diff options
author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-08-01 14:42:05 -0400 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-08-01 14:42:05 -0400 |
commit | c6557e7f2b6ae76a44653d38f835174074c42e05 (patch) | |
tree | da619a76b309cb1cd259d082af768a83cfcd6d52 /include/asm-s390/user.h | |
parent | ab4227cb2d936886069ef1056c02500d05beb15d (diff) |
[S390] move include/asm-s390 to arch/s390/include/asm
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/user.h')
-rw-r--r-- | include/asm-s390/user.h | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/include/asm-s390/user.h b/include/asm-s390/user.h deleted file mode 100644 index 1b050e35fdc6..000000000000 --- a/include/asm-s390/user.h +++ /dev/null | |||
@@ -1,76 +0,0 @@ | |||
1 | /* | ||
2 | * include/asm-s390/user.h | ||
3 | * | ||
4 | * S390 version | ||
5 | * | ||
6 | * Derived from "include/asm-i386/usr.h" | ||
7 | */ | ||
8 | |||
9 | #ifndef _S390_USER_H | ||
10 | #define _S390_USER_H | ||
11 | |||
12 | #include <asm/page.h> | ||
13 | #include <asm/ptrace.h> | ||
14 | /* Core file format: The core file is written in such a way that gdb | ||
15 | can understand it and provide useful information to the user (under | ||
16 | linux we use the 'trad-core' bfd). There are quite a number of | ||
17 | obstacles to being able to view the contents of the floating point | ||
18 | registers, and until these are solved you will not be able to view the | ||
19 | contents of them. Actually, you can read in the core file and look at | ||
20 | the contents of the user struct to find out what the floating point | ||
21 | registers contain. | ||
22 | The actual file contents are as follows: | ||
23 | UPAGE: 1 page consisting of a user struct that tells gdb what is present | ||
24 | in the file. Directly after this is a copy of the task_struct, which | ||
25 | is currently not used by gdb, but it may come in useful at some point. | ||
26 | All of the registers are stored as part of the upage. The upage should | ||
27 | always be only one page. | ||
28 | DATA: The data area is stored. We use current->end_text to | ||
29 | current->brk to pick up all of the user variables, plus any memory | ||
30 | that may have been malloced. No attempt is made to determine if a page | ||
31 | is demand-zero or if a page is totally unused, we just cover the entire | ||
32 | range. All of the addresses are rounded in such a way that an integral | ||
33 | number of pages is written. | ||
34 | STACK: We need the stack information in order to get a meaningful | ||
35 | backtrace. We need to write the data from (esp) to | ||
36 | current->start_stack, so we round each of these off in order to be able | ||
37 | to write an integer number of pages. | ||
38 | The minimum core file size is 3 pages, or 12288 bytes. | ||
39 | */ | ||
40 | |||
41 | |||
42 | /* | ||
43 | * This is the old layout of "struct pt_regs", and | ||
44 | * is still the layout used by user mode (the new | ||
45 | * pt_regs doesn't have all registers as the kernel | ||
46 | * doesn't use the extra segment registers) | ||
47 | */ | ||
48 | |||
49 | /* When the kernel dumps core, it starts by dumping the user struct - | ||
50 | this will be used by gdb to figure out where the data and stack segments | ||
51 | are within the file, and what virtual addresses to use. */ | ||
52 | struct user { | ||
53 | /* We start with the registers, to mimic the way that "memory" is returned | ||
54 | from the ptrace(3,...) function. */ | ||
55 | struct user_regs_struct regs; /* Where the registers are actually stored */ | ||
56 | /* The rest of this junk is to help gdb figure out what goes where */ | ||
57 | unsigned long int u_tsize; /* Text segment size (pages). */ | ||
58 | unsigned long int u_dsize; /* Data segment size (pages). */ | ||
59 | unsigned long int u_ssize; /* Stack segment size (pages). */ | ||
60 | unsigned long start_code; /* Starting virtual address of text. */ | ||
61 | unsigned long start_stack; /* Starting virtual address of stack area. | ||
62 | This is actually the bottom of the stack, | ||
63 | the top of the stack is always found in the | ||
64 | esp register. */ | ||
65 | long int signal; /* Signal that caused the core dump. */ | ||
66 | unsigned long u_ar0; /* Used by gdb to help find the values for */ | ||
67 | /* the registers. */ | ||
68 | unsigned long magic; /* To uniquely identify a core file */ | ||
69 | char u_comm[32]; /* User command that was responsible */ | ||
70 | }; | ||
71 | #define NBPG PAGE_SIZE | ||
72 | #define UPAGES 1 | ||
73 | #define HOST_TEXT_START_ADDR (u.start_code) | ||
74 | #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) | ||
75 | |||
76 | #endif /* _S390_USER_H */ | ||