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comparison gcc/config/msp430/msp430.h @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents 84e7813d76e9
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comparison
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131:84e7813d76e9 145:1830386684a0
1 /* GCC backend definitions for the TI MSP430 Processor 1 /* GCC backend definitions for the TI MSP430 Processor
2 Copyright (C) 2012-2018 Free Software Foundation, Inc. 2 Copyright (C) 2012-2020 Free Software Foundation, Inc.
3 Contributed by Red Hat. 3 Contributed by Red Hat.
4 4
5 This file is part of GCC. 5 This file is part of GCC.
6 6
7 GCC is free software; you can redistribute it and/or modify it 7 GCC is free software; you can redistribute it and/or modify it
24 /* True if the MSP430x extensions are enabled. */ 24 /* True if the MSP430x extensions are enabled. */
25 #ifndef IN_LIBGCC2 25 #ifndef IN_LIBGCC2
26 extern bool msp430x; 26 extern bool msp430x;
27 #endif 27 #endif
28 28
29 #define TARGET_CPU_CPP_BUILTINS() \ 29 #define TARGET_CPU_CPP_BUILTINS() \
30 do \ 30 do \
31 { \ 31 { \
32 builtin_define ("NO_TRAMPOLINES"); \ 32 builtin_define ("NO_TRAMPOLINES"); \
33 builtin_define ("__MSP430__"); \ 33 builtin_define ("__MSP430__"); \
34 builtin_define (msp430_mcu_name ()); \ 34 builtin_define (msp430_mcu_name ()); \
35 if (msp430x) \ 35 if (msp430x) \
36 { \ 36 { \
37 builtin_define ("__MSP430X__"); \ 37 builtin_define ("__MSP430X__"); \
39 if (TARGET_LARGE) \ 39 if (TARGET_LARGE) \
40 builtin_define ("__MSP430X_LARGE__"); \ 40 builtin_define ("__MSP430X_LARGE__"); \
41 } \ 41 } \
42 else \ 42 else \
43 builtin_assert ("cpu=MSP430"); \ 43 builtin_assert ("cpu=MSP430"); \
44 } \ 44 } \
45 while (0) 45 while (0)
46 46
47 /* For the "c" language where exceptions are implicitly disabled, use
48 crt*_no_eh.o unless -fexceptions is passed. For other languages, only use
49 crt*_no_eh.o if -fno-exceptions is explicitly passed. */
47 #undef STARTFILE_SPEC 50 #undef STARTFILE_SPEC
48 #define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:%{minrt:crt0-minrt.o%s}%{!minrt:crt0.o%s}} %{!minrt:crtbegin.o%s}" 51 #define STARTFILE_SPEC "%{pg:gcrt0.o%s}" \
52 "%{!pg:%{minrt:crt0-minrt.o%s}%{!minrt:crt0.o%s}} " \
53 "%{!minrt:%{,c:%{!fexceptions:crtbegin_no_eh.o%s; :crtbegin.o%s}; " \
54 ":%{fno-exceptions:crtbegin_no_eh.o%s; :crtbegin.o%s}}}"
49 55
50 /* -lgcc is included because crtend.o needs __mspabi_func_epilog_1. */ 56 /* -lgcc is included because crtend.o needs __mspabi_func_epilog_1. */
51 #undef ENDFILE_SPEC 57 #undef ENDFILE_SPEC
52 #define ENDFILE_SPEC "%{!minrt:crtend.o%s} %{minrt:crtn-minrt.o%s}%{!minrt:crtn.o%s} -lgcc" 58 #define ENDFILE_SPEC \
59 "%{!minrt:%{,c:%{!fexceptions:crtend_no_eh.o%s; :crtend.o%s}; " \
60 ":%{fno-exceptions:crtend_no_eh.o%s; :crtend.o%s}}} " \
61 "%{minrt:%:if-exists(crtn-minrt.o%s)}%{!minrt:%:if-exists(crtn.o%s)} -lgcc"
53 62
54 #define ASM_SPEC "-mP " /* Enable polymorphic instructions. */ \ 63 #define ASM_SPEC "-mP " /* Enable polymorphic instructions. */ \
55 "%{mcpu=*:-mcpu=%*}%{!mcpu=*:%{mmcu=*:-mmcu=%*}} " /* Pass the CPU type on to the assembler. */ \ 64 "%{mcpu=*:-mcpu=%*} " /* Pass the CPU type on to the assembler. */ \
56 "%{mrelax=-mQ} " /* Pass the relax option on to the assembler. */ \ 65 "%{mrelax=-mQ} " /* Pass the relax option on to the assembler. */ \
57 "%{mlarge:-ml} " /* Tell the assembler if we are building for the LARGE pointer model. */ \ 66 /* Tell the assembler if we are building for the LARGE pointer model. */ \
58 "%{!msim:-md} %{msim:%{mlarge:-md}} " /* Copy data from ROM to RAM if necessary. */ \ 67 "%{mlarge:-ml} " \
59 "%{msilicon-errata=*:-msilicon-errata=%*} " /* Pass on -msilicon-errata. */ \ 68 /* Copy data from ROM to RAM if necessary. */ \
60 "%{msilicon-errata-warn=*:-msilicon-errata-warn=%*} " /* Pass on -msilicon-errata-warn. */ \ 69 "%{!msim:-md} %{msim:%{mlarge:-md}} " \
61 "%{ffunction-sections:-gdwarf-sections} " /* If function sections are being created then create DWARF line number sections as well. */ \ 70 "%{msilicon-errata=*:-msilicon-errata=%*} " \
62 "%{mdata-region=*:-mdata-region=%*} " /* Pass on -mdata-region. */ 71 "%{msilicon-errata-warn=*:-msilicon-errata-warn=%*} " \
72 /* Create DWARF line number sections for -ffunction-sections. */ \
73 "%{ffunction-sections:-gdwarf-sections} " \
74 "%{mdata-region=*:-mdata-region=%*} "
63 75
64 /* Enable linker section garbage collection by default, unless we 76 /* Enable linker section garbage collection by default, unless we
65 are creating a relocatable binary (gc does not work) or debugging 77 are creating a relocatable binary (gc does not work) or debugging
66 is enabled (the GDB testsuite relies upon unused entities not being deleted). */ 78 is enabled (the GDB testsuite relies upon unused entities not being
79 deleted). */
67 #define LINK_SPEC "%{mrelax:--relax} %{mlarge:%{!r:%{!g:--gc-sections}}} " \ 80 #define LINK_SPEC "%{mrelax:--relax} %{mlarge:%{!r:%{!g:--gc-sections}}} " \
68 "%{mcode-region=*:--code-region=%*} %{mdata-region=*:--data-region=%*}" 81 "%{mcode-region=*:--code-region=%:" \
82 "msp430_propagate_region_opt(%* %{muse-lower-region-prefix})} " \
83 "%{mdata-region=*:--data-region=%:" \
84 "msp430_propagate_region_opt(%* %{muse-lower-region-prefix})} " \
85 "%:msp430_get_linker_devices_include_path() " \
86 "%{mtiny-printf:--wrap puts --wrap printf} "
87
88 #define DRIVER_SELF_SPECS \
89 " %{!mlarge:%{mcode-region=*:%{mdata-region=*:%e-mcode-region and " \
90 "-mdata-region require the large memory model (-mlarge)}}}" \
91 " %{!mlarge:%{mcode-region=*:" \
92 "%e-mcode-region requires the large memory model (-mlarge)}}" \
93 " %{!mlarge:%{mdata-region=*:" \
94 "%e-mdata-region requires the large memory model (-mlarge)}}" \
95 " %{mno-warn-devices-csv:%:msp430_set_driver_var(msp430_warn_devices_csv 0)}"\
96 " %{mdevices-csv-loc=*:%:msp430_set_driver_var(msp430_devices_csv_loc %*)}"\
97 " %{I*:%:msp430_check_path_for_devices(%{I*:%*})}" \
98 " %{L*:%:msp430_check_path_for_devices(%{L*:%*})}" \
99 " %{!mcpu=*:%{mmcu=*:%:msp430_select_cpu(%{mmcu=*:%*})}}"
69 100
70 extern const char * msp430_select_hwmult_lib (int, const char **); 101 extern const char * msp430_select_hwmult_lib (int, const char **);
102 extern const char * msp430_select_cpu (int, const char **);
103 extern const char * msp430_set_driver_var (int, const char **);
104 extern const char * msp430_check_path_for_devices (int, const char **);
105 extern const char *msp430_propagate_region_opt (int, const char **);
106 extern const char *msp430_get_linker_devices_include_path (int, const char **);
107
108 /* There must be a trailing comma after the last item, see gcc.c
109 "static_spec_functions". */
71 # define EXTRA_SPEC_FUNCTIONS \ 110 # define EXTRA_SPEC_FUNCTIONS \
72 { "msp430_hwmult_lib", msp430_select_hwmult_lib }, 111 { "msp430_hwmult_lib", msp430_select_hwmult_lib }, \
112 { "msp430_select_cpu", msp430_select_cpu }, \
113 { "msp430_set_driver_var", msp430_set_driver_var }, \
114 { "msp430_check_path_for_devices", msp430_check_path_for_devices }, \
115 { "msp430_propagate_region_opt", msp430_propagate_region_opt }, \
116 { "msp430_get_linker_devices_include_path", \
117 msp430_get_linker_devices_include_path },
73 118
74 /* Specify the libraries to include on the linker command line. 119 /* Specify the libraries to include on the linker command line.
75 120
76 Selecting the hardware multiply library to use is quite complex. 121 Selecting the hardware multiply library to use is quite complex.
77 If the user has specified -mhwmult=FOO then the mapping is quite 122 If the user has specified -mhwmult=FOO then the mapping is quite
87 it to a hardware multiply library. This table (in device-msp430.c) 132 it to a hardware multiply library. This table (in device-msp430.c)
88 must be kept in sync with the same table in msp430.c. */ 133 must be kept in sync with the same table in msp430.c. */
89 #undef LIB_SPEC 134 #undef LIB_SPEC
90 #define LIB_SPEC " \ 135 #define LIB_SPEC " \
91 --start-group \ 136 --start-group \
92 %{mhwmult=auto:%{mmcu=*:%:msp430_hwmult_lib(mcu %{mmcu=*:%*});:%:msp430_hwmult_lib(default)}; \ 137 %{mhwmult=auto:%{mmcu=*:%:msp430_hwmult_lib(mcu %{mmcu=*:%*});\
138 :%:msp430_hwmult_lib(default)}; \
93 mhwmult=*:%:msp430_hwmult_lib(hwmult %{mhwmult=*:%*}); \ 139 mhwmult=*:%:msp430_hwmult_lib(hwmult %{mhwmult=*:%*}); \
94 mmcu=*:%:msp430_hwmult_lib(mcu %{mmcu=*:%*}); \ 140 mmcu=*:%:msp430_hwmult_lib(mcu %{mmcu=*:%*}); \
95 :%:msp430_hwmult_lib(default)} \ 141 :%:msp430_hwmult_lib(default)} \
96 -lc \ 142 -lc \
97 -lgcc \ 143 -lgcc \
157 #define POINTER_SIZE (TARGET_LARGE ? 20 : 16) 203 #define POINTER_SIZE (TARGET_LARGE ? 20 : 16)
158 /* This is just for .eh_frame, to match bfd. */ 204 /* This is just for .eh_frame, to match bfd. */
159 #define PTR_SIZE (TARGET_LARGE ? 4 : 2) 205 #define PTR_SIZE (TARGET_LARGE ? 4 : 2)
160 #define POINTERS_EXTEND_UNSIGNED 1 206 #define POINTERS_EXTEND_UNSIGNED 1
161 207
208 /* TARGET_VTABLE_ENTRY_ALIGN defaults to POINTER_SIZE, which is 20 for
209 TARGET_LARGE. Pointer alignment is always 16 for MSP430, so set explicitly
210 here. */
211 #define TARGET_VTABLE_ENTRY_ALIGN 16
212
162 #define ADDR_SPACE_NEAR 1 213 #define ADDR_SPACE_NEAR 1
163 #define ADDR_SPACE_FAR 2 214 #define ADDR_SPACE_FAR 2
164 215
165 #define REGISTER_TARGET_PRAGMAS() msp430_register_pragmas() 216 #define REGISTER_TARGET_PRAGMAS() msp430_register_pragmas()
166 217
178 #endif 229 #endif
179 230
180 /* Layout of Source Language Data Types */ 231 /* Layout of Source Language Data Types */
181 232
182 #undef SIZE_TYPE 233 #undef SIZE_TYPE
183 #define SIZE_TYPE (TARGET_LARGE ? "__int20 unsigned" : "unsigned int") 234 #define SIZE_TYPE (TARGET_LARGE \
235 ? "__int20__ unsigned" \
236 : "unsigned int")
184 #undef PTRDIFF_TYPE 237 #undef PTRDIFF_TYPE
185 #define PTRDIFF_TYPE (TARGET_LARGE ? "__int20" : "int") 238 #define PTRDIFF_TYPE (TARGET_LARGE ? "__int20__" : "int")
186 #undef WCHAR_TYPE 239 #undef WCHAR_TYPE
187 #define WCHAR_TYPE "long int" 240 #define WCHAR_TYPE "long int"
188 #undef WCHAR_TYPE_SIZE 241 #undef WCHAR_TYPE_SIZE
189 #define WCHAR_TYPE_SIZE BITS_PER_WORD 242 #define WCHAR_TYPE_SIZE BITS_PER_WORD
190 #define FUNCTION_MODE HImode 243 #define FUNCTION_MODE HImode
213 #define REGISTER_NAMES \ 266 #define REGISTER_NAMES \
214 { \ 267 { \
215 "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", \ 268 "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", \
216 "R8", "R9", "R10", "R11", "R12", "R13", "R14", "R15", \ 269 "R8", "R9", "R10", "R11", "R12", "R13", "R14", "R15", \
217 "argptr" \ 270 "argptr" \
271 }
272
273 /* Allow lowercase "r" to be used in register names instead of upper
274 case "R". */
275 #define ADDITIONAL_REGISTER_NAMES \
276 { \
277 { "r0", 0 }, \
278 { "r1", 1 }, \
279 { "r2", 2 }, \
280 { "r3", 3 }, \
281 { "r4", 4 }, \
282 { "r5", 5 }, \
283 { "r6", 6 }, \
284 { "r7", 7 }, \
285 { "r8", 8 }, \
286 { "r9", 9 }, \
287 { "r10", 10 }, \
288 { "r11", 11 }, \
289 { "r12", 12 }, \
290 { "r13", 13 }, \
291 { "r14", 14 }, \
292 { "r15", 15 } \
218 } 293 }
219 294
220 enum reg_class 295 enum reg_class
221 { 296 {
222 NO_REGS, 297 NO_REGS,
239 #define REG_CLASS_CONTENTS \ 314 #define REG_CLASS_CONTENTS \
240 { \ 315 { \
241 0x00000000, \ 316 0x00000000, \
242 0x00001000, \ 317 0x00001000, \
243 0x00002000, \ 318 0x00002000, \
244 0x0000fff2, \ 319 0x0000fff3, \
245 0x0001ffff \ 320 0x0001ffff \
246 } 321 }
247 322
323 /* GENERAL_REGS just means that the "g" and "r" constraints can use these
324 registers.
325 Even though R0 (PC) and R1 (SP) are not "general" in that they can be used
326 for any purpose by the register allocator, they are general in that they can
327 be used by any instruction in any addressing mode. */
248 #define GENERAL_REGS GEN_REGS 328 #define GENERAL_REGS GEN_REGS
249 #define BASE_REG_CLASS GEN_REGS 329 #define BASE_REG_CLASS GEN_REGS
250 #define INDEX_REG_CLASS GEN_REGS 330 #define INDEX_REG_CLASS GEN_REGS
251 #define N_REG_CLASSES (int) LIM_REG_CLASSES 331 #define N_REG_CLASSES (int) LIM_REG_CLASSES
252 332
253 #define PC_REGNUM 0 333 #define PC_REGNUM 0
254 #define STACK_POINTER_REGNUM 1 334 #define STACK_POINTER_REGNUM 1
255 #define CC_REGNUM 2 335 #define CC_REGNUM 2
256 #define FRAME_POINTER_REGNUM 4 /* not usually used, call preserved */ 336 #define FRAME_POINTER_REGNUM 4 /* not usually used, call preserved */
257 #define ARG_POINTER_REGNUM 16 337 #define ARG_POINTER_REGNUM 16
258 #define STATIC_CHAIN_REGNUM 5 /* FIXME */ 338 #define STATIC_CHAIN_REGNUM 5 /* FIXME */
259 339
260 #define FIRST_PSEUDO_REGISTER 17 340 #define FIRST_PSEUDO_REGISTER 17
261 341
262 #define REGNO_REG_CLASS(REGNO) ((REGNO) < 17 \ 342 #define REGNO_REG_CLASS(REGNO) (REGNO != 2 \
343 && REGNO != 3 \
344 && REGNO < 17 \
263 ? GEN_REGS : NO_REGS) 345 ? GEN_REGS : NO_REGS)
264 346
265 #define TRAMPOLINE_SIZE 4 /* FIXME */ 347 #define TRAMPOLINE_SIZE 4 /* FIXME */
266 #define TRAMPOLINE_ALIGNMENT 16 /* FIXME */ 348 #define TRAMPOLINE_ALIGNMENT 16 /* FIXME */
267 349
336 418
337 #define EH_RETURN_DATA_REGNO(N) \ 419 #define EH_RETURN_DATA_REGNO(N) \
338 (((N) < 3) ? ((N) + 12) : INVALID_REGNUM) 420 (((N) < 3) ? ((N) + 12) : INVALID_REGNUM)
339 421
340 #define EH_RETURN_HANDLER_RTX \ 422 #define EH_RETURN_HANDLER_RTX \
341 gen_rtx_MEM(Pmode, gen_rtx_PLUS (Pmode, gen_rtx_REG(Pmode, SP_REGNO), gen_rtx_REG (Pmode, 15))) 423 gen_rtx_MEM (Pmode, gen_rtx_PLUS (Pmode, gen_rtx_REG (Pmode, SP_REGNO), \
424 gen_rtx_REG (Pmode, 15)))
342 425
343 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, 15) 426 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, 15)
344 427
345 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_udata4 428 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_udata4
346 429
380 463
381 #define ASM_OUTPUT_ALIGN(STREAM, LOG) \ 464 #define ASM_OUTPUT_ALIGN(STREAM, LOG) \
382 do \ 465 do \
383 { \ 466 { \
384 if ((LOG) == 0) \ 467 if ((LOG) == 0) \
385 break; \ 468 break; \
386 fprintf (STREAM, "\t.balign %d\n", 1 << (LOG)); \ 469 fprintf (STREAM, "\t.balign %d\n", 1 << (LOG)); \
387 } \ 470 } \
388 while (0) 471 while (0)
389 472
390 #define JUMP_TABLES_IN_TEXT_SECTION 1 473 #define JUMP_TABLES_IN_TEXT_SECTION 1
400 #define DWARF2_ASM_LINE_DEBUG_INFO 1 483 #define DWARF2_ASM_LINE_DEBUG_INFO 1
401 484
402 /* Prevent reload (and others) from choosing HImode stack slots 485 /* Prevent reload (and others) from choosing HImode stack slots
403 when spilling hard registers when they may contain PSImode values. */ 486 when spilling hard registers when they may contain PSImode values. */
404 #define HARD_REGNO_CALLER_SAVE_MODE(REGNO,NREGS,MODE) \ 487 #define HARD_REGNO_CALLER_SAVE_MODE(REGNO,NREGS,MODE) \
405 ((TARGET_LARGE && ((NREGS) <= 2)) ? PSImode : choose_hard_reg_mode ((REGNO), (NREGS), false)) 488 ((TARGET_LARGE && ((NREGS) <= 2)) ? PSImode \
489 : choose_hard_reg_mode ((REGNO), (NREGS), NULL))
406 490
407 #define ACCUMULATE_OUTGOING_ARGS 1 491 #define ACCUMULATE_OUTGOING_ARGS 1
492
493 #define HAVE_POST_INCREMENT 1
494
495 /* This (unsurprisingly) improves code size in the vast majority of cases, we
496 want to prevent any instructions using a "store post increment" from being
497 generated. These will have to later be reloaded since msp430 does not
498 support post inc for the destination operand. */
499 #define USE_STORE_POST_INCREMENT(MODE) 0
500
501 /* Many other targets set USE_LOAD_POST_INCREMENT to 0. For msp430-elf
502 the benefit of disabling it is not clear. When looking at code size, on
503 average, there is a slight advantage to leaving it enabled. */
408 504
409 #undef ASM_DECLARE_FUNCTION_NAME 505 #undef ASM_DECLARE_FUNCTION_NAME
410 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 506 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
411 msp430_start_function ((FILE), (NAME), (DECL)) 507 msp430_start_function ((FILE), (NAME), (DECL))
412 508
413 #define TARGET_HAS_NO_HW_DIVIDE (! TARGET_HWMULT) 509 #define TARGET_HAS_NO_HW_DIVIDE (! TARGET_HWMULT)
414 510
511 void msp430_register_pre_includes (const char *sysroot ATTRIBUTE_UNUSED,
512 const char *iprefix ATTRIBUTE_UNUSED,
513 int stdinc ATTRIBUTE_UNUSED);
514 #undef TARGET_EXTRA_PRE_INCLUDES
515 #define TARGET_EXTRA_PRE_INCLUDES msp430_register_pre_includes
516
415 #undef USE_SELECT_SECTION_FOR_FUNCTIONS 517 #undef USE_SELECT_SECTION_FOR_FUNCTIONS
416 #define USE_SELECT_SECTION_FOR_FUNCTIONS 1 518 #define USE_SELECT_SECTION_FOR_FUNCTIONS 1
417 519
418 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ 520 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
419 msp430_output_aligned_decl_common ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) 521 msp430_output_aligned_decl_common ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
522
523 #define SYMBOL_FLAG_LOW_MEM (SYMBOL_FLAG_MACH_DEP << 0)