linux/arch/sh/include/asm/user.h
Al Viro 0c9dceb9bb asm/user.h: killed unused macros
Some of them used to be used by libbfd for a.out coredump handling.
Seeing that
	* libbfd has their copies anyway
	* we don't export them into userland headers
	* we don't support a.out coredumps anymore
let's bury the definitions.  They never had in-kernel
users anyway...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2022-01-30 21:17:00 -05:00

56 lines
2.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_USER_H
#define __ASM_SH_USER_H
#include <asm/ptrace.h>
#include <asm/page.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). The 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 handy at some point. All of the registers
* are stored as part of the upage. The upage should always be
* only one page long.
* data: The data segment follows next. We use current->end_text to
* current->brk to pick up all of the user variables, plus any memory
* that may have been sbrk'ed. 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 usp to
* current->start_stack, so we round each of these in order to be able
* to write an integer number of pages.
*/
struct user_fpu_struct {
unsigned long fp_regs[16];
unsigned long xfp_regs[16];
unsigned long fpscr;
unsigned long fpul;
};
struct user {
struct pt_regs regs; /* entire machine state */
struct user_fpu_struct fpu; /* Math Co-processor registers */
int u_fpvalid; /* True if math co-processor being used */
size_t u_tsize; /* text size (pages) */
size_t u_dsize; /* data size (pages) */
size_t u_ssize; /* stack size (pages) */
unsigned long start_code; /* text starting address */
unsigned long start_data; /* data starting address */
unsigned long start_stack; /* stack starting address */
long int signal; /* signal causing core dump */
unsigned long u_ar0; /* help gdb find registers */
struct user_fpu_struct* u_fpstate; /* Math Co-processor pointer */
unsigned long magic; /* identifies a core file */
char u_comm[32]; /* user command name */
};
#endif /* __ASM_SH_USER_H */