcc_compiled */
1633 #define ASM_IDENTIFY_GCC(FILE)
1635 /* A C string constant describing how to begin a comment in the target
1636 assembler language. */
1637 /* define ASM_COMMENT_START */
1639 /* Output to assembler file text saying following lines
1640 may contain character constants, extra white space, comments, etc. */
1641 #define ASM_APP_ON ""
1643 /* Output to assembler file text saying following lines
1644 no longer contain unusual constructs. */
1645 #define ASM_APP_OFF ""
1647 /* OUTPUT OF DATA */
1649 /* This is how to output an assembler line defining a `double' constant. */
1650 #define ASM_OUTPUT_DOUBLE(FILE,VALUE) asm_output_float (FILE,VALUE)
1652 /* This is how to output an assembler line defining a `float' constant. */
1653 #define ASM_OUTPUT_FLOAT(FILE,VALUE) asm_output_float (FILE, VALUE)
1655 /* This is how to output and assembler line defininf a 'float' constant of
1657 #define ASM_OUTPUT_SHORT_FLOAT(FILE,VALUE) asm_output_float (FILE, VALUE)
1659 /* This is how to output an assembler line defining an `char' constant. */
1660 #define ASM_OUTPUT_CHAR(FILE,VALUE) \
1661 ( fprintf (FILE, "\tint "), \
1662 output_addr_const (FILE, (VALUE)), \
1663 fprintf (FILE, "\n"))
1665 /* This is how to output an assembler line defining an `short' constant. */
1666 #define ASM_OUTPUT_SHORT(FILE,EXP) asm_output_long(FILE,INTVAL(EXP))
1668 /* This is how to output an assembler line defining a 'int' constant. */
1669 #define ASM_OUTPUT_INT(FILE, EXP) asm_output_long(FILE,INTVAL(EXP))
1671 /* This is how to output an assembler line for a numeric constant byte. */
1672 #define ASM_OUTPUT_BYTE(FILE,VALUE) ASM_OUTPUT_CHAR(FILE,VALUE)
1674 /* This is how we output a 'c' character string. For the 16xx
1675 assembler we have to do it one letter at a time */
1677 #define ASCII_LENGTH 10
1679 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
1681 FILE *_hide_asm_out_file = (MYFILE); \
1682 unsigned char *_hide_p = (unsigned char *) (MYSTRING); \
1683 int _hide_thissize = (MYLENGTH); \
1685 FILE *asm_out_file = _hide_asm_out_file; \
1686 unsigned char *p = _hide_p; \
1687 int thissize = _hide_thissize; \
1690 for (i = 0; i < thissize; i++) \
1692 register int c = p[i]; \
1694 if (i % ASCII_LENGTH == 0) \
1695 fprintf (asm_out_file, "\tint "); \
1697 if (c >= ' ' && c < 0177 && c != '\'') \
1699 putc ('\'', asm_out_file); \
1700 putc (c, asm_out_file); \
1701 putc ('\'', asm_out_file); \
1705 fprintf (asm_out_file, "%d", c); \
1706 /* After an octal-escape, if a digit follows, \
1707 terminate one string constant and start another. \
1708 The Vax assembler fails to stop reading the escape \
1709 after three digits, so this is the only way we \
1710 can get it to parse the data properly. \
1711 if (i < thissize - 1 \
1712 && p[i + 1] >= '0' && p[i + 1] <= '9') \
1713 fprintf (asm_out_file, "\'\n\tint \'"); \
1717 we are not at the last char (i != thissize -1) \
1718 and (we are not at a line break multiple \
1719 but i == 0) (it will be the very first time) \
1720 then put out a comma to extend. \
1722 if ((i != thissize - 1) && ((i + 1) % ASCII_LENGTH)) \
1723 fprintf(asm_out_file, ","); \
1724 if (!((i + 1) % ASCII_LENGTH)) \
1725 fprintf (asm_out_file, "\n"); \
1727 fprintf (asm_out_file, "\n"); \
1732 /* Store in OUTPUT a string (made with alloca) containing
1733 an assembler-name for a local static variable or function
1734 named NAME. LABELNO is an integer which is different for
1737 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
1739 int len = strlen (NAME); \
1740 char *temp = (char *) alloca (len + 3); \
1742 strcpy (&temp[1], (NAME)); \
1743 temp[len + 1] = '_'; \
1744 temp[len + 2] = 0; \
1745 (OUTPUT) = (char *) alloca (strlen (NAME) + 11); \
1746 ASM_GENERATE_INTERNAL_LABEL (OUTPUT, temp, LABELNO); \
1749 #define ASM_OPEN_PAREN "("
1750 #define ASM_CLOSE_PAREN ")"
1753 /* OUTPUT OF UNINITIALIZED VARIABLES */
1755 /* This says how to output an assembler line
1756 to define a global common symbol. */
1758 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1759 asm_output_common (FILE, NAME, SIZE, ROUNDED);
1761 /* This says how to output an assembler line
1762 to define a local common symbol. */
1764 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
1765 asm_output_local (FILE, NAME, SIZE, ROUNDED);
1767 /* OUTPUT AND GENERATION OF LABELS */
1769 /* This is how to output the definition of a user-level label named NAME,
1770 such as the label on a static function or variable NAME. */
1771 #define ASM_OUTPUT_LABEL(FILE,NAME) \
1772 do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
1774 /* This is how to output a command to make the user-level label named NAME
1775 defined for reference from other files. */
1777 #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
1778 do { fputs (".global ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
1780 /* A C statement to output to the stdio stream any text necessary
1781 for declaring the name of an external symbol named name which
1782 is referenced in this compilation but not defined. */
1784 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
1786 fprintf (FILE, ".extern "); \
1787 assemble_name (FILE, NAME); \
1788 fprintf (FILE, "\n"); \
1790 /* A C statement to output on stream an assembler pseudo-op to
1791 declare a library function named external. */
1793 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
1795 fprintf (FILE, ".extern "); \
1796 assemble_name (FILE, XSTR (FUN, 0)); \
1797 fprintf (FILE, "\n"); \
1800 /* The prefix to add to user-visible assembler symbols. */
1802 #define USER_LABEL_PREFIX "_"
1804 /* This is how to output an internal numbered label where
1805 PREFIX is the class of label and NUM is the number within the class. */
1806 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
1807 fprintf (FILE, "%s%d:\n", PREFIX, NUM)
1809 /* This is how to store into the string LABEL
1810 the symbol_ref name of an internal numbered label where
1811 PREFIX is the class of label and NUM is the number within the class.
1812 This is suitable for output with `assemble_name'. */
1813 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
1814 sprintf (LABEL, "*%s%d", PREFIX, NUM)
1817 /* OUTPUT OF ASSEMBLER INSTRUCTIONS */
1819 /* How to refer to registers in assembler output.
1820 This sequence is indexed by compiler's hard-register-number (see above). */
1822 #define REGISTER_NAMES \
1823 {"a0", "a0l", "a1", "a1l", "x", "y", "yl", "p", "pl", \
1824 "r0", "r1", "r2", "r3", "j", "k", "ybase", "pt", \
1825 "ar0", "ar1", "ar2", "ar3", \
1826 "c0", "c1", "c2", "pr", "rb", \
1827 "*(0)", "*(1)", "*(2)", "*(3)", "*(4)", "*(5)", \
1828 "*(6)", "*(7)", "*(8)", "*(9)", "*(10)", "*(11)", \
1829 "*(12)", "*(13)", "*(14)", "*(15)", "*(16)", "*(17)", \
1830 "*(18)", "*(19)", "*(20)", "*(21)", "*(22)", "*(23)", \
1831 "*(24)", "*(25)", "*(26)", "*(27)", "*(28)", "*(29)", \
1834 #define HIMODE_REGISTER_NAMES \
1835 {"a0", "a0", "a1", "a1", "x", "y", "y", "p", "p", \
1836 "r0", "r1", "r2", "r3", "j", "k", "ybase", "pt", \
1837 "ar0", "ar1", "ar2", "ar3", \
1838 "c0", "c1", "c2", "pr", "rb", \
1839 "*(0)", "*(1)", "*(2)", "*(3)", "*(4)", "*(5)", \
1840 "*(6)", "*(7)", "*(8)", "*(9)", "*(10)", "*(11)", \
1841 "*(12)", "*(13)", "*(14)", "*(15)", "*(16)", "*(17)", \
1842 "*(18)", "*(19)", "*(20)", "*(21)", "*(22)", "*(23)", \
1843 "*(24)", "*(25)", "*(26)", "*(27)", "*(28)", "*(29)", \
1846 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) 0
1848 /* Print operand X (an rtx) in assembler syntax to file FILE.
1849 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
1850 For `%' followed by punctuation, CODE is the punctuation and X is null.
1852 DSP1610 extensions for operand codes:
1854 %H - print lower 16 bits of constant
1855 %U - print upper 16 bits of constant
1856 %w - print low half of register (e.g 'a0l')
1857 %u - print upper half of register (e.g 'a0')
1858 %b - print high half of accumulator for F3 ALU instructions
1859 %h - print constant in decimal */
1861 #define PRINT_OPERAND(FILE, X, CODE) print_operand(FILE, X, CODE)
1864 /* Print a memory address as an operand to reference that memory location. */
1866 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
1868 /* This is how to output an insn to push a register on the stack.
1869 It need not be very fast code since it is used only for profiling */
1870 #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) fatal("Profiling not implemented yet.");
1872 /* This is how to output an insn to pop a register from the stack.
1873 It need not be very fast code since it is used only for profiling */
1874 #define ASM_OUTPUT_REG_POP(FILE,REGNO) fatal("Profiling not implemented yet.");
1876 /* OUTPUT OF DISPATCH TABLES */
1878 /* This macro should be provided on machines where the addresses in a dispatch
1879 table are relative to the table's own address. */
1880 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
1881 fprintf (FILE, "\tint L%d-L%d\n", VALUE, REL)
1883 /* This macro should be provided on machines where the addresses in a dispatch
1884 table are absolute. */
1885 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1886 fprintf (FILE, "\tint L%d\n", VALUE)
1888 /* ASSEMBLER COMMANDS FOR ALIGNMENT */
1890 /* This is how to output an assembler line that says to advance
1891 the location counter to a multiple of 2**LOG bytes. We should
1892 not have to do any alignment since the 1610 is a word machine. */
1893 #define ASM_OUTPUT_ALIGN(FILE,LOG)
1895 /* Define this macro if ASM_OUTPUT_SKIP should not be used in the text section
1896 because it fails to put zero1 in the bytes that are skipped. */
1897 #define ASM_NO_SKIP_IN_TEXT 1
1899 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
1900 fprintf (FILE, "\t%d * int 0\n", (SIZE))
1902 /* CONTROLLING DEBUGGING INFORMATION FORMAT */
1904 /* Define this macro if GCC should produce COFF-style debugging output
1905 for SDB in response to the '-g' option */
1906 #define SDB_DEBUGGING_INFO
1908 /* Support generating stabs for the listing file generator */
1909 #define DBX_DEBUGGING_INFO
1911 /* The default format when -g is given is still COFF debug info */
1912 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
1914 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
1916 /* MISCELLANEOUS PARAMETERS */
1918 /* Specify the machine mode that this machine uses
1919 for the index in the tablejump instruction. */
1920 #define CASE_VECTOR_MODE QImode
1922 /* Define this if the tablejump instruction expects the table
1923 to contain offsets from the address of the table.
1924 Do not define this if the table should contain absolute addresses. */
1925 /* #define CASE_VECTOR_PC_RELATIVE */
1927 /* Specify the tree operation to be used to convert reals to integers. */
1928 #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
1930 /* This is the kind of divide that is easiest to do in the general case. */
1931 #define EASY_DIV_EXPR TRUNC_DIV_EXPR
1933 /* Max number of bytes we can move from memory to memory
1934 in one reasonably fast instruction. */
1937 /* Defining this macro causes the compiler to omit a sign-extend, zero-extend,
1938 or bitwise 'and' instruction that truncates the count of a shift operation
1939 to a width equal to the number of bits needed to represent the size of the
1940 object being shifted. Do not define this macro unless the truncation applies
1941 to both shift operations and bit-field operations (if any). */
1942 /* #define SHIFT_COUNT_TRUNCATED */
1944 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
1945 is done just by pretending it is already truncated. */
1946 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1948 /* When a prototype says `char' or `short', really pass an `int'. */
1949 #define PROMOTE_PROTOTYPES
1951 /* An alias for the machine mode used for pointers */
1952 #define Pmode QImode
1954 /* A function address in a call instruction
1955 is a byte address (for indexing purposes)
1956 so give the MEM rtx a byte's mode. */
1957 #define FUNCTION_MODE QImode
1959 #if !defined(__DATE__)
1960 #define TARGET_VERSION fprintf (stderr, " (%s)", VERSION_INFO1)
1962 #define TARGET_VERSION fprintf (stderr, " (%s, %s)", VERSION_INFO1, __DATE__)
1965 #define VERSION_INFO1 "AT&T DSP16xx C Cross Compiler, version 1.2.0"
1968 /* Define this as 1 if `char' should by default be signed; else as 0. */
1969 #define DEFAULT_SIGNED_CHAR 1
1971 /* If this macro is defined, GNU CC gathers statistics about the number and
1972 kind of tree node it allocates during each run. The option '-fstats' will
1973 tell the compiler to print these statistics about the sizes of it obstacks. */
1974 #define GATHER_STATISTICS
1976 /* Define this so gcc does not output a call to __main, since we
1977 are not currently supporting c++. */
1978 #define INIT_SECTION_ASM_OP 1
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