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Blackfin: convert user/elf to asm-generic
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Mike Frysinger
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Jun 19, 2009
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#ifndef _BFIN_USER_H | ||
#define _BFIN_USER_H | ||
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/* Changes by Tony Kou Lineo, Inc. July, 2001 | ||
* | ||
* Based include/asm-m68knommu/user.h | ||
* | ||
*/ | ||
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/* Core file format: The core file is written in such a way that gdb | ||
can understand it and provide useful information to the user (under | ||
linux we use the 'trad-core' bfd). There are quite a number of | ||
obstacles to being able to view the contents of the floating point | ||
registers, and until these are solved you will not be able to view the | ||
contents of them. Actually, you can read in the core file and look at | ||
the contents of the user struct to find out what the floating point | ||
registers contain. | ||
The actual file contents are as follows: | ||
UPAGE: 1 page consisting of a user struct that tells gdb what is present | ||
in the file. Directly after this is a copy of the task_struct, which | ||
is currently not used by gdb, but it may come in useful at some point. | ||
All of the registers are stored as part of the upage. The upage should | ||
always be only one page. | ||
DATA: The data area is stored. We use current->end_text to | ||
current->brk to pick up all of the user variables, plus any memory | ||
that may have been malloced. No attempt is made to determine if a page | ||
is demand-zero or if a page is totally unused, we just cover the entire | ||
range. All of the addresses are rounded in such a way that an integral | ||
number of pages is written. | ||
STACK: We need the stack information in order to get a meaningful | ||
backtrace. We need to write the data from (esp) to | ||
current->start_stack, so we round each of these off in order to be able | ||
to write an integer number of pages. | ||
The minimum core file size is 3 pages, or 12288 bytes. | ||
*/ | ||
struct user_bfinfp_struct { | ||
}; | ||
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/* This is the old layout of "struct pt_regs" as of Linux 1.x, and | ||
is still the layout used by user (the new pt_regs doesn't have | ||
all registers). */ | ||
struct user_regs_struct { | ||
long r0, r1, r2, r3, r4, r5, r6, r7; | ||
long p0, p1, p2, p3, p4, p5, usp, fp; | ||
long i0, i1, i2, i3; | ||
long l0, l1, l2, l3; | ||
long b0, b1, b2, b3; | ||
long m0, m1, m2, m3; | ||
long a0w, a1w; | ||
long a0x, a1x; | ||
unsigned long rets; | ||
unsigned long astat; | ||
unsigned long pc; | ||
unsigned long orig_p0; | ||
}; | ||
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/* When the kernel dumps core, it starts by dumping the user struct - | ||
this will be used by gdb to figure out where the data and stack segments | ||
are within the file, and what virtual addresses to use. */ | ||
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struct user { | ||
/* We start with the registers, to mimic the way that "memory" is returned | ||
from the ptrace(3,...) function. */ | ||
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struct user_regs_struct regs; /* Where the registers are actually stored */ | ||
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/* The rest of this junk is to help gdb figure out what goes where */ | ||
unsigned long int u_tsize; /* Text segment size (pages). */ | ||
unsigned long int u_dsize; /* Data segment size (pages). */ | ||
unsigned long int u_ssize; /* Stack segment size (pages). */ | ||
unsigned long start_code; /* Starting virtual address of text. */ | ||
unsigned long start_stack; /* Starting virtual address of stack area. | ||
This is actually the bottom of the stack, | ||
the top of the stack is always found in the | ||
esp register. */ | ||
long int signal; /* Signal that caused the core dump. */ | ||
int reserved; /* No longer used */ | ||
unsigned long u_ar0; | ||
/* Used by gdb to help find the values for */ | ||
/* the registers. */ | ||
unsigned long magic; /* To uniquely identify a core file */ | ||
char u_comm[32]; /* User command that was responsible */ | ||
}; | ||
#define NBPG PAGE_SIZE | ||
#define UPAGES 1 | ||
#define HOST_TEXT_START_ADDR (u.start_code) | ||
#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) | ||
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#endif | ||
#include <asm-generic/user.h> |