diff options
Diffstat (limited to 'src/u_print.S')
| -rw-r--r-- | src/u_print.S | 55 |
1 files changed, 51 insertions, 4 deletions
diff --git a/src/u_print.S b/src/u_print.S index 47a9483..969cf28 100644 --- a/src/u_print.S +++ b/src/u_print.S @@ -1,14 +1,61 @@ +/* + * ======================== + * ===== =============== + * ====== ================ + * ====== ================ + * ====== ==== ==== == + * ====== === == = = + * ====== === = == = + * = === === = == ==== + * = === === = == = = + * == ===== ==== == + * ======================== + * + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2020 Joe + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the organization nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOE ''AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL JOE BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * bsdsetsid: src/c_bsdsetsid.S + * 2020-11-19 13:27 + * Joe + * + * Util functions to print to standard out or standard error. + */ + .text .extern u_strlen .globl u_pout .globl u_perr u_pout: - mov $0x1, %r11 # stdout + mov $0x1, %r11 /* stdout */ jmp u_print u_perr: - mov $0x2, %r11 # stderr + mov $0x2, %r11 /* stderr */ jmp u_print u_print: @@ -16,11 +63,11 @@ u_print: mov %rax, %rdx mov %rdi, %rsi mov %r11, %rdi - mov $0x4, %rax # SYS_write + mov $0x4, %rax /* SYS_write */ syscall lea nl, %rsi mov $0x1, %rdx - mov $0x4, %rax # SYS_write + mov $0x4, %rax /* SYS_write */ syscall ret |