This file defines objects used to emulate syscalls from the target application on the host machine. More...

#include <sys/mount.h>
#include <fcntl.h>
#include <net/if.h>
#include <poll.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
#include <cerrno>
#include <memory>
#include <string>
#include "arch/generic/tlb.hh"
#include "arch/utility.hh"
#include "base/intmath.hh"
#include "base/loader/object_file.hh"
#include "base/logging.hh"
#include "base/trace.hh"
#include "base/types.hh"
#include "config/the_isa.hh"
#include "cpu/base.hh"
#include "cpu/thread_context.hh"
#include "mem/page_table.hh"
#include "params/Process.hh"
#include "sim/emul_driver.hh"
#include "sim/futex_map.hh"
#include "sim/process.hh"
#include "sim/syscall_debug_macros.hh"
#include "sim/syscall_desc.hh"
#include "sim/syscall_emul_buf.hh"
#include "sim/syscall_return.hh"

Macros
#define	NO_STAT64 0

Typedefs
typedef struct statfs	hst_statfs

typedef struct stat	hst_stat

typedef struct stat64	hst_stat64

Functions
void	warnUnsupportedOS (std::string syscall_name)

SyscallReturn	unimplementedFunc (SyscallDesc desc, int num, ThreadContext tc)
	Handler for unimplemented syscalls that we haven't thought about. More...

SyscallReturn	ignoreFunc (SyscallDesc desc, int num, ThreadContext tc)
	Handler for unimplemented syscalls that we never intend to implement (signal handling, etc.) and should not affect the correct behavior of the program. More...

SyscallReturn	ignoreWarnOnceFunc (SyscallDesc desc, int num, ThreadContext tc)
	Like above, but only prints a warning once per syscall desc it's used with. More...

SyscallReturn	fallocateFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, int mode, off_t offset, off_t len)

SyscallReturn	exitFunc (SyscallDesc desc, int num, ThreadContext tc, int status)
	Target exit() handler: terminate current context. More...

SyscallReturn	exitGroupFunc (SyscallDesc desc, int num, ThreadContext tc, int status)
	Target exit_group() handler: terminate simulation. (exit all threads) More...

SyscallReturn	setTidAddressFunc (SyscallDesc desc, int num, ThreadContext tc, uint64_t tidPtr)
	Target set_tid_address() handler. More...

SyscallReturn	getpagesizeFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getpagesize() handler. More...

SyscallReturn	brkFunc (SyscallDesc desc, int num, ThreadContext tc, Addr new_brk)
	Target brk() handler: set brk address. More...

SyscallReturn	closeFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd)
	Target close() handler. More...

SyscallReturn	lseekFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, uint64_t offs, int whence)
	Target lseek() handler. More...

SyscallReturn	_llseekFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, uint64_t offset_high, uint32_t offset_low, Addr result_ptr, int whence)
	Target _llseek() handler. More...

SyscallReturn	munmapFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target munmap() handler. More...

SyscallReturn	shutdownFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, int how)
	Target shutdown() handler. More...

SyscallReturn	gethostnameFunc (SyscallDesc desc, int num, ThreadContext tc, Addr buf_ptr, int name_len)
	Target gethostname() handler. More...

SyscallReturn	getcwdFunc (SyscallDesc desc, int num, ThreadContext tc, Addr buf_ptr, unsigned long size)
	Target getcwd() handler. More...

SyscallReturn	readlinkFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, Addr buf, size_t bufsiz)
	Target readlink() handler. More...

SyscallReturn	unlinkFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname)
	Target unlink() handler. More...

SyscallReturn	linkFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, Addr new_pathname)
	Target link() handler. More...

SyscallReturn	symlinkFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, Addr new_pathname)
	Target symlink() handler. More...

SyscallReturn	mkdirFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, mode_t mode)
	Target mkdir() handler. More...

SyscallReturn	mknodFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, mode_t mode, dev_t dev)
	Target mknod() handler. More...

SyscallReturn	chdirFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname)
	Target chdir() handler. More...

SyscallReturn	rmdirFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname)

SyscallReturn	renameFunc (SyscallDesc desc, int num, ThreadContext tc, Addr oldpath, Addr newpath)
	Target rename() handler. More...

SyscallReturn	truncateFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, off_t length)
	Target truncate() handler. More...

SyscallReturn	ftruncateFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, off_t length)
	Target ftruncate() handler. More...

SyscallReturn	truncate64Func (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, int64_t length)
	Target truncate64() handler. More...

SyscallReturn	ftruncate64Func (SyscallDesc desc, int num, ThreadContext tc)
	Target ftruncate64() handler. More...

SyscallReturn	umaskFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target umask() handler. More...

SyscallReturn	gettidFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target gettid() handler. More...

SyscallReturn	chownFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, uint32_t owner, uint32_t group)
	Target chown() handler. More...

SyscallReturn	getpgrpFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getpgrpFunc() handler. More...

SyscallReturn	setpgidFunc (SyscallDesc desc, int num, ThreadContext tc, int pid, int pgid)
	Target setpgid() handler. More...

SyscallReturn	fchownFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, uint32_t owner, uint32_t group)
	Target fchown() handler. More...

SyscallReturn	dupFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd)
	Target dup() handler. More...

SyscallReturn	dup2Func (SyscallDesc desc, int num, ThreadContext tc, int old_tgt_fd, int new_tgt_fd)
	Target dup2() handler. More...

SyscallReturn	fcntlFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target fcntl() handler. More...

SyscallReturn	fcntl64Func (SyscallDesc desc, int num, ThreadContext tc)
	Target fcntl64() handler. More...

SyscallReturn	pipeFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target pipe() handler. More...

SyscallReturn	pipeImpl (SyscallDesc desc, int num, ThreadContext tc, bool pseudo_pipe, bool is_pipe2=false)
	Internal pipe() handler. More...

SyscallReturn	pipe2Func (SyscallDesc desc, int num, ThreadContext tc)
	Target pipe() handler. More...

SyscallReturn	getpidFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getpid() handler. More...

SyscallReturn	getpeernameFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr sockAddrPtr, Addr addrlenPtr)

SyscallReturn	bindFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr buf_ptr, int addrlen)

SyscallReturn	listenFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, int backlog)

SyscallReturn	connectFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr buf_ptr, int addrlen)

SyscallReturn	sendtoFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr bufrPtr, size_t bufrLen, int flags, Addr addrPtr, socklen_t addrLen)

SyscallReturn	recvfromFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr bufrPtr, size_t bufrLen, int flags, Addr addrPtr, Addr addrlenPtr)

SyscallReturn	recvmsgFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr msgPtr, int flags)

SyscallReturn	sendmsgFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr msgPtr, int flags)

SyscallReturn	getuidFunc (SyscallDesc desc, int num, ThreadContext tc)

SyscallReturn	getgidFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getgid() handler. More...

SyscallReturn	getppidFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getppid() handler. More...

SyscallReturn	geteuidFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target geteuid() handler. More...

SyscallReturn	getegidFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getegid() handler. More...

SyscallReturn	accessFunc (SyscallDesc desc, int num, ThreadContext tc, Addr pathname, mode_t mode)
	Target access() handler. More...

SyscallReturn	getsockoptFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, int level, int optname, Addr valPtr, Addr lenPtr)

SyscallReturn	setsockoptFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, int level, int optname, Addr valPtr, socklen_t len)

SyscallReturn	getsocknameFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr addrPtr, Addr lenPtr)

template<class OS >
SyscallReturn	futexFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr uaddr, int op, int val, int timeout, Addr uaddr2, int val3)
	Futex system call Implemented by Daniel Sanchez Used by printf's in multi-threaded apps. More...

SyscallReturn	pipePseudoFunc (SyscallDesc desc, int num, ThreadContext tc)
	Pseudo Funcs - These functions use a different return convension, returning a second value in a register other than the normal return register. More...

SyscallReturn	getpidPseudoFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getpidPseudo() handler. More...

SyscallReturn	getuidPseudoFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getuidPseudo() handler. More...

SyscallReturn	getgidPseudoFunc (SyscallDesc desc, int num, ThreadContext tc)
	Target getgidPseudo() handler. More...

template<class T1 , class T2 >
void	getElapsedTimeMicro (T1 &sec, T2 &usec)
	Helper function to convert current elapsed time to seconds and microseconds. More...

template<class T1 , class T2 >
void	getElapsedTimeNano (T1 &sec, T2 &nsec)
	Helper function to convert current elapsed time to seconds and nanoseconds. More...

template<typename target_stat , typename host_stat >
void	convertStatBuf (target_stat &tgt, host_stat *host, ByteOrder bo, bool fakeTTY=false)

template<typename target_stat , typename host_stat64 >
void	convertStat64Buf (target_stat &tgt, host_stat64 *host, ByteOrder bo, bool fakeTTY=false)

template<class OS >
void	copyOutStatBuf (PortProxy &mem, Addr addr, hst_stat *host, bool fakeTTY=false)

template<class OS >
void	copyOutStat64Buf (PortProxy &mem, Addr addr, hst_stat64 *host, bool fakeTTY=false)

template<class OS >
void	copyOutStatfsBuf (PortProxy &mem, Addr addr, hst_statfs *host)

template<class OS >
SyscallReturn	ioctlFunc (SyscallDesc desc, int callnum, ThreadContext tc)
	Target ioctl() handler. More...

template<class OS >
SyscallReturn	openatFunc (SyscallDesc desc, int callnum, ThreadContext tc, int tgt_dirfd, Addr pathname, int tgt_flags, int mode)
	Target open() handler. More...

template<class OS >
SyscallReturn	openFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, int tgt_flags, int mode)
	Target open() handler. More...

template<class OS >
SyscallReturn	unlinkatFunc (SyscallDesc desc, int callnum, ThreadContext tc, int dirfd, Addr pathname)
	Target unlinkat() handler. More...

template<class OS >
SyscallReturn	faccessatFunc (SyscallDesc desc, int callnum, ThreadContext tc, int dirfd, Addr pathname, int mode)
	Target facessat() handler. More...

template<class OS >
SyscallReturn	readlinkatFunc (SyscallDesc desc, int callnum, ThreadContext tc, int dirfd, Addr pathname, Addr buf, size_t bufsiz)
	Target readlinkat() handler. More...

template<class OS >
SyscallReturn	renameatFunc (SyscallDesc desc, int callnum, ThreadContext tc, int olddirfd, Addr oldpath, int newdirfd, Addr newpath)
	Target renameat() handler. More...

template<class OS >
SyscallReturn	sysinfoFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr info)
	Target sysinfo() handler. More...

template<class OS >
SyscallReturn	chmodFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, mode_t mode)
	Target chmod() handler. More...

template<class OS >
SyscallReturn	pollFunc (SyscallDesc desc, int num, ThreadContext tc, Addr fdsPtr, int nfds, int tmout)

template<class OS >
SyscallReturn	fchmodFunc (SyscallDesc desc, int callnum, ThreadContext tc, int tgt_fd, uint32_t mode)
	Target fchmod() handler. More...

template<class OS >
SyscallReturn	mremapFunc (SyscallDesc desc, int callnum, ThreadContext tc)
	Target mremap() handler. More...

template<class OS >
SyscallReturn	statFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, Addr bufPtr)
	Target stat() handler. More...

template<class OS >
SyscallReturn	stat64Func (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, Addr bufPtr)
	Target stat64() handler. More...

template<class OS >
SyscallReturn	fstatat64Func (SyscallDesc desc, int callnum, ThreadContext tc, int dirfd, Addr pathname, Addr bufPtr)
	Target fstatat64() handler. More...

template<class OS >
SyscallReturn	fstat64Func (SyscallDesc desc, int callnum, ThreadContext tc, int tgt_fd, Addr bufPtr)
	Target fstat64() handler. More...

template<class OS >
SyscallReturn	lstatFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, Addr bufPtr)
	Target lstat() handler. More...

template<class OS >
SyscallReturn	lstat64Func (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, Addr bufPtr)
	Target lstat64() handler. More...

template<class OS >
SyscallReturn	fstatFunc (SyscallDesc desc, int callnum, ThreadContext tc, int tgt_fd, Addr bufPtr)
	Target fstat() handler. More...

template<class OS >
SyscallReturn	statfsFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, Addr bufPtr)
	Target statfs() handler. More...

template<class OS >
SyscallReturn	cloneFunc (SyscallDesc desc, int callnum, ThreadContext tc)

template<class OS >
SyscallReturn	fstatfsFunc (SyscallDesc desc, int callnum, ThreadContext tc, int tgt_fd, Addr bufPtr)
	Target fstatfs() handler. More...

template<class OS >
SyscallReturn	readvFunc (SyscallDesc desc, int callnum, ThreadContext tc, int tgt_fd, uint64_t tiov_base, size_t count)
	Target readv() handler. More...

template<class OS >
SyscallReturn	writevFunc (SyscallDesc desc, int callnum, ThreadContext tc, int tgt_fd, uint64_t tiov_base, size_t count)
	Target writev() handler. More...

template<class OS >
SyscallReturn	mmapFunc (SyscallDesc desc, int num, ThreadContext tc, Addr start, uint64_t length, int prot, int tgt_flags, int tgt_fd, int offset)
	Target mmap() handler. More...

template<class OS >
SyscallReturn	pwrite64Func (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr bufPtr, int nbytes, int offset)

template<class OS >
SyscallReturn	mmap2Func (SyscallDesc desc, int num, ThreadContext tc, Addr start, uint64_t length, int prot, int tgt_flags, int tgt_fd, int offset)
	Target mmap2() handler. More...

template<class OS >
SyscallReturn	getrlimitFunc (SyscallDesc desc, int callnum, ThreadContext tc, unsigned resource, Addr rlim)
	Target getrlimit() handler. More...

template<class OS >
SyscallReturn	prlimitFunc (SyscallDesc desc, int callnum, ThreadContext tc, int pid, int resource, Addr n, Addr o)

template<class OS >
SyscallReturn	clock_gettimeFunc (SyscallDesc desc, int num, ThreadContext tc, int clk_id, Addr tp_ptr)
	Target clock_gettime() function. More...

template<class OS >
SyscallReturn	clock_getresFunc (SyscallDesc desc, int num, ThreadContext tc, int clk_id, Addr tp_ptr)
	Target clock_getres() function. More...

template<class OS >
SyscallReturn	gettimeofdayFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr tv_ptr, Addr tz_ptr)
	Target gettimeofday() handler. More...

template<class OS >
SyscallReturn	utimesFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, Addr times)
	Target utimes() handler. More...

template<class OS >
SyscallReturn	execveFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr pathname, Addr argv_mem_loc, Addr envp_mem_loc)

template<class OS >
SyscallReturn	getrusageFunc (SyscallDesc desc, int callnum, ThreadContext tc, int who, Addr usage)
	Target getrusage() function. More...

template<class OS >
SyscallReturn	timesFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr bufPtr)
	Target times() function. More...

template<class OS >
SyscallReturn	timeFunc (SyscallDesc desc, int callnum, ThreadContext tc, Addr taddr)
	Target time() function. More...

template<class OS >
SyscallReturn	tgkillFunc (SyscallDesc desc, int num, ThreadContext tc, int tgid, int tid, int sig)

template<class OS >
SyscallReturn	socketFunc (SyscallDesc desc, int num, ThreadContext tc, int domain, int type, int prot)

template<class OS >
SyscallReturn	socketpairFunc (SyscallDesc desc, int num, ThreadContext tc, int domain, int type, int prot, Addr svPtr)

template<class OS >
SyscallReturn	selectFunc (SyscallDesc desc, int callnum, ThreadContext tc, int nfds_t, Addr fds_read_ptr, Addr fds_writ_ptr, Addr fds_excp_ptr, Addr time_val_ptr)

template<class OS >
SyscallReturn	readFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr buf_ptr, int nbytes)

template<class OS >
SyscallReturn	writeFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr buf_ptr, int nbytes)

template<class OS >
SyscallReturn	wait4Func (SyscallDesc desc, int num, ThreadContext tc, pid_t pid, Addr statPtr, int options, Addr rusagePtr)

template<class OS >
SyscallReturn	acceptFunc (SyscallDesc desc, int num, ThreadContext tc, int tgt_fd, Addr addrPtr, Addr lenPtr)

template<class OS >
SyscallReturn	eventfdFunc (SyscallDesc desc, int num, ThreadContext tc, unsigned initval, int in_flags)
	Target eventfd() function. More...

Variables
const int	one_million = 1000000
	A readable name for 1,000,000, for converting microseconds to seconds. More...

const int	one_billion = 1000000000
	A readable name for 1,000,000,000, for converting nanoseconds to seconds. More...

const unsigned	seconds_since_epoch = 1000000000
	Approximate seconds since the epoch (1/1/1970). More...

Detailed Description

This file defines objects used to emulate syscalls from the target application on the host machine.

Definition in file syscall_emul.hh.

Macro Definition Documentation

◆ NO_STAT64

#define NO_STAT64 0

Definition at line 53 of file syscall_emul.hh.

Typedef Documentation

◆ hst_stat

typedef struct stat hst_stat

Definition at line 565 of file syscall_emul.hh.

◆ hst_stat64

typedef struct stat64 hst_stat64

Definition at line 566 of file syscall_emul.hh.

◆ hst_statfs

typedef struct statfs hst_statfs

Definition at line 560 of file syscall_emul.hh.

Function Documentation

◆ _llseekFunc()

SyscallReturn _llseekFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		uint64_t	offset_high,
		uint32_t	offset_low,
		Addr	result_ptr,
		int	whence
	)

Target _llseek() handler.

Definition at line 335 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), System::getGuestByteOrder(), ThreadContext::getProcessPtr(), ThreadContext::getSystemPtr(), ThreadContext::getVirtProxy(), htog(), ArmISA::offset, and MipsISA::p.

Referenced by SparcISA::getresuidFunc(), and unameFunc().

◆ acceptFunc()

template<class OS >

SyscallReturn acceptFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	addrPtr,
		Addr	lenPtr
	)

We poll the socket file descriptor first to guarantee that we do not block on our accept call. The socket can be opened without the non-blocking flag (it blocks). This will cause deadlocks between communicating processes.

Definition at line 2633 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, SyscallReturn::retry(), and ArmISA::sa.

◆ accessFunc()

SyscallReturn accessFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		mode_t	mode
	)

Target access() handler.

Definition at line 1088 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::mode, MipsISA::p, and PortProxy::tryReadString().

Referenced by faccessatFunc(), and unameFunc32().

◆ bindFunc()

SyscallReturn bindFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	buf_ptr,
		int	addrlen
	)

Definition at line 1253 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and ArmISA::status.

◆ brkFunc()

SyscallReturn brkFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	new_brk
	)

Target brk() handler: set brk address.

Definition at line 253 of file syscall_emul.cc.

References ChunkGenerator::done(), DPRINTF_SYSCALL, ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), PortProxy::memsetBlob(), MipsISA::p, AlphaISA::PageBytes, roundDown(), and roundUp().

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ chdirFunc()

SyscallReturn chdirFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname
	)

Target chdir() handler.

Definition at line 1119 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, startswith(), and PortProxy::tryReadString().

◆ chmodFunc()

template<class OS >

SyscallReturn chmodFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		mode_t	mode
	)

Target chmod() handler.

Definition at line 1019 of file syscall_emul.hh.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::mode, and PortProxy::tryReadString().

◆ chownFunc()

SyscallReturn chownFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		uint32_t	owner,
		uint32_t	group
	)

Target chown() handler.

Definition at line 651 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and PortProxy::tryReadString().

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ clock_getresFunc()

template<class OS >

SyscallReturn clock_getresFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	clk_id,
		Addr	tp_ptr
	)

Target clock_getres() function.

Definition at line 1984 of file syscall_emul.hh.

References BaseBufferArg::copyOut(), and ThreadContext::getVirtProxy().

◆ clock_gettimeFunc()

template<class OS >

SyscallReturn clock_gettimeFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	clk_id,
		Addr	tp_ptr
	)

Target clock_gettime() function.

Definition at line 1966 of file syscall_emul.hh.

References ArmISA::byteOrder(), BaseBufferArg::copyOut(), getElapsedTimeNano(), ThreadContext::getVirtProxy(), htog(), and seconds_since_epoch.

◆ cloneFunc()

template<class OS >

SyscallReturn cloneFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc
	)

Note that ProcessParams is generated by swig and there are no other examples of how to create anything but this default constructor. The fields are manually initialized instead of passing parameters to the constructor.

Definition at line 1455 of file syscall_emul.hh.

References ThreadContext::activate(), Process::assignThreadContext(), BufferArg::bufferPtr(), Process::childClearTID, ThreadContext::clearArchRegs(), ThreadContext::contextId(), BaseBufferArg::copyOut(), ThreadContext::cpuId(), DPRINTF_SYSCALL, fatal, System::findFreeContext(), ThreadContext::getProcessPtr(), ThreadContext::getSystemPtr(), ThreadContext::getVirtProxy(), MipsISA::index, Process::initState(), System::maxPID, MipsISA::p, panic, ThreadContext::pcState(), Process::pid(), Process::pTable, ThreadContext::readIntReg(), Process::revokeThreadContext(), ThreadContext::setIntReg(), ThreadContext::setProcessPtr(), Process::setSyscallReturn(), EmulationPageTable::shared, Process::sigchld, AlphaISA::SyscallPseudoReturnReg, AlphaISA::SyscallSuccessReg, ThreadContext::threadId(), and Process::useForClone.

◆ closeFunc()

SyscallReturn closeFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd
	)

Target close() handler.

Definition at line 311 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and MipsISA::p.

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ connectFunc()

SyscallReturn connectFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	buf_ptr,
		int	addrlen
	)

Definition at line 1290 of file syscall_emul.cc.

References addr, BufferArg::bufferPtr(), BaseBufferArg::copyIn(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and ArmISA::status.

◆ convertStat64Buf()

template<typename target_stat , typename host_stat64 >

void convertStat64Buf	(	target_stat &	tgt,
		host_stat64 *	host,
		ByteOrder	bo,
		bool	fakeTTY = `false`
	)

Definition at line 623 of file syscall_emul.hh.

References PowerISA::bo, and htog().

◆ convertStatBuf()

template<typename target_stat , typename host_stat >

void convertStatBuf	(	target_stat &	tgt,
		host_stat *	host,
		ByteOrder	bo,
		bool	fakeTTY = `false`
	)

Definition at line 575 of file syscall_emul.hh.

References htog().

◆ copyOutStat64Buf()

template<class OS >

void copyOutStat64Buf	(	PortProxy &	mem,
		Addr	addr,
		hst_stat64 *	host,
		bool	fakeTTY = `false`
	)

Definition at line 655 of file syscall_emul.hh.

References ArmISA::byteOrder().

◆ copyOutStatBuf()

template<class OS >

void copyOutStatBuf	(	PortProxy &	mem,
		Addr	addr,
		hst_stat *	host,
		bool	fakeTTY = `false`
	)

Definition at line 644 of file syscall_emul.hh.

References ArmISA::byteOrder().

◆ copyOutStatfsBuf()

template<class OS >

void copyOutStatfsBuf	(	PortProxy &	mem,
		Addr	addr,
		hst_statfs *	host
	)

Definition at line 667 of file syscall_emul.hh.

References PowerISA::bo, ArmISA::byteOrder(), BaseBufferArg::copyOut(), and htog().

◆ dup2Func()

SyscallReturn dup2Func	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	old_tgt_fd,
		int	new_tgt_fd
	)

Target dup2() handler.

We need a valid host file descriptor number to be able to pass into the second parameter for dup2 (newfd), but we don't know what the viable numbers are; we execute the open call to retrieve one.

Definition at line 717 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and MipsISA::p.

Referenced by unameFunc32().

◆ dupFunc()

SyscallReturn dupFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd
	)

Target dup() handler.

Really, it's difficult to maintain fields like file offset or flags since an update to such a field won't be reflected in the metadata for the fd entries that we maintain for checkpoint restoration.

Definition at line 697 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and MipsISA::p.

Referenced by osf_setsysinfoFunc(), unameFunc(), and unameFunc32().

◆ eventfdFunc()

template<class OS >

SyscallReturn eventfdFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		unsigned	initval,
		int	in_flags
	)

Target eventfd() function.

Definition at line 2700 of file syscall_emul.hh.

References ThreadContext::getProcessPtr(), MipsISA::p, and warnUnsupportedOS().

◆ execveFunc()

template<class OS >

SyscallReturn execveFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	argv_mem_loc,
		Addr	envp_mem_loc
	)

Note that ProcessParams is generated by swig and there are no other examples of how to create anything but this default constructor. The fields are manually initialized instead of passing parameters to the constructor.

Prevent process object creation with identical PIDs (which will trip a fatal check in Process constructor). The execve call is supposed to take over the currently executing process' identity but replace whatever it is doing with a new process image. Instead of hijacking the process object in the simulator, we create a new process object and bind to the previous process' thread below (hijacking the thread).

Work through the file descriptor array and close any files marked close-on-exec.

Definition at line 2051 of file syscall_emul.hh.

References ThreadContext::activate(), Process::assignThreadContext(), ArmISA::b, BufferArg::bufferPtr(), ThreadContext::clearArchRegs(), ThreadContext::contextId(), BaseBufferArg::copyIn(), Process::fds, ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::i, sc_dt::inc(), Process::initState(), MipsISA::p, ThreadContext::pcState(), ThreadContext::setNPC(), ThreadContext::setProcessPtr(), Process::sigchld, and PortProxy::tryReadString().

◆ exitFunc()

SyscallReturn exitFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	status
	)

Target exit() handler: terminate current context.

Definition at line 234 of file syscall_emul.cc.

References exitImpl().

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ exitGroupFunc()

SyscallReturn exitGroupFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	status
	)

Target exit_group() handler: terminate simulation. (exit all threads)

Definition at line 240 of file syscall_emul.cc.

References exitImpl().

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), tgkillFunc(), unameFunc(), and unameFunc32().

◆ faccessatFunc()

template<class OS >

SyscallReturn faccessatFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	dirfd,
		Addr	pathname,
		int	mode
	)

Target facessat() handler.

Definition at line 964 of file syscall_emul.hh.

References accessFunc(), and warn.

◆ fallocateFunc()

SyscallReturn fallocateFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		int	mode,
		off_t	offset,
		off_t	len
	)

Definition at line 1066 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), MipsISA::p, and warnUnsupportedOS().

Referenced by unameFunc32().

◆ fchmodFunc()

template<class OS >

SyscallReturn fchmodFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	tgt_fd,
		uint32_t	mode
	)

Target fchmod() handler.

Definition at line 1120 of file syscall_emul.hh.

References ThreadContext::getProcessPtr(), ArmISA::mode, and MipsISA::p.

◆ fchownFunc()

SyscallReturn fchownFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		uint32_t	owner,
		uint32_t	group
	)

Target fchown() handler.

Definition at line 672 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and MipsISA::p.

Referenced by osf_setsysinfoFunc(), setThreadAreaFunc(), and unameFunc32().

◆ fcntl64Func()

SyscallReturn fcntl64Func	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target fcntl64() handler.

Definition at line 791 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), MipsISA::index, MipsISA::p, and warn.

Referenced by setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ fcntlFunc()

SyscallReturn fcntlFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target fcntl() handler.

Definition at line 746 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), MipsISA::index, MipsISA::p, and warn.

Referenced by osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ fstat64Func()

template<class OS >

SyscallReturn fstat64Func	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	bufPtr
	)

Target fstat64() handler.

Definition at line 1313 of file syscall_emul.hh.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and MipsISA::p.

◆ fstatat64Func()

template<class OS >

SyscallReturn fstatat64Func	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	dirfd,
		Addr	pathname,
		Addr	bufPtr
	)

Target fstatat64() handler.

Definition at line 1279 of file syscall_emul.hh.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), PortProxy::tryReadString(), and warn.

◆ fstatfsFunc()

template<class OS >

SyscallReturn fstatfsFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	bufPtr
	)

Target fstatfs() handler.

Definition at line 1597 of file syscall_emul.hh.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and MipsISA::p.

◆ fstatFunc()

template<class OS >

SyscallReturn fstatFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	bufPtr
	)

Target fstat() handler.

Definition at line 1400 of file syscall_emul.hh.

References DPRINTF_SYSCALL, ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and MipsISA::p.

◆ ftruncate64Func()

SyscallReturn ftruncate64Func	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target ftruncate64() handler.

Definition at line 619 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), MipsISA::index, length, and MipsISA::p.

Referenced by unameFunc(), and unameFunc32().

◆ ftruncateFunc()

SyscallReturn ftruncateFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		off_t	length
	)

Target ftruncate() handler.

Definition at line 583 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and MipsISA::p.

Referenced by osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ futexFunc()

template<class OS >

SyscallReturn futexFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	uaddr,
		int	op,
		int	val,
		int	timeout,
		Addr	uaddr2,
		int	val3
	)

Futex system call Implemented by Daniel Sanchez Used by printf's in multi-threaded apps.

Definition at line 375 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), System::futexMap, getgidPseudoFunc(), getpidPseudoFunc(), ThreadContext::getProcessPtr(), ThreadContext::getSystemPtr(), getuidPseudoFunc(), ThreadContext::getVirtProxy(), pipePseudoFunc(), FutexMap::requeue(), FutexMap::suspend(), FutexMap::suspend_bitset(), X86ISA::val, FutexMap::wakeup(), FutexMap::wakeup_bitset(), and warn.

◆ getcwdFunc()

SyscallReturn getcwdFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	buf_ptr,
		unsigned long	size
	)

Target getcwd() handler.

Definition at line 384 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and MipsISA::p.

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), and unameFunc32().

◆ getegidFunc()

SyscallReturn getegidFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getegid() handler.

Definition at line 1059 of file syscall_emul.cc.

References Process::egid(), and ThreadContext::getProcessPtr().

Referenced by SparcISA::getresuidFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ getElapsedTimeMicro()

template<class T1 , class T2 >

void getElapsedTimeMicro	(	T1 &	sec,
		T2 &	usec
	)

Helper function to convert current elapsed time to seconds and microseconds.

Definition at line 535 of file syscall_emul.hh.

References curTick(), one_million, and SimClock::Int::us.

Referenced by getrusageFunc(), gettimeofdayFunc(), and timeFunc().

◆ getElapsedTimeNano()

template<class T1 , class T2 >

void getElapsedTimeNano	(	T1 &	sec,
		T2 &	nsec
	)

Helper function to convert current elapsed time to seconds and nanoseconds.

Definition at line 546 of file syscall_emul.hh.

References curTick(), SimClock::Int::ns, and one_billion.

Referenced by clock_gettimeFunc().

◆ geteuidFunc()

SyscallReturn geteuidFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target geteuid() handler.

Definition at line 1045 of file syscall_emul.cc.

References Process::euid(), and ThreadContext::getProcessPtr().

Referenced by SparcISA::getresuidFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ getgidFunc()

SyscallReturn getgidFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getgid() handler.

Definition at line 1052 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and Process::gid().

Referenced by SparcISA::getresuidFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ getgidPseudoFunc()

SyscallReturn getgidPseudoFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getgidPseudo() handler.

Definition at line 1007 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::setIntReg(), and AlphaISA::SyscallPseudoReturnReg.

Referenced by futexFunc(), and osf_setsysinfoFunc().

◆ gethostnameFunc()

SyscallReturn gethostnameFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	buf_ptr,
		int	name_len
	)

Target gethostname() handler.

Definition at line 374 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), ThreadContext::getVirtProxy(), hostname, and name().

Referenced by osf_setsysinfoFunc(), setThreadAreaFunc(), and unameFunc().

◆ getpagesizeFunc()

SyscallReturn getpagesizeFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getpagesize() handler.

Definition at line 246 of file syscall_emul.cc.

References AlphaISA::PageBytes.

Referenced by osf_setsysinfoFunc(), setThreadAreaFunc(), and unameFunc().

◆ getpeernameFunc()

SyscallReturn getpeernameFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	sockAddrPtr,
		Addr	addrlenPtr
	)

Definition at line 1683 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and MipsISA::p.

◆ getpgrpFunc()

SyscallReturn getpgrpFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getpgrpFunc() handler.

Definition at line 940 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and Process::pgid().

◆ getpidFunc()

SyscallReturn getpidFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getpid() handler.

Definition at line 1017 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and Process::tgid().

Referenced by SparcISA::getresuidFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ getpidPseudoFunc()

SyscallReturn getpidPseudoFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getpidPseudo() handler.

Definition at line 981 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::setIntReg(), and AlphaISA::SyscallPseudoReturnReg.

Referenced by futexFunc(), and osf_setsysinfoFunc().

◆ getppidFunc()

SyscallReturn getppidFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getppid() handler.

Definition at line 1031 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and Process::ppid().

Referenced by SparcISA::getresuidFunc(), and unameFunc32().

◆ getrlimitFunc()

template<class OS >

SyscallReturn getrlimitFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		unsigned	resource,
		Addr	rlim
	)

Target getrlimit() handler.

Definition at line 1889 of file syscall_emul.hh.

References PowerISA::bo, ArmISA::byteOrder(), BaseBufferArg::copyOut(), ThreadContext::getSystemPtr(), ThreadContext::getVirtProxy(), htog(), System::numContexts(), and warn.

◆ getrusageFunc()

template<class OS >

SyscallReturn getrusageFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	who,
		Addr	usage
	)

Target getrusage() function.

Definition at line 2140 of file syscall_emul.hh.

References ArmISA::byteOrder(), BaseBufferArg::copyOut(), getElapsedTimeMicro(), ThreadContext::getVirtProxy(), htog(), and warn.

◆ getsocknameFunc()

SyscallReturn getsocknameFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	addrPtr,
		Addr	lenPtr
	)

Definition at line 1646 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::len, MipsISA::p, ArmISA::sa, and ArmISA::status.

◆ getsockoptFunc()

SyscallReturn getsockoptFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		int	level,
		int	optname,
		Addr	valPtr,
		Addr	lenPtr
	)

Definition at line 1608 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::len, MipsISA::p, ArmISA::status, and X86ISA::val.

◆ gettidFunc()

SyscallReturn gettidFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target gettid() handler.

Definition at line 1024 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and Process::pid().

Referenced by unameFunc32().

◆ gettimeofdayFunc()

template<class OS >

SyscallReturn gettimeofdayFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	tv_ptr,
		Addr	tz_ptr
	)

Target gettimeofday() handler.

Definition at line 2001 of file syscall_emul.hh.

References ArmISA::byteOrder(), BaseBufferArg::copyOut(), getElapsedTimeMicro(), ThreadContext::getVirtProxy(), htog(), and seconds_since_epoch.

◆ getuidFunc()

SyscallReturn getuidFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Definition at line 1038 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and Process::uid().

Referenced by SparcISA::getresuidFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ getuidPseudoFunc()

SyscallReturn getuidPseudoFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target getuidPseudo() handler.

Definition at line 994 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::setIntReg(), and AlphaISA::SyscallPseudoReturnReg.

Referenced by futexFunc(), and osf_setsysinfoFunc().

◆ ignoreFunc()

SyscallReturn ignoreFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Handler for unimplemented syscalls that we never intend to implement (signal handling, etc.) and should not affect the correct behavior of the program.

Prints a warning. Return success to the target program.

Definition at line 77 of file syscall_emul.cc.

References SyscallDesc::name(), and warn.

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ ignoreWarnOnceFunc()

SyscallReturn ignoreWarnOnceFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Like above, but only prints a warning once per syscall desc it's used with.

Definition at line 84 of file syscall_emul.cc.

References SyscallDesc::name(), and warn.

Referenced by unameFunc32().

◆ ioctlFunc()

template<class OS >

SyscallReturn ioctlFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc
	)

Target ioctl() handler.

For the most part, programs call ioctl() only to find out if their stdout is a tty, to determine whether to do line or block buffering. We always claim that output fds are not TTYs to provide repeatable results.

For lack of a better return code, return ENOTTY. Ideally, we should return something better here, but at least we issue the warning.

Definition at line 715 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), DPRINTF_SYSCALL, ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::index, EmulatedDriver::ioctl(), MipsISA::p, ThreadContext::pcState(), ArmISA::status, and warn.

◆ linkFunc()

SyscallReturn linkFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	new_pathname
	)

Target link() handler.

Definition at line 487 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and MipsISA::p.

◆ listenFunc()

SyscallReturn listenFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		int	backlog
	)

Definition at line 1274 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), MipsISA::p, and ArmISA::status.

◆ lseekFunc()

SyscallReturn lseekFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		uint64_t	offs,
		int	whence
	)

Target lseek() handler.

Definition at line 318 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and MipsISA::p.

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ lstat64Func()

template<class OS >

SyscallReturn lstat64Func	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	bufPtr
	)

Target lstat64() handler.

Definition at line 1369 of file syscall_emul.hh.

References Process::checkPathRedirect(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and PortProxy::tryReadString().

◆ lstatFunc()

template<class OS >

SyscallReturn lstatFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	bufPtr
	)

Target lstat() handler.

Definition at line 1343 of file syscall_emul.hh.

References Process::checkPathRedirect(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and PortProxy::tryReadString().

◆ mkdirFunc()

SyscallReturn mkdirFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		mode_t	mode
	)

Target mkdir() handler.

Definition at line 529 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::mode, MipsISA::p, and PortProxy::tryReadString().

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), and unameFunc32().

◆ mknodFunc()

SyscallReturn mknodFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		mode_t	mode,
		dev_t	dev
	)

Target mknod() handler.

Definition at line 1104 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::mode, MipsISA::p, and PortProxy::tryReadString().

◆ mmap2Func()

template<class OS >

SyscallReturn mmap2Func	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	start,
		uint64_t	length,
		int	prot,
		int	tgt_flags,
		int	tgt_fd,
		int	offset
	)

Target mmap2() handler.

Definition at line 1878 of file syscall_emul.hh.

References length, and X86ISA::prot.

◆ mmapFunc()

template<class OS >

SyscallReturn mmapFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	start,
		uint64_t	length,
		int	prot,
		int	tgt_flags,
		int	tgt_fd,
		int	offset
	)

Target mmap() handler.

Definition at line 1692 of file syscall_emul.hh.

References ImageFile::buildImage(), createObjectFile(), debugSymbolTable, DPRINTF_SYSCALL, fatal, BaseTLB::flushAll(), ThreadContext::getDTBPtr(), ThreadContext::getITBPtr(), ThreadContext::getProcessPtr(), HBFDEntry::getSimFD(), ThreadContext::getVirtProxy(), length, ObjectFile::loadAllSymbols(), MemoryImage::minAddr(), EmulatedDriver::mmap(), MipsISA::p, AlphaISA::PageBytes, ThreadContext::pcState(), roundUp(), warn, and PortProxy::writeBlob().

◆ mremapFunc()

template<class OS >

SyscallReturn mremapFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc
	)

Target mremap() handler.

Definition at line 1140 of file syscall_emul.hh.

References ThreadContext::getProcessPtr(), Process::getSyscallArg(), MipsISA::index, AlphaISA::PageBytes, roundUp(), and warn.

◆ munmapFunc()

SyscallReturn munmapFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target munmap() handler.

Definition at line 362 of file syscall_emul.cc.

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ openatFunc()

template<class OS >

SyscallReturn openatFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	tgt_dirfd,
		Addr	pathname,
		int	tgt_flags,
		int	mode
	)

Target open() handler.

Retrieve the simulated process' memory proxy and then read in the path string from that memory space into the host's working memory space.

Translate target flags into host flags. Flags exist which are not ported between architectures which can cause check failures.

If the simulated process called open or openat with AT_FDCWD specified, take the current working directory value which was passed into the process class as a Python parameter and append the current path to create a full path. Otherwise, openat with a valid target directory file descriptor has been called. If the path option, which was passed in as a parameter, is not absolute, retrieve the directory file descriptor's path and prepend it to the path passed in as a parameter. In every case, we should have a full path (which is relevant to the host) to work with after this block has been passed.

Since this is an emulated environment, we create pseudo file descriptors for device requests that have been registered with the process class through Python; this allows us to create a file descriptor for subsequent ioctl or mmap calls.

Fall through here for pass through to host devices, such as /dev/zero

We make several attempts resolve a call to open.

1) Resolve any path redirection before hand. This will set the path up with variable 'redir_path' which may contain a modified path or the original path value. This should already be done in prior code. 2) Try to handle the access using 'special_paths'. Some special_paths and files cannot be called on the host and need to be handled as special cases inside the simulator. These special_paths are handled by C++ routines to provide output back to userspace. 3) If the full path that was created above does not match any of the special cases, pass it through to the open call on the HOST to let the host open the file on our behalf. Again, the openImpl tries to USE_THE_HOST_FILESYSTEM_OPEN (with a possible redirection to the faux-filesystem files). The faux-filesystem is dynamically created during simulator configuration using Python functions. 4) If the host cannot open the file, the open attempt failed in "3)". Return the host's error code back through the system call to the simulated process. If running a debug trace, also notify the user that the open call failed.

Any success will set sim_fd to something other than -1 and skip the next conditions effectively bypassing them.

The file was opened successfully and needs to be recorded in the process' file descriptor array so that it can be retrieved later. The target file descriptor that is chosen will be the lowest unused file descriptor. Return the indirect target file descriptor back to the simulated process to act as a handle for the opened file.

Definition at line 795 of file syscall_emul.hh.

References DPRINTF_SYSCALL, FileFDEntry::getFileName(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::i, ArmISA::mode, SyscallDesc::name(), EmulatedDriver::open(), MipsISA::p, startswith(), PortProxy::tryReadString(), and warn.

◆ openFunc()

template<class OS >

SyscallReturn openFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		int	tgt_flags,
		int	mode
	)

Target open() handler.

Definition at line 942 of file syscall_emul.hh.

References ArmISA::mode.

◆ pipe2Func()

SyscallReturn pipe2Func	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target pipe() handler.

Definition at line 932 of file syscall_emul.cc.

References pipeImpl().

◆ pipeFunc()

SyscallReturn pipeFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target pipe() handler.

Definition at line 926 of file syscall_emul.cc.

References pipeImpl().

Referenced by unameFunc32().

◆ pipeImpl()

SyscallReturn pipeImpl	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		bool	pseudo_pipe,
		bool	is_pipe2 = `false`
	)

Internal pipe() handler.

Now patch the read object to record the target file descriptor chosen as the write end of the pipe.

Alpha Linux convention for pipe() is that fd[0] is returned as the return value of the function, and fd[1] is returned in r20.

Copy the target file descriptors into buffer space and then copy the buffer space back into the target address space.

Definition at line 823 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::index, MipsISA::p, ThreadContext::setIntReg(), and AlphaISA::SyscallPseudoReturnReg.

Referenced by pipe2Func(), pipeFunc(), and pipePseudoFunc().

◆ pipePseudoFunc()

SyscallReturn pipePseudoFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Pseudo Funcs - These functions use a different return convension, returning a second value in a register other than the normal return register.

Definition at line 920 of file syscall_emul.cc.

References pipeImpl().

Referenced by futexFunc(), SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), and unameFunc().

◆ pollFunc()

template<class OS >

SyscallReturn pollFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	fdsPtr,
		int	nfds,
		int	tmout
	)

Record the target file descriptors in a local variable. We need to replace them with host file descriptors but we need a temporary copy for later. Afterwards, replace each target file descriptor in the poll_fd array with its host_fd.

We cannot allow an infinite poll to occur or it will inevitably cause a deadlock in the gem5 simulator with clone. We must pass in tmout with a non-negative value, however it also makes no sense to poll on the underlying host for any other time than tmout a zero timeout.

If blocking indefinitely, check the signal list to see if a signal would break the poll out of the retry cycle and try to return the signal interrupt instead.

Replace each host_fd in the returned poll_fd array with its original target file descriptor.

Copy out the pollfd struct because the host may have updated fields in the structure.

Definition at line 1046 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), ArmISA::fd, ThreadContext::getProcessPtr(), ThreadContext::getSystemPtr(), ThreadContext::getVirtProxy(), MipsISA::index, MipsISA::p, SyscallReturn::retry(), System::signalList, and ArmISA::status.

◆ prlimitFunc()

template<class OS >

SyscallReturn prlimitFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	pid,
		int	resource,
		Addr	n,
		Addr	o
	)

Definition at line 1928 of file syscall_emul.hh.

References PowerISA::bo, ArmISA::byteOrder(), BaseBufferArg::copyOut(), ThreadContext::getVirtProxy(), htog(), and warn.

◆ pwrite64Func()

template<class OS >

SyscallReturn pwrite64Func	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	bufPtr,
		int	nbytes,
		int	offset
	)

Definition at line 1857 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::offset, and MipsISA::p.

◆ readFunc()

template<class OS >

SyscallReturn readFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	buf_ptr,
		int	nbytes
	)

Definition at line 2508 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and SyscallReturn::retry().

◆ readlinkatFunc()

template<class OS >

SyscallReturn readlinkatFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	dirfd,
		Addr	pathname,
		Addr	buf,
		size_t	bufsiz
	)

Target readlinkat() handler.

Definition at line 975 of file syscall_emul.hh.

References readlinkFunc(), and warn.

◆ readlinkFunc()

SyscallReturn readlinkFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	buf,
		size_t	bufsiz
	)

Target readlink() handler.

Definition at line 414 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), fatal, ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, PortProxy::tryReadString(), and warn_once.

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), readlinkatFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ readvFunc()

template<class OS >

SyscallReturn readvFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	tgt_fd,
		uint64_t	tiov_base,
		size_t	count
	)

Target readv() handler.

Definition at line 1621 of file syscall_emul.hh.

References ArmISA::byteOrder(), X86ISA::count, ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), gtoh(), htog(), ArmISA::i, MipsISA::p, PortProxy::readBlob(), and PortProxy::writeBlob().

◆ recvfromFunc()

SyscallReturn recvfromFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	bufrPtr,
		size_t	bufrLen,
		int	flags,
		Addr	addrPtr,
		Addr	addrlenPtr
	)

Definition at line 1311 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and ArmISA::sa.

◆ recvmsgFunc()

SyscallReturn recvmsgFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	msgPtr,
		int	flags
	)

struct msghdr { void *msg_name; // optional address socklen_t msg_namelen; // size of address struct iovec *msg_iov; // iovec array size_t msg_iovlen; // number entries in msg_iov i // entries correspond to buffer void *msg_control; // ancillary data size_t msg_controllen; // ancillary data buffer len int msg_flags; // flags on received message };

struct iovec { void *iov_base; // starting address size_t iov_len; // number of bytes to transfer };

The plan with this system call is to replace all of the pointers in the structure and the substructure with BufferArg class pointers. We will copy every field from the structures into our BufferArg classes.

We will use these address place holders to retain the pointers which we are going to replace with our own buffers in our simulator address space.

Record msg_name pointer then replace with buffer pointer.

Record msg_iov pointer then replace with buffer pointer. Also, setup an array of buffer pointers for the iovec structs record and replace their pointers with buffer pointers.

Record msg_control pointer then replace with buffer pointer.

Definition at line 1403 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::i, and MipsISA::p.

◆ renameatFunc()

template<class OS >

SyscallReturn renameatFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	olddirfd,
		Addr	oldpath,
		int	newdirfd,
		Addr	newpath
	)

Target renameat() handler.

Definition at line 986 of file syscall_emul.hh.

References renameFunc(), and warn.

◆ renameFunc()

SyscallReturn renameFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	oldpath,
		Addr	newpath
	)

Target rename() handler.

Definition at line 544 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and PortProxy::tryReadString().

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), renameatFunc(), unameFunc(), and unameFunc32().

◆ rmdirFunc()

SyscallReturn rmdirFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname
	)

Definition at line 1146 of file syscall_emul.cc.

References PowerISA::bo, BufferArg::bufferPtr(), BaseBufferArg::copyOut(), X86ISA::count, System::getGuestByteOrder(), ThreadContext::getProcessPtr(), ThreadContext::getSystemPtr(), ThreadContext::getVirtProxy(), htog(), MipsISA::p, ArmISA::status, and PortProxy::tryReadString().

◆ selectFunc()

template<class OS >

SyscallReturn selectFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	nfds_t,
		Addr	fds_read_ptr,
		Addr	fds_writ_ptr,
		Addr	fds_excp_ptr,
		Addr	time_val_ptr
	)

Host fields. Notice that these use the definitions from the system headers instead of the gem5 headers and libraries. If the host and target have different header file definitions, this will not work.

Copy in the fd_set from the target.

We need to translate the target file descriptor set into a host file descriptor set. This involves both our internal process fd array and the fd_set defined in Linux header files. The nfds field also needs to be updated as it will be only target specific after retrieving it from the target; the nfds value is expected to be the highest file descriptor that needs to be checked, so we need to extend it out for nfds_h when we do the update.

By this point, we know that we are looking at a valid file descriptor set on the target. We need to check if the target file descriptor value passed in as iter is part of the set.

We know that the target file descriptor belongs to the set, but we do not yet know if the file descriptor is valid or that we have a host mapping. Check that now.

Add the sim_fd to tgt_fd translation into trans_map for use later when we need to zero the target fd_set structures and then update them with hits returned from the host select call.

We know that the host file descriptor exists so now we check if we need to update the max count for nfds_h before passing the duplicated structure into the host.

Add the host file descriptor to the set that we are going to pass into the host.

It might be possible to decrement the timeval based on some derivation of wall clock determined from elapsed simulator ticks but that seems like overkill. Rather, we just set the timeval with zero timeout. (There is no reason to block during the simulation as it only decreases simulator performance.)

If the timeval pointer is null, setup a new timeval structure to pass into the host select call. Unfortunately, we will need to manually check the return value and throw a retry fault if the return value is zero. Allowing the system call to block will likely deadlock the event queue.

If blocking indefinitely, check the signal list to see if a signal would break the poll out of the retry cycle and try to return the signal interrupt instead.

We need to translate the host file descriptor set into a target file descriptor set. This involves both our internal process fd array and the fd_set defined in header files.

Definition at line 2316 of file syscall_emul.hh.

References BaseBufferArg::copyIn(), BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getSystemPtr(), ThreadContext::getVirtProxy(), ArmISA::i, MipsISA::p, SyscallReturn::retry(), and System::signalList.

◆ sendmsgFunc()

SyscallReturn sendmsgFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	msgPtr,
		int	flags
	)

Reserve buffer space.

Assuming msgHdr.msg_iovlen >= 1, then there is no point calling recvmsg without a buffer.

Cannot instantiate buffers till inside the loop. Create array to hold buffer addresses, to be used during copyIn of send data.

Iterate through the iovec structures: Get the base buffer addreses, reserve iov_len amount of space for each. Put the buf address into the bufferArray for later retrieval.

Free dynamically allocated memory.

Malloced above.

Definition at line 1541 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and MipsISA::p.

◆ sendtoFunc()

SyscallReturn sendtoFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	bufrPtr,
		size_t	bufrLen,
		int	flags,
		Addr	addrPtr,
		socklen_t	addrLen
	)

Definition at line 1371 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and ArmISA::sa.

◆ setpgidFunc()

SyscallReturn setpgidFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	pid,
		int	pgid
	)

Target setpgid() handler.

Definition at line 947 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getSystemPtr(), ThreadContext::Halted, ArmISA::i, System::numContexts(), Process::pgid(), Process::pid(), and System::threadContexts.

Referenced by unameFunc32().

◆ setsockoptFunc()

SyscallReturn setsockoptFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		int	level,
		int	optname,
		Addr	valPtr,
		socklen_t	len
	)

Definition at line 1710 of file syscall_emul.cc.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), ArmISA::len, MipsISA::p, and ArmISA::status.

◆ setTidAddressFunc()

SyscallReturn setTidAddressFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		uint64_t	tidPtr
	)

Target set_tid_address() handler.

Definition at line 301 of file syscall_emul.cc.

References Process::childClearTID, and ThreadContext::getProcessPtr().

Referenced by unameFunc32().

◆ shutdownFunc()

SyscallReturn shutdownFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		int	how
	)

Target shutdown() handler.

Definition at line 1237 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), and MipsISA::p.

◆ socketFunc()

template<class OS >

SyscallReturn socketFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	domain,
		int	type,
		int	prot
	)

Definition at line 2276 of file syscall_emul.hh.

References ArmISA::domain, ThreadContext::getProcessPtr(), MipsISA::p, X86ISA::prot, and type.

◆ socketpairFunc()

template<class OS >

SyscallReturn socketpairFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	domain,
		int	type,
		int	prot,
		Addr	svPtr
	)

Definition at line 2293 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), ArmISA::domain, ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, X86ISA::prot, ArmISA::status, and type.

◆ stat64Func()

template<class OS >

SyscallReturn stat64Func	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	bufPtr
	)

Target stat64() handler.

Definition at line 1247 of file syscall_emul.hh.

References Process::checkPathRedirect(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and PortProxy::tryReadString().

◆ statfsFunc()

template<class OS >

SyscallReturn statfsFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	bufPtr
	)

Target statfs() handler.

Definition at line 1426 of file syscall_emul.hh.

References Process::checkPathRedirect(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), PortProxy::tryReadString(), and warnUnsupportedOS().

◆ statFunc()

template<class OS >

SyscallReturn statFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	bufPtr
	)

Target stat() handler.

Definition at line 1220 of file syscall_emul.hh.

References Process::checkPathRedirect(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and PortProxy::tryReadString().

◆ symlinkFunc()

SyscallReturn symlinkFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	new_pathname
	)

Target symlink() handler.

Definition at line 508 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and MipsISA::p.

◆ sysinfoFunc()

template<class OS >

SyscallReturn sysinfoFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	info
	)

Target sysinfo() handler.

Definition at line 1001 of file syscall_emul.hh.

References BaseBufferArg::copyOut(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), and seconds_since_epoch.

◆ tgkillFunc()

template<class OS >

SyscallReturn tgkillFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgid,
		int	tid,
		int	sig
	)

This system call is intended to allow killing a specific thread within an arbitrary thread group if sanctioned with permission checks. It's usually true that threads share the termination signal as pointed out by the pthread_kill man page and this seems to be the intended usage. Due to this being an emulated environment, assume the following: Threads are allowed to call tgkill because the EUID for all threads should be the same. There is no signal handling mechanism for kernel registration of signal handlers since signals are poorly supported in emulation mode. Since signal handlers cannot be registered, all threads within in a thread group must share the termination signal. We never exhaust PIDs so there's no chance of finding the wrong one due to PID rollover.

Definition at line 2231 of file syscall_emul.hh.

References exitGroupFunc(), ThreadContext::getSystemPtr(), ArmISA::i, System::numContexts(), Process::pid(), Process::tgid(), and System::threadContexts.

◆ timeFunc()

template<class OS >

SyscallReturn timeFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	taddr
	)

Target time() function.

Definition at line 2214 of file syscall_emul.hh.

References ArmISA::byteOrder(), getElapsedTimeMicro(), ThreadContext::getVirtProxy(), htog(), MipsISA::p, seconds_since_epoch, ArmISA::t, and PortProxy::writeBlob().

◆ timesFunc()

template<class OS >

SyscallReturn timesFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	bufPtr
	)

Target times() function.

Definition at line 2190 of file syscall_emul.hh.

References ArmISA::byteOrder(), BaseBufferArg::copyOut(), curTick(), ThreadContext::getVirtProxy(), htog(), and SimClock::Int::s.

◆ truncate64Func()

SyscallReturn truncate64Func	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		int64_t	length
	)

Target truncate64() handler.

Definition at line 598 of file syscall_emul.cc.

References Process::checkPathRedirect(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), length, and PortProxy::tryReadString().

Referenced by unameFunc32().

◆ truncateFunc()

SyscallReturn truncateFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname,
		off_t	length
	)

Target truncate() handler.

Definition at line 566 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), length, MipsISA::p, and PortProxy::tryReadString().

Referenced by osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ umaskFunc()

SyscallReturn umaskFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Target umask() handler.

Definition at line 640 of file syscall_emul.cc.

Referenced by osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), and unameFunc32().

◆ unimplementedFunc()

SyscallReturn unimplementedFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc
	)

Handler for unimplemented syscalls that we haven't thought about.

Definition at line 68 of file syscall_emul.cc.

References fatal, and SyscallDesc::name().

◆ unlinkatFunc()

template<class OS >

SyscallReturn unlinkatFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	dirfd,
		Addr	pathname
	)

Target unlinkat() handler.

Definition at line 952 of file syscall_emul.hh.

References unlinkFunc(), and warn.

◆ unlinkFunc()

SyscallReturn unlinkFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		Addr	pathname
	)

Target unlink() handler.

Definition at line 472 of file syscall_emul.cc.

References ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and PortProxy::tryReadString().

Referenced by SparcISA::getresuidFunc(), osf_setsysinfoFunc(), setThreadAreaFunc(), unameFunc(), unameFunc32(), and unlinkatFunc().

◆ utimesFunc()

template<class OS >

SyscallReturn utimesFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		Addr	pathname,
		Addr	times
	)

Target utimes() handler.

Definition at line 2020 of file syscall_emul.hh.

References ArmISA::byteOrder(), BaseBufferArg::copyIn(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), gtoh(), ArmISA::i, and PortProxy::tryReadString().

◆ wait4Func()

template<class OS >

SyscallReturn wait4Func	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		pid_t	pid,
		Addr	statPtr,
		int	options,
		Addr	rusagePtr
	)

Currently, wait4 is only implemented so that it will wait for children exit conditions which are denoted by a SIGCHLD signals posted into the system signal list. We return no additional information via any of the parameters supplied to wait4. If nothing is found in the system signal list, we will wait indefinitely for SIGCHLD to post by retrying the call.

Definition at line 2575 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyOut(), DPRINTF_SYSCALL, ThreadContext::getProcessPtr(), ThreadContext::getSystemPtr(), ThreadContext::getVirtProxy(), MipsISA::p, SyscallReturn::retry(), and System::signalList.

◆ warnUnsupportedOS()

void warnUnsupportedOS ( std::string syscall_name )

Definition at line 62 of file syscall_emul.cc.

References warn.

Referenced by eventfdFunc(), fallocateFunc(), and statfsFunc().

◆ writeFunc()

template<class OS >

SyscallReturn writeFunc	(	SyscallDesc *	desc,
		int	num,
		ThreadContext *	tc,
		int	tgt_fd,
		Addr	buf_ptr,
		int	nbytes
	)

We don't want to poll on /dev/random. The kernel will not enable the file descriptor for writing unless the entropy in the system falls below write_wakeup_threshold. This is not guaranteed to happen depending on host settings.

Definition at line 2536 of file syscall_emul.hh.

References BufferArg::bufferPtr(), BaseBufferArg::copyIn(), ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), MipsISA::p, and SyscallReturn::retry().

◆ writevFunc()

template<class OS >

SyscallReturn writevFunc	(	SyscallDesc *	desc,
		int	callnum,
		ThreadContext *	tc,
		int	tgt_fd,
		uint64_t	tiov_base,
		size_t	count
	)

Target writev() handler.

Definition at line 1658 of file syscall_emul.hh.

References ArmISA::byteOrder(), X86ISA::count, ThreadContext::getProcessPtr(), ThreadContext::getVirtProxy(), gtoh(), ArmISA::i, MipsISA::p, and PortProxy::readBlob().

Variable Documentation

◆ one_billion

const int one_billion = 1000000000

A readable name for 1,000,000,000, for converting nanoseconds to seconds.

Definition at line 524 of file syscall_emul.hh.

Referenced by getElapsedTimeNano().

◆ one_million

const int one_million = 1000000

A readable name for 1,000,000, for converting microseconds to seconds.

Definition at line 522 of file syscall_emul.hh.

Referenced by getElapsedTimeMicro().

◆ seconds_since_epoch

const unsigned seconds_since_epoch = 1000000000

Approximate seconds since the epoch (1/1/1970).

About a billion, by my reckoning. We want to keep this a constant (not use the real-world time) to keep simulations repeatable.

Definition at line 529 of file syscall_emul.hh.

Referenced by clock_gettimeFunc(), gettimeofdayFunc(), sysinfoFunc(), and timeFunc().

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ NO_STAT64

Typedef Documentation

◆ hst_stat

◆ hst_stat64

◆ hst_statfs

Function Documentation

◆ _llseekFunc()

◆ acceptFunc()

◆ accessFunc()

◆ bindFunc()

◆ brkFunc()

◆ chdirFunc()

◆ chmodFunc()

◆ chownFunc()

◆ clock_getresFunc()

◆ clock_gettimeFunc()

◆ cloneFunc()

◆ closeFunc()

◆ connectFunc()

◆ convertStat64Buf()

◆ convertStatBuf()

◆ copyOutStat64Buf()

◆ copyOutStatBuf()

◆ copyOutStatfsBuf()

◆ dup2Func()

◆ dupFunc()

◆ eventfdFunc()

◆ execveFunc()

◆ exitFunc()

◆ exitGroupFunc()

◆ faccessatFunc()

◆ fallocateFunc()

◆ fchmodFunc()

◆ fchownFunc()

◆ fcntl64Func()

◆ fcntlFunc()

◆ fstat64Func()

◆ fstatat64Func()

◆ fstatfsFunc()

◆ fstatFunc()

◆ ftruncate64Func()

◆ ftruncateFunc()

◆ futexFunc()

◆ getcwdFunc()

◆ getegidFunc()

◆ getElapsedTimeMicro()

◆ getElapsedTimeNano()

◆ geteuidFunc()

◆ getgidFunc()

◆ getgidPseudoFunc()

◆ gethostnameFunc()

◆ getpagesizeFunc()

◆ getpeernameFunc()

◆ getpgrpFunc()

◆ getpidFunc()

◆ getpidPseudoFunc()

◆ getppidFunc()

◆ getrlimitFunc()

◆ getrusageFunc()

◆ getsocknameFunc()

◆ getsockoptFunc()

◆ gettidFunc()

◆ gettimeofdayFunc()

◆ getuidFunc()

◆ getuidPseudoFunc()

◆ ignoreFunc()

◆ ignoreWarnOnceFunc()

◆ ioctlFunc()

◆ linkFunc()

◆ listenFunc()

◆ lseekFunc()

◆ lstat64Func()

◆ lstatFunc()

◆ mkdirFunc()