X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=ia32rtools.git;a=blobdiff_plain;f=tools%2Fprotoparse.h;h=3d70d8658dfc1988e14a659bf851c38ffa6b7dd1;hp=01f2e092aef535b49c3c8131083713a7ecdfb7d6;hb=61e29183dd00fa64584fa8787008b21a1c70b8ce;hpb=64c59faf96cd35319a5c7a11c5f47ee684b27ae2

diff --git a/tools/protoparse.h b/tools/protoparse.h
index 01f2e09..3d70d86 100644
--- a/tools/protoparse.h
+++ b/tools/protoparse.h
@@ -1,97 +1,153 @@
+/*
+ * ia32rtools
+ * (C) notaz, 2013,2014
+ *
+ * This work is licensed under the terms of 3-clause BSD license.
+ * See COPYING file in the top-level directory.
+ */
 
 struct parsed_proto;
 
+struct parsed_type {
+	char *name;
+	unsigned int is_array:1;
+	unsigned int is_ptr:1;
+	unsigned int is_struct:1; // split for args
+	unsigned int is_retreg:1; // register to return to caller
+	unsigned int is_va_list:1;
+};
+
 struct parsed_proto_arg {
 	char *reg;
-	char *type;
+	struct parsed_type type;
 	struct parsed_proto *fptr;
 	void *datap;
 };
 
 struct parsed_proto {
 	char name[256];
-	char *ret_type;
+	union {
+		struct parsed_type ret_type;
+		struct parsed_type type;
+	};
 	struct parsed_proto_arg arg[16];
 	int argc;
 	int argc_stack;
 	int argc_reg;
 	unsigned int is_func:1;
 	unsigned int is_stdcall:1;
+	unsigned int is_fastcall:1;
+	unsigned int is_vararg:1;     // vararg func
 	unsigned int is_fptr:1;
-	unsigned int is_array:1;
+	unsigned int is_noreturn:1;
+	unsigned int is_unresolved:1;
+	unsigned int is_userstack:1;
+	unsigned int is_include:1;    // not from top-level header
+	unsigned int is_osinc:1;      // OS/system library func
+	unsigned int is_arg:1;        // declared in some func arg
+	unsigned int has_structarg:1;
+	unsigned int has_retreg:1;
 };
 
 static const char *hdrfn;
 static int hdrfline = 0;
 
-static int find_protostr(char *dst, size_t dlen, FILE *fhdr,
-	const char *fname, const char *sym_)
+static void pp_copy_arg(struct parsed_proto_arg *d,
+	const struct parsed_proto_arg *s);
+
+static int b_pp_c_handler(char *proto, const char *fname,
+	int is_include, int is_osinc);
+
+static int do_protostrs(FILE *fhdr, const char *fname, int is_include)
 {
-	const char *sym = sym_;
 	const char *finc_name;
+	const char *hdrfn_saved;
+	char protostr[256];
+	char path[256];
+	char fname_inc[256];
+	int is_osinc;
 	FILE *finc;
-	int symlen;
 	int line = 0;
 	int ret;
 	char *p;
 
-	if (sym[0] == '_' && strncmp(fname, "stdc", 4) == 0)
-		sym++;
-	symlen = strlen(sym);
+	hdrfn_saved = hdrfn;
+	hdrfn = fname;
 
-	rewind(fhdr);
+	is_osinc = strstr(fname, "stdc.hlist")
+		 || strstr(fname, "win32.hlist");
 
-	while (fgets(dst, dlen, fhdr))
+	while (fgets(protostr, sizeof(protostr), fhdr))
 	{
 		line++;
-		if (strncmp(dst, "//#include ", 11) == 0) {
-			finc_name = dst + 11;
+		if (strncmp(protostr, "//#include ", 11) == 0) {
+			finc_name = protostr + 11;
 			p = strpbrk(finc_name, "\r\n ");
 			if (p != NULL)
 				*p = 0;
 
-			finc = fopen(finc_name, "r");
+			path[0] = 0;
+			p = strrchr(hdrfn_saved, '/');
+			if (p) {
+				memcpy(path, hdrfn_saved,
+					p - hdrfn_saved + 1);
+				path[p - hdrfn_saved + 1] = 0;
+			}
+			snprintf(fname_inc, sizeof(fname_inc), "%s%s", 
+				path, finc_name);
+			finc = fopen(fname_inc, "r");
 			if (finc == NULL) {
 				printf("%s:%d: can't open '%s'\n",
-					fname, line, finc_name);
+					fname_inc, line, finc_name);
 				continue;
 			}
-			ret = find_protostr(dst, dlen, finc,
-				finc_name, sym_);
+			ret = do_protostrs(finc, finc_name, 1);
 			fclose(finc);
-			if (ret == 0)
+			if (ret < 0)
 				break;
 			continue;
 		}
-		if (strncmp(sskip(dst), "//", 2) == 0)
+		if (strncmp(sskip(protostr), "//", 2) == 0)
+			continue;
+
+		p = protostr + strlen(protostr);
+		for (p--; p >= protostr && my_isblank(*p); --p)
+			*p = 0;
+		if (p < protostr)
 			continue;
 
-		p = strstr(dst, sym);
-		if (p != NULL && p > dst
-		   && (my_isblank(p[-1]) || my_issep(p[-1]))
-		   && (my_isblank(p[symlen]) || my_issep(p[symlen])))
+		hdrfline = line;
+
+		ret = b_pp_c_handler(protostr, hdrfn, is_include,
+			is_osinc);
+		if (ret < 0)
 			break;
 	}
-	hdrfline = line;
 
-	if (feof(fhdr))
-		return -1;
+	hdrfn = hdrfn_saved;
 
-	p = dst + strlen(dst);
-	for (p--; p > dst && my_isblank(*p); --p)
-		*p = 0;
+	if (feof(fhdr))
+		return 0;
 
-	return 0;
+	return -1;
 }
 
-static int get_regparm(char *dst, size_t dlen, char *p)
+static int get_regparm(char *dst, size_t dlen, char *p, int *retreg)
 {
-	int i, o;
+	int i = 0, o;
+
+	*retreg = 0;
 
 	if (*p != '<')
 		return 0;
 
-	for (o = 0, i = 1; o < dlen; i++) {
+	i++;
+	if (p[i] == '*') {
+		*retreg = 1;
+		i++;
+	}
+
+	for (o = 0; o < dlen; i++) {
 		if (p[i] == 0)
 			return 0;
 		if (p[i] == '>')
@@ -107,37 +163,68 @@ static const char *known_type_mod[] = {
 	"const",
 	"signed",
 	"unsigned",
+	"struct",
+	"enum",
+	"CONST",
+	"volatile",
 };
 
-static const char *known_types[] = {
-	"void *",
-	"char *",
-	"FILE *",
-	"int *",
-	"__int8 *",
-	"__int16 *",
-	"char",
-	"__int8",
-	"__int16",
-	"__int32",
-	"int",
-	"bool",
-	"void",
-	"BYTE",
-	"WORD",
-	"BOOL",
-	"DWORD",
-	"_DWORD",
-	"HMODULE",
+static const char *known_ptr_types[] = {
+	"FARPROC",
+	"WNDPROC",
+	"LINECALLBACK",
+	"HACCEL",
 	"HANDLE",
+	"HBITMAP",
+	"HCALL",
+	"HCURSOR",
+	"HDC",
+	"HFONT",
+	"HGDIOBJ",
+	"HGLOBAL",
+	"HICON",
+	"HINSTANCE",
+	"HIMC", // DWORD in mingw, ptr in wine..
+	"HLINE",
+	"HLINEAPP",
+	"HLOCAL",
+	"HMODULE",
+	"HPALETTE",
+	"HRGN",
+	"HRSRC",
+	"HKEY",
+	"HMENU",
+	"HWAVEOUT",
 	"HWND",
-	"LANGID",
-	"LPCSTR",
-	"size_t",
+	"PBYTE",
+	"PCRITICAL_SECTION",
+	"PDWORD",
+	"PFILETIME",
+	"PLARGE_INTEGER",
+	"PHKEY",
+	"PLONG",
+	"PMEMORY_BASIC_INFORMATION",
+	"PUINT",
+	"PVOID",
+	"PCVOID",
+	"PWORD",
+	"DLGPROC",
+	"TIMERPROC",
+	"WNDENUMPROC",
+	"va_list",
+	"__VALIST",
+};
+
+static const char *ignored_keywords[] = {
+	"extern",
+	"WINBASEAPI",
+	"WINUSERAPI",
+	"WINGDIAPI",
+	"WINADVAPI",
 };
 
 // returns ptr to char after type ends
-static const char *typecmp(const char *n, const char *t)
+static int typecmp(const char *n, const char *t)
 {
 	for (; *t != 0; n++, t++) {
 		while (n[0] == ' ' && (n[1] == ' ' || n[1] == '*'))
@@ -145,24 +232,23 @@ static const char *typecmp(const char *n, const char *t)
 		while (t[0] == ' ' && (t[1] == ' ' || t[1] == '*'))
 			t++;
 		if (*n != *t)
-			return NULL;
+			return *n - *t;
 	}
 
-	return n;
+	return 0;
 }
 
-static char *check_type(const char *name, int *len_out)
+static const char *skip_type_mod(const char *n)
 {
-	const char *n = name, *n1;
 	int len;
 	int i;
 
-	*len_out = 0;
-
 	for (i = 0; i < ARRAY_SIZE(known_type_mod); i++) {
 		len = strlen(known_type_mod[i]);
 		if (strncmp(n, known_type_mod[i], len) != 0)
 			continue;
+		if (!my_isblank(n[len]))
+			continue;
 
 		n += len;
 		while (my_isblank(*n))
@@ -170,16 +256,52 @@ static char *check_type(const char *name, int *len_out)
 		i = 0;
 	}
 
-	for (i = 0; i < ARRAY_SIZE(known_types); i++) {
-		n1 = typecmp(n, known_types[i]);
-		if (n1 == NULL)
+	return n;
+}
+
+static int check_type(const char *name, struct parsed_type *type)
+{
+	const char *n, *n1;
+	int ret = -1;
+	int i;
+
+	n = skip_type_mod(name);
+
+	for (i = 0; i < ARRAY_SIZE(known_ptr_types); i++) {
+		if (typecmp(n, known_ptr_types[i]))
 			continue;
 
-		*len_out = n1 - name;
-		return strndup(name, *len_out);
+		type->is_ptr = 1;
+		break;
+	}
+
+	if (n[0] == 'L' && n[1] == 'P' && strncmp(n, "LPARAM", 6))
+		type->is_ptr = 1;
+
+	// assume single word
+	while (!my_isblank(*n) && !my_issep(*n))
+		n++;
+
+	while (1) {
+		n1 = n;
+		while (my_isblank(*n))
+			n++;
+		if (*n == '*') {
+			type->is_ptr = 1;
+			n++;
+			continue;
+		}
+		break;
 	}
 
-	return NULL;
+	ret = n1 - name;
+	type->name = strndup(name, ret);
+	if (IS(type->name, "__VALIST") || IS(type->name, "va_list"))
+		type->is_va_list = 1;
+	if (IS(type->name, "VOID"))
+		memcpy(type->name, "void", 4);
+
+	return ret;
 }
 
 /* args are always expanded to 32bit */
@@ -201,17 +323,25 @@ static const char *map_reg(const char *reg)
 	return reg;
 }
 
+static int check_struct_arg(struct parsed_proto_arg *arg)
+{
+	if (IS(arg->type.name, "POINT"))
+		return 2 - 1;
+
+	return 0;
+}
+
 static int parse_protostr(char *protostr, struct parsed_proto *pp)
 {
 	struct parsed_proto_arg *arg;
 	char regparm[16];
 	char buf[256];
 	char cconv[32];
-	char *kt;
+	int is_retreg;
 	int xarg = 0;
 	char *p, *p1;
+	int i, l;
 	int ret;
-	int i;
 
 	p = sskip(protostr);
 	if (p[0] == '/' && p[1] == '/') {
@@ -226,25 +356,35 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 			p1[0] = p1[1] = ' ';
 	}
 
-	if (strncmp(p, "extern ", 7) == 0)
-		p = sskip(p + 7);
-	if (strncmp(p, "WINBASEAPI ", 11) == 0)
-		p = sskip(p + 11);
+	if (!strncmp(p, "DECLSPEC_NORETURN ", 18)) {
+		pp->is_noreturn = 1;
+		p = sskip(p + 18);
+	}
+
+	for (i = 0; i < ARRAY_SIZE(ignored_keywords); i++) {
+		l = strlen(ignored_keywords[i]);
+		if (!strncmp(p, ignored_keywords[i], l) && my_isblank(p[l]))
+			p = sskip(p + l + 1);
+	}
 
-	kt = check_type(p, &ret);
-	if (kt == NULL) {
-		printf("%s:%d:%ld: unhandled return in '%s'\n",
+	ret = check_type(p, &pp->ret_type);
+	if (ret <= 0) {
+		printf("%s:%d:%zd: unhandled return in '%s'\n",
 			hdrfn, hdrfline, (p - protostr) + 1, protostr);
 		return -1;
 	}
-	pp->ret_type = kt;
 	p = sskip(p + ret);
 
+	if (!strncmp(p, "noreturn ", 9)) {
+		pp->is_noreturn = 1;
+		p = sskip(p + 9);
+	}
+
 	if (!strchr(p, ')')) {
 		p = next_idt(buf, sizeof(buf), p);
 		p = sskip(p);
 		if (buf[0] == 0) {
-			printf("%s:%d:%ld: var name missing\n",
+			printf("%s:%d:%zd: var name missing\n",
 				hdrfn, hdrfline, (p - protostr) + 1);
 			return -1;
 		}
@@ -253,7 +393,7 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 		p1 = strchr(p, ']');
 		if (p1 != NULL) {
 			p = p1 + 1;
-			pp->is_array = 1;
+			pp->ret_type.is_array = 1;
 		}
 		return p - protostr;
 	}
@@ -268,7 +408,7 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 	p = next_word(cconv, sizeof(cconv), p);
 	p = sskip(p);
 	if (cconv[0] == 0) {
-		printf("%s:%d:%ld: cconv missing\n",
+		printf("%s:%d:%zd: cconv missing\n",
 			hdrfn, hdrfline, (p - protostr) + 1);
 		return -1;
 	}
@@ -276,46 +416,56 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 		pp->is_stdcall = 0;
 	else if (IS(cconv, "__stdcall"))
 		pp->is_stdcall = 1;
-	else if (IS(cconv, "__fastcall"))
-		pp->is_stdcall = 1;
+	else if (IS(cconv, "__fastcall")) {
+		pp->is_fastcall = 1;
+		pp->is_stdcall = 1; // sort of..
+	}
 	else if (IS(cconv, "__thiscall"))
 		pp->is_stdcall = 1;
 	else if (IS(cconv, "__userpurge"))
-		pp->is_stdcall = 1; // in all cases seen..
+		pp->is_stdcall = 1; // IDA
 	else if (IS(cconv, "__usercall"))
-		pp->is_stdcall = 0; // ..or is it?
+		pp->is_stdcall = 0; // IDA
+	else if (IS(cconv, "__userstack")) {
+		pp->is_stdcall = 0; // custom
+		pp->is_userstack = 1;
+	}
 	else if (IS(cconv, "WINAPI"))
 		pp->is_stdcall = 1;
 	else {
-		printf("%s:%d:%ld: unhandled cconv: '%s'\n",
+		printf("%s:%d:%zd: unhandled cconv: '%s'\n",
 			hdrfn, hdrfline, (p - protostr) + 1, cconv);
 		return -1;
 	}
 
 	if (pp->is_fptr) {
 		if (*p != '*') {
-			printf("%s:%d:%ld: '*' expected\n",
+			printf("%s:%d:%zd: '*' expected\n",
 				hdrfn, hdrfline, (p - protostr) + 1);
 			return -1;
 		}
-		p = sskip(p + 1);
+		p++;
+		// XXX: skipping extra asterisks, for now
+		while (*p == '*')
+			p++;
+		p = sskip(p);
 	}
 
 	p = next_idt(buf, sizeof(buf), p);
 	p = sskip(p);
 	if (buf[0] == 0) {
-		printf("%s:%d:%ld: func name missing\n",
-			hdrfn, hdrfline, (p - protostr) + 1);
-		return -1;
+		//printf("%s:%d:%zd: func name missing\n",
+		//	hdrfn, hdrfline, (p - protostr) + 1);
+		//return -1;
 	}
 	strcpy(pp->name, buf);
 
-	ret = get_regparm(regparm, sizeof(regparm), p);
+	ret = get_regparm(regparm, sizeof(regparm), p, &is_retreg);
 	if (ret > 0) {
 		if (!IS(regparm, "eax") && !IS(regparm, "ax")
-		 && !IS(regparm, "al"))
+		 && !IS(regparm, "al") && !IS(regparm, "edx:eax"))
 		{
-			printf("%s:%d:%ld: bad regparm: %s\n",
+			printf("%s:%d:%zd: bad regparm: %s\n",
 				hdrfn, hdrfline, (p - protostr) + 1, regparm);
 			return -1;
 		}
@@ -324,8 +474,19 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 	}
 
 	if (pp->is_fptr) {
+		if (*p == '[') {
+			// not really ret_type is array, but ohwell
+			pp->ret_type.is_array = 1;
+			p = strchr(p + 1, ']');
+			if (p == NULL) {
+				printf("%s:%d:%zd: ']' expected\n",
+				 hdrfn, hdrfline, (p - protostr) + 1);
+				return -1;
+			}
+			p = sskip(p + 1);
+		}
 		if (*p != ')') {
-			printf("%s:%d:%ld: ')' expected\n",
+			printf("%s:%d:%zd: ')' expected\n",
 				hdrfn, hdrfline, (p - protostr) + 1);
 			return -1;
 		}
@@ -333,7 +494,7 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 	}
 
 	if (*p != '(') {
-		printf("%s:%d:%ld: '(' expected, got '%c'\n",
+		printf("%s:%d:%zd: '(' expected, got '%c'\n",
 				hdrfn, hdrfline, (p - protostr) + 1, *p);
 		return -1;
 	}
@@ -351,20 +512,37 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 			p++;
 			break;
 		}
-		if (*p == ',')
+		if (xarg > 0) {
+			if (*p != ',') {
+				printf("%s:%d:%zd: ',' expected\n",
+				 hdrfn, hdrfline, (p - protostr) + 1);
+				return -1;
+			}
 			p = sskip(p + 1);
+		}
+
+		if (!strncmp(p, "...", 3)) {
+			pp->is_vararg = 1;
+			p = sskip(p + 3);
+			if (*p == ')') {
+				p++;
+				break;
+			}
+			printf("%s:%d:%zd: ')' expected\n",
+				hdrfn, hdrfline, (p - protostr) + 1);
+			return -1;
+		}
 
 		arg = &pp->arg[xarg];
 		xarg++;
 
 		p1 = p;
-		kt = check_type(p, &ret);
-		if (kt == NULL) {
-			printf("%s:%d:%ld: unhandled type for arg%d\n",
+		ret = check_type(p, &arg->type);
+		if (ret <= 0) {
+			printf("%s:%d:%zd: unhandled type for arg%d\n",
 				hdrfn, hdrfline, (p - protostr) + 1, xarg);
 			return -1;
 		}
-		arg->type = kt;
 		p = sskip(p + ret);
 
 		if (*p == '(') {
@@ -372,12 +550,17 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 			arg->fptr = calloc(1, sizeof(*arg->fptr));
 			ret = parse_protostr(p1, arg->fptr);
 			if (ret < 0) {
-				printf("%s:%d:%ld: funcarg parse failed\n",
+				printf("%s:%d:%zd: funcarg parse failed\n",
 					hdrfn, hdrfline, p1 - protostr);
 				return -1;
 			}
+			arg->fptr->is_arg = 1;
+			// we don't use actual names right now..
+			snprintf(arg->fptr->name,
+				sizeof(arg->fptr->name), "a%d", xarg);
 			// we'll treat it as void * for non-calls
-			arg->type = "void *";
+			arg->type.name = strdup("void *");
+			arg->type.is_ptr = 1;
 
 			p = p1 + ret;
 		}
@@ -386,19 +569,43 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 		p = sskip(p);
 #if 0
 		if (buf[0] == 0) {
-			printf("%s:%d:%ld: idt missing for arg%d\n",
+			printf("%s:%d:%zd: idt missing for arg%d\n",
 				hdrfn, hdrfline, (p - protostr) + 1, xarg);
 			return -1;
 		}
 #endif
 		arg->reg = NULL;
 
-		ret = get_regparm(regparm, sizeof(regparm), p);
+		ret = get_regparm(regparm, sizeof(regparm), p, &is_retreg);
 		if (ret > 0) {
 			p += ret;
 			p = sskip(p);
 
 			arg->reg = strdup(map_reg(regparm));
+			arg->type.is_retreg = is_retreg;
+			pp->has_retreg |= is_retreg;
+		}
+
+		if (strstr(arg->type.name, "int64")
+		    || IS(arg->type.name, "double"))
+		{
+			// hack..
+			free(arg->type.name);
+			arg->type.name = strdup("int");
+			pp_copy_arg(&pp->arg[xarg], arg);
+			xarg++;
+		}
+
+		ret = check_struct_arg(arg);
+		if (ret > 0) {
+			pp->has_structarg = 1;
+			arg->type.is_struct = 1;
+			free(arg->type.name);
+			arg->type.name = strdup("int");
+			for (l = 0; l < ret; l++) {
+				pp_copy_arg(&pp->arg[xarg], arg);
+				xarg++;
+			}
 		}
 	}
 
@@ -427,37 +634,200 @@ static int parse_protostr(char *protostr, struct parsed_proto *pp)
 			pp->argc_reg++;
 	}
 
+	if (pp->argc == 1 && pp->arg[0].reg != NULL
+	    && IS(pp->arg[0].reg, "ecx"))
+	{
+		pp->is_fastcall = 1;
+	}
+	else if (pp->argc_reg == 2
+	  && pp->arg[0].reg != NULL && IS(pp->arg[0].reg, "ecx")
+	  && pp->arg[1].reg != NULL && IS(pp->arg[1].reg, "edx"))
+	{
+		pp->is_fastcall = 1;
+	}
+
+	if (pp->is_vararg && (pp->is_stdcall || pp->is_fastcall)) {
+		printf("%s:%d: vararg %s?\n", hdrfn, hdrfline, cconv);
+		return -1;
+	}
+
 	return p - protostr;
 }
 
-static int proto_parse(FILE *fhdr, const char *sym, struct parsed_proto *pp)
+static int pp_name_cmp(const void *p1, const void *p2)
+{
+	const struct parsed_proto *pp1 = p1, *pp2 = p2;
+	return strcmp(pp1->name, pp2->name);
+}
+
+static struct parsed_proto *pp_cache;
+static int pp_cache_size;
+static int pp_cache_alloc;
+
+static int b_pp_c_handler(char *proto, const char *fname,
+	int is_include, int is_osinc)
 {
-	char protostr[256];
 	int ret;
 
-	memset(pp, 0, sizeof(*pp));
+	if (pp_cache_size >= pp_cache_alloc) {
+		pp_cache_alloc = pp_cache_alloc * 2 + 64;
+		pp_cache = realloc(pp_cache, pp_cache_alloc
+				* sizeof(pp_cache[0]));
+		my_assert_not(pp_cache, NULL);
+		memset(pp_cache + pp_cache_size, 0,
+			(pp_cache_alloc - pp_cache_size)
+			 * sizeof(pp_cache[0]));
+	}
+
+	ret = parse_protostr(proto, &pp_cache[pp_cache_size]);
+	if (ret < 0)
+		return -1;
 
-	ret = find_protostr(protostr, sizeof(protostr), fhdr, hdrfn, sym);
-	if (ret != 0) {
+	pp_cache[pp_cache_size].is_include = is_include;
+	pp_cache[pp_cache_size].is_osinc = is_osinc;
+	pp_cache_size++;
+	return 0;
+}
+
+static void build_pp_cache(FILE *fhdr)
+{
+	long pos;
+	int ret;
+
+	pos = ftell(fhdr);
+	rewind(fhdr);
+
+	ret = do_protostrs(fhdr, hdrfn, 0);
+	if (ret < 0)
+		exit(1);
+
+	qsort(pp_cache, pp_cache_size, sizeof(pp_cache[0]), pp_name_cmp);
+	fseek(fhdr, pos, SEEK_SET);
+}
+
+static const struct parsed_proto *proto_parse(FILE *fhdr, const char *sym,
+	int quiet)
+{
+	const struct parsed_proto *pp_ret;
+	struct parsed_proto pp_search;
+	char *p;
+
+	if (pp_cache == NULL)
+		build_pp_cache(fhdr);
+
+	if (sym[0] == '_') // && strncmp(fname, "stdc", 4) == 0)
+		sym++;
+
+	strcpy(pp_search.name, sym);
+	p = strchr(pp_search.name, '@');
+	if (p != NULL)
+		*p = 0;
+
+	pp_ret = bsearch(&pp_search, pp_cache, pp_cache_size,
+			sizeof(pp_cache[0]), pp_name_cmp);
+	if (pp_ret == NULL && !quiet)
 		printf("%s: sym '%s' is missing\n", hdrfn, sym);
-		return ret;
+
+	return pp_ret;
+}
+
+static void pp_copy_arg(struct parsed_proto_arg *d,
+	const struct parsed_proto_arg *s)
+{
+	memcpy(d, s, sizeof(*d));
+
+	if (s->reg != NULL) {
+		d->reg = strdup(s->reg);
+		my_assert_not(d->reg, NULL);
+	}
+	if (s->type.name != NULL) {
+		d->type.name = strdup(s->type.name);
+		my_assert_not(d->type.name, NULL);
 	}
+	if (s->fptr != NULL) {
+		d->fptr = malloc(sizeof(*d->fptr));
+		my_assert_not(d->fptr, NULL);
+		memcpy(d->fptr, s->fptr, sizeof(*d->fptr));
+	}
+}
+
+struct parsed_proto *proto_clone(const struct parsed_proto *pp_c)
+{
+	struct parsed_proto *pp;
+	int i;
+
+	pp = malloc(sizeof(*pp));
+	my_assert_not(pp, NULL);
+	memcpy(pp, pp_c, sizeof(*pp)); // lazy..
 
-	return parse_protostr(protostr, pp) < 0 ? -1 : 0;
+	// do the actual deep copy..
+	for (i = 0; i < pp_c->argc; i++)
+		pp_copy_arg(&pp->arg[i], &pp_c->arg[i]);
+	if (pp_c->ret_type.name != NULL)
+		pp->ret_type.name = strdup(pp_c->ret_type.name);
+
+	return pp;
+}
+
+
+static inline int pp_cmp_func(const struct parsed_proto *pp1,
+  const struct parsed_proto *pp2)
+{
+  int i;
+
+  if (pp1->argc != pp2->argc || pp1->argc_reg != pp2->argc_reg)
+    return 1;
+  else {
+    for (i = 0; i < pp1->argc; i++) {
+      if ((pp1->arg[i].reg != NULL) != (pp2->arg[i].reg != NULL))
+        return 1;
+
+      if ((pp1->arg[i].reg != NULL)
+        && !IS(pp1->arg[i].reg, pp2->arg[i].reg))
+      {
+        return 1;
+      }
+    }
+  }
+
+  return 0;
+}
+
+static inline void pp_print(char *buf, size_t buf_size,
+  const struct parsed_proto *pp)
+{
+  size_t l;
+  int i;
+
+  snprintf(buf, buf_size, "%s %s(", pp->ret_type.name, pp->name);
+  l = strlen(buf);
+
+  for (i = 0; i < pp->argc_reg; i++) {
+    snprintf(buf + l, buf_size - l, "%s%s",
+      i == 0 ? "" : ", ", pp->arg[i].reg);
+    l = strlen(buf);
+  }
+  if (pp->argc_stack > 0) {
+    snprintf(buf + l, buf_size - l, "%s{%d stack}",
+      i == 0 ? "" : ", ", pp->argc_stack);
+    l = strlen(buf);
+  }
+  snprintf(buf + l, buf_size - l, ")");
 }
 
-static void proto_release(struct parsed_proto *pp)
+static inline void proto_release(struct parsed_proto *pp)
 {
 	int i;
 
 	for (i = 0; i < pp->argc; i++) {
 		if (pp->arg[i].reg != NULL)
 			free(pp->arg[i].reg);
-		if (pp->arg[i].type != NULL)
-			free(pp->arg[i].type);
+		if (pp->arg[i].type.name != NULL)
+			free(pp->arg[i].type.name);
 		if (pp->arg[i].fptr != NULL)
 			free(pp->arg[i].fptr);
 	}
-	if (pp->ret_type != NULL)
-		free(pp->ret_type);
+	if (pp->ret_type.name != NULL)
+		free(pp->ret_type.name);
+	free(pp);
 }