xref: /openbmc/linux/arch/s390/kernel/compat_ptrace.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _PTRACE32_H
3 #define _PTRACE32_H
4 
5 #include <asm/ptrace.h>    /* needed for NUM_CR_WORDS */
6 #include "compat_linux.h"  /* needed for psw_compat_t */
7 
8 struct compat_per_struct_kernel {
9 	__u32 cr9;		/* PER control bits */
10 	__u32 cr10;		/* PER starting address */
11 	__u32 cr11;		/* PER ending address */
12 	__u32 bits;		/* Obsolete software bits */
13 	__u32 starting_addr;	/* User specified start address */
14 	__u32 ending_addr;	/* User specified end address */
15 	__u16 perc_atmid;	/* PER trap ATMID */
16 	__u32 address;		/* PER trap instruction address */
17 	__u8  access_id;	/* PER trap access identification */
18 };
19 
20 struct compat_user_regs_struct
21 {
22 	psw_compat_t psw;
23 	u32 gprs[NUM_GPRS];
24 	u32 acrs[NUM_ACRS];
25 	u32 orig_gpr2;
26 	/* nb: there's a 4-byte hole here */
27 	s390_fp_regs fp_regs;
28 	/*
29 	 * These per registers are in here so that gdb can modify them
30 	 * itself as there is no "official" ptrace interface for hardware
31 	 * watchpoints. This is the way intel does it.
32 	 */
33 	struct compat_per_struct_kernel per_info;
34 	u32  ieee_instruction_pointer;	/* obsolete, always 0 */
35 };
36 
37 struct compat_user {
38 	/* We start with the registers, to mimic the way that "memory"
39 	   is returned from the ptrace(3,...) function.  */
40 	struct compat_user_regs_struct regs;
41 	/* The rest of this junk is to help gdb figure out what goes where */
42 	u32 u_tsize;		/* Text segment size (pages). */
43 	u32 u_dsize;	        /* Data segment size (pages). */
44 	u32 u_ssize;	        /* Stack segment size (pages). */
45 	u32 start_code;         /* Starting virtual address of text. */
46 	u32 start_stack;	/* Starting virtual address of stack area.
47 				   This is actually the bottom of the stack,
48 				   the top of the stack is always found in the
49 				   esp register.  */
50 	s32 signal;     	 /* Signal that caused the core dump. */
51 	u32 u_ar0;               /* Used by gdb to help find the values for */
52 	                         /* the registers. */
53 	u32 magic;		 /* To uniquely identify a core file */
54 	char u_comm[32];	 /* User command that was responsible */
55 };
56 
57 typedef struct
58 {
59 	__u32   len;
60 	__u32   kernel_addr;
61 	__u32   process_addr;
62 } compat_ptrace_area;
63 
64 #endif /* _PTRACE32_H */
65