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C-SKY: remove user_regs definition

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C-SKY GDB dose not use this file for ptrace and coredump.  ptrace can use
pt_regs definition from linux kernel directly.  The old definition only
got 34 regs instead of 38 regs from linux kernel, which will corrupted
the memory after ptrace PTRACE_GETREGSET call.

	* sysdeps/unix/sysv/linux/csky/sys/procfs.h: Use linux definition
	directly.
	* sysdeps/unix/sysv/linux/csky/sys/user.h: Remove user_regs
	definition.
This commit is contained in:
Mao Han
2019-03-11 09:48:51 +08:00
parent 6229c9bff7
commit 827e30f3a3
3 changed files with 19 additions and 46 deletions
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41
sysdeps/unix/sysv/linux/csky/sys/user.h
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@@ -1,4 +1,5 @@
/* ptrace register data format definitions. C-SKY version.
/* This file is not used by C-SKY GDB. ptrace can use pt_regs definition
from linux kernel directly.
Copyright (C) 2018-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -19,42 +20,4 @@
#ifndef _SYS_USER_H
#define _SYS_USER_H 1
struct user_fpregs {
unsigned long fsr; /* FPU status reg. */
unsigned long fesr; /* FPU exception status reg. */
unsigned long fp[32]; /* FPU general regs. */
};
struct user_regs {
unsigned long int uregs[34]; /* CSKY V2 has 32 general rgister. */
};
/* 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 regs; /* The registers are actually stored. */
int u_fpvalid; /* True if math co-processor being used. */
/* 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 user_regs * 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. */
struct user_fpregs u_fp;
struct user_fpregs* u_fpstate; /* Math Co-processor pointer. */
};
#endif /* _SYS_USER_H */