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gem5/src/arch/riscv/linux/linux.hh

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arch: [Patch 1/5] Added RISC-V base instruction set RV64I First of five patches adding RISC-V to GEM5. This patch introduces the base 64-bit ISA (RV64I) in src/arch/riscv for use with syscall emulation. The multiply, floating point, and atomic memory instructions will be added in additional patches, as well as support for more detailed CPU models. The loader is also modified to be able to parse RISC-V ELF files, and a "Hello world\!" example for RISC-V is added to test-progs. Patch 2 will implement the multiply extension, RV64M; patch 3 will implement the floating point (single- and double-precision) extensions, RV64FD; patch 4 will implement the atomic memory instructions, RV64A, and patch 5 will add support for timing, minor, and detailed CPU models that is missing from the first four patches (such as handling locked memory). [Removed several unused parameters and imports from RiscvInterrupts.py, RiscvISA.py, and RiscvSystem.py.] [Fixed copyright information in RISC-V files copied from elsewhere that had ARM licenses attached.] [Reorganized instruction definitions in decoder.isa so that they are sorted by opcode in preparation for the addition of ISA extensions M, A, F, D.] [Fixed formatting of several files, removed some variables and instructions that were missed when moving them to other patches, fixed RISC-V Foundation copyright attribution, and fixed history of files copied from other architectures using hg copy.] [Fixed indentation of switch cases in isa.cc.] [Reorganized syscall descriptions in linux/process.cc to remove large number of repeated unimplemented system calls and added implmementations to functions that have received them since it process.cc was first created.] [Fixed spacing for some copyright attributions.] [Replaced the rest of the file copies using hg copy.] [Fixed style check errors and corrected unaligned memory accesses.] [Fix some minor formatting mistakes.] Signed-off by: Alec Roelke Signed-off by: Jason Lowe-Power <jason@lowepower.com>
2016-11-30 23:10:28 +01:00
/*
* Copyright (c) 2006 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Korey Sewell
*/
#ifndef __ARCH_RISCV_LINUX_LINUX_HH__
#define __ARCH_RISCV_LINUX_LINUX_HH__
#include "kern/linux/linux.hh"
class RiscvLinux : public Linux
{
public:
static const int TGT_SIGHUP = 0x000001;
static const int TGT_SIGINT = 0x000002;
static const int TGT_SIGQUIT = 0x000003;
static const int TGT_SIGILL = 0x000004;
static const int TGT_SIGTRAP = 0x000005;
static const int TGT_SIGIOT = 0x000006;
static const int TGT_SIGABRT = 0x000006;
static const int TGT_SIGEMT = 0x000007;
static const int TGT_SIGFPE = 0x000008;
static const int TGT_SIGKILL = 0x000009;
static const int TGT_SIGBUS = 0x00000a;
static const int TGT_SIGSEGV = 0x00000b;
static const int TGT_SIGSYS = 0x00000c;
static const int TGT_SIGPIPE = 0x00000d;
static const int TGT_SIGALRM = 0x00000e;
static const int TGT_SIGTERM = 0x00000f;
static const int TGT_SIGUSR1 = 0x000010;
static const int TGT_SIGUSR2 = 0x000011;
static const int TGT_SIGCHLD = 0x000012;
static const int TGT_SIGCLD = 0x000012;
static const int TGT_SIGPWR = 0x000013;
static const int TGT_SIGWINCH = 0x000014;
static const int TGT_SIGURG = 0x000015;
static const int TGT_SIGIO = 0x000016;
static const int TGT_SIGPOLL = 0x000016;
static const int TGT_SIGSTOP = 0x000017;
static const int TGT_SIGTSTP = 0x000018;
static const int TGT_SIGCONT = 0x000019;
static const int TGT_SIGTTIN = 0x00001a;
static const int TGT_SIGTTOU = 0x00001b;
static const int TGT_SIGVTALRM = 0x00001c;
static const int TGT_SIGPROF = 0x00001d;
static const int TGT_SIGXCPU = 0x00001e;
static const int TGT_SIGXFSZ = 0x00001f;
/// This table maps the target open() flags to the corresponding
/// host open() flags.
static SyscallFlagTransTable openFlagTable[];
/// Number of entries in openFlagTable[].
static const int NUM_OPEN_FLAGS;
//@{
/// open(2) flag values.
static const int TGT_O_RDONLY = 0x00000000; //!< O_RDONLY
static const int TGT_O_WRONLY = 0x00000001; //!< O_WRONLY
static const int TGT_O_RDWR = 0x00000002; //!< O_RDWR
static const int TGT_O_CREAT = 0x00000100; //!< O_CREAT
static const int TGT_O_EXCL = 0x00000400; //!< O_EXCL
static const int TGT_O_NOCTTY = 0x00000800; //!< O_NOCTTY
static const int TGT_O_TRUNC = 0x00000200; //!< O_TRUNC
static const int TGT_O_APPEND = 0x00000008; //!< O_APPEND
static const int TGT_O_NONBLOCK = 0x00000080; //!< O_NONBLOCK
static const int TGT_O_DSYNC = 0x00000010; //!< O_DSYNC
static const int TGT_FASYNC = 0x00001000; //!< O_FASYNC
static const int TGT_O_DIRECT = 0x00008000; //!< O_DIRECT
static const int TGT_O_LARGEFILE = 0x00002000; //!< O_LARGEFILE
static const int TGT_O_DIRECTORY = 0x00010000; //!< O_DIRECTORY
static const int TGT_O_NOFOLLOW = 0x00020000; //!< O_NOFOLLOW
static const int TGT_O_NOATIME = 0x00040000; //!< O_NOATIME
static const int TGT_O_CLOEXEC = 0x00080000; //!< O_CLOEXEC
static const int TGT_O_SYNC = 0x00004010; //!< O_SYNC
static const int TGT_O_PATH = 0x00200000; //!< O_PATH
//@}
static const unsigned TGT_MAP_SHARED = 0x00001;
static const unsigned TGT_MAP_PRIVATE = 0x00002;
static const unsigned TGT_MAP_ANON = 0x00800;
static const unsigned TGT_MAP_DENYWRITE = 0x02000;
static const unsigned TGT_MAP_EXECUTABLE = 0x04000;
static const unsigned TGT_MAP_FILE = 0x00000;
static const unsigned TGT_MAP_GROWSDOWN = 0x01000;
static const unsigned TGT_MAP_HUGETLB = 0x80000;
static const unsigned TGT_MAP_LOCKED = 0x08000;
static const unsigned TGT_MAP_NONBLOCK = 0x20000;
static const unsigned TGT_MAP_NORESERVE = 0x00400;
static const unsigned TGT_MAP_POPULATE = 0x10000;
static const unsigned TGT_MAP_STACK = 0x40000;
static const unsigned TGT_MAP_ANONYMOUS = 0x00800;
static const unsigned TGT_MAP_FIXED = 0x00010;
static const unsigned NUM_MMAP_FLAGS;
//@{
/// For getsysinfo().
static const unsigned GSI_PLATFORM_NAME = 103; //!< platform name as string
static const unsigned GSI_CPU_INFO = 59; //!< CPU information
static const unsigned GSI_PROC_TYPE = 60; //!< get proc_type
static const unsigned GSI_MAX_CPU = 30; //!< max # cpus
static const unsigned GSI_CPUS_IN_BOX = 55; //!< # of CPUs in system
static const unsigned GSI_PHYSMEM = 19; //!< Physical memory in KB
static const unsigned GSI_CLK_TCK = 42; //!< clock freq in Hz
//@}
//@{
/// For setsysinfo().
static const unsigned SSI_IEEE_FP_CONTROL = 14; //!< ieee_set_fp_control()
//@}
//@{
/// ioctl() command codes.
static const unsigned TGT_TCGETA = 0x5401;
static const unsigned TGT_TCSETAW = 0x5403;
static const unsigned TGT_TCGETS = 0x540d;
static const unsigned TGT_FIONREAD = 0x467f;
static const unsigned TGT_TIOCGETP = 0x7408;
static const unsigned TGT_TIOCSETP = 0x7409;
static const unsigned TGT_TIOCSETN = 0x740a;
//@}
static bool
isTtyReq(unsigned req)
{
switch (req) {
case TGT_TIOCGETP:
case TGT_TIOCSETP:
case TGT_TIOCSETN:
case TGT_FIONREAD:
case TGT_TCGETS:
case TGT_TCGETA:
case TGT_TCSETAW:
return true;
default:
return false;
}
}
/// For table().
static const int TBL_SYSINFO = 12;
/// Resource constants for getrlimit() (overide some generics).
static const unsigned TGT_RLIMIT_NPROC = 8;
static const unsigned TGT_RLIMIT_AS = 6;
static const unsigned TGT_RLIMIT_RSS = 7;
static const unsigned TGT_RLIMIT_NOFILE = 5;
static const unsigned TGT_RLIMIT_MEMLOCK = 9;
/// Offset used to make sure that processes don't
/// assign themselves to process IDs reserved for
/// the root users.
static const int NUM_ROOT_PROCS = 2;
typedef struct {
int32_t uptime; /* Seconds since boot */
uint32_t loads[3]; /* 1, 5, and 15 minute load averages */
uint32_t totalram; /* Total usable main memory size */
uint32_t freeram; /* Available memory size */
uint32_t sharedram; /* Amount of shared memory */
uint32_t bufferram; /* Memory used by buffers */
uint32_t totalswap; /* Total swap space size */
uint32_t freeswap; /* swap space still available */
uint16_t procs; /* Number of current processes */
uint32_t totalhigh; /* Total high memory size */
uint32_t freehigh; /* Available high memory size */
uint32_t mem_unit; /* Memory unit size in bytes */
} tgt_sysinfo;
};
#endif
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