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07aae5c2 | 1 | /* Subroutines for insn-output.c for Hitachi H8/300. |
400500c4 | 2 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 |
c4777027 | 3 | Free Software Foundation, Inc. |
48837e29 DE |
4 | Contributed by Steve Chamberlain (sac@cygnus.com), |
5 | Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com). | |
07aae5c2 SC |
6 | |
7 | This file is part of GNU CC. | |
8 | ||
9 | GNU CC is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU CC is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU CC; see the file COPYING. If not, write to | |
97aadbb9 RK |
21 | the Free Software Foundation, 59 Temple Place - Suite 330, |
22 | Boston, MA 02111-1307, USA. */ | |
07aae5c2 | 23 | |
07aae5c2 | 24 | #include "config.h" |
c5c76735 | 25 | #include "system.h" |
07aae5c2 | 26 | #include "rtl.h" |
bf6bb899 | 27 | #include "tree.h" |
07aae5c2 SC |
28 | #include "regs.h" |
29 | #include "hard-reg-set.h" | |
30 | #include "real.h" | |
31 | #include "insn-config.h" | |
32 | #include "conditions.h" | |
07aae5c2 SC |
33 | #include "output.h" |
34 | #include "insn-attr.h" | |
35 | #include "flags.h" | |
36 | #include "recog.h" | |
37 | #include "expr.h" | |
bf6bb899 | 38 | #include "function.h" |
441d04c6 | 39 | #include "toplev.h" |
8b97c5f8 | 40 | #include "c-pragma.h" |
441d04c6 | 41 | #include "tm_p.h" |
f2a9645f | 42 | #include "ggc.h" |
672a6f42 NB |
43 | #include "target.h" |
44 | #include "target-def.h" | |
07aae5c2 SC |
45 | |
46 | /* Forward declarations. */ | |
f6da8bc3 KG |
47 | static int h8300_interrupt_function_p PARAMS ((tree)); |
48 | static int h8300_monitor_function_p PARAMS ((tree)); | |
49 | static int h8300_os_task_function_p PARAMS ((tree)); | |
50 | static void dosize PARAMS ((FILE *, const char *, unsigned int)); | |
8682223f KH |
51 | static int round_frame_size PARAMS ((int)); |
52 | static unsigned int compute_saved_regs PARAMS ((void)); | |
53 | static void push PARAMS ((FILE *, int)); | |
54 | static void pop PARAMS ((FILE *, int)); | |
f6da8bc3 | 55 | static const char *cond_string PARAMS ((enum rtx_code)); |
91d231cb JM |
56 | const struct attribute_spec h8300_attribute_table[]; |
57 | static tree h8300_handle_fndecl_attribute PARAMS ((tree *, tree, tree, int, bool *)); | |
58 | static tree h8300_handle_eightbit_data_attribute PARAMS ((tree *, tree, tree, int, bool *)); | |
59 | static tree h8300_handle_tiny_data_attribute PARAMS ((tree *, tree, tree, int, bool *)); | |
08c148a8 NB |
60 | static void h8300_output_function_prologue PARAMS ((FILE *, HOST_WIDE_INT)); |
61 | static void h8300_output_function_epilogue PARAMS ((FILE *, HOST_WIDE_INT)); | |
715bdd29 | 62 | static void h8300_asm_named_section PARAMS ((const char *, unsigned int)); |
f5b65a56 | 63 | |
48837e29 DE |
64 | /* CPU_TYPE, says what cpu we're compiling for. */ |
65 | int cpu_type; | |
66 | ||
f5b65a56 JL |
67 | /* True if the current function is an interrupt handler |
68 | (either via #pragma or an attribute specification). */ | |
69 | int interrupt_handler; | |
70 | ||
808fbfac | 71 | /* True if the current function is an OS Task |
fabe72bb JL |
72 | (via an attribute specification). */ |
73 | int os_task; | |
74 | ||
75 | /* True if the current function is a monitor | |
76 | (via an attribute specification). */ | |
77 | int monitor; | |
07aae5c2 SC |
78 | |
79 | /* True if a #pragma saveall has been seen for the current function. */ | |
80 | int pragma_saveall; | |
81 | ||
441d04c6 | 82 | static const char *const names_big[] = |
07e4d94e | 83 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7" }; |
48837e29 | 84 | |
441d04c6 | 85 | static const char *const names_extended[] = |
07e4d94e | 86 | { "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7" }; |
48837e29 | 87 | |
441d04c6 | 88 | static const char *const names_upper_extended[] = |
07e4d94e | 89 | { "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7" }; |
48837e29 DE |
90 | |
91 | /* Points to one of the above. */ | |
92 | /* ??? The above could be put in an array indexed by CPU_TYPE. */ | |
441d04c6 | 93 | const char * const *h8_reg_names; |
48837e29 DE |
94 | |
95 | /* Various operations needed by the following, indexed by CPU_TYPE. */ | |
48837e29 | 96 | |
07e4d94e KH |
97 | static const char *const h8_push_ops[2] = { "push", "push.l" }; |
98 | static const char *const h8_pop_ops[2] = { "pop", "pop.l" }; | |
99 | static const char *const h8_mov_ops[2] = { "mov.w", "mov.l" }; | |
48837e29 | 100 | |
441d04c6 | 101 | const char *h8_push_op, *h8_pop_op, *h8_mov_op; |
672a6f42 NB |
102 | \f |
103 | /* Initialize the GCC target structure. */ | |
91d231cb JM |
104 | #undef TARGET_ATTRIBUTE_TABLE |
105 | #define TARGET_ATTRIBUTE_TABLE h8300_attribute_table | |
48837e29 | 106 | |
08c148a8 NB |
107 | #undef TARGET_ASM_FUNCTION_PROLOGUE |
108 | #define TARGET_ASM_FUNCTION_PROLOGUE h8300_output_function_prologue | |
109 | #undef TARGET_ASM_FUNCTION_EPILOGUE | |
110 | #define TARGET_ASM_FUNCTION_EPILOGUE h8300_output_function_epilogue | |
111 | ||
f6897b10 | 112 | struct gcc_target targetm = TARGET_INITIALIZER; |
672a6f42 | 113 | \f |
48837e29 DE |
114 | /* Initialize various cpu specific globals at start up. */ |
115 | ||
116 | void | |
117 | h8300_init_once () | |
118 | { | |
119 | if (TARGET_H8300) | |
120 | { | |
121 | cpu_type = (int) CPU_H8300; | |
122 | h8_reg_names = names_big; | |
123 | } | |
124 | else | |
125 | { | |
8682223f | 126 | /* For this we treat the H8/300H and H8/S the same. */ |
48837e29 DE |
127 | cpu_type = (int) CPU_H8300H; |
128 | h8_reg_names = names_extended; | |
129 | } | |
130 | h8_push_op = h8_push_ops[cpu_type]; | |
131 | h8_pop_op = h8_pop_ops[cpu_type]; | |
132 | h8_mov_op = h8_mov_ops[cpu_type]; | |
17f0f8fa KH |
133 | |
134 | if (!TARGET_H8300S && TARGET_MAC) | |
400500c4 RK |
135 | { |
136 | error ("-ms2600 is used without -ms."); | |
137 | target_flags |= 1; | |
138 | } | |
48837e29 | 139 | } |
07aae5c2 | 140 | |
441d04c6 | 141 | const char * |
07aae5c2 SC |
142 | byte_reg (x, b) |
143 | rtx x; | |
144 | int b; | |
145 | { | |
441d04c6 | 146 | static const char *const names_small[] = |
48837e29 | 147 | {"r0l", "r0h", "r1l", "r1h", "r2l", "r2h", "r3l", "r3h", |
bd93f126 | 148 | "r4l", "r4h", "r5l", "r5h", "r6l", "r6h", "r7l", "r7h"}; |
07aae5c2 SC |
149 | |
150 | return names_small[REGNO (x) * 2 + b]; | |
151 | } | |
152 | ||
153 | /* REGNO must be saved/restored across calls if this macro is true. */ | |
48837e29 DE |
154 | |
155 | #define WORD_REG_USED(regno) \ | |
fc80ea73 | 156 | (regno < 7 \ |
07e4d94e | 157 | /* No need to save registers if this function will not return. */\ |
fc80ea73 JL |
158 | && ! TREE_THIS_VOLATILE (current_function_decl) \ |
159 | && (pragma_saveall \ | |
160 | /* Save any call saved register that was used. */ \ | |
161 | || (regs_ever_live[regno] && !call_used_regs[regno]) \ | |
162 | /* Save the frame pointer if it was used. */ \ | |
163 | || (regno == FRAME_POINTER_REGNUM && regs_ever_live[regno])\ | |
164 | /* Save any register used in an interrupt handler. */ \ | |
165 | || (interrupt_handler && regs_ever_live[regno]) \ | |
166 | /* Save call clobbered registers in non-leaf interrupt \ | |
167 | handlers. */ \ | |
168 | || (interrupt_handler \ | |
169 | && call_used_regs[regno] \ | |
170 | && !current_function_is_leaf))) | |
07aae5c2 SC |
171 | |
172 | /* Output assembly language to FILE for the operation OP with operand size | |
48837e29 | 173 | SIZE to adjust the stack pointer. */ |
48837e29 | 174 | |
07aae5c2 | 175 | static void |
f8f26adc | 176 | dosize (file, op, size) |
07aae5c2 | 177 | FILE *file; |
441d04c6 | 178 | const char *op; |
07aae5c2 | 179 | unsigned int size; |
07aae5c2 | 180 | { |
7b3d4613 KH |
181 | /* On the H8/300H and H8/S, for sizes <= 8 bytes, it is as good or |
182 | better to use adds/subs insns rather than add.l/sub.l with an | |
183 | immediate value. | |
184 | ||
185 | Also, on the H8/300, if we don't have a temporary to hold the | |
186 | size of the frame in the prologue, we simply emit a sequence of | |
187 | subs since this shouldn't happen often. */ | |
188 | if ((TARGET_H8300 && size <= 4) | |
189 | || ((TARGET_H8300H || TARGET_H8300S) && size <= 8) | |
768caa28 | 190 | || (TARGET_H8300 && interrupt_handler) |
7b3d4613 | 191 | || (TARGET_H8300 && current_function_needs_context |
63a57e0f | 192 | && ! strcmp (op, "sub"))) |
f8f26adc | 193 | { |
64530b82 | 194 | unsigned HOST_WIDE_INT amount; |
f8f26adc | 195 | |
7b3d4613 KH |
196 | /* Try different amounts in descending order. */ |
197 | for (amount = (TARGET_H8300H || TARGET_H8300S) ? 4 : 2; | |
198 | amount > 0; | |
199 | amount /= 2) | |
82fa9209 | 200 | { |
1a63219b | 201 | for (; size >= amount; size -= amount) |
7b3d4613 | 202 | fprintf (file, "\t%ss\t#%d,sp\n", op, amount); |
82fa9209 | 203 | } |
7b3d4613 KH |
204 | } |
205 | else | |
206 | { | |
48837e29 | 207 | if (TARGET_H8300) |
7b3d4613 | 208 | fprintf (file, "\tmov.w\t#%d,r3\n\t%s.w\tr3,sp\n", size, op); |
48837e29 | 209 | else |
7b3d4613 | 210 | fprintf (file, "\t%s.l\t#%d,sp\n", op, size); |
07aae5c2 SC |
211 | } |
212 | } | |
213 | ||
8682223f KH |
214 | /* Round up frame size SIZE. */ |
215 | ||
216 | static int | |
217 | round_frame_size (size) | |
218 | int size; | |
219 | { | |
220 | return (size + STACK_BOUNDARY / 8 - 1) & -STACK_BOUNDARY / 8; | |
221 | } | |
222 | ||
223 | /* Compute which registers to push/pop. | |
224 | Return a bit vector of registers. */ | |
225 | ||
226 | static unsigned int | |
227 | compute_saved_regs () | |
228 | { | |
229 | unsigned int saved_regs = 0; | |
230 | int regno; | |
231 | ||
232 | /* Construct a bit vector of registers to be pushed/popped. */ | |
233 | for (regno = 0; regno <= 6; regno++) | |
234 | { | |
235 | if (WORD_REG_USED (regno)) | |
236 | saved_regs |= 1 << regno; | |
237 | } | |
238 | ||
239 | /* Don't push/pop the frame pointer as it is treated separately. */ | |
240 | if (frame_pointer_needed) | |
241 | saved_regs &= ~(1 << FRAME_POINTER_REGNUM); | |
242 | ||
243 | return saved_regs; | |
244 | } | |
245 | ||
246 | /* Output assembly language code to push register RN. */ | |
247 | ||
248 | static void | |
249 | push (file, rn) | |
250 | FILE *file; | |
251 | int rn; | |
252 | { | |
253 | fprintf (file, "\t%s\t%s\n", h8_push_op, h8_reg_names[rn]); | |
254 | } | |
255 | ||
256 | /* Output assembly language code to pop register RN. */ | |
257 | ||
258 | static void | |
259 | pop (file, rn) | |
260 | FILE *file; | |
261 | int rn; | |
262 | { | |
263 | fprintf (file, "\t%s\t%s\n", h8_pop_op, h8_reg_names[rn]); | |
264 | } | |
07aae5c2 SC |
265 | |
266 | /* This is what the stack looks like after the prolog of | |
267 | a function with a frame has been set up: | |
268 | ||
48837e29 DE |
269 | <args> |
270 | PC | |
271 | FP <- fp | |
272 | <locals> | |
273 | <saved registers> <- sp | |
07aae5c2 SC |
274 | |
275 | This is what the stack looks like after the prolog of | |
276 | a function which doesn't have a frame: | |
277 | ||
48837e29 DE |
278 | <args> |
279 | PC | |
280 | <locals> | |
281 | <saved registers> <- sp | |
07aae5c2 SC |
282 | */ |
283 | ||
8682223f KH |
284 | /* Output assembly language code for the function prologue. */ |
285 | ||
08c148a8 NB |
286 | static void |
287 | h8300_output_function_prologue (file, size) | |
07aae5c2 | 288 | FILE *file; |
08c148a8 | 289 | HOST_WIDE_INT size; |
07aae5c2 | 290 | { |
8682223f | 291 | int fsize = round_frame_size (size); |
07aae5c2 | 292 | int idx; |
8682223f | 293 | int saved_regs; |
cda4bd43 | 294 | int n_regs; |
07aae5c2 | 295 | |
dd07092e JL |
296 | /* Note a function with the interrupt attribute and set interrupt_handler |
297 | accordingly. */ | |
f5b65a56 JL |
298 | if (h8300_interrupt_function_p (current_function_decl)) |
299 | interrupt_handler = 1; | |
300 | ||
fabe72bb JL |
301 | /* If the current function has the OS_Task attribute set, then |
302 | we have a naked prologue. */ | |
303 | if (h8300_os_task_function_p (current_function_decl)) | |
304 | { | |
305 | fprintf (file, ";OS_Task prologue\n"); | |
306 | os_task = 1; | |
307 | return; | |
308 | } | |
309 | ||
310 | if (h8300_monitor_function_p (current_function_decl)) | |
311 | { | |
312 | /* My understanding of monitor functions is they act just | |
313 | like interrupt functions, except the prologue must | |
314 | mask interrupts. */ | |
315 | fprintf (file, ";monitor prologue\n"); | |
316 | interrupt_handler = 1; | |
317 | monitor = 1; | |
ea3a7ffa JL |
318 | if (TARGET_H8300) |
319 | { | |
320 | fprintf (file, "\tsubs\t#2,sp\n"); | |
8682223f | 321 | push (file, 0); |
ea3a7ffa | 322 | fprintf (file, "\tstc\tccr,r0l\n"); |
46d00fef KH |
323 | fprintf (file, "\tmov.b\tr0l,@(2,sp)\n"); |
324 | pop (file, 0); | |
ea3a7ffa | 325 | fprintf (file, "\torc\t#128,ccr\n"); |
46d00fef KH |
326 | } |
327 | else if (TARGET_H8300H) | |
328 | { | |
329 | push (file, 0); | |
330 | fprintf (file, "\tstc\tccr,r0l\n"); | |
ea3a7ffa | 331 | fprintf (file, "\tmov.b\tr0l,@(4,sp)\n"); |
46d00fef KH |
332 | pop (file, 0); |
333 | fprintf (file, "\torc\t#128,ccr\n"); | |
ea3a7ffa | 334 | } |
46d00fef | 335 | else if (TARGET_H8300S) |
ea3a7ffa | 336 | { |
46d00fef | 337 | fprintf (file, "\tstc\texr,@-sp\n"); |
8682223f | 338 | push (file, 0); |
ea3a7ffa | 339 | fprintf (file, "\tstc\tccr,r0l\n"); |
46d00fef KH |
340 | fprintf (file, "\tmov.b\tr0l,@(6,sp)\n"); |
341 | pop (file, 0); | |
ea3a7ffa | 342 | fprintf (file, "\torc\t#128,ccr\n"); |
ea3a7ffa | 343 | } |
46d00fef KH |
344 | else |
345 | abort (); | |
fabe72bb JL |
346 | } |
347 | ||
48837e29 DE |
348 | if (frame_pointer_needed) |
349 | { | |
07e4d94e | 350 | /* Push fp. */ |
8682223f | 351 | push (file, FRAME_POINTER_REGNUM); |
48837e29 DE |
352 | fprintf (file, "\t%s\t%s,%s\n", h8_mov_op, |
353 | h8_reg_names[STACK_POINTER_REGNUM], | |
354 | h8_reg_names[FRAME_POINTER_REGNUM]); | |
a1616dd9 | 355 | } |
48837e29 | 356 | |
07e4d94e | 357 | /* Leave room for locals. */ |
a1616dd9 | 358 | dosize (file, "sub", fsize); |
07aae5c2 | 359 | |
8682223f KH |
360 | /* Push the rest of the registers in ascending order. */ |
361 | saved_regs = compute_saved_regs (); | |
cda4bd43 KH |
362 | for (idx = 0; idx < FIRST_PSEUDO_REGISTER; idx += n_regs) |
363 | { | |
8682223f | 364 | int regno = idx; |
cda4bd43 KH |
365 | |
366 | n_regs = 1; | |
8682223f | 367 | if (saved_regs & (1 << regno)) |
a1616dd9 JL |
368 | { |
369 | if (TARGET_H8300S) | |
370 | { | |
cda4bd43 KH |
371 | /* See how many registers we can push at the same time. */ |
372 | if ((regno == 0 || regno == 4) | |
8682223f | 373 | && ((saved_regs >> regno) & 0x0f) == 0x0f) |
cda4bd43 KH |
374 | n_regs = 4; |
375 | ||
376 | else if ((regno == 0 || regno == 4) | |
8682223f | 377 | && ((saved_regs >> regno) & 0x07) == 0x07) |
cda4bd43 KH |
378 | n_regs = 3; |
379 | ||
380 | else if ((regno == 0 || regno == 2 || regno == 4 || regno == 6) | |
8682223f | 381 | && ((saved_regs >> regno) & 0x03) == 0x03) |
cda4bd43 | 382 | n_regs = 2; |
a1616dd9 | 383 | } |
cda4bd43 KH |
384 | |
385 | if (n_regs == 1) | |
8682223f | 386 | push (file, regno); |
cda4bd43 KH |
387 | else |
388 | fprintf (file, "\tstm.l\t%s-%s,@-sp\n", | |
389 | h8_reg_names[regno], | |
390 | h8_reg_names[regno + (n_regs - 1)]); | |
07aae5c2 SC |
391 | } |
392 | } | |
393 | } | |
394 | ||
395 | /* Output assembly language code for the function epilogue. */ | |
396 | ||
08c148a8 NB |
397 | static void |
398 | h8300_output_function_epilogue (file, size) | |
07aae5c2 | 399 | FILE *file; |
08c148a8 | 400 | HOST_WIDE_INT size; |
07aae5c2 | 401 | { |
8682223f | 402 | int fsize = round_frame_size (size); |
07aae5c2 SC |
403 | int idx; |
404 | rtx insn = get_last_insn (); | |
8682223f | 405 | int saved_regs; |
cda4bd43 | 406 | int n_regs; |
07aae5c2 | 407 | |
fabe72bb JL |
408 | if (os_task) |
409 | { | |
410 | /* OS_Task epilogues are nearly naked -- they just have an | |
411 | rts instruction. */ | |
412 | fprintf (file, ";OS_task epilogue\n"); | |
413 | fprintf (file, "\trts\n"); | |
414 | goto out; | |
415 | } | |
416 | ||
07e4d94e | 417 | /* Monitor epilogues are the same as interrupt function epilogues. |
fabe72bb JL |
418 | Just make a note that we're in an monitor epilogue. */ |
419 | if (monitor) | |
07e4d94e | 420 | fprintf (file, ";monitor epilogue\n"); |
fabe72bb | 421 | |
07aae5c2 SC |
422 | /* If the last insn was a BARRIER, we don't have to write any code. */ |
423 | if (GET_CODE (insn) == NOTE) | |
424 | insn = prev_nonnote_insn (insn); | |
425 | if (insn && GET_CODE (insn) == BARRIER) | |
f40a8c03 | 426 | goto out; |
07aae5c2 | 427 | |
8682223f KH |
428 | /* Pop the saved registers in descending order. */ |
429 | saved_regs = compute_saved_regs (); | |
cda4bd43 KH |
430 | for (idx = 0; idx < FIRST_PSEUDO_REGISTER; idx += n_regs) |
431 | { | |
8682223f | 432 | int regno = (FIRST_PSEUDO_REGISTER - 1) - idx; |
cda4bd43 KH |
433 | |
434 | n_regs = 1; | |
8682223f | 435 | if (saved_regs & (1 << regno)) |
07aae5c2 | 436 | { |
a1616dd9 JL |
437 | if (TARGET_H8300S) |
438 | { | |
cda4bd43 KH |
439 | /* See how many registers we can pop at the same time. */ |
440 | if ((regno == 7 || regno == 3) | |
8682223f | 441 | && ((saved_regs >> (regno - 3)) & 0x0f) == 0x0f) |
cda4bd43 KH |
442 | n_regs = 4; |
443 | ||
444 | else if ((regno == 6 || regno == 2) | |
8682223f | 445 | && ((saved_regs >> (regno - 2)) & 0x07) == 0x07) |
cda4bd43 KH |
446 | n_regs = 3; |
447 | ||
448 | else if ((regno == 7 || regno == 5 || regno == 3 || regno == 1) | |
8682223f | 449 | && ((saved_regs >> (regno - 1)) & 0x03) == 0x03) |
cda4bd43 | 450 | n_regs = 2; |
a1616dd9 | 451 | } |
cda4bd43 KH |
452 | |
453 | if (n_regs == 1) | |
8682223f | 454 | pop (file, regno); |
cda4bd43 KH |
455 | else |
456 | fprintf (file, "\tldm.l\t@sp+,%s-%s\n", | |
457 | h8_reg_names[regno - (n_regs - 1)], | |
458 | h8_reg_names[regno]); | |
07aae5c2 | 459 | } |
07aae5c2 | 460 | } |
48837e29 | 461 | |
07e4d94e | 462 | /* Deallocate locals. */ |
a1616dd9 JL |
463 | dosize (file, "add", fsize); |
464 | ||
07e4d94e | 465 | /* Pop frame pointer if we had one. */ |
a1616dd9 | 466 | if (frame_pointer_needed) |
8682223f | 467 | pop (file, FRAME_POINTER_REGNUM); |
a1616dd9 | 468 | |
dd07092e JL |
469 | if (interrupt_handler) |
470 | fprintf (file, "\trte\n"); | |
07aae5c2 | 471 | else |
dd07092e | 472 | fprintf (file, "\trts\n"); |
07aae5c2 | 473 | |
07e4d94e | 474 | out: |
f5b65a56 | 475 | interrupt_handler = 0; |
fabe72bb JL |
476 | os_task = 0; |
477 | monitor = 0; | |
07aae5c2 | 478 | pragma_saveall = 0; |
48837e29 DE |
479 | } |
480 | ||
481 | /* Output assembly code for the start of the file. */ | |
482 | ||
441d04c6 | 483 | void |
48837e29 DE |
484 | asm_file_start (file) |
485 | FILE *file; | |
486 | { | |
487 | fprintf (file, ";\tGCC For the Hitachi H8/300\n"); | |
488 | fprintf (file, ";\tBy Hitachi America Ltd and Cygnus Support\n"); | |
48837e29 DE |
489 | if (optimize) |
490 | fprintf (file, "; -O%d\n", optimize); | |
491 | if (TARGET_H8300H) | |
492 | fprintf (file, "\n\t.h8300h\n"); | |
a1616dd9 JL |
493 | else if (TARGET_H8300S) |
494 | fprintf (file, "\n\t.h8300s\n"); | |
48837e29 DE |
495 | else |
496 | fprintf (file, "\n\n"); | |
497 | output_file_directive (file, main_input_filename); | |
498 | } | |
499 | ||
500 | /* Output assembly language code for the end of file. */ | |
501 | ||
502 | void | |
503 | asm_file_end (file) | |
504 | FILE *file; | |
505 | { | |
506 | fprintf (file, "\t.end\n"); | |
07aae5c2 SC |
507 | } |
508 | \f | |
48837e29 DE |
509 | /* Return true if VALUE is a valid constant for constraint 'P'. |
510 | IE: VALUE is a power of two <= 2**15. */ | |
07aae5c2 SC |
511 | |
512 | int | |
48837e29 | 513 | small_power_of_two (value) |
009ac3d3 | 514 | HOST_WIDE_INT value; |
07aae5c2 | 515 | { |
009ac3d3 RH |
516 | int power = exact_log2 (value); |
517 | return power >= 0 && power <= 15; | |
07aae5c2 SC |
518 | } |
519 | ||
48837e29 DE |
520 | /* Return true if VALUE is a valid constant for constraint 'O', which |
521 | means that the constant would be ok to use as a bit for a bclr | |
522 | instruction. */ | |
523 | ||
524 | int | |
525 | ok_for_bclr (value) | |
009ac3d3 | 526 | HOST_WIDE_INT value; |
48837e29 DE |
527 | { |
528 | return small_power_of_two ((~value) & 0xff); | |
529 | } | |
530 | ||
68560db3 | 531 | /* Return true if OP is a valid source operand for an integer move |
07aae5c2 | 532 | instruction. */ |
48837e29 | 533 | |
07aae5c2 SC |
534 | int |
535 | general_operand_src (op, mode) | |
536 | rtx op; | |
537 | enum machine_mode mode; | |
538 | { | |
48837e29 DE |
539 | if (GET_CODE (op) == MEM && GET_CODE (XEXP (op, 0)) == POST_INC) |
540 | return 1; | |
07aae5c2 SC |
541 | return general_operand (op, mode); |
542 | } | |
543 | ||
544 | /* Return true if OP is a valid destination operand for an integer move | |
5660465a | 545 | instruction. */ |
48837e29 | 546 | |
07aae5c2 SC |
547 | int |
548 | general_operand_dst (op, mode) | |
549 | rtx op; | |
550 | enum machine_mode mode; | |
551 | { | |
48837e29 DE |
552 | if (GET_CODE (op) == MEM && GET_CODE (XEXP (op, 0)) == PRE_DEC) |
553 | return 1; | |
07aae5c2 SC |
554 | return general_operand (op, mode); |
555 | } | |
48837e29 DE |
556 | |
557 | /* Return true if OP is a const valid for a bit clear instruction. */ | |
558 | ||
559 | int | |
560 | o_operand (operand, mode) | |
561 | rtx operand; | |
441d04c6 | 562 | enum machine_mode mode ATTRIBUTE_UNUSED; |
48837e29 DE |
563 | { |
564 | return (GET_CODE (operand) == CONST_INT | |
565 | && CONST_OK_FOR_O (INTVAL (operand))); | |
566 | } | |
567 | ||
568 | /* Return true if OP is a const valid for a bit set or bit xor instruction. */ | |
569 | ||
570 | int | |
571 | p_operand (operand, mode) | |
572 | rtx operand; | |
441d04c6 | 573 | enum machine_mode mode ATTRIBUTE_UNUSED; |
48837e29 DE |
574 | { |
575 | return (GET_CODE (operand) == CONST_INT | |
576 | && CONST_OK_FOR_P (INTVAL (operand))); | |
577 | } | |
578 | ||
579 | /* Return true if OP is a valid call operand. */ | |
580 | ||
581 | int | |
582 | call_insn_operand (op, mode) | |
583 | rtx op; | |
441d04c6 | 584 | enum machine_mode mode ATTRIBUTE_UNUSED; |
48837e29 DE |
585 | { |
586 | if (GET_CODE (op) == MEM) | |
587 | { | |
588 | rtx inside = XEXP (op, 0); | |
589 | if (register_operand (inside, Pmode)) | |
590 | return 1; | |
591 | if (CONSTANT_ADDRESS_P (inside)) | |
592 | return 1; | |
593 | } | |
594 | return 0; | |
595 | } | |
596 | ||
22c9a795 | 597 | /* Return 1 if an addition/subtraction of a constant integer can be |
997e5af8 | 598 | transformed into two consecutive adds/subs that are faster than the |
22c9a795 | 599 | straightforward way. Otherwise, return 0. */ |
997e5af8 | 600 | |
3b7d443c | 601 | int |
009ac3d3 | 602 | two_insn_adds_subs_operand (op, mode) |
3b7d443c | 603 | rtx op; |
997e5af8 | 604 | enum machine_mode mode; |
3b7d443c JL |
605 | { |
606 | if (GET_CODE (op) == CONST_INT) | |
607 | { | |
009ac3d3 | 608 | HOST_WIDE_INT value = INTVAL (op); |
3b7d443c | 609 | |
997e5af8 KH |
610 | /* Force VALUE to be positive so that we do not have to consider |
611 | the negative case. */ | |
612 | if (value < 0) | |
613 | value = -value; | |
009ac3d3 RH |
614 | if (TARGET_H8300H || TARGET_H8300S) |
615 | { | |
997e5af8 KH |
616 | /* A constant addition/subtraction takes 2 states in QImode, |
617 | 4 states in HImode, and 6 states in SImode. Thus, the | |
618 | only case we can win is when SImode is used, in which | |
c59ff527 | 619 | case, two adds/subs are used, taking 4 states. */ |
997e5af8 KH |
620 | if (mode == SImode |
621 | && (value == 2 + 1 | |
622 | || value == 4 + 1 | |
623 | || value == 4 + 2 | |
624 | || value == 4 + 4)) | |
22c9a795 | 625 | return 1; |
009ac3d3 RH |
626 | } |
627 | else | |
628 | { | |
997e5af8 KH |
629 | /* A constant addition/subtraction takes 2 states in |
630 | QImode. It takes 6 states in HImode, requiring the | |
631 | constant to be loaded to a register first, and a lot more | |
632 | in SImode. Thus the only case we can win is when either | |
633 | HImode or SImode is used. */ | |
634 | if (mode != QImode | |
635 | && (value == 2 + 1 | |
636 | || value == 2 + 2)) | |
009ac3d3 RH |
637 | return 1; |
638 | } | |
639 | } | |
e6219736 | 640 | |
e6219736 JL |
641 | return 0; |
642 | } | |
643 | ||
009ac3d3 RH |
644 | /* Split an add of a small constant into two adds/subs insns. */ |
645 | ||
646 | void | |
647 | split_adds_subs (mode, operands) | |
648 | enum machine_mode mode; | |
3b7d443c JL |
649 | rtx *operands; |
650 | { | |
009ac3d3 RH |
651 | HOST_WIDE_INT val = INTVAL (operands[1]); |
652 | rtx reg = operands[0]; | |
9492393e KH |
653 | HOST_WIDE_INT sign = 1; |
654 | HOST_WIDE_INT amount; | |
3b7d443c | 655 | |
9492393e KH |
656 | /* Force VAL to be positive so that we do not have to consider the |
657 | sign. */ | |
658 | if (val < 0) | |
3b7d443c | 659 | { |
9492393e KH |
660 | val = -val; |
661 | sign = -1; | |
662 | } | |
3b7d443c | 663 | |
9492393e KH |
664 | /* Try different amounts in descending order. */ |
665 | for (amount = (TARGET_H8300H || TARGET_H8300S) ? 4 : 2; | |
666 | amount > 0; | |
667 | amount /= 2) | |
668 | { | |
1a63219b | 669 | for (; val >= amount; val -= amount) |
009ac3d3 | 670 | { |
9492393e | 671 | rtx tmp = gen_rtx_PLUS (mode, reg, GEN_INT (sign * amount)); |
009ac3d3 | 672 | emit_insn (gen_rtx_SET (VOIDmode, reg, tmp)); |
009ac3d3 | 673 | } |
3b7d443c JL |
674 | } |
675 | ||
9492393e | 676 | return; |
3b7d443c JL |
677 | } |
678 | ||
f5b65a56 JL |
679 | /* Return true if OP is a valid call operand, and OP represents |
680 | an operand for a small call (4 bytes instead of 6 bytes). */ | |
681 | ||
682 | int | |
683 | small_call_insn_operand (op, mode) | |
684 | rtx op; | |
441d04c6 | 685 | enum machine_mode mode ATTRIBUTE_UNUSED; |
f5b65a56 JL |
686 | { |
687 | if (GET_CODE (op) == MEM) | |
688 | { | |
689 | rtx inside = XEXP (op, 0); | |
690 | ||
691 | /* Register indirect is a small call. */ | |
692 | if (register_operand (inside, Pmode)) | |
693 | return 1; | |
694 | ||
695 | /* A call through the function vector is a small | |
696 | call too. */ | |
697 | if (GET_CODE (inside) == SYMBOL_REF | |
698 | && SYMBOL_REF_FLAG (inside)) | |
699 | return 1; | |
700 | } | |
701 | /* Otherwise it's a large call. */ | |
702 | return 0; | |
703 | } | |
704 | ||
48837e29 DE |
705 | /* Return true if OP is a valid jump operand. */ |
706 | ||
707 | int | |
708 | jump_address_operand (op, mode) | |
709 | rtx op; | |
710 | enum machine_mode mode; | |
711 | { | |
712 | if (GET_CODE (op) == REG) | |
713 | return mode == Pmode; | |
714 | ||
715 | if (GET_CODE (op) == MEM) | |
716 | { | |
717 | rtx inside = XEXP (op, 0); | |
718 | if (register_operand (inside, Pmode)) | |
719 | return 1; | |
720 | if (CONSTANT_ADDRESS_P (inside)) | |
721 | return 1; | |
722 | } | |
723 | return 0; | |
724 | } | |
725 | ||
726 | /* Recognize valid operands for bitfield instructions. */ | |
727 | ||
728 | extern int rtx_equal_function_value_matters; | |
729 | ||
730 | int | |
731 | bit_operand (op, mode) | |
732 | rtx op; | |
733 | enum machine_mode mode; | |
734 | { | |
735 | /* We can except any general operand, expept that MEM operands must | |
736 | be limited to those that use addresses valid for the 'U' constraint. */ | |
737 | if (!general_operand (op, mode)) | |
738 | return 0; | |
739 | ||
740 | /* Accept any mem during RTL generation. Otherwise, the code that does | |
741 | insv and extzv will think that we can not handle memory. However, | |
742 | to avoid reload problems, we only accept 'U' MEM operands after RTL | |
743 | generation. This means that any named pattern which uses this predicate | |
744 | must force its operands to match 'U' before emitting RTL. */ | |
745 | ||
746 | if (GET_CODE (op) == REG) | |
747 | return 1; | |
748 | if (GET_CODE (op) == SUBREG) | |
749 | return 1; | |
750 | if (!rtx_equal_function_value_matters) | |
07e4d94e KH |
751 | /* We're building rtl. */ |
752 | return GET_CODE (op) == MEM; | |
48837e29 | 753 | else |
07e4d94e KH |
754 | return (GET_CODE (op) == MEM |
755 | && EXTRA_CONSTRAINT (op, 'U')); | |
48837e29 DE |
756 | } |
757 | ||
887a8bd9 JL |
758 | int |
759 | bit_memory_operand (op, mode) | |
760 | rtx op; | |
441d04c6 | 761 | enum machine_mode mode ATTRIBUTE_UNUSED; |
887a8bd9 JL |
762 | { |
763 | return (GET_CODE (op) == MEM | |
764 | && EXTRA_CONSTRAINT (op, 'U')); | |
765 | } | |
766 | ||
48837e29 DE |
767 | /* Recognize valid operators for bit test. */ |
768 | ||
769 | int | |
770 | eq_operator (x, mode) | |
771 | rtx x; | |
441d04c6 | 772 | enum machine_mode mode ATTRIBUTE_UNUSED; |
48837e29 DE |
773 | { |
774 | return (GET_CODE (x) == EQ || GET_CODE (x) == NE); | |
775 | } | |
776 | ||
07aae5c2 | 777 | /* Handle machine specific pragmas for compatibility with existing |
48837e29 | 778 | compilers for the H8/300. |
07aae5c2 SC |
779 | |
780 | pragma saveall generates prolog/epilog code which saves and | |
781 | restores all the registers on function entry. | |
48837e29 | 782 | |
07aae5c2 SC |
783 | pragma interrupt saves and restores all registers, and exits with |
784 | an rte instruction rather than an rts. A pointer to a function | |
785 | with this attribute may be safely used in an interrupt vector. */ | |
48837e29 | 786 | |
8b97c5f8 ZW |
787 | void |
788 | h8300_pr_interrupt (pfile) | |
789 | cpp_reader *pfile ATTRIBUTE_UNUSED; | |
07aae5c2 | 790 | { |
8b97c5f8 ZW |
791 | interrupt_handler = 1; |
792 | } | |
05a81fe5 | 793 | |
8b97c5f8 ZW |
794 | void |
795 | h8300_pr_saveall (pfile) | |
796 | cpp_reader *pfile ATTRIBUTE_UNUSED; | |
797 | { | |
798 | pragma_saveall = 1; | |
07aae5c2 | 799 | } |
8b97c5f8 | 800 | |
07aae5c2 SC |
801 | /* If the next arg with MODE and TYPE is to be passed in a register, return |
802 | the rtx to represent where it is passed. CUM represents the state after | |
803 | the last argument. NAMED is not used. */ | |
804 | ||
441d04c6 | 805 | static const char *const hand_list[] = |
48837e29 DE |
806 | { |
807 | "__main", | |
808 | "__cmpsi2", | |
809 | "__divhi3", | |
810 | "__modhi3", | |
811 | "__udivhi3", | |
812 | "__umodhi3", | |
813 | "__divsi3", | |
814 | "__modsi3", | |
815 | "__udivsi3", | |
816 | "__umodsi3", | |
817 | "__mulhi3", | |
818 | "__mulsi3", | |
819 | "__reg_memcpy", | |
820 | "__reg_memset", | |
821 | "__ucmpsi2", | |
822 | 0, | |
823 | }; | |
824 | ||
825 | /* Return an RTX to represent where a value with mode MODE will be returned | |
826 | from a function. If the result is 0, the argument is pushed. */ | |
827 | ||
07aae5c2 SC |
828 | rtx |
829 | function_arg (cum, mode, type, named) | |
830 | CUMULATIVE_ARGS *cum; | |
831 | enum machine_mode mode; | |
832 | tree type; | |
833 | int named; | |
834 | { | |
835 | rtx result = 0; | |
441d04c6 | 836 | const char *fname; |
48837e29 DE |
837 | int regpass = 0; |
838 | ||
dd07092e JL |
839 | /* Never pass unnamed arguments in registers. */ |
840 | if (!named) | |
841 | return 0; | |
842 | ||
48837e29 DE |
843 | /* Pass 3 regs worth of data in regs when user asked on the command line. */ |
844 | if (TARGET_QUICKCALL) | |
845 | regpass = 3; | |
846 | ||
847 | /* If calling hand written assembler, use 4 regs of args. */ | |
848 | ||
849 | if (cum->libcall) | |
850 | { | |
441d04c6 | 851 | const char * const *p; |
48837e29 DE |
852 | |
853 | fname = XSTR (cum->libcall, 0); | |
854 | ||
855 | /* See if this libcall is one of the hand coded ones. */ | |
07aae5c2 | 856 | |
48837e29 DE |
857 | for (p = hand_list; *p && strcmp (*p, fname) != 0; p++) |
858 | ; | |
07aae5c2 | 859 | |
48837e29 DE |
860 | if (*p) |
861 | regpass = 4; | |
862 | } | |
863 | ||
864 | if (regpass) | |
865 | { | |
866 | int size; | |
867 | ||
868 | if (mode == BLKmode) | |
869 | size = int_size_in_bytes (type); | |
870 | else | |
871 | size = GET_MODE_SIZE (mode); | |
872 | ||
873 | if (size + cum->nbytes > regpass * UNITS_PER_WORD) | |
874 | { | |
875 | result = 0; | |
876 | } | |
877 | else | |
878 | { | |
879 | switch (cum->nbytes / UNITS_PER_WORD) | |
880 | { | |
881 | case 0: | |
c5c76735 | 882 | result = gen_rtx_REG (mode, 0); |
48837e29 DE |
883 | break; |
884 | case 1: | |
c5c76735 | 885 | result = gen_rtx_REG (mode, 1); |
48837e29 DE |
886 | break; |
887 | case 2: | |
c5c76735 | 888 | result = gen_rtx_REG (mode, 2); |
48837e29 DE |
889 | break; |
890 | case 3: | |
c5c76735 | 891 | result = gen_rtx_REG (mode, 3); |
48837e29 DE |
892 | break; |
893 | default: | |
894 | result = 0; | |
895 | } | |
896 | } | |
897 | } | |
07aae5c2 | 898 | |
48837e29 DE |
899 | return result; |
900 | } | |
901 | \f | |
902 | /* Return the cost of the rtx R with code CODE. */ | |
07aae5c2 | 903 | |
48837e29 DE |
904 | int |
905 | const_costs (r, c) | |
906 | rtx r; | |
907 | enum rtx_code c; | |
908 | { | |
909 | switch (c) | |
07aae5c2 | 910 | { |
48837e29 DE |
911 | case CONST_INT: |
912 | switch (INTVAL (r)) | |
07aae5c2 SC |
913 | { |
914 | case 0: | |
48837e29 | 915 | case 1: |
07aae5c2 | 916 | case 2: |
48837e29 DE |
917 | case -1: |
918 | case -2: | |
07aae5c2 | 919 | return 0; |
5ae5999c JL |
920 | case 4: |
921 | case -4: | |
a1616dd9 | 922 | if (TARGET_H8300H || TARGET_H8300S) |
5ae5999c JL |
923 | return 0; |
924 | else | |
925 | return 1; | |
48837e29 DE |
926 | default: |
927 | return 1; | |
07aae5c2 | 928 | } |
48837e29 DE |
929 | |
930 | case CONST: | |
931 | case LABEL_REF: | |
932 | case SYMBOL_REF: | |
933 | return 3; | |
934 | ||
935 | case CONST_DOUBLE: | |
936 | return 20; | |
937 | ||
938 | default: | |
939 | return 4; | |
07aae5c2 | 940 | } |
07aae5c2 | 941 | } |
48837e29 | 942 | \f |
07aae5c2 SC |
943 | /* Documentation for the machine specific operand escapes: |
944 | ||
e8205901 | 945 | 'A' print rn in H8/300 mode, erN in H8/300H mode |
07aae5c2 | 946 | 'C' print (operand - 2). |
48837e29 DE |
947 | 'E' like s but negative. |
948 | 'F' like t but negative. | |
949 | 'G' constant just the negative | |
07aae5c2 | 950 | 'M' turn a 'M' constant into its negative mod 2. |
48837e29 | 951 | 'P' if operand is incing/decing sp, print .w, otherwise .b. |
15dc331e JL |
952 | 'R' print operand as a byte:8 address if appropriate, else fall back to |
953 | 'X' handling. | |
48837e29 | 954 | 'S' print operand as a long word |
07aae5c2 | 955 | 'T' print operand as a word |
48837e29 DE |
956 | 'U' if operand is incing/decing sp, print l, otherwise nothing. |
957 | 'V' find the set bit, and print its number. | |
958 | 'W' find the clear bit, and print its number. | |
959 | 'X' print operand as a byte | |
07aae5c2 | 960 | 'Y' print either l or h depending on whether last 'Z' operand < 8 or >= 8. |
15dc331e | 961 | If this operand isn't a register, fall back to 'R' handling. |
48837e29 DE |
962 | 'Z' print int & 7. |
963 | 'b' print the bit opcode | |
964 | 'c' print the ibit opcode | |
965 | 'd' bcc if EQ, bcs if NE | |
966 | 'e' first word of 32 bit value - if reg, then least reg. if mem | |
967 | then least. if const then most sig word | |
968 | 'f' second word of 32 bit value - if reg, then biggest reg. if mem | |
969 | then +2. if const then least sig word | |
970 | 'g' bcs if EQ, bcc if NE | |
07aae5c2 SC |
971 | 'j' print operand as condition code. |
972 | 'k' print operand as reverse condition code. | |
48837e29 DE |
973 | 's' print as low byte of 16 bit value |
974 | 't' print as high byte of 16 bit value | |
975 | 'w' print as low byte of 32 bit value | |
976 | 'x' print as 2nd byte of 32 bit value | |
977 | 'y' print as 3rd byte of 32 bit value | |
978 | 'z' print as msb of 32 bit value | |
979 | */ | |
07aae5c2 SC |
980 | |
981 | /* Return assembly language string which identifies a comparison type. */ | |
982 | ||
441d04c6 | 983 | static const char * |
07aae5c2 SC |
984 | cond_string (code) |
985 | enum rtx_code code; | |
986 | { | |
987 | switch (code) | |
988 | { | |
989 | case NE: | |
990 | return "ne"; | |
991 | case EQ: | |
992 | return "eq"; | |
993 | case GE: | |
994 | return "ge"; | |
995 | case GT: | |
996 | return "gt"; | |
997 | case LE: | |
998 | return "le"; | |
999 | case LT: | |
1000 | return "lt"; | |
1001 | case GEU: | |
1002 | return "hs"; | |
1003 | case GTU: | |
1004 | return "hi"; | |
1005 | case LEU: | |
1006 | return "ls"; | |
1007 | case LTU: | |
1008 | return "lo"; | |
1009 | default: | |
1010 | abort (); | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | /* Print operand X using operand code CODE to assembly language output file | |
1015 | FILE. */ | |
1016 | ||
1017 | void | |
1018 | print_operand (file, x, code) | |
1019 | FILE *file; | |
1020 | rtx x; | |
1021 | int code; | |
1022 | { | |
07aae5c2 | 1023 | /* This is used for communication between the 'P' and 'U' codes. */ |
441d04c6 | 1024 | static const char *last_p; |
07aae5c2 | 1025 | |
269c14e1 | 1026 | /* This is used for communication between codes V,W,Z and Y. */ |
07aae5c2 SC |
1027 | static int bitint; |
1028 | ||
1029 | switch (code) | |
1030 | { | |
48837e29 | 1031 | case 'A': |
07aae5c2 | 1032 | if (GET_CODE (x) == REG) |
48837e29 | 1033 | fprintf (file, "%s", h8_reg_names[REGNO (x)]); |
07aae5c2 SC |
1034 | else |
1035 | goto def; | |
1036 | break; | |
48837e29 DE |
1037 | case 'C': |
1038 | fprintf (file, "#%d", INTVAL (x) - 2); | |
1039 | break; | |
1040 | case 'E': | |
1041 | switch (GET_CODE (x)) | |
1042 | { | |
1043 | case REG: | |
1044 | fprintf (file, "%sl", names_big[REGNO (x)]); | |
1045 | break; | |
1046 | case CONST_INT: | |
1047 | fprintf (file, "#%d", (-INTVAL (x)) & 0xff); | |
1048 | break; | |
1049 | default: | |
1050 | abort (); | |
1051 | } | |
1052 | break; | |
1053 | case 'F': | |
1054 | switch (GET_CODE (x)) | |
1055 | { | |
1056 | case REG: | |
1057 | fprintf (file, "%sh", names_big[REGNO (x)]); | |
1058 | break; | |
1059 | case CONST_INT: | |
1060 | fprintf (file, "#%d", ((-INTVAL (x)) & 0xff00) >> 8); | |
1061 | break; | |
1062 | default: | |
1063 | abort (); | |
1064 | } | |
1065 | break; | |
07aae5c2 SC |
1066 | case 'G': |
1067 | if (GET_CODE (x) != CONST_INT) | |
1068 | abort (); | |
1069 | fprintf (file, "#%d", 0xff & (-INTVAL (x))); | |
1070 | break; | |
48837e29 DE |
1071 | case 'M': |
1072 | /* For 3/-3 and 4/-4, the other 2 is handled separately. */ | |
1073 | switch (INTVAL (x)) | |
1074 | { | |
1075 | case 2: | |
1076 | case 4: | |
1077 | case -2: | |
1078 | case -4: | |
1079 | fprintf (file, "#2"); | |
1080 | break; | |
1081 | case 1: | |
1082 | case 3: | |
1083 | case -1: | |
1084 | case -3: | |
1085 | fprintf (file, "#1"); | |
1086 | break; | |
1087 | default: | |
1088 | abort (); | |
1089 | } | |
07aae5c2 | 1090 | break; |
48837e29 DE |
1091 | case 'P': |
1092 | if (REGNO (XEXP (XEXP (x, 0), 0)) == STACK_POINTER_REGNUM) | |
1093 | { | |
1094 | last_p = ""; | |
1095 | fprintf (file, ".w"); | |
1096 | } | |
07aae5c2 | 1097 | else |
48837e29 DE |
1098 | { |
1099 | last_p = "l"; | |
1100 | fprintf (file, ".b"); | |
1101 | } | |
07aae5c2 | 1102 | break; |
48837e29 DE |
1103 | case 'S': |
1104 | if (GET_CODE (x) == REG) | |
1105 | fprintf (file, "%s", names_extended[REGNO (x)]); | |
07aae5c2 | 1106 | else |
48837e29 | 1107 | goto def; |
07aae5c2 | 1108 | break; |
48837e29 DE |
1109 | case 'T': |
1110 | if (GET_CODE (x) == REG) | |
1111 | fprintf (file, "%s", names_big[REGNO (x)]); | |
07aae5c2 | 1112 | else |
48837e29 | 1113 | goto def; |
07aae5c2 | 1114 | break; |
48837e29 DE |
1115 | case 'U': |
1116 | fprintf (file, "%s%s", names_big[REGNO (x)], last_p); | |
07aae5c2 | 1117 | break; |
48837e29 DE |
1118 | case 'V': |
1119 | bitint = exact_log2 (INTVAL (x)); | |
1120 | if (bitint == -1) | |
07aae5c2 | 1121 | abort (); |
07aae5c2 SC |
1122 | fprintf (file, "#%d", bitint & 7); |
1123 | break; | |
48837e29 | 1124 | case 'W': |
07aae5c2 SC |
1125 | bitint = exact_log2 ((~INTVAL (x)) & 0xff); |
1126 | if (bitint == -1) | |
1127 | abort (); | |
1128 | fprintf (file, "#%d", bitint & 7); | |
1129 | break; | |
15dc331e | 1130 | case 'R': |
48837e29 DE |
1131 | case 'X': |
1132 | if (GET_CODE (x) == REG) | |
1133 | fprintf (file, "%s", byte_reg (x, 0)); | |
1134 | else | |
1135 | goto def; | |
1136 | break; | |
1137 | case 'Y': | |
07aae5c2 SC |
1138 | if (bitint == -1) |
1139 | abort (); | |
48837e29 DE |
1140 | if (GET_CODE (x) == REG) |
1141 | fprintf (file, "%s%c", names_big[REGNO (x)], bitint > 7 ? 'h' : 'l'); | |
1142 | else | |
15dc331e | 1143 | print_operand (file, x, 'R'); |
48837e29 DE |
1144 | bitint = -1; |
1145 | break; | |
1146 | case 'Z': | |
1147 | bitint = INTVAL (x); | |
07aae5c2 SC |
1148 | fprintf (file, "#%d", bitint & 7); |
1149 | break; | |
48837e29 DE |
1150 | case 'b': |
1151 | switch (GET_CODE (x)) | |
07aae5c2 | 1152 | { |
48837e29 DE |
1153 | case IOR: |
1154 | fprintf (file, "bor"); | |
1155 | break; | |
1156 | case XOR: | |
1157 | fprintf (file, "bxor"); | |
1158 | break; | |
1159 | case AND: | |
1160 | fprintf (file, "band"); | |
1161 | break; | |
441d04c6 KG |
1162 | default: |
1163 | break; | |
07aae5c2 | 1164 | } |
48837e29 DE |
1165 | break; |
1166 | case 'c': | |
1167 | switch (GET_CODE (x)) | |
07aae5c2 | 1168 | { |
48837e29 DE |
1169 | case IOR: |
1170 | fprintf (file, "bior"); | |
1171 | break; | |
1172 | case XOR: | |
1173 | fprintf (file, "bixor"); | |
1174 | break; | |
1175 | case AND: | |
1176 | fprintf (file, "biand"); | |
1177 | break; | |
441d04c6 KG |
1178 | default: |
1179 | break; | |
07aae5c2 SC |
1180 | } |
1181 | break; | |
48837e29 DE |
1182 | case 'd': |
1183 | switch (GET_CODE (x)) | |
07aae5c2 | 1184 | { |
48837e29 DE |
1185 | case EQ: |
1186 | fprintf (file, "bcc"); | |
07aae5c2 | 1187 | break; |
48837e29 DE |
1188 | case NE: |
1189 | fprintf (file, "bcs"); | |
07aae5c2 | 1190 | break; |
07aae5c2 SC |
1191 | default: |
1192 | abort (); | |
1193 | } | |
1194 | break; | |
07aae5c2 SC |
1195 | case 'e': |
1196 | switch (GET_CODE (x)) | |
1197 | { | |
1198 | case REG: | |
48837e29 DE |
1199 | if (TARGET_H8300) |
1200 | fprintf (file, "%s", names_big[REGNO (x)]); | |
1201 | else | |
1202 | fprintf (file, "%s", names_upper_extended[REGNO (x)]); | |
07aae5c2 SC |
1203 | break; |
1204 | case MEM: | |
07aae5c2 SC |
1205 | print_operand (file, x, 0); |
1206 | break; | |
1207 | case CONST_INT: | |
1208 | fprintf (file, "#%d", ((INTVAL (x) >> 16) & 0xffff)); | |
1209 | break; | |
808fbfac JL |
1210 | case CONST_DOUBLE: |
1211 | { | |
1212 | long val; | |
1213 | REAL_VALUE_TYPE rv; | |
1214 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); | |
1215 | REAL_VALUE_TO_TARGET_SINGLE (rv, val); | |
441d04c6 | 1216 | fprintf (file, "#%ld", ((val >> 16) & 0xffff)); |
808fbfac JL |
1217 | break; |
1218 | } | |
07aae5c2 SC |
1219 | default: |
1220 | abort (); | |
1221 | break; | |
1222 | } | |
1223 | break; | |
07aae5c2 SC |
1224 | case 'f': |
1225 | switch (GET_CODE (x)) | |
1226 | { | |
1227 | case REG: | |
48837e29 DE |
1228 | if (TARGET_H8300) |
1229 | fprintf (file, "%s", names_big[REGNO (x) + 1]); | |
1230 | else | |
1231 | fprintf (file, "%s", names_big[REGNO (x)]); | |
07aae5c2 | 1232 | break; |
07aae5c2 | 1233 | case MEM: |
b72f00af | 1234 | x = adjust_address (x, HImode, 2); |
07aae5c2 SC |
1235 | print_operand (file, x, 0); |
1236 | break; | |
07aae5c2 SC |
1237 | case CONST_INT: |
1238 | fprintf (file, "#%d", INTVAL (x) & 0xffff); | |
1239 | break; | |
808fbfac JL |
1240 | case CONST_DOUBLE: |
1241 | { | |
1242 | long val; | |
1243 | REAL_VALUE_TYPE rv; | |
1244 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); | |
1245 | REAL_VALUE_TO_TARGET_SINGLE (rv, val); | |
441d04c6 | 1246 | fprintf (file, "#%ld", (val & 0xffff)); |
808fbfac JL |
1247 | break; |
1248 | } | |
07aae5c2 SC |
1249 | default: |
1250 | abort (); | |
1251 | } | |
1252 | break; | |
48837e29 | 1253 | case 'g': |
07aae5c2 SC |
1254 | switch (GET_CODE (x)) |
1255 | { | |
48837e29 DE |
1256 | case NE: |
1257 | fprintf (file, "bcc"); | |
07aae5c2 | 1258 | break; |
48837e29 DE |
1259 | case EQ: |
1260 | fprintf (file, "bcs"); | |
07aae5c2 | 1261 | break; |
07aae5c2 SC |
1262 | default: |
1263 | abort (); | |
1264 | } | |
1265 | break; | |
07aae5c2 SC |
1266 | case 'j': |
1267 | asm_fprintf (file, cond_string (GET_CODE (x))); | |
1268 | break; | |
07aae5c2 SC |
1269 | case 'k': |
1270 | asm_fprintf (file, cond_string (reverse_condition (GET_CODE (x)))); | |
1271 | break; | |
48837e29 DE |
1272 | case 's': |
1273 | if (GET_CODE (x) == CONST_INT) | |
1274 | fprintf (file, "#%d", (INTVAL (x)) & 0xff); | |
1275 | else | |
1276 | fprintf (file, "%s", byte_reg (x, 0)); | |
1277 | break; | |
1278 | case 't': | |
1279 | if (GET_CODE (x) == CONST_INT) | |
1280 | fprintf (file, "#%d", (INTVAL (x) >> 8) & 0xff); | |
1281 | else | |
1282 | fprintf (file, "%s", byte_reg (x, 1)); | |
1283 | break; | |
1284 | case 'u': | |
1285 | if (GET_CODE (x) != CONST_INT) | |
1286 | abort (); | |
1287 | fprintf (file, "%d", INTVAL (x)); | |
1288 | break; | |
1289 | case 'w': | |
1290 | if (GET_CODE (x) == CONST_INT) | |
1291 | fprintf (file, "#%d", INTVAL (x) & 0xff); | |
1292 | else | |
a1616dd9 JL |
1293 | fprintf (file, "%s", |
1294 | byte_reg (x, TARGET_H8300 ? 2 : 0)); | |
48837e29 DE |
1295 | break; |
1296 | case 'x': | |
1297 | if (GET_CODE (x) == CONST_INT) | |
1298 | fprintf (file, "#%d", (INTVAL (x) >> 8) & 0xff); | |
1299 | else | |
a1616dd9 JL |
1300 | fprintf (file, "%s", |
1301 | byte_reg (x, TARGET_H8300 ? 3 : 1)); | |
48837e29 DE |
1302 | break; |
1303 | case 'y': | |
1304 | if (GET_CODE (x) == CONST_INT) | |
1305 | fprintf (file, "#%d", (INTVAL (x) >> 16) & 0xff); | |
1306 | else | |
1307 | fprintf (file, "%s", byte_reg (x, 0)); | |
1308 | break; | |
1309 | case 'z': | |
1310 | if (GET_CODE (x) == CONST_INT) | |
1311 | fprintf (file, "#%d", (INTVAL (x) >> 24) & 0xff); | |
1312 | else | |
1313 | fprintf (file, "%s", byte_reg (x, 1)); | |
1314 | break; | |
1315 | ||
07aae5c2 | 1316 | default: |
48837e29 | 1317 | def: |
07aae5c2 SC |
1318 | switch (GET_CODE (x)) |
1319 | { | |
1320 | case REG: | |
48837e29 DE |
1321 | switch (GET_MODE (x)) |
1322 | { | |
1323 | case QImode: | |
269c14e1 | 1324 | #if 0 /* Is it asm ("mov.b %0,r2l", ...) */ |
48837e29 DE |
1325 | fprintf (file, "%s", byte_reg (x, 0)); |
1326 | #else /* ... or is it asm ("mov.b %0l,r2l", ...) */ | |
1327 | fprintf (file, "%s", names_big[REGNO (x)]); | |
1328 | #endif | |
1329 | break; | |
1330 | case HImode: | |
1331 | fprintf (file, "%s", names_big[REGNO (x)]); | |
1332 | break; | |
1333 | case SImode: | |
8977e8a7 | 1334 | case SFmode: |
48837e29 DE |
1335 | fprintf (file, "%s", names_extended[REGNO (x)]); |
1336 | break; | |
1337 | default: | |
1338 | abort (); | |
1339 | } | |
07aae5c2 SC |
1340 | break; |
1341 | ||
1342 | case MEM: | |
1343 | fprintf (file, "@"); | |
1344 | output_address (XEXP (x, 0)); | |
15dc331e | 1345 | |
a653b93f VM |
1346 | /* If this is an 'R' operand (reference into the 8-bit |
1347 | area), then specify a symbolic address as "foo:8", | |
1348 | otherwise if operand is still in eight bit section, use | |
1349 | "foo:16". */ | |
07e4d94e | 1350 | if (GET_CODE (XEXP (x, 0)) == SYMBOL_REF |
15dc331e | 1351 | && SYMBOL_REF_FLAG (XEXP (x, 0))) |
a653b93f VM |
1352 | fprintf (file, (code == 'R' ? ":8" : ":16")); |
1353 | else if (GET_CODE (XEXP (x, 0)) == SYMBOL_REF | |
07e4d94e | 1354 | && TINY_DATA_NAME_P (XSTR (XEXP (x, 0), 0))) |
887a8bd9 | 1355 | fprintf (file, ":16"); |
9f9f0e4f KH |
1356 | else if ((code == 'R') |
1357 | && EIGHTBIT_CONSTANT_ADDRESS_P (XEXP (x, 0))) | |
1358 | fprintf (file, ":8"); | |
07aae5c2 SC |
1359 | break; |
1360 | ||
1361 | case CONST_INT: | |
1362 | case SYMBOL_REF: | |
1363 | case CONST: | |
1364 | case LABEL_REF: | |
1365 | fprintf (file, "#"); | |
1366 | print_operand_address (file, x); | |
1367 | break; | |
808fbfac JL |
1368 | case CONST_DOUBLE: |
1369 | { | |
1370 | long val; | |
1371 | REAL_VALUE_TYPE rv; | |
1372 | REAL_VALUE_FROM_CONST_DOUBLE (rv, x); | |
1373 | REAL_VALUE_TO_TARGET_SINGLE (rv, val); | |
441d04c6 | 1374 | fprintf (file, "#%ld", val); |
808fbfac JL |
1375 | break; |
1376 | } | |
441d04c6 KG |
1377 | default: |
1378 | break; | |
07aae5c2 SC |
1379 | } |
1380 | } | |
1381 | } | |
1382 | ||
1383 | /* Output assembly language output for the address ADDR to FILE. */ | |
1384 | ||
1385 | void | |
1386 | print_operand_address (file, addr) | |
1387 | FILE *file; | |
1388 | rtx addr; | |
1389 | { | |
1390 | switch (GET_CODE (addr)) | |
1391 | { | |
1392 | case REG: | |
48837e29 | 1393 | fprintf (file, "%s", h8_reg_names[REGNO (addr)]); |
07aae5c2 SC |
1394 | break; |
1395 | ||
1396 | case PRE_DEC: | |
48837e29 | 1397 | fprintf (file, "-%s", h8_reg_names[REGNO (XEXP (addr, 0))]); |
07aae5c2 SC |
1398 | break; |
1399 | ||
1400 | case POST_INC: | |
48837e29 | 1401 | fprintf (file, "%s+", h8_reg_names[REGNO (XEXP (addr, 0))]); |
07aae5c2 SC |
1402 | break; |
1403 | ||
1404 | case PLUS: | |
1405 | fprintf (file, "("); | |
1406 | if (GET_CODE (XEXP (addr, 0)) == REG) | |
1407 | { | |
1408 | /* reg,foo */ | |
1409 | print_operand_address (file, XEXP (addr, 1)); | |
1410 | fprintf (file, ","); | |
1411 | print_operand_address (file, XEXP (addr, 0)); | |
1412 | } | |
1413 | else | |
1414 | { | |
1415 | /* foo+k */ | |
1416 | print_operand_address (file, XEXP (addr, 0)); | |
1417 | fprintf (file, "+"); | |
1418 | print_operand_address (file, XEXP (addr, 1)); | |
1419 | } | |
1420 | fprintf (file, ")"); | |
1421 | break; | |
1422 | ||
1423 | case CONST_INT: | |
48837e29 | 1424 | { |
64530b82 | 1425 | /* Since the H8/300 only has 16 bit pointers, negative values are also |
48837e29 DE |
1426 | those >= 32768. This happens for example with pointer minus a |
1427 | constant. We don't want to turn (char *p - 2) into | |
1428 | (char *p + 65534) because loop unrolling can build upon this | |
1429 | (IE: char *p + 131068). */ | |
1430 | int n = INTVAL (addr); | |
1431 | if (TARGET_H8300) | |
1432 | n = (int) (short) n; | |
1433 | if (n < 0) | |
07e4d94e | 1434 | /* ??? Why the special case for -ve values? */ |
48837e29 DE |
1435 | fprintf (file, "-%d", -n); |
1436 | else | |
1437 | fprintf (file, "%d", n); | |
1438 | break; | |
1439 | } | |
07aae5c2 SC |
1440 | |
1441 | default: | |
1442 | output_addr_const (file, addr); | |
1443 | break; | |
1444 | } | |
1445 | } | |
1446 | \f | |
07aae5c2 SC |
1447 | /* Output all insn addresses and their sizes into the assembly language |
1448 | output file. This is helpful for debugging whether the length attributes | |
1449 | in the md file are correct. This is not meant to be a user selectable | |
1450 | option. */ | |
1451 | ||
1452 | void | |
1453 | final_prescan_insn (insn, operand, num_operands) | |
441d04c6 KG |
1454 | rtx insn, *operand ATTRIBUTE_UNUSED; |
1455 | int num_operands ATTRIBUTE_UNUSED; | |
07aae5c2 SC |
1456 | { |
1457 | /* This holds the last insn address. */ | |
1458 | static int last_insn_address = 0; | |
1459 | ||
1460 | int uid = INSN_UID (insn); | |
1461 | ||
48837e29 DE |
1462 | if (TARGET_RTL_DUMP) |
1463 | { | |
1464 | fprintf (asm_out_file, "\n****************"); | |
1465 | print_rtl (asm_out_file, PATTERN (insn)); | |
1466 | fprintf (asm_out_file, "\n"); | |
1467 | } | |
1468 | ||
07aae5c2 SC |
1469 | if (TARGET_ADDRESSES) |
1470 | { | |
9d98a694 AO |
1471 | fprintf (asm_out_file, "; 0x%x %d\n", INSN_ADDRESSES (uid), |
1472 | INSN_ADDRESSES (uid) - last_insn_address); | |
1473 | last_insn_address = INSN_ADDRESSES (uid); | |
07aae5c2 SC |
1474 | } |
1475 | } | |
1476 | ||
48837e29 DE |
1477 | /* Prepare for an SI sized move. */ |
1478 | ||
1479 | int | |
1480 | do_movsi (operands) | |
1481 | rtx operands[]; | |
07aae5c2 | 1482 | { |
48837e29 DE |
1483 | rtx src = operands[1]; |
1484 | rtx dst = operands[0]; | |
1485 | if (!reload_in_progress && !reload_completed) | |
1486 | { | |
1487 | if (!register_operand (dst, GET_MODE (dst))) | |
1488 | { | |
1489 | rtx tmp = gen_reg_rtx (GET_MODE (dst)); | |
1490 | emit_move_insn (tmp, src); | |
1491 | operands[1] = tmp; | |
1492 | } | |
1493 | } | |
1494 | return 0; | |
1495 | } | |
1496 | ||
1497 | /* Function for INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET). | |
07e4d94e KH |
1498 | Define the offset between two registers, one to be eliminated, and |
1499 | the other its replacement, at the start of a routine. */ | |
07aae5c2 | 1500 | |
48837e29 DE |
1501 | int |
1502 | initial_offset (from, to) | |
441d04c6 | 1503 | int from, to; |
48837e29 DE |
1504 | { |
1505 | int offset = 0; | |
1506 | ||
1507 | if (from == ARG_POINTER_REGNUM && to == FRAME_POINTER_REGNUM) | |
1508 | offset = UNITS_PER_WORD + frame_pointer_needed * UNITS_PER_WORD; | |
1aae372e JL |
1509 | else if (from == RETURN_ADDRESS_POINTER_REGNUM && to == FRAME_POINTER_REGNUM) |
1510 | offset = frame_pointer_needed * UNITS_PER_WORD; | |
48837e29 | 1511 | else |
07aae5c2 | 1512 | { |
48837e29 DE |
1513 | int regno; |
1514 | ||
1515 | for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) | |
d01d2903 | 1516 | if (WORD_REG_USED (regno)) |
48837e29 DE |
1517 | offset += UNITS_PER_WORD; |
1518 | ||
1519 | /* See the comments for get_frame_size. We need to round it up to | |
1520 | STACK_BOUNDARY. */ | |
1521 | ||
1522 | offset += ((get_frame_size () + STACK_BOUNDARY / BITS_PER_UNIT - 1) | |
1523 | & ~(STACK_BOUNDARY / BITS_PER_UNIT - 1)); | |
1524 | ||
1525 | if (from == ARG_POINTER_REGNUM && to == STACK_POINTER_REGNUM) | |
1526 | offset += UNITS_PER_WORD; /* Skip saved PC */ | |
1527 | } | |
1528 | return offset; | |
1529 | } | |
1530 | ||
1aae372e JL |
1531 | rtx |
1532 | h8300_return_addr_rtx (count, frame) | |
1533 | int count; | |
1534 | rtx frame; | |
1535 | { | |
1536 | rtx ret; | |
1537 | ||
1538 | if (count == 0) | |
1539 | ret = gen_rtx_MEM (Pmode, | |
1540 | gen_rtx_REG (Pmode, RETURN_ADDRESS_POINTER_REGNUM)); | |
1541 | else if (flag_omit_frame_pointer) | |
1542 | return (rtx) 0; | |
1543 | else | |
1544 | ret = gen_rtx_MEM (Pmode, | |
1545 | memory_address (Pmode, | |
1546 | plus_constant (frame, UNITS_PER_WORD))); | |
1547 | set_mem_alias_set (ret, get_frame_alias_set ()); | |
1548 | return ret; | |
1549 | } | |
1550 | ||
48837e29 DE |
1551 | /* Update the condition code from the insn. */ |
1552 | ||
441d04c6 | 1553 | void |
48837e29 DE |
1554 | notice_update_cc (body, insn) |
1555 | rtx body; | |
1556 | rtx insn; | |
1557 | { | |
1558 | switch (get_attr_cc (insn)) | |
1559 | { | |
1560 | case CC_NONE: | |
269c14e1 | 1561 | /* Insn does not affect CC at all. */ |
48837e29 DE |
1562 | break; |
1563 | ||
1564 | case CC_NONE_0HIT: | |
269c14e1 | 1565 | /* Insn does not change CC, but the 0'th operand has been changed. */ |
48837e29 | 1566 | if (cc_status.value1 != 0 |
1ccbefce | 1567 | && reg_overlap_mentioned_p (recog_data.operand[0], cc_status.value1)) |
48837e29 | 1568 | cc_status.value1 = 0; |
48837e29 DE |
1569 | break; |
1570 | ||
065bbfe6 | 1571 | case CC_SET_ZN: |
1ccbefce | 1572 | /* Insn sets the Z,N flags of CC to recog_data.operand[0]. |
269c14e1 DE |
1573 | The V flag is unusable. The C flag may or may not be known but |
1574 | that's ok because alter_cond will change tests to use EQ/NE. */ | |
48837e29 | 1575 | CC_STATUS_INIT; |
269c14e1 | 1576 | cc_status.flags |= CC_OVERFLOW_UNUSABLE | CC_NO_CARRY; |
1ccbefce | 1577 | cc_status.value1 = recog_data.operand[0]; |
48837e29 DE |
1578 | break; |
1579 | ||
065bbfe6 | 1580 | case CC_SET_ZNV: |
1ccbefce | 1581 | /* Insn sets the Z,N,V flags of CC to recog_data.operand[0]. |
065bbfe6 JL |
1582 | The C flag may or may not be known but that's ok because |
1583 | alter_cond will change tests to use EQ/NE. */ | |
1584 | CC_STATUS_INIT; | |
1585 | cc_status.flags |= CC_NO_CARRY; | |
1ccbefce | 1586 | cc_status.value1 = recog_data.operand[0]; |
065bbfe6 JL |
1587 | break; |
1588 | ||
269c14e1 DE |
1589 | case CC_COMPARE: |
1590 | /* The insn is a compare instruction. */ | |
48837e29 | 1591 | CC_STATUS_INIT; |
269c14e1 | 1592 | cc_status.value1 = SET_SRC (body); |
48837e29 DE |
1593 | break; |
1594 | ||
48837e29 | 1595 | case CC_CLOBBER: |
269c14e1 | 1596 | /* Insn doesn't leave CC in a usable state. */ |
48837e29 DE |
1597 | CC_STATUS_INIT; |
1598 | break; | |
07aae5c2 | 1599 | } |
48837e29 DE |
1600 | } |
1601 | ||
07e4d94e | 1602 | /* Recognize valid operators for bit instructions. */ |
48837e29 DE |
1603 | |
1604 | int | |
1605 | bit_operator (x, mode) | |
1606 | rtx x; | |
441d04c6 | 1607 | enum machine_mode mode ATTRIBUTE_UNUSED; |
48837e29 DE |
1608 | { |
1609 | enum rtx_code code = GET_CODE (x); | |
07aae5c2 | 1610 | |
48837e29 DE |
1611 | return (code == XOR |
1612 | || code == AND | |
1613 | || code == IOR); | |
07aae5c2 | 1614 | } |
48837e29 | 1615 | \f |
366a7b27 KH |
1616 | const char * |
1617 | output_logical_op (mode, code, operands) | |
1618 | enum machine_mode mode; | |
1619 | int code; | |
1620 | rtx *operands; | |
1621 | { | |
1622 | /* Pretend that every byte is affected if both operands are registers. */ | |
1623 | unsigned HOST_WIDE_INT intval = | |
1624 | (unsigned HOST_WIDE_INT) ((GET_CODE (operands[2]) == CONST_INT) | |
1625 | ? INTVAL (operands[2]) : 0x55555555); | |
1626 | /* The determinant of the algorithm. If we perform an AND, 0 | |
1627 | affects a bit. Otherwise, 1 affects a bit. */ | |
1628 | unsigned HOST_WIDE_INT det = (code != AND) ? intval : ~intval; | |
1629 | /* The name of an insn. */ | |
1630 | const char *opname; | |
1631 | char insn_buf[100]; | |
1632 | ||
1633 | switch (code) | |
1634 | { | |
1635 | case AND: | |
1636 | opname = "and"; | |
1637 | break; | |
1638 | case IOR: | |
1639 | opname = "or"; | |
1640 | break; | |
1641 | case XOR: | |
1642 | opname = "xor"; | |
1643 | break; | |
1644 | default: | |
1645 | abort (); | |
1646 | } | |
1647 | ||
1648 | switch (mode) | |
1649 | { | |
1650 | case HImode: | |
1651 | /* First, see if we can finish with one insn. */ | |
1652 | if ((TARGET_H8300H || TARGET_H8300S) | |
1653 | && ((det & 0x00ff) != 0) | |
1654 | && ((det & 0xff00) != 0)) | |
1655 | { | |
1656 | sprintf (insn_buf, "%s.w\t%%T2,%%T0", opname); | |
1657 | output_asm_insn (insn_buf, operands); | |
1658 | } | |
1659 | else | |
1660 | { | |
1661 | /* Take care of the lower byte. */ | |
1662 | if ((det & 0x00ff) != 0) | |
1663 | { | |
1664 | sprintf (insn_buf, "%s\t%%s2,%%s0", opname); | |
1665 | output_asm_insn (insn_buf, operands); | |
1666 | } | |
1667 | /* Take care of the upper byte. */ | |
1668 | if ((det & 0xff00) != 0) | |
1669 | { | |
1670 | sprintf (insn_buf, "%s\t%%t2,%%t0", opname); | |
1671 | output_asm_insn (insn_buf, operands); | |
1672 | } | |
1673 | } | |
1674 | break; | |
1675 | case SImode: | |
1676 | /* First, see if we can finish with one insn. | |
1677 | ||
1678 | If code is either AND or XOR, we exclude two special cases, | |
1679 | 0xffffff00 and 0xffff00ff, because insns like sub.w or neg.w | |
1680 | can do a better job. */ | |
1681 | if ((TARGET_H8300H || TARGET_H8300S) | |
1682 | && ((det & 0x0000ffff) != 0) | |
1683 | && ((det & 0xffff0000) != 0) | |
1684 | && (code == IOR || det != 0xffffff00) | |
1685 | && (code == IOR || det != 0xffff00ff)) | |
1686 | { | |
1687 | sprintf (insn_buf, "%s.l\t%%S2,%%S0", opname); | |
1688 | output_asm_insn (insn_buf, operands); | |
1689 | } | |
1690 | else | |
1691 | { | |
1692 | /* Take care of the lower and upper words individually. For | |
1693 | each word, we try different methods in the order of | |
1694 | ||
1695 | 1) the special insn (in case of AND or XOR), | |
1696 | 2) the word-wise insn, and | |
1697 | 3) The byte-wise insn. */ | |
1698 | if ((TARGET_H8300H || TARGET_H8300S) | |
1699 | && ((det & 0x0000ffff) == 0x0000ffff) | |
1700 | && code != IOR) | |
1701 | output_asm_insn ((code == AND) | |
1702 | ? "sub.w\t%f0,%f0" : "neg.w\t%f0", | |
1703 | operands); | |
1704 | else if ((TARGET_H8300H || TARGET_H8300S) | |
1705 | && ((det & 0x000000ff) != 0) | |
1706 | && ((det & 0x0000ff00) != 0)) | |
1707 | { | |
1708 | sprintf (insn_buf, "%s.w\t%%f2,%%f0", opname); | |
1709 | output_asm_insn (insn_buf, operands); | |
1710 | } | |
1711 | else | |
1712 | { | |
1713 | if ((det & 0x000000ff) != 0) | |
1714 | { | |
1715 | sprintf (insn_buf, "%s\t%%w2,%%w0", opname); | |
1716 | output_asm_insn (insn_buf, operands); | |
1717 | } | |
1718 | if ((det & 0x0000ff00) != 0) | |
1719 | { | |
1720 | sprintf (insn_buf, "%s\t%%x2,%%x0", opname); | |
1721 | output_asm_insn (insn_buf, operands); | |
1722 | } | |
1723 | } | |
1724 | ||
1725 | if ((TARGET_H8300H || TARGET_H8300S) | |
1726 | && ((det & 0xffff0000) == 0xffff0000) | |
1727 | && code != IOR) | |
1728 | output_asm_insn ((code == AND) | |
1729 | ? "sub.w\t%e0,%e0" : "neg.w\t%e0", | |
1730 | operands); | |
1731 | else if (TARGET_H8300H || TARGET_H8300S) | |
1732 | { | |
1733 | if ((det & 0xffff0000) != 0) | |
1734 | { | |
1735 | sprintf (insn_buf, "%s.w\t%%e2,%%e0", opname); | |
1736 | output_asm_insn (insn_buf, operands); | |
1737 | } | |
1738 | } | |
1739 | else | |
1740 | { | |
1741 | if ((det & 0x00ff0000) != 0) | |
1742 | { | |
1743 | sprintf (insn_buf, "%s\t%%y2,%%y0", opname); | |
1744 | output_asm_insn (insn_buf, operands); | |
1745 | } | |
1746 | if ((det & 0xff000000) != 0) | |
1747 | { | |
1748 | sprintf (insn_buf, "%s\t%%z2,%%z0", opname); | |
1749 | output_asm_insn (insn_buf, operands); | |
1750 | } | |
1751 | } | |
1752 | } | |
1753 | break; | |
1754 | default: | |
1755 | abort (); | |
1756 | } | |
1757 | return ""; | |
1758 | } | |
1759 | \f | |
48837e29 DE |
1760 | /* Shifts. |
1761 | ||
1762 | We devote a fair bit of code to getting efficient shifts since we can only | |
51c0c1d7 JL |
1763 | shift one bit at a time on the H8/300 and H8/300H and only one or two |
1764 | bits at a time on the H8/S. | |
1765 | ||
1766 | The basic shift methods: | |
1767 | ||
1768 | * loop shifts -- emit a loop using one (or two on H8/S) bit shifts; | |
1769 | this is the default. SHIFT_LOOP | |
1770 | ||
1771 | * inlined shifts -- emit straight line code for the shift; this is | |
1772 | used when a straight line shift is about the same size or smaller | |
1773 | than a loop. We allow the inline version to be slightly longer in | |
1774 | some cases as it saves a register. SHIFT_INLINE | |
1775 | ||
1776 | * rotate + and -- rotate the value the opposite direction, then | |
1777 | mask off the values we don't need. This is used when only a few | |
1778 | of the bits in the original value will survive in the shifted value. | |
1779 | Again, this is used when it's about the same size or smaller than | |
1780 | a loop. We allow this version to be slightly longer as it is usually | |
1781 | much faster than a loop. SHIFT_ROT_AND | |
1782 | ||
1783 | * swap (+ shifts) -- often it's possible to swap bytes/words to | |
1784 | simulate a shift by 8/16. Once swapped a few inline shifts can be | |
1785 | added if the shift count is slightly more than 8 or 16. This is used | |
1786 | when it's about the same size or smaller than a loop. We allow this | |
1787 | version to be slightly longer as it is usually much faster than a loop. | |
1788 | SHIFT_SPECIAL | |
1789 | ||
1790 | * There other oddballs. Not worth explaining. SHIFT_SPECIAL | |
1791 | ||
48837e29 DE |
1792 | Here are some thoughts on what the absolutely positively best code is. |
1793 | "Best" here means some rational trade-off between code size and speed, | |
1794 | where speed is more preferred but not at the expense of generating 20 insns. | |
1795 | ||
51c0c1d7 JL |
1796 | A trailing '*' after the shift count indicates the "best" mode isn't |
1797 | implemented. | |
1798 | ||
48837e29 | 1799 | H8/300 QImode shifts |
51c0c1d7 JL |
1800 | 1-4 - do them inline |
1801 | 5-6 - ASHIFT | LSHIFTRT: rotate, mask off other bits | |
1802 | ASHIFTRT: loop | |
1803 | 7 - ASHIFT | LSHIFTRT: rotate, mask off other bits | |
1804 | ASHIFTRT: shll, subx (propagate carry bit to all bits) | |
48837e29 DE |
1805 | |
1806 | H8/300 HImode shifts | |
51c0c1d7 JL |
1807 | 1-4 - do them inline |
1808 | 5-6 - loop | |
1809 | 7 - shift 2nd half other way into carry. | |
1810 | copy 1st half into 2nd half | |
1811 | rotate 2nd half other way with carry | |
1812 | rotate 1st half other way (no carry) | |
1813 | mask off bits in 1st half (ASHIFT | LSHIFTRT). | |
1814 | sign extend 1st half (ASHIFTRT) | |
1815 | 8 - move byte, zero (ASHIFT | LSHIFTRT) or sign extend other (ASHIFTRT) | |
1816 | 9-12 - do shift by 8, inline remaining shifts | |
1817 | 13-14* - ASHIFT | LSHIFTRT: rotate 3/2, mask, move byte, set other byte to 0 | |
1818 | - ASHIFTRT: loop | |
1819 | 15 - ASHIFT | LSHIFTRT: rotate 1, mask, move byte, set other byte to 0 | |
1820 | - ASHIFTRT: shll, subx, set other byte | |
48837e29 DE |
1821 | |
1822 | H8/300 SImode shifts | |
51c0c1d7 JL |
1823 | 1-2 - do them inline |
1824 | 3-6 - loop | |
1825 | 7* - shift other way once, move bytes into place, | |
1826 | move carry into place (possibly with sign extension) | |
1827 | 8 - move bytes into place, zero or sign extend other | |
1828 | 9-14 - loop | |
1829 | 15* - shift other way once, move word into place, move carry into place | |
1830 | 16 - move word, zero or sign extend other | |
1831 | 17-23 - loop | |
1832 | 24* - move bytes into place, zero or sign extend other | |
1833 | 25-27 - loop | |
1834 | 28-30* - ASHIFT | LSHIFTRT: rotate top byte, mask, move byte into place, | |
1835 | zero others | |
1836 | ASHIFTRT: loop | |
38e01259 | 1837 | 31 - ASHIFT | LSHIFTRT: rotate top byte, mask, move byte into place, |
51c0c1d7 JL |
1838 | zero others |
1839 | ASHIFTRT: shll top byte, subx, copy to other bytes | |
1840 | ||
1841 | H8/300H QImode shifts (same as H8/300 QImode shifts) | |
1842 | 1-4 - do them inline | |
1843 | 5-6 - ASHIFT | LSHIFTRT: rotate, mask off other bits | |
1844 | ASHIFTRT: loop | |
1845 | 7 - ASHIFT | LSHIFTRT: rotate, mask off other bits | |
1846 | ASHIFTRT: shll, subx (propagate carry bit to all bits) | |
1847 | ||
48837e29 | 1848 | H8/300H HImode shifts |
51c0c1d7 JL |
1849 | 1-4 - do them inline |
1850 | 5-6 - loop | |
1851 | 7 - shift 2nd half other way into carry. | |
1852 | copy 1st half into 2nd half | |
1853 | rotate entire word other way using carry | |
1854 | mask off remaining bits (ASHIFT | LSHIFTRT) | |
1855 | sign extend remaining bits (ASHIFTRT) | |
1856 | 8 - move byte, zero (ASHIFT | LSHIFTRT) or sign extend other (ASHIFTRT) | |
1857 | 9-12 - do shift by 8, inline remaining shifts | |
1858 | 13-14 - ASHIFT | LSHIFTRT: rotate 3/2, mask, move byte, set other byte to 0 | |
1859 | - ASHIFTRT: loop | |
1860 | 15 - ASHIFT | LSHIFTRT: rotate 1, mask, move byte, set other byte to 0 | |
1861 | - ASHIFTRT: shll, subx, set other byte | |
48837e29 DE |
1862 | |
1863 | H8/300H SImode shifts | |
1864 | (These are complicated by the fact that we don't have byte level access to | |
1865 | the top word.) | |
1866 | A word is: bytes 3,2,1,0 (msb -> lsb), word 1,0 (msw -> lsw) | |
51c0c1d7 JL |
1867 | 1-4 - do them inline |
1868 | 5-14 - loop | |
1869 | 15* - shift other way once, move word into place, move carry into place | |
1870 | (with sign extension for ASHIFTRT) | |
1871 | 16 - move word into place, zero or sign extend other | |
1872 | 17-20 - do 16bit shift, then inline remaining shifts | |
1873 | 20-23 - loop | |
1874 | 24* - ASHIFT: move byte 0(msb) to byte 1, zero byte 0, | |
1875 | move word 0 to word 1, zero word 0 | |
1876 | LSHIFTRT: move word 1 to word 0, move byte 1 to byte 0, | |
1877 | zero word 1, zero byte 1 | |
1878 | ASHIFTRT: move word 1 to word 0, move byte 1 to byte 0, | |
1879 | sign extend byte 0, sign extend word 0 | |
1880 | 25-27* - either loop, or | |
1881 | do 24 bit shift, inline rest | |
1882 | 28-30 - ASHIFT: rotate 4/3/2, mask | |
1883 | LSHIFTRT: rotate 4/3/2, mask | |
1884 | ASHIFTRT: loop | |
1885 | 31 - shll, subx byte 0, sign extend byte 0, sign extend word 0 | |
1886 | ||
1887 | H8/S QImode shifts | |
1888 | 1-6 - do them inline | |
1889 | 7 - ASHIFT | LSHIFTRT: rotate, mask off other bits | |
1890 | ASHIFTRT: shll, subx (propagate carry bit to all bits) | |
1891 | ||
1892 | H8/S HImode shifts | |
1893 | 1-7 - do them inline | |
1894 | 8 - move byte, zero (ASHIFT | LSHIFTRT) or sign extend other (ASHIFTRT) | |
1895 | 9-12 - do shift by 8, inline remaining shifts | |
1896 | 13-14 - ASHIFT | LSHIFTRT: rotate 3/2, mask, move byte, set other byte to 0 | |
1897 | - ASHIFTRT: loop | |
1898 | 15 - ASHIFT | LSHIFTRT: rotate 1, mask, move byte, set other byte to 0 | |
1899 | - ASHIFTRT: shll, subx, set other byte | |
1900 | ||
1901 | H8/S SImode shifts | |
1902 | (These are complicated by the fact that we don't have byte level access to | |
1903 | the top word.) | |
1904 | A word is: bytes 3,2,1,0 (msb -> lsb), word 1,0 (msw -> lsw) | |
1905 | 1-10 - do them inline | |
1906 | 11-14 - loop | |
1907 | 15* - shift other way once, move word into place, move carry into place | |
1908 | (with sign extension for ASHIFTRT) | |
1909 | 16 - move word into place, zero or sign extend other | |
1910 | 17-20 - do 16bit shift, then inline remaining shifts | |
3e39bdb9 | 1911 | 21-23 - loop |
51c0c1d7 JL |
1912 | 24* - ASHIFT: move byte 0(msb) to byte 1, zero byte 0, |
1913 | move word 0 to word 1, zero word 0 | |
1914 | LSHIFTRT: move word 1 to word 0, move byte 1 to byte 0, | |
1915 | zero word 1, zero byte 1 | |
1916 | ASHIFTRT: move word 1 to word 0, move byte 1 to byte 0, | |
1917 | sign extend byte 0, sign extend word 0 | |
1918 | 25-27* - either loop, or | |
1919 | do 24 bit shift, inline rest | |
1920 | 28-30 - ASHIFT: rotate 4/3/2, mask | |
1921 | LSHIFTRT: rotate 4/3/2, mask | |
1922 | ASHIFTRT: loop | |
1923 | 31 - shll, subx byte 0, sign extend byte 0, sign extend word 0 | |
1924 | ||
1925 | Panic!!! */ | |
07aae5c2 SC |
1926 | |
1927 | int | |
48837e29 DE |
1928 | nshift_operator (x, mode) |
1929 | rtx x; | |
441d04c6 | 1930 | enum machine_mode mode ATTRIBUTE_UNUSED; |
48837e29 DE |
1931 | { |
1932 | switch (GET_CODE (x)) | |
1933 | { | |
1934 | case ASHIFTRT: | |
1935 | case LSHIFTRT: | |
1936 | case ASHIFT: | |
1937 | return 1; | |
1938 | ||
1939 | default: | |
1940 | return 0; | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | /* Called from the .md file to emit code to do shifts. | |
64530b82 KH |
1945 | Return a boolean indicating success. |
1946 | (Currently this is always TRUE). */ | |
48837e29 DE |
1947 | |
1948 | int | |
1949 | expand_a_shift (mode, code, operands) | |
1950 | enum machine_mode mode; | |
07aae5c2 SC |
1951 | int code; |
1952 | rtx operands[]; | |
07aae5c2 | 1953 | { |
07aae5c2 SC |
1954 | emit_move_insn (operands[0], operands[1]); |
1955 | ||
07e4d94e KH |
1956 | /* Need a loop to get all the bits we want - we generate the |
1957 | code at emit time, but need to allocate a scratch reg now. */ | |
48837e29 | 1958 | |
c5c76735 JL |
1959 | emit_insn (gen_rtx_PARALLEL |
1960 | (VOIDmode, | |
48837e29 | 1961 | gen_rtvec (2, |
c5c76735 JL |
1962 | gen_rtx_SET (VOIDmode, operands[0], |
1963 | gen_rtx (code, mode, operands[0], | |
1964 | operands[2])), | |
1965 | gen_rtx_CLOBBER (VOIDmode, | |
1966 | gen_rtx_SCRATCH (QImode))))); | |
48837e29 DE |
1967 | |
1968 | return 1; | |
1969 | } | |
1970 | ||
1971 | /* Shift algorithm determination. | |
1972 | ||
1973 | There are various ways of doing a shift: | |
1974 | SHIFT_INLINE: If the amount is small enough, just generate as many one-bit | |
1975 | shifts as we need. | |
1976 | SHIFT_ROT_AND: If the amount is large but close to either end, rotate the | |
1977 | necessary bits into position and then set the rest to zero. | |
1978 | SHIFT_SPECIAL: Hand crafted assembler. | |
1979 | SHIFT_LOOP: If the above methods fail, just loop. */ | |
1980 | ||
1981 | enum shift_alg | |
1982 | { | |
1983 | SHIFT_INLINE, | |
1984 | SHIFT_ROT_AND, | |
1985 | SHIFT_SPECIAL, | |
0c50ee73 | 1986 | SHIFT_LOOP |
48837e29 DE |
1987 | }; |
1988 | ||
1989 | /* Symbols of the various shifts which can be used as indices. */ | |
1990 | ||
1991 | enum shift_type | |
1a63219b KH |
1992 | { |
1993 | SHIFT_ASHIFT, SHIFT_LSHIFTRT, SHIFT_ASHIFTRT | |
1994 | }; | |
48837e29 DE |
1995 | |
1996 | /* Symbols of the various modes which can be used as indices. */ | |
1997 | ||
1998 | enum shift_mode | |
1a63219b KH |
1999 | { |
2000 | QIshift, HIshift, SIshift | |
2001 | }; | |
48837e29 | 2002 | |
269c14e1 DE |
2003 | /* For single bit shift insns, record assembler and what bits of the |
2004 | condition code are valid afterwards (represented as various CC_FOO | |
2005 | bits, 0 means CC isn't left in a usable state). */ | |
48837e29 DE |
2006 | |
2007 | struct shift_insn | |
2008 | { | |
8b60264b KG |
2009 | const char *const assembler; |
2010 | const int cc_valid; | |
48837e29 DE |
2011 | }; |
2012 | ||
2013 | /* Assembler instruction shift table. | |
2014 | ||
2015 | These tables are used to look up the basic shifts. | |
07e4d94e | 2016 | They are indexed by cpu, shift_type, and mode. */ |
07aae5c2 | 2017 | |
48837e29 DE |
2018 | static const struct shift_insn shift_one[2][3][3] = |
2019 | { | |
2020 | /* H8/300 */ | |
2021 | { | |
2022 | /* SHIFT_ASHIFT */ | |
2023 | { | |
065bbfe6 | 2024 | { "shll\t%X0", CC_NO_CARRY }, |
51c0c1d7 JL |
2025 | { "add.w\t%T0,%T0", CC_OVERFLOW_UNUSABLE | CC_NO_CARRY }, |
2026 | { "add.w\t%f0,%f0\n\taddx\t%y0,%y0\n\taddx\t%z0,%z0", 0 } | |
48837e29 DE |
2027 | }, |
2028 | /* SHIFT_LSHIFTRT */ | |
2029 | { | |
065bbfe6 | 2030 | { "shlr\t%X0", CC_NO_CARRY }, |
51c0c1d7 JL |
2031 | { "shlr\t%t0\n\trotxr\t%s0", 0 }, |
2032 | { "shlr\t%z0\n\trotxr\t%y0\n\trotxr\t%x0\n\trotxr\t%w0", 0 } | |
48837e29 DE |
2033 | }, |
2034 | /* SHIFT_ASHIFTRT */ | |
2035 | { | |
51c0c1d7 JL |
2036 | { "shar\t%X0", CC_OVERFLOW_UNUSABLE | CC_NO_CARRY }, |
2037 | { "shar\t%t0\n\trotxr\t%s0", 0 }, | |
2038 | { "shar\t%z0\n\trotxr\t%y0\n\trotxr\t%x0\n\trotxr\t%w0", 0 } | |
48837e29 DE |
2039 | } |
2040 | }, | |
2041 | /* H8/300H */ | |
2042 | { | |
2043 | /* SHIFT_ASHIFT */ | |
2044 | { | |
065bbfe6 JL |
2045 | { "shll.b\t%X0", CC_NO_CARRY }, |
2046 | { "shll.w\t%T0", CC_NO_CARRY }, | |
2047 | { "shll.l\t%S0", CC_NO_CARRY } | |
48837e29 DE |
2048 | }, |
2049 | /* SHIFT_LSHIFTRT */ | |
2050 | { | |
065bbfe6 JL |
2051 | { "shlr.b\t%X0", CC_NO_CARRY }, |
2052 | { "shlr.w\t%T0", CC_NO_CARRY }, | |
2053 | { "shlr.l\t%S0", CC_NO_CARRY } | |
48837e29 DE |
2054 | }, |
2055 | /* SHIFT_ASHIFTRT */ | |
2056 | { | |
51c0c1d7 JL |
2057 | { "shar.b\t%X0", CC_OVERFLOW_UNUSABLE | CC_NO_CARRY }, |
2058 | { "shar.w\t%T0", CC_OVERFLOW_UNUSABLE | CC_NO_CARRY }, | |
2059 | { "shar.l\t%S0", CC_OVERFLOW_UNUSABLE | CC_NO_CARRY } | |
48837e29 DE |
2060 | } |
2061 | } | |
2062 | }; | |
07aae5c2 | 2063 | |
51c0c1d7 JL |
2064 | static const struct shift_insn shift_two[3][3] = |
2065 | { | |
2066 | /* SHIFT_ASHIFT */ | |
2067 | { | |
065bbfe6 JL |
2068 | { "shll.b\t#2,%X0", CC_NO_CARRY }, |
2069 | { "shll.w\t#2,%T0", CC_NO_CARRY }, | |
2070 | { "shll.l\t#2,%S0", CC_NO_CARRY } | |
51c0c1d7 JL |
2071 | }, |
2072 | /* SHIFT_LSHIFTRT */ | |
2073 | { | |
065bbfe6 JL |
2074 | { "shlr.b\t#2,%X0", CC_NO_CARRY }, |
2075 | { "shlr.w\t#2,%T0", CC_NO_CARRY }, | |
2076 | { "shlr.l\t#2,%S0", CC_NO_CARRY } | |
51c0c1d7 JL |
2077 | }, |
2078 | /* SHIFT_ASHIFTRT */ | |
2079 | { | |
2080 | { "shar.b\t#2,%X0", CC_OVERFLOW_UNUSABLE | CC_NO_CARRY }, | |
2081 | { "shar.w\t#2,%T0", CC_OVERFLOW_UNUSABLE | CC_NO_CARRY }, | |
2082 | { "shar.l\t#2,%S0", CC_OVERFLOW_UNUSABLE | CC_NO_CARRY } | |
2083 | } | |
2084 | }; | |
2085 | ||
48837e29 DE |
2086 | /* Rotates are organized by which shift they'll be used in implementing. |
2087 | There's no need to record whether the cc is valid afterwards because | |
2088 | it is the AND insn that will decide this. */ | |
07aae5c2 | 2089 | |
48837e29 DE |
2090 | static const char *const rotate_one[2][3][3] = |
2091 | { | |
2092 | /* H8/300 */ | |
2093 | { | |
2094 | /* SHIFT_ASHIFT */ | |
2095 | { | |
51c0c1d7 JL |
2096 | "rotr\t%X0", |
2097 | "shlr\t%t0\n\trotxr\t%s0\n\tbst\t#7,%t0", | |
48837e29 DE |
2098 | 0 |
2099 | }, | |
2100 | /* SHIFT_LSHIFTRT */ | |
2101 | { | |
51c0c1d7 JL |
2102 | "rotl\t%X0", |
2103 | "shll\t%s0\n\trotxl\t%t0\n\tbst\t#0,%s0", | |
48837e29 DE |
2104 | 0 |
2105 | }, | |
2106 | /* SHIFT_ASHIFTRT */ | |
2107 | { | |
51c0c1d7 JL |
2108 | "rotl\t%X0", |
2109 | "shll\t%s0\n\trotxl\t%t0\n\tbst\t#0,%s0", | |
48837e29 | 2110 | 0 |
07aae5c2 | 2111 | } |
48837e29 DE |
2112 | }, |
2113 | /* H8/300H */ | |
2114 | { | |
2115 | /* SHIFT_ASHIFT */ | |
2116 | { | |
51c0c1d7 JL |
2117 | "rotr.b\t%X0", |
2118 | "rotr.w\t%T0", | |
2119 | "rotr.l\t%S0" | |
48837e29 DE |
2120 | }, |
2121 | /* SHIFT_LSHIFTRT */ | |
07aae5c2 | 2122 | { |
51c0c1d7 JL |
2123 | "rotl.b\t%X0", |
2124 | "rotl.w\t%T0", | |
2125 | "rotl.l\t%S0" | |
48837e29 DE |
2126 | }, |
2127 | /* SHIFT_ASHIFTRT */ | |
2128 | { | |
51c0c1d7 JL |
2129 | "rotl.b\t%X0", |
2130 | "rotl.w\t%T0", | |
2131 | "rotl.l\t%S0" | |
48837e29 DE |
2132 | } |
2133 | } | |
2134 | }; | |
2135 | ||
51c0c1d7 JL |
2136 | static const char *const rotate_two[3][3] = |
2137 | { | |
2138 | /* SHIFT_ASHIFT */ | |
2139 | { | |
2140 | "rotr.b\t#2,%X0", | |
2141 | "rotr.w\t#2,%T0", | |
2142 | "rotr.l\t#2,%S0" | |
2143 | }, | |
2144 | /* SHIFT_LSHIFTRT */ | |
2145 | { | |
2146 | "rotl.b\t#2,%X0", | |
2147 | "rotl.w\t#2,%T0", | |
2148 | "rotl.l\t#2,%S0" | |
2149 | }, | |
2150 | /* SHIFT_ASHIFTRT */ | |
2151 | { | |
2152 | "rotl.b\t#2,%X0", | |
2153 | "rotl.w\t#2,%T0", | |
2154 | "rotl.l\t#2,%S0" | |
2155 | } | |
2156 | }; | |
2157 | ||
769828ab KH |
2158 | /* Macros to keep the shift algorithm tables small. */ |
2159 | #define INL SHIFT_INLINE | |
2160 | #define ROT SHIFT_ROT_AND | |
2161 | #define LOP SHIFT_LOOP | |
2162 | #define SPC SHIFT_SPECIAL | |
2163 | ||
2164 | /* The shift algorithms for each machine, mode, shift type, and shift | |
2165 | count are defined below. The three tables below correspond to | |
2166 | QImode, HImode, and SImode, respectively. Each table is organized | |
2167 | by, in the order of indecies, machine, shift type, and shift count. */ | |
2168 | ||
2169 | static const enum shift_alg shift_alg_qi[3][3][8] = { | |
2170 | { | |
2171 | /* TARGET_H8300 */ | |
2172 | /* 0 1 2 3 4 5 6 7 */ | |
2173 | { INL, INL, INL, INL, INL, ROT, ROT, ROT }, /* SHIFT_ASHIFT */ | |
2174 | { INL, INL, INL, INL, INL, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
2175 | { INL, INL, INL, INL, INL, LOP, LOP, SPC } /* SHIFT_ASHIFTRT */ | |
2176 | }, | |
2177 | { | |
2178 | /* TARGET_H8300H */ | |
2179 | /* 0 1 2 3 4 5 6 7 */ | |
2180 | { INL, INL, INL, INL, INL, ROT, ROT, ROT }, /* SHIFT_ASHIFT */ | |
2181 | { INL, INL, INL, INL, INL, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
2182 | { INL, INL, INL, INL, INL, LOP, LOP, SPC } /* SHIFT_ASHIFTRT */ | |
2183 | }, | |
2184 | { | |
2185 | /* TARGET_H8300S */ | |
2186 | /* 0 1 2 3 4 5 6 7 */ | |
e0f19bd0 KH |
2187 | { INL, INL, INL, INL, INL, INL, ROT, ROT }, /* SHIFT_ASHIFT */ |
2188 | { INL, INL, INL, INL, INL, INL, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
769828ab KH |
2189 | { INL, INL, INL, INL, INL, INL, INL, SPC } /* SHIFT_ASHIFTRT */ |
2190 | } | |
2191 | }; | |
2192 | ||
2193 | static const enum shift_alg shift_alg_hi[3][3][16] = { | |
2194 | { | |
2195 | /* TARGET_H8300 */ | |
2196 | /* 0 1 2 3 4 5 6 7 */ | |
2197 | /* 8 9 10 11 12 13 14 15 */ | |
2198 | { INL, INL, INL, INL, INL, LOP, LOP, SPC, | |
2199 | SPC, SPC, SPC, SPC, SPC, LOP, LOP, ROT }, /* SHIFT_ASHIFT */ | |
2200 | { INL, INL, INL, INL, INL, LOP, LOP, SPC, | |
2201 | SPC, SPC, SPC, SPC, SPC, LOP, LOP, ROT }, /* SHIFT_LSHIFTRT */ | |
2202 | { INL, INL, INL, INL, INL, LOP, LOP, SPC, | |
2203 | SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ | |
2204 | }, | |
2205 | { | |
2206 | /* TARGET_H8300H */ | |
2207 | /* 0 1 2 3 4 5 6 7 */ | |
2208 | /* 8 9 10 11 12 13 14 15 */ | |
2209 | { INL, INL, INL, INL, INL, LOP, LOP, SPC, | |
2210 | SPC, SPC, SPC, SPC, SPC, ROT, ROT, ROT }, /* SHIFT_ASHIFT */ | |
2211 | { INL, INL, INL, INL, INL, LOP, LOP, SPC, | |
2212 | SPC, SPC, SPC, SPC, SPC, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
2213 | { INL, INL, INL, INL, INL, LOP, LOP, SPC, | |
2214 | SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ | |
2215 | }, | |
2216 | { | |
2217 | /* TARGET_H8300S */ | |
2218 | /* 0 1 2 3 4 5 6 7 */ | |
2219 | /* 8 9 10 11 12 13 14 15 */ | |
2220 | { INL, INL, INL, INL, INL, INL, INL, INL, | |
2221 | SPC, SPC, SPC, SPC, SPC, ROT, ROT, ROT }, /* SHIFT_ASHIFT */ | |
2222 | { INL, INL, INL, INL, INL, INL, INL, INL, | |
2223 | SPC, SPC, SPC, SPC, SPC, ROT, ROT, ROT }, /* SHIFT_LSHIFTRT */ | |
2224 | { INL, INL, INL, INL, INL, INL, INL, INL, | |
2225 | SPC, SPC, SPC, SPC, SPC, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ | |
2226 | } | |
2227 | }; | |
2228 | ||
2229 | static const enum shift_alg shift_alg_si[3][3][32] = { | |
2230 | { | |
2231 | /* TARGET_H8300 */ | |
2232 | /* 0 1 2 3 4 5 6 7 */ | |
2233 | /* 8 9 10 11 12 13 14 15 */ | |
2234 | /* 16 17 18 19 20 21 22 23 */ | |
2235 | /* 24 25 26 27 28 29 30 31 */ | |
2236 | { INL, INL, INL, LOP, LOP, LOP, LOP, LOP, | |
2237 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
2238 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
2239 | LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFT */ | |
2240 | { INL, INL, INL, LOP, LOP, LOP, LOP, LOP, | |
2241 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
2242 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
2243 | LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_LSHIFTRT */ | |
2244 | { INL, INL, INL, LOP, LOP, LOP, LOP, LOP, | |
2245 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
2246 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
2247 | LOP, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ | |
2248 | }, | |
2249 | { | |
2250 | /* TARGET_H8300H */ | |
2251 | /* 0 1 2 3 4 5 6 7 */ | |
2252 | /* 8 9 10 11 12 13 14 15 */ | |
2253 | /* 16 17 18 19 20 21 22 23 */ | |
2254 | /* 24 25 26 27 28 29 30 31 */ | |
2255 | { INL, INL, INL, INL, INL, LOP, LOP, LOP, | |
dd69e230 | 2256 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC, |
769828ab | 2257 | SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP, |
dd69e230 | 2258 | SPC, LOP, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_ASHIFT */ |
769828ab | 2259 | { INL, INL, INL, INL, INL, LOP, LOP, LOP, |
dd69e230 | 2260 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC, |
769828ab | 2261 | SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP, |
dd69e230 | 2262 | SPC, LOP, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_LSHIFTRT */ |
769828ab KH |
2263 | { INL, INL, INL, INL, INL, LOP, LOP, LOP, |
2264 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, LOP, | |
2265 | SPC, SPC, SPC, SPC, LOP, LOP, LOP, LOP, | |
2266 | SPC, LOP, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ | |
2267 | }, | |
2268 | { | |
2269 | /* TARGET_H8300S */ | |
2270 | /* 0 1 2 3 4 5 6 7 */ | |
2271 | /* 8 9 10 11 12 13 14 15 */ | |
2272 | /* 16 17 18 19 20 21 22 23 */ | |
2273 | /* 24 25 26 27 28 29 30 31 */ | |
2274 | { INL, INL, INL, INL, INL, INL, INL, INL, | |
dd69e230 | 2275 | INL, INL, INL, LOP, LOP, LOP, LOP, SPC, |
e0f19bd0 | 2276 | SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP, |
4a4ae922 | 2277 | SPC, SPC, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_ASHIFT */ |
769828ab | 2278 | { INL, INL, INL, INL, INL, INL, INL, INL, |
dd69e230 | 2279 | INL, INL, INL, LOP, LOP, LOP, LOP, SPC, |
e0f19bd0 | 2280 | SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP, |
4a4ae922 | 2281 | SPC, SPC, LOP, LOP, ROT, ROT, ROT, SPC }, /* SHIFT_LSHIFTRT */ |
769828ab KH |
2282 | { INL, INL, INL, INL, INL, INL, INL, INL, |
2283 | INL, INL, INL, LOP, LOP, LOP, LOP, LOP, | |
e0f19bd0 | 2284 | SPC, SPC, SPC, SPC, SPC, SPC, LOP, LOP, |
4a4ae922 | 2285 | SPC, SPC, LOP, LOP, LOP, LOP, LOP, SPC }, /* SHIFT_ASHIFTRT */ |
769828ab KH |
2286 | } |
2287 | }; | |
2288 | ||
2289 | #undef INL | |
2290 | #undef ROT | |
2291 | #undef LOP | |
2292 | #undef SPC | |
2293 | ||
35fb3d1f KH |
2294 | struct shift_info { |
2295 | /* Shift algorithm. */ | |
2296 | enum shift_alg alg; | |
2297 | ||
2298 | /* The number of bits to be shifted by shift1 and shift2. Valid | |
2299 | when ALG is SHIFT_SPECIAL. */ | |
2300 | unsigned int remainder; | |
2301 | ||
2302 | /* Special insn for a shift. Valid when ALG is SHIFT_SPECIAL. */ | |
2303 | const char *special; | |
2304 | ||
2305 | /* Insn for a one-bit shift. Valid when ALG is either SHIFT_INLINE | |
2306 | or SHIFT_SPECIAL, and REMAINDER is non-zero. */ | |
2307 | const char *shift1; | |
2308 | ||
2309 | /* Insn for a two-bit shift. Valid when ALG is either SHIFT_INLINE | |
2310 | or SHIFT_SPECIAL, and REMAINDER is non-zero. */ | |
2311 | const char *shift2; | |
2312 | ||
2313 | /* Valid CC flags. */ | |
2314 | int cc_valid_p; | |
2315 | }; | |
2316 | ||
cb33eb17 | 2317 | static void get_shift_alg PARAMS ((enum shift_type, |
769828ab | 2318 | enum shift_mode, unsigned int, |
cb33eb17 | 2319 | struct shift_info *)); |
441d04c6 | 2320 | |
c009a745 KH |
2321 | /* Given SHIFT_TYPE, SHIFT_MODE, and shift count COUNT, determine the |
2322 | best algorithm for doing the shift. The assembler code is stored | |
2323 | in the pointers in INFO. We don't achieve maximum efficiency in | |
2324 | all cases, but the hooks are here to do so. | |
48837e29 DE |
2325 | |
2326 | For now we just use lots of switch statements. Since we don't even come | |
2327 | close to supporting all the cases, this is simplest. If this function ever | |
2328 | gets too big, perhaps resort to a more table based lookup. Of course, | |
2329 | at this point you may just wish to do it all in rtl. | |
2330 | ||
2331 | WARNING: The constraints on insns shiftbyn_QI/HI/SI assume shifts of | |
2332 | 1,2,3,4 will be inlined (1,2 for SI). */ | |
2333 | ||
cb33eb17 | 2334 | static void |
35fb3d1f | 2335 | get_shift_alg (shift_type, shift_mode, count, info) |
48837e29 | 2336 | enum shift_type shift_type; |
9789584b | 2337 | enum shift_mode shift_mode; |
769828ab | 2338 | unsigned int count; |
35fb3d1f | 2339 | struct shift_info *info; |
48837e29 | 2340 | { |
769828ab KH |
2341 | int cpu; |
2342 | ||
2343 | /* Find the target CPU. */ | |
2344 | if (TARGET_H8300) | |
2345 | cpu = 0; | |
2346 | else if (TARGET_H8300H) | |
2347 | cpu = 1; | |
2348 | else | |
2349 | cpu = 2; | |
2350 | ||
96eaf358 | 2351 | /* Find the shift algorithm. */ |
48837e29 DE |
2352 | switch (shift_mode) |
2353 | { | |
2354 | case QIshift: | |
769828ab | 2355 | if (GET_MODE_BITSIZE (QImode) <= count) |
96eaf358 KH |
2356 | info->alg = SHIFT_LOOP; |
2357 | else | |
2358 | info->alg = shift_alg_qi[cpu][shift_type][count]; | |
2359 | break; | |
769828ab | 2360 | |
96eaf358 KH |
2361 | case HIshift: |
2362 | if (GET_MODE_BITSIZE (HImode) <= count) | |
2363 | info->alg = SHIFT_LOOP; | |
2364 | else | |
2365 | info->alg = shift_alg_hi[cpu][shift_type][count]; | |
2366 | break; | |
2367 | ||
2368 | case SIshift: | |
2369 | if (GET_MODE_BITSIZE (SImode) <= count) | |
2370 | info->alg = SHIFT_LOOP; | |
2371 | else | |
2372 | info->alg = shift_alg_si[cpu][shift_type][count]; | |
2373 | break; | |
2374 | ||
2375 | default: | |
2376 | abort (); | |
2377 | } | |
2378 | ||
2379 | /* Fill in INFO. Return unless we have SHIFT_SPECIAL. */ | |
2380 | switch (info->alg) | |
2381 | { | |
2382 | case SHIFT_INLINE: | |
2383 | info->remainder = count; | |
2384 | /* Fall through. */ | |
2385 | ||
2386 | case SHIFT_LOOP: | |
2387 | /* It is up to the caller to know that looping clobbers cc. */ | |
2388 | info->shift1 = shift_one[cpu_type][shift_type][shift_mode].assembler; | |
2389 | info->shift2 = shift_two[shift_type][shift_mode].assembler; | |
2390 | info->cc_valid_p = shift_one[cpu_type][shift_type][shift_mode].cc_valid; | |
2391 | goto end; | |
2392 | ||
2393 | case SHIFT_ROT_AND: | |
2394 | info->shift1 = rotate_one[cpu_type][shift_type][shift_mode]; | |
2395 | info->shift2 = rotate_two[shift_type][shift_mode]; | |
2396 | info->cc_valid_p = 0; | |
2397 | goto end; | |
2398 | ||
2399 | case SHIFT_SPECIAL: | |
2400 | /* REMAINDER is 0 for most cases, so initialize it to 0. */ | |
2401 | info->remainder = 0; | |
2402 | info->shift1 = shift_one[cpu_type][shift_type][shift_mode].assembler; | |
2403 | info->shift2 = shift_two[shift_type][shift_mode].assembler; | |
2404 | info->cc_valid_p = 0; | |
2405 | break; | |
2406 | } | |
51c0c1d7 | 2407 | |
96eaf358 KH |
2408 | /* Here we only deal with SHIFT_SPECIAL. */ |
2409 | switch (shift_mode) | |
2410 | { | |
2411 | case QIshift: | |
769828ab KH |
2412 | /* For ASHIFTRT by 7 bits, the sign bit is simply replicated |
2413 | through the entire value. */ | |
2414 | if (shift_type == SHIFT_ASHIFTRT && count == 7) | |
2415 | { | |
2416 | info->special = "shll\t%X0\n\tsubx\t%X0,%X0"; | |
692b7eb3 | 2417 | goto end; |
769828ab KH |
2418 | } |
2419 | abort (); | |
2420 | ||
2421 | case HIshift: | |
769828ab | 2422 | if (count == 7) |
51c0c1d7 | 2423 | { |
a77b1dbc | 2424 | switch (shift_type) |
51c0c1d7 | 2425 | { |
a77b1dbc KH |
2426 | case SHIFT_ASHIFT: |
2427 | if (TARGET_H8300) | |
2428 | info->special = "shar.b\t%t0\n\tmov.b\t%s0,%t0\n\trotxr.b\t%t0\n\trotr.b\t%s0\n\tand.b\t#0x80,%s0"; | |
2429 | else | |
2430 | info->special = "shar.b\t%t0\n\tmov.b\t%s0,%t0\n\trotxr.w\t%T0\n\tand.b\t#0x80,%s0"; | |
692b7eb3 | 2431 | goto end; |
a77b1dbc KH |
2432 | case SHIFT_LSHIFTRT: |
2433 | if (TARGET_H8300) | |
2434 | info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.b\t%s0\n\trotl.b\t%t0\n\tand.b\t#0x01,%t0"; | |
2435 | else | |
2436 | info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.w\t%T0\n\tand.b\t#0x01,%t0"; | |
692b7eb3 | 2437 | goto end; |
a77b1dbc | 2438 | case SHIFT_ASHIFTRT: |
35fb3d1f | 2439 | info->special = "shal.b\t%s0\n\tmov.b\t%t0,%s0\n\trotxl.b\t%s0\n\tsubx\t%t0,%t0"; |
692b7eb3 | 2440 | goto end; |
48837e29 | 2441 | } |
07aae5c2 | 2442 | } |
a7812c0b | 2443 | else if (8 <= count && count <= 12) |
07aae5c2 | 2444 | { |
a7812c0b KH |
2445 | info->remainder = count - 8; |
2446 | ||
51c0c1d7 | 2447 | switch (shift_type) |
48837e29 | 2448 | { |
51c0c1d7 | 2449 | case SHIFT_ASHIFT: |
35fb3d1f | 2450 | info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0"; |
a7812c0b KH |
2451 | info->shift1 = "shal.b\t%t0"; |
2452 | info->shift2 = "shal.b\t#2,%t0"; | |
692b7eb3 | 2453 | goto end; |
51c0c1d7 | 2454 | case SHIFT_LSHIFTRT: |
35fb3d1f | 2455 | info->special = "mov.b\t%t0,%s0\n\tsub.b\t%t0,%t0"; |
a7812c0b KH |
2456 | info->shift1 = "shlr.b\t%s0"; |
2457 | info->shift2 = "shlr.b\t#2,%s0"; | |
692b7eb3 | 2458 | goto end; |
51c0c1d7 JL |
2459 | case SHIFT_ASHIFTRT: |
2460 | if (TARGET_H8300) | |
a7812c0b | 2461 | info->special = "mov.b\t%t0,%s0\n\tbld\t#7,%s0\n\tsubx\t%t0,%t0"; |
51c0c1d7 | 2462 | else |
35fb3d1f | 2463 | info->special = "mov.b\t%t0,%s0\n\texts.w\t%T0"; |
a7812c0b KH |
2464 | info->shift1 = "shar.b\t%s0"; |
2465 | info->shift2 = "shar.b\t#2,%s0"; | |
692b7eb3 | 2466 | goto end; |
51c0c1d7 JL |
2467 | } |
2468 | } | |
769828ab | 2469 | else if (count == 15 && shift_type == SHIFT_ASHIFTRT) |
51c0c1d7 | 2470 | { |
769828ab | 2471 | info->special = "shll\t%t0\n\tsubx\t%t0,%t0\n\tmov.b\t%t0,%s0"; |
692b7eb3 | 2472 | goto end; |
07aae5c2 | 2473 | } |
769828ab | 2474 | abort (); |
51c0c1d7 | 2475 | |
48837e29 | 2476 | case SIshift: |
769828ab | 2477 | if (count == 8 && TARGET_H8300) |
48837e29 | 2478 | { |
51c0c1d7 | 2479 | switch (shift_type) |
48837e29 | 2480 | { |
51c0c1d7 | 2481 | case SHIFT_ASHIFT: |
35fb3d1f | 2482 | info->special = "mov.b\t%y0,%z0\n\tmov.b\t%x0,%y0\n\tmov.b\t%w0,%x0\n\tsub.b\t%w0,%w0"; |
692b7eb3 | 2483 | goto end; |
51c0c1d7 | 2484 | case SHIFT_LSHIFTRT: |
35fb3d1f | 2485 | info->special = "mov.b\t%x0,%w0\n\tmov.b\t%y0,%x0\n\tmov.b\t%z0,%y0\n\tsub.b\t%z0,%z0"; |
692b7eb3 | 2486 | goto end; |
51c0c1d7 | 2487 | case SHIFT_ASHIFTRT: |
35fb3d1f | 2488 | info->special = "mov.b\t%x0,%w0\n\tmov.b\t%y0,%x0\n\tmov.b\t%z0,%y0\n\tshll\t%z0\n\tsubx\t%z0,%z0"; |
692b7eb3 | 2489 | goto end; |
48837e29 | 2490 | } |
48837e29 | 2491 | } |
e6bcfef9 JS |
2492 | else if (count == 8 && !TARGET_H8300) |
2493 | { | |
2494 | switch (shift_type) | |
2495 | { | |
2496 | case SHIFT_ASHIFT: | |
35fb3d1f | 2497 | info->special = "mov.w\t%e0,%f4\n\tmov.b\t%s4,%t4\n\tmov.b\t%t0,%s4\n\tmov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tmov.w\t%f4,%e0"; |
692b7eb3 | 2498 | goto end; |
e6bcfef9 | 2499 | case SHIFT_LSHIFTRT: |
35fb3d1f | 2500 | info->special = "mov.w\t%e0,%f4\n\tmov.b\t%t0,%s0\n\tmov.b\t%s4,%t0\n\tmov.b\t%t4,%s4\n\textu.w\t%f4\n\tmov.w\t%f4,%e0"; |
692b7eb3 | 2501 | goto end; |
e6bcfef9 | 2502 | case SHIFT_ASHIFTRT: |
35fb3d1f | 2503 | info->special = "mov.w\t%e0,%f4\n\tmov.b\t%t0,%s0\n\tmov.b\t%s4,%t0\n\tmov.b\t%t4,%s4\n\texts.w\t%f4\n\tmov.w\t%f4,%e0"; |
692b7eb3 | 2504 | goto end; |
e6bcfef9 JS |
2505 | } |
2506 | } | |
dd69e230 KH |
2507 | else if (count == 15 && !TARGET_H8300) |
2508 | { | |
2509 | switch (shift_type) | |
2510 | { | |
2511 | case SHIFT_ASHIFT: | |
2512 | info->special = "shlr.w\t%e0\n\tmov.w\t%f0,%e0\n\txor.w\t%f0,%f0\n\trotxr.l\t%S0"; | |
2513 | goto end; | |
2514 | case SHIFT_LSHIFTRT: | |
2515 | info->special = "shll.w\t%e0\n\tmov.w\t%e0,%f0\n\txor.w\t%e0,%e0\n\trotxl.l\t%S0"; | |
2516 | goto end; | |
2517 | } | |
2518 | } | |
a7812c0b KH |
2519 | else if ((TARGET_H8300 && count == 16) |
2520 | || (TARGET_H8300H && 16 <= count && count <= 19) | |
e0f19bd0 | 2521 | || (TARGET_H8300S && 16 <= count && count <= 21)) |
48837e29 | 2522 | { |
a7812c0b KH |
2523 | info->remainder = count - 16; |
2524 | ||
48837e29 DE |
2525 | switch (shift_type) |
2526 | { | |
2527 | case SHIFT_ASHIFT: | |
35fb3d1f | 2528 | info->special = "mov.w\t%f0,%e0\n\tsub.w\t%f0,%f0"; |
a7812c0b KH |
2529 | info->shift1 = "shll.l\t%S0"; |
2530 | info->shift2 = "shll.l\t#2,%S0"; | |
692b7eb3 | 2531 | goto end; |
51c0c1d7 | 2532 | case SHIFT_LSHIFTRT: |
35fb3d1f | 2533 | info->special = "mov.w\t%e0,%f0\n\tsub.w\t%e0,%e0"; |
a7812c0b KH |
2534 | info->shift1 = "shlr.l\t%S0"; |
2535 | info->shift2 = "shlr.l\t#2,%S0"; | |
692b7eb3 | 2536 | goto end; |
51c0c1d7 JL |
2537 | case SHIFT_ASHIFTRT: |
2538 | if (TARGET_H8300) | |
35fb3d1f | 2539 | info->special = "mov.w\t%e0,%f0\n\tshll\t%z0\n\tsubx\t%z0,%z0\n\tmov.b\t%z0,%y0"; |
51c0c1d7 | 2540 | else |
35fb3d1f | 2541 | info->special = "mov.w\t%e0,%f0\n\texts.l\t%S0"; |
a7812c0b KH |
2542 | info->shift1 = "shar.l\t%S0"; |
2543 | info->shift2 = "shar.l\t#2,%S0"; | |
692b7eb3 | 2544 | goto end; |
51c0c1d7 JL |
2545 | } |
2546 | } | |
4a4ae922 KH |
2547 | else if ((TARGET_H8300H && count == 24) |
2548 | || (TARGET_H8300S && 24 <= count && count <= 25)) | |
e6bcfef9 | 2549 | { |
4a4ae922 KH |
2550 | info->remainder = count - 24; |
2551 | ||
e6bcfef9 JS |
2552 | switch (shift_type) |
2553 | { | |
2554 | case SHIFT_ASHIFT: | |
35fb3d1f | 2555 | info->special = "mov.b\t%s0,%t0\n\tsub.b\t%s0,%s0\n\tmov.w\t%f0,%e0\n\tsub.w\t%f0,%f0"; |
4a4ae922 KH |
2556 | info->shift1 = "shll.l\t%S0"; |
2557 | info->shift2 = "shll.l\t#2,%S0"; | |
692b7eb3 | 2558 | goto end; |
e6bcfef9 | 2559 | case SHIFT_LSHIFTRT: |
35fb3d1f | 2560 | info->special = "mov.w\t%e0,%f0\n\tmov.b\t%t0,%s0\n\textu.w\t%f0\n\textu.l\t%S0"; |
4a4ae922 KH |
2561 | info->shift1 = "shlr.l\t%S0"; |
2562 | info->shift2 = "shlr.l\t#2,%S0"; | |
692b7eb3 | 2563 | goto end; |
e6bcfef9 | 2564 | case SHIFT_ASHIFTRT: |
35fb3d1f | 2565 | info->special = "mov.w\t%e0,%f0\n\tmov.b\t%t0,%s0\n\texts.w\t%f0\n\texts.l\t%S0"; |
4a4ae922 KH |
2566 | info->shift1 = "shar.l\t%S0"; |
2567 | info->shift2 = "shar.l\t#2,%S0"; | |
692b7eb3 | 2568 | goto end; |
e6bcfef9 JS |
2569 | } |
2570 | } | |
48837e29 DE |
2571 | else if (count == 31) |
2572 | { | |
dd69e230 | 2573 | if (TARGET_H8300) |
48837e29 | 2574 | { |
dd69e230 KH |
2575 | switch (shift_type) |
2576 | { | |
2577 | case SHIFT_ASHIFT: | |
2578 | info->special = "sub.w\t%e0,%e0\n\tshlr\t%w0\n\tmov.w\t%e0,%f0\n\trotxr\t%z0"; | |
2579 | goto end; | |
2580 | case SHIFT_LSHIFTRT: | |
2581 | info->special = "sub.w\t%f0,%f0\n\tshll\t%z0\n\tmov.w\t%f0,%e0\n\trotxl\t%w0"; | |
2582 | goto end; | |
2583 | case SHIFT_ASHIFTRT: | |
2584 | info->special = "shll\t%z0\n\tsubx\t%w0,%w0\n\tmov.b\t%w0,%x0\n\tmov.w\t%f0,%e0"; | |
2585 | goto end; | |
2586 | } | |
48837e29 DE |
2587 | } |
2588 | else | |
2589 | { | |
dd69e230 | 2590 | switch (shift_type) |
48837e29 | 2591 | { |
dd69e230 KH |
2592 | case SHIFT_ASHIFT: |
2593 | info->special = "shlr.l\t%S0\n\txor.l\t%S0,%S0\n\trotxr.l\t%S0"; | |
2594 | goto end; | |
2595 | case SHIFT_LSHIFTRT: | |
2596 | info->special = "shll.l\t%S0\n\txor.l\t%S0,%S0\n\trotxl.l\t%S0"; | |
2597 | goto end; | |
2598 | case SHIFT_ASHIFTRT: | |
2599 | info->special = "shll\t%e0\n\tsubx\t%w0,%w0\n\tmov.b\t%w0,%x0\n\tmov.w\t%f0,%e0"; | |
692b7eb3 | 2600 | goto end; |
48837e29 | 2601 | } |
48837e29 DE |
2602 | } |
2603 | } | |
769828ab | 2604 | abort (); |
51c0c1d7 | 2605 | |
48837e29 DE |
2606 | default: |
2607 | abort (); | |
07aae5c2 | 2608 | } |
48837e29 | 2609 | |
cb33eb17 KH |
2610 | end: |
2611 | if (!TARGET_H8300S) | |
2612 | info->shift2 = NULL; | |
07aae5c2 SC |
2613 | } |
2614 | ||
48837e29 DE |
2615 | /* Emit the assembler code for doing shifts. */ |
2616 | ||
441d04c6 | 2617 | const char * |
48837e29 | 2618 | emit_a_shift (insn, operands) |
441d04c6 | 2619 | rtx insn ATTRIBUTE_UNUSED; |
48837e29 | 2620 | rtx *operands; |
07aae5c2 | 2621 | { |
48837e29 | 2622 | static int loopend_lab; |
48837e29 DE |
2623 | rtx shift = operands[3]; |
2624 | enum machine_mode mode = GET_MODE (shift); | |
2625 | enum rtx_code code = GET_CODE (shift); | |
2626 | enum shift_type shift_type; | |
2627 | enum shift_mode shift_mode; | |
35fb3d1f | 2628 | struct shift_info info; |
48837e29 DE |
2629 | |
2630 | loopend_lab++; | |
2631 | ||
2632 | switch (mode) | |
2633 | { | |
2634 | case QImode: | |
2635 | shift_mode = QIshift; | |
2636 | break; | |
2637 | case HImode: | |
2638 | shift_mode = HIshift; | |
2639 | break; | |
2640 | case SImode: | |
2641 | shift_mode = SIshift; | |
2642 | break; | |
2643 | default: | |
2644 | abort (); | |
2645 | } | |
07aae5c2 | 2646 | |
48837e29 | 2647 | switch (code) |
07aae5c2 | 2648 | { |
48837e29 DE |
2649 | case ASHIFTRT: |
2650 | shift_type = SHIFT_ASHIFTRT; | |
2651 | break; | |
2652 | case LSHIFTRT: | |
2653 | shift_type = SHIFT_LSHIFTRT; | |
2654 | break; | |
2655 | case ASHIFT: | |
2656 | shift_type = SHIFT_ASHIFT; | |
2657 | break; | |
2658 | default: | |
2659 | abort (); | |
2660 | } | |
07aae5c2 | 2661 | |
48837e29 DE |
2662 | if (GET_CODE (operands[2]) != CONST_INT) |
2663 | { | |
07e4d94e | 2664 | /* Indexing by reg, so have to loop and test at top. */ |
48837e29 DE |
2665 | output_asm_insn ("mov.b %X2,%X4", operands); |
2666 | fprintf (asm_out_file, "\tble .Lle%d\n", loopend_lab); | |
2667 | ||
2668 | /* Get the assembler code to do one shift. */ | |
35fb3d1f | 2669 | get_shift_alg (shift_type, shift_mode, 1, &info); |
b5eaf9ba KH |
2670 | |
2671 | fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); | |
35fb3d1f | 2672 | output_asm_insn (info.shift1, operands); |
b5eaf9ba KH |
2673 | output_asm_insn ("add #0xff,%X4", operands); |
2674 | fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); | |
2675 | fprintf (asm_out_file, ".Lle%d:\n", loopend_lab); | |
2676 | ||
2677 | return ""; | |
48837e29 DE |
2678 | } |
2679 | else | |
2680 | { | |
2681 | int n = INTVAL (operands[2]); | |
48837e29 DE |
2682 | |
2683 | /* If the count is negative, make it 0. */ | |
2684 | if (n < 0) | |
2685 | n = 0; | |
2686 | /* If the count is too big, truncate it. | |
2687 | ANSI says shifts of GET_MODE_BITSIZE are undefined - we choose to | |
2688 | do the intuitive thing. */ | |
64530b82 | 2689 | else if ((unsigned int) n > GET_MODE_BITSIZE (mode)) |
48837e29 DE |
2690 | n = GET_MODE_BITSIZE (mode); |
2691 | ||
cb33eb17 | 2692 | get_shift_alg (shift_type, shift_mode, n, &info); |
48837e29 | 2693 | |
cb33eb17 | 2694 | switch (info.alg) |
48837e29 | 2695 | { |
cb33eb17 KH |
2696 | case SHIFT_SPECIAL: |
2697 | output_asm_insn (info.special, operands); | |
2698 | /* Fall through. */ | |
2699 | ||
48837e29 | 2700 | case SHIFT_INLINE: |
cb33eb17 KH |
2701 | n = info.remainder; |
2702 | ||
51c0c1d7 | 2703 | /* Emit two bit shifts first. */ |
35fb3d1f | 2704 | while (n > 1 && info.shift2 != NULL) |
51c0c1d7 | 2705 | { |
35fb3d1f | 2706 | output_asm_insn (info.shift2, operands); |
51c0c1d7 JL |
2707 | n -= 2; |
2708 | } | |
2709 | ||
2710 | /* Now emit one bit shifts for any residual. */ | |
2711 | while (n > 0) | |
2712 | { | |
35fb3d1f | 2713 | output_asm_insn (info.shift1, operands); |
51c0c1d7 JL |
2714 | n -= 1; |
2715 | } | |
2716 | ||
2717 | /* Keep track of CC. */ | |
35fb3d1f | 2718 | if (info.cc_valid_p) |
269c14e1 DE |
2719 | { |
2720 | cc_status.value1 = operands[0]; | |
35fb3d1f | 2721 | cc_status.flags |= info.cc_valid_p; |
269c14e1 | 2722 | } |
48837e29 | 2723 | return ""; |
51c0c1d7 | 2724 | |
48837e29 DE |
2725 | case SHIFT_ROT_AND: |
2726 | { | |
2727 | int m = GET_MODE_BITSIZE (mode) - n; | |
2728 | int mask = (shift_type == SHIFT_ASHIFT | |
441d04c6 KG |
2729 | ? ((1 << (GET_MODE_BITSIZE (mode) - n)) - 1) << n |
2730 | : (1 << (GET_MODE_BITSIZE (mode) - n)) - 1); | |
48837e29 | 2731 | char insn_buf[200]; |
b5eaf9ba | 2732 | |
48837e29 DE |
2733 | /* Not all possibilities of rotate are supported. They shouldn't |
2734 | be generated, but let's watch for 'em. */ | |
35fb3d1f | 2735 | if (info.shift1 == 0) |
48837e29 | 2736 | abort (); |
51c0c1d7 JL |
2737 | |
2738 | /* Emit two bit rotates first. */ | |
35fb3d1f | 2739 | while (m > 1 && info.shift2 != NULL) |
51c0c1d7 | 2740 | { |
35fb3d1f | 2741 | output_asm_insn (info.shift2, operands); |
51c0c1d7 JL |
2742 | m -= 2; |
2743 | } | |
2744 | ||
2745 | /* Now single bit rotates for any residual. */ | |
2746 | while (m > 0) | |
2747 | { | |
35fb3d1f | 2748 | output_asm_insn (info.shift1, operands); |
51c0c1d7 JL |
2749 | m -= 1; |
2750 | } | |
2751 | ||
2752 | /* Now mask off the high bits. */ | |
48837e29 DE |
2753 | if (TARGET_H8300) |
2754 | { | |
2755 | switch (mode) | |
2756 | { | |
2757 | case QImode: | |
3e39bdb9 | 2758 | sprintf (insn_buf, "and\t#%d,%%X0", mask); |
48837e29 | 2759 | cc_status.value1 = operands[0]; |
065bbfe6 | 2760 | cc_status.flags |= CC_NO_CARRY; |
48837e29 DE |
2761 | break; |
2762 | case HImode: | |
3e39bdb9 | 2763 | sprintf (insn_buf, "and\t#%d,%%s0\n\tand\t#%d,%%t0", |
441d04c6 | 2764 | mask & 255, mask >> 8); |
48837e29 DE |
2765 | break; |
2766 | case SImode: | |
2767 | abort (); | |
441d04c6 KG |
2768 | default: |
2769 | break; | |
48837e29 DE |
2770 | } |
2771 | } | |
2772 | else | |
2773 | { | |
3e39bdb9 | 2774 | sprintf (insn_buf, "and.%c\t#%d,%%%c0", |
48837e29 DE |
2775 | "bwl"[shift_mode], mask, |
2776 | mode == QImode ? 'X' : mode == HImode ? 'T' : 'S'); | |
2777 | cc_status.value1 = operands[0]; | |
065bbfe6 | 2778 | cc_status.flags |= CC_NO_CARRY; |
48837e29 DE |
2779 | } |
2780 | output_asm_insn (insn_buf, operands); | |
2781 | return ""; | |
2782 | } | |
b5eaf9ba | 2783 | |
b5eaf9ba KH |
2784 | case SHIFT_LOOP: |
2785 | /* A loop to shift by a "large" constant value. | |
2786 | If we have shift-by-2 insns, use them. */ | |
35fb3d1f | 2787 | if (info.shift2 != NULL) |
b5eaf9ba KH |
2788 | { |
2789 | fprintf (asm_out_file, "\tmov.b #%d,%sl\n", n / 2, | |
2790 | names_big[REGNO (operands[4])]); | |
2791 | fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); | |
35fb3d1f | 2792 | output_asm_insn (info.shift2, operands); |
b5eaf9ba KH |
2793 | output_asm_insn ("add #0xff,%X4", operands); |
2794 | fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); | |
2795 | if (n % 2) | |
35fb3d1f | 2796 | output_asm_insn (info.shift1, operands); |
b5eaf9ba KH |
2797 | } |
2798 | else | |
2799 | { | |
2800 | fprintf (asm_out_file, "\tmov.b #%d,%sl\n", n, | |
2801 | names_big[REGNO (operands[4])]); | |
2802 | fprintf (asm_out_file, ".Llt%d:\n", loopend_lab); | |
35fb3d1f | 2803 | output_asm_insn (info.shift1, operands); |
b5eaf9ba KH |
2804 | output_asm_insn ("add #0xff,%X4", operands); |
2805 | fprintf (asm_out_file, "\tbne .Llt%d\n", loopend_lab); | |
2806 | } | |
51c0c1d7 | 2807 | return ""; |
b5eaf9ba KH |
2808 | |
2809 | default: | |
2810 | abort (); | |
51c0c1d7 | 2811 | } |
07aae5c2 | 2812 | } |
07aae5c2 | 2813 | } |
48837e29 | 2814 | \f |
edd71f0f KH |
2815 | /* A rotation by a non-constant will cause a loop to be generated, in |
2816 | which a rotation by one bit is used. A rotation by a constant, | |
2817 | including the one in the loop, will be taken care of by | |
2818 | emit_a_rotate () at the insn emit time. */ | |
2819 | ||
2820 | int | |
2821 | expand_a_rotate (code, operands) | |
2822 | int code; | |
2823 | rtx operands[]; | |
2824 | { | |
2825 | rtx dst = operands[0]; | |
2826 | rtx src = operands[1]; | |
2827 | rtx rotate_amount = operands[2]; | |
2828 | enum machine_mode mode = GET_MODE (dst); | |
2829 | rtx tmp; | |
2830 | ||
2831 | /* We rotate in place. */ | |
2832 | emit_move_insn (dst, src); | |
2833 | ||
2834 | if (GET_CODE (rotate_amount) != CONST_INT) | |
2835 | { | |
2836 | rtx counter = gen_reg_rtx (QImode); | |
2837 | rtx start_label = gen_label_rtx (); | |
2838 | rtx end_label = gen_label_rtx (); | |
2839 | ||
2840 | /* If the rotate amount is less than or equal to 0, | |
2841 | we go out of the loop. */ | |
2842 | emit_cmp_and_jump_insns (rotate_amount, GEN_INT (0), | |
2843 | LE, NULL_RTX, QImode, 0, 0, end_label); | |
2844 | ||
2845 | /* Initialize the loop counter. */ | |
2846 | emit_move_insn (counter, rotate_amount); | |
2847 | ||
2848 | emit_label (start_label); | |
2849 | ||
2850 | /* Rotate by one bit. */ | |
2851 | tmp = gen_rtx (code, mode, dst, GEN_INT (1)); | |
2852 | emit_insn (gen_rtx_SET (mode, dst, tmp)); | |
2853 | ||
2854 | /* Decrement the counter by 1. */ | |
2855 | tmp = gen_rtx_PLUS (QImode, counter, GEN_INT (-1)); | |
2856 | emit_insn (gen_rtx_SET (VOIDmode, counter, tmp)); | |
2857 | ||
2858 | /* If the loop counter is non-zero, we go back to the beginning | |
2859 | of the loop. */ | |
2860 | emit_cmp_and_jump_insns (counter, GEN_INT (0), | |
2861 | NE, NULL_RTX, QImode, 1, 0, start_label); | |
2862 | ||
2863 | emit_label (end_label); | |
2864 | } | |
2865 | else | |
2866 | { | |
2867 | /* Rotate by AMOUNT bits. */ | |
2868 | tmp = gen_rtx (code, mode, dst, rotate_amount); | |
2869 | emit_insn (gen_rtx_SET (mode, dst, tmp)); | |
2870 | } | |
2871 | ||
2872 | return 1; | |
2873 | } | |
2874 | ||
2875 | /* Emit rotate insns. */ | |
2876 | ||
2877 | const char * | |
2878 | emit_a_rotate (code, operands) | |
2879 | int code; | |
2880 | rtx *operands; | |
2881 | { | |
2882 | rtx dst = operands[0]; | |
2883 | rtx rotate_amount = operands[2]; | |
2884 | enum shift_mode rotate_mode; | |
2885 | enum shift_type rotate_type; | |
2886 | const char *insn_buf; | |
2887 | int bits; | |
2888 | int amount; | |
2889 | enum machine_mode mode = GET_MODE (dst); | |
2890 | ||
2891 | if (GET_CODE (rotate_amount) != CONST_INT) | |
2892 | abort (); | |
2893 | ||
2894 | switch (mode) | |
2895 | { | |
2896 | case QImode: | |
2897 | rotate_mode = QIshift; | |
2898 | break; | |
2899 | case HImode: | |
2900 | rotate_mode = HIshift; | |
2901 | break; | |
2902 | case SImode: | |
2903 | rotate_mode = SIshift; | |
2904 | break; | |
2905 | default: | |
2906 | abort (); | |
2907 | } | |
2908 | ||
2909 | switch (code) | |
2910 | { | |
2911 | case ROTATERT: | |
2912 | rotate_type = SHIFT_ASHIFT; | |
2913 | break; | |
2914 | case ROTATE: | |
2915 | rotate_type = SHIFT_LSHIFTRT; | |
2916 | break; | |
2917 | default: | |
2918 | abort (); | |
2919 | } | |
2920 | ||
2921 | amount = INTVAL (rotate_amount); | |
2922 | ||
2923 | /* Clean up AMOUNT. */ | |
2924 | if (amount < 0) | |
2925 | amount = 0; | |
2926 | if ((unsigned int) amount > GET_MODE_BITSIZE (mode)) | |
2927 | amount = GET_MODE_BITSIZE (mode); | |
2928 | ||
2929 | /* Determine the faster direction. After this phase, amount will be | |
2930 | at most a half of GET_MODE_BITSIZE (mode). */ | |
2931 | if ((unsigned int) amount > GET_MODE_BITSIZE (mode) / 2) | |
2932 | { | |
2933 | /* Flip the direction. */ | |
2934 | amount = GET_MODE_BITSIZE (mode) - amount; | |
2935 | rotate_type = | |
2936 | (rotate_type == SHIFT_ASHIFT) ? SHIFT_LSHIFTRT : SHIFT_ASHIFT; | |
2937 | } | |
2938 | ||
2939 | /* See if a byte swap (in HImode) or a word swap (in SImode) can | |
2940 | boost up the rotation. */ | |
2941 | if ((mode == HImode && TARGET_H8300 && amount >= 5) | |
2942 | || (mode == HImode && TARGET_H8300H && amount >= 6) | |
2943 | || (mode == HImode && TARGET_H8300S && amount == 8) | |
2944 | || (mode == SImode && TARGET_H8300H && amount >= 10) | |
2945 | || (mode == SImode && TARGET_H8300S && amount >= 13)) | |
2946 | { | |
2947 | switch (mode) | |
2948 | { | |
2949 | case HImode: | |
2950 | /* This code works on any family. */ | |
2951 | insn_buf = "xor.b\t%s0,%t0\n\txor.b\t%t0,%s0\n\txor.b\t%s0,%t0"; | |
2952 | output_asm_insn (insn_buf, operands); | |
2953 | break; | |
2954 | ||
2955 | case SImode: | |
2956 | /* This code works on the H8/300H and H8/S. */ | |
2957 | insn_buf = "xor.w\t%e0,%f0\n\txor.w\t%f0,%e0\n\txor.w\t%e0,%f0"; | |
2958 | output_asm_insn (insn_buf, operands); | |
2959 | break; | |
2960 | ||
2961 | default: | |
2962 | abort (); | |
2963 | } | |
2964 | ||
2965 | /* Adjust AMOUNT and flip the direction. */ | |
2966 | amount = GET_MODE_BITSIZE (mode) / 2 - amount; | |
2967 | rotate_type = | |
2968 | (rotate_type == SHIFT_ASHIFT) ? SHIFT_LSHIFTRT : SHIFT_ASHIFT; | |
2969 | } | |
2970 | ||
2971 | /* Emit rotate insns. */ | |
2972 | for (bits = TARGET_H8300S ? 2 : 1; bits > 0; bits /= 2) | |
2973 | { | |
2974 | if (bits == 2) | |
2975 | insn_buf = rotate_two[rotate_type][rotate_mode]; | |
2976 | else | |
2977 | insn_buf = rotate_one[cpu_type][rotate_type][rotate_mode]; | |
2c54abce | 2978 | |
edd71f0f KH |
2979 | for (; amount >= bits; amount -= bits) |
2980 | output_asm_insn (insn_buf, operands); | |
2981 | } | |
2982 | ||
2983 | return ""; | |
2984 | } | |
2985 | \f | |
48837e29 | 2986 | /* Fix the operands of a gen_xxx so that it could become a bit |
2c54abce | 2987 | operating insn. */ |
07aae5c2 SC |
2988 | |
2989 | int | |
48837e29 DE |
2990 | fix_bit_operand (operands, what, type) |
2991 | rtx *operands; | |
441d04c6 | 2992 | int what; |
48837e29 | 2993 | enum rtx_code type; |
07aae5c2 | 2994 | { |
abc95ed3 | 2995 | /* The bit_operand predicate accepts any memory during RTL generation, but |
48837e29 DE |
2996 | only 'U' memory afterwards, so if this is a MEM operand, we must force |
2997 | it to be valid for 'U' by reloading the address. */ | |
07aae5c2 | 2998 | |
48837e29 | 2999 | if (GET_CODE (operands[2]) == CONST_INT) |
07aae5c2 | 3000 | { |
48837e29 DE |
3001 | if (CONST_OK_FOR_LETTER_P (INTVAL (operands[2]), what)) |
3002 | { | |
3003 | /* Ok to have a memory dest. */ | |
1a63219b KH |
3004 | if (GET_CODE (operands[0]) == MEM |
3005 | && !EXTRA_CONSTRAINT (operands[0], 'U')) | |
48837e29 | 3006 | { |
c5c76735 JL |
3007 | rtx mem = gen_rtx_MEM (GET_MODE (operands[0]), |
3008 | copy_to_mode_reg (Pmode, | |
3009 | XEXP (operands[0], 0))); | |
c6df88cb | 3010 | MEM_COPY_ATTRIBUTES (mem, operands[0]); |
48837e29 DE |
3011 | operands[0] = mem; |
3012 | } | |
3013 | ||
1a63219b KH |
3014 | if (GET_CODE (operands[1]) == MEM |
3015 | && !EXTRA_CONSTRAINT (operands[1], 'U')) | |
48837e29 | 3016 | { |
c5c76735 JL |
3017 | rtx mem = gen_rtx_MEM (GET_MODE (operands[1]), |
3018 | copy_to_mode_reg (Pmode, | |
3019 | XEXP (operands[1], 0))); | |
c6df88cb | 3020 | MEM_COPY_ATTRIBUTES (mem, operands[0]); |
48837e29 DE |
3021 | operands[1] = mem; |
3022 | } | |
3023 | return 0; | |
3024 | } | |
3025 | } | |
07aae5c2 | 3026 | |
48837e29 | 3027 | /* Dest and src op must be register. */ |
07aae5c2 | 3028 | |
48837e29 DE |
3029 | operands[1] = force_reg (QImode, operands[1]); |
3030 | { | |
3031 | rtx res = gen_reg_rtx (QImode); | |
c5c76735 JL |
3032 | emit_insn (gen_rtx_SET (VOIDmode, res, |
3033 | gen_rtx (type, QImode, operands[1], operands[2]))); | |
3034 | emit_insn (gen_rtx_SET (VOIDmode, operands[0], res)); | |
48837e29 DE |
3035 | } |
3036 | return 1; | |
07aae5c2 | 3037 | } |
f5b65a56 | 3038 | |
f5b65a56 JL |
3039 | /* Return nonzero if FUNC is an interrupt function as specified |
3040 | by the "interrupt" attribute. */ | |
3041 | ||
3042 | static int | |
3043 | h8300_interrupt_function_p (func) | |
3044 | tree func; | |
3045 | { | |
3046 | tree a; | |
3047 | ||
3048 | if (TREE_CODE (func) != FUNCTION_DECL) | |
3049 | return 0; | |
3050 | ||
91d231cb | 3051 | a = lookup_attribute ("interrupt_handler", DECL_ATTRIBUTES (func)); |
f5b65a56 JL |
3052 | return a != NULL_TREE; |
3053 | } | |
3054 | ||
fabe72bb JL |
3055 | /* Return nonzero if FUNC is an OS_Task function as specified |
3056 | by the "OS_Task" attribute. */ | |
3057 | ||
3058 | static int | |
3059 | h8300_os_task_function_p (func) | |
3060 | tree func; | |
3061 | { | |
3062 | tree a; | |
3063 | ||
3064 | if (TREE_CODE (func) != FUNCTION_DECL) | |
3065 | return 0; | |
3066 | ||
91d231cb | 3067 | a = lookup_attribute ("OS_Task", DECL_ATTRIBUTES (func)); |
fabe72bb JL |
3068 | return a != NULL_TREE; |
3069 | } | |
3070 | ||
3071 | /* Return nonzero if FUNC is a monitor function as specified | |
3072 | by the "monitor" attribute. */ | |
3073 | ||
3074 | static int | |
3075 | h8300_monitor_function_p (func) | |
3076 | tree func; | |
3077 | { | |
3078 | tree a; | |
3079 | ||
3080 | if (TREE_CODE (func) != FUNCTION_DECL) | |
3081 | return 0; | |
3082 | ||
91d231cb | 3083 | a = lookup_attribute ("monitor", DECL_ATTRIBUTES (func)); |
fabe72bb JL |
3084 | return a != NULL_TREE; |
3085 | } | |
3086 | ||
f5b65a56 JL |
3087 | /* Return nonzero if FUNC is a function that should be called |
3088 | through the function vector. */ | |
3089 | ||
3090 | int | |
3091 | h8300_funcvec_function_p (func) | |
3092 | tree func; | |
3093 | { | |
3094 | tree a; | |
3095 | ||
3096 | if (TREE_CODE (func) != FUNCTION_DECL) | |
3097 | return 0; | |
3098 | ||
91d231cb | 3099 | a = lookup_attribute ("function_vector", DECL_ATTRIBUTES (func)); |
f5b65a56 JL |
3100 | return a != NULL_TREE; |
3101 | } | |
3102 | ||
887a8bd9 | 3103 | /* Return nonzero if DECL is a variable that's in the eight bit |
15dc331e JL |
3104 | data area. */ |
3105 | ||
3106 | int | |
fabdc32d | 3107 | h8300_eightbit_data_p (decl) |
15dc331e JL |
3108 | tree decl; |
3109 | { | |
3110 | tree a; | |
3111 | ||
3112 | if (TREE_CODE (decl) != VAR_DECL) | |
3113 | return 0; | |
3114 | ||
91d231cb | 3115 | a = lookup_attribute ("eightbit_data", DECL_ATTRIBUTES (decl)); |
15dc331e JL |
3116 | return a != NULL_TREE; |
3117 | } | |
3118 | ||
887a8bd9 JL |
3119 | /* Return nonzero if DECL is a variable that's in the tiny |
3120 | data area. */ | |
3121 | ||
3122 | int | |
3123 | h8300_tiny_data_p (decl) | |
3124 | tree decl; | |
3125 | { | |
3126 | tree a; | |
3127 | ||
3128 | if (TREE_CODE (decl) != VAR_DECL) | |
3129 | return 0; | |
3130 | ||
91d231cb | 3131 | a = lookup_attribute ("tiny_data", DECL_ATTRIBUTES (decl)); |
887a8bd9 JL |
3132 | return a != NULL_TREE; |
3133 | } | |
3134 | ||
91d231cb | 3135 | /* Supported attributes: |
f5b65a56 | 3136 | |
97c5ec1d | 3137 | interrupt_handler: output a prologue and epilogue suitable for an |
f5b65a56 JL |
3138 | interrupt handler. |
3139 | ||
97c5ec1d | 3140 | function_vector: This function should be called through the |
887a8bd9 JL |
3141 | function vector. |
3142 | ||
3143 | eightbit_data: This variable lives in the 8-bit data area and can | |
3144 | be referenced with 8-bit absolute memory addresses. | |
3145 | ||
3146 | tiny_data: This variable lives in the tiny data area and can be | |
3147 | referenced with 16-bit absolute memory references. */ | |
f5b65a56 | 3148 | |
91d231cb | 3149 | const struct attribute_spec h8300_attribute_table[] = |
f5b65a56 | 3150 | { |
91d231cb JM |
3151 | /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ |
3152 | { "interrupt_handler", 0, 0, true, false, false, h8300_handle_fndecl_attribute }, | |
3153 | { "OS_Task", 0, 0, true, false, false, h8300_handle_fndecl_attribute }, | |
3154 | { "monitor", 0, 0, true, false, false, h8300_handle_fndecl_attribute }, | |
3155 | { "function_vector", 0, 0, true, false, false, h8300_handle_fndecl_attribute }, | |
3156 | { "eightbit_data", 0, 0, true, false, false, h8300_handle_eightbit_data_attribute }, | |
3157 | { "tiny_data", 0, 0, true, false, false, h8300_handle_tiny_data_attribute }, | |
3158 | { NULL, 0, 0, false, false, false, NULL } | |
3159 | }; | |
f5b65a56 | 3160 | |
15dc331e | 3161 | |
91d231cb JM |
3162 | /* Handle an attribute requiring a FUNCTION_DECL; arguments as in |
3163 | struct attribute_spec.handler. */ | |
3164 | static tree | |
3165 | h8300_handle_fndecl_attribute (node, name, args, flags, no_add_attrs) | |
3166 | tree *node; | |
3167 | tree name; | |
3168 | tree args ATTRIBUTE_UNUSED; | |
3169 | int flags ATTRIBUTE_UNUSED; | |
3170 | bool *no_add_attrs; | |
3171 | { | |
3172 | if (TREE_CODE (*node) != FUNCTION_DECL) | |
3173 | { | |
3174 | warning ("`%s' attribute only applies to functions", | |
3175 | IDENTIFIER_POINTER (name)); | |
3176 | *no_add_attrs = true; | |
3177 | } | |
3178 | ||
3179 | return NULL_TREE; | |
3180 | } | |
3181 | ||
3182 | /* Handle an "eightbit_data" attribute; arguments as in | |
3183 | struct attribute_spec.handler. */ | |
3184 | static tree | |
3185 | h8300_handle_eightbit_data_attribute (node, name, args, flags, no_add_attrs) | |
3186 | tree *node; | |
3187 | tree name; | |
3188 | tree args ATTRIBUTE_UNUSED; | |
3189 | int flags ATTRIBUTE_UNUSED; | |
3190 | bool *no_add_attrs; | |
3191 | { | |
3192 | tree decl = *node; | |
3193 | ||
3194 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)) | |
15dc331e JL |
3195 | { |
3196 | if (DECL_INITIAL (decl) == NULL_TREE) | |
3197 | { | |
3198 | warning ("Only initialized variables can be placed into the 8-bit area."); | |
91d231cb | 3199 | *no_add_attrs = true; |
15dc331e | 3200 | } |
91d231cb JM |
3201 | else |
3202 | DECL_SECTION_NAME (decl) = build_string (7, ".eight"); | |
3203 | } | |
3204 | else | |
3205 | { | |
3206 | warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name)); | |
3207 | *no_add_attrs = true; | |
887a8bd9 JL |
3208 | } |
3209 | ||
91d231cb JM |
3210 | return NULL_TREE; |
3211 | } | |
3212 | ||
3213 | /* Handle an "tiny_data" attribute; arguments as in | |
3214 | struct attribute_spec.handler. */ | |
3215 | static tree | |
3216 | h8300_handle_tiny_data_attribute (node, name, args, flags, no_add_attrs) | |
3217 | tree *node; | |
3218 | tree name; | |
3219 | tree args ATTRIBUTE_UNUSED; | |
3220 | int flags ATTRIBUTE_UNUSED; | |
3221 | bool *no_add_attrs; | |
3222 | { | |
3223 | tree decl = *node; | |
3224 | ||
3225 | if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)) | |
887a8bd9 JL |
3226 | { |
3227 | if (DECL_INITIAL (decl) == NULL_TREE) | |
3228 | { | |
3229 | warning ("Only initialized variables can be placed into the 8-bit area."); | |
91d231cb | 3230 | *no_add_attrs = true; |
887a8bd9 | 3231 | } |
91d231cb JM |
3232 | else |
3233 | DECL_SECTION_NAME (decl) = build_string (6, ".tiny"); | |
3234 | } | |
3235 | else | |
3236 | { | |
3237 | warning ("`%s' attribute ignored", IDENTIFIER_POINTER (name)); | |
3238 | *no_add_attrs = true; | |
15dc331e | 3239 | } |
07e4d94e | 3240 | |
91d231cb | 3241 | return NULL_TREE; |
f5b65a56 JL |
3242 | } |
3243 | ||
441d04c6 | 3244 | void |
887a8bd9 JL |
3245 | h8300_encode_label (decl) |
3246 | tree decl; | |
3247 | { | |
441d04c6 | 3248 | const char *str = XSTR (XEXP (DECL_RTL (decl), 0), 0); |
887a8bd9 | 3249 | int len = strlen (str); |
93cacb72 | 3250 | char *newstr = alloca (len + 2); |
887a8bd9 | 3251 | |
93cacb72 KH |
3252 | newstr[0] = '&'; |
3253 | strcpy (&newstr[1], str); | |
887a8bd9 | 3254 | |
93cacb72 KH |
3255 | XSTR (XEXP (DECL_RTL (decl), 0), 0) = |
3256 | ggc_alloc_string (newstr, len + 1); | |
887a8bd9 JL |
3257 | } |
3258 | ||
441d04c6 | 3259 | const char * |
bd93f126 JL |
3260 | output_simode_bld (bild, log2, operands) |
3261 | int bild; | |
3262 | int log2; | |
3263 | rtx operands[]; | |
3264 | { | |
3265 | /* Clear the destination register. */ | |
a1616dd9 | 3266 | if (TARGET_H8300H || TARGET_H8300S) |
bd93f126 JL |
3267 | output_asm_insn ("sub.l\t%S0,%S0", operands); |
3268 | else | |
3269 | output_asm_insn ("sub.w\t%e0,%e0\n\tsub.w\t%f0,%f0", operands); | |
3270 | ||
3271 | /* Get the bit number we want to load. */ | |
3272 | if (log2) | |
3273 | operands[2] = GEN_INT (exact_log2 (INTVAL (operands[2]))); | |
3274 | ||
3275 | /* Now output the bit load or bit inverse load, and store it in | |
3276 | the destination. */ | |
3277 | if (bild) | |
3278 | output_asm_insn ("bild\t%Z2,%Y1\n\tbst\t#0,%w0", operands); | |
3279 | else | |
3280 | output_asm_insn ("bld\t%Z2,%Y1\n\tbst\t#0,%w0", operands); | |
3281 | ||
3282 | /* All done. */ | |
3283 | return ""; | |
3284 | } | |
e6219736 | 3285 | |
9ec36da5 | 3286 | /* Given INSN and its current length LENGTH, return the adjustment |
e6219736 JL |
3287 | (in bytes) to correctly compute INSN's length. |
3288 | ||
3289 | We use this to get the lengths of various memory references correct. */ | |
3290 | ||
441d04c6 | 3291 | int |
e6219736 JL |
3292 | h8300_adjust_insn_length (insn, length) |
3293 | rtx insn; | |
441d04c6 | 3294 | int length ATTRIBUTE_UNUSED; |
e6219736 | 3295 | { |
04b6000c VM |
3296 | rtx pat; |
3297 | ||
47cf37f9 JL |
3298 | /* We must filter these ou before calling get_attr_adjust_length. */ |
3299 | if (GET_CODE (PATTERN (insn)) == USE | |
3300 | || GET_CODE (PATTERN (insn)) == CLOBBER | |
098f2a1e JL |
3301 | || GET_CODE (PATTERN (insn)) == SEQUENCE |
3302 | || GET_CODE (PATTERN (insn)) == ADDR_VEC | |
3303 | || GET_CODE (PATTERN (insn)) == ADDR_DIFF_VEC) | |
47cf37f9 JL |
3304 | return 0; |
3305 | ||
04b6000c VM |
3306 | if (get_attr_adjust_length (insn) == ADJUST_LENGTH_NO) |
3307 | return 0; | |
3308 | ||
3309 | pat = PATTERN (insn); | |
e6219736 JL |
3310 | |
3311 | /* Adjust length for reg->mem and mem->reg copies. */ | |
3312 | if (GET_CODE (pat) == SET | |
3313 | && (GET_CODE (SET_SRC (pat)) == MEM | |
3314 | || GET_CODE (SET_DEST (pat)) == MEM)) | |
3315 | { | |
3316 | /* This insn might need a length adjustment. */ | |
3317 | rtx addr; | |
3318 | ||
3319 | if (GET_CODE (SET_SRC (pat)) == MEM) | |
3320 | addr = XEXP (SET_SRC (pat), 0); | |
3321 | else | |
3322 | addr = XEXP (SET_DEST (pat), 0); | |
3323 | ||
3324 | /* On the H8/300, only one adjustment is necessary; if the | |
3325 | address mode is register indirect, then this insn is two | |
3326 | bytes shorter than indicated in the machine description. */ | |
3327 | if (TARGET_H8300 && GET_CODE (addr) == REG) | |
3328 | return -2; | |
3329 | ||
a1616dd9 | 3330 | /* On the H8/300H and H8/S, register indirect is 6 bytes shorter than |
e6219736 | 3331 | indicated in the machine description. */ |
a1616dd9 JL |
3332 | if ((TARGET_H8300H || TARGET_H8300S) |
3333 | && GET_CODE (addr) == REG) | |
e6219736 JL |
3334 | return -6; |
3335 | ||
a1616dd9 JL |
3336 | /* On the H8/300H and H8/300S, reg + d, for small displacements is 4 |
3337 | bytes shorter than indicated in the machine description. */ | |
3338 | if ((TARGET_H8300H || TARGET_H8300S) | |
e6219736 JL |
3339 | && GET_CODE (addr) == PLUS |
3340 | && GET_CODE (XEXP (addr, 0)) == REG | |
3341 | && GET_CODE (XEXP (addr, 1)) == CONST_INT | |
3342 | && INTVAL (XEXP (addr, 1)) > -32768 | |
3343 | && INTVAL (XEXP (addr, 1)) < 32767) | |
3344 | return -4; | |
887a8bd9 | 3345 | |
a1616dd9 | 3346 | /* On the H8/300H and H8/300S, abs:16 is two bytes shorter than the |
887a8bd9 | 3347 | more general abs:24. */ |
a1616dd9 | 3348 | if ((TARGET_H8300H || TARGET_H8300S) |
887a8bd9 JL |
3349 | && GET_CODE (addr) == SYMBOL_REF |
3350 | && TINY_DATA_NAME_P (XSTR (addr, 0))) | |
3351 | return -2; | |
e6219736 JL |
3352 | } |
3353 | ||
3354 | /* Loading some constants needs adjustment. */ | |
3355 | if (GET_CODE (pat) == SET | |
3356 | && GET_CODE (SET_SRC (pat)) == CONST_INT | |
3357 | && GET_MODE (SET_DEST (pat)) == SImode | |
3358 | && INTVAL (SET_SRC (pat)) != 0) | |
3359 | { | |
64530b82 KH |
3360 | int val = INTVAL (SET_SRC (pat)); |
3361 | ||
e6219736 | 3362 | if (TARGET_H8300 |
64530b82 KH |
3363 | && ((val & 0xffff) == 0 |
3364 | || ((val >> 16) & 0xffff) == 0)) | |
e6219736 JL |
3365 | return -2; |
3366 | ||
a1616dd9 | 3367 | if (TARGET_H8300H || TARGET_H8300S) |
e6219736 | 3368 | { |
e6219736 JL |
3369 | if (val == (val & 0xff) |
3370 | || val == (val & 0xff00)) | |
3371 | return -6; | |
3372 | ||
3373 | if (val == -4 || val == -2 || val == -1) | |
3374 | return -6; | |
3375 | } | |
3376 | } | |
3377 | ||
dd4fd0a0 JL |
3378 | /* Shifts need various adjustments. */ |
3379 | if (GET_CODE (pat) == PARALLEL | |
3380 | && GET_CODE (XVECEXP (pat, 0, 0)) == SET | |
3381 | && (GET_CODE (SET_SRC (XVECEXP (pat, 0, 0))) == ASHIFTRT | |
07e4d94e KH |
3382 | || GET_CODE (SET_SRC (XVECEXP (pat, 0, 0))) == LSHIFTRT |
3383 | || GET_CODE (SET_SRC (XVECEXP (pat, 0, 0))) == ASHIFT)) | |
dd4fd0a0 JL |
3384 | { |
3385 | rtx src = SET_SRC (XVECEXP (pat, 0, 0)); | |
3386 | enum machine_mode mode = GET_MODE (src); | |
04b6000c | 3387 | int shift; |
dd4fd0a0 JL |
3388 | |
3389 | if (GET_CODE (XEXP (src, 1)) != CONST_INT) | |
3390 | return 0; | |
3391 | ||
04b6000c VM |
3392 | shift = INTVAL (XEXP (src, 1)); |
3393 | /* According to ANSI, negative shift is undefined. It is | |
3394 | considered to be zero in this case (see function | |
07e4d94e | 3395 | emit_a_shift above). */ |
04b6000c VM |
3396 | if (shift < 0) |
3397 | shift = 0; | |
3398 | ||
dd4fd0a0 JL |
3399 | /* QImode shifts by small constants take one insn |
3400 | per shift. So the adjustment is 20 (md length) - | |
3401 | # shifts * 2. */ | |
04b6000c VM |
3402 | if (mode == QImode && shift <= 4) |
3403 | return -(20 - shift * 2); | |
dd4fd0a0 JL |
3404 | |
3405 | /* Similarly for HImode and SImode shifts by | |
a1616dd9 JL |
3406 | small constants on the H8/300H and H8/300S. */ |
3407 | if ((TARGET_H8300H || TARGET_H8300S) | |
04b6000c VM |
3408 | && (mode == HImode || mode == SImode) && shift <= 4) |
3409 | return -(20 - shift * 2); | |
dd4fd0a0 JL |
3410 | |
3411 | /* HImode shifts by small constants for the H8/300. */ | |
04b6000c VM |
3412 | if (mode == HImode && shift <= 4) |
3413 | return -(20 - (shift * (GET_CODE (src) == ASHIFT ? 2 : 4))); | |
dd4fd0a0 JL |
3414 | |
3415 | /* SImode shifts by small constants for the H8/300. */ | |
04b6000c VM |
3416 | if (mode == SImode && shift <= 2) |
3417 | return -(20 - (shift * (GET_CODE (src) == ASHIFT ? 6 : 8))); | |
dd4fd0a0 JL |
3418 | |
3419 | /* XXX ??? Could check for more shift/rotate cases here. */ | |
3420 | } | |
07e4d94e | 3421 | |
edd71f0f KH |
3422 | /* Rotations need various adjustments. */ |
3423 | if (GET_CODE (pat) == SET | |
3424 | && (GET_CODE (SET_SRC (pat)) == ROTATE | |
3425 | || GET_CODE (SET_SRC (pat)) == ROTATERT)) | |
3426 | { | |
3427 | rtx src = SET_SRC (pat); | |
3428 | enum machine_mode mode = GET_MODE (src); | |
3429 | int amount; | |
3430 | int states = 0; | |
3431 | ||
3432 | if (GET_CODE (XEXP (src, 1)) != CONST_INT) | |
3433 | return 0; | |
3434 | ||
3435 | amount = INTVAL (XEXP (src, 1)); | |
3436 | ||
3437 | /* Clean up AMOUNT. */ | |
3438 | if (amount < 0) | |
3439 | amount = 0; | |
3440 | if ((unsigned int) amount > GET_MODE_BITSIZE (mode)) | |
3441 | amount = GET_MODE_BITSIZE (mode); | |
3442 | ||
3443 | /* Determine the faster direction. After this phase, amount | |
3444 | will be at most a half of GET_MODE_BITSIZE (mode). */ | |
3445 | if ((unsigned int) amount > GET_MODE_BITSIZE (mode) / 2) | |
3446 | /* Flip the direction. */ | |
3447 | amount = GET_MODE_BITSIZE (mode) - amount; | |
3448 | ||
3449 | /* See if a byte swap (in HImode) or a word swap (in SImode) can | |
3450 | boost up the rotation. */ | |
3451 | if ((mode == HImode && TARGET_H8300 && amount >= 5) | |
3452 | || (mode == HImode && TARGET_H8300H && amount >= 6) | |
3453 | || (mode == HImode && TARGET_H8300S && amount == 8) | |
3454 | || (mode == SImode && TARGET_H8300H && amount >= 10) | |
3455 | || (mode == SImode && TARGET_H8300S && amount >= 13)) | |
3456 | { | |
3457 | /* Adjust AMOUNT and flip the direction. */ | |
3458 | amount = GET_MODE_BITSIZE (mode) / 2 - amount; | |
3459 | states += 6; | |
3460 | } | |
3461 | ||
3462 | /* We use 2-bit rotatations on the H8/S. */ | |
3463 | if (TARGET_H8300S) | |
3464 | amount = amount / 2 + amount % 2; | |
3465 | ||
3466 | /* The H8/300 uses three insns to rotate one bit, taking 6 | |
3467 | states. */ | |
3468 | states += amount * ((TARGET_H8300 && mode == HImode) ? 6 : 2); | |
3469 | ||
3470 | return -(20 - states); | |
3471 | } | |
3472 | ||
e6219736 JL |
3473 | return 0; |
3474 | } | |
7c262518 RH |
3475 | |
3476 | static void | |
715bdd29 | 3477 | h8300_asm_named_section (name, flags) |
7c262518 RH |
3478 | const char *name; |
3479 | unsigned int flags ATTRIBUTE_UNUSED; | |
7c262518 RH |
3480 | { |
3481 | /* ??? Perhaps we should be using default_coff_asm_named_section. */ | |
3482 | fprintf (asm_out_file, "\t.section %s\n", name); | |
3483 | } |