File: lkcd_fix_mem.h

package info (click to toggle)
crash 4.0-6.3-1
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 27,120 kB
  • ctags: 16,141
  • sloc: ansic: 128,311; makefile: 23,430; yacc: 436; lex: 291
file content (297 lines) | stat: -rw-r--r-- 10,742 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
/* OBSOLETE */

#ifdef IA64

#define UTSNAME_ENTRY_SZ 65

/* necessary header definitions in all cases */
#define DUMP_KIOBUF_NUMBER  0xdeadbeef  /* special number for kiobuf maps   */

/* size of a dump header page */
#define DUMP_PAGE_SZ        64 * 1024  /* size of dump page buffer          */

/* header definitions for s390 dump */
#define DUMP_MAGIC_S390     0xa8190173618f23fdULL  /* s390 magic number     */
#define S390_DUMP_HEADER_SIZE     4096

/* standard header definitions */
#define DUMP_MAGIC_NUMBER   0xa8190173618f23edULL  /* dump magic number     */
#define DUMP_MAGIC_LIVE     0xa8190173618f23cdULL  /* live magic number     */
#define DUMP_VERSION_NUMBER   0x5       /* dump version number              */
#define DUMP_PANIC_LEN        0x100     /* dump panic string length         */

/* dump levels - type specific stuff added later -- add as necessary */
#define DUMP_LEVEL_NONE        0x0      /* no dumping at all -- just bail   */
#define DUMP_LEVEL_HEADER      0x1      /* kernel dump header only          */
#define DUMP_LEVEL_KERN        0x2      /* dump header and kernel pages     */
#define DUMP_LEVEL_USED        0x4      /* dump header, kernel/user pages   */
#define DUMP_LEVEL_ALL         0x8      /* dump header, all memory pages    */

/* dump compression options -- add as necessary */
#define DUMP_COMPRESS_NONE     0x0      /* don't compress this dump         */
#define DUMP_COMPRESS_RLE      0x1      /* use RLE compression              */
#define DUMP_COMPRESS_GZIP     0x2      /* use GZIP compression             */

/* dump flags - any dump-type specific flags -- add as necessary */
#define DUMP_FLAGS_NONE        0x0      /* no flags are set for this dump   */
#define DUMP_FLAGS_NONDISRUPT  0x1      /* try to keep running after dump   */

/* dump header flags -- add as necessary */
#define DUMP_DH_FLAGS_NONE     0x0      /* no flags set (error condition!)  */
#define DUMP_DH_RAW            0x1      /* raw page (no compression)        */
#define DUMP_DH_COMPRESSED     0x2      /* page is compressed               */
#define DUMP_DH_END            0x4      /* end marker on a full dump        */

/* names for various dump tunables (they are now all read-only) */
#define DUMP_ROOT_NAME         "sys/dump"
#define DUMP_DEVICE_NAME       "dump_device"
#define DUMP_COMPRESS_NAME     "dump_compress"
#define DUMP_LEVEL_NAME        "dump_level"
#define DUMP_FLAGS_NAME        "dump_flags"

/* page size for gzip compression -- buffered beyond PAGE_SIZE slightly */
#define DUMP_DPC_PAGE_SIZE     (PAGE_SIZE + 512)

/* dump ioctl() control options */
#define DIOSDUMPDEV		1       /* set the dump device              */
#define DIOGDUMPDEV		2       /* get the dump device              */
#define DIOSDUMPLEVEL		3       /* set the dump level               */
#define DIOGDUMPLEVEL		4       /* get the dump level               */
#define DIOSDUMPFLAGS		5       /* set the dump flag parameters     */
#define DIOGDUMPFLAGS		6       /* get the dump flag parameters     */
#define DIOSDUMPCOMPRESS	7       /* set the dump compress level      */
#define DIOGDUMPCOMPRESS	8       /* get the dump compress level      */

/* the major number used for the dumping device */
#ifndef DUMP_MAJOR
#define DUMP_MAJOR              227
#endif

/*
 * Structure: dump_header_t
 *  Function: This is the header dumped at the top of every valid crash
 *            dump.  
 *            easy reassembly of each crash dump page.  The address bits
 *            are split to make things easier for 64-bit/32-bit system
 *            conversions.
 */
typedef struct _dump_header_s {
	/* the dump magic number -- unique to verify dump is valid */
	uint64_t             dh_magic_number;

	/* the version number of this dump */
	uint32_t             dh_version;

	/* the size of this header (in case we can't read it) */
	uint32_t             dh_header_size;

	/* the level of this dump (just a header?) */
	uint32_t             dh_dump_level;

	/* the size of a Linux memory page (4K, 8K, 16K, etc.) */
	uint32_t             dh_page_size;

	/* the size of all physical memory */
	uint64_t             dh_memory_size;

	/* the start of physical memory */
	uint64_t             dh_memory_start;

	/* the end of physical memory */
	uint64_t             dh_memory_end;

	/* the number of pages in this dump specifically */
	uint32_t             dh_num_pages;

	/* the panic string, if available */
	char                 dh_panic_string[DUMP_PANIC_LEN];

	/* timeval depends on architecture, two long values */
	struct {
		uint64_t tv_sec;
		uint64_t tv_usec;
	} dh_time; /* the time of the system crash */

	/* the NEW utsname (uname) information -- in character form */
	/* we do this so we don't have to include utsname.h         */
	/* plus it helps us be more architecture independent        */
	/* now maybe one day soon they'll make the [65] a #define!  */
	char                 dh_utsname_sysname[65];
	char                 dh_utsname_nodename[65];
	char                 dh_utsname_release[65];
	char                 dh_utsname_version[65];
	char                 dh_utsname_machine[65];
	char                 dh_utsname_domainname[65];

	/* the address of current task (OLD = task_struct *, NEW = void *) */
	uint64_t             dh_current_task;

	/* what type of compression we're using in this dump (if any) */
	uint32_t             dh_dump_compress;

	/* any additional flags */
	uint32_t             dh_dump_flags;

	/* any additional flags */
	uint32_t             dh_dump_device;

} __attribute__((packed)) dump_header_t;

/*
 * Structure: dump_page_t
 *  Function: To act as the header associated to each physical page of
 *            memory saved in the system crash dump.  This allows for
 *            easy reassembly of each crash dump page.  The address bits
 *            are split to make things easier for 64-bit/32-bit system
 *            conversions.
 */
typedef struct _dump_page_s {
    
	/* the address of this dump page */
	uint64_t             dp_address;

	/* the size of this dump page */
	uint32_t             dp_size;

	/* flags (currently DUMP_COMPRESSED, DUMP_RAW or DUMP_END) */
	uint32_t             dp_flags;
} __attribute__((packed)) dump_page_t;

/*
 * This structure contains information needed for the lkcdutils
 * package (particularly lcrash) to determine what information is
 * associated to this kernel, specifically.
 */
typedef struct lkcdinfo_s {
	int             arch;
	int             ptrsz;
	int             byte_order;
	int             linux_release;
	int             page_shift;
	int             page_size;
	uint64_t        page_mask;
	uint64_t        page_offset;
	int             stack_offset;
} lkcdinfo_t;

#define DUMP_ASM_MAGIC_NUMBER     0xdeaddeadULL  /* magic number */


struct pt_regs {
	/* The following registers are saved by SAVE_MIN: */
	unsigned long b6;		/* scratch */
	unsigned long b7;		/* scratch */

	unsigned long ar_csd;           /* used by cmp8xchg16 (scratch) */
	unsigned long ar_ssd;           /* reserved for future use (scratch) */

	unsigned long r8;		/* scratch (return value register 0) */
	unsigned long r9;		/* scratch (return value register 1) */
	unsigned long r10;		/* scratch (return value register 2) */
	unsigned long r11;		/* scratch (return value register 3) */

	unsigned long cr_ipsr;		/* interrupted task's psr */
	unsigned long cr_iip;		/* interrupted task's instruction pointer */
	unsigned long cr_ifs;		/* interrupted task's function state */

	unsigned long ar_unat;		/* interrupted task's NaT register (preserved) */
	unsigned long ar_pfs;		/* prev function state  */
	unsigned long ar_rsc;		/* RSE configuration */
	/* The following two are valid only if cr_ipsr.cpl > 0: */
	unsigned long ar_rnat;		/* RSE NaT */
	unsigned long ar_bspstore;	/* RSE bspstore */

	unsigned long pr;		/* 64 predicate registers (1 bit each) */
	unsigned long b0;		/* return pointer (bp) */
	unsigned long loadrs;		/* size of dirty partition << 16 */

	unsigned long r1;		/* the gp pointer */
	unsigned long r12;		/* interrupted task's memory stack pointer */
	unsigned long r13;		/* thread pointer */

	unsigned long ar_fpsr;		/* floating point status (preserved) */
	unsigned long r15;		/* scratch */

	/* The remaining registers are NOT saved for system calls.  */

	unsigned long r14;		/* scratch */
	unsigned long r2;		/* scratch */
	unsigned long r3;		/* scratch */

	/* The following registers are saved by SAVE_REST: */
	unsigned long r16;		/* scratch */
	unsigned long r17;		/* scratch */
	unsigned long r18;		/* scratch */
	unsigned long r19;		/* scratch */
	unsigned long r20;		/* scratch */
	unsigned long r21;		/* scratch */
	unsigned long r22;		/* scratch */
	unsigned long r23;		/* scratch */
	unsigned long r24;		/* scratch */
	unsigned long r25;		/* scratch */
	unsigned long r26;		/* scratch */
	unsigned long r27;		/* scratch */
	unsigned long r28;		/* scratch */
	unsigned long r29;		/* scratch */
	unsigned long r30;		/* scratch */
	unsigned long r31;		/* scratch */

	unsigned long ar_ccv;		/* compare/exchange value (scratch) */

	/*
	 * Floating point registers that the kernel considers scratch:
	 */
	struct ia64_fpreg f6;		/* scratch */
	struct ia64_fpreg f7;		/* scratch */
	struct ia64_fpreg f8;		/* scratch */
	struct ia64_fpreg f9;		/* scratch */
	struct ia64_fpreg f10;		/* scratch */
	struct ia64_fpreg f11;		/* scratch */
};



/*
 * Structure: dump_header_asm_t
 *  Function: This is the header for architecture-specific stuff.  It
 *            follows right after the dump header.
 *
 */
typedef struct _dump_header_asm_s {

        /* the dump magic number -- unique to verify dump is valid */
        uint64_t             dha_magic_number;

        /* the version number of this dump */
        uint32_t             dha_version;

        /* the size of this header (in case we can't read it) */
        uint32_t             dha_header_size;

        /* pointer to pt_regs */
//	struct pt_regs      *dha_pt_regs; // version 4 changed this
	uint64_t             dha_pt_regs;

	/* the dump registers */
	struct pt_regs       dha_regs;

        /* the rnat register saved after flushrs */
        uint64_t             dha_rnat;

	/* the pfs register saved after flushrs */
	uint64_t             dha_pfs;

	/* the bspstore register saved after flushrs */
	uint64_t             dha_bspstore;

	/* smp specific */
	uint32_t	     dha_smp_num_cpus;
	uint32_t 	     dha_dumping_cpu;	// v4 changed this
	struct pt_regs	     dha_smp_regs[NR_CPUS];
	uint64_t 	     dha_smp_current_task[NR_CPUS]; // v4 changed this 
	uint64_t     	     dha_stack[NR_CPUS];  // v4 changed this 
	uint64_t     	     dha_switch_stack[NR_CPUS]; // v4 changed this 

} __attribute__((packed)) dump_header_asm_t;

#endif // IA64