67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* symbol_init.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/10/26 18:07:28 by jhalford #+# #+# */
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/* Updated: 2017/11/01 12:36:06 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "ft_nm_otool.h"
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t_machodata *g_data;
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int symbol_init(t_symbol *symbol,
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char *stringtable, struct nlist *array, int i)
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{
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symbol->type = 0;
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symbol->pos = i;
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symbol->nlist.n_type = endian(array[i].n_type, 8);
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symbol->nlist.n_sect = endian(array[i].n_sect, 8);
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symbol->nlist.n_desc = endian(array[i].n_desc, 16);
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symbol->nlist.n_value = endian(array[i].n_value, 32);
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symbol->string = stringtable + endian(array[i].n_un.n_strx, 32);
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return (0);
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}
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static int symbol_gettype(int type_mask,
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struct nlist nlist, struct section *section)
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{
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if (nlist.n_type & N_STAB)
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return (SYM_STAB);
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else if (type_mask == N_UNDF && nlist.n_type & N_EXT && nlist.n_value)
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return (SYM_COMMON);
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else if (type_mask == N_UNDF)
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return (SYM_UNDF);
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else if (type_mask == N_ABS)
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return (SYM_ABS);
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else if (type_mask == N_SECT && ft_strequ("__text", section->sectname))
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return (SYM_TEXT);
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else if (type_mask == N_SECT && ft_strequ("__data", section->sectname))
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return (SYM_DATA);
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else if (type_mask == N_SECT && ft_strequ("__bss", section->sectname))
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return (SYM_BSS);
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else if (type_mask == N_INDR)
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return (SYM_INDR);
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else
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return (SYM_OTHER);
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}
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int symbol_set(t_symbol *sym, t_machodata *data)
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{
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t_list *lst;
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if (sym->nlist.n_sect &&
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(lst = ft_lst_at(data->sects, sym->nlist.n_sect - 1)))
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sym->section = *(struct section**)(lst->content);
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else
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sym->section = NULL;
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sym->type = symbol_gettype(
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sym->nlist.n_type & N_TYPE,
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sym->nlist,
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sym->section);
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return (0);
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}
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