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