#!/usr/bin/env python3 """Generate many skeletal functions with a thick call graph spanning a large address space to induce lld to create branch-islands for arm64. """ from __future__ import print_function import random import argparse import string from pprint import pprint from math import factorial from itertools import permutations # This list comes from libSystem.tbd and contains a sizeable subset # of dylib calls available for all MacOS target archs. libSystem_calls = ( "__CurrentRuneLocale", "__DefaultRuneLocale", "__Exit", "__NSGetArgc", "__NSGetArgv", "__NSGetEnviron", "__NSGetMachExecuteHeader", "__NSGetProgname", "__PathLocale", "__Read_RuneMagi", "___Balloc_D2A", "___Bfree_D2A", "___ULtod_D2A", "____mb_cur_max", "____mb_cur_max_l", "____runetype", "____runetype_l", "____tolower", "____tolower_l", "____toupper", "____toupper_l", "___add_ovflpage", "___addel", "___any_on_D2A", "___assert_rtn", "___b2d_D2A", "___big_delete", "___big_insert", "___big_keydata", "___big_return", "___big_split", "___bigtens_D2A", "___bt_close", "___bt_cmp", "___bt_defcmp", "___bt_defpfx", "___bt_delete", "___bt_dleaf", "___bt_fd", "___bt_free", "___bt_get", "___bt_new", "___bt_open", "___bt_pgin", "___bt_pgout", "___bt_put", "___bt_ret", "___bt_search", "___bt_seq", "___bt_setcur", "___bt_split", "___bt_sync", "___buf_free", "___call_hash", "___cleanup", "___cmp_D2A", "___collate_equiv_match", "___collate_load_error", "___collate_lookup", "___collate_lookup_l", "___copybits_D2A", "___cxa_atexit", "___cxa_finalize", "___cxa_finalize_ranges", "___cxa_thread_atexit", "___d2b_D2A", "___dbpanic", "___decrement_D2A", "___default_hash", "___default_utx", "___delpair", "___diff_D2A", "___dtoa", "___expand_table", "___fflush", "___fgetwc", "___find_bigpair", "___find_last_page", "___fix_locale_grouping_str", "___fread", "___free_ovflpage", "___freedtoa", "___gdtoa", "___gdtoa_locks", "___get_buf", "___get_page", "___gethex_D2A", "___getonlyClocaleconv", "___hash_open", "___hdtoa", "___hexdig_D2A", "___hexdig_init_D2A", "___hexnan_D2A", "___hi0bits_D2A", "___hldtoa", "___i2b_D2A", "___ibitmap", "___increment_D2A", "___isctype", "___istype", "___istype_l", "___ldtoa", "___libc_init", "___lo0bits_D2A", "___log2", "___lshift_D2A", "___maskrune", "___maskrune_l", "___match_D2A", "___mb_cur_max", "___mb_sb_limit", "___memccpy_chk", "___memcpy_chk", "___memmove_chk", "___memset_chk", "___mult_D2A", "___multadd_D2A", "___nrv_alloc_D2A", "___opendir2", "___ovfl_delete", "___ovfl_get", "___ovfl_put", "___pow5mult_D2A", "___put_page", "___quorem_D2A", "___ratio_D2A", "___rec_close", "___rec_delete", "___rec_dleaf", "___rec_fd", "___rec_fmap", "___rec_fpipe", "___rec_get", "___rec_iput", "___rec_open", "___rec_put", "___rec_ret", "___rec_search", "___rec_seq", "___rec_sync", "___rec_vmap", "___rec_vpipe", "___reclaim_buf", "___rshift_D2A", "___rv_alloc_D2A", "___s2b_D2A", "___sF", "___sclose", "___sdidinit", "___set_ones_D2A", "___setonlyClocaleconv", "___sflags", "___sflush", "___sfp", "___sfvwrite", "___sglue", "___sinit", "___slbexpand", "___smakebuf", "___snprintf_chk", "___snprintf_object_size_chk", "___split_page", "___sprintf_chk", "___sprintf_object_size_chk", "___sread", "___srefill", "___srget", "___sseek", "___stack_chk_fail", "___stack_chk_guard", "___stderrp", "___stdinp", "___stdoutp", "___stpcpy_chk", "___stpncpy_chk", "___strcat_chk", "___strcp_D2A", "___strcpy_chk", "___strlcat_chk", "___strlcpy_chk", "___strncat_chk", "___strncpy_chk", "___strtodg", "___strtopdd", "___sum_D2A", "___svfscanf", "___swbuf", "___swhatbuf", "___swrite", "___swsetup", "___tens_D2A", "___tinytens_D2A", "___tolower", "___tolower_l", "___toupper", "___toupper_l", "___trailz_D2A", "___ulp_D2A", "___ungetc", "___ungetwc", "___vsnprintf_chk", "___vsprintf_chk", "___wcwidth", "___wcwidth_l", "__allocenvstate", "__atexit_receipt", "__c_locale", "__cleanup", "__closeutx", "__copyenv", "__cthread_init_routine", "__deallocenvstate", "__endutxent", "__flockfile_debug_stub", "__fseeko", "__ftello", "__fwalk", "__getenvp", "__getutxent", "__getutxid", "__getutxline", "__inet_aton_check", "__init_clock_port", "__int_to_time", "__libc_fork_child", "__libc_initializer", "__long_to_time", "__mkpath_np", "__mktemp", "__openutx", "__os_assert_log", "__os_assert_log_ctx", "__os_assumes_log", "__os_assumes_log_ctx", "__os_avoid_tail_call", "__os_crash", "__os_crash_callback", "__os_crash_fmt", "__os_debug_log", "__os_debug_log_error_str", "__putenvp", "__pututxline", "__rand48_add", "__rand48_mult", "__rand48_seed", "__readdir_unlocked", "__reclaim_telldir", "__seekdir", "__setenvp", "__setutxent", "__sigaction_nobind", "__sigintr", "__signal_nobind", "__sigvec_nobind", "__sread", "__sseek", "__subsystem_init", "__swrite", "__time32_to_time", "__time64_to_time", "__time_to_int", "__time_to_long", "__time_to_time32", "__time_to_time64", "__unsetenvp", "__utmpxname", "_a64l", "_abort", "_abort_report_np", "_abs", "_acl_add_flag_np", "_acl_add_perm", "_acl_calc_mask", "_acl_clear_flags_np", "_acl_clear_perms", "_acl_copy_entry", "_acl_copy_ext", "_acl_copy_ext_native", "_acl_copy_int", "_acl_copy_int_native", "_acl_create_entry", "_acl_create_entry_np", "_acl_delete_def_file", "_acl_delete_entry", "_acl_delete_fd_np", "_acl_delete_file_np", "_acl_delete_flag_np", "_acl_delete_link_np", "_acl_delete_perm", "_acl_dup", "_acl_free", "_acl_from_text", "_acl_get_entry", "_acl_get_fd", "_acl_get_fd_np", "_acl_get_file", "_acl_get_flag_np", "_acl_get_flagset_np", "_acl_get_link_np", "_acl_get_perm_np", "_acl_get_permset", "_acl_get_permset_mask_np", "_acl_get_qualifier", "_acl_get_tag_type", "_acl_init", "_acl_maximal_permset_mask_np", "_acl_set_fd", "_acl_set_fd_np", "_acl_set_file", "_acl_set_flagset_np", "_acl_set_link_np", "_acl_set_permset", "_acl_set_permset_mask_np", "_acl_set_qualifier", "_acl_set_tag_type", "_acl_size", "_acl_to_text", "_acl_valid", "_acl_valid_fd_np", "_acl_valid_file_np", "_acl_valid_link", "_addr2ascii", "_alarm", "_alphasort", "_arc4random", "_arc4random_addrandom", "_arc4random_buf", "_arc4random_stir", "_arc4random_uniform", "_ascii2addr", "_asctime", "_asctime_r", "_asprintf", "_asprintf_l", "_asxprintf", "_asxprintf_exec", "_atexit", "_atexit_b", "_atof", "_atof_l", "_atoi", "_atoi_l", "_atol", "_atol_l", "_atoll", "_atoll_l", "_backtrace", "_backtrace_from_fp", "_backtrace_image_offsets", "_backtrace_symbols", "_backtrace_symbols_fd", "_basename", "_basename_r", "_bcopy", "_brk", "_bsd_signal", "_bsearch", "_bsearch_b", "_btowc", "_btowc_l", "_catclose", "_catgets", "_catopen", "_cfgetispeed", "_cfgetospeed", "_cfmakeraw", "_cfsetispeed", "_cfsetospeed", "_cfsetspeed", "_cgetcap", "_cgetclose", "_cgetent", "_cgetfirst", "_cgetmatch", "_cgetnext", "_cgetnum", "_cgetset", "_cgetstr", "_cgetustr", "_chmodx_np", "_clearerr", "_clearerr_unlocked", "_clock", "_clock_getres", "_clock_gettime", "_clock_gettime_nsec_np", "_clock_port", "_clock_sem", "_clock_settime", "_closedir", "_compat_mode", "_confstr", "_copy_printf_domain", "_creat", "_crypt", "_ctermid", "_ctermid_r", "_ctime", "_ctime_r", "_daemon", "_daylight", "_dbm_clearerr", "_dbm_close", "_dbm_delete", "_dbm_dirfno", "_dbm_error", "_dbm_fetch", "_dbm_firstkey", "_dbm_nextkey", "_dbm_open", "_dbm_store", "_dbopen", "_devname", "_devname_r", "_difftime", "_digittoint", "_digittoint_l", "_dirfd", "_dirname", "_dirname_r", "_div", "_dprintf", "_dprintf_l", "_drand48", "_duplocale", "_dxprintf", "_dxprintf_exec", "_ecvt", "_encrypt", "_endttyent", "_endusershell", "_endutxent", "_endutxent_wtmp", "_erand48", "_err", "_err_set_exit", "_err_set_exit_b", "_err_set_file", "_errc", "_errx", "_execl", "_execle", "_execlp", "_execv", "_execvP", "_execvp", "_exit", "_f_prealloc", "_fchmodx_np", "_fclose", "_fcvt", "_fdopen", "_fdopendir", "_feof", "_feof_unlocked", "_ferror", "_ferror_unlocked", "_fflagstostr", "_fflush", "_fgetc", "_fgetln", "_fgetpos", "_fgetrune", "_fgets", "_fgetwc", "_fgetwc_l", "_fgetwln", "_fgetwln_l", "_fgetws", "_fgetws_l", "_fileno", "_fileno_unlocked", "_filesec_dup", "_filesec_free", "_filesec_get_property", "_filesec_init", "_filesec_query_property", "_filesec_set_property", "_filesec_unset_property", "_flockfile", "_fmemopen", "_fmtcheck", "_fmtmsg", "_fnmatch", "_fopen", "_fork", "_forkpty", "_fparseln", "_fprintf", "_fprintf_l", "_fpurge", "_fputc", "_fputrune", "_fputs", "_fputwc", "_fputwc_l", "_fputws", "_fputws_l", "_fread", "_free_printf_comp", "_free_printf_domain", "_freelocale", "_freopen", "_fscanf", "_fscanf_l", "_fseek", "_fseeko", "_fsetpos", "_fstatvfs", "_fstatx_np", "_fsync_volume_np", "_ftell", "_ftello", "_ftime", "_ftok", "_ftrylockfile", "_fts_children", "_fts_close", "_fts_open", "_fts_open_b", "_fts_read", "_fts_set", "_ftw", "_fungetrune", "_funlockfile", "_funopen", "_fwide", "_fwprintf", "_fwprintf_l", "_fwrite", "_fwscanf", "_fwscanf_l", "_fxprintf", "_fxprintf_exec", "_gcvt", "_getbsize", "_getc", "_getc_unlocked", "_getchar", "_getchar_unlocked", "_getcwd", "_getdate", "_getdate_err", "_getdelim", "_getdiskbyname", "_getenv", "_gethostid", "_gethostname", "_getipv4sourcefilter", "_getlastlogx", "_getlastlogxbyname", "_getline", "_getloadavg", "_getlogin", "_getlogin_r", "_getmntinfo", "_getmntinfo_r_np", "_getmode", "_getopt", "_getopt_long", "_getopt_long_only", "_getpagesize", "_getpass", "_getpeereid", "_getprogname", "_gets", "_getsourcefilter", "_getsubopt", "_gettimeofday", "_getttyent", "_getttynam", "_getusershell", "_getutmp", "_getutmpx", "_getutxent", "_getutxent_wtmp", "_getutxid", "_getutxline", "_getvfsbyname", "_getw", "_getwc", "_getwc_l", "_getwchar", "_getwchar_l", "_getwd", "_glob", "_glob_b", "_globfree", "_gmtime", "_gmtime_r", "_grantpt", "_hash_create", "_hash_destroy", "_hash_purge", "_hash_search", "_hash_stats", "_hash_traverse", "_hcreate", "_hdestroy", "_heapsort", "_heapsort_b", "_hsearch", "_imaxabs", "_imaxdiv", "_inet_addr", "_inet_aton", "_inet_lnaof", "_inet_makeaddr", "_inet_net_ntop", "_inet_net_pton", "_inet_neta", "_inet_netof", "_inet_network", "_inet_nsap_addr", "_inet_nsap_ntoa", "_inet_ntoa", "_inet_ntop", "_inet_ntop4", "_inet_ntop6", "_inet_pton", "_initstate", "_insque", "_isalnum", "_isalnum_l", "_isalpha", "_isalpha_l", "_isascii", "_isatty", "_isblank", "_isblank_l", "_iscntrl", "_iscntrl_l", "_isdigit", "_isdigit_l", "_isgraph", "_isgraph_l", "_ishexnumber", "_ishexnumber_l", "_isideogram", "_isideogram_l", "_islower", "_islower_l", "_isnumber", "_isnumber_l", "_isphonogram", "_isphonogram_l", "_isprint", "_isprint_l", "_ispunct", "_ispunct_l", "_isrune", "_isrune_l", "_isspace", "_isspace_l", "_isspecial", "_isspecial_l", "_isupper", "_isupper_l", "_iswalnum", "_iswalnum_l", "_iswalpha", "_iswalpha_l", "_iswascii", "_iswblank", "_iswblank_l", "_iswcntrl", "_iswcntrl_l", "_iswctype", "_iswctype_l", "_iswdigit", "_iswdigit_l", "_iswgraph", "_iswgraph_l", "_iswhexnumber", "_iswhexnumber_l", "_iswideogram", "_iswideogram_l", "_iswlower", "_iswlower_l", "_iswnumber", "_iswnumber_l", "_iswphonogram", "_iswphonogram_l", "_iswprint", "_iswprint_l", "_iswpunct", "_iswpunct_l", "_iswrune", "_iswrune_l", "_iswspace", "_iswspace_l", "_iswspecial", "_iswspecial_l", "_iswupper", "_iswupper_l", "_iswxdigit", "_iswxdigit_l", "_isxdigit", "_isxdigit_l", "_jrand48", "_kOSThermalNotificationPressureLevelName", "_killpg", "_l64a", "_labs", "_lchflags", "_lchmod", "_lcong48", "_ldiv", "_lfind", "_link_addr", "_link_ntoa", "_llabs", "_lldiv", "_localeconv", "_localeconv_l", "_localtime", "_localtime_r", "_lockf", "_login", "_login_tty", "_logout", "_logwtmp", "_lrand48", "_lsearch", "_lstatx_np", "_lutimes", "_mblen", "_mblen_l", "_mbmb", "_mbrlen", "_mbrlen_l", "_mbrrune", "_mbrtowc", "_mbrtowc_l", "_mbrune", "_mbsinit", "_mbsinit_l", "_mbsnrtowcs", "_mbsnrtowcs_l", "_mbsrtowcs", "_mbsrtowcs_l", "_mbstowcs", "_mbstowcs_l", "_mbtowc", "_mbtowc_l", "_memmem", "_memset_s", "_mergesort", "_mergesort_b", "_mkdirx_np", "_mkdtemp", "_mkdtempat_np", "_mkfifox_np", "_mkostemp", "_mkostemps", "_mkostempsat_np", "_mkpath_np", "_mkpathat_np", "_mkstemp", "_mkstemp_dprotected_np", "_mkstemps", "_mkstempsat_np", "_mktemp", "_mktime", "_monaddition", "_moncontrol", "_moncount", "_moninit", "_monitor", "_monoutput", "_monreset", "_monstartup", "_mpool_close", "_mpool_filter", "_mpool_get", "_mpool_new", "_mpool_open", "_mpool_put", "_mpool_sync", "_mrand48", "_nanosleep", "_new_printf_comp", "_new_printf_domain", "_newlocale", "_nextwctype", "_nextwctype_l", "_nftw", "_nice", "_nl_langinfo", "_nl_langinfo_l", "_nrand48", "_nvis", "_off32", "_off64", "_offtime", "_open_memstream", "_open_with_subsystem", "_open_wmemstream", "_opendev", "_opendir", "_openpty", "_openx_np", "_optarg", "_opterr", "_optind", "_optopt", "_optreset", "_pause", "_pclose", "_perror", "_popen", "_posix2time", "_posix_openpt", "_posix_spawnp", "_printf", "_printf_l", "_psignal", "_psort", "_psort_b", "_psort_r", "_ptsname", "_ptsname_r", "_putc", "_putc_unlocked", "_putchar", "_putchar_unlocked", "_putenv", "_puts", "_pututxline", "_putw", "_putwc", "_putwc_l", "_putwchar", "_putwchar_l", "_qsort", "_qsort_b", "_qsort_r", "_querylocale", "_radixsort", "_raise", "_rand", "_rand_r", "_random", "_rb_tree_count", "_rb_tree_find_node", "_rb_tree_find_node_geq", "_rb_tree_find_node_leq", "_rb_tree_init", "_rb_tree_insert_node", "_rb_tree_iterate", "_rb_tree_remove_node", "_readdir", "_readdir_r", "_readpassphrase", "_reallocf", "_realpath", "_recv", "_regcomp", "_regcomp_l", "_regerror", "_regexec", "_regfree", "_register_printf_domain_function", "_register_printf_domain_render_std", "_regncomp", "_regncomp_l", "_regnexec", "_regwcomp", "_regwcomp_l", "_regwexec", "_regwncomp", "_regwncomp_l", "_regwnexec", "_remove", "_remque", "_rewind", "_rewinddir", "_rindex", "_rpmatch", "_sbrk", "_scandir", "_scandir_b", "_scanf", "_scanf_l", "_seed48", "_seekdir", "_send", "_setbuf", "_setbuffer", "_setenv", "_sethostid", "_sethostname", "_setinvalidrune", "_setipv4sourcefilter", "_setkey", "_setlinebuf", "_setlocale", "_setlogin", "_setmode", "_setpgrp", "_setprogname", "_setrgid", "_setruid", "_setrunelocale", "_setsourcefilter", "_setstate", "_settimeofday", "_setttyent", "_setusershell", "_setutxent", "_setutxent_wtmp", "_setvbuf", "_sigaction", "_sigaddset", "_sigaltstack", "_sigblock", "_sigdelset", "_sigemptyset", "_sigfillset", "_sighold", "_sigignore", "_siginterrupt", "_sigismember", "_signal", "_sigpause", "_sigrelse", "_sigset", "_sigsetmask", "_sigvec", "_skip", "_sl_add", "_sl_find", "_sl_free", "_sl_init", "_sleep", "_snprintf", "_snprintf_l", "_snvis", "_sockatmark", "_sprintf", "_sprintf_l", "_sradixsort", "_srand", "_srand48", "_sranddev", "_srandom", "_srandomdev", "_sscanf", "_sscanf_l", "_stat_with_subsystem", "_statvfs", "_statx_np", "_stpcpy", "_stpncpy", "_strcasecmp", "_strcasecmp_l", "_strcasestr", "_strcasestr_l", "_strcat", "_strcoll", "_strcoll_l", "_strcspn", "_strdup", "_strenvisx", "_strerror", "_strerror_r", "_strfmon", "_strfmon_l", "_strftime", "_strftime_l", "_strmode", "_strncasecmp", "_strncasecmp_l", "_strncat", "_strndup", "_strnstr", "_strnunvis", "_strnunvisx", "_strnvis", "_strnvisx", "_strpbrk", "_strptime", "_strptime_l", "_strrchr", "_strsenvisx", "_strsep", "_strsignal", "_strsignal_r", "_strsnvis", "_strsnvisx", "_strspn", "_strsvis", "_strsvisx", "_strtod", "_strtod_l", "_strtof", "_strtof_l", "_strtofflags", "_strtoimax", "_strtoimax_l", "_strtok", "_strtok_r", "_strtol", "_strtol_l", "_strtold", "_strtold_l", "_strtoll", "_strtoll_l", "_strtonum", "_strtoq", "_strtoq_l", "_strtoul", "_strtoul_l", "_strtoull", "_strtoull_l", "_strtoumax", "_strtoumax_l", "_strtouq", "_strtouq_l", "_strunvis", "_strunvisx", "_strvis", "_strvisx", "_strxfrm", "_strxfrm_l", "_suboptarg", "_svis", "_swab", "_swprintf", "_swprintf_l", "_swscanf", "_swscanf_l", "_sxprintf", "_sxprintf_exec", "_sync_volume_np", "_sys_errlist", "_sys_nerr", "_sys_siglist", "_sys_signame", "_sysconf", "_sysctl", "_sysctlbyname", "_sysctlnametomib", "_system", "_tcdrain", "_tcflow", "_tcflush", "_tcgetattr", "_tcgetpgrp", "_tcgetsid", "_tcsendbreak", "_tcsetattr", "_tcsetpgrp", "_tdelete", "_telldir", "_tempnam", "_tfind", "_thread_stack_pcs", "_time", "_time2posix", "_timegm", "_timelocal", "_timeoff", "_times", "_timespec_get", "_timezone", "_timingsafe_bcmp", "_tmpfile", "_tmpnam", "_toascii", "_tolower", "_tolower_l", "_toupper", "_toupper_l", "_towctrans", "_towctrans_l", "_towlower", "_towlower_l", "_towupper", "_towupper_l", "_tre_ast_new_catenation", "_tre_ast_new_iter", "_tre_ast_new_literal", "_tre_ast_new_node", "_tre_ast_new_union", "_tre_compile", "_tre_fill_pmatch", "_tre_free", "_tre_mem_alloc_impl", "_tre_mem_destroy", "_tre_mem_new_impl", "_tre_parse", "_tre_stack_destroy", "_tre_stack_new", "_tre_stack_num_objects", "_tre_tnfa_run_backtrack", "_tre_tnfa_run_parallel", "_tsearch", "_ttyname", "_ttyname_r", "_ttyslot", "_twalk", "_tzname", "_tzset", "_tzsetwall", "_ualarm", "_ulimit", "_umaskx_np", "_uname", "_ungetc", "_ungetwc", "_ungetwc_l", "_unlockpt", "_unsetenv", "_unvis", "_uselocale", "_usleep", "_utime", "_utmpxname", "_uuid_clear", "_uuid_compare", "_uuid_copy", "_uuid_generate", "_uuid_generate_random", "_uuid_generate_time", "_uuid_is_null", "_uuid_pack", "_uuid_parse", "_uuid_unpack", "_uuid_unparse", "_uuid_unparse_lower", "_uuid_unparse_upper", "_vasprintf", "_vasprintf_l", "_vasxprintf", "_vasxprintf_exec", "_vdprintf", "_vdprintf_l", "_vdxprintf", "_vdxprintf_exec", "_verr", "_verrc", "_verrx", "_vfprintf", "_vfprintf_l", "_vfscanf", "_vfscanf_l", "_vfwprintf", "_vfwprintf_l", "_vfwscanf", "_vfwscanf_l", "_vfxprintf", "_vfxprintf_exec", "_vis", "_vprintf", "_vprintf_l", "_vscanf", "_vscanf_l", "_vsnprintf", "_vsnprintf_l", "_vsprintf", "_vsprintf_l", "_vsscanf", "_vsscanf_l", "_vswprintf", "_vswprintf_l", "_vswscanf", "_vswscanf_l", "_vsxprintf", "_vsxprintf_exec", "_vwarn", "_vwarnc", "_vwarnx", "_vwprintf", "_vwprintf_l", "_vwscanf", "_vwscanf_l", "_vxprintf", "_vxprintf_exec", "_wait", "_wait3", "_waitpid", "_warn", "_warnc", "_warnx", "_wcpcpy", "_wcpncpy", "_wcrtomb", "_wcrtomb_l", "_wcscasecmp", "_wcscasecmp_l", "_wcscat", "_wcschr", "_wcscmp", "_wcscoll", "_wcscoll_l", "_wcscpy", "_wcscspn", "_wcsdup", "_wcsftime", "_wcsftime_l", "_wcslcat", "_wcslcpy", "_wcslen", "_wcsncasecmp", "_wcsncasecmp_l", "_wcsncat", "_wcsncmp", "_wcsncpy", "_wcsnlen", "_wcsnrtombs", "_wcsnrtombs_l", "_wcspbrk", "_wcsrchr", "_wcsrtombs", "_wcsrtombs_l", "_wcsspn", "_wcsstr", "_wcstod", "_wcstod_l", "_wcstof", "_wcstof_l", "_wcstoimax", "_wcstoimax_l", "_wcstok", "_wcstol", "_wcstol_l", "_wcstold", "_wcstold_l", "_wcstoll", "_wcstoll_l", "_wcstombs", "_wcstombs_l", "_wcstoul", "_wcstoul_l", "_wcstoull", "_wcstoull_l", "_wcstoumax", "_wcstoumax_l", "_wcswidth", "_wcswidth_l", "_wcsxfrm", "_wcsxfrm_l", "_wctob", "_wctob_l", "_wctomb", "_wctomb_l", "_wctrans", "_wctrans_l", "_wctype", "_wctype_l", "_wcwidth", "_wcwidth_l", "_wmemchr", "_wmemcmp", "_wmemcpy", "_wmemmove", "_wmemset", "_wordexp", "_wordfree", "_wprintf", "_wprintf_l", "_wscanf", "_wscanf_l", "_wtmpxname", "_xprintf", "_xprintf_exec", ) def print_here_head(name): print( """\ (tee %s.s |llvm-mc -filetype=obj -triple %s -o %s.o) <> 12) print_here_head(name) print( """\ ### %s size=%x calls=%x""" % (name, size, calls) ) print_function_head(4, name) for i in range(calls): print( " bl %sx%08x\n .p2align 4" % ( "_" if args.os == "macos" else "", addrs[random.randint(0, len(addrs) - 1)], ) ) if args.os == "macos": print( " bl %s\n .p2align 4" % (libSystem_calls[random.randint(0, len(libSystem_calls) - 1)]) ) fill = size - 4 * (calls + 1) assert fill > 0 print( """\ .fill 0x%x ret""" % (fill) ) print_here_tail() def random_seed(): """Generate a seed that can easily be passed back in via --seed=STRING""" return "".join(random.choice(string.ascii_lowercase) for i in range(10)) def generate_sizes(base, megabytes): total = 0 while total < megabytes: size = random.randint(0x100, 0x10000) * 0x10 yield size total += size def generate_addrs(addr, sizes): i = 0 while i < len(sizes): yield addr addr += sizes[i] i += 1 def main(): parser = argparse.ArgumentParser( description=__doc__, epilog="""\ WRITEME """, ) parser.add_argument( "--seed", type=str, default=random_seed(), help="Seed the random number generator", ) parser.add_argument( "--size", type=int, default=None, help="Total text size to generate, in megabytes", ) parser.add_argument( "--os", type=str, default="macos", help="Target OS: macos, windows, or linux" ) global args args = parser.parse_args() triples = { "macos": "arm64-apple-macos", "linux": "aarch64-pc-linux", "windows": "aarch64-pc-windows", } global triple triple = triples.get(args.os) print( """\ ### seed=%s triple=%s """ % (args.seed, triple) ) random.seed(args.seed) base = 0x4010 megabytes = (int(args.size) if args.size else 512) * 1024 * 1024 sizes = [size for size in generate_sizes(base, megabytes)] addrs = [addr for addr in generate_addrs(base, sizes)] for i in range(len(addrs)): print_function(addrs[i], sizes[i], addrs) print_here_head("main") print( """\ ### _x%08x """ % (addrs[-1] + sizes[-1]) ) print_function_head(14 if args.os == "macos" else 4, "main") print(" ret") print_here_tail() print("wait") if __name__ == "__main__": main()