debut de nm d'apres la video de l'intra
This commit is contained in:
Jack Halford
commit
d6732360a1
7 changed files with 217 additions and 0 deletions
3
nm-otool/.gitmodules
vendored
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3
nm-otool/.gitmodules
vendored
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[submodule "libft"]
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path = libft
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url = https://github.com/jzck/libft
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84
nm-otool/Makefile
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84
nm-otool/Makefile
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# **************************************************************************** #
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# #
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# ::: :::::::: #
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# Makefile :+: :+: :+: #
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# +:+ +:+ +:+ #
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# By: jhalford <jack@crans.org> +#+ +:+ +#+ #
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# +#+#+#+#+#+ +#+ #
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# Created: 2017/02/19 03:29:38 by jhalford #+# #+# #
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# Updated: 2017/02/19 03:56:22 by jhalford ### ########.fr #
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# #
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# **************************************************************************** #
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NAME = ft_nm
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CC = gcc
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MKDIR = mkdir -p
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RM = /bin/rm -rf
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W_FLAGS = -Wall -Wextra -Werror
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D_FLAGS =
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V_FLAGS = -fvisibility=hidden
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FLAGS = $(W_FLAGS) $(D_FLAGS) $(V_FLAGS)
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DELTA = $$(echo "$$(tput cols)-47"|bc)
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LIBFT_DIR = libft/
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LIBFT_LIB = $(LIBFT_DIR)libft.a
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LIBFT_INC = $(LIBFT_DIR)includes/
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SRC_DIR = src/
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INC_DIR = includes/
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OBJ_DIR = objs/
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SRC_BASE = \
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ft_nm.c
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SRCS = $(addprefix $(SRC_DIR), $(SRC_BASE))
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OBJS = $(addprefix $(OBJ_DIR), $(SRC_BASE:.c=.o))
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NB = $(words $(SRC_BASE))
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INDEX = 0
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all:
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@make -j $(NAME)
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$(NAME): $(OBJ_DIR) $(OBJS)
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@$(CC) $(FLAGS) $(D_FLAGS) \
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-I $(INC_DIR) \
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-I $(LIBFT_INC) \
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$(LIBS) \
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$(LIBFT_LIB) $(OBJS) \
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-o $(NAME)
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@$(eval INDEX=$(shell echo $$(($(INDEX)+1))))
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@strip -x $(NAME)
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@printf "\r\e[48;5;15;38;5;25m✅ MAKE $(NAME)\e[0m\e[K\n"
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$(OBJ_DIR)%.o: $(SRC_DIR)%.c | $(OBJ_DIR)
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@$(eval DONE=$(shell echo $$(($(INDEX)*20/$(NB)))))
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@$(eval PERCENT=$(shell echo $$(($(INDEX)*100/$(NB)))))
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@$(eval COLOR=$(shell echo $$(($(PERCENT)%35+196))))
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@$(eval TO_DO=$(shell echo $$((20-$(INDEX)*20/$(NB)))))
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@printf "\r\e[38;5;11m⌛ MAKE %10.10s : %2d%% \e[48;5;%dm%*s\e[0m%*s\e[48;5;255m \e[0m \e[38;5;11m %*s\e[0m\e[K" $(NAME) $(PERCENT) $(COLOR) $(DONE) "" $(TO_DO) "" $(DELTA) "$@"
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@$(CC) $(FLAGS) -MMD -c $< -o $@\
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-I $(INC_DIR) \
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-I $(LIBFT_INC)
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@$(eval INDEX=$(shell echo $$(($(INDEX)+1))))
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$(OBJ_DIR):
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@$(MKDIR) $(OBJ_DIR)
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@$(MKDIR) $(dir $(OBJS))
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clean:
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@$(RM) $(OBJ_DIR)
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@printf "\r\e[38;5;202m✖ clean $(NAME).\e[0m\e[K\n"
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fclean: clean
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@$(RM) $(NAME)
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@printf "\r\e[38;5;196m❌ fclean $(NAME).\e[0m\e[K\n"
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re: fclean all
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.PHONY: all clean fclean re
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-include $(OBJS:.o=.d)
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BIN
nm-otool/ft_nm
Executable file
BIN
nm-otool/ft_nm
Executable file
Binary file not shown.
25
nm-otool/includes/ft_nm.h
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25
nm-otool/includes/ft_nm.h
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/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_nm.h :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/02/19 03:09:10 by jhalford #+# #+# */
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/* Updated: 2017/02/19 03:32:51 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#ifndef FT_NM_H
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# define FT_NM_H
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# include "libft.h"
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# include <stdio.h>
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# include <sys/mman.h>
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# include <mach-o/loader.h>
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# include <mach-o/nlist.h>
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# include <fcntl.h>
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# include <sys/stat.h>
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# include <stdlib.h>
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#endif
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1
nm-otool/libft
Submodule
1
nm-otool/libft
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@ -0,0 +1 @@
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Subproject commit 0ca8ca817f32fc0345ef93ef74a3abe2583bd89c
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87
nm-otool/src/ft_nm.c
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87
nm-otool/src/ft_nm.c
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/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_nm.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/02/19 03:09:12 by jhalford #+# #+# */
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/* Updated: 2017/02/19 03:56:34 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "ft_nm.h"
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void print_output(int nsyms, int symoff, int stroff, void *ptr)
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{
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int i;
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char *stringtable;
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struct nlist_64 *array;
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array = ptr + symoff;
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stringtable = (void*)ptr + stroff;
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for (i = 0; i < nsyms; ++i)
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{
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ft_printf("%s\n", stringtable + array[i].n_un.n_strx);
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}
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}
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void handle_64(void *ptr)
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{
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int ncmds;
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int i;
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struct mach_header_64 *header;
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struct load_command *lc;
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struct symtab_command *sym;
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header = (struct mach_header_64*)ptr;
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ncmds = header->ncmds;
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lc = ptr + sizeof(*header);
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for (i = 0; i < ncmds; i++)
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{
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if (lc->cmd == LC_SYMTAB)
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{
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sym = (struct symtab_command*)lc;
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/* ft_printf("nb symbols: %d\n", sym->nsyms); */
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print_output(sym->nsyms, sym->symoff, sym->stroff, ptr);
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break ;
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}
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lc = (void*)lc + lc->cmdsize;
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}
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}
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void nm(char *ptr)
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{
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unsigned int magic_number;
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magic_number = *(int *)ptr;
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if (magic_number == MH_MAGIC_64)
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{
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/* ft_printf("je suis un binaire 64 bits\n"); */
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handle_64(ptr);
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}
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}
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int main(int ac, char **av)
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{
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int fd;
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char *ptr;
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struct stat buf;
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if (ac != 2)
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{
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ft_dprintf(2, "Please give me an arg\n");
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return (1);
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}
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if ((fd = open(av[1], O_RDONLY)) < 0)
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return (1);
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if ((fstat(fd, &buf)) < 0)
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return (1);
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if ((ptr = mmap(NULL, buf.st_size, PROT_READ, MAP_PRIVATE, fd, 0))
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== MAP_FAILED)
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return (1);
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nm(ptr);
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if (munmap(ptr, buf.st_size))
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return (1);
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return (0);
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}
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17
nm-otool/update_makefile.sh
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17
nm-otool/update_makefile.sh
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MYPATH=$(pwd)
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CUR_MAKEFILE=$MYPATH/Makefile
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if [ -e $CUR_MAKEFILE ]
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then
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echo "regenerate Makefile"
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sed "`grep -n 'SRC_BASE =' $CUR_MAKEFILE | sed 's/:.*//'`, \$d" $CUR_MAKEFILE > NEWMAKEFILE
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grep 'SRC_BASE =' $CUR_MAKEFILE >> NEWMAKEFILE
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expr "$(find ./src | grep "\.c" | sed -e 's/src\///' -e 's/\.\///' -e 's/$/\\/')" : "\(.*\).$" >> NEWMAKEFILE
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echo "" >> NEWMAKEFILE
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grep 'SRCS =' $CUR_MAKEFILE >> NEWMAKEFILE
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sed "1, `grep -n 'SRCS =' $CUR_MAKEFILE | sed 's/:.*//'`d" $CUR_MAKEFILE >> NEWMAKEFILE
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mv $CUR_MAKEFILE ~/Documents/.OLDMakefile
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mv NEWMAKEFILE $CUR_MAKEFILE
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echo "Makefile done (copy still alive in ~/Documents/.OLDMakefile)"
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else
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echo "Makefile not found."
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fi
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