Release 4.14 arch/x86/include/asm/user32.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_USER32_H

#define _ASM_X86_USER32_H

/* IA32 compatible user structures for ptrace.
 * These should be used for 32bit coredumps too. */


struct user_i387_ia32_struct {
	
u32	cwd;
	
u32	swd;
	
u32	twd;
	
u32	fip;
	
u32	fcs;
	
u32	foo;
	
u32	fos;
	
u32	st_space[20];   /* 8*10 bytes for each FP-reg = 80 bytes */
};

/* FSAVE frame with extensions */

struct user32_fxsr_struct {
	
unsigned short	cwd;
	
unsigned short	swd;
	
unsigned short	twd;	/* not compatible to 64bit twd */
	
unsigned short	fop;
	
int	fip;
	
int	fcs;
	
int	foo;
	
int	fos;
	
int	mxcsr;
	
int	reserved;
	
int	st_space[32];	/* 8*16 bytes for each FP-reg = 128 bytes */
	
int	xmm_space[32];	/* 8*16 bytes for each XMM-reg = 128 bytes */
	
int	padding[56];
};


struct user_regs_struct32 {
	






__u32 ebx, ecx, edx, esi, edi, ebp, eax;
	



unsigned short ds, __ds, es, __es;
	



unsigned short fs, __fs, gs, __gs;
	

__u32 orig_eax, eip;
	

unsigned short cs, __cs;
	

__u32 eflags, esp;
	

unsigned short ss, __ss;
};


struct user32 {
  
struct user_regs_struct32 regs; /* Where the registers are actually stored */
  
int u_fpvalid;		/* True if math co-processor being used. */
				/* for this mess. Not yet used. */
  
struct user_i387_ia32_struct i387;	/* Math Co-processor registers. */
/* The rest of this junk is to help gdb figure out what goes where */
  
__u32 u_tsize;	/* Text segment size (pages). */
  
__u32 u_dsize;	/* Data segment size (pages). */
  
__u32 u_ssize;	/* Stack segment size (pages). */
  
__u32 start_code;     /* Starting virtual address of text. */
  
__u32 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.  */
  
__u32 signal;     		/* Signal that caused the core dump. */
  
int reserved;			/* No __u32er used */
  
__u32 u_ar0;	/* Used by gdb to help find the values for */
				/* the registers. */
  
__u32 u_fpstate;	/* Math Co-processor pointer. */
  
__u32 magic;		/* To uniquely identify a core file */
  
char u_comm[32];		/* User command that was responsible */
  
int u_debugreg[8];
};


#endif /* _ASM_X86_USER32_H */
Overall Contributors
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Andi Kleen
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H. Peter Anvin
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Joe Perches
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Greg Kroah-Hartman
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Directory: arch/x86/include/asm

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