aboutsummaryrefslogtreecommitdiff
path: root/include/asm-s390/user.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-s390/user.h')
-rw-r--r--include/asm-s390/user.h76
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 1b050e35fdc..00000000000
--- a/include/asm-s390/user.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * include/asm-s390/user.h
- *
- * S390 version
- *
- * Derived from "include/asm-i386/usr.h"
- */
-
-#ifndef _S390_USER_H
-#define _S390_USER_H
-
-#include <asm/page.h>
-#include <asm/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.
-*/
-
-
-/*
- * This is the old layout of "struct pt_regs", and
- * is still the layout used by user mode (the new
- * pt_regs doesn't have all registers as the kernel
- * doesn't use the extra segment registers)
- */
-
-/* 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 user_regs_struct regs; /* Where the registers are actually stored */
-/* 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. */
- 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)
-
-#endif /* _S390_USER_H */