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/* Assembler macro definitions. OpenRISC version.
Copyright (C) 2022-2024 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>
#if defined __ASSEMBLER__ || defined REQUEST_ASSEMBLER_MACROS
/* Make use of .size directive. */
#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
/* Define an entry point visible from C. */
#define ENTRY(name) \
.globl C_SYMBOL_NAME(name); \
.type C_SYMBOL_NAME(name),@function; \
.align 4; \
C_LABEL(name) \
cfi_startproc; \
CALL_MCOUNT
#undef END
#define END(name) \
cfi_endproc; \
ASM_SIZE_DIRECTIVE(name)
/* Since C identifiers are not normally prefixed with an underscore
on this system, the asm identifier `syscall_error' intrudes on the
C name space. Make sure we use an innocuous name. */
#define syscall_error __syscall_error
/* If compiled for profiling, call `mcount' at the start of each function. */
#ifdef PROF
# ifdef __PIC__
# define CALL_MCOUNT \
l.addi r1, r1, -8; \
l.sw 0(r1), r9; \
l.sw 4(r1), r3; \
l.ori r3, r9, 0; \
l.j plt(_mcount); \
l.nop; \
l.lwz r9, 0(r1); \
l.lwz r3, 4(r1); \
l.addi r1, r1, 8;
# else
# define CALL_MCOUNT \
l.addi r1, r1, -8; \
l.sw 0(r1), r9; \
l.sw 4(r1), r3; \
l.ori r3, r9, 0; \
l.movhi r15, hi(_mcount); \
l.ori r15, r15, lo(_mcount); \
l.jr r15; \
l.nop; \
l.lwz r9, 0(r1); \
l.lwz r3, 4(r1); \
l.addi r1, r1, 8;
# endif
#else
# define CALL_MCOUNT /* Do nothing. */
#endif
/* Local label name for asm code. */
#define L(name) .L##name
#endif /* __ASSEMBLER__ */
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