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Diffstat (limited to 'kernel/arch/tile/include/asm/ptrace.h')
| -rw-r--r-- | kernel/arch/tile/include/asm/ptrace.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/kernel/arch/tile/include/asm/ptrace.h b/kernel/arch/tile/include/asm/ptrace.h new file mode 100644 index 000000000..b9620c077 --- /dev/null +++ b/kernel/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 */ |