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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/s390/kernel/compat_ptrace.h
Initial import
Diffstat (limited to 'arch/s390/kernel/compat_ptrace.h')
-rw-r--r--arch/s390/kernel/compat_ptrace.h63
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/s390/kernel/compat_ptrace.h b/arch/s390/kernel/compat_ptrace.h
new file mode 100644
index 000000000..12b823833
--- /dev/null
+++ b/arch/s390/kernel/compat_ptrace.h
@@ -0,0 +1,63 @@
+#ifndef _PTRACE32_H
+#define _PTRACE32_H
+
+#include <asm/ptrace.h> /* needed for NUM_CR_WORDS */
+#include "compat_linux.h" /* needed for psw_compat_t */
+
+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 compat_user_regs_struct
+{
+ psw_compat_t psw;
+ u32 gprs[NUM_GPRS];
+ u32 acrs[NUM_ACRS];
+ u32 orig_gpr2;
+ /* nb: there's a 4-byte hole here */
+ 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.
+ */
+ struct compat_per_struct_kernel per_info;
+ u32 ieee_instruction_pointer; /* obsolete, always 0 */
+};
+
+struct compat_user {
+ /* We start with the registers, to mimic the way that "memory"
+ is returned from the ptrace(3,...) function. */
+ 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). */
+ 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;
+} compat_ptrace_area;
+
+#endif /* _PTRACE32_H */