From b0e9654f8621729400ba627ed8c9bd0bf3833f7a Mon Sep 17 00:00:00 2001 From: Daniel Sanchez Date: Tue, 21 Apr 2009 08:17:36 -0700 Subject: Commit m5threads package. This patch adds limited multithreading support in syscall-emulation mode, by using the clone system call. The clone system call works for Alpha, SPARC and x86, and multithreaded applications run correctly in Alpha and SPARC. --- src/arch/x86/linux/syscalls.cc | 8 ++++---- src/arch/x86/regfile.cc | 12 +++++++++++- 2 files changed, 15 insertions(+), 5 deletions(-) (limited to 'src/arch/x86') diff --git a/src/arch/x86/linux/syscalls.cc b/src/arch/x86/linux/syscalls.cc index 49a7d8b77..4d7bca95c 100644 --- a/src/arch/x86/linux/syscalls.cc +++ b/src/arch/x86/linux/syscalls.cc @@ -267,7 +267,7 @@ SyscallDesc X86_64LinuxProcess::syscallDescs[] = { /* 36 */ SyscallDesc("getitimer", unimplementedFunc), /* 37 */ SyscallDesc("alarm", unimplementedFunc), /* 38 */ SyscallDesc("setitimer", unimplementedFunc), - /* 39 */ SyscallDesc("getpid", unimplementedFunc), + /* 39 */ SyscallDesc("getpid", getpidFunc), /* 40 */ SyscallDesc("sendfile", unimplementedFunc), /* 41 */ SyscallDesc("socket", unimplementedFunc), /* 42 */ SyscallDesc("connect", unimplementedFunc), @@ -284,7 +284,7 @@ SyscallDesc X86_64LinuxProcess::syscallDescs[] = { /* 53 */ SyscallDesc("socketpair", unimplementedFunc), /* 54 */ SyscallDesc("setsockopt", unimplementedFunc), /* 55 */ SyscallDesc("getsockopt", unimplementedFunc), - /* 56 */ SyscallDesc("clone", unimplementedFunc), + /* 56 */ SyscallDesc("clone", cloneFunc), /* 57 */ SyscallDesc("fork", unimplementedFunc), /* 58 */ SyscallDesc("vfork", unimplementedFunc), /* 59 */ SyscallDesc("execve", unimplementedFunc), @@ -430,7 +430,7 @@ SyscallDesc X86_64LinuxProcess::syscallDescs[] = { /* 199 */ SyscallDesc("fremovexattr", unimplementedFunc), /* 200 */ SyscallDesc("tkill", unimplementedFunc), /* 201 */ SyscallDesc("time", unimplementedFunc), - /* 202 */ SyscallDesc("futex", unimplementedFunc), + /* 202 */ SyscallDesc("futex", ignoreFunc), /* 203 */ SyscallDesc("sched_setaffinity", unimplementedFunc), /* 204 */ SyscallDesc("sched_getaffinity", unimplementedFunc), /* 205 */ SyscallDesc("set_thread_area", unimplementedFunc), @@ -459,7 +459,7 @@ SyscallDesc X86_64LinuxProcess::syscallDescs[] = { /* 228 */ SyscallDesc("clock_gettime", unimplementedFunc), /* 229 */ SyscallDesc("clock_getres", unimplementedFunc), /* 230 */ SyscallDesc("clock_nanosleep", unimplementedFunc), - /* 231 */ SyscallDesc("exit_group", exitFunc), + /* 231 */ SyscallDesc("exit_group", exitGroupFunc), /* 232 */ SyscallDesc("epoll_wait", unimplementedFunc), /* 233 */ SyscallDesc("epoll_ctl", unimplementedFunc), /* 234 */ SyscallDesc("tgkill", unimplementedFunc), diff --git a/src/arch/x86/regfile.cc b/src/arch/x86/regfile.cc index 7d01c4bb4..83279902e 100644 --- a/src/arch/x86/regfile.cc +++ b/src/arch/x86/regfile.cc @@ -250,7 +250,17 @@ RegFile::unserialize(EventManager *em, Checkpoint *cp, const string §ion) void X86ISA::copyMiscRegs(ThreadContext *src, ThreadContext *dest) { - panic("copyMiscRegs not implemented for x86!\n"); + //panic("copyMiscRegs not implemented for x86!\n"); + warn("copyMiscRegs is naively implemented for x86\n"); + for (int i = 0; i < X86ISA::NumMiscRegs; ++i) { + if ( ( i != MISCREG_CR1 && + !(i > MISCREG_CR4 && i < MISCREG_CR8) && + !(i > MISCREG_CR8 && i <= MISCREG_CR15) ) == false) { + continue; + } + dest->setMiscRegNoEffect(i, src->readMiscRegNoEffect(i)); + } + } void X86ISA::copyRegs(ThreadContext *src, ThreadContext *dest) -- cgit v1.2.3