VBoxCompilerPlugInsCommon.cpp@ 96445

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1	/* $Id: VBoxCompilerPlugInsCommon.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* VBoxCompilerPlugInsCommon - Code common to the compiler plug-ins.
4	*/
5
6	/*
7	* Copyright (C) 2006-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define VBOX_COMPILER_PLUG_IN_AGNOSTIC
33	#include "VBoxCompilerPlugIns.h"
34
35	#include <iprt/string.h>
36
37
38	/*********************************************************************************************************************************
39	* Defined Constants And Macros *
40	*********************************************************************************************************************************/
41	#define MY_ISDIGIT(c) ((c) >= '0' && (c) <= '9')
42
43	/** @name RTSTR_Z_XXX - Size modifiers
44	* @{ */
45	#define RTSTR_Z_DEFAULT UINT16_C(0x0001)
46	#define RTSTR_Z_LONG UINT16_C(0x0002) /*< l /
47	#define RTSTR_Z_LONGLONG UINT16_C(0x0004) /*< ll, L, q. /
48	#define RTSTR_Z_HALF UINT16_C(0x0008) /*< h /
49	#define RTSTR_Z_HALFHALF UINT16_C(0x0010) /*< hh (internally H) /
50	#define RTSTR_Z_SIZE UINT16_C(0x0020) /*< z /
51	#define RTSTR_Z_PTRDIFF UINT16_C(0x0040) /*< t /
52	#define RTSTR_Z_INTMAX UINT16_C(0x0080) /*< j /
53	#define RTSTR_Z_MS_I32 UINT16_C(0x1000) /*< I32 /
54	#define RTSTR_Z_MS_I64 UINT16_C(0x2000) /*< I64 /
55	#define RTSTR_Z_ALL_INT UINT16_C(0x30fe) /*< short hand for integers. /
56	/** @} */
57
58
59	/** @name VFMTCHKTYPE_F_XXX - Type flags.
60	* @{ */
61	/** Pointers type. */
62	#define VFMTCHKTYPE_F_PTR UINT8_C(0x01)
63	/** Both const and non-const pointer types. */
64	#define VFMTCHKTYPE_F_CPTR (UINT8_C(0x02) \| VFMTCHKTYPE_F_PTR)
65	/** @} */
66
67	/** @name VFMTCHKTYPE_Z_XXX - Special type sizes
68	* @{ */
69	#define VFMTCHKTYPE_Z_CHAR UINT8_C(0xe0)
70	#define VFMTCHKTYPE_Z_SHORT UINT8_C(0xe1)
71	#define VFMTCHKTYPE_Z_INT UINT8_C(0xe2)
72	#define VFMTCHKTYPE_Z_LONG UINT8_C(0xe3)
73	#define VFMTCHKTYPE_Z_LONGLONG UINT8_C(0xe4)
74	#define VFMTCHKTYPE_Z_PTR UINT8_C(0xe5) /*< ASSUMED to be the same for 'void ', 'size_t' and 'ptrdiff_t'. */
75	/** @} */
76
77	/** @name VFMTCHKTYPE_NM_XXX - Standard C type names.
78	* @{ */
79	#define VFMTCHKTYPE_NM_INT "int"
80	#define VFMTCHKTYPE_NM_UINT "unsigned int"
81	#define VFMTCHKTYPE_NM_LONG "long"
82	#define VFMTCHKTYPE_NM_ULONG "unsigned long"
83	#define VFMTCHKTYPE_NM_LONGLONG "long long"
84	#define VFMTCHKTYPE_NM_ULONGLONG "unsigned long long"
85	#define VFMTCHKTYPE_NM_SHORT "short"
86	#define VFMTCHKTYPE_NM_USHORT "unsigned short"
87	#define VFMTCHKTYPE_NM_CHAR "char"
88	#define VFMTCHKTYPE_NM_SCHAR "signed char"
89	#define VFMTCHKTYPE_NM_UCHAR "unsigned char"
90	/** @} */
91
92
93	/** @name VFMTCHKDESC_F_XXX - Format descriptor flags.
94	* @{ */
95	#define VFMTCHKDESC_F_NONE UINT32_C(0)
96	#define VFMTCHKDESC_F_SIGNED RT_BIT_32(0)
97	#define VFMTCHKDESC_F_UNSIGNED RT_BIT_32(1)
98	/** @} */
99
100
101	/*********************************************************************************************************************************
102	* Structures and Typedefs *
103	*********************************************************************************************************************************/
104	/**
105	* Format check type entry.
106	*/
107	typedef struct VFMTCHKTYPE
108	{
109	/** The format size flag(s). */
110	uint16_t fSize;
111	/** The argument size. */
112	uint8_t cbArg;
113	/** Argument flags (VFMTCHKTYPE_F_XXX). */
114	uint8_t fFlags;
115	/** List of strings with acceptable types, if NULL only check the sizes. */
116	const char *pszzTypeNames;
117	} VFMTCHKTYPE;
118	/** Pointer to a read only format check type entry. */
119	typedef VFMTCHKTYPE const *PCVFMTCHKTYPE;
120
121	/** For use as an initializer in VFMTCHKDESK where it indicates that
122	* everything is covered by VFMTCHKDESC::paMoreTypes. Useful for repeating
123	* stuff. */
124	#define VFMTCHKTYPE_USE_MORE_TYPES { 0, 0, 0, NULL }
125
126	/**
127	* Format type descriptor.
128	*/
129	typedef struct VFMTCHKDESC
130	{
131	/** The format type. */
132	const char *pszType;
133	/** Recognized format flags (RTSTR_F_XXX). */
134	uint16_t fFmtFlags;
135	/** Recognized format sizes (RTSTR_Z_XXX). */
136	uint16_t fFmtSize;
137	/** Flags (VFMTCHKDESC_F_XXX). */
138	uint32_t fFlags;
139	/** Primary type. */
140	VFMTCHKTYPE Type;
141	/** More recognized types (optional). */
142	PCVFMTCHKTYPE paMoreTypes;
143	} VFMTCHKDESC;
144	typedef VFMTCHKDESC const *PCVFMTCHKDESC;
145
146
147	/*********************************************************************************************************************************
148	* Global Variables *
149	*********************************************************************************************************************************/
150	/** Integer type specs for 'x', 'd', 'u', 'i', ++
151	*
152	* @todo RTUINT32U and friends... The whole type matching thing.
153	*/
154	static VFMTCHKTYPE const g_aIntTypes[] =
155	{
156	{ RTSTR_Z_DEFAULT, VFMTCHKTYPE_Z_INT, 0, VFMTCHKTYPE_NM_INT "\0" VFMTCHKTYPE_NM_UINT "\0" },
157	{ RTSTR_Z_LONG, VFMTCHKTYPE_Z_LONG, 0, VFMTCHKTYPE_NM_LONG "\0" VFMTCHKTYPE_NM_ULONG "\0" },
158	{ RTSTR_Z_LONGLONG, VFMTCHKTYPE_Z_LONGLONG, 0, VFMTCHKTYPE_NM_LONGLONG "\0" VFMTCHKTYPE_NM_ULONGLONG "\0" },
159	{ RTSTR_Z_HALF, VFMTCHKTYPE_Z_SHORT, 0, VFMTCHKTYPE_NM_SHORT "\0" VFMTCHKTYPE_NM_USHORT "\0" },
160	{ RTSTR_Z_HALFHALF, VFMTCHKTYPE_Z_CHAR, 0, VFMTCHKTYPE_NM_SCHAR "\0" VFMTCHKTYPE_NM_UCHAR "\0" VFMTCHKTYPE_NM_CHAR "\0" },
161	{ RTSTR_Z_SIZE, VFMTCHKTYPE_Z_PTR, 0, "size_t\0" "RTUINTPTR\0" "RTINTPTR\0" },
162	{ RTSTR_Z_PTRDIFF, VFMTCHKTYPE_Z_PTR, 0, "ptrdiff_t\0" "RTUINTPTR\0" "RTINTPTR\0" },
163	{ RTSTR_Z_INTMAX, VFMTCHKTYPE_Z_PTR, 0, "uint64_t\0" "int64_t\0" "RTUINT64U\0" VFMTCHKTYPE_NM_LONGLONG "\0" VFMTCHKTYPE_NM_ULONGLONG "\0" },
164	{ RTSTR_Z_MS_I32, sizeof(uint32_t), 0, "uint32_t\0" "int32_t\0" "RTUINT32U\0" },
165	{ RTSTR_Z_MS_I64, sizeof(uint64_t), 0, "uint64_t\0" "int64_t\0" "RTUINT64U\0" },
166	};
167
168	/** String type specs for 's', 'ls' and 'Ls'.
169	*/
170	static VFMTCHKTYPE const g_aStringTypes[] =
171	{
172	{ RTSTR_Z_DEFAULT, VFMTCHKTYPE_Z_PTR, VFMTCHKTYPE_F_CPTR, VFMTCHKTYPE_NM_CHAR "\0" },
173	{ RTSTR_Z_LONG, VFMTCHKTYPE_Z_PTR, VFMTCHKTYPE_F_CPTR, "RTUTF16\0" },
174	{ RTSTR_Z_LONGLONG, VFMTCHKTYPE_Z_PTR, VFMTCHKTYPE_F_CPTR, "RTUNICP\0" },
175	};
176
177	static VFMTCHKDESC const g_aFmtDescs[] =
178	{
179	{ "s",
180	RTSTR_F_LEFT \| RTSTR_F_WIDTH \| RTSTR_F_PRECISION,
181	RTSTR_Z_DEFAULT \| RTSTR_Z_LONG \| RTSTR_Z_LONGLONG,
182	VFMTCHKDESC_F_UNSIGNED,
183	VFMTCHKTYPE_USE_MORE_TYPES,
184	g_aStringTypes
185	},
186	{ "x",
187	RTSTR_F_LEFT \| RTSTR_F_ZEROPAD \| RTSTR_F_SPECIAL \| RTSTR_F_WIDTH \| RTSTR_F_PRECISION,
188	RTSTR_Z_ALL_INT,
189	VFMTCHKDESC_F_UNSIGNED,
190	VFMTCHKTYPE_USE_MORE_TYPES,
191	g_aIntTypes
192	},
193	{ "RX32",
194	RTSTR_F_LEFT \| RTSTR_F_ZEROPAD \| RTSTR_F_SPECIAL \| RTSTR_F_WIDTH \| RTSTR_F_PRECISION,
195	RTSTR_Z_ALL_INT,
196	VFMTCHKDESC_F_UNSIGNED,
197	{ RTSTR_Z_DEFAULT, sizeof(uint32_t), 0, "uint32_t\0" "int32_t\0" },
198	NULL
199	},
200
201
202
203	};
204
205
206	/**
207	* Does the actual format string checking.
208	*
209	* @todo Move this to different file common to both GCC and CLANG later.
210	*
211	* @param pState The format string checking state.
212	* @param pszFmt The format string.
213	*/
214	void MyCheckFormatCString(PVFMTCHKSTATE pState, const char *pszFmt)
215	{
216	dprintf("checker2: \"%s\" at %s:%d col %d\n", pszFmt,
217	MYSTATE_FMT_FILE(pState), MYSTATE_FMT_LINE(pState), MYSTATE_FMT_COLUMN(pState));
218	pState->pszFmt = pszFmt;
219
220	unsigned iArg = 0;
221	for (;;)
222	{
223	/*
224	* Skip to the next argument.
225	* Quits the loop with the first char following the '%' in 'ch'.
226	*/
227	char ch;
228	for (;;)
229	{
230	ch = *pszFmt++;
231	if (ch == '%')
232	{
233	ch = *pszFmt++;
234	if (ch != '%')
235	break;
236	}
237	else if (ch == '\0')
238	{
239	VFmtChkVerifyEndOfArgs(pState, iArg);
240	return;
241	}
242	}
243	const char * const pszPct = pszFmt - 2;
244
245	/*
246	* Flags
247	*/
248	uint32_t fFmtFlags = 0;
249	for (;;)
250	{
251	uint32_t fFlag;
252	switch (ch)
253	{
254	case '#': fFlag = RTSTR_F_SPECIAL; break;
255	case '-': fFlag = RTSTR_F_LEFT; break;
256	case '+': fFlag = RTSTR_F_PLUS; break;
257	case ' ': fFlag = RTSTR_F_BLANK; break;
258	case '0': fFlag = RTSTR_F_ZEROPAD; break;
259	case '\'': fFlag = RTSTR_F_THOUSAND_SEP; break;
260	default: fFlag = 0; break;
261	}
262	if (!fFlag)
263	break;
264	if (fFmtFlags & fFlag)
265	VFmtChkWarnFmt(pState, pszPct, "duplicate flag '%c'", ch);
266	fFmtFlags \|= fFlag;
267	ch = *pszFmt++;
268	}
269
270	/*
271	* Width.
272	*/
273	int cchWidth = -1;
274	if (MY_ISDIGIT(ch))
275	{
276	cchWidth = ch - '0';
277	while ( (ch = *pszFmt++) != '\0'
278	&& MY_ISDIGIT(ch))
279	{
280	cchWidth *= 10;
281	cchWidth += ch - '0';
282	}
283	fFmtFlags \|= RTSTR_F_WIDTH;
284	}
285	else if (ch == '*')
286	{
287	VFmtChkRequireIntArg(pState, pszPct, iArg, "width should be an 'int' sized argument");
288	iArg++;
289	cchWidth = 0;
290	fFmtFlags \|= RTSTR_F_WIDTH;
291	ch = *pszFmt++;
292	}
293
294	/*
295	* Precision
296	*/
297	int cchPrecision = -1;
298	if (ch == '.')
299	{
300	ch = *pszFmt++;
301	if (MY_ISDIGIT(ch))
302	{
303	cchPrecision = ch - '0';
304	while ( (ch = *pszFmt++) != '\0'
305	&& MY_ISDIGIT(ch))
306	{
307	cchPrecision *= 10;
308	cchPrecision += ch - '0';
309	}
310	}
311	else if (ch == '*')
312	{
313	VFmtChkRequireIntArg(pState, pszPct, iArg, "precision should be an 'int' sized argument");
314	iArg++;
315	cchPrecision = 0;
316	ch = *pszFmt++;
317	}
318	else
319	VFmtChkErrFmt(pState, pszPct, "Missing precision value, only got the '.'");
320	if (cchPrecision < 0)
321	{
322	VFmtChkErrFmt(pState, pszPct, "Negative precision value: %d", cchPrecision);
323	cchPrecision = 0;
324	}
325	fFmtFlags \|= RTSTR_F_PRECISION;
326	}
327
328	/*
329	* Argument size.
330	*/
331	uint16_t fFmtSize = RTSTR_Z_DEFAULT;
332	switch (ch)
333	{
334	default:
335	fFmtSize = RTSTR_Z_DEFAULT;
336	break;
337
338	case 'z':
339	fFmtSize = RTSTR_Z_SIZE;
340	ch = *pszFmt++;
341	break;
342	case 'j':
343	fFmtSize = RTSTR_Z_INTMAX;
344	ch = *pszFmt++;
345	break;
346	case 't':
347	fFmtSize = RTSTR_Z_PTRDIFF;
348	ch = *pszFmt++;
349	break;
350
351	case 'l':
352	fFmtSize = RTSTR_Z_LONG;
353	ch = *pszFmt++;
354	if (ch == 'l')
355	{
356	fFmtSize = RTSTR_Z_LONGLONG;
357	ch = *pszFmt++;
358	}
359	break;
360
361	case 'q': /* Used on BSD platforms. */
362	case 'L':
363	fFmtSize = RTSTR_Z_LONGLONG;
364	ch = *pszFmt++;
365	break;
366
367	case 'h':
368	fFmtSize = RTSTR_Z_HALF;
369	ch = *pszFmt++;
370	if (ch == 'h')
371	{
372	fFmtSize = RTSTR_Z_HALFHALF;
373	ch = *pszFmt++;
374	}
375	break;
376
377	case 'I': /* Used by Win32/64 compilers. */
378	if ( pszFmt[0] == '6'
379	&& pszFmt[1] == '4')
380	{
381	pszFmt += 2;
382	fFmtSize = RTSTR_Z_MS_I64;
383	}
384	else if ( pszFmt[0] == '3'
385	&& pszFmt[1] == '2')
386	{
387	pszFmt += 2;
388	fFmtSize = RTSTR_Z_MS_I32;
389	}
390	else
391	{
392	VFmtChkErrFmt(pState, pszFmt, "Unknow format type/size/flag 'I%c'", pszFmt[0]);
393	fFmtSize = RTSTR_Z_INTMAX;
394	}
395	ch = *pszFmt++;
396	break;
397	}
398
399	/*
400	* The type.
401	*/
402	switch (ch)
403	{
404	/*
405	* Nested extensions.
406	*/
407	case 'M': /* replace the format string (not stacked yet). */
408	{
409	if (*pszFmt)
410	VFmtChkErrFmt(pState, pszFmt, "Characters following '%%M' will be ignored");
411	if (fFmtSize != RTSTR_Z_DEFAULT)
412	VFmtChkWarnFmt(pState, pszFmt, "'%%M' does not support any size flags (%#x)", fFmtSize);
413	if (fFmtFlags != 0)
414	VFmtChkWarnFmt(pState, pszFmt, "'%%M' does not support any format flags (%#x)", fFmtFlags);
415	if (VFmtChkRequireStringArg(pState, pszPct, iArg, "'%M' expects a format string"))
416	VFmtChkHandleReplacementFormatString(pState, pszPct, iArg);
417	return;
418	}
419
420	case 'N': /* real nesting. */
421	{
422	if (fFmtSize != RTSTR_Z_DEFAULT)
423	VFmtChkWarnFmt(pState, pszFmt, "'%%N' does not support any size flags (%#x)", fFmtSize);
424	if (fFmtFlags != 0)
425	VFmtChkWarnFmt(pState, pszFmt, "'%%N' does not support any format flags (%#x)", fFmtFlags);
426	VFmtChkRequireStringArg(pState, pszPct, iArg, "'%N' expects a string followed by a va_list pointer");
427	VFmtChkRequireVaListPtrArg(pState, pszPct, iArg + 1, "'%N' expects a string followed by a va_list pointer");
428	iArg += 2;
429	break;
430	}
431
432	case 'R':
433	if ( pszFmt[0] == 'h'
434	&& pszFmt[1] == 'X')
435	{
436	VFmtChkRequirePresentArg(pState, pszPct, iArg, "Expected argument");
437	iArg++;
438	}
439	RT_FALL_THROUGH();
440
441	default:
442	VFmtChkRequirePresentArg(pState, pszPct, iArg, "Expected argument");
443	iArg++;
444	break;
445	}
446	}
447	}
448

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source: vbox/trunk/src/bldprogs/VBoxCompilerPlugInsCommon.cpp@ 96445

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