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/* Definitions of target machine for GNU compiler, for ARM with a.out
Copyright (C) 1995-2018 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. */
#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" \
}
#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 \
{ \
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. */
#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"
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