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/* Assembler macros for C-SKY.
Copyright (C) 2018-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#include <sysdeps/generic/sysdep.h>
#include <features.h>
#ifdef __ASSEMBLER__
# define ASM_SIZE_DIRECTIVE(name) .size name,.-name
/* Define an entry point visible from C. */
# define ENTRY(name) \
.globl name; \
.type name,@function; \
.align 4; \
name##:; \
cfi_startproc; \
CALL_MCOUNT
# undef END
# define END(name) \
cfi_endproc; \
ASM_SIZE_DIRECTIVE(name)
/* If compiled for profiling, call `mcount' at the start of each function. */
# ifdef PROF
# ifdef __PIC__
# define CALL_MCOUNT \
subi sp, 4; \
stw lr, (sp, 0); \
grs t0, .Lgetpc; \
.Lgetpc: \
lrw gb, .Lgetpc@GOTPC; \
addu gb, t0; \
lrw t1, _mcount@PLT; \
ldr.w t0, (gb, t1 << 0); \
jmp t0;
# else
# define CALL_MCOUNT \
subi sp, 4; \
stw lr, (sp, 0); \
jbsr _mcount;
# endif
# else
# define CALL_MCOUNT /* Do nothing. */
# endif
# if defined (__CK860__)
/* Instruction fetch will be faster when the label is 16 bytes aligned.
Filling with nop instruction to avoid extra jump. */
# define LABLE_ALIGN \
.balignw 16, 0x6c03
# define PRE_BNEZAD(R)
# define BNEZAD(R, L) \
bnezad R, L
# else
# define LABLE_ALIGN \
.balignw 8, 0x6c03
# define PRE_BNEZAD(R) \
subi R, 1
# define BNEZAD(R, L) \
bnez R, L
# endif
#endif
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