[S390] ptrace cleanup

Overhaul program event recording and the code dealing with the ptrace
user space interface.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 16 insertions, 37 deletions

diff --git a/arch/s390/kernel/compat_ptrace.h b/arch/s390/kernel/compat_ptrace.h
index 3141025724f4..12b823833510 100644
--- a/arch/s390/kernel/compat_ptrace.h
+++ b/arch/s390/kernel/compat_ptrace.h
@@ -4,40 +4,19 @@
 #include <asm/ptrace.h>    /* needed for NUM_CR_WORDS */
 #include "compat_linux.h"  /* needed for psw_compat_t */
 
-typedef struct {
-        __u32 cr[NUM_CR_WORDS];
-} 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 compat_per_struct_kernel {
+        __u32 cr9;              /* PER control bits */
+        __u32 cr10;             /* PER starting address */
+        __u32 cr11;             /* PER ending address */
+        __u32 bits;             /* Obsolete software bits */
+        __u32 starting_addr;    /* User specified start address */
+        __u32 ending_addr;      /* User specified end address */
+        __u16 perc_atmid;       /* PER trap ATMID */
+        __u32 address;          /* PER trap instruction address */
+        __u8  access_id;        /* PER trap access identification */
+};
 
-struct user_regs_struct32
+struct compat_user_regs_struct
 {
         psw_compat_t psw;
         u32 gprs[NUM_GPRS];
@@ -50,14 +29,14 @@ struct user_regs_struct32
          * itself as there is no "official" ptrace interface for hardware
          * watchpoints. This is the way intel does it.
          */
-        per_struct32 per_info;
+        struct compat_per_struct_kernel per_info;
         u32  ieee_instruction_pointer;  /* obsolete, always 0 */
 };
 
-struct user32 {
+struct compat_user {
         /* 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 */
+        struct compat_user_regs_struct regs;
         /* 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). */
@@ -79,6 +58,6 @@ typedef struct
         __u32   len;
         __u32   kernel_addr;
         __u32   process_addr;
-} ptrace_area_emu31;
+} compat_ptrace_area;
 
 #endif /* _PTRACE32_H */