[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",
	"PBYTE",
	"PCRITICAL_SECTION",
	"PDWORD",
	"PFILETIME",
	"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 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));
		}

		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++;
			}
		}
	}

	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	"PBYTE",
	166	"PCRITICAL_SECTION",
	167	"PDWORD",
	168	"PFILETIME",
	169	"PHKEY",
	170	"PLONG",
	171	"PMEMORY_BASIC_INFORMATION",
	172	"PUINT",
	173	"PVOID",
	174	"PCVOID",
	175	"PWORD",
	176	"DLGPROC",
	177	"TIMERPROC",
	178	"WNDENUMPROC",
	179	"va_list",
	180	"__VALIST",
	181	};
	182
	183	static const char *ignored_keywords[] = {
	184	"extern",
	185	"WINBASEAPI",
	186	"WINUSERAPI",
	187	"WINGDIAPI",
	188	"WINADVAPI",
	189	};
	190
	191	// returns ptr to char after type ends
	192	static int typecmp(const char n, const char t)
	193	{
	194	for (; *t != 0; n++, t++) {
	195	while (n[0] == ' ' && (n[1] == ' ' \|\| n[1] == '*'))
	196	n++;
	197	while (t[0] == ' ' && (t[1] == ' ' \|\| t[1] == '*'))
	198	t++;
	199	if (n != t)
	200	return n - t;
	201	}
	202
	203	return 0;
	204	}
	205
	206	static const char skip_type_mod(const char n)
	207	{
	208	int len;
	209	int i;
	210
	211	for (i = 0; i < ARRAY_SIZE(known_type_mod); i++) {
	212	len = strlen(known_type_mod[i]);
	213	if (strncmp(n, known_type_mod[i], len) != 0)
	214	continue;
	215	if (!my_isblank(n[len]))
	216	continue;
	217
	218	n += len;
	219	while (my_isblank(*n))
	220	n++;
	221	i = 0;
	222	}
	223
	224	return n;
	225	}
	226
	227	static int check_type(const char name, struct parsed_type type)
	228	{
	229	const char n, n1;
	230	int ret = -1;
	231	int i;
	232
	233	n = skip_type_mod(name);
	234
	235	for (i = 0; i < ARRAY_SIZE(known_ptr_types); i++) {
	236	if (typecmp(n, known_ptr_types[i]))
	237	continue;
	238
	239	type->is_ptr = 1;
	240	break;
	241	}
	242
	243	if (n[0] == 'L' && n[1] == 'P' && strncmp(n, "LPARAM", 6))
	244	type->is_ptr = 1;
	245
	246	// assume single word
	247	while (!my_isblank(n) && !my_issep(n))
	248	n++;
	249
	250	while (1) {
	251	n1 = n;
	252	while (my_isblank(*n))
	253	n++;
	254	if (n == '') {
	255	type->is_ptr = 1;
	256	n++;
	257	continue;
	258	}
	259	break;
	260	}
	261
	262	ret = n1 - name;
	263	type->name = strndup(name, ret);
	264	if (IS(type->name, "VOID"))
	265	memcpy(type->name, "void", 4);
	266
	267	return ret;
	268	}
	269
	270	/* args are always expanded to 32bit */
	271	static const char map_reg(const char reg)
	272	{
	273	const char *regs_f[] = { "eax", "ebx", "ecx", "edx", "esi", "edi" };
	274	const char *regs_w[] = { "ax", "bx", "cx", "dx", "si", "di" };
	275	const char *regs_b[] = { "al", "bl", "cl", "dl" };
	276	int i;
	277
	278	for (i = 0; i < ARRAY_SIZE(regs_w); i++)
	279	if (IS(reg, regs_w[i]))
	280	return regs_f[i];
	281
	282	for (i = 0; i < ARRAY_SIZE(regs_b); i++)
	283	if (IS(reg, regs_b[i]))
	284	return regs_f[i];
	285
	286	return reg;
	287	}
	288
	289	static int check_struct_arg(struct parsed_proto_arg *arg)
	290	{
	291	if (IS(arg->type.name, "POINT"))
	292	return 2 - 1;
	293
	294	return 0;
	295	}
	296
	297	static int parse_protostr(char protostr, struct parsed_proto pp)
	298	{
	299	struct parsed_proto_arg *arg;
	300	char regparm[16];
	301	char buf[256];
	302	char cconv[32];
	303	int xarg = 0;
	304	char p, p1;
	305	int i, l;
	306	int ret;
	307
	308	p = sskip(protostr);
	309	if (p[0] == '/' && p[1] == '/') {
	310	printf("%s:%d: commented out?\n", hdrfn, hdrfline);
	311	p = sskip(p + 2);
	312	}
	313
	314	// strip unneeded stuff
	315	for (p1 = p; p1[0] != 0 && p1[1] != 0; p1++) {
	316	if ((p1[0] == '/' && p1[1] == '*')
	317	\|\| (p1[0] == '*' && p1[1] == '/'))
	318	p1[0] = p1[1] = ' ';
	319	}
	320
	321	if (!strncmp(p, "DECLSPEC_NORETURN ", 18)) {
	322	pp->is_noreturn = 1;
	323	p = sskip(p + 18);
	324	}
	325
	326	for (i = 0; i < ARRAY_SIZE(ignored_keywords); i++) {
	327	l = strlen(ignored_keywords[i]);
	328	if (!strncmp(p, ignored_keywords[i], l) && my_isblank(p[l]))
	329	p = sskip(p + l + 1);
	330	}
	331
	332	ret = check_type(p, &pp->ret_type);
	333	if (ret <= 0) {
	334	printf("%s:%d:%zd: unhandled return in '%s'\n",
	335	hdrfn, hdrfline, (p - protostr) + 1, protostr);
	336	return -1;
	337	}
	338	p = sskip(p + ret);
	339
	340	if (!strncmp(p, "noreturn ", 9)) {
	341	pp->is_noreturn = 1;
	342	p = sskip(p + 9);
	343	}
	344
	345	if (!strchr(p, ')')) {
	346	p = next_idt(buf, sizeof(buf), p);
	347	p = sskip(p);
	348	if (buf[0] == 0) {
	349	printf("%s:%d:%zd: var name missing\n",
	350	hdrfn, hdrfline, (p - protostr) + 1);
	351	return -1;
	352	}
	353	strcpy(pp->name, buf);
	354
	355	p1 = strchr(p, ']');
	356	if (p1 != NULL) {
	357	p = p1 + 1;
	358	pp->ret_type.is_array = 1;
	359	}
	360	return p - protostr;
	361	}
	362
	363	pp->is_func = 1;
	364
	365	if (*p == '(') {
	366	pp->is_fptr = 1;
	367	p = sskip(p + 1);
	368	}
	369
	370	p = next_word(cconv, sizeof(cconv), p);
	371	p = sskip(p);
	372	if (cconv[0] == 0) {
	373	printf("%s:%d:%zd: cconv missing\n",
	374	hdrfn, hdrfline, (p - protostr) + 1);
	375	return -1;
	376	}
	377	if (IS(cconv, "__cdecl"))
	378	pp->is_stdcall = 0;
	379	else if (IS(cconv, "__stdcall"))
	380	pp->is_stdcall = 1;
	381	else if (IS(cconv, "__fastcall")) {
	382	pp->is_fastcall = 1;
	383	pp->is_stdcall = 1; // sort of..
	384	}
	385	else if (IS(cconv, "__thiscall"))
	386	pp->is_stdcall = 1;
	387	else if (IS(cconv, "__userpurge"))
	388	pp->is_stdcall = 1; // IDA
	389	else if (IS(cconv, "__usercall"))
	390	pp->is_stdcall = 0; // IDA
	391	else if (IS(cconv, "WINAPI"))
	392	pp->is_stdcall = 1;
	393	else {
	394	printf("%s:%d:%zd: unhandled cconv: '%s'\n",
	395	hdrfn, hdrfline, (p - protostr) + 1, cconv);
	396	return -1;
	397	}
	398
	399	if (pp->is_fptr) {
	400	if (p != '') {
	401	printf("%s:%d:%zd: '*' expected\n",
	402	hdrfn, hdrfline, (p - protostr) + 1);
	403	return -1;
	404	}
	405	p++;
	406	// XXX: skipping extra asterisks, for now
	407	while (p == '')
	408	p++;
	409	p = sskip(p);
	410	}
	411
	412	p = next_idt(buf, sizeof(buf), p);
	413	p = sskip(p);
	414	if (buf[0] == 0) {
	415	//printf("%s:%d:%zd: func name missing\n",
	416	// hdrfn, hdrfline, (p - protostr) + 1);
	417	//return -1;
	418	}
	419	strcpy(pp->name, buf);
	420
	421	ret = get_regparm(regparm, sizeof(regparm), p);
	422	if (ret > 0) {
	423	if (!IS(regparm, "eax") && !IS(regparm, "ax")
	424	&& !IS(regparm, "al") && !IS(regparm, "edx:eax"))
	425	{
	426	printf("%s:%d:%zd: bad regparm: %s\n",
	427	hdrfn, hdrfline, (p - protostr) + 1, regparm);
	428	return -1;
	429	}
	430	p += ret;
	431	p = sskip(p);
	432	}
	433
	434	if (pp->is_fptr) {
	435	if (*p == '[') {
	436	// not really ret_type is array, but ohwell
	437	pp->ret_type.is_array = 1;
	438	p = strchr(p + 1, ']');
	439	if (p == NULL) {
	440	printf("%s:%d:%zd: ']' expected\n",
	441	hdrfn, hdrfline, (p - protostr) + 1);
	442	return -1;
	443	}
	444	p = sskip(p + 1);
	445	}
	446	if (*p != ')') {
	447	printf("%s:%d:%zd: ')' expected\n",
	448	hdrfn, hdrfline, (p - protostr) + 1);
	449	return -1;
	450	}
	451	p = sskip(p + 1);
	452	}
	453
	454	if (*p != '(') {
	455	printf("%s:%d:%zd: '(' expected, got '%c'\n",
	456	hdrfn, hdrfline, (p - protostr) + 1, *p);
	457	return -1;
	458	}
	459	p++;
	460
	461	// check for x(void)
	462	p = sskip(p);
	463	if ((!strncmp(p, "void", 4) \|\| !strncmp(p, "VOID", 4))
	464	&& *sskip(p + 4) == ')')
	465	p += 4;
	466
	467	while (1) {
	468	p = sskip(p);
	469	if (*p == ')') {
	470	p++;
	471	break;
	472	}
	473	if (xarg > 0) {
	474	if (*p != ',') {
	475	printf("%s:%d:%zd: ',' expected\n",
	476	hdrfn, hdrfline, (p - protostr) + 1);
	477	return -1;
	478	}
	479	p = sskip(p + 1);
	480	}
	481
	482	if (!strncmp(p, "...", 3)) {
	483	pp->is_vararg = 1;
	484	p = sskip(p + 3);
	485	if (*p == ')') {
	486	p++;
	487	break;
	488	}
	489	printf("%s:%d:%zd: ')' expected\n",
	490	hdrfn, hdrfline, (p - protostr) + 1);
	491	return -1;
	492	}
	493
	494	arg = &pp->arg[xarg];
	495	xarg++;
	496
	497	p1 = p;
	498	ret = check_type(p, &arg->type);
	499	if (ret <= 0) {
	500	printf("%s:%d:%zd: unhandled type for arg%d\n",
	501	hdrfn, hdrfline, (p - protostr) + 1, xarg);
	502	return -1;
	503	}
	504	p = sskip(p + ret);
	505
	506	if (*p == '(') {
	507	// func ptr
	508	arg->fptr = calloc(1, sizeof(*arg->fptr));
	509	ret = parse_protostr(p1, arg->fptr);
	510	if (ret < 0) {
	511	printf("%s:%d:%zd: funcarg parse failed\n",
	512	hdrfn, hdrfline, p1 - protostr);
	513	return -1;
	514	}
	515	// we'll treat it as void * for non-calls
	516	arg->type.name = strdup("void *");
	517	arg->type.is_ptr = 1;
	518
	519	p = p1 + ret;
	520	}
	521
	522	p = next_idt(buf, sizeof(buf), p);
	523	p = sskip(p);
	524	#if 0
	525	if (buf[0] == 0) {
	526	printf("%s:%d:%zd: idt missing for arg%d\n",
	527	hdrfn, hdrfline, (p - protostr) + 1, xarg);
	528	return -1;
	529	}
	530	#endif
	531	arg->reg = NULL;
	532
	533	ret = get_regparm(regparm, sizeof(regparm), p);
	534	if (ret > 0) {
	535	p += ret;
	536	p = sskip(p);
	537
	538	arg->reg = strdup(map_reg(regparm));
	539	}
	540
	541	if (strstr(arg->type.name, "int64")
	542	\|\| IS(arg->type.name, "double"))
	543	{
	544	// hack..
	545	free(arg->type.name);
	546	arg->type.name = strdup("int");
	547	pp_copy_arg(&pp->arg[xarg], arg);
	548	xarg++;
	549	}
	550
	551	ret = check_struct_arg(arg);
	552	if (ret > 0) {
	553	pp->has_structarg = 1;
	554	arg->type.is_struct = 1;
	555	free(arg->type.name);
	556	arg->type.name = strdup("int");
	557	for (l = 0; l < ret; l++) {
	558	pp_copy_arg(&pp->arg[xarg], arg);
	559	xarg++;
	560	}
	561	}
	562	}
	563
	564	if (xarg > 0 && (IS(cconv, "__fastcall") \|\| IS(cconv, "__thiscall"))) {
	565	if (pp->arg[0].reg != NULL) {
	566	printf("%s:%d: %s with arg1 spec %s?\n",
	567	hdrfn, hdrfline, cconv, pp->arg[0].reg);
	568	}
	569	pp->arg[0].reg = strdup("ecx");
	570	}
	571
	572	if (xarg > 1 && IS(cconv, "__fastcall")) {
	573	if (pp->arg[1].reg != NULL) {
	574	printf("%s:%d: %s with arg2 spec %s?\n",
	575	hdrfn, hdrfline, cconv, pp->arg[1].reg);
	576	}
	577	pp->arg[1].reg = strdup("edx");
	578	}
	579
	580	pp->argc = xarg;
	581
	582	for (i = 0; i < pp->argc; i++) {
	583	if (pp->arg[i].reg == NULL)
	584	pp->argc_stack++;
	585	else
	586	pp->argc_reg++;
	587	}
	588
	589	if (pp->argc == 1 && pp->arg[0].reg != NULL
	590	&& IS(pp->arg[0].reg, "ecx"))
	591	{
	592	pp->is_fastcall = 1;
	593	}
	594	else if (pp->argc_reg == 2
	595	&& pp->arg[0].reg != NULL && IS(pp->arg[0].reg, "ecx")
	596	&& pp->arg[1].reg != NULL && IS(pp->arg[1].reg, "edx"))
	597	{
	598	pp->is_fastcall = 1;
	599	}
	600
	601	if (pp->is_vararg && (pp->is_stdcall \|\| pp->is_fastcall)) {
	602	printf("%s:%d: vararg %s?\n", hdrfn, hdrfline, cconv);
	603	return -1;
	604	}
	605
	606	return p - protostr;
	607	}
	608
	609	static int pp_name_cmp(const void p1, const void p2)
	610	{
	611	const struct parsed_proto pp1 = p1, pp2 = p2;
	612	return strcmp(pp1->name, pp2->name);
	613	}
	614
	615	static struct parsed_proto *pp_cache;
	616	static int pp_cache_size;
	617	static int pp_cache_alloc;
	618
	619	static int b_pp_c_handler(char proto, const char fname)
	620	{
	621	int ret;
	622
	623	if (pp_cache_size >= pp_cache_alloc) {
	624	pp_cache_alloc = pp_cache_alloc * 2 + 64;
	625	pp_cache = realloc(pp_cache, pp_cache_alloc
	626	* sizeof(pp_cache[0]));
	627	my_assert_not(pp_cache, NULL);
	628	memset(pp_cache + pp_cache_size, 0,
	629	(pp_cache_alloc - pp_cache_size)
	630	* sizeof(pp_cache[0]));
	631	}
	632
	633	ret = parse_protostr(proto, &pp_cache[pp_cache_size]);
	634	if (ret < 0)
	635	return -1;
	636
	637	pp_cache_size++;
	638	return 0;
	639	}
	640
	641	static void build_pp_cache(FILE *fhdr)
	642	{
	643	long pos;
	644	int ret;
	645
	646	pos = ftell(fhdr);
	647	rewind(fhdr);
	648
	649	ret = do_protostrs(fhdr, hdrfn);
	650	if (ret < 0)
	651	exit(1);
	652
	653	qsort(pp_cache, pp_cache_size, sizeof(pp_cache[0]), pp_name_cmp);
	654	fseek(fhdr, pos, SEEK_SET);
	655	}
	656
	657	static const struct parsed_proto proto_parse(FILE fhdr, const char *sym,
	658	int quiet)
	659	{
	660	const struct parsed_proto *pp_ret;
	661	struct parsed_proto pp_search;
	662
	663	if (pp_cache == NULL)
	664	build_pp_cache(fhdr);
	665
	666	if (sym[0] == '_') // && strncmp(fname, "stdc", 4) == 0)
	667	sym++;
	668
	669	strcpy(pp_search.name, sym);
	670	pp_ret = bsearch(&pp_search, pp_cache, pp_cache_size,
	671	sizeof(pp_cache[0]), pp_name_cmp);
	672	if (pp_ret == NULL && !quiet)
	673	printf("%s: sym '%s' is missing\n", hdrfn, sym);
	674
	675	return pp_ret;
	676	}
	677
	678	static void pp_copy_arg(struct parsed_proto_arg *d,
	679	const struct parsed_proto_arg *s)
	680	{
	681	memcpy(d, s, sizeof(*d));
	682
	683	if (s->reg != NULL) {
	684	d->reg = strdup(s->reg);
	685	my_assert_not(d->reg, NULL);
	686	}
	687	if (s->type.name != NULL) {
	688	d->type.name = strdup(s->type.name);
	689	my_assert_not(d->type.name, NULL);
	690	}
	691	if (s->fptr != NULL) {
	692	d->fptr = malloc(sizeof(*d->fptr));
	693	my_assert_not(d->fptr, NULL);
	694	memcpy(d->fptr, s->fptr, sizeof(*d->fptr));
	695	}
	696	}
	697
	698	struct parsed_proto proto_clone(const struct parsed_proto pp_c)
	699	{
	700	struct parsed_proto *pp;
	701	int i;
	702
	703	pp = malloc(sizeof(*pp));
	704	my_assert_not(pp, NULL);
	705	memcpy(pp, pp_c, sizeof(*pp)); // lazy..
	706
	707	// do the actual deep copy..
	708	for (i = 0; i < pp_c->argc; i++)
	709	pp_copy_arg(&pp->arg[i], &pp_c->arg[i]);
	710	if (pp_c->ret_type.name != NULL)
	711	pp->ret_type.name = strdup(pp_c->ret_type.name);
	712
	713	return pp;
	714	}
	715
	716	static inline void pp_print(char *buf, size_t buf_size,
	717	const struct parsed_proto *pp)
	718	{
	719	size_t l;
	720	int i;
	721
	722	snprintf(buf, buf_size, "%s %s(", pp->ret_type.name, pp->name);
	723	l = strlen(buf);
	724
	725	for (i = 0; i < pp->argc_reg; i++) {
	726	snprintf(buf + l, buf_size - l, "%s%s",
	727	i == 0 ? "" : ", ", pp->arg[i].reg);
	728	l = strlen(buf);
	729	}
	730	if (pp->argc_stack > 0) {
	731	snprintf(buf + l, buf_size - l, "%s{%d stack}",
	732	i == 0 ? "" : ", ", pp->argc_stack);
	733	l = strlen(buf);
	734	}
	735	snprintf(buf + l, buf_size - l, ")");
	736	}
	737
	738	static inline void proto_release(struct parsed_proto *pp)
	739	{
	740	int i;
	741
	742	for (i = 0; i < pp->argc; i++) {
	743	if (pp->arg[i].reg != NULL)
	744	free(pp->arg[i].reg);
	745	if (pp->arg[i].type.name != NULL)
	746	free(pp->arg[i].type.name);
	747	if (pp->arg[i].fptr != NULL)
	748	free(pp->arg[i].fptr);
	749	}
	750	if (pp->ret_type.name != NULL)
	751	free(pp->ret_type.name);
	752	free(pp);
	753	}