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