Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/h8300/h8300.h @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 12 Feb 2010 23:39:51 +0900 |
| parents | a06113de4d67 |
| children | b7f97abdc517 |
| rev | line source |
|---|---|
| 0 | 1 /* Definitions of target machine for GNU compiler. |
| 2 Renesas H8/300 (generic) | |
| 3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1996, 1997, 1998, 1999, | |
|
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4 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009 |
| 0 | 5 Free Software Foundation, Inc. |
| 6 Contributed by Steve Chamberlain (sac@cygnus.com), | |
| 7 Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com). | |
| 8 | |
| 9 This file is part of GCC. | |
| 10 | |
| 11 GCC is free software; you can redistribute it and/or modify | |
| 12 it under the terms of the GNU General Public License as published by | |
| 13 the Free Software Foundation; either version 3, or (at your option) | |
| 14 any later version. | |
| 15 | |
| 16 GCC is distributed in the hope that it will be useful, | |
| 17 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 19 GNU General Public License for more details. | |
| 20 | |
| 21 You should have received a copy of the GNU General Public License | |
| 22 along with GCC; see the file COPYING3. If not see | |
| 23 <http://www.gnu.org/licenses/>. */ | |
| 24 | |
| 25 #ifndef GCC_H8300_H | |
| 26 #define GCC_H8300_H | |
| 27 | |
| 28 /* Which CPU to compile for. | |
| 29 We use int for CPU_TYPE to avoid lots of casts. */ | |
| 30 #if 0 /* defined in insn-attr.h, here for documentation */ | |
| 31 enum attr_cpu { CPU_H8300, CPU_H8300H }; | |
| 32 #endif | |
| 33 extern int cpu_type; | |
| 34 | |
| 35 /* Various globals defined in h8300.c. */ | |
| 36 | |
| 37 extern const char *h8_push_op, *h8_pop_op, *h8_mov_op; | |
| 38 extern const char * const *h8_reg_names; | |
| 39 | |
| 40 /* Target CPU builtins. */ | |
| 41 #define TARGET_CPU_CPP_BUILTINS() \ | |
| 42 do \ | |
| 43 { \ | |
| 44 if (TARGET_H8300H) \ | |
| 45 { \ | |
| 46 builtin_define ("__H8300H__"); \ | |
| 47 builtin_assert ("cpu=h8300h"); \ | |
| 48 builtin_assert ("machine=h8300h"); \ | |
| 49 if (TARGET_NORMAL_MODE) \ | |
| 50 { \ | |
| 51 builtin_define ("__NORMAL_MODE__"); \ | |
| 52 } \ | |
| 53 } \ | |
| 54 else if (TARGET_H8300SX) \ | |
| 55 { \ | |
| 56 builtin_define ("__H8300SX__"); \ | |
| 57 if (TARGET_NORMAL_MODE) \ | |
| 58 { \ | |
| 59 builtin_define ("__NORMAL_MODE__"); \ | |
| 60 } \ | |
| 61 } \ | |
| 62 else if (TARGET_H8300S) \ | |
| 63 { \ | |
| 64 builtin_define ("__H8300S__"); \ | |
| 65 builtin_assert ("cpu=h8300s"); \ | |
| 66 builtin_assert ("machine=h8300s"); \ | |
| 67 if (TARGET_NORMAL_MODE) \ | |
| 68 { \ | |
| 69 builtin_define ("__NORMAL_MODE__"); \ | |
| 70 } \ | |
| 71 } \ | |
| 72 else \ | |
| 73 { \ | |
| 74 builtin_define ("__H8300__"); \ | |
| 75 builtin_assert ("cpu=h8300"); \ | |
| 76 builtin_assert ("machine=h8300"); \ | |
| 77 } \ | |
| 78 } \ | |
| 79 while (0) | |
| 80 | |
| 81 #define LINK_SPEC "%{mh:%{mn:-m h8300hn}} %{mh:%{!mn:-m h8300h}} %{ms:%{mn:-m h8300sn}} %{ms:%{!mn:-m h8300s}}" | |
| 82 | |
| 83 #define LIB_SPEC "%{mrelax:-relax} %{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}" | |
| 84 | |
| 85 #define OPTIMIZATION_OPTIONS(LEVEL, SIZE) \ | |
| 86 do \ | |
| 87 { \ | |
| 88 /* Basic block reordering is only beneficial on targets with cache \ | |
| 89 and/or variable-cycle branches where (cycle count taken != \ | |
| 90 cycle count not taken). */ \ | |
| 91 flag_reorder_blocks = 0; \ | |
| 92 } \ | |
| 93 while (0) | |
| 94 | |
| 95 /* Print subsidiary information on the compiler version in use. */ | |
| 96 | |
| 97 #define TARGET_VERSION fprintf (stderr, " (Renesas H8/300)"); | |
| 98 | |
| 99 /* Macros used in the machine description to test the flags. */ | |
| 100 | |
| 101 /* Select between the H8/300 and H8/300H CPUs. */ | |
| 102 #define TARGET_H8300 (! TARGET_H8300H && ! TARGET_H8300S) | |
| 103 #define TARGET_H8300S (TARGET_H8300S_1 || TARGET_H8300SX) | |
| 104 /* Some multiply instructions are not available in all H8SX variants. | |
| 105 Use this macro instead of TARGET_H8300SX to indicate this, even | |
| 106 though we don't actually generate different code for now. */ | |
| 107 #define TARGET_H8300SXMUL TARGET_H8300SX | |
| 108 | |
| 109 #ifdef IN_LIBGCC2 | |
| 110 #undef TARGET_H8300H | |
| 111 #undef TARGET_H8300S | |
| 112 #undef TARGET_NORMAL_MODE | |
| 113 /* If compiling libgcc2, make these compile time constants based on what | |
| 114 flags are we actually compiling with. */ | |
| 115 #ifdef __H8300H__ | |
| 116 #define TARGET_H8300H 1 | |
| 117 #else | |
| 118 #define TARGET_H8300H 0 | |
| 119 #endif | |
| 120 #ifdef __H8300S__ | |
| 121 #define TARGET_H8300S 1 | |
| 122 #else | |
| 123 #define TARGET_H8300S 0 | |
| 124 #endif | |
| 125 #ifdef __NORMAL_MODE__ | |
| 126 #define TARGET_NORMAL_MODE 1 | |
| 127 #else | |
| 128 #define TARGET_NORMAL_MODE 0 | |
| 129 #endif | |
| 130 #endif /* !IN_LIBGCC2 */ | |
| 131 | |
| 132 /* Do things that must be done once at start up. */ | |
| 133 | |
| 134 #define OVERRIDE_OPTIONS \ | |
| 135 do \ | |
| 136 { \ | |
| 137 h8300_init_once (); \ | |
| 138 } \ | |
| 139 while (0) | |
| 140 | |
| 141 /* Default target_flags if no switches specified. */ | |
| 142 | |
| 143 #ifndef TARGET_DEFAULT | |
| 144 #define TARGET_DEFAULT (MASK_QUICKCALL) | |
| 145 #endif | |
| 146 | |
| 147 /* Show we can debug even without a frame pointer. */ | |
| 148 /* #define CAN_DEBUG_WITHOUT_FP */ | |
| 149 | |
|
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150 /* We want dwarf2 info available to gdb... */ |
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151 #define DWARF2_DEBUGGING_INFO 1 |
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152 /* ... but we don't actually support full dwarf2 EH. */ |
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153 #define MUST_USE_SJLJ_EXCEPTIONS 1 |
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154 |
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155 /* The return address is pushed on the stack. */ |
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156 #define INCOMING_RETURN_ADDR_RTX gen_rtx_MEM (Pmode, gen_rtx_REG (Pmode, STACK_POINTER_REGNUM)) |
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157 #define INCOMING_FRAME_SP_OFFSET (POINTER_SIZE / 8) |
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158 |
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159 #define DWARF_CIE_DATA_ALIGNMENT 2 |
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160 |
| 0 | 161 /* Define this if addresses of constant functions |
| 162 shouldn't be put through pseudo regs where they can be cse'd. | |
| 163 Desirable on machines where ordinary constants are expensive | |
| 164 but a CALL with constant address is cheap. | |
| 165 | |
| 166 Calls through a register are cheaper than calls to named | |
| 167 functions; however, the register pressure this causes makes | |
| 168 CSEing of function addresses generally a lose. */ | |
| 169 #define NO_FUNCTION_CSE | |
| 170 | |
| 171 /* Target machine storage layout */ | |
| 172 | |
| 173 /* Define this if most significant bit is lowest numbered | |
| 174 in instructions that operate on numbered bit-fields. | |
| 175 This is not true on the H8/300. */ | |
| 176 #define BITS_BIG_ENDIAN 0 | |
| 177 | |
| 178 /* Define this if most significant byte of a word is the lowest numbered. */ | |
| 179 /* That is true on the H8/300. */ | |
| 180 #define BYTES_BIG_ENDIAN 1 | |
| 181 | |
| 182 /* Define this if most significant word of a multiword number is lowest | |
| 183 numbered. */ | |
| 184 #define WORDS_BIG_ENDIAN 1 | |
| 185 | |
| 186 #define MAX_BITS_PER_WORD 32 | |
| 187 | |
| 188 /* Width of a word, in units (bytes). */ | |
| 189 #define UNITS_PER_WORD (TARGET_H8300H || TARGET_H8300S ? 4 : 2) | |
| 190 #define MIN_UNITS_PER_WORD 2 | |
| 191 | |
| 192 #define SHORT_TYPE_SIZE 16 | |
| 193 #define INT_TYPE_SIZE (TARGET_INT32 ? 32 : 16) | |
| 194 #define LONG_TYPE_SIZE 32 | |
| 195 #define LONG_LONG_TYPE_SIZE 64 | |
| 196 #define FLOAT_TYPE_SIZE 32 | |
| 197 #define DOUBLE_TYPE_SIZE 32 | |
| 198 #define LONG_DOUBLE_TYPE_SIZE DOUBLE_TYPE_SIZE | |
| 199 | |
| 200 #define MAX_FIXED_MODE_SIZE 32 | |
| 201 | |
| 202 /* Allocation boundary (in *bits*) for storing arguments in argument list. */ | |
| 203 #define PARM_BOUNDARY (TARGET_H8300H || TARGET_H8300S ? 32 : 16) | |
| 204 | |
| 205 /* Allocation boundary (in *bits*) for the code of a function. */ | |
| 206 #define FUNCTION_BOUNDARY 16 | |
| 207 | |
| 208 /* Alignment of field after `int : 0' in a structure. */ | |
| 209 /* One can argue this should be 32 for -mint32, but since 32-bit ints only | |
| 210 need 16-bit alignment, this is left as is so that -mint32 doesn't change | |
| 211 structure layouts. */ | |
| 212 #define EMPTY_FIELD_BOUNDARY 16 | |
| 213 | |
| 214 /* No data type wants to be aligned rounder than this. | |
| 215 32-bit values are aligned as such on the H8/300H and H8S for speed. */ | |
| 216 #define BIGGEST_ALIGNMENT \ | |
| 217 (((TARGET_H8300H || TARGET_H8300S) && ! TARGET_ALIGN_300) ? 32 : 16) | |
| 218 | |
| 219 /* The stack goes in 16/32 bit lumps. */ | |
| 220 #define STACK_BOUNDARY (TARGET_H8300 ? 16 : 32) | |
| 221 | |
| 222 /* Define this if move instructions will actually fail to work | |
| 223 when given unaligned data. */ | |
| 224 /* On the H8/300, longs can be aligned on halfword boundaries, but not | |
| 225 byte boundaries. */ | |
| 226 #define STRICT_ALIGNMENT 1 | |
| 227 | |
| 228 /* Standard register usage. */ | |
| 229 | |
| 230 /* Number of actual hardware registers. | |
| 231 The hardware registers are assigned numbers for the compiler | |
| 232 from 0 to just below FIRST_PSEUDO_REGISTER. | |
| 233 | |
| 234 All registers that the compiler knows about must be given numbers, | |
| 235 even those that are not normally considered general registers. | |
| 236 | |
| 237 Reg 9 does not correspond to any hardware register, but instead | |
| 238 appears in the RTL as an argument pointer prior to reload, and is | |
| 239 eliminated during reloading in favor of either the stack or frame | |
| 240 pointer. */ | |
| 241 | |
| 242 #define FIRST_PSEUDO_REGISTER 12 | |
| 243 | |
| 244 /* 1 for registers that have pervasive standard uses | |
| 245 and are not available for the register allocator. */ | |
| 246 | |
| 247 #define FIXED_REGISTERS \ | |
| 248 /* r0 r1 r2 r3 r4 r5 r6 r7 mac ap rap fp */ \ | |
| 249 { 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1 } | |
| 250 | |
| 251 /* 1 for registers not available across function calls. | |
| 252 These must include the FIXED_REGISTERS and also any | |
| 253 registers that can be used without being saved. | |
| 254 The latter must include the registers where values are returned | |
| 255 and the register where structure-value addresses are passed. | |
| 256 Aside from that, you can include as many other registers as you | |
| 257 like. | |
| 258 | |
| 259 H8 destroys r0,r1,r2,r3. */ | |
| 260 | |
| 261 #define CALL_USED_REGISTERS \ | |
| 262 /* r0 r1 r2 r3 r4 r5 r6 r7 mac ap rap fp */ \ | |
| 263 { 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1 } | |
| 264 | |
| 265 #define REG_ALLOC_ORDER \ | |
| 266 /* r0 r1 r2 r3 r4 r5 r6 r7 mac ap rap fp */ \ | |
| 267 { 2, 3, 0, 1, 4, 5, 6, 8, 7, 9, 10, 11 } | |
| 268 | |
| 269 #define CONDITIONAL_REGISTER_USAGE \ | |
| 270 { \ | |
| 271 if (!TARGET_MAC) \ | |
| 272 fixed_regs[MAC_REG] = call_used_regs[MAC_REG] = 1; \ | |
| 273 } | |
| 274 | |
| 275 #define HARD_REGNO_NREGS(REGNO, MODE) \ | |
| 276 h8300_hard_regno_nregs ((REGNO), (MODE)) | |
| 277 | |
| 278 #define HARD_REGNO_MODE_OK(REGNO, MODE) \ | |
| 279 h8300_hard_regno_mode_ok ((REGNO), (MODE)) | |
| 280 | |
| 281 /* Value is 1 if it is a good idea to tie two pseudo registers | |
| 282 when one has mode MODE1 and one has mode MODE2. | |
| 283 If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, | |
| 284 for any hard reg, then this must be 0 for correct output. */ | |
| 285 #define MODES_TIEABLE_P(MODE1, MODE2) \ | |
| 286 ((MODE1) == (MODE2) \ | |
| 287 || (((MODE1) == QImode || (MODE1) == HImode \ | |
| 288 || ((TARGET_H8300H || TARGET_H8300S) && (MODE1) == SImode)) \ | |
| 289 && ((MODE2) == QImode || (MODE2) == HImode \ | |
| 290 || ((TARGET_H8300H || TARGET_H8300S) && (MODE2) == SImode)))) | |
| 291 | |
| 292 /* A C expression that is nonzero if hard register NEW_REG can be | |
| 293 considered for use as a rename register for OLD_REG register */ | |
| 294 | |
| 295 #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \ | |
| 296 h8300_hard_regno_rename_ok (OLD_REG, NEW_REG) | |
| 297 | |
| 298 /* Specify the registers used for certain standard purposes. | |
| 299 The values of these macros are register numbers. */ | |
| 300 | |
| 301 /* H8/300 pc is not overloaded on a register. */ | |
| 302 | |
| 303 /*#define PC_REGNUM 15*/ | |
| 304 | |
| 305 /* Register to use for pushing function arguments. */ | |
| 306 #define STACK_POINTER_REGNUM SP_REG | |
| 307 | |
| 308 /* Base register for access to local variables of the function. */ | |
| 309 #define HARD_FRAME_POINTER_REGNUM HFP_REG | |
| 310 | |
| 311 /* Base register for access to local variables of the function. */ | |
| 312 #define FRAME_POINTER_REGNUM FP_REG | |
| 313 | |
| 314 /* Base register for access to arguments of the function. */ | |
| 315 #define ARG_POINTER_REGNUM AP_REG | |
| 316 | |
| 317 /* Register in which static-chain is passed to a function. */ | |
| 318 #define STATIC_CHAIN_REGNUM SC_REG | |
| 319 | |
| 320 /* Fake register that holds the address on the stack of the | |
| 321 current function's return address. */ | |
| 322 #define RETURN_ADDRESS_POINTER_REGNUM RAP_REG | |
| 323 | |
| 324 /* A C expression whose value is RTL representing the value of the return | |
| 325 address for the frame COUNT steps up from the current frame. | |
| 326 FRAMEADDR is already the frame pointer of the COUNT frame, assuming | |
| 327 a stack layout with the frame pointer as the first saved register. */ | |
| 328 #define RETURN_ADDR_RTX(COUNT, FRAME) h8300_return_addr_rtx ((COUNT), (FRAME)) | |
| 329 | |
| 330 /* Define the classes of registers for register constraints in the | |
| 331 machine description. Also define ranges of constants. | |
| 332 | |
| 333 One of the classes must always be named ALL_REGS and include all hard regs. | |
| 334 If there is more than one class, another class must be named NO_REGS | |
| 335 and contain no registers. | |
| 336 | |
| 337 The name GENERAL_REGS must be the name of a class (or an alias for | |
| 338 another name such as ALL_REGS). This is the class of registers | |
| 339 that is allowed by "g" or "r" in a register constraint. | |
| 340 Also, registers outside this class are allocated only when | |
| 341 instructions express preferences for them. | |
| 342 | |
| 343 The classes must be numbered in nondecreasing order; that is, | |
| 344 a larger-numbered class must never be contained completely | |
| 345 in a smaller-numbered class. | |
| 346 | |
| 347 For any two classes, it is very desirable that there be another | |
| 348 class that represents their union. */ | |
| 349 | |
| 350 enum reg_class { | |
| 351 NO_REGS, COUNTER_REGS, SOURCE_REGS, DESTINATION_REGS, | |
| 352 GENERAL_REGS, MAC_REGS, ALL_REGS, LIM_REG_CLASSES | |
| 353 }; | |
| 354 | |
| 355 #define N_REG_CLASSES ((int) LIM_REG_CLASSES) | |
| 356 | |
| 357 /* Give names of register classes as strings for dump file. */ | |
| 358 | |
| 359 #define REG_CLASS_NAMES \ | |
| 360 { "NO_REGS", "COUNTER_REGS", "SOURCE_REGS", "DESTINATION_REGS", \ | |
| 361 "GENERAL_REGS", "MAC_REGS", "ALL_REGS", "LIM_REGS" } | |
| 362 | |
| 363 /* The following macro defines cover classes for Integrated Register | |
| 364 Allocator. Cover classes is a set of non-intersected register | |
| 365 classes covering all hard registers used for register allocation | |
| 366 purpose. Any move between two registers of a cover class should be | |
| 367 cheaper than load or store of the registers. The macro value is | |
| 368 array of register classes with LIM_REG_CLASSES used as the end | |
| 369 marker. */ | |
| 370 | |
| 371 #define IRA_COVER_CLASSES \ | |
| 372 { \ | |
| 373 GENERAL_REGS, MAC_REGS, LIM_REG_CLASSES \ | |
| 374 } | |
| 375 | |
| 376 /* Define which registers fit in which classes. | |
| 377 This is an initializer for a vector of HARD_REG_SET | |
| 378 of length N_REG_CLASSES. */ | |
| 379 | |
| 380 #define REG_CLASS_CONTENTS \ | |
| 381 { {0}, /* No regs */ \ | |
| 382 {0x010}, /* COUNTER_REGS */ \ | |
| 383 {0x020}, /* SOURCE_REGS */ \ | |
| 384 {0x040}, /* DESTINATION_REGS */ \ | |
| 385 {0xeff}, /* GENERAL_REGS */ \ | |
| 386 {0x100}, /* MAC_REGS */ \ | |
| 387 {0xfff}, /* ALL_REGS */ \ | |
| 388 } | |
| 389 | |
| 390 /* The same information, inverted: | |
| 391 Return the class number of the smallest class containing | |
| 392 reg number REGNO. This could be a conditional expression | |
| 393 or could index an array. */ | |
| 394 | |
| 395 #define REGNO_REG_CLASS(REGNO) \ | |
| 396 ((REGNO) == MAC_REG ? MAC_REGS \ | |
| 397 : (REGNO) == COUNTER_REG ? COUNTER_REGS \ | |
| 398 : (REGNO) == SOURCE_REG ? SOURCE_REGS \ | |
| 399 : (REGNO) == DESTINATION_REG ? DESTINATION_REGS \ | |
| 400 : GENERAL_REGS) | |
| 401 | |
| 402 /* The class value for index registers, and the one for base regs. */ | |
| 403 | |
| 404 #define INDEX_REG_CLASS (TARGET_H8300SX ? GENERAL_REGS : NO_REGS) | |
| 405 #define BASE_REG_CLASS GENERAL_REGS | |
| 406 | |
| 407 /* Get reg_class from a letter such as appears in the machine description. | |
| 408 | |
| 409 'a' is the MAC register. */ | |
| 410 | |
| 411 #define REG_CLASS_FROM_LETTER(C) (h8300_reg_class_from_letter (C)) | |
| 412 | |
| 413 /* The letters I, J, K, L, M, N, O, P in a register constraint string | |
| 414 can be used to stand for particular ranges of immediate operands. | |
| 415 This macro defines what the ranges are. | |
| 416 C is the letter, and VALUE is a constant value. | |
| 417 Return 1 if VALUE is in the range specified by C. */ | |
| 418 | |
| 419 #define CONST_OK_FOR_I(VALUE) ((VALUE) == 0) | |
| 420 #define CONST_OK_FOR_J(VALUE) (((VALUE) & 0xff) == 0) | |
| 421 #define CONST_OK_FOR_L(VALUE) \ | |
| 422 (TARGET_H8300H || TARGET_H8300S \ | |
| 423 ? (VALUE) == 1 || (VALUE) == 2 || (VALUE) == 4 \ | |
| 424 : (VALUE) == 1 || (VALUE) == 2) | |
| 425 #define CONST_OK_FOR_M(VALUE) \ | |
| 426 ((VALUE) == 1 || (VALUE) == 2) | |
| 427 #define CONST_OK_FOR_N(VALUE) \ | |
| 428 (TARGET_H8300H || TARGET_H8300S \ | |
| 429 ? (VALUE) == -1 || (VALUE) == -2 || (VALUE) == -4 \ | |
| 430 : (VALUE) == -1 || (VALUE) == -2) | |
| 431 #define CONST_OK_FOR_O(VALUE) \ | |
| 432 ((VALUE) == -1 || (VALUE) == -2) | |
| 433 | |
| 434 /* Multi-letter constraints for constant are always started with P | |
| 435 (just because it was the only letter in the range left. New | |
| 436 constraints for constants should be added here. */ | |
| 437 #define CONST_OK_FOR_Ppositive(VALUE, NBITS) \ | |
| 438 ((VALUE) > 0 && (VALUE) < (1 << (NBITS))) | |
| 439 #define CONST_OK_FOR_Pnegative(VALUE, NBITS) \ | |
| 440 ((VALUE) < 0 && (VALUE) > -(1 << (NBITS))) | |
| 441 #define CONST_OK_FOR_P(VALUE, STR) \ | |
| 442 ((STR)[1] >= '1' && (STR)[1] <= '9' && (STR)[2] == '<' \ | |
| 443 ? (((STR)[3] == '0' || ((STR)[3] == 'X' && TARGET_H8300SX)) \ | |
| 444 && CONST_OK_FOR_Pnegative ((VALUE), (STR)[1] - '0')) \ | |
| 445 : ((STR)[1] >= '1' && (STR)[1] <= '9' && (STR)[2] == '>') \ | |
| 446 ? (((STR)[3] == '0' || ((STR)[3] == 'X' && TARGET_H8300SX)) \ | |
| 447 && CONST_OK_FOR_Ppositive ((VALUE), (STR)[1] - '0')) \ | |
| 448 : 0) | |
| 449 #define CONSTRAINT_LEN_FOR_P(STR) \ | |
| 450 ((((STR)[1] >= '1' && (STR)[1] <= '9') \ | |
| 451 && ((STR)[2] == '<' || (STR)[2] == '>') \ | |
| 452 && ((STR)[3] == 'X' || (STR)[3] == '0')) ? 4 \ | |
| 453 : 0) | |
| 454 | |
| 455 #define CONST_OK_FOR_CONSTRAINT_P(VALUE, C, STR) \ | |
| 456 ((C) == 'P' ? CONST_OK_FOR_P ((VALUE), (STR)) \ | |
| 457 : CONST_OK_FOR_LETTER_P ((VALUE), (C))) | |
| 458 | |
| 459 #define CONST_OK_FOR_LETTER_P(VALUE, C) \ | |
| 460 ((C) == 'I' ? CONST_OK_FOR_I (VALUE) : \ | |
| 461 (C) == 'J' ? CONST_OK_FOR_J (VALUE) : \ | |
| 462 (C) == 'L' ? CONST_OK_FOR_L (VALUE) : \ | |
| 463 (C) == 'M' ? CONST_OK_FOR_M (VALUE) : \ | |
| 464 (C) == 'N' ? CONST_OK_FOR_N (VALUE) : \ | |
| 465 (C) == 'O' ? CONST_OK_FOR_O (VALUE) : \ | |
| 466 0) | |
| 467 | |
| 468 /* Similar, but for floating constants, and defining letters G and H. | |
| 469 Here VALUE is the CONST_DOUBLE rtx itself. | |
| 470 | |
| 471 `G' is a floating-point zero. */ | |
| 472 | |
| 473 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ | |
| 474 ((C) == 'G' ? (VALUE) == CONST0_RTX (SFmode) \ | |
| 475 : 0) | |
| 476 | |
| 477 /* Given an rtx X being reloaded into a reg required to be | |
| 478 in class CLASS, return the class of reg to actually use. | |
| 479 In general this is just CLASS; but on some machines | |
| 480 in some cases it is preferable to use a more restrictive class. */ | |
| 481 | |
| 482 #define PREFERRED_RELOAD_CLASS(X, CLASS) (CLASS) | |
| 483 | |
| 484 /* Return the maximum number of consecutive registers | |
| 485 needed to represent mode MODE in a register of class CLASS. */ | |
| 486 | |
| 487 /* On the H8, this is the size of MODE in words. */ | |
| 488 | |
| 489 #define CLASS_MAX_NREGS(CLASS, MODE) \ | |
| 490 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) | |
| 491 | |
| 492 /* Any SI register-to-register move may need to be reloaded, | |
| 493 so define REGISTER_MOVE_COST to be > 2 so that reload never | |
| 494 shortcuts. */ | |
| 495 | |
| 496 #define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) \ | |
| 497 (CLASS1 == MAC_REGS || CLASS2 == MAC_REGS ? 6 : 3) | |
| 498 | |
| 499 /* Stack layout; function entry, exit and calling. */ | |
| 500 | |
| 501 /* Define this if pushing a word on the stack | |
| 502 makes the stack pointer a smaller address. */ | |
| 503 | |
| 504 #define STACK_GROWS_DOWNWARD | |
| 505 | |
| 506 /* Define this to nonzero if the nominal address of the stack frame | |
| 507 is at the high-address end of the local variables; | |
| 508 that is, each additional local variable allocated | |
| 509 goes at a more negative offset in the frame. */ | |
| 510 | |
| 511 #define FRAME_GROWS_DOWNWARD 1 | |
| 512 | |
| 513 /* Offset within stack frame to start allocating local variables at. | |
| 514 If FRAME_GROWS_DOWNWARD, this is the offset to the END of the | |
| 515 first local allocated. Otherwise, it is the offset to the BEGINNING | |
| 516 of the first local allocated. */ | |
| 517 | |
| 518 #define STARTING_FRAME_OFFSET 0 | |
| 519 | |
| 520 /* If we generate an insn to push BYTES bytes, | |
| 521 this says how many the stack pointer really advances by. | |
| 522 | |
| 523 On the H8/300, @-sp really pushes a byte if you ask it to - but that's | |
| 524 dangerous, so we claim that it always pushes a word, then we catch | |
| 525 the mov.b rx,@-sp and turn it into a mov.w rx,@-sp on output. | |
| 526 | |
| 527 On the H8/300H, we simplify TARGET_QUICKCALL by setting this to 4 | |
| 528 and doing a similar thing. */ | |
| 529 | |
| 530 #define PUSH_ROUNDING(BYTES) \ | |
| 531 (((BYTES) + PARM_BOUNDARY / 8 - 1) & -PARM_BOUNDARY / 8) | |
| 532 | |
| 533 /* Offset of first parameter from the argument pointer register value. */ | |
| 534 /* Is equal to the size of the saved fp + pc, even if an fp isn't | |
| 535 saved since the value is used before we know. */ | |
| 536 | |
| 537 #define FIRST_PARM_OFFSET(FNDECL) 0 | |
| 538 | |
| 539 /* Value is the number of bytes of arguments automatically | |
| 540 popped when returning from a subroutine call. | |
| 541 FUNDECL is the declaration node of the function (as a tree), | |
| 542 FUNTYPE is the data type of the function (as a tree), | |
| 543 or for a library call it is an identifier node for the subroutine name. | |
| 544 SIZE is the number of bytes of arguments passed on the stack. | |
| 545 | |
| 546 On the H8 the return does not pop anything. */ | |
| 547 | |
| 548 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, SIZE) 0 | |
| 549 | |
| 550 /* Definitions for register eliminations. | |
| 551 | |
| 552 This is an array of structures. Each structure initializes one pair | |
| 553 of eliminable registers. The "from" register number is given first, | |
| 554 followed by "to". Eliminations of the same "from" register are listed | |
| 555 in order of preference. | |
| 556 | |
| 557 We have three registers that can be eliminated on the h8300. | |
| 558 First, the frame pointer register can often be eliminated in favor | |
| 559 of the stack pointer register. Secondly, the argument pointer | |
| 560 register and the return address pointer register are always | |
| 561 eliminated; they are replaced with either the stack or frame | |
| 562 pointer. */ | |
| 563 | |
| 564 #define ELIMINABLE_REGS \ | |
| 565 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
| 566 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ | |
| 567 { RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
| 568 { RETURN_ADDRESS_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ | |
| 569 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
| 570 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}} | |
| 571 | |
| 572 /* Define the offset between two registers, one to be eliminated, and the other | |
| 573 its replacement, at the start of a routine. */ | |
| 574 | |
| 575 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ | |
| 576 ((OFFSET) = h8300_initial_elimination_offset ((FROM), (TO))) | |
| 577 | |
| 578 /* Define how to find the value returned by a function. | |
| 579 VALTYPE is the data type of the value (as a tree). | |
| 580 If the precise function being called is known, FUNC is its FUNCTION_DECL; | |
| 581 otherwise, FUNC is 0. | |
| 582 | |
| 583 On the H8 the return value is in R0/R1. */ | |
| 584 | |
| 585 #define FUNCTION_VALUE(VALTYPE, FUNC) \ | |
| 586 gen_rtx_REG (TYPE_MODE (VALTYPE), R0_REG) | |
| 587 | |
| 588 /* Define how to find the value returned by a library function | |
| 589 assuming the value has mode MODE. */ | |
| 590 | |
| 591 /* On the H8 the return value is in R0/R1. */ | |
| 592 | |
| 593 #define LIBCALL_VALUE(MODE) \ | |
| 594 gen_rtx_REG (MODE, R0_REG) | |
| 595 | |
| 596 /* 1 if N is a possible register number for a function value. | |
| 597 On the H8, R0 is the only register thus used. */ | |
| 598 | |
| 599 #define FUNCTION_VALUE_REGNO_P(N) ((N) == R0_REG) | |
| 600 | |
| 601 /* Define this if PCC uses the nonreentrant convention for returning | |
| 602 structure and union values. */ | |
| 603 | |
| 604 /*#define PCC_STATIC_STRUCT_RETURN*/ | |
| 605 | |
| 606 /* 1 if N is a possible register number for function argument passing. | |
| 607 On the H8, no registers are used in this way. */ | |
| 608 | |
| 609 #define FUNCTION_ARG_REGNO_P(N) (TARGET_QUICKCALL ? N < 3 : 0) | |
| 610 | |
| 611 /* When defined, the compiler allows registers explicitly used in the | |
| 612 rtl to be used as spill registers but prevents the compiler from | |
| 613 extending the lifetime of these registers. */ | |
| 614 | |
| 615 #define SMALL_REGISTER_CLASSES 1 | |
| 616 | |
| 617 /* Define a data type for recording info about an argument list | |
| 618 during the scan of that argument list. This data type should | |
| 619 hold all necessary information about the function itself | |
| 620 and about the args processed so far, enough to enable macros | |
| 621 such as FUNCTION_ARG to determine where the next arg should go. | |
| 622 | |
| 623 On the H8/300, this is a two item struct, the first is the number | |
| 624 of bytes scanned so far and the second is the rtx of the called | |
| 625 library function if any. */ | |
| 626 | |
| 627 #define CUMULATIVE_ARGS struct cum_arg | |
| 628 struct cum_arg | |
| 629 { | |
| 630 int nbytes; | |
| 631 struct rtx_def *libcall; | |
| 632 }; | |
| 633 | |
| 634 /* Initialize a variable CUM of type CUMULATIVE_ARGS | |
| 635 for a call to a function whose data type is FNTYPE. | |
| 636 For a library call, FNTYPE is 0. | |
| 637 | |
| 638 On the H8/300, the offset starts at 0. */ | |
| 639 | |
| 640 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ | |
| 641 ((CUM).nbytes = 0, (CUM).libcall = LIBNAME) | |
| 642 | |
| 643 /* Update the data in CUM to advance over an argument | |
| 644 of mode MODE and data type TYPE. | |
| 645 (TYPE is null for libcalls where that information may not be available.) */ | |
| 646 | |
| 647 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ | |
| 648 ((CUM).nbytes += ((MODE) != BLKmode \ | |
| 649 ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD \ | |
| 650 : (int_size_in_bytes (TYPE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD)) | |
| 651 | |
| 652 /* Define where to put the arguments to a function. | |
| 653 Value is zero to push the argument on the stack, | |
| 654 or a hard register in which to store the argument. | |
| 655 | |
| 656 MODE is the argument's machine mode. | |
| 657 TYPE is the data type of the argument (as a tree). | |
| 658 This is null for libcalls where that information may | |
| 659 not be available. | |
| 660 CUM is a variable of type CUMULATIVE_ARGS which gives info about | |
| 661 the preceding args and about the function being called. | |
| 662 NAMED is nonzero if this argument is a named parameter | |
| 663 (otherwise it is an extra parameter matching an ellipsis). */ | |
| 664 | |
| 665 /* On the H8/300 all normal args are pushed, unless -mquickcall in which | |
| 666 case the first 3 arguments are passed in registers. | |
| 667 See function `function_arg'. */ | |
| 668 | |
| 669 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ | |
| 670 function_arg (&CUM, MODE, TYPE, NAMED) | |
| 671 | |
| 672 /* Output assembler code to FILE to increment profiler label # LABELNO | |
| 673 for profiling a function entry. */ | |
| 674 | |
| 675 #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
| 676 fprintf (FILE, "\t%s\t#LP%d,%s\n\tjsr @mcount\n", \ | |
| 677 h8_mov_op, (LABELNO), h8_reg_names[0]); | |
| 678 | |
| 679 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, | |
| 680 the stack pointer does not matter. The value is tested only in | |
| 681 functions that have frame pointers. | |
| 682 No definition is equivalent to always zero. */ | |
| 683 | |
| 684 #define EXIT_IGNORE_STACK 0 | |
| 685 | |
| 686 /* Length in units of the trampoline for entering a nested function. */ | |
| 687 | |
| 688 #define TRAMPOLINE_SIZE ((Pmode == HImode) ? 8 : 12) | |
| 689 | |
| 690 /* Addressing modes, and classification of registers for them. */ | |
| 691 | |
| 692 #define HAVE_POST_INCREMENT 1 | |
| 693 #define HAVE_PRE_DECREMENT 1 | |
| 694 #define HAVE_POST_DECREMENT TARGET_H8300SX | |
| 695 #define HAVE_PRE_INCREMENT TARGET_H8300SX | |
| 696 | |
| 697 /* Macros to check register numbers against specific register classes. */ | |
| 698 | |
| 699 /* These assume that REGNO is a hard or pseudo reg number. | |
| 700 They give nonzero only if REGNO is a hard reg of the suitable class | |
| 701 or a pseudo reg currently allocated to a suitable hard reg. | |
| 702 Since they use reg_renumber, they are safe only once reg_renumber | |
| 703 has been allocated, which happens in local-alloc.c. */ | |
| 704 | |
| 705 #define REGNO_OK_FOR_INDEX_P(regno) 0 | |
| 706 | |
| 707 #define REGNO_OK_FOR_BASE_P(regno) \ | |
| 708 (((regno) < FIRST_PSEUDO_REGISTER && regno != MAC_REG) \ | |
| 709 || reg_renumber[regno] >= 0) | |
| 710 | |
| 711 /* Maximum number of registers that can appear in a valid memory address. */ | |
| 712 | |
| 713 #define MAX_REGS_PER_ADDRESS 1 | |
| 714 | |
| 715 /* 1 if X is an rtx for a constant that is a valid address. */ | |
| 716 | |
| 717 #define CONSTANT_ADDRESS_P(X) \ | |
| 718 (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ | |
| 719 || (GET_CODE (X) == CONST_INT \ | |
| 720 /* We handle signed and unsigned offsets here. */ \ | |
| 721 && INTVAL (X) > (TARGET_H8300 ? -0x10000 : -0x1000000) \ | |
| 722 && INTVAL (X) < (TARGET_H8300 ? 0x10000 : 0x1000000)) \ | |
| 723 || (GET_CODE (X) == HIGH || GET_CODE (X) == CONST)) | |
| 724 | |
| 725 /* Nonzero if the constant value X is a legitimate general operand. | |
| 726 It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ | |
| 727 | |
| 728 #define LEGITIMATE_CONSTANT_P(X) (h8300_legitimate_constant_p (X)) | |
| 729 | |
| 730 /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx | |
| 731 and check its validity for a certain class. | |
| 732 We have two alternate definitions for each of them. | |
| 733 The usual definition accepts all pseudo regs; the other rejects | |
| 734 them unless they have been allocated suitable hard regs. | |
| 735 The symbol REG_OK_STRICT causes the latter definition to be used. | |
| 736 | |
| 737 Most source files want to accept pseudo regs in the hope that | |
| 738 they will get allocated to the class that the insn wants them to be in. | |
| 739 Source files for reload pass need to be strict. | |
| 740 After reload, it makes no difference, since pseudo regs have | |
| 741 been eliminated by then. */ | |
| 742 | |
| 743 /* Non-strict versions. */ | |
| 744 #define REG_OK_FOR_INDEX_NONSTRICT_P(X) 0 | |
| 745 /* Don't use REGNO_OK_FOR_BASE_P here because it uses reg_renumber. */ | |
| 746 #define REG_OK_FOR_BASE_NONSTRICT_P(X) \ | |
| 747 (REGNO (X) >= FIRST_PSEUDO_REGISTER || REGNO (X) != MAC_REG) | |
| 748 | |
| 749 /* Strict versions. */ | |
| 750 #define REG_OK_FOR_INDEX_STRICT_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) | |
| 751 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) | |
| 752 | |
| 753 #ifndef REG_OK_STRICT | |
| 754 | |
| 755 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_INDEX_NONSTRICT_P (X) | |
| 756 #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NONSTRICT_P (X) | |
| 757 | |
| 758 #else | |
| 759 | |
| 760 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_INDEX_STRICT_P (X) | |
| 761 #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X) | |
| 762 | |
| 763 #endif | |
| 764 | |
| 765 /* Extra constraints. */ | |
| 766 | |
| 767 #define OK_FOR_Q(OP) \ | |
| 768 (TARGET_H8300SX && memory_operand ((OP), VOIDmode)) | |
| 769 | |
| 770 #define OK_FOR_R(OP) \ | |
| 771 (GET_CODE (OP) == CONST_INT \ | |
| 772 ? !h8300_shift_needs_scratch_p (INTVAL (OP), QImode) \ | |
| 773 : 0) | |
| 774 | |
| 775 #define OK_FOR_S(OP) \ | |
| 776 (GET_CODE (OP) == CONST_INT \ | |
| 777 ? !h8300_shift_needs_scratch_p (INTVAL (OP), HImode) \ | |
| 778 : 0) | |
| 779 | |
| 780 #define OK_FOR_T(OP) \ | |
| 781 (GET_CODE (OP) == CONST_INT \ | |
| 782 ? !h8300_shift_needs_scratch_p (INTVAL (OP), SImode) \ | |
| 783 : 0) | |
| 784 | |
| 785 /* 'U' if valid for a bset destination; | |
| 786 i.e. a register, register indirect, or the eightbit memory region | |
| 787 (a SYMBOL_REF with an SYMBOL_REF_FLAG set). | |
| 788 | |
| 789 On the H8S 'U' can also be a 16bit or 32bit absolute. */ | |
| 790 #define OK_FOR_U(OP) \ | |
| 791 ((GET_CODE (OP) == REG && REG_OK_FOR_BASE_P (OP)) \ | |
| 792 || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == REG \ | |
| 793 && REG_OK_FOR_BASE_P (XEXP (OP, 0))) \ | |
| 794 || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == SYMBOL_REF \ | |
| 795 && TARGET_H8300S) \ | |
| 796 || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == CONST \ | |
| 797 && GET_CODE (XEXP (XEXP (OP, 0), 0)) == PLUS \ | |
| 798 && GET_CODE (XEXP (XEXP (XEXP (OP, 0), 0), 0)) == SYMBOL_REF \ | |
| 799 && GET_CODE (XEXP (XEXP (XEXP (OP, 0), 0), 1)) == CONST_INT \ | |
| 800 && (TARGET_H8300S \ | |
| 801 || SYMBOL_REF_FLAG (XEXP (XEXP (XEXP (OP, 0), 0), 0)))) \ | |
| 802 || (GET_CODE (OP) == MEM \ | |
| 803 && h8300_eightbit_constant_address_p (XEXP (OP, 0))) \ | |
| 804 || (GET_CODE (OP) == MEM && TARGET_H8300S \ | |
| 805 && GET_CODE (XEXP (OP, 0)) == CONST_INT)) | |
| 806 | |
| 807 /* Multi-letter constraints starting with W are to be used for | |
| 808 operands that require a memory operand, i.e,. that are never used | |
| 809 along with register constraints (see EXTRA_MEMORY_CONSTRAINTS). | |
| 810 For operands that require a memory operand (or not) but that always | |
| 811 accept a register, a multi-letter constraint starting with Y should | |
| 812 be used instead. */ | |
| 813 | |
| 814 #define OK_FOR_WU(OP) \ | |
| 815 (GET_CODE (OP) == MEM && OK_FOR_U (OP)) | |
| 816 | |
| 817 #define OK_FOR_W(OP, STR) \ | |
| 818 ((STR)[1] == 'U' ? OK_FOR_WU (OP) \ | |
| 819 : 0) | |
| 820 | |
| 821 #define CONSTRAINT_LEN_FOR_W(STR) \ | |
| 822 ((STR)[1] == 'U' ? 2 \ | |
| 823 : 0) | |
| 824 | |
| 825 /* We don't have any constraint starting with Y yet, but before | |
| 826 someone uses it for a one-letter constraint and we're left without | |
| 827 any upper-case constraints left, we reserve it for extensions | |
| 828 here. */ | |
| 829 #define OK_FOR_Y(OP, STR) \ | |
| 830 (0) | |
| 831 | |
| 832 #define CONSTRAINT_LEN_FOR_Y(STR) \ | |
| 833 (0) | |
| 834 | |
| 835 #define OK_FOR_Z(OP) \ | |
| 836 (TARGET_H8300SX \ | |
| 837 && GET_CODE (OP) == MEM \ | |
| 838 && CONSTANT_P (XEXP ((OP), 0))) | |
| 839 | |
| 840 #define EXTRA_CONSTRAINT_STR(OP, C, STR) \ | |
| 841 ((C) == 'Q' ? OK_FOR_Q (OP) : \ | |
| 842 (C) == 'R' ? OK_FOR_R (OP) : \ | |
| 843 (C) == 'S' ? OK_FOR_S (OP) : \ | |
| 844 (C) == 'T' ? OK_FOR_T (OP) : \ | |
| 845 (C) == 'U' ? OK_FOR_U (OP) : \ | |
| 846 (C) == 'W' ? OK_FOR_W ((OP), (STR)) : \ | |
| 847 (C) == 'Y' ? OK_FOR_Y ((OP), (STR)) : \ | |
| 848 (C) == 'Z' ? OK_FOR_Z (OP) : \ | |
| 849 0) | |
| 850 | |
| 851 #define CONSTRAINT_LEN(C, STR) \ | |
| 852 ((C) == 'P' ? CONSTRAINT_LEN_FOR_P (STR) \ | |
| 853 : (C) == 'W' ? CONSTRAINT_LEN_FOR_W (STR) \ | |
| 854 : (C) == 'Y' ? CONSTRAINT_LEN_FOR_Y (STR) \ | |
| 855 : DEFAULT_CONSTRAINT_LEN ((C), (STR))) | |
| 856 | |
| 857 /* Experiments suggest that it's better not add 'Q' or 'U' here. No | |
| 858 patterns need it for correctness (no patterns use 'Q' and 'U' | |
| 859 without also providing a register alternative). And defining it | |
| 860 will mean that a spilled pseudo could be replaced by its frame | |
| 861 location in several consecutive insns. | |
| 862 | |
| 863 Instead, it seems to be better to force pseudos to be reloaded | |
| 864 into registers and then use peepholes to recombine insns when | |
| 865 beneficial. | |
| 866 | |
| 867 Unfortunately, for WU (unlike plain U, that matches regs as well), | |
| 868 we must require a memory address. In fact, all multi-letter | |
| 869 constraints started with W are supposed to have this property, so | |
| 870 we just test for W here. */ | |
| 871 #define EXTRA_MEMORY_CONSTRAINT(C, STR) \ | |
| 872 ((C) == 'W') | |
| 873 | |
| 874 | |
| 875 /* Go to LABEL if ADDR (a legitimate address expression) | |
| 876 has an effect that depends on the machine mode it is used for. | |
| 877 | |
| 878 On the H8/300, the predecrement and postincrement address depend thus | |
| 879 (the amount of decrement or increment being the length of the operand). */ | |
| 880 | |
| 881 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \ | |
| 882 if (GET_CODE (ADDR) == PLUS \ | |
| 883 && h8300_get_index (XEXP (ADDR, 0), VOIDmode, 0) != XEXP (ADDR, 0)) \ | |
| 884 goto LABEL; | |
| 885 | |
| 886 /* Specify the machine mode that this machine uses | |
| 887 for the index in the tablejump instruction. */ | |
| 888 #define CASE_VECTOR_MODE Pmode | |
| 889 | |
| 890 /* Define this as 1 if `char' should by default be signed; else as 0. | |
| 891 | |
| 892 On the H8/300, sign extension is expensive, so we'll say that chars | |
| 893 are unsigned. */ | |
| 894 #define DEFAULT_SIGNED_CHAR 0 | |
| 895 | |
| 896 /* This flag, if defined, says the same insns that convert to a signed fixnum | |
| 897 also convert validly to an unsigned one. */ | |
| 898 #define FIXUNS_TRUNC_LIKE_FIX_TRUNC | |
| 899 | |
| 900 /* Max number of bytes we can move from memory to memory | |
| 901 in one reasonably fast instruction. */ | |
| 902 #define MOVE_MAX (TARGET_H8300H || TARGET_H8300S ? 4 : 2) | |
| 903 #define MAX_MOVE_MAX 4 | |
| 904 | |
| 905 /* Nonzero if access to memory by bytes is slow and undesirable. */ | |
| 906 #define SLOW_BYTE_ACCESS TARGET_SLOWBYTE | |
| 907 | |
| 908 /* Define if shifts truncate the shift count | |
| 909 which implies one can omit a sign-extension or zero-extension | |
| 910 of a shift count. */ | |
| 911 /* #define SHIFT_COUNT_TRUNCATED */ | |
| 912 | |
| 913 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits | |
| 914 is done just by pretending it is already truncated. */ | |
| 915 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 | |
| 916 | |
| 917 /* Specify the machine mode that pointers have. | |
| 918 After generation of rtl, the compiler makes no further distinction | |
| 919 between pointers and any other objects of this machine mode. */ | |
| 920 #define Pmode \ | |
| 921 ((TARGET_H8300H || TARGET_H8300S) && !TARGET_NORMAL_MODE ? SImode : HImode) | |
| 922 | |
| 923 /* ANSI C types. | |
| 924 We use longs for the H8/300H and the H8S because ints can be 16 or 32. | |
| 925 GCC requires SIZE_TYPE to be the same size as pointers. */ | |
| 926 #define SIZE_TYPE \ | |
| 927 (TARGET_H8300 || TARGET_NORMAL_MODE ? TARGET_INT32 ? "short unsigned int" : "unsigned int" : "long unsigned int") | |
| 928 #define PTRDIFF_TYPE \ | |
| 929 (TARGET_H8300 || TARGET_NORMAL_MODE ? TARGET_INT32 ? "short int" : "int" : "long int") | |
| 930 | |
| 931 #define POINTER_SIZE \ | |
| 932 ((TARGET_H8300H || TARGET_H8300S) && !TARGET_NORMAL_MODE ? 32 : 16) | |
| 933 | |
| 934 #define WCHAR_TYPE "short unsigned int" | |
| 935 #define WCHAR_TYPE_SIZE 16 | |
| 936 | |
| 937 /* A function address in a call instruction | |
| 938 is a byte address (for indexing purposes) | |
| 939 so give the MEM rtx a byte's mode. */ | |
| 940 #define FUNCTION_MODE QImode | |
| 941 | |
| 942 /* Return the length of JUMP's delay slot insn (0 if it has none). | |
| 943 If JUMP is a delayed branch, NEXT_INSN (PREV_INSN (JUMP)) will | |
| 944 be the containing SEQUENCE, not JUMP itself. */ | |
| 945 #define DELAY_SLOT_LENGTH(JUMP) \ | |
| 946 (NEXT_INSN (PREV_INSN (JUMP)) == JUMP ? 0 : 2) | |
| 947 | |
| 948 #define BRANCH_COST(speed_p, predictable_p) 0 | |
| 949 | |
| 950 /* Tell final.c how to eliminate redundant test instructions. */ | |
| 951 | |
| 952 /* Here we define machine-dependent flags and fields in cc_status | |
| 953 (see `conditions.h'). No extra ones are needed for the h8300. */ | |
| 954 | |
| 955 /* Store in cc_status the expressions | |
| 956 that the condition codes will describe | |
| 957 after execution of an instruction whose pattern is EXP. | |
| 958 Do not alter them if the instruction would not alter the cc's. */ | |
| 959 | |
| 960 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc (EXP, INSN) | |
| 961 | |
| 962 /* The add insns don't set overflow in a usable way. */ | |
| 963 #define CC_OVERFLOW_UNUSABLE 01000 | |
| 964 /* The mov,and,or,xor insns don't set carry. That's OK though as the | |
| 965 Z bit is all we need when doing unsigned comparisons on the result of | |
| 966 these insns (since they're always with 0). However, conditions.h has | |
| 967 CC_NO_OVERFLOW defined for this purpose. Rename it to something more | |
| 968 understandable. */ | |
| 969 #define CC_NO_CARRY CC_NO_OVERFLOW | |
| 970 | |
| 971 /* Control the assembler format that we output. */ | |
| 972 | |
| 973 /* Output to assembler file text saying following lines | |
| 974 may contain character constants, extra white space, comments, etc. */ | |
| 975 | |
| 976 #define ASM_APP_ON "; #APP\n" | |
| 977 | |
| 978 /* Output to assembler file text saying following lines | |
| 979 no longer contain unusual constructs. */ | |
| 980 | |
| 981 #define ASM_APP_OFF "; #NO_APP\n" | |
| 982 | |
| 983 #define FILE_ASM_OP "\t.file\n" | |
| 984 | |
| 985 /* The assembler op to get a word, 2 bytes for the H8/300, 4 for H8/300H. */ | |
| 986 #define ASM_WORD_OP \ | |
| 987 (TARGET_H8300 || TARGET_NORMAL_MODE ? "\t.word\t" : "\t.long\t") | |
| 988 | |
| 989 #define TEXT_SECTION_ASM_OP "\t.section .text" | |
| 990 #define DATA_SECTION_ASM_OP "\t.section .data" | |
| 991 #define BSS_SECTION_ASM_OP "\t.section .bss" | |
| 992 | |
| 993 #undef DO_GLOBAL_CTORS_BODY | |
| 994 #define DO_GLOBAL_CTORS_BODY \ | |
| 995 { \ | |
| 996 extern func_ptr __ctors[]; \ | |
| 997 extern func_ptr __ctors_end[]; \ | |
| 998 func_ptr *p; \ | |
| 999 for (p = __ctors_end; p > __ctors; ) \ | |
| 1000 { \ | |
| 1001 (*--p)(); \ | |
| 1002 } \ | |
| 1003 } | |
| 1004 | |
| 1005 #undef DO_GLOBAL_DTORS_BODY | |
| 1006 #define DO_GLOBAL_DTORS_BODY \ | |
| 1007 { \ | |
| 1008 extern func_ptr __dtors[]; \ | |
| 1009 extern func_ptr __dtors_end[]; \ | |
| 1010 func_ptr *p; \ | |
| 1011 for (p = __dtors; p < __dtors_end; p++) \ | |
| 1012 { \ | |
| 1013 (*p)(); \ | |
| 1014 } \ | |
| 1015 } | |
| 1016 | |
| 1017 /* How to refer to registers in assembler output. | |
| 1018 This sequence is indexed by compiler's hard-register-number (see above). */ | |
| 1019 | |
| 1020 #define REGISTER_NAMES \ | |
| 1021 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "sp", "mac", "ap", "rap", "fp" } | |
| 1022 | |
| 1023 #define ADDITIONAL_REGISTER_NAMES \ | |
| 1024 { {"er0", 0}, {"er1", 1}, {"er2", 2}, {"er3", 3}, {"er4", 4}, \ | |
| 1025 {"er5", 5}, {"er6", 6}, {"er7", 7}, {"r7", 7} } | |
| 1026 | |
| 1027 /* Globalizing directive for a label. */ | |
| 1028 #define GLOBAL_ASM_OP "\t.global " | |
| 1029 | |
| 1030 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ | |
| 1031 ASM_OUTPUT_LABEL (FILE, NAME) | |
| 1032 | |
| 1033 /* The prefix to add to user-visible assembler symbols. */ | |
| 1034 | |
| 1035 #define USER_LABEL_PREFIX "_" | |
| 1036 | |
| 1037 /* This is how to store into the string LABEL | |
| 1038 the symbol_ref name of an internal numbered label where | |
| 1039 PREFIX is the class of label and NUM is the number within the class. | |
| 1040 This is suitable for output with `assemble_name'. | |
| 1041 | |
| 1042 N.B.: The h8300.md branch_true and branch_false patterns also know | |
| 1043 how to generate internal labels. */ | |
| 1044 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ | |
| 1045 sprintf (LABEL, "*.%s%lu", PREFIX, (unsigned long)(NUM)) | |
| 1046 | |
| 1047 /* This is how to output an insn to push a register on the stack. | |
| 1048 It need not be very fast code. */ | |
| 1049 | |
| 1050 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \ | |
| 1051 fprintf (FILE, "\t%s\t%s\n", h8_push_op, h8_reg_names[REGNO]) | |
| 1052 | |
| 1053 /* This is how to output an insn to pop a register from the stack. | |
| 1054 It need not be very fast code. */ | |
| 1055 | |
| 1056 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \ | |
| 1057 fprintf (FILE, "\t%s\t%s\n", h8_pop_op, h8_reg_names[REGNO]) | |
| 1058 | |
| 1059 /* This is how to output an element of a case-vector that is absolute. */ | |
| 1060 | |
| 1061 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ | |
| 1062 fprintf (FILE, "%s.L%d\n", ASM_WORD_OP, VALUE) | |
| 1063 | |
| 1064 /* This is how to output an element of a case-vector that is relative. */ | |
| 1065 | |
| 1066 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ | |
| 1067 fprintf (FILE, "%s.L%d-.L%d\n", ASM_WORD_OP, VALUE, REL) | |
| 1068 | |
| 1069 /* This is how to output an assembler line | |
| 1070 that says to advance the location counter | |
| 1071 to a multiple of 2**LOG bytes. */ | |
| 1072 | |
| 1073 #define ASM_OUTPUT_ALIGN(FILE, LOG) \ | |
| 1074 if ((LOG) != 0) \ | |
| 1075 fprintf (FILE, "\t.align %d\n", (LOG)) | |
| 1076 | |
| 1077 #define ASM_OUTPUT_SKIP(FILE, SIZE) \ | |
| 1078 fprintf (FILE, "\t.space %d\n", (int)(SIZE)) | |
| 1079 | |
| 1080 /* This says how to output an assembler line | |
| 1081 to define a global common symbol. */ | |
| 1082 | |
| 1083 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ | |
| 1084 ( fputs ("\t.comm ", (FILE)), \ | |
| 1085 assemble_name ((FILE), (NAME)), \ | |
| 1086 fprintf ((FILE), ",%lu\n", (unsigned long)(SIZE))) | |
| 1087 | |
| 1088 /* This says how to output the assembler to define a global | |
| 1089 uninitialized but not common symbol. | |
| 1090 Try to use asm_output_bss to implement this macro. */ | |
| 1091 | |
| 1092 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED) \ | |
| 1093 asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED)) | |
| 1094 | |
| 1095 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ | |
| 1096 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) | |
| 1097 | |
| 1098 /* This says how to output an assembler line | |
| 1099 to define a local common symbol. */ | |
| 1100 | |
| 1101 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ | |
| 1102 ( fputs ("\t.lcomm ", (FILE)), \ | |
| 1103 assemble_name ((FILE), (NAME)), \ | |
| 1104 fprintf ((FILE), ",%d\n", (int)(SIZE))) | |
| 1105 | |
| 1106 #define ASM_PN_FORMAT "%s___%lu" | |
| 1107 | |
| 1108 /* Print an instruction operand X on file FILE. | |
| 1109 Look in h8300.c for details. */ | |
| 1110 | |
| 1111 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \ | |
| 1112 ((CODE) == '#') | |
| 1113 | |
| 1114 #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) | |
| 1115 | |
| 1116 /* Print a memory operand whose address is X, on file FILE. | |
| 1117 This uses a function in h8300.c. */ | |
| 1118 | |
| 1119 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR) | |
| 1120 | |
| 1121 /* H8300 specific pragmas. */ | |
| 1122 #define REGISTER_TARGET_PRAGMAS() \ | |
| 1123 do \ | |
| 1124 { \ | |
| 1125 c_register_pragma (0, "saveall", h8300_pr_saveall); \ | |
| 1126 c_register_pragma (0, "interrupt", h8300_pr_interrupt); \ | |
| 1127 } \ | |
| 1128 while (0) | |
| 1129 | |
| 1130 #define FINAL_PRESCAN_INSN(insn, operand, nop) \ | |
| 1131 final_prescan_insn (insn, operand, nop) | |
| 1132 | |
| 1133 extern int h8300_move_ratio; | |
| 1134 #define MOVE_RATIO(speed) h8300_move_ratio | |
| 1135 | |
| 1136 /* Machine-specific symbol_ref flags. */ | |
| 1137 #define SYMBOL_FLAG_FUNCVEC_FUNCTION (SYMBOL_FLAG_MACH_DEP << 0) | |
| 1138 #define SYMBOL_FLAG_EIGHTBIT_DATA (SYMBOL_FLAG_MACH_DEP << 1) | |
| 1139 #define SYMBOL_FLAG_TINY_DATA (SYMBOL_FLAG_MACH_DEP << 2) | |
| 1140 | |
| 1141 #endif /* ! GCC_H8300_H */ |