/* Definitions of target machine for GNU compiler, for ARM with a.out
- Copyright (C) 1995, 1996 Free Software Foundation, Inc.
- Contributed by Richard Earnshaw (rearnsha@armltd.co.uk)
+ Copyright (C) 1995-2021 Free Software Foundation, Inc.
+ Contributed by Richard Earnshaw (rearnsha@armltd.co.uk).
-This file is part of GNU CC.
+ This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+ GCC is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ GCC is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
-#ifndef ARM_OS_NAME
-#define ARM_OS_NAME "(generic)"
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef ASM_APP_ON
+#define ASM_APP_ON ""
+#endif
+#ifndef ASM_APP_OFF
+#define ASM_APP_OFF ""
#endif
-/* The text to go at the start of the assembler file */
-#define ASM_FILE_START(STREAM) \
-{ \
- fprintf (STREAM,"%srfp\t.req\t%sr9\n", REGISTER_PREFIX, REGISTER_PREFIX); \
- fprintf (STREAM,"%ssl\t.req\t%sr10\n", REGISTER_PREFIX, REGISTER_PREFIX); \
- fprintf (STREAM,"%sfp\t.req\t%sr11\n", REGISTER_PREFIX, REGISTER_PREFIX); \
- fprintf (STREAM,"%sip\t.req\t%sr12\n", REGISTER_PREFIX, REGISTER_PREFIX); \
- fprintf (STREAM,"%ssp\t.req\t%sr13\n", REGISTER_PREFIX, REGISTER_PREFIX); \
- fprintf (STREAM,"%slr\t.req\t%sr14\n", REGISTER_PREFIX, REGISTER_PREFIX); \
- fprintf (STREAM,"%spc\t.req\t%sr15\n", REGISTER_PREFIX, REGISTER_PREFIX); \
-}
+/* Switch to the text or data segment. */
+#define TEXT_SECTION_ASM_OP "\t.text"
+#define DATA_SECTION_ASM_OP "\t.data"
+#define BSS_SECTION_ASM_OP "\t.bss"
+
+/* Note: If USER_LABEL_PREFIX or LOCAL_LABEL_PREFIX are changed,
+ make sure that this change is reflected in the function
+ coff_arm_is_local_label_name() in bfd/coff-arm.c. */
+#ifndef REGISTER_PREFIX
+#define REGISTER_PREFIX ""
+#endif
-#define ASM_APP_ON ""
-#define ASM_APP_OFF ""
+#ifndef USER_LABEL_PREFIX
+#define USER_LABEL_PREFIX "_"
+#endif
-/* Switch to the text or data segment. */
-#define TEXT_SECTION_ASM_OP ".text"
-#define DATA_SECTION_ASM_OP ".data"
-#define BSS_SECTION_ASM_OP ".bss"
+#ifndef LOCAL_LABEL_PREFIX
+#define LOCAL_LABEL_PREFIX ""
+#endif
-#define REGISTER_PREFIX ""
-#define USER_LABEL_PREFIX "_"
-#define LOCAL_LABEL_PREFIX ""
+/* The assembler's names for the registers. Note that the ?xx registers are
+ there so that VFPv3/NEON registers D16-D31 have the same spacing as D0-D15
+ (each of which is overlaid on two S registers), although there are no
+ actual single-precision registers which correspond to D16-D31. New register
+ p0 is added which is used for MVE predicated cases. */
-/* The assembler's names for the registers. */
#ifndef REGISTER_NAMES
-#define REGISTER_NAMES \
-{ \
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
- "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc", \
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
- "cc", "sfp", "afp" \
+#define REGISTER_NAMES \
+{ \
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
+ "r8", "r9", "r10", "fp", "ip", "sp", "lr", "pc", \
+ "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \
+ "s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15", \
+ "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23", \
+ "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31", \
+ "d16", "?16", "d17", "?17", "d18", "?18", "d19", "?19", \
+ "d20", "?20", "d21", "?21", "d22", "?22", "d23", "?23", \
+ "d24", "?24", "d25", "?25", "d26", "?26", "d27", "?27", \
+ "d28", "?28", "d29", "?29", "d30", "?30", "d31", "?31", \
+ "wr0", "wr1", "wr2", "wr3", \
+ "wr4", "wr5", "wr6", "wr7", \
+ "wr8", "wr9", "wr10", "wr11", \
+ "wr12", "wr13", "wr14", "wr15", \
+ "wcgr0", "wcgr1", "wcgr2", "wcgr3", \
+ "cc", "vfpcc", "sfp", "afp", "apsrq", "apsrge", "p0" \
}
#endif
{"v4", 7}, \
{"v5", 8}, \
{"v6", 9}, \
- {"rfp", 9}, /* Gcc used to call it this */ \
- {"sb", 9}, \
+ {"rfp", 9}, /* Historical. */ \
+ {"sb", 9}, /* Historical. */ \
{"v7", 10}, \
- {"r10", 10}, /* sl */ \
+ {"sl", 10}, /* Historical. */ \
{"r11", 11}, /* fp */ \
{"r12", 12}, /* ip */ \
{"r13", 13}, /* sp */ \
}
#endif
-/* Arm Assembler barfs on dollars */
-#define DOLLARS_IN_IDENTIFIERS 0
-
-#define NO_DOLLAR_IN_LABEL
+#ifndef OVERLAPPING_REGISTER_NAMES
+#define OVERLAPPING_REGISTER_NAMES \
+{ \
+ {"d0", FIRST_VFP_REGNUM + 0, 2}, \
+ {"d1", FIRST_VFP_REGNUM + 2, 2}, \
+ {"d2", FIRST_VFP_REGNUM + 4, 2}, \
+ {"d3", FIRST_VFP_REGNUM + 6, 2}, \
+ {"d4", FIRST_VFP_REGNUM + 8, 2}, \
+ {"d5", FIRST_VFP_REGNUM + 10, 2}, \
+ {"d6", FIRST_VFP_REGNUM + 12, 2}, \
+ {"d7", FIRST_VFP_REGNUM + 14, 2}, \
+ {"d8", FIRST_VFP_REGNUM + 16, 2}, \
+ {"d9", FIRST_VFP_REGNUM + 18, 2}, \
+ {"d10", FIRST_VFP_REGNUM + 20, 2}, \
+ {"d11", FIRST_VFP_REGNUM + 22, 2}, \
+ {"d12", FIRST_VFP_REGNUM + 24, 2}, \
+ {"d13", FIRST_VFP_REGNUM + 26, 2}, \
+ {"d14", FIRST_VFP_REGNUM + 28, 2}, \
+ {"d15", FIRST_VFP_REGNUM + 30, 2}, \
+ {"q0", FIRST_VFP_REGNUM + 0, 4}, \
+ {"q1", FIRST_VFP_REGNUM + 4, 4}, \
+ {"q2", FIRST_VFP_REGNUM + 8, 4}, \
+ {"q3", FIRST_VFP_REGNUM + 12, 4}, \
+ {"q4", FIRST_VFP_REGNUM + 16, 4}, \
+ {"q5", FIRST_VFP_REGNUM + 20, 4}, \
+ {"q6", FIRST_VFP_REGNUM + 24, 4}, \
+ {"q7", FIRST_VFP_REGNUM + 28, 4}, \
+ {"q8", FIRST_VFP_REGNUM + 32, 4}, \
+ {"q9", FIRST_VFP_REGNUM + 36, 4}, \
+ {"q10", FIRST_VFP_REGNUM + 40, 4}, \
+ {"q11", FIRST_VFP_REGNUM + 44, 4}, \
+ {"q12", FIRST_VFP_REGNUM + 48, 4}, \
+ {"q13", FIRST_VFP_REGNUM + 52, 4}, \
+ {"q14", FIRST_VFP_REGNUM + 56, 4}, \
+ {"q15", FIRST_VFP_REGNUM + 60, 4} \
+}
+#endif
-/* DBX register number for a given compiler register number */
-#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
+#ifndef NO_DOLLAR_IN_LABEL
+#define NO_DOLLAR_IN_LABEL 1
+#endif
/* Generate DBX debugging information. riscix.h will undefine this because
- the native assembler does not support stabs. */
-#define DBX_DEBUGGING_INFO 1
+ the native assembler does not support stabs. */
+#define DBX_DEBUGGING_INFO 1
/* Acorn dbx moans about continuation chars, so don't use any. */
#ifndef DBX_CONTIN_LENGTH
#define DBX_CONTIN_LENGTH 0
#endif
-/* Output a source filename for the debugger. RISCiX dbx insists that the
- ``desc'' field is set to compiler version number >= 315 (sic). */
-#define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM,NAME) \
-do { \
- fprintf (STREAM, ".stabs \"%s\",%d,0,315,%s\n", (NAME), N_SO, \
- <ext_label_name[1]); \
- text_section (); \
- ASM_OUTPUT_INTERNAL_LABEL (STREAM, "Ltext", 0); \
-} while (0)
-
/* Output a function label definition. */
-#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \
- ASM_OUTPUT_LABEL(STREAM, NAME)
-
-#define ARM_OUTPUT_LABEL(STREAM,NAME) \
-do { \
- assemble_name (STREAM,NAME); \
- fputs (":\n", STREAM); \
-} while (0)
-
-/* Output a globalising directive for a label. */
-#define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
- (fprintf (STREAM, "\t.global\t"), \
- assemble_name (STREAM, NAME), \
- fputc ('\n',STREAM)) \
+#ifndef ASM_DECLARE_FUNCTION_NAME
+#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
+ do \
+ { \
+ ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL); \
+ ASM_OUTPUT_LABEL (STREAM, NAME); \
+ } \
+ while (0)
+#endif
-/* Output a reference to a label. */
-#define ASM_OUTPUT_LABELREF(STREAM,NAME) \
- fprintf (STREAM, "%s%s", USER_LABEL_PREFIX, NAME)
+/* Globalizing directive for a label. */
+#define GLOBAL_ASM_OP "\t.global\t"
/* Make an internal label into a string. */
+#ifndef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
- sprintf (STRING, "*%s%s%d", LOCAL_LABEL_PREFIX, PREFIX, NUM)
-
-/* Nothing special is done about jump tables */
-/* #define ASM_OUTPUT_CASE_LABEL(STREAM,PREFIX,NUM,TABLE) */
-/* #define ASM_OUTPUT_CASE_END(STREAM,NUM,TABLE) */
-
-/* Construct a private name. */
-#define ASM_FORMAT_PRIVATE_NAME(OUTVAR,NAME,NUMBER) \
- ((OUTVAR) = (char *) alloca (strlen (NAME) + 10), \
- sprintf ((OUTVAR), "%s.%d", (NAME), (NUMBER)))
-
+ sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
+#endif
+
/* Output an element of a dispatch table. */
-#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE) \
- fprintf (STREAM, "\t.word\t%sL%d\n", LOCAL_LABEL_PREFIX, VALUE)
-
-#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,VALUE,REL) \
- fprintf (STREAM, "\tb\t%sL%d\n", LOCAL_LABEL_PREFIX, (VALUE))
-
-/* Output various types of constants. For real numbers we output hex, with
- a comment containing the "human" value, this allows us to pass NaN's which
- the riscix assembler doesn't understand (it also makes cross-assembling
- less likely to fail). */
-
-#define ASM_OUTPUT_LONG_DOUBLE(STREAM,VALUE) \
-do { char dstr[30]; \
- long l[3]; \
- arm_increase_location (12); \
- REAL_VALUE_TO_TARGET_LONG_DOUBLE (VALUE, l); \
- REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr); \
- fprintf (STREAM, "\t.long 0x%lx,0x%lx,0x%lx\t%s long double %s\n", \
- l[0], l[1], l[2], ASM_COMMENT_START, dstr); \
- } while (0)
-
-
-#define ASM_OUTPUT_DOUBLE(STREAM, VALUE) \
-do { char dstr[30]; \
- long l[2]; \
- arm_increase_location (8); \
- REAL_VALUE_TO_TARGET_DOUBLE (VALUE, l); \
- REAL_VALUE_TO_DECIMAL (VALUE, "%.14g", dstr); \
- fprintf (STREAM, "\t.long 0x%lx, 0x%lx\t%s double %s\n", l[0], \
- l[1], ASM_COMMENT_START, dstr); \
- } while (0)
-
-#define ASM_OUTPUT_FLOAT(STREAM, VALUE) \
-do { char dstr[30]; \
- long l; \
- arm_increase_location (4); \
- REAL_VALUE_TO_TARGET_SINGLE (VALUE, l); \
- REAL_VALUE_TO_DECIMAL (VALUE, "%.7g", dstr); \
- fprintf (STREAM, "\t.word 0x%lx\t%s float %s\n", l, \
- ASM_COMMENT_START, dstr); \
- } while (0);
-
-#define ASM_OUTPUT_INT(STREAM, EXP) \
- (fprintf (STREAM, "\t.word\t"), \
- output_addr_const (STREAM, (EXP)), \
- arm_increase_location (4), \
- fputc ('\n', STREAM))
-
-#define ASM_OUTPUT_SHORT(STREAM, EXP) \
- (fprintf (STREAM, "\t.short\t"), \
- output_addr_const (STREAM, (EXP)), \
- arm_increase_location (2), \
- fputc ('\n', STREAM))
-
-#define ASM_OUTPUT_CHAR(STREAM, EXP) \
- (fprintf (STREAM, "\t.byte\t"), \
- output_addr_const (STREAM, (EXP)), \
- arm_increase_location (1), \
- fputc ('\n', STREAM))
-
-#define ASM_OUTPUT_BYTE(STREAM, VALUE) \
- (fprintf (STREAM, "\t.byte\t%d\n", VALUE), \
- arm_increase_location (1))
-
+#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
+ do \
+ { \
+ gcc_assert (!TARGET_THUMB2); \
+ asm_fprintf (STREAM, "\t.word\t%LL%d\n", VALUE); \
+ } \
+ while (0)
+
+
+/* Thumb-2 always uses addr_diff_elf so that the Table Branch instructions
+ can be used. For non-pic code where the offsets do not suitable for
+ TBB/TBH the elements are output as absolute labels. */
+#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
+ do \
+ { \
+ if (TARGET_ARM) \
+ asm_fprintf (STREAM, "\tb\t%LL%d\n", VALUE); \
+ else if (TARGET_THUMB1) \
+ { \
+ if (flag_pic || optimize_size) \
+ { \
+ switch (GET_MODE(body)) \
+ { \
+ case E_QImode: \
+ asm_fprintf (STREAM, "\t.byte\t(%LL%d-%LL%d)/2\n", \
+ VALUE, REL); \
+ break; \
+ case E_HImode: /* TBH */ \
+ asm_fprintf (STREAM, "\t.2byte\t(%LL%d-%LL%d)/2\n", \
+ VALUE, REL); \
+ break; \
+ case E_SImode: \
+ asm_fprintf (STREAM, "\t.word\t%LL%d-%LL%d\n", \
+ VALUE, REL); \
+ break; \
+ default: \
+ gcc_unreachable(); \
+ } \
+ } \
+ else \
+ asm_fprintf (STREAM, "\t.word\t%LL%d+1\n", VALUE); \
+ } \
+ else /* Thumb-2 */ \
+ { \
+ switch (GET_MODE(body)) \
+ { \
+ case E_QImode: /* TBB */ \
+ asm_fprintf (STREAM, "\t.byte\t(%LL%d-%LL%d)/2\n", \
+ VALUE, REL); \
+ break; \
+ case E_HImode: /* TBH */ \
+ asm_fprintf (STREAM, "\t.2byte\t(%LL%d-%LL%d)/2\n", \
+ VALUE, REL); \
+ break; \
+ case E_SImode: \
+ if (flag_pic) \
+ asm_fprintf (STREAM, "\t.word\t%LL%d+1-%LL%d\n", VALUE, REL); \
+ else \
+ asm_fprintf (STREAM, "\t.word\t%LL%d+1\n", VALUE); \
+ break; \
+ default: \
+ gcc_unreachable(); \
+ } \
+ } \
+ } \
+ while (0)
+
+
+#undef ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) \
- output_ascii_pseudo_op ((STREAM), (unsigned char *)(PTR), (LEN))
+ output_ascii_pseudo_op (STREAM, (const unsigned char *) (PTR), LEN)
/* Output a gap. In fact we fill it with nulls. */
-#define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
- (arm_increase_location (NBYTES), \
- fprintf (STREAM, "\t.space\t%d\n", NBYTES))
+#undef ASM_OUTPUT_SKIP
+#define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
+ fprintf (STREAM, "\t.space\t%d\n", (int) (NBYTES))
/* Align output to a power of two. Horrible /bin/as. */
-#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
- do \
- { \
- register int amount = 1 << (POWER); \
- extern int arm_text_location; \
- \
- if (amount == 2) \
- fprintf (STREAM, "\t.even\n"); \
- else if (amount != 1) \
- fprintf (STREAM, "\t.align\t%d\n", amount - 4); \
- \
- if (in_text_section ()) \
- arm_text_location = ((arm_text_location + amount - 1) \
- & ~(amount - 1)); \
- } while (0)
-
-/* Output a common block */
-#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
- (fprintf (STREAM, "\t.comm\t"), \
- assemble_name ((STREAM), (NAME)), \
- fprintf(STREAM, ", %d\t%s %d\n", ROUNDED, ASM_COMMENT_START, SIZE))
-
-/* Output a local common block. /bin/as can't do this, so hack a `.space' into
- the bss segment. Note that this is *bad* practice. */
-#define ASM_OUTPUT_ALIGNED_LOCAL(STREAM,NAME,SIZE,ALIGN) \
- output_lcomm_directive (STREAM, NAME, SIZE, ALIGN)
+#ifndef ASM_OUTPUT_ALIGN
+#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
+ do \
+ { \
+ register int amount = 1 << (POWER); \
+ \
+ if (amount == 2) \
+ fprintf (STREAM, "\t.even\n"); \
+ else if (amount != 1) \
+ fprintf (STREAM, "\t.align\t%d\n", amount - 4); \
+ } \
+ while (0)
+#endif
+/* Output a common block. */
+#ifndef ASM_OUTPUT_COMMON
+#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
+ do \
+ { \
+ fprintf (STREAM, "\t.comm\t"); \
+ assemble_name (STREAM, NAME); \
+ asm_fprintf (STREAM, ", %d\t%@ %d\n", \
+ (int)(ROUNDED), (int)(SIZE)); \
+ } \
+ while (0)
+#endif
+
+/* Output a local common block. /bin/as can't do this, so hack a
+ `.space' into the bss segment. Note that this is *bad* practice,
+ which is guaranteed NOT to work since it doesn't define STATIC
+ COMMON space but merely STATIC BSS space. */
+#ifndef ASM_OUTPUT_ALIGNED_LOCAL
+#define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
+ do \
+ { \
+ switch_to_section (bss_section); \
+ ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \
+ ASM_OUTPUT_LABEL (STREAM, NAME); \
+ fprintf (STREAM, "\t.space\t%d\n", (int)(SIZE)); \
+ } \
+ while (0)
+#endif
+
/* Output a zero-initialized block. */
-#define ASM_OUTPUT_ALIGNED_BSS(STREAM,NAME,SIZE,ALIGN) \
- asm_output_aligned_bss(STREAM, NAME, SIZE, ALIGN)
-
-/* Output a source line for the debugger. */
-/* #define ASM_OUTPUT_SOURCE_LINE(STREAM,LINE) */
-
-/* Output a #ident directive. */
-#define ASM_OUTPUT_IDENT(STREAM,STRING) \
- fprintf (STREAM,"- - - ident %s\n",STRING)
-
-/* The assembler's parentheses characters. */
-#define ASM_OPEN_PAREN "("
-#define ASM_CLOSE_PAREN ")"
+#ifndef ASM_OUTPUT_ALIGNED_BSS
+#define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGN) \
+ asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN)
+#endif
#ifndef ASM_COMMENT_START
-#define ASM_COMMENT_START "@"
+#define ASM_COMMENT_START "@"
#endif
-#include "arm/arm.h"
+/* This works for GAS and some other assemblers. */
+#define SET_ASM_OP "\t.set\t"
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