1 files changed, 83 insertions, 0 deletions
diff --git a/arch/s390/kernel/compat_ptrace.h b/arch/s390/kernel/compat_ptrace.h
new file mode 100644
index 00000000000..419aef913ee
--- /dev/null
+++ b/arch/s390/kernel/compat_ptrace.h
@@ -0,0 +1,83 @@
+#ifndef _PTRACE32_H
+#define _PTRACE32_H
+
+#include "compat_linux.h"  /* needed for _psw_t32 */
+
+typedef struct {
+	__u32 cr[3];
+} per_cr_words32;
+
+typedef struct {
+	__u16          perc_atmid;          /* 0x096 */
+	__u32          address;             /* 0x098 */
+	__u8           access_id;           /* 0x0a1 */
+} per_lowcore_words32;
+
+typedef struct {
+	union {
+		per_cr_words32   words;
+	} control_regs;
+	/*
+	 * Use these flags instead of setting em_instruction_fetch
+	 * directly they are used so that single stepping can be
+	 * switched on & off while not affecting other tracing
+	 */
+	unsigned  single_step       : 1;
+	unsigned  instruction_fetch : 1;
+	unsigned                    : 30;
+	/*
+	 * These addresses are copied into cr10 & cr11 if single
+	 * stepping is switched off
+	 */
+	__u32     starting_addr;
+	__u32     ending_addr;
+	union {
+		per_lowcore_words32 words;
+	} lowcore; 
+} per_struct32;
+
+struct user_regs_struct32
+{
+	_psw_t32 psw;
+	u32 gprs[NUM_GPRS];
+	u32 acrs[NUM_ACRS];
+	u32 orig_gpr2;
+	s390_fp_regs fp_regs;
+	/*
+	 * These per registers are in here so that gdb can modify them
+	 * itself as there is no "official" ptrace interface for hardware
+	 * watchpoints. This is the way intel does it.
+	 */
+	per_struct32 per_info;
+	u32  ieee_instruction_pointer; 
+	/* Used to give failing instruction back to user for ieee exceptions */
+};
+
+struct user32 {
+	/* We start with the registers, to mimic the way that "memory"
+	   is returned from the ptrace(3,...) function.  */
+	struct user_regs_struct32 regs; /* Where the registers are actually stored */
+	/* 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.  */
+	s32 signal;     	 /* Signal that caused the core dump. */
+	u32 u_ar0;               /* Used by gdb to help find the values for */
+	                         /* the registers. */
+	u32 magic;		 /* To uniquely identify a core file */
+	char u_comm[32];	 /* User command that was responsible */
+};
+
+typedef struct
+{
+	__u32   len;
+	__u32   kernel_addr;
+	__u32   process_addr;
+} ptrace_area_emu31;
+
+#endif /* _PTRACE32_H */