diff options
Diffstat (limited to 'include/asm-m68k/user.h')
-rw-r--r-- | include/asm-m68k/user.h | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/include/asm-m68k/user.h b/include/asm-m68k/user.h deleted file mode 100644 index f1f478d6e050..000000000000 --- a/include/asm-m68k/user.h +++ /dev/null | |||
@@ -1,86 +0,0 @@ | |||
1 | #ifndef _M68K_USER_H | ||
2 | #define _M68K_USER_H | ||
3 | |||
4 | /* Core file format: The core file is written in such a way that gdb | ||
5 | can understand it and provide useful information to the user (under | ||
6 | linux we use the 'trad-core' bfd). There are quite a number of | ||
7 | obstacles to being able to view the contents of the floating point | ||
8 | registers, and until these are solved you will not be able to view the | ||
9 | contents of them. Actually, you can read in the core file and look at | ||
10 | the contents of the user struct to find out what the floating point | ||
11 | registers contain. | ||
12 | The actual file contents are as follows: | ||
13 | UPAGE: 1 page consisting of a user struct that tells gdb what is present | ||
14 | in the file. Directly after this is a copy of the task_struct, which | ||
15 | is currently not used by gdb, but it may come in useful at some point. | ||
16 | All of the registers are stored as part of the upage. The upage should | ||
17 | always be only one page. | ||
18 | DATA: The data area is stored. We use current->end_text to | ||
19 | current->brk to pick up all of the user variables, plus any memory | ||
20 | that may have been malloced. No attempt is made to determine if a page | ||
21 | is demand-zero or if a page is totally unused, we just cover the entire | ||
22 | range. All of the addresses are rounded in such a way that an integral | ||
23 | number of pages is written. | ||
24 | STACK: We need the stack information in order to get a meaningful | ||
25 | backtrace. We need to write the data from (esp) to | ||
26 | current->start_stack, so we round each of these off in order to be able | ||
27 | to write an integer number of pages. | ||
28 | The minimum core file size is 3 pages, or 12288 bytes. | ||
29 | */ | ||
30 | |||
31 | struct user_m68kfp_struct { | ||
32 | unsigned long fpregs[8*3]; /* fp0-fp7 registers */ | ||
33 | unsigned long fpcntl[3]; /* fp control regs */ | ||
34 | }; | ||
35 | |||
36 | /* This is the old layout of "struct pt_regs" as of Linux 1.x, and | ||
37 | is still the layout used by user (the new pt_regs doesn't have | ||
38 | all registers). */ | ||
39 | struct user_regs_struct { | ||
40 | long d1,d2,d3,d4,d5,d6,d7; | ||
41 | long a0,a1,a2,a3,a4,a5,a6; | ||
42 | long d0; | ||
43 | long usp; | ||
44 | long orig_d0; | ||
45 | short stkadj; | ||
46 | short sr; | ||
47 | long pc; | ||
48 | short fmtvec; | ||
49 | short __fill; | ||
50 | }; | ||
51 | |||
52 | |||
53 | /* When the kernel dumps core, it starts by dumping the user struct - | ||
54 | this will be used by gdb to figure out where the data and stack segments | ||
55 | are within the file, and what virtual addresses to use. */ | ||
56 | struct user{ | ||
57 | /* We start with the registers, to mimic the way that "memory" is returned | ||
58 | from the ptrace(3,...) function. */ | ||
59 | struct user_regs_struct regs; /* Where the registers are actually stored */ | ||
60 | /* ptrace does not yet supply these. Someday.... */ | ||
61 | int u_fpvalid; /* True if math co-processor being used. */ | ||
62 | /* for this mess. Not yet used. */ | ||
63 | struct user_m68kfp_struct m68kfp; /* Math Co-processor registers. */ | ||
64 | /* The rest of this junk is to help gdb figure out what goes where */ | ||
65 | unsigned long int u_tsize; /* Text segment size (pages). */ | ||
66 | unsigned long int u_dsize; /* Data segment size (pages). */ | ||
67 | unsigned long int u_ssize; /* Stack segment size (pages). */ | ||
68 | unsigned long start_code; /* Starting virtual address of text. */ | ||
69 | unsigned long start_stack; /* Starting virtual address of stack area. | ||
70 | This is actually the bottom of the stack, | ||
71 | the top of the stack is always found in the | ||
72 | esp register. */ | ||
73 | long int signal; /* Signal that caused the core dump. */ | ||
74 | int reserved; /* No longer used */ | ||
75 | unsigned long u_ar0; /* Used by gdb to help find the values for */ | ||
76 | /* the registers. */ | ||
77 | struct user_m68kfp_struct* u_fpstate; /* Math Co-processor pointer. */ | ||
78 | unsigned long magic; /* To uniquely identify a core file */ | ||
79 | char u_comm[32]; /* User command that was responsible */ | ||
80 | }; | ||
81 | #define NBPG 4096 | ||
82 | #define UPAGES 1 | ||
83 | #define HOST_TEXT_START_ADDR (u.start_code) | ||
84 | #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) | ||
85 | |||
86 | #endif | ||