File crash-fetch-registers-from-lkcd.patch of Package crash

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File crash-fetch-registers-from-lkcd.patch of Package crash (Revision e04e6760935426d37cc333bc823e70e0)

Currently displaying revision e04e6760935426d37cc333bc823e70e0 , Show latest

--- a/Makefile
+++ b/Makefile
@@ -66,7 +66,7 @@ GENERIC_HFILES=defs.h xen_hyper_defs.h
 MCORE_HFILES=va_server.h vas_crash.h
 REDHAT_HFILES=netdump.h diskdump.h xendump.h
 LKCD_DUMP_HFILES=lkcd_vmdump_v1.h lkcd_vmdump_v2_v3.h lkcd_dump_v5.h \
-        lkcd_dump_v7.h lkcd_dump_v8.h lkcd_fix_mem.h
+        lkcd_dump_v7.h lkcd_dump_v8.h
 LKCD_TRACE_HFILES=lkcd_x86_trace.h
 IBM_HFILES=ibm_common.h
 UNWIND_HFILES=unwind.h unwind_i.h rse.h unwind_x86.h unwind_x86_64.h
@@ -406,7 +406,7 @@ unwind_v3.o: ${GENERIC_HFILES} ${UNWIND_
 	cc -c ${CFLAGS} -DREDHAT -DUNWIND_V3 unwind.c -o unwind_v3.o ${WARNING_OPTIONS} ${WARNING_ERROR}
 
 lkcd_fix_mem.o: ${GENERIC_HFILES} ${LKCD_HFILES} lkcd_fix_mem.c
-	cc -c ${CFLAGS} lkcd_fix_mem.c ${WARNING_OPTIONS} ${WARNING_ERROR}
+	cc -c ${CFLAGS} -DMCLX lkcd_fix_mem.c ${WARNING_OPTIONS} ${WARNING_ERROR}
 
 xen_hyper.o: ${GENERIC_HFILES} xen_hyper.c
 	cc -c ${CFLAGS} xen_hyper.c ${WARNING_OPTIONS} ${WARNING_ERROR}
--- a/defs.h
+++ b/defs.h
@@ -19,6 +19,7 @@
 #ifndef GDB_COMMON
 
 #include <stdio.h>
+#include <stddef.h>
 #include <stdarg.h>
 #include <stdint.h>
 #include <termios.h>
@@ -54,6 +55,7 @@
 
 #define TRUE  (1)
 #define FALSE (0)
+#define STR(x)	#x
 
 #ifdef X86
 #define NR_CPUS  (256)
@@ -3826,10 +3828,15 @@ void ppc_dump_machdep_table(ulong);
  */
 
 ulong get_lkcd_switch_stack(ulong);
-int fix_addr_v8(int);
+int fix_addr_v8();
 int fix_addr_v7(int);
 
 /*
+ * lkcd_v8.c
+ */
+int get_lkcd_regs_for_cpu(struct bt_info *bt, ulong *eip, ulong *esp);
+
+/*
  *  ia64.c
  */
 #ifdef IA64
--- a/kernel.c
+++ b/kernel.c
@@ -2102,6 +2102,11 @@ get_lkcd_regs(struct bt_info *bt, ulong 
 		return;
 	}
 
+	/* try to get it from the header */
+	if (get_lkcd_regs_for_cpu(bt, eip, esp) == 0)
+		return;
+
+	/* if that fails: do guessing */
 	sysrq_eip = sysrq_esp = 0;
 
 	for (i = 0, up = (ulong *)bt->stackbuf; i < LONGS_PER_STACK; i++, up++){
--- a/lkcd_dump_v8.h
+++ b/lkcd_dump_v8.h
@@ -235,4 +235,304 @@ typedef struct lkcdinfo_s {
 	int             stack_offset;
 } lkcdinfo_t;
 
+/*
+ *
+ * machine specific dump headers
+ *
+ */
+
+/*
+ * IA64 ---------------------------------------------------------
+ */
+
+#if defined(IA64)
+
+#define DUMP_ASM_MAGIC_NUMBER     0xdeaddeadULL  /* magic number */
+#define DUMP_ASM_VERSION_NUMBER   0x5            /* version 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_ia64 {
+
+        /* 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, (OLD: (struct pt_regs *, NEW: (uint64_t)) */
+	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;
+	struct pt_regs	     dha_smp_regs[NR_CPUS];
+	uint64_t	     dha_smp_current_task[NR_CPUS];
+	uint64_t	     dha_stack[NR_CPUS];
+	uint64_t	     dha_stack_ptr[NR_CPUS];
+
+	/* load address of kernel */
+        uint64_t             dha_kernel_addr;
+
+} __attribute__((packed)) dump_header_asm_ia64_t;
+
+struct dump_CPU_info_ia64 {
+	struct pt_regs	     dha_smp_regs;
+	uint64_t	     dha_smp_current_task;
+	uint64_t	     dha_stack;
+	uint64_t	     dha_stack_ptr;
+} __attribute__((packed)) dump_CPU_info_ia64_t;
+
+typedef struct dump_CPU_info_ia64 dump_CPU_info_t;
+typedef struct __dump_header_asm_ia64 dump_header_asm_t;
+
+#elif defined(X86)
+
+#define DUMP_ASM_MAGIC_NUMBER	0xdeaddeadULL	/* magic number            */
+#define DUMP_ASM_VERSION_NUMBER	0x5	/* version number          */
+
+
+struct pt_regs {
+	long ebx;
+	long ecx;
+	long edx;
+	long esi;
+	long edi;
+	long ebp;
+	long eax;
+	int  xds;
+	int  xes;
+	long orig_eax;
+	long eip;
+	int  xcs;
+	long eflags;
+	long esp;
+	int  xss;
+};
+
+/*
+ * Structure: __dump_header_asm
+ *  Function: This is the header for architecture-specific stuff.  It
+ *            follows right after the dump header.
+ */
+typedef struct __dump_header_asm_i386 {
+	/* 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;
+
+	/* the esp for i386 systems */
+	uint32_t	dha_esp;
+
+	/* the eip for i386 systems */
+	uint32_t	dha_eip;
+
+	/* the dump registers */
+	struct pt_regs	dha_regs;
+
+	/* smp specific */
+	uint32_t	dha_smp_num_cpus;
+	uint32_t	dha_dumping_cpu;
+	struct pt_regs	dha_smp_regs[NR_CPUS];
+	uint32_t	dha_smp_current_task[NR_CPUS];
+	uint32_t	dha_stack[NR_CPUS];
+	uint32_t	dha_stack_ptr[NR_CPUS];
+} __attribute__((packed)) dump_header_asm_i386_t;
+
+/*
+ * CPU specific part of dump_header_asm_t
+ */
+typedef struct dump_CPU_info_i386 {
+	struct pt_regs	dha_smp_regs;
+	uint64_t	dha_smp_current_task;
+	uint64_t	dha_stack;
+	uint64_t	dha_stack_ptr;
+} __attribute__ ((packed)) dump_CPU_info_i386_t;
+
+
+typedef struct __dump_header_asm_i386 dump_header_asm_t;
+typedef struct dump_CPU_info_i386 dump_CPU_info_t;
+
+#elif defined(X86_64)
+
+/* definitions */
+#define DUMP_ASM_MAGIC_NUMBER     0xdeaddeadULL  /* magic number            */
+#define DUMP_ASM_VERSION_NUMBER   0x2            /* version number          */
+
+
+struct pt_regs {
+	unsigned long r15;
+	unsigned long r14;
+	unsigned long r13;
+	unsigned long r12;
+	unsigned long rbp;
+	unsigned long rbx;
+/* arguments: non interrupts/non tracing syscalls only save upto here*/
+ 	unsigned long r11;
+	unsigned long r10;
+	unsigned long r9;
+	unsigned long r8;
+	unsigned long rax;
+	unsigned long rcx;
+	unsigned long rdx;
+	unsigned long rsi;
+	unsigned long rdi;
+	unsigned long orig_rax;
+/* end of arguments */
+/* cpu exception frame or undefined */
+	unsigned long rip;
+	unsigned long cs;
+	unsigned long eflags;
+	unsigned long rsp;
+	unsigned long ss;
+/* top of stack page */
+};
+
+/*
+ * 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_x86_64 {
+
+        /* 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;
+
+	/* the dump registers */
+	struct pt_regs       dha_regs;
+
+	/* smp specific */
+	uint32_t	     dha_smp_num_cpus;
+	int		     dha_dumping_cpu;
+	struct pt_regs	     dha_smp_regs[NR_CPUS];
+	uint64_t	     dha_smp_current_task[NR_CPUS];
+	uint64_t	     dha_stack[NR_CPUS];
+	uint64_t	     dha_stack_ptr[NR_CPUS];
+} __attribute__((packed)) dump_header_asm_t_x86_64;
+
+
+/*
+ * CPU specific part of dump_header_asm_t
+ */
+typedef struct dump_CPU_info_x86_64 {
+	struct pt_regs	     dha_smp_regs;
+	uint64_t	     dha_smp_current_task;
+	uint64_t	     dha_stack;
+	uint64_t	     dha_stack_ptr;
+} __attribute__ ((packed)) dump_CPU_info_x86_64_t;
+
+typedef struct dump_CPU_info_x86_64 dump_CPU_info_t;
+typedef struct __dump_header_asm_x86_64 dump_header_asm_t;
+
+
+#else
+
+#define HAVE_NO_DUMP_HEADER_ASM 1
+
+#endif
+
 #endif /* _DUMP_H */
--- a/lkcd_fix_mem.c
+++ b/lkcd_fix_mem.c
@@ -20,21 +20,13 @@
 
 #define LKCD_COMMON
 #include "defs.h"
-#include "lkcd_fix_mem.h"
+#include "lkcd_dump_v8.h"
 
 static int fix_addr(dump_header_asm_t *); 
     
 int
-fix_addr_v8(int fd)
+fix_addr_v8(dump_header_asm_t *dha)
 {
-    static dump_header_asm_t dump_header_asm_v8 = { 0 };
-    dump_header_asm_t *dha;
-    dha = &dump_header_asm_v8;
-    
-    if (read(lkcd->fd, dha, sizeof(dump_header_asm_t)) !=
-	    sizeof(dump_header_asm_t))
-	return -1;
-    
     fix_addr(dha);
 
     return 0;
@@ -59,14 +51,6 @@ fix_addr_v7(int fd)
 static int
 fix_addr(dump_header_asm_t *dha)  
 {
-    
-
-    if (dha->dha_header_size != sizeof(dump_header_asm_t)) {
-	error(INFO, "LKCD machine specific dump header doesn't match crash version\n");
-	error(INFO, "traceback of currently executing threads may not work\n\n");
-    }
-    
-
     lkcd->dump_header_asm = dha;
     
 
@@ -83,7 +67,7 @@ fix_addr(dump_header_asm_t *dha)  
 		if (dha->dha_stack[i] && dha->dha_smp_current_task[i]) {
 		    lkcd->fix_addr[i].task = (ulong)dha->dha_smp_current_task[i];
 		    lkcd->fix_addr[i].saddr = (ulong)dha->dha_stack[i]; 
-		    lkcd->fix_addr[i].sw = (ulong)dha->dha_switch_stack[i];
+		    lkcd->fix_addr[i].sw = (ulong)dha->dha_stack_ptr[i];
 		    /* remember the highest non-zero entry */
 		    lkcd->fix_addr_num = i + 1;
 		} else {
--- a/lkcd_fix_mem.h
+++ /dev/null
@@ -1,295 +0,0 @@
-#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
--- a/lkcd_v8.c
+++ b/lkcd_v8.c
@@ -23,11 +23,187 @@
 #include "lkcd_dump_v8.h"				/* REMIND */
 
 static dump_header_t dump_header_v8 = { 0 };
-// static dump_header_asm_t dump_header_asm_v8 = { 0 };
+#ifndef HAVE_NO_DUMP_HEADER_ASM
+static dump_header_asm_t dump_header_asm_v8 = { 0 };
+#endif
 static dump_page_t dump_page = { 0 };
 static void mclx_cache_page_headers_v8(void);
 static off_t lkcd_offset_to_first_page = LKCD_OFFSET_TO_FIRST_PAGE;
 
+#if defined(X86_64)
+
+int
+get_lkcd_regs_for_cpu_arch(int cpu, ulong *eip, ulong *esp)
+{
+	if (eip)
+		*eip = dump_header_asm_v8.dha_smp_regs[cpu].rip;
+	if (esp)
+		*esp = dump_header_asm_v8.dha_smp_regs[cpu].rsp;
+
+	return 0;
+}
+
+#elif defined(X86)
+
+int
+get_lkcd_regs_for_cpu_arch(int cpu, ulong *eip, ulong *esp)
+{
+	if (eip)
+		*eip = dump_header_asm_v8.dha_smp_regs[cpu].eip;
+	if (esp)
+		*esp = dump_header_asm_v8.dha_smp_regs[cpu].esp;
+
+	return 0;
+}
+
+#else
+
+int
+get_lkcd_regs_for_cpu_arch(int cpu, ulong *eip, ulong *esp)
+{
+	return -1;
+}
+
+#endif
+
+
+
+int
+get_lkcd_regs_for_cpu(struct bt_info *bt, ulong *eip, ulong *esp)
+{
+	int cpu;
+
+	if (!bt || !bt->tc) {
+		fprintf(stderr, "get_lkcd_regs_for_cpu: invalid tc\n", cpu);
+		return -EINVAL;
+	}
+
+	cpu = bt->tc->processor;
+
+	if (cpu >= NR_CPUS) {
+		fprintf(stderr, "get_lkcd_regs_for_cpu, cpu (%d) too high\n", cpu);
+		return -EINVAL;
+	}
+
+	return get_lkcd_regs_for_cpu_arch(cpu, eip, esp);
+}
+
+
+#ifndef HAVE_NO_DUMP_HEADER_ASM
+int
+lkcd_dump_init_v8_arch(dump_header_t *dh)
+{
+	off_t 			ret_of;
+	ssize_t 		ret_sz;
+	uint32_t 		hdr_size, offset, nr_cpus;
+	dump_header_asm_t 	arch_hdr;
+	char 			*hdr_buf = NULL;
+
+	ret_of = lseek(lkcd->fd, dh->dh_header_size +
+			offsetof(dump_header_asm_t, dha_header_size),
+			SEEK_SET);
+	if (ret_of < 0) {
+		perror("lseek failed in " __FILE__ ":" STR(__LINE__));
+		goto err;
+	}
+
+	ret_sz = read(lkcd->fd, (char *)&hdr_size, sizeof(hdr_size));
+	if (ret_sz != sizeof(hdr_size)) {
+		perror("Reading hdr_size failed in " __FILE__ ":" STR(__LINE__));
+		goto err;
+	}
+
+	ret_of = lseek(lkcd->fd, dh->dh_header_size, SEEK_SET);
+	if (ret_of < 0) {
+		perror("lseek failed in " __FILE__ ":" STR(__LINE__));
+		goto err;
+	}
+
+	hdr_buf = (char *)malloc(hdr_size);
+	if (!hdr_buf) {
+		perror("Could not allocate memory for dump header\n");
+		goto err;
+	}
+
+	ret_sz = read(lkcd->fd, (char *)hdr_buf, hdr_size);
+	if (ret_sz != hdr_size) {
+		perror("Could not read header " __FILE__ ":" STR(__LINE__));
+		goto err;
+	}
+
+
+	/*
+         * Though we have KL_NR_CPUS is 128, the header size is different
+         * CONFIG_NR_CPUS might be different in the kernel. Hence, need
+         * to find out how many CPUs are configured.
+         */
+        offset = offsetof(dump_header_asm_t, dha_smp_regs[0]);
+        nr_cpus = (hdr_size - offset) / sizeof(dump_CPU_info_t);
+
+	/* check for CPU overflow */
+	if (nr_cpus > NR_CPUS) {
+		fprintf(stderr, "CPU number too high %d (%s:%s)\n",
+				nr_cpus, __FILE__, __LINE__);
+		goto err;
+	}
+
+	/* parts that don't depend on the number of CPUs */
+	memcpy(&arch_hdr, (void *)hdr_buf, offset);
+
+	/* registers */
+	memcpy(&arch_hdr.dha_smp_regs, (void *)&hdr_buf[offset],
+			nr_cpus * sizeof(struct pt_regs));
+	offset += nr_cpus * sizeof(struct pt_regs);
+
+	/* current task */
+	memcpy(&arch_hdr.dha_smp_current_task, (void *)&hdr_buf[offset],
+			nr_cpus * sizeof(&arch_hdr.dha_smp_current_task[0]));
+	offset += nr_cpus * sizeof(&arch_hdr.dha_smp_current_task[0]);
+
+	/* stack */
+	memcpy(&arch_hdr.dha_stack, (void *)&hdr_buf[offset],
+			nr_cpus * sizeof(&arch_hdr.dha_stack[0]));
+	offset += nr_cpus * sizeof(&arch_hdr.dha_stack[0]);
+
+	/* stack_ptr */
+	memcpy(&arch_hdr.dha_stack_ptr, (void *)&hdr_buf[offset],
+			nr_cpus * sizeof(&arch_hdr.dha_stack_ptr[0]));
+	offset += nr_cpus * sizeof(&arch_hdr.dha_stack_ptr[0]);
+
+	if (arch_hdr.dha_magic_number != DUMP_ASM_MAGIC_NUMBER) {
+		fprintf(stderr, "Invalid magic number for x86_64\n");
+		goto err;
+	}
+
+	/*
+	 * read the kernel load address on IA64 -- other architectures have
+	 * no relocatable kernel at the lifetime of LKCD
+	 */
+#ifdef IA64
+	memcpy(&arch_hdr.dha_kernel_addr, (void *)&hdr_buf[offset], sizeof(uint64_t));
+#endif
+
+	memcpy(&dump_header_asm_v8, &arch_hdr, sizeof(dump_header_asm_t));
+
+	return 0;
+
+err:
+	free(hdr_buf);
+	return -1;
+}
+
+#else /* architecture that has no lkcd_dump_init_v8 */
+
+int
+lkcd_dump_init_v8_arch(dump_header_t *dh)
+{
+	return 0;
+}
+
+#endif
+
+
+
 /*
  *  Verify and initialize the LKCD environment, storing the common data
  *  in the global lkcd_environment structure.
@@ -69,8 +245,14 @@ lkcd_dump_init_v8(FILE *fp, int fd, char
         lkcd->dump_header = dh;
 	if (lkcd->debug) 
 		dump_lkcd_environment(LKCD_DUMP_HEADER_ONLY);
+
+	if (lkcd_dump_init_v8_arch(dh) != 0) {
+		fprintf(stderr, "Warning: Failed to initialise "
+				"arch specific dump code\n");
+	}
+
 #ifdef IA64
-	if ( (fix_addr_v8(fd) == -1) )
+	if ( (fix_addr_v8(&dump_header_asm_v8) == -1) )
 	    return FALSE;
 #endif
 
--- a/netdump.c
+++ b/netdump.c
@@ -1757,7 +1757,6 @@ struct x86_64_user_regs_struct {
         unsigned long fs_base, gs_base;
         unsigned long ds,es,fs,gs;
 };
-#define offsetof(TYPE, MEMBER) ((ulong)&((TYPE *)0)->MEMBER)
 
 void 
 get_netdump_regs_x86_64(struct bt_info *bt, ulong *ripp, ulong *rspp)

Places

File crash-fetch-registers-from-lkcd.patch of Package crash (Revision e04e6760935426d37cc333bc823e70e0)

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