16f4fc3263
* module/mescc/M1.scm (riscv:i-format, riscv:j-format, riscv:u-format): New procedures for RISC-V instruction formats. (info->M1): Use them to switch from !0xAB to M1 weird strings 'AB'. * module/mescc/riscv64/as.scm, lib/linux/riscv64-mes-m2/_exit.c ib/linux/riscv64-mes-m2/_write.c,. lib/linux/riscv64-mes-m2/crt1.M1,. lib/linux/riscv64-mes-m2/syscall.c,. lib/linux/riscv64-mes-mescc/_exit.c,. lib/linux/riscv64-mes-mescc/_write.c,. lib/linux/riscv64-mes-mescc/crt1.c,. lib/linux/riscv64-mes-mescc/syscall-internal.c,. lib/linux/riscv64-mes-mescc/syscall.c,. lib/m2/riscv64/riscv64_defs.M1,. lib/riscv64-mes-mescc/setjmp.c,. lib/riscv64-mes/riscv64.M1: Switch to riscv64 word-based macros. * lib/linux/open.c (open)[!SYS_open]: Add support using openat syscall. * include/linux/riscv64/syscall.h (MAKESTRING, MAKESTRING2, RISCV_SYSCALL): New macros.
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017,2018,2019,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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* Copyright © 2023 Andrius Štikonas <andrius@stikonas.eu>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/syscall.h>
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#include <arch/syscall.h>
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#include <mes/lib.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#if __M2__
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int
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open (char *file_name, int flags, int mask)
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{
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#if defined (SYS_open)
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int r = _sys_call3 (SYS_open, file_name, flags, mask);
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#elif defined (SYS_openat)
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int r = _sys_call4 (SYS_openat, AT_FDCWD, file_name, flags, mask);
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#else
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#error No usable open syscall
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#endif
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if (r > 2)
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__ungetc_clear (r);
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return r;
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}
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#else // !__M2__
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int
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open (char const *file_name, int flags, ...)
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{
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va_list ap;
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va_start (ap, flags);
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int mask = va_arg (ap, int);
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#if defined (SYS_open)
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int r = _sys_call3 (SYS_open, (long) file_name, flags, mask);
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#elif defined (SYS_openat)
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int r = _sys_call4 (SYS_openat, AT_FDCWD, (long) file_name, flags, mask);
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#else
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#error No usable open syscall
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#endif
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va_end (ap);
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if (r > 2)
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__ungetc_clear (r);
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return r;
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}
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#endif // !__M2__
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