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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/s390/kernel/compat_ptrace.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/s390/kernel/compat_ptrace.h')
-rw-r--r--arch/s390/kernel/compat_ptrace.h83
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 */