diff options
Diffstat (limited to 'include/linux/user.h')
-rw-r--r-- | include/linux/user.h | 78 |
1 files changed, 1 insertions, 77 deletions
diff --git a/include/linux/user.h b/include/linux/user.h index 3fbee19e4..68daf840f 100644 --- a/include/linux/user.h +++ b/include/linux/user.h @@ -1,77 +1 @@ -#ifndef _LINUX_USER_H -#define _LINUX_USER_H - -#include <linux/ptrace.h> -/* 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_i387_struct { - long cwd; - long swd; - long twd; - long fip; - long fcs; - long foo; - long fos; - long st_space[20]; /* 8*10 bytes for each FP-reg = 80 bytes */ -}; - -/* 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. */ -struct user{ -/* We start with the registers, to mimic the way that "memory" is returned - from the ptrace(3,...) function. */ - struct pt_regs regs; /* Where the registers are actually stored */ -/* ptrace does not yet supply these. Someday.... */ - int u_fpvalid; /* True if math co-processor being used. */ - /* for this mess. Not yet used. */ - struct user_i387_struct i387; /* Math Co-processor registers. */ -/* 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 */ - struct pt_regs * u_ar0; /* Used by gdb to help find the values for */ - /* the registers. */ - struct user_i387_struct* u_fpstate; /* Math Co-processor pointer. */ - unsigned long magic; /* To uniquely identify a core file */ - char u_comm[32]; /* User command that was responsible */ - int u_debugreg[8]; -}; -#define NBPG 4096 -#define UPAGES 1 -#define HOST_TEXT_START_ADDR (u.start_code) -#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) - -#endif +#include <asm/user.h> |