aboutsummaryrefslogtreecommitdiff
path: root/arch/sh/include/asm/ptrace.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/include/asm/ptrace.h')
-rw-r--r--arch/sh/include/asm/ptrace.h139
1 files changed, 139 insertions, 0 deletions
diff --git a/arch/sh/include/asm/ptrace.h b/arch/sh/include/asm/ptrace.h
new file mode 100644
index 00000000000..b86aeabba61
--- /dev/null
+++ b/arch/sh/include/asm/ptrace.h
@@ -0,0 +1,139 @@
+#ifndef __ASM_SH_PTRACE_H
+#define __ASM_SH_PTRACE_H
+
+/*
+ * Copyright (C) 1999, 2000 Niibe Yutaka
+ *
+ */
+#if defined(__SH5__)
+struct pt_regs {
+ unsigned long long pc;
+ unsigned long long sr;
+ unsigned long long syscall_nr;
+ unsigned long long regs[63];
+ unsigned long long tregs[8];
+ unsigned long long pad[2];
+};
+#else
+/*
+ * GCC defines register number like this:
+ * -----------------------------
+ * 0 - 15 are integer registers
+ * 17 - 22 are control/special registers
+ * 24 - 39 fp registers
+ * 40 - 47 xd registers
+ * 48 - fpscr register
+ * -----------------------------
+ *
+ * We follows above, except:
+ * 16 --- program counter (PC)
+ * 22 --- syscall #
+ * 23 --- floating point communication register
+ */
+#define REG_REG0 0
+#define REG_REG15 15
+
+#define REG_PC 16
+
+#define REG_PR 17
+#define REG_SR 18
+#define REG_GBR 19
+#define REG_MACH 20
+#define REG_MACL 21
+
+#define REG_SYSCALL 22
+
+#define REG_FPREG0 23
+#define REG_FPREG15 38
+#define REG_XFREG0 39
+#define REG_XFREG15 54
+
+#define REG_FPSCR 55
+#define REG_FPUL 56
+
+/*
+ * This struct defines the way the registers are stored on the
+ * kernel stack during a system call or other kernel entry.
+ */
+struct pt_regs {
+ unsigned long regs[16];
+ unsigned long pc;
+ unsigned long pr;
+ unsigned long sr;
+ unsigned long gbr;
+ unsigned long mach;
+ unsigned long macl;
+ long tra;
+};
+
+/*
+ * This struct defines the way the DSP registers are stored on the
+ * kernel stack during a system call or other kernel entry.
+ */
+struct pt_dspregs {
+ unsigned long a1;
+ unsigned long a0g;
+ unsigned long a1g;
+ unsigned long m0;
+ unsigned long m1;
+ unsigned long a0;
+ unsigned long x0;
+ unsigned long x1;
+ unsigned long y0;
+ unsigned long y1;
+ unsigned long dsr;
+ unsigned long rs;
+ unsigned long re;
+ unsigned long mod;
+};
+
+#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
+
+#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
+#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
+
+#define PTRACE_GETDSPREGS 55
+#define PTRACE_SETDSPREGS 56
+#endif
+
+#ifdef __KERNEL__
+#include <asm/addrspace.h>
+
+#define user_mode(regs) (((regs)->sr & 0x40000000)==0)
+#define instruction_pointer(regs) ((unsigned long)(regs)->pc)
+
+extern void show_regs(struct pt_regs *);
+
+/*
+ * These are defined as per linux/ptrace.h.
+ */
+struct task_struct;
+
+#define arch_has_single_step() (1)
+extern void user_enable_single_step(struct task_struct *);
+extern void user_disable_single_step(struct task_struct *);
+
+#ifdef CONFIG_SH_DSP
+#define task_pt_regs(task) \
+ ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
+ - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
+#else
+#define task_pt_regs(task) \
+ ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
+ - sizeof(unsigned long)) - 1)
+#endif
+
+static inline unsigned long profile_pc(struct pt_regs *regs)
+{
+ unsigned long pc = instruction_pointer(regs);
+
+#ifdef P2SEG
+ if (pc >= P2SEG && pc < P3SEG)
+ pc -= 0x20000000;
+#endif
+
+ return pc;
+}
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_SH_PTRACE_H */