diff options
| -rw-r--r-- | Makefile | 38 | ||||
| -rw-r--r-- | src/c_bsdsetsid.S | 2 | ||||
| -rw-r--r-- | src/u_hexdec.S | 72 | ||||
| -rw-r--r-- | src/u_strncmp.S | 56 |
4 files changed, 154 insertions, 14 deletions
@@ -11,7 +11,7 @@ # ======================== # # bsdsetsid: Makefile -# 2020-11-13 13:22 +# 2020-11-21 14:36 # Joe # # BSD Makefile @@ -19,32 +19,44 @@ default: all SRCS_DIR := src/ -PREFIX := /usr/local/ +OBJS_DIR := obj/ +PREFIX ?= /usr/local/ DESTDIR := +MAKEOBJDIR := ./ -SRCS := ${SRCS_DIR}c_bsdsetsid.S -SRCS += ${SRCS_DIR}e_err.S -SRCS += ${SRCS_DIR}u_print.S -SRCS += ${SRCS_DIR}u_strlen.S +SRCS = c_bsdsetsid +SRCS += e_err +SRCS += u_hexdec +SRCS += u_print +SRCS += u_strlen +SRCS += u_strncmp +SRCS := ${SRCS:S/$/.S/g} +SRCS := ${SRCS:S/^/${SRCS_DIR}/g} -OBJS = ${SRCS:.S=.o} +OBJS := ${SRCS:=.o} NAME := bsdsetsid RM := rm -f +RMDIR := rmdir -p +MKDIR := mkdir -p -.SUFFIXES: .S .o +.OBJDIR: ./ +.SUFFIXES: .S.o .o +.S.S.o: + ${AS} -o ${.TARGET:S/src/obj/} ${.IMPSRC} -.S.o: - ${AS} -o ${.TARGET} ${.IMPSRC} +${OBJS_DIR}: + ${MKDIR} ${OBJS_DIR} ${NAME}: ${OBJS} - ${CC} -o ${.TARGET} ${.ALLSRC} + ${CC} -o ${.TARGET} ${.ALLSRC:S/src/obj/} -all: ${NAME} +all: ${OBJS_DIR} ${NAME} clean: - ${RM} ${OBJS} ${NAME} vgcore* + ${RM} ${OBJS:S/src/obj/} ${NAME} vgcore* + ${RM} -R obj .PHONY: all clean diff --git a/src/c_bsdsetsid.S b/src/c_bsdsetsid.S index 2c2d158..9f0e420 100644 --- a/src/c_bsdsetsid.S +++ b/src/c_bsdsetsid.S @@ -69,7 +69,7 @@ c_parent: c_child: xor %rax, %rax - mov $0x93, %rax /* SYS_setsid */ + movb $0x93, %al /* SYS_setsid */ syscall test %rax, %rax js e_setsid diff --git a/src/u_hexdec.S b/src/u_hexdec.S new file mode 100644 index 0000000..a362ba6 --- /dev/null +++ b/src/u_hexdec.S @@ -0,0 +1,72 @@ +/* + * ======================== + * ===== =============== + * ====== ================ + * ====== ================ + * ====== ==== ==== == + * ====== === == = = + * ====== === = == = + * = === === = == ==== + * = === === = == = = + * == ===== ==== == + * ======================== + * + * 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_strncmp.S b/src/u_strncmp.S new file mode 100644 index 0000000..9c90cd0 --- /dev/null +++ b/src/u_strncmp.S @@ -0,0 +1,56 @@ +/* + * ======================== + * ===== =============== + * ====== ================ + * ====== ================ + * ====== ==== ==== == + * ====== === == = = + * ====== === = == = + * = === === = == ==== + * = === === = == = = + * == ===== ==== == + * ======================== + * + * 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 14:02 + * Joe + * + * General error handling happen here. + */ + +.text +.globl u_strncmp + +u_strncmp: +# xor %rcx, %rcx +# dec %rdx +#.u.loop +# cmpb (%rsi) + ret |