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syscall.h
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syscall.h
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/* syscall.h - proxy system call handler interfaces */
/* SimpleScalar(TM) Tool Suite
* Copyright (C) 1994-2003 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
* All Rights Reserved.
*
* THIS IS A LEGAL DOCUMENT, BY USING SIMPLESCALAR,
* YOU ARE AGREEING TO THESE TERMS AND CONDITIONS.
*
* No portion of this work may be used by any commercial entity, or for any
* commercial purpose, without the prior, written permission of SimpleScalar,
* LLC ([email protected]). Nonprofit and noncommercial use is permitted
* as described below.
*
* 1. SimpleScalar is provided AS IS, with no warranty of any kind, express
* or implied. The user of the program accepts full responsibility for the
* application of the program and the use of any results.
*
* 2. Nonprofit and noncommercial use is encouraged. SimpleScalar may be
* downloaded, compiled, executed, copied, and modified solely for nonprofit,
* educational, noncommercial research, and noncommercial scholarship
* purposes provided that this notice in its entirety accompanies all copies.
* Copies of the modified software can be delivered to persons who use it
* solely for nonprofit, educational, noncommercial research, and
* noncommercial scholarship purposes provided that this notice in its
* entirety accompanies all copies.
*
* 3. ALL COMMERCIAL USE, AND ALL USE BY FOR PROFIT ENTITIES, IS EXPRESSLY
* PROHIBITED WITHOUT A LICENSE FROM SIMPLESCALAR, LLC ([email protected]).
*
* 4. No nonprofit user may place any restrictions on the use of this software,
* including as modified by the user, by any other authorized user.
*
* 5. Noncommercial and nonprofit users may distribute copies of SimpleScalar
* in compiled or executable form as set forth in Section 2, provided that
* either: (A) it is accompanied by the corresponding machine-readable source
* code, or (B) it is accompanied by a written offer, with no time limit, to
* give anyone a machine-readable copy of the corresponding source code in
* return for reimbursement of the cost of distribution. This written offer
* must permit verbatim duplication by anyone, or (C) it is distributed by
* someone who received only the executable form, and is accompanied by a
* copy of the written offer of source code.
*
* 6. SimpleScalar was developed by Todd M. Austin, Ph.D. The tool suite is
* currently maintained by SimpleScalar LLC ([email protected]). US Mail:
* 2395 Timbercrest Court, Ann Arbor, MI 48105.
*
* Copyright (C) 1994-2003 by Todd M. Austin, Ph.D. and SimpleScalar, LLC.
*/
#ifndef SYSCALL_H
#define SYSCALL_H
#include <sys/types.h>
#ifdef _MSC_VER
#include <time.h>
#else
#include <sys/time.h>
#endif
#include "host.h"
#include "misc.h"
#include "machine.h"
/*
* This module implements the system call portion of the SimpleScalar
* instruction set architecture. The system call definitions are borrowed
* from Ultrix. All system calls are executed by the simulator (the host) on
* behalf of the simulated program (the target). The basic procedure for
* implementing a system call is as follows:
*
* 1) decode the system call (this is the enum in "syscode")
* 2) copy system call inputs in target (simulated program) memory
* to host memory (simulator memory), note: the location and
* amount of memory to copy is system call specific
* 3) the simulator performs the system call on behalf of the target prog
* 4) copy system call results in host memory to target memory
* 5) set result register to indicate the error status of the system call
*
* That's it... If you encounter an unimplemented system call and would like
* to add support for it, first locate the syscode and arguments for the system
* call when it occurs (do this in the debugger) and then implement a proxy
* procedure in syscall.c.
*
*/
/* syscall proxy handler, architect registers and memory are assumed to be
precise when this function is called, register and memory are updated with
the results of the sustem call */
void
sys_syscall(struct regs_t *regs, /* registers to access */
mem_access_fn mem_fn, /* generic memory accessor */
struct mem_t *mem, /* memory space to access */
md_inst_t inst, /* system call inst */
int traceable); /* traceable system call? */
#endif /* SYSCALL_H */