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user.h
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1 #ifndef _ASM_IA64_USER_H
2 #define _ASM_IA64_USER_H
3 
4 /*
5  * Core file format: The core file is written in such a way that gdb
6  * can understand it and provide useful information to the user (under
7  * linux we use the `trad-core' bfd). The file contents are as
8  * follows:
9  *
10  * upage: 1 page consisting of a user struct that tells gdb
11  * what is present in the file. Directly after this is a
12  * copy of the task_struct, which is currently not used by gdb,
13  * but it may come in handy at some point. All of the registers
14  * are stored as part of the upage. The upage should always be
15  * only one page long.
16  * data: The data segment follows next. We use current->end_text to
17  * current->brk to pick up all of the user variables, plus any memory
18  * that may have been sbrk'ed. No attempt is made to determine if a
19  * page is demand-zero or if a page is totally unused, we just cover
20  * the entire range. All of the addresses are rounded in such a way
21  * that an integral number of pages is written.
22  * stack: We need the stack information in order to get a meaningful
23  * backtrace. We need to write the data from usp to
24  * current->start_stack, so we round each of these in order to be able
25  * to write an integer number of pages.
26  *
27  * Modified 1998, 1999, 2001
28  * David Mosberger-Tang <[email protected]>, Hewlett-Packard Co
29  */
30 
31 #include <linux/ptrace.h>
32 #include <linux/types.h>
33 
34 #include <asm/page.h>
35 
36 #define EF_SIZE 3072 /* XXX fix me */
37 
38 struct user {
39  unsigned long regs[EF_SIZE/8+32]; /* integer and fp regs */
40  size_t u_tsize; /* text size (pages) */
41  size_t u_dsize; /* data size (pages) */
42  size_t u_ssize; /* stack size (pages) */
43  unsigned long start_code; /* text starting address */
44  unsigned long start_data; /* data starting address */
45  unsigned long start_stack; /* stack starting address */
46  long int signal; /* signal causing core dump */
47  unsigned long u_ar0; /* help gdb find registers */
48  unsigned long magic; /* identifies a core file */
49  char u_comm[32]; /* user command name */
50 };
51 
52 #define NBPG PAGE_SIZE
53 #define UPAGES 1
54 #define HOST_TEXT_START_ADDR (u.start_code)
55 #define HOST_DATA_START_ADDR (u.start_data)
56 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
57 
58 #endif /* _ASM_IA64_USER_H */