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-rw-r--r--arch/tile/include/asm/ptrace.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/arch/tile/include/asm/ptrace.h b/arch/tile/include/asm/ptrace.h
new file mode 100644
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+++ b/arch/tile/include/asm/ptrace.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+#ifndef _ASM_TILE_PTRACE_H
+#define _ASM_TILE_PTRACE_H
+
+#include <linux/compiler.h>
+
+#ifndef __ASSEMBLY__
+/* Benefit from consistent use of "long" on all chips. */
+typedef unsigned long pt_reg_t;
+#endif
+
+#include <uapi/asm/ptrace.h>
+
+#define PTRACE_O_MASK_TILE (PTRACE_O_TRACEMIGRATE)
+#define PT_TRACE_MIGRATE PT_EVENT_FLAG(PTRACE_EVENT_MIGRATE)
+
+/* Flag bits in pt_regs.flags */
+#define PT_FLAGS_DISABLE_IRQ 1 /* on return to kernel, disable irqs */
+#define PT_FLAGS_CALLER_SAVES 2 /* caller-save registers are valid */
+#define PT_FLAGS_RESTORE_REGS 4 /* restore callee-save regs on return */
+
+#ifndef __ASSEMBLY__
+
+#define regs_return_value(regs) ((regs)->regs[0])
+#define instruction_pointer(regs) ((regs)->pc)
+#define profile_pc(regs) instruction_pointer(regs)
+#define user_stack_pointer(regs) ((regs)->sp)
+
+/* Does the process account for user or for system time? */
+#define user_mode(regs) (EX1_PL((regs)->ex1) < KERNEL_PL)
+
+/* Fill in a struct pt_regs with the current kernel registers. */
+struct pt_regs *get_pt_regs(struct pt_regs *);
+
+/* Trace the current syscall. */
+extern int do_syscall_trace_enter(struct pt_regs *regs);
+extern void do_syscall_trace_exit(struct pt_regs *regs);
+
+#define arch_has_single_step() (1)
+
+/*
+ * A structure for all single-stepper state.
+ *
+ * Also update defines in assembler section if it changes
+ */
+struct single_step_state {
+ /* the page to which we will write hacked-up bundles */
+ void __user *buffer;
+
+ union {
+ int flags;
+ struct {
+ unsigned long is_enabled:1, update:1, update_reg:6;
+ };
+ };
+
+ unsigned long orig_pc; /* the original PC */
+ unsigned long next_pc; /* return PC if no branch (PC + 1) */
+ unsigned long branch_next_pc; /* return PC if we did branch/jump */
+ unsigned long update_value; /* value to restore to update_target */
+};
+
+/* Single-step the instruction at regs->pc */
+extern void single_step_once(struct pt_regs *regs);
+
+/* Clean up after execve(). */
+extern void single_step_execve(void);
+
+struct task_struct;
+
+extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs);
+
+#ifdef __tilegx__
+/* We need this since sigval_t has a user pointer in it, for GETSIGINFO etc. */
+#define __ARCH_WANT_COMPAT_SYS_PTRACE
+#endif
+
+#endif /* !__ASSEMBLY__ */
+
+#define SINGLESTEP_STATE_MASK_IS_ENABLED 0x1
+#define SINGLESTEP_STATE_MASK_UPDATE 0x2
+#define SINGLESTEP_STATE_TARGET_LB 2
+#define SINGLESTEP_STATE_TARGET_UB 7
+
+#endif /* _ASM_TILE_PTRACE_H */