mes/lib/linux/riscv64-mes-tcc/exit-42.S
Ekaitz Zarraga 10054b2f17 riscv64: add support for tcc
Adapted from -gcc but make assembly match tcc style assembly where the
offsets are received as an extra input argument:

  sw a0, 9(t0)

Becomes:

  sw a0, t0, 9

* lib/linux/riscv64-mes-tcc/_exit.c,
lib/linux/riscv64-mes-tcc/_write.c,
lib/linux/riscv64-mes-tcc/crt1.c,
lib/linux/riscv64-mes-tcc/exit-42.S,
lib/linux/riscv64-mes-tcc/hello-mes.S,
lib/linux/riscv64-mes-tcc/syscall-internal.c,
lib/linux/riscv64-mes-tcc/syscall.c: New files.
2023-11-05 09:45:31 +01:00

33 lines
1.1 KiB
ArmAsm

/*
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2021 W. J. van der Laan <laanwj@protonmail.com>
* Copyright © 2023 Ekaitz Zarraga <ekaitz@elenq.tech>
*
* This file is part of GNU Mes.
*
* GNU Mes 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 of the License, or (at
* your option) any later version.
*
* GNU Mes 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.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
/** Code: */
SYS_exit = 93 /* Linux syscalls. */
.globl _start /* Magic linker symbol: --entry-address. */
.text /* Program text. */
_start:
li a7, SYS_exit /* System call function: exit, in a7. */
li a0, 42 /* 1st parameter: exit status, in a0. */
ecall /* Call system. */
wfi /* Should not be reached. */