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toolchain-gcc-arm-embedded/lib/gcc/arm-none-eabi/10.2.1/plugin/include/config/arm/aout.h

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  1. /* Definitions of target machine for GNU compiler, for ARM with a.out

  2.    Copyright (C) 1995-2020 Free Software Foundation, Inc.

  3.    Contributed by Richard Earnshaw (rearnsha@armltd.co.uk).

  4.    

  5.    This file is part of GCC.

  6. 

  7.    GCC is free software; you can redistribute it and/or modify it

  8.    under the terms of the GNU General Public License as published

  9.    by the Free Software Foundation; either version 3, or (at your

  10.    option) any later version.

  11. 

  12.    GCC is distributed in the hope that it will be useful, but WITHOUT

  13.    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

  14.    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public

  15.    License for more details.

  16. 

  17.    Under Section 7 of GPL version 3, you are granted additional

  18.    permissions described in the GCC Runtime Library Exception, version

  19.    3.1, as published by the Free Software Foundation.

  20. 

  21.    You should have received a copy of the GNU General Public License and

  22.    a copy of the GCC Runtime Library Exception along with this program;

  23.    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

  24.    <http://www.gnu.org/licenses/>.  */

  25. 

  26. #ifndef ASM_APP_ON

  27. #define ASM_APP_ON  		""

  28. #endif

  29. #ifndef ASM_APP_OFF

  30. #define ASM_APP_OFF  		""

  31. #endif

  32. 

  33. /* Switch to the text or data segment.  */

  34. #define TEXT_SECTION_ASM_OP  	"\t.text"

  35. #define DATA_SECTION_ASM_OP  	"\t.data"

  36. #define BSS_SECTION_ASM_OP   	"\t.bss"

  37. 

  38. /* Note: If USER_LABEL_PREFIX or LOCAL_LABEL_PREFIX are changed,

  39.    make sure that this change is reflected in the function

  40.    coff_arm_is_local_label_name() in bfd/coff-arm.c.  */

  41. #ifndef REGISTER_PREFIX

  42. #define REGISTER_PREFIX 	""

  43. #endif

  44. 

  45. #ifndef USER_LABEL_PREFIX

  46. #define USER_LABEL_PREFIX 	"_"

  47. #endif

  48. 

  49. #ifndef LOCAL_LABEL_PREFIX

  50. #define LOCAL_LABEL_PREFIX 	""

  51. #endif

  52. 

  53. /* The assembler's names for the registers.  Note that the ?xx registers are

  54.    there so that VFPv3/NEON registers D16-D31 have the same spacing as D0-D15

  55.    (each of which is overlaid on two S registers), although there are no

  56.    actual single-precision registers which correspond to D16-D31.  New register

  57.    p0 is added which is used for MVE predicated cases.  */

  58. 

  59. #ifndef REGISTER_NAMES

  60. #define REGISTER_NAMES						\

  61. {								\

  62.   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",		\

  63.   "r8", "r9", "r10", "fp", "ip", "sp", "lr", "pc",		\

  64.   "s0",  "s1",  "s2",  "s3",  "s4",  "s5",  "s6",  "s7",	\

  65.   "s8",  "s9",  "s10", "s11", "s12", "s13", "s14", "s15",	\

  66.   "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23",	\

  67.   "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31",	\

  68.   "d16", "?16", "d17", "?17", "d18", "?18", "d19", "?19",	\

  69.   "d20", "?20", "d21", "?21", "d22", "?22", "d23", "?23",	\

  70.   "d24", "?24", "d25", "?25", "d26", "?26", "d27", "?27",	\

  71.   "d28", "?28", "d29", "?29", "d30", "?30", "d31", "?31",	\

  72.   "wr0",   "wr1",   "wr2",   "wr3",				\

  73.   "wr4",   "wr5",   "wr6",   "wr7",				\

  74.   "wr8",   "wr9",   "wr10",  "wr11",				\

  75.   "wr12",  "wr13",  "wr14",  "wr15",				\

  76.   "wcgr0", "wcgr1", "wcgr2", "wcgr3",				\

  77.   "cc", "vfpcc", "sfp", "afp", "apsrq", "apsrge", "p0"		\

  78. }

  79. #endif

  80. 

  81. #ifndef ADDITIONAL_REGISTER_NAMES

  82. #define ADDITIONAL_REGISTER_NAMES		\

  83. {						\

  84.   {"a1", 0},					\

  85.   {"a2", 1},					\

  86.   {"a3", 2},					\

  87.   {"a4", 3},					\

  88.   {"v1", 4},					\

  89.   {"v2", 5},					\

  90.   {"v3", 6},					\

  91.   {"v4", 7},					\

  92.   {"v5", 8},					\

  93.   {"v6", 9},					\

  94.   {"rfp", 9}, /* Historical.  */		\

  95.   {"sb", 9}, /* Historical.  */			\

  96.   {"v7", 10},					\

  97.   {"sl", 10},	/* Historical.  */		\

  98.   {"r11", 11},	/* fp */			\

  99.   {"r12", 12},	/* ip */			\

  100.   {"r13", 13},	/* sp */			\

  101.   {"r14", 14},	/* lr */			\

  102.   {"r15", 15}	/* pc */			\

  103. }

  104. #endif

  105. 

  106. #ifndef OVERLAPPING_REGISTER_NAMES

  107. #define OVERLAPPING_REGISTER_NAMES		\

  108. {						\

  109.   {"d0",  FIRST_VFP_REGNUM + 0,  2},		\

  110.   {"d1",  FIRST_VFP_REGNUM + 2,  2},		\

  111.   {"d2",  FIRST_VFP_REGNUM + 4,  2},		\

  112.   {"d3",  FIRST_VFP_REGNUM + 6,  2},		\

  113.   {"d4",  FIRST_VFP_REGNUM + 8,  2},		\

  114.   {"d5",  FIRST_VFP_REGNUM + 10, 2},		\

  115.   {"d6",  FIRST_VFP_REGNUM + 12, 2},		\

  116.   {"d7",  FIRST_VFP_REGNUM + 14, 2},		\

  117.   {"d8",  FIRST_VFP_REGNUM + 16, 2},		\

  118.   {"d9",  FIRST_VFP_REGNUM + 18, 2},		\

  119.   {"d10", FIRST_VFP_REGNUM + 20, 2},		\

  120.   {"d11", FIRST_VFP_REGNUM + 22, 2},		\

  121.   {"d12", FIRST_VFP_REGNUM + 24, 2},		\

  122.   {"d13", FIRST_VFP_REGNUM + 26, 2},		\

  123.   {"d14", FIRST_VFP_REGNUM + 28, 2},		\

  124.   {"d15", FIRST_VFP_REGNUM + 30, 2},		\

  125.   {"q0",  FIRST_VFP_REGNUM + 0,  4},		\

  126.   {"q1",  FIRST_VFP_REGNUM + 4,  4},		\

  127.   {"q2",  FIRST_VFP_REGNUM + 8,  4},		\

  128.   {"q3",  FIRST_VFP_REGNUM + 12, 4},		\

  129.   {"q4",  FIRST_VFP_REGNUM + 16, 4},		\

  130.   {"q5",  FIRST_VFP_REGNUM + 20, 4},		\

  131.   {"q6",  FIRST_VFP_REGNUM + 24, 4},		\

  132.   {"q7",  FIRST_VFP_REGNUM + 28, 4},		\

  133.   {"q8",  FIRST_VFP_REGNUM + 32, 4},		\

  134.   {"q9",  FIRST_VFP_REGNUM + 36, 4},		\

  135.   {"q10", FIRST_VFP_REGNUM + 40, 4},		\

  136.   {"q11", FIRST_VFP_REGNUM + 44, 4},		\

  137.   {"q12", FIRST_VFP_REGNUM + 48, 4},		\

  138.   {"q13", FIRST_VFP_REGNUM + 52, 4},		\

  139.   {"q14", FIRST_VFP_REGNUM + 56, 4},		\

  140.   {"q15", FIRST_VFP_REGNUM + 60, 4}		\

  141. }

  142. #endif

  143. 

  144. #ifndef NO_DOLLAR_IN_LABEL

  145. #define NO_DOLLAR_IN_LABEL 1

  146. #endif

  147. 

  148. /* Generate DBX debugging information.  riscix.h will undefine this because

  149.    the native assembler does not support stabs.  */

  150. #define DBX_DEBUGGING_INFO 1

  151. 

  152. /* Acorn dbx moans about continuation chars, so don't use any.  */

  153. #ifndef DBX_CONTIN_LENGTH

  154. #define DBX_CONTIN_LENGTH  0

  155. #endif

  156. 

  157. /* Output a function label definition.  */

  158. #ifndef ASM_DECLARE_FUNCTION_NAME

  159. #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)	\

  160.   do							\

  161.     {							\

  162.       ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL);   \

  163.       ASM_OUTPUT_LABEL (STREAM, NAME);			\

  164.     }							\

  165.   while (0)

  166. #endif

  167. 

  168. /* Globalizing directive for a label.  */

  169. #define GLOBAL_ASM_OP "\t.global\t"

  170. 

  171. /* Make an internal label into a string.  */

  172. #ifndef ASM_GENERATE_INTERNAL_LABEL

  173. #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)  \

  174.   sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))

  175. #endif

  176.      

  177. /* Output an element of a dispatch table.  */

  178. #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)			\

  179.   do								\

  180.     {								\

  181.       gcc_assert (!TARGET_THUMB2);				\

  182.       asm_fprintf (STREAM, "\t.word\t%LL%d\n", VALUE);		\

  183.     }								\

  184.   while (0)

  185. 	  

  186. 

  187. /* Thumb-2 always uses addr_diff_elf so that the Table Branch instructions

  188.    can be used.  For non-pic code where the offsets do not suitable for

  189.    TBB/TBH the elements are output as absolute labels.  */

  190. #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL)		\

  191.   do									\

  192.     {									\

  193.       if (TARGET_ARM)							\

  194. 	asm_fprintf (STREAM, "\tb\t%LL%d\n", VALUE);			\

  195.       else if (TARGET_THUMB1)						\

  196. 	{								\

  197. 	  if (flag_pic || optimize_size)				\

  198. 	    {								\

  199. 	      switch (GET_MODE(body))					\

  200. 		{							\

  201. 		case E_QImode:						\

  202. 		  asm_fprintf (STREAM, "\t.byte\t(%LL%d-%LL%d)/2\n",	\

  203. 			       VALUE, REL);				\

  204. 		  break;						\

  205. 		case E_HImode: /* TBH */					\

  206. 		  asm_fprintf (STREAM, "\t.2byte\t(%LL%d-%LL%d)/2\n",	\

  207. 			       VALUE, REL);				\

  208. 		  break;						\

  209. 		case E_SImode:						\

  210. 		  asm_fprintf (STREAM, "\t.word\t%LL%d-%LL%d\n",	\

  211. 			       VALUE, REL);				\

  212. 		  break;						\

  213. 		default:						\

  214. 		  gcc_unreachable();					\

  215. 		}							\

  216. 	    }								\

  217. 	  else								\

  218. 	    asm_fprintf (STREAM, "\t.word\t%LL%d+1\n", VALUE);		\

  219. 	}								\

  220.       else /* Thumb-2 */						\

  221. 	{								\

  222. 	  switch (GET_MODE(body))					\

  223. 	    {								\

  224. 	    case E_QImode: /* TBB */					\

  225. 	      asm_fprintf (STREAM, "\t.byte\t(%LL%d-%LL%d)/2\n",	\

  226. 			   VALUE, REL);					\

  227. 	      break;							\

  228. 	    case E_HImode: /* TBH */					\

  229. 	      asm_fprintf (STREAM, "\t.2byte\t(%LL%d-%LL%d)/2\n",	\

  230. 			   VALUE, REL);					\

  231. 	      break;							\

  232. 	    case E_SImode:						\

  233. 	      if (flag_pic)						\

  234. 		asm_fprintf (STREAM, "\t.word\t%LL%d+1-%LL%d\n", VALUE, REL); \

  235. 	      else							\

  236. 		asm_fprintf (STREAM, "\t.word\t%LL%d+1\n", VALUE);	\

  237. 	      break;							\

  238. 	    default:							\

  239. 	      gcc_unreachable();					\

  240. 	    }								\

  241. 	}								\

  242.     }									\

  243.   while (0)

  244. 

  245. 

  246. #undef  ASM_OUTPUT_ASCII

  247. #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN)  \

  248.   output_ascii_pseudo_op (STREAM, (const unsigned char *) (PTR), LEN)

  249. 

  250. /* Output a gap.  In fact we fill it with nulls.  */

  251. #undef  ASM_OUTPUT_SKIP

  252. #define ASM_OUTPUT_SKIP(STREAM, NBYTES) 	\

  253.   fprintf (STREAM, "\t.space\t%d\n", (int) (NBYTES))

  254. 

  255. /* Align output to a power of two.  Horrible /bin/as.  */

  256. #ifndef ASM_OUTPUT_ALIGN  

  257. #define ASM_OUTPUT_ALIGN(STREAM, POWER)			\

  258.   do							\

  259.     {							\

  260.       register int amount = 1 << (POWER);		\

  261. 							\

  262.       if (amount == 2)					\

  263. 	fprintf (STREAM, "\t.even\n");			\

  264.       else if (amount != 1)				\

  265. 	fprintf (STREAM, "\t.align\t%d\n", amount - 4);	\

  266.     }							\

  267.   while (0)

  268. #endif

  269. 

  270. /* Output a common block.  */

  271. #ifndef ASM_OUTPUT_COMMON

  272. #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)	\

  273.   do							\

  274.     {							\

  275.       fprintf (STREAM, "\t.comm\t");			\

  276.       assemble_name (STREAM, NAME);			\

  277.       asm_fprintf (STREAM, ", %d\t%@ %d\n", 		\

  278. 	           (int)(ROUNDED), (int)(SIZE));	\

  279.     }							\

  280.   while (0)

  281. #endif

  282.      

  283. /* Output a local common block.  /bin/as can't do this, so hack a

  284.    `.space' into the bss segment.  Note that this is *bad* practice,

  285.    which is guaranteed NOT to work since it doesn't define STATIC

  286.    COMMON space but merely STATIC BSS space.  */

  287. #ifndef ASM_OUTPUT_ALIGNED_LOCAL

  288. #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)		\

  289.   do									\

  290.     {									\

  291.       switch_to_section (bss_section);					\

  292.       ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));	\

  293.       ASM_OUTPUT_LABEL (STREAM, NAME);					\

  294.       fprintf (STREAM, "\t.space\t%d\n", (int)(SIZE));			\

  295.     }									\

  296.   while (0)

  297. #endif

  298.      

  299. /* Output a zero-initialized block.  */

  300. #ifndef ASM_OUTPUT_ALIGNED_BSS

  301. #define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGN) \

  302.   asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN)

  303. #endif

  304. 

  305. #ifndef ASM_COMMENT_START

  306. #define ASM_COMMENT_START 	"@"

  307. #endif

  308. 

  309. /* This works for GAS and some other assemblers.  */

  310. #define SET_ASM_OP		"\t.set\t"