| /* Definitions of target machine for GNU compiler, for ARM with a.out |
| Copyright (C) 1995-2021 Free Software Foundation, Inc. |
| Contributed by Richard Earnshaw (rearnsha@armltd.co.uk). |
| |
| This file is part of GCC. |
| |
| 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. |
| |
| 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. |
| |
| 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. |
| |
| 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 |
| |
| /* 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 |
| |
| #ifndef USER_LABEL_PREFIX |
| #define USER_LABEL_PREFIX "_" |
| #endif |
| |
| #ifndef LOCAL_LABEL_PREFIX |
| #define LOCAL_LABEL_PREFIX "" |
| #endif |
| |
| /* 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. */ |
| |
| #ifndef REGISTER_NAMES |
| #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 |
| |
| #ifndef ADDITIONAL_REGISTER_NAMES |
| #define ADDITIONAL_REGISTER_NAMES \ |
| { \ |
| {"a1", 0}, \ |
| {"a2", 1}, \ |
| {"a3", 2}, \ |
| {"a4", 3}, \ |
| {"v1", 4}, \ |
| {"v2", 5}, \ |
| {"v3", 6}, \ |
| {"v4", 7}, \ |
| {"v5", 8}, \ |
| {"v6", 9}, \ |
| {"rfp", 9}, /* Historical. */ \ |
| {"sb", 9}, /* Historical. */ \ |
| {"v7", 10}, \ |
| {"sl", 10}, /* Historical. */ \ |
| {"r11", 11}, /* fp */ \ |
| {"r12", 12}, /* ip */ \ |
| {"r13", 13}, /* sp */ \ |
| {"r14", 14}, /* lr */ \ |
| {"r15", 15} /* pc */ \ |
| } |
| #endif |
| |
| #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 |
| |
| #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 |
| |
| /* Acorn dbx moans about continuation chars, so don't use any. */ |
| #ifndef DBX_CONTIN_LENGTH |
| #define DBX_CONTIN_LENGTH 0 |
| #endif |
| |
| /* Output a function label definition. */ |
| #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 |
| |
| /* 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%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM)) |
| #endif |
| |
| /* Output an element of a dispatch table. */ |
| #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, (const unsigned char *) (PTR), LEN) |
| |
| /* Output a gap. In fact we fill it with nulls. */ |
| #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. */ |
| #ifndef ASM_OUTPUT_ALIGN |
| #define ASM_OUTPUT_ALIGN(STREAM, POWER) \ |
| do \ |
| { \ |
| 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. */ |
| #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 "@" |
| #endif |
| |
| /* This works for GAS and some other assemblers. */ |
| #define SET_ASM_OP "\t.set\t" |
