1# $OpenBSD: symbols.awk,v 1.13 2024/09/01 17:20:37 tb Exp $ 2 3# Copyright (c) 2018,2020 Theo Buehler <tb@openbsd.org> 4# 5# Permission to use, copy, modify, and distribute this software for any 6# purpose with or without fee is hereby granted, provided that the above 7# copyright notice and this permission notice appear in all copies. 8# 9# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 17# usage: awk -f symbols.awk < Symbols.list > symbols.c 18 19BEGIN { 20 printf("#include \"include_headers.c\"\n\n") 21} 22 23{ 24 symbols[$0] = $0 25 26 # Undefine aliases, so we don't accidentally leave them in Symbols.list. 27 printf("#ifdef %s\n#undef %s\n#endif\n", $0, $0) 28 29 printf("static typeof(%s) *_libre_%s;\n", $0, $0); 30} 31 32END { 33 printf("\nint\nmain(void)\n{\n") 34 printf("\tsize_t i;\n"); 35 36 printf("\tstruct {\n") 37 printf("\t\tconst char *const name;\n") 38 printf("\t\tconst void *addr;\n") 39 printf("\t\tconst void *libre_addr;\n") 40 printf("\t} symbols[] = {\n") 41 42 for (symbol in symbols) { 43 printf("\t\t{\n") 44 printf("\t\t\t.name = \"%s\",\n", symbol) 45 printf("\t\t\t.addr = &%s,\n", symbol) 46 printf("#if defined(USE_LIBRESSL_NAMESPACE)\n") 47 printf("\t\t\t.libre_addr = &_libre_%s,\n", symbol) 48 printf("#endif\n") 49 printf("\t\t},\n") 50 } 51 52 printf("\t\};\n\n") 53 54 printf("\tfor (i = 0; i < sizeof(symbols) / sizeof(symbols[0]); i++)\n") 55 printf("\t\tfprintf(stderr, \"%%s: %%p\\n\", symbols[i].name, symbols[i].addr);\n") 56 printf("\n\tprintf(\"OK\\n\");\n") 57 printf("\n\treturn 0;\n}\n") 58} 59