diff options
| -rw-r--r-- | src/c_bsdsetsid.S | 131 | ||||
| -rw-r--r-- | src/e_err.S | 111 | ||||
| -rw-r--r-- | src/u_hexdec.S | 72 | ||||
| -rw-r--r-- | src/u_print.S | 67 | ||||
| -rw-r--r-- | src/u_strlen.S | 61 | ||||
| -rw-r--r-- | src/u_strncmp.S | 81 |
6 files changed, 0 insertions, 523 deletions
diff --git a/src/c_bsdsetsid.S b/src/c_bsdsetsid.S deleted file mode 100644 index 5b71669..0000000 --- a/src/c_bsdsetsid.S +++ /dev/null @@ -1,131 +0,0 @@ -/* - * ======================== - * ===== =============== - * ====== ================ - * ====== ================ - * ====== ==== ==== == - * ====== === == = = - * ====== === = == = - * = === === = == ==== - * = === === = == = = - * == ===== ==== == - * ======================== - * - * 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 - * 2020-11-21 18:47 - * Joe - * - * This is the entrypoint of the program. - */ - -.data -status: .space 4, 0x0 -ref_w_opt: .asciz "-w" - -.text -.globl main - -c_parent_old: - mov %rax, %rdi - lea status, %rsi - xor %rdx, %rdx - xor %rcx, %rcx - xor %rax, %rax - movb $0x7, %al /* SYS_wait4 */ - syscall - movq (%rsi), %rax - and $0xff00, %rax - shr $0x8, %rax - push %rax - jmp u_hexdec -c_parent_next: - pop %rdi - movb $0x7, %al - xor %rax, %rax - movb $0x1, %al /* SYS_exit */ - syscall - -c_w_opt: - mov $0x1, %r15 - pop %rdi - mov %rdi, %r8 - push %rdi - cmp $0x2, %r8 - jle e_noarg - jmp .c.main_next - -main: - cmpb $0x1, %dil - jle e_noarg - xor %r15, %r15 - push %rdx - push %rsi - push %rdi - lea ref_w_opt, %rdi - mov $0x3, %rdx - call u_strncmp - cmp $0x0, %rax - je c_w_opt -.c.main_next: - xor %rax, %rax - movb $0x2, %al /* SYS_fork */ - syscall - test %rax, %rax - js e_fork - jz c_child - -c_parent: -# jmp c_exit - jmp c_parent_old - -c_child: - xor %rax, %rax - movb $0x93, %al /* SYS_setsid */ - syscall - test %rax, %rax - js e_setsid - xor %rax, %rax - pop %rdi - pop %rsi - pop %rdx - mov $0x1, %rcx - mov (%rsi, %rcx, 8), %rdi - lea 0(%rsi, %rcx, 8), %rsi -# movb $0x3b, %al /* SYS_execve */ -# syscall - callq execve - test %rax, %rax - js e_execve - -c_exit: - xor %rdi, %rdi - xor %rax, %rax - movb $0x1, %al /* SYS_exit */ - syscall diff --git a/src/e_err.S b/src/e_err.S deleted file mode 100644 index c8528f7..0000000 --- a/src/e_err.S +++ /dev/null @@ -1,111 +0,0 @@ -/* - * ======================== - * ===== =============== - * ====== ================ - * ====== ================ - * ====== ==== ==== == - * ====== === == = = - * ====== === = == = - * = === === = == ==== - * = === === = == = = - * == ===== ==== == - * ======================== - * - * 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/e_err.S - * 2020-11-22 17:09 - * Joe - * - * General error handling happen here. - */ - -.data -nl: .asciz "\n" -e_setsid_str: .asciz "bsdsetsid: setsid: " -e_execve_str: .asciz "bsdsetsid: execve: " -e_fork_str: .asciz "bsdsetsid: fork: " -e_noarg_str: .asciz "bsdsetsid: no command specified\n" - -.text -.extern strerror -.globl e_execve -.globl e_fork -.globl e_noarg -.globl e_setsid - -e_noarg: - lea e_noarg_str, %rdi - call u_perr - mov $0x1, %rdi - jmp e_exit - -e_fork: - push %rax - lea e_fork_str, %rdi - call u_perr - pop %rax - mov %rax, %rdi - call strerror - mov %rax, %rdi - call u_perr - mov $0x2, %rdi - jmp e_exit - -e_setsid: - push %rax - lea e_setsid_str, %rdi - call u_perr - pop %rax - mov %rax, %rdi - call strerror - mov %rax, %rdi - call u_perr - lea nl, %rdi - call u_perr - mov $0x3, %rdi - jmp e_exit - -e_execve: - push %rax - lea e_execve_str, %rdi - call u_perr - pop %rax - mov %rax, %rdi - call strerror - mov %rax, %rdi - call u_perr - lea nl, %rdi - call u_perr - mov $0x4, %rdi - jmp e_exit - -e_exit: - xor %rax, %rax - movb $0x1, %al /* SYS_exit */ - syscall diff --git a/src/u_hexdec.S b/src/u_hexdec.S deleted file mode 100644 index 5e0f019..0000000 --- a/src/u_hexdec.S +++ /dev/null @@ -1,72 +0,0 @@ -/* - * ======================== - * ===== =============== - * ====== ================ - * ====== ================ - * ====== ==== ==== == - * ====== === == = = - * ====== === = == = - * = === === = == ==== - * = === === = == = = - * == ===== ==== == - * ======================== - * - * 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/u_hexdec.S - * 2020-11-21 14:00 - * Joe - * - * General error handling happen here. - */ - -.text -.globl u_hexdec - -u_hexdec: - xor %r10, %r10 - xor %r9, %r9 - xor %r8, %r8 - mov $0xa, %rbx - clc -.u.repeat: - xor %rdx, %rdx - idiv %rbx - or $0x0, %dl - mov $0x8, %rcx -.u.shift: - rcrb $0x1, %dl - rcr $0x1, %r10 - rcr $0x1, %r9 - rcr $0x1, %r8 - dec %rcx - and %rcx, %rcx - jnz .u.shift - and %rax, %rax - jnz .u.repeat - ret diff --git a/src/u_print.S b/src/u_print.S deleted file mode 100644 index 36fca6d..0000000 --- a/src/u_print.S +++ /dev/null @@ -1,67 +0,0 @@ -/* - * ======================== - * ===== =============== - * ====== ================ - * ====== ================ - * ====== ==== ==== == - * ====== === == = = - * ====== === = == = - * = === === = == ==== - * = === === = == = = - * == ===== ==== == - * ======================== - * - * 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/u_print.S - * 2020-11-19 13:27 - * Joe - * - * Util functions to print to standard out or standard error. - */ - -.text -.globl u_pout -.globl u_perr - -u_pout: - mov $0x1, %r11 /* stdout */ - jmp u_print - -u_perr: - mov $0x2, %r11 /* stderr */ - jmp u_print - -u_print: - call u_strlen - mov %rax, %rdx - mov %rdi, %rsi - mov %r11, %rdi - mov $0x4, %rax /* SYS_write */ - syscall - ret diff --git a/src/u_strlen.S b/src/u_strlen.S deleted file mode 100644 index aaa6c02..0000000 --- a/src/u_strlen.S +++ /dev/null @@ -1,61 +0,0 @@ -/* - * ======================== - * ===== =============== - * ====== ================ - * ====== ================ - * ====== ==== ==== == - * ====== === == = = - * ====== === = == = - * = === === = == ==== - * = === === = == = = - * == ===== ==== == - * ======================== - * - * 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/u_strlen.S - * 2020-11-20 19:25 - * Joe - * - * Simple implementation of strlen. - */ - -.text -.globl u_strlen - -u_strlen: - mov %rdi, %rcx -.u.loop: - cmpb $0x0, (%rcx) - je .u.ret - inc %rcx - jmp .u.loop -.u.ret: - sub %rdi, %rcx - mov %rcx, %rax - ret diff --git a/src/u_strncmp.S b/src/u_strncmp.S deleted file mode 100644 index 694ae0f..0000000 --- a/src/u_strncmp.S +++ /dev/null @@ -1,81 +0,0 @@ -/* - * ======================== - * ===== =============== - * ====== ================ - * ====== ================ - * ====== ==== ==== == - * ====== === == = = - * ====== === = == = - * = === === = == ==== - * = === === = == = = - * == ===== ==== == - * ======================== - * - * 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/u_strncmp.S - * 2020-11-21 18:47 - * Joe - * - * General error handling happen here. - */ - -.text -.globl u_strncmp - -u_strncmp: - xor %rcx, %rcx - dec %rdx -.u.loop: - xor %r8, %r8 - xor %r9, %r9 - movb (%rdi, %rcx), %r8b - movb (%rsi, %rcx), %r9b - cmpb %r8b, %r9b - jne .u.retdiff - cmp %rdx, %rcx - jge .u.retdiff - cmpb $0x0, (%rdi, %rcx) - jne .u.inc - cmpb $0x0, (%rsi, %rcx) - je .u.retzer -.u.inc: - inc %rcx - jmp .u.loop -.u.retdiff: - xor %r8, %r8 - xor %r9, %r9 - movb (%rdi, %rcx), %r8b - movb (%rsi, %rcx), %r9b - sub %r9, %r8 - xor %rax, %rax - movl %r8d, %eax - ret -.u.retzer: - xor %rax, %rax - ret |