[ia32rtools.git] / tools / protoparse.h


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
};

struct parsed_proto_arg {
	char *reg;
	struct parsed_type type;
	struct parsed_proto *fptr;
	void *datap;
};

struct parsed_proto {
	char name[256];
	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;
	unsigned int is_fptr:1;
	unsigned int is_noreturn:1;
	unsigned int is_unresolved:1;
	unsigned int has_structarg:1;
};

static const char *hdrfn;
static int hdrfline = 0;

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);

static int do_protostrs(FILE *fhdr, const char *fname)
{
	const char *finc_name;
	const char *hdrfn_saved;
	char protostr[256];
	char path[256];
	char fname_inc[256];
	FILE *finc;
	int line = 0;
	int ret;
	char *p;

	hdrfn_saved = hdrfn;
	hdrfn = fname;

	while (fgets(protostr, sizeof(protostr), fhdr))
	{
		line++;
		if (strncmp(protostr, "//#include ", 11) == 0) {
			finc_name = protostr + 11;
			p = strpbrk(finc_name, "\r\n ");
			if (p != NULL)
				*p = 0;

			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_inc, line, finc_name);
				continue;
			}
			ret = do_protostrs(finc, finc_name);
			fclose(finc);
			if (ret < 0)
				break;
			continue;
		}
		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;

		hdrfline = line;

		ret = b_pp_c_handler(protostr, hdrfn);
		if (ret < 0)
			break;
	}

	hdrfn = hdrfn_saved;

	if (feof(fhdr))
		return 0;

	return -1;
}

static int get_regparm(char *dst, size_t dlen, char *p)
{
	int i, o;

	if (*p != '<')
		return 0;

	for (o = 0, i = 1; o < dlen; i++) {
		if (p[i] == 0)
			return 0;
		if (p[i] == '>')
			break;
		dst[o++] = p[i];
	}
	dst[o] = 0;
	return i + 1;
}

// hmh..
static const char *known_type_mod[] = {
	"const",
	"signed",
	"unsigned",
	"struct",
	"enum",
	"CONST",
	"volatile",
};

static const char *known_ptr_types[] = {
	"FARPROC",
	"WNDPROC",
	"HACCEL",
	"HANDLE",
	"HBITMAP",
	"HCURSOR",
	"HDC",
	"HFONT",
	"HGDIOBJ",
	"HGLOBAL",
	"HICON",
	"HINSTANCE",
	//"HIMC", // DWORD
	"HMODULE",
	"HPALETTE",
	"HRGN",
	"HRSRC",
	"HKEY",
	"HMENU",
	"HWND",
	"PCRITICAL_SECTION",
	"PDWORD",
	"PFILETIME",
	"PHKEY",
	"PLONG",
	"PMEMORY_BASIC_INFORMATION",
	"PUINT",
	"PVOID",
	"PCVOID",
	"DLGPROC",
	"TIMERPROC",
	"WNDENUMPROC",
	"va_list",
	"__VALIST",
};

static const char *ignored_keywords[] = {
	"extern",
	"WINBASEAPI",
	"WINUSERAPI",
	"WINGDIAPI",
	"WINADVAPI",
};

// returns ptr to char after type ends
static int typecmp(const char *n, const char *t)
{
	for (; *t != 0; n++, t++) {
		while (n[0] == ' ' && (n[1] == ' ' || n[1] == '*'))
			n++;
		while (t[0] == ' ' && (t[1] == ' ' || t[1] == '*'))
			t++;
		if (*n != *t)
			return *n - *t;
	}

	return 0;
}

static const char *skip_type_mod(const char *n)
{
	int len;
	int i;

	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))
			n++;
		i = 0;
	}

	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;

		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;
	}

	ret = n1 - name;
	type->name = strndup(name, ret);
	if (IS(type->name, "VOID"))
		memcpy(type->name, "void", 4);

	return ret;
}

/* args are always expanded to 32bit */
static const char *map_reg(const char *reg)
{
	const char *regs_f[] = { "eax", "ebx", "ecx", "edx", "esi", "edi" };
	const char *regs_w[] = { "ax",  "bx",  "cx",  "dx",  "si",  "di" };
	const char *regs_b[] = { "al",  "bl",  "cl",  "dl" };
	int i;

	for (i = 0; i < ARRAY_SIZE(regs_w); i++)
		if (IS(reg, regs_w[i]))
			return regs_f[i];

	for (i = 0; i < ARRAY_SIZE(regs_b); i++)
		if (IS(reg, regs_b[i]))
			return regs_f[i];

	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];
	int xarg = 0;
	char *p, *p1;
	int i, l;
	int ret;

	p = sskip(protostr);
	if (p[0] == '/' && p[1] == '/') {
		printf("%s:%d: commented out?\n", hdrfn, hdrfline);
		p = sskip(p + 2);
	}

	// strip unneeded stuff
	for (p1 = p; p1[0] != 0 && p1[1] != 0; p1++) {
		if ((p1[0] == '/' && p1[1] == '*')
		 || (p1[0] == '*' && p1[1] == '/'))
			p1[0] = p1[1] = ' ';
	}

	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);
	}

	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;
	}
	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:%zd: var name missing\n",
				hdrfn, hdrfline, (p - protostr) + 1);
			return -1;
		}
		strcpy(pp->name, buf);

		p1 = strchr(p, ']');
		if (p1 != NULL) {
			p = p1 + 1;
			pp->ret_type.is_array = 1;
		}
		return p - protostr;
	}

	pp->is_func = 1;

	if (*p == '(') {
		pp->is_fptr = 1;
		p = sskip(p + 1);
	}

	p = next_word(cconv, sizeof(cconv), p);
	p = sskip(p);
	if (cconv[0] == 0) {
		printf("%s:%d:%zd: cconv missing\n",
			hdrfn, hdrfline, (p - protostr) + 1);
		return -1;
	}
	if      (IS(cconv, "__cdecl"))
		pp->is_stdcall = 0;
	else if (IS(cconv, "__stdcall"))
		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; // IDA
	else if (IS(cconv, "__usercall"))
		pp->is_stdcall = 0; // IDA
	else if (IS(cconv, "WINAPI"))
		pp->is_stdcall = 1;
	else {
		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:%zd: '*' expected\n",
				hdrfn, hdrfline, (p - protostr) + 1);
			return -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:%zd: func name missing\n",
		//	hdrfn, hdrfline, (p - protostr) + 1);
		//return -1;
	}
	strcpy(pp->name, buf);

	ret = get_regparm(regparm, sizeof(regparm), p);
	if (ret > 0) {
		if (!IS(regparm, "eax") && !IS(regparm, "ax")
		 && !IS(regparm, "al") && !IS(regparm, "edx:eax"))
		{
			printf("%s:%d:%zd: bad regparm: %s\n",
				hdrfn, hdrfline, (p - protostr) + 1, regparm);
			return -1;
		}
		p += ret;
		p = sskip(p);
	}

	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:%zd: ')' expected\n",
				hdrfn, hdrfline, (p - protostr) + 1);
			return -1;
		}
		p = sskip(p + 1);
	}

	if (*p != '(') {
		printf("%s:%d:%zd: '(' expected, got '%c'\n",
				hdrfn, hdrfline, (p - protostr) + 1, *p);
		return -1;
	}
	p++;

	// check for x(void)
	p = sskip(p);
	if ((!strncmp(p, "void", 4) || !strncmp(p, "VOID", 4))
	   && *sskip(p + 4) == ')')
		p += 4;

	while (1) {
		p = sskip(p);
		if (*p == ')') {
			p++;
			break;
		}
		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;
		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;
		}
		p = sskip(p + ret);

		if (*p == '(') {
			// func ptr
			arg->fptr = calloc(1, sizeof(*arg->fptr));
			ret = parse_protostr(p1, arg->fptr);
			if (ret < 0) {
				printf("%s:%d:%zd: funcarg parse failed\n",
					hdrfn, hdrfline, p1 - protostr);
				return -1;
			}
			// we'll treat it as void * for non-calls
			arg->type.name = strdup("void *");
			arg->type.is_ptr = 1;

			p = p1 + ret;
		}

		p = next_idt(buf, sizeof(buf), p);
		p = sskip(p);
#if 0
		if (buf[0] == 0) {
			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);
		if (ret > 0) {
			p += ret;
			p = sskip(p);

			arg->reg = strdup(map_reg(regparm));
		}

		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++;
			}
		}
	}

	if (xarg > 0 && (IS(cconv, "__fastcall") || IS(cconv, "__thiscall"))) {
		if (pp->arg[0].reg != NULL) {
			printf("%s:%d: %s with arg1 spec %s?\n",
				hdrfn, hdrfline, cconv, pp->arg[0].reg);
		}
		pp->arg[0].reg = strdup("ecx");
	}

	if (xarg > 1 && IS(cconv, "__fastcall")) {
		if (pp->arg[1].reg != NULL) {
			printf("%s:%d: %s with arg2 spec %s?\n",
				hdrfn, hdrfline, cconv, pp->arg[1].reg);
		}
		pp->arg[1].reg = strdup("edx");
	}

	pp->argc = xarg;

	for (i = 0; i < pp->argc; i++) {
		if (pp->arg[i].reg == NULL)
			pp->argc_stack++;
		else
			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 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 ret;

	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;

	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);
	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;

	if (pp_cache == NULL)
		build_pp_cache(fhdr);

	if (sym[0] == '_') // && strncmp(fname, "stdc", 4) == 0)
		sym++;

	strcpy(pp_search.name, sym);
	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 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..

	// 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 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 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.name != NULL)
			free(pp->arg[i].type.name);
		if (pp->arg[i].fptr != NULL)
			free(pp->arg[i].fptr);
	}
	if (pp->ret_type.name != NULL)
		free(pp->ret_type.name);
	free(pp);
}
Commit	Line	Data
	1
	2	struct parsed_proto;
	3
	4	struct parsed_type {
	5	char *name;
	6	unsigned int is_array:1;
	7	unsigned int is_ptr:1;
	8	unsigned int is_struct:1; // split for args
	9	};
	10
	11	struct parsed_proto_arg {
	12	char *reg;
	13	struct parsed_type type;
	14	struct parsed_proto *fptr;
	15	void *datap;
	16	};
	17
	18	struct parsed_proto {
	19	char name[256];
	20	union {
	21	struct parsed_type ret_type;
	22	struct parsed_type type;
	23	};
	24	struct parsed_proto_arg arg[16];
	25	int argc;
	26	int argc_stack;
	27	int argc_reg;
	28	unsigned int is_func:1;
	29	unsigned int is_stdcall:1;
	30	unsigned int is_fastcall:1;
	31	unsigned int is_vararg:1;
	32	unsigned int is_fptr:1;
	33	unsigned int is_noreturn:1;
	34	unsigned int is_unresolved:1;
	35	unsigned int has_structarg:1;
	36	};
	37
	38	static const char *hdrfn;
	39	static int hdrfline = 0;
	40
	41	static void pp_copy_arg(struct parsed_proto_arg *d,
	42	const struct parsed_proto_arg *s);
	43
	44	static int b_pp_c_handler(char proto, const char fname);
	45
	46	static int do_protostrs(FILE fhdr, const char fname)
	47	{
	48	const char *finc_name;
	49	const char *hdrfn_saved;
	50	char protostr[256];
	51	char path[256];
	52	char fname_inc[256];
	53	FILE *finc;
	54	int line = 0;
	55	int ret;
	56	char *p;
	57
	58	hdrfn_saved = hdrfn;
	59	hdrfn = fname;
	60
	61	while (fgets(protostr, sizeof(protostr), fhdr))
	62	{
	63	line++;
	64	if (strncmp(protostr, "//#include ", 11) == 0) {
	65	finc_name = protostr + 11;
	66	p = strpbrk(finc_name, "\r\n ");
	67	if (p != NULL)
	68	*p = 0;
	69
	70	path[0] = 0;
	71	p = strrchr(hdrfn_saved, '/');
	72	if (p) {
	73	memcpy(path, hdrfn_saved,
	74	p - hdrfn_saved + 1);
	75	path[p - hdrfn_saved + 1] = 0;
	76	}
	77	snprintf(fname_inc, sizeof(fname_inc), "%s%s",
	78	path, finc_name);
	79	finc = fopen(fname_inc, "r");
	80	if (finc == NULL) {
	81	printf("%s:%d: can't open '%s'\n",
	82	fname_inc, line, finc_name);
	83	continue;
	84	}
	85	ret = do_protostrs(finc, finc_name);
	86	fclose(finc);
	87	if (ret < 0)
	88	break;
	89	continue;
	90	}
	91	if (strncmp(sskip(protostr), "//", 2) == 0)
	92	continue;
	93
	94	p = protostr + strlen(protostr);
	95	for (p--; p >= protostr && my_isblank(*p); --p)
	96	*p = 0;
	97	if (p < protostr)
	98	continue;
	99
	100	hdrfline = line;
	101
	102	ret = b_pp_c_handler(protostr, hdrfn);
	103	if (ret < 0)
	104	break;
	105	}
	106
	107	hdrfn = hdrfn_saved;
	108
	109	if (feof(fhdr))
	110	return 0;
	111
	112	return -1;
	113	}
	114
	115	static int get_regparm(char dst, size_t dlen, char p)
	116	{
	117	int i, o;
	118
	119	if (*p != '<')
	120	return 0;
	121
	122	for (o = 0, i = 1; o < dlen; i++) {
	123	if (p[i] == 0)
	124	return 0;
	125	if (p[i] == '>')
	126	break;
	127	dst[o++] = p[i];
	128	}
	129	dst[o] = 0;
	130	return i + 1;
	131	}
	132
	133	// hmh..
	134	static const char *known_type_mod[] = {
	135	"const",
	136	"signed",
	137	"unsigned",
	138	"struct",
	139	"enum",
	140	"CONST",
	141	"volatile",
	142	};
	143
	144	static const char *known_ptr_types[] = {
	145	"FARPROC",
	146	"WNDPROC",
	147	"HACCEL",
	148	"HANDLE",
	149	"HBITMAP",
	150	"HCURSOR",
	151	"HDC",
	152	"HFONT",
	153	"HGDIOBJ",
	154	"HGLOBAL",
	155	"HICON",
	156	"HINSTANCE",
	157	//"HIMC", // DWORD
	158	"HMODULE",
	159	"HPALETTE",
	160	"HRGN",
	161	"HRSRC",
	162	"HKEY",
	163	"HMENU",
	164	"HWND",
	165	"PCRITICAL_SECTION",
	166	"PDWORD",
	167	"PFILETIME",
	168	"PHKEY",
	169	"PLONG",
	170	"PMEMORY_BASIC_INFORMATION",
	171	"PUINT",
	172	"PVOID",
	173	"PCVOID",
	174	"DLGPROC",
	175	"TIMERPROC",
	176	"WNDENUMPROC",
	177	"va_list",
	178	"__VALIST",
	179	};
	180
	181	static const char *ignored_keywords[] = {
	182	"extern",
	183	"WINBASEAPI",
	184	"WINUSERAPI",
	185	"WINGDIAPI",
	186	"WINADVAPI",
	187	};
	188
	189	// returns ptr to char after type ends
	190	static int typecmp(const char n, const char t)
	191	{
	192	for (; *t != 0; n++, t++) {
	193	while (n[0] == ' ' && (n[1] == ' ' \|\| n[1] == '*'))
	194	n++;
	195	while (t[0] == ' ' && (t[1] == ' ' \|\| t[1] == '*'))
	196	t++;
	197	if (n != t)
	198	return n - t;
	199	}
	200
	201	return 0;
	202	}
	203
	204	static const char skip_type_mod(const char n)
	205	{
	206	int len;
	207	int i;
	208
	209	for (i = 0; i < ARRAY_SIZE(known_type_mod); i++) {
	210	len = strlen(known_type_mod[i]);
	211	if (strncmp(n, known_type_mod[i], len) != 0)
	212	continue;
	213	if (!my_isblank(n[len]))
	214	continue;
	215
	216	n += len;
	217	while (my_isblank(*n))
	218	n++;
	219	i = 0;
	220	}
	221
	222	return n;
	223	}
	224
	225	static int check_type(const char name, struct parsed_type type)
	226	{
	227	const char n, n1;
	228	int ret = -1;
	229	int i;
	230
	231	n = skip_type_mod(name);
	232
	233	for (i = 0; i < ARRAY_SIZE(known_ptr_types); i++) {
	234	if (typecmp(n, known_ptr_types[i]))
	235	continue;
	236
	237	type->is_ptr = 1;
	238	break;
	239	}
	240
	241	if (n[0] == 'L' && n[1] == 'P' && strncmp(n, "LPARAM", 6))
	242	type->is_ptr = 1;
	243
	244	// assume single word
	245	while (!my_isblank(n) && !my_issep(n))
	246	n++;
	247
	248	while (1) {
	249	n1 = n;
	250	while (my_isblank(*n))
	251	n++;
	252	if (n == '') {
	253	type->is_ptr = 1;
	254	n++;
	255	continue;
	256	}
	257	break;
	258	}
	259
	260	ret = n1 - name;
	261	type->name = strndup(name, ret);
	262	if (IS(type->name, "VOID"))
	263	memcpy(type->name, "void", 4);
	264
	265	return ret;
	266	}
	267
	268	/* args are always expanded to 32bit */
	269	static const char map_reg(const char reg)
	270	{
	271	const char *regs_f[] = { "eax", "ebx", "ecx", "edx", "esi", "edi" };
	272	const char *regs_w[] = { "ax", "bx", "cx", "dx", "si", "di" };
	273	const char *regs_b[] = { "al", "bl", "cl", "dl" };
	274	int i;
	275
	276	for (i = 0; i < ARRAY_SIZE(regs_w); i++)
	277	if (IS(reg, regs_w[i]))
	278	return regs_f[i];
	279
	280	for (i = 0; i < ARRAY_SIZE(regs_b); i++)
	281	if (IS(reg, regs_b[i]))
	282	return regs_f[i];
	283
	284	return reg;
	285	}
	286
	287	static int check_struct_arg(struct parsed_proto_arg *arg)
	288	{
	289	if (IS(arg->type.name, "POINT"))
	290	return 2 - 1;
	291
	292	return 0;
	293	}
	294
	295	static int parse_protostr(char protostr, struct parsed_proto pp)
	296	{
	297	struct parsed_proto_arg *arg;
	298	char regparm[16];
	299	char buf[256];
	300	char cconv[32];
	301	int xarg = 0;
	302	char p, p1;
	303	int i, l;
	304	int ret;
	305
	306	p = sskip(protostr);
	307	if (p[0] == '/' && p[1] == '/') {
	308	printf("%s:%d: commented out?\n", hdrfn, hdrfline);
	309	p = sskip(p + 2);
	310	}
	311
	312	// strip unneeded stuff
	313	for (p1 = p; p1[0] != 0 && p1[1] != 0; p1++) {
	314	if ((p1[0] == '/' && p1[1] == '*')
	315	\|\| (p1[0] == '*' && p1[1] == '/'))
	316	p1[0] = p1[1] = ' ';
	317	}
	318
	319	if (!strncmp(p, "DECLSPEC_NORETURN ", 18)) {
	320	pp->is_noreturn = 1;
	321	p = sskip(p + 18);
	322	}
	323
	324	for (i = 0; i < ARRAY_SIZE(ignored_keywords); i++) {
	325	l = strlen(ignored_keywords[i]);
	326	if (!strncmp(p, ignored_keywords[i], l) && my_isblank(p[l]))
	327	p = sskip(p + l + 1);
	328	}
	329
	330	ret = check_type(p, &pp->ret_type);
	331	if (ret <= 0) {
	332	printf("%s:%d:%zd: unhandled return in '%s'\n",
	333	hdrfn, hdrfline, (p - protostr) + 1, protostr);
	334	return -1;
	335	}
	336	p = sskip(p + ret);
	337
	338	if (!strncmp(p, "noreturn ", 9)) {
	339	pp->is_noreturn = 1;
	340	p = sskip(p + 9);
	341	}
	342
	343	if (!strchr(p, ')')) {
	344	p = next_idt(buf, sizeof(buf), p);
	345	p = sskip(p);
	346	if (buf[0] == 0) {
	347	printf("%s:%d:%zd: var name missing\n",
	348	hdrfn, hdrfline, (p - protostr) + 1);
	349	return -1;
	350	}
	351	strcpy(pp->name, buf);
	352
	353	p1 = strchr(p, ']');
	354	if (p1 != NULL) {
	355	p = p1 + 1;
	356	pp->ret_type.is_array = 1;
	357	}
	358	return p - protostr;
	359	}
	360
	361	pp->is_func = 1;
	362
	363	if (*p == '(') {
	364	pp->is_fptr = 1;
	365	p = sskip(p + 1);
	366	}
	367
	368	p = next_word(cconv, sizeof(cconv), p);
	369	p = sskip(p);
	370	if (cconv[0] == 0) {
	371	printf("%s:%d:%zd: cconv missing\n",
	372	hdrfn, hdrfline, (p - protostr) + 1);
	373	return -1;
	374	}
	375	if (IS(cconv, "__cdecl"))
	376	pp->is_stdcall = 0;
	377	else if (IS(cconv, "__stdcall"))
	378	pp->is_stdcall = 1;
	379	else if (IS(cconv, "__fastcall")) {
	380	pp->is_fastcall = 1;
	381	pp->is_stdcall = 1; // sort of..
	382	}
	383	else if (IS(cconv, "__thiscall"))
	384	pp->is_stdcall = 1;
	385	else if (IS(cconv, "__userpurge"))
	386	pp->is_stdcall = 1; // IDA
	387	else if (IS(cconv, "__usercall"))
	388	pp->is_stdcall = 0; // IDA
	389	else if (IS(cconv, "WINAPI"))
	390	pp->is_stdcall = 1;
	391	else {
	392	printf("%s:%d:%zd: unhandled cconv: '%s'\n",
	393	hdrfn, hdrfline, (p - protostr) + 1, cconv);
	394	return -1;
	395	}
	396
	397	if (pp->is_fptr) {
	398	if (p != '') {
	399	printf("%s:%d:%zd: '*' expected\n",
	400	hdrfn, hdrfline, (p - protostr) + 1);
	401	return -1;
	402	}
	403	p++;
	404	// XXX: skipping extra asterisks, for now
	405	while (p == '')
	406	p++;
	407	p = sskip(p);
	408	}
	409
	410	p = next_idt(buf, sizeof(buf), p);
	411	p = sskip(p);
	412	if (buf[0] == 0) {
	413	//printf("%s:%d:%zd: func name missing\n",
	414	// hdrfn, hdrfline, (p - protostr) + 1);
	415	//return -1;
	416	}
	417	strcpy(pp->name, buf);
	418
	419	ret = get_regparm(regparm, sizeof(regparm), p);
	420	if (ret > 0) {
	421	if (!IS(regparm, "eax") && !IS(regparm, "ax")
	422	&& !IS(regparm, "al") && !IS(regparm, "edx:eax"))
	423	{
	424	printf("%s:%d:%zd: bad regparm: %s\n",
	425	hdrfn, hdrfline, (p - protostr) + 1, regparm);
	426	return -1;
	427	}
	428	p += ret;
	429	p = sskip(p);
	430	}
	431
	432	if (pp->is_fptr) {
	433	if (*p == '[') {
	434	// not really ret_type is array, but ohwell
	435	pp->ret_type.is_array = 1;
	436	p = strchr(p + 1, ']');
	437	if (p == NULL) {
	438	printf("%s:%d:%zd: ']' expected\n",
	439	hdrfn, hdrfline, (p - protostr) + 1);
	440	return -1;
	441	}
	442	p = sskip(p + 1);
	443	}
	444	if (*p != ')') {
	445	printf("%s:%d:%zd: ')' expected\n",
	446	hdrfn, hdrfline, (p - protostr) + 1);
	447	return -1;
	448	}
	449	p = sskip(p + 1);
	450	}
	451
	452	if (*p != '(') {
	453	printf("%s:%d:%zd: '(' expected, got '%c'\n",
	454	hdrfn, hdrfline, (p - protostr) + 1, *p);
	455	return -1;
	456	}
	457	p++;
	458
	459	// check for x(void)
	460	p = sskip(p);
	461	if ((!strncmp(p, "void", 4) \|\| !strncmp(p, "VOID", 4))
	462	&& *sskip(p + 4) == ')')
	463	p += 4;
	464
	465	while (1) {
	466	p = sskip(p);
	467	if (*p == ')') {
	468	p++;
	469	break;
	470	}
	471	if (xarg > 0) {
	472	if (*p != ',') {
	473	printf("%s:%d:%zd: ',' expected\n",
	474	hdrfn, hdrfline, (p - protostr) + 1);
	475	return -1;
	476	}
	477	p = sskip(p + 1);
	478	}
	479
	480	if (!strncmp(p, "...", 3)) {
	481	pp->is_vararg = 1;
	482	p = sskip(p + 3);
	483	if (*p == ')') {
	484	p++;
	485	break;
	486	}
	487	printf("%s:%d:%zd: ')' expected\n",
	488	hdrfn, hdrfline, (p - protostr) + 1);
	489	return -1;
	490	}
	491
	492	arg = &pp->arg[xarg];
	493	xarg++;
	494
	495	p1 = p;
	496	ret = check_type(p, &arg->type);
	497	if (ret <= 0) {
	498	printf("%s:%d:%zd: unhandled type for arg%d\n",
	499	hdrfn, hdrfline, (p - protostr) + 1, xarg);
	500	return -1;
	501	}
	502	p = sskip(p + ret);
	503
	504	if (*p == '(') {
	505	// func ptr
	506	arg->fptr = calloc(1, sizeof(*arg->fptr));
	507	ret = parse_protostr(p1, arg->fptr);
	508	if (ret < 0) {
	509	printf("%s:%d:%zd: funcarg parse failed\n",
	510	hdrfn, hdrfline, p1 - protostr);
	511	return -1;
	512	}
	513	// we'll treat it as void * for non-calls
	514	arg->type.name = strdup("void *");
	515	arg->type.is_ptr = 1;
	516
	517	p = p1 + ret;
	518	}
	519
	520	p = next_idt(buf, sizeof(buf), p);
	521	p = sskip(p);
	522	#if 0
	523	if (buf[0] == 0) {
	524	printf("%s:%d:%zd: idt missing for arg%d\n",
	525	hdrfn, hdrfline, (p - protostr) + 1, xarg);
	526	return -1;
	527	}
	528	#endif
	529	arg->reg = NULL;
	530
	531	ret = get_regparm(regparm, sizeof(regparm), p);
	532	if (ret > 0) {
	533	p += ret;
	534	p = sskip(p);
	535
	536	arg->reg = strdup(map_reg(regparm));
	537	}
	538
	539	ret = check_struct_arg(arg);
	540	if (ret > 0) {
	541	pp->has_structarg = 1;
	542	arg->type.is_struct = 1;
	543	free(arg->type.name);
	544	arg->type.name = strdup("int");
	545	for (l = 0; l < ret; l++) {
	546	pp_copy_arg(&pp->arg[xarg], arg);
	547	xarg++;
	548	}
	549	}
	550	}
	551
	552	if (xarg > 0 && (IS(cconv, "__fastcall") \|\| IS(cconv, "__thiscall"))) {
	553	if (pp->arg[0].reg != NULL) {
	554	printf("%s:%d: %s with arg1 spec %s?\n",
	555	hdrfn, hdrfline, cconv, pp->arg[0].reg);
	556	}
	557	pp->arg[0].reg = strdup("ecx");
	558	}
	559
	560	if (xarg > 1 && IS(cconv, "__fastcall")) {
	561	if (pp->arg[1].reg != NULL) {
	562	printf("%s:%d: %s with arg2 spec %s?\n",
	563	hdrfn, hdrfline, cconv, pp->arg[1].reg);
	564	}
	565	pp->arg[1].reg = strdup("edx");
	566	}
	567
	568	pp->argc = xarg;
	569
	570	for (i = 0; i < pp->argc; i++) {
	571	if (pp->arg[i].reg == NULL)
	572	pp->argc_stack++;
	573	else
	574	pp->argc_reg++;
	575	}
	576
	577	if (pp->argc == 1 && pp->arg[0].reg != NULL
	578	&& IS(pp->arg[0].reg, "ecx"))
	579	{
	580	pp->is_fastcall = 1;
	581	}
	582	else if (pp->argc_reg == 2
	583	&& pp->arg[0].reg != NULL && IS(pp->arg[0].reg, "ecx")
	584	&& pp->arg[1].reg != NULL && IS(pp->arg[1].reg, "edx"))
	585	{
	586	pp->is_fastcall = 1;
	587	}
	588
	589	if (pp->is_vararg && (pp->is_stdcall \|\| pp->is_fastcall)) {
	590	printf("%s:%d: vararg %s?\n", hdrfn, hdrfline, cconv);
	591	return -1;
	592	}
	593
	594	return p - protostr;
	595	}
	596
	597	static int pp_name_cmp(const void p1, const void p2)
	598	{
	599	const struct parsed_proto pp1 = p1, pp2 = p2;
	600	return strcmp(pp1->name, pp2->name);
	601	}
	602
	603	static struct parsed_proto *pp_cache;
	604	static int pp_cache_size;
	605	static int pp_cache_alloc;
	606
	607	static int b_pp_c_handler(char proto, const char fname)
	608	{
	609	int ret;
	610
	611	if (pp_cache_size >= pp_cache_alloc) {
	612	pp_cache_alloc = pp_cache_alloc * 2 + 64;
	613	pp_cache = realloc(pp_cache, pp_cache_alloc
	614	* sizeof(pp_cache[0]));
	615	my_assert_not(pp_cache, NULL);
	616	memset(pp_cache + pp_cache_size, 0,
	617	(pp_cache_alloc - pp_cache_size)
	618	* sizeof(pp_cache[0]));
	619	}
	620
	621	ret = parse_protostr(proto, &pp_cache[pp_cache_size]);
	622	if (ret < 0)
	623	return -1;
	624
	625	pp_cache_size++;
	626	return 0;
	627	}
	628
	629	static void build_pp_cache(FILE *fhdr)
	630	{
	631	long pos;
	632	int ret;
	633
	634	pos = ftell(fhdr);
	635	rewind(fhdr);
	636
	637	ret = do_protostrs(fhdr, hdrfn);
	638	if (ret < 0)
	639	exit(1);
	640
	641	qsort(pp_cache, pp_cache_size, sizeof(pp_cache[0]), pp_name_cmp);
	642	fseek(fhdr, pos, SEEK_SET);
	643	}
	644
	645	static const struct parsed_proto proto_parse(FILE fhdr, const char *sym,
	646	int quiet)
	647	{
	648	const struct parsed_proto *pp_ret;
	649	struct parsed_proto pp_search;
	650
	651	if (pp_cache == NULL)
	652	build_pp_cache(fhdr);
	653
	654	if (sym[0] == '_') // && strncmp(fname, "stdc", 4) == 0)
	655	sym++;
	656
	657	strcpy(pp_search.name, sym);
	658	pp_ret = bsearch(&pp_search, pp_cache, pp_cache_size,
	659	sizeof(pp_cache[0]), pp_name_cmp);
	660	if (pp_ret == NULL && !quiet)
	661	printf("%s: sym '%s' is missing\n", hdrfn, sym);
	662
	663	return pp_ret;
	664	}
	665
	666	static void pp_copy_arg(struct parsed_proto_arg *d,
	667	const struct parsed_proto_arg *s)
	668	{
	669	memcpy(d, s, sizeof(*d));
	670
	671	if (s->reg != NULL) {
	672	d->reg = strdup(s->reg);
	673	my_assert_not(d->reg, NULL);
	674	}
	675	if (s->type.name != NULL) {
	676	d->type.name = strdup(s->type.name);
	677	my_assert_not(d->type.name, NULL);
	678	}
	679	if (s->fptr != NULL) {
	680	d->fptr = malloc(sizeof(*d->fptr));
	681	my_assert_not(d->fptr, NULL);
	682	memcpy(d->fptr, s->fptr, sizeof(*d->fptr));
	683	}
	684	}
	685
	686	struct parsed_proto proto_clone(const struct parsed_proto pp_c)
	687	{
	688	struct parsed_proto *pp;
	689	int i;
	690
	691	pp = malloc(sizeof(*pp));
	692	my_assert_not(pp, NULL);
	693	memcpy(pp, pp_c, sizeof(*pp)); // lazy..
	694
	695	// do the actual deep copy..
	696	for (i = 0; i < pp_c->argc; i++)
	697	pp_copy_arg(&pp->arg[i], &pp_c->arg[i]);
	698	if (pp_c->ret_type.name != NULL)
	699	pp->ret_type.name = strdup(pp_c->ret_type.name);
	700
	701	return pp;
	702	}
	703
	704	static inline void pp_print(char *buf, size_t buf_size,
	705	const struct parsed_proto *pp)
	706	{
	707	size_t l;
	708	int i;
	709
	710	snprintf(buf, buf_size, "%s %s(", pp->ret_type.name, pp->name);
	711	l = strlen(buf);
	712
	713	for (i = 0; i < pp->argc_reg; i++) {
	714	snprintf(buf + l, buf_size - l, "%s%s",
	715	i == 0 ? "" : ", ", pp->arg[i].reg);
	716	l = strlen(buf);
	717	}
	718	if (pp->argc_stack > 0) {
	719	snprintf(buf + l, buf_size - l, "%s{%d stack}",
	720	i == 0 ? "" : ", ", pp->argc_stack);
	721	l = strlen(buf);
	722	}
	723	snprintf(buf + l, buf_size - l, ")");
	724	}
	725
	726	static inline void proto_release(struct parsed_proto *pp)
	727	{
	728	int i;
	729
	730	for (i = 0; i < pp->argc; i++) {
	731	if (pp->arg[i].reg != NULL)
	732	free(pp->arg[i].reg);
	733	if (pp->arg[i].type.name != NULL)
	734	free(pp->arg[i].type.name);
	735	if (pp->arg[i].fptr != NULL)
	736	free(pp->arg[i].fptr);
	737	}
	738	if (pp->ret_type.name != NULL)
	739	free(pp->ret_type.name);
	740	free(pp);
	741	}