diff options
author | David S. Miller <davem@davemloft.net> | 2008-09-08 19:59:05 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-09-08 19:59:05 -0400 |
commit | 17dce5dfe38ae2fb359b61e855f5d8a3a8b7892b (patch) | |
tree | 88bb1fcf84f9ebfa4299c9a8dcd9e6330b358446 /arch/blackfin/include/asm/user.h | |
parent | 712d6954e3998d0de2840d8130941e8042541246 (diff) | |
parent | 82a28c794f27aac17d7a3ebd7f14d731a11a5532 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
net/mac80211/mlme.c
Diffstat (limited to 'arch/blackfin/include/asm/user.h')
-rw-r--r-- | arch/blackfin/include/asm/user.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/user.h b/arch/blackfin/include/asm/user.h new file mode 100644 index 000000000000..afe6a0e1f7ce --- /dev/null +++ b/arch/blackfin/include/asm/user.h | |||
@@ -0,0 +1,89 @@ | |||
1 | #ifndef _BFIN_USER_H | ||
2 | #define _BFIN_USER_H | ||
3 | |||
4 | /* Changes by Tony Kou Lineo, Inc. July, 2001 | ||
5 | * | ||
6 | * Based include/asm-m68knommu/user.h | ||
7 | * | ||
8 | */ | ||
9 | |||
10 | /* Core file format: The core file is written in such a way that gdb | ||
11 | can understand it and provide useful information to the user (under | ||
12 | linux we use the 'trad-core' bfd). There are quite a number of | ||
13 | obstacles to being able to view the contents of the floating point | ||
14 | registers, and until these are solved you will not be able to view the | ||
15 | contents of them. Actually, you can read in the core file and look at | ||
16 | the contents of the user struct to find out what the floating point | ||
17 | registers contain. | ||
18 | The actual file contents are as follows: | ||
19 | UPAGE: 1 page consisting of a user struct that tells gdb what is present | ||
20 | in the file. Directly after this is a copy of the task_struct, which | ||
21 | is currently not used by gdb, but it may come in useful at some point. | ||
22 | All of the registers are stored as part of the upage. The upage should | ||
23 | always be only one page. | ||
24 | DATA: The data area is stored. We use current->end_text to | ||
25 | current->brk to pick up all of the user variables, plus any memory | ||
26 | that may have been malloced. No attempt is made to determine if a page | ||
27 | is demand-zero or if a page is totally unused, we just cover the entire | ||
28 | range. All of the addresses are rounded in such a way that an integral | ||
29 | number of pages is written. | ||
30 | STACK: We need the stack information in order to get a meaningful | ||
31 | backtrace. We need to write the data from (esp) to | ||
32 | current->start_stack, so we round each of these off in order to be able | ||
33 | to write an integer number of pages. | ||
34 | The minimum core file size is 3 pages, or 12288 bytes. | ||
35 | */ | ||
36 | struct user_bfinfp_struct { | ||
37 | }; | ||
38 | |||
39 | /* This is the old layout of "struct pt_regs" as of Linux 1.x, and | ||
40 | is still the layout used by user (the new pt_regs doesn't have | ||
41 | all registers). */ | ||
42 | struct user_regs_struct { | ||
43 | long r0, r1, r2, r3, r4, r5, r6, r7; | ||
44 | long p0, p1, p2, p3, p4, p5, usp, fp; | ||
45 | long i0, i1, i2, i3; | ||
46 | long l0, l1, l2, l3; | ||
47 | long b0, b1, b2, b3; | ||
48 | long m0, m1, m2, m3; | ||
49 | long a0w, a1w; | ||
50 | long a0x, a1x; | ||
51 | unsigned long rets; | ||
52 | unsigned long astat; | ||
53 | unsigned long pc; | ||
54 | unsigned long orig_p0; | ||
55 | }; | ||
56 | |||
57 | /* When the kernel dumps core, it starts by dumping the user struct - | ||
58 | this will be used by gdb to figure out where the data and stack segments | ||
59 | are within the file, and what virtual addresses to use. */ | ||
60 | |||
61 | struct user { | ||
62 | /* We start with the registers, to mimic the way that "memory" is returned | ||
63 | from the ptrace(3,...) function. */ | ||
64 | |||
65 | struct user_regs_struct regs; /* Where the registers are actually stored */ | ||
66 | |||
67 | /* The rest of this junk is to help gdb figure out what goes where */ | ||
68 | unsigned long int u_tsize; /* Text segment size (pages). */ | ||
69 | unsigned long int u_dsize; /* Data segment size (pages). */ | ||
70 | unsigned long int u_ssize; /* Stack segment size (pages). */ | ||
71 | unsigned long start_code; /* Starting virtual address of text. */ | ||
72 | unsigned long start_stack; /* Starting virtual address of stack area. | ||
73 | This is actually the bottom of the stack, | ||
74 | the top of the stack is always found in the | ||
75 | esp register. */ | ||
76 | long int signal; /* Signal that caused the core dump. */ | ||
77 | int reserved; /* No longer used */ | ||
78 | unsigned long u_ar0; | ||
79 | /* Used by gdb to help find the values for */ | ||
80 | /* the registers. */ | ||
81 | unsigned long magic; /* To uniquely identify a core file */ | ||
82 | char u_comm[32]; /* User command that was responsible */ | ||
83 | }; | ||
84 | #define NBPG PAGE_SIZE | ||
85 | #define UPAGES 1 | ||
86 | #define HOST_TEXT_START_ADDR (u.start_code) | ||
87 | #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) | ||
88 | |||
89 | #endif | ||