1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_USER32_H
3 #define _ASM_X86_USER32_H
4 
5 /* IA32 compatible user structures for ptrace.
6  * These should be used for 32bit coredumps too. */
7 
8 struct user_i387_ia32_struct {
9 	u32	cwd;
10 	u32	swd;
11 	u32	twd;
12 	u32	fip;
13 	u32	fcs;
14 	u32	foo;
15 	u32	fos;
16 	u32	st_space[20];   /* 8*10 bytes for each FP-reg = 80 bytes */
17 };
18 
19 /* FSAVE frame with extensions */
20 struct user32_fxsr_struct {
21 	unsigned short	cwd;
22 	unsigned short	swd;
23 	unsigned short	twd;	/* not compatible to 64bit twd */
24 	unsigned short	fop;
25 	int	fip;
26 	int	fcs;
27 	int	foo;
28 	int	fos;
29 	int	mxcsr;
30 	int	reserved;
31 	int	st_space[32];	/* 8*16 bytes for each FP-reg = 128 bytes */
32 	int	xmm_space[32];	/* 8*16 bytes for each XMM-reg = 128 bytes */
33 	int	padding[56];
34 };
35 
36 struct user_regs_struct32 {
37 	__u32 ebx, ecx, edx, esi, edi, ebp, eax;
38 	unsigned short ds, __ds, es, __es;
39 	unsigned short fs, __fs, gs, __gs;
40 	__u32 orig_eax, eip;
41 	unsigned short cs, __cs;
42 	__u32 eflags, esp;
43 	unsigned short ss, __ss;
44 };
45 
46 struct user32 {
47   struct user_regs_struct32 regs; /* Where the registers are actually stored */
48   int u_fpvalid;		/* True if math co-processor being used. */
49 				/* for this mess. Not yet used. */
50   struct user_i387_ia32_struct i387;	/* Math Co-processor registers. */
51 /* The rest of this junk is to help gdb figure out what goes where */
52   __u32 u_tsize;	/* Text segment size (pages). */
53   __u32 u_dsize;	/* Data segment size (pages). */
54   __u32 u_ssize;	/* Stack segment size (pages). */
55   __u32 start_code;     /* Starting virtual address of text. */
56   __u32 start_stack;	/* Starting virtual address of stack area.
57 				   This is actually the bottom of the stack,
58 				   the top of the stack is always found in the
59 				   esp register.  */
60   __u32 signal;     		/* Signal that caused the core dump. */
61   int reserved;			/* No __u32er used */
62   __u32 u_ar0;	/* Used by gdb to help find the values for */
63 				/* the registers. */
64   __u32 u_fpstate;	/* Math Co-processor pointer. */
65   __u32 magic;		/* To uniquely identify a core file */
66   char u_comm[32];		/* User command that was responsible */
67   int u_debugreg[8];
68 };
69 
70 
71 #endif /* _ASM_X86_USER32_H */
72