112 lines
2.9 KiB
Text
112 lines
2.9 KiB
Text
#
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#
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# Create tables so that we can lookup ANSI C objects and functions in
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# an object file (by reading nm output from stdin).
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#
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# This tool makes assumptions compatible with ANSI C. Unfortunately
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# this implies that we need to rely on ANSI C features.
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function sort(V, N, tmp, i, j) {
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V[-1] = ""; # Used as a sentinel before V[0].
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for (i = 1; i < N; i++)
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for (j = i; V[j - 1] > V[j]; j--) {
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tmp = V[j];
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V[j] = V[j - 1];
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V[j - 1] = tmp;
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}
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return;
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}
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BEGIN {
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ndata = ntext = 0;
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builtin["sym_function"] = "sym_func_t sym_function(const char *)";
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builtin["sym_object"] = "void *sym_object(const char *)";
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#
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builtin["printf"] = "int printf(const char *, ...)";
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builtin["sprintf"] = "int sprintf(char *, const char *, ...)";
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builtin["malloc"] = "void *malloc()";
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builtin["memcpy"] = "void *memcpy()";
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builtin["memset"] = "void *memset()";
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builtin["strcpy"] = "char *strcpy()";
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#
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builtin["sin"] = "double sin()";
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builtin["cos"] = "double cos()";
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builtin["sinf"] = "float sinf(float)";
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builtin["cosf"] = "float cosf(float)";
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builtin[""] = "";
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}
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# DATA or TEXT (ignored)
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/^[0123456789abcdef]+ [AVWw] / {
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print "/* " $1 " " $2 " " $3 " */";
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}
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# DATA
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/^[0123456789abcdef]+ [BCDGRS] / {
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if ($3 != "sym_obj" && $3 != "sym_obj_nelts" &&
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$3 != "sym_func" && $3 != "sym_func_nelts") {
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data[ndata++] = $3;
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}
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}
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# TEXT
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/^[0123456789abcdef]+ [T] / {
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if ($3 != "sym_obj" && $3 != "sym_obj_nelts" &&
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$3 != "sym_func" && $3 != "sym_func_nelts") {
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text[ntext++] = $3;
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}
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}
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END {
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sort(data, ndata);
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sort(text, ntext);
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print "#ifdef __AVR__"
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print "#define PROGMEM __attribute__((__progmem__))"
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print "#else"
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print "#define PROGMEM"
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print "#endif"
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print "#include \"loader/sym.h\"";
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print;
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for (x = 0; x < ndata; x++) {
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print "static const PROGMEM char __D"x"[] = \""data[x]"\";";
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}
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# Extern decls. Must deal with compiler builtins etc.
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print;
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for (x = 0; x < ndata; x++) {
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if (builtin[data[x]] != "")
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print builtin[data[x]] ";";
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else
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print "extern int " data[x]";";
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}
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print;
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print "const int sym_obj_nelts = " ndata ";";
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print "PROGMEM const struct sym_bol sym_obj[" ndata "] = {";
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for (x = 0; x < ndata; x++)
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print " { (const char *)__D"x", { .obj = (void *)&" data[x] " } },";
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print "};";
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print;
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for (x = 0; x < ntext; x++) {
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print "static const PROGMEM char __T"x"[] = \""text[x]"\";";
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}
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# Extern decls. Must deal with compiler builtins etc.
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print;
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for (x = 0; x < ntext; x++) {
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if (builtin[text[x]] != "")
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print builtin[text[x]] ";";
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else
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print "extern int " text[x]"();";
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}
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print;
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print "const int sym_func_nelts = " ntext ";";
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print "PROGMEM const struct sym_bol sym_func[" ntext "] = {";
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for (x = 0; x < ntext; x++)
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print " { (const char *)__T"x", { .func = (sym_func_t)&" text[x] " } },";
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print "};";
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}
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