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-rw-r--r--src/arch/alpha/linux/process.cc4
-rw-r--r--src/arch/sparc/linux/syscalls.cc24
-rw-r--r--src/arch/sparc/regfile.cc29
-rw-r--r--src/arch/x86/linux/syscalls.cc8
-rw-r--r--src/arch/x86/regfile.cc12
-rw-r--r--src/sim/syscall_emul.cc91
-rw-r--r--src/sim/syscall_emul.hh13
7 files changed, 156 insertions, 25 deletions
diff --git a/src/arch/alpha/linux/process.cc b/src/arch/alpha/linux/process.cc
index aeff9fbed..9886c7ea7 100644
--- a/src/arch/alpha/linux/process.cc
+++ b/src/arch/alpha/linux/process.cc
@@ -434,7 +434,7 @@ SyscallDesc AlphaLinuxProcess::syscallDescs[] = {
/* 309 */ SyscallDesc("get_kernel_syms", unimplementedFunc),
/* 310 */ SyscallDesc("syslog", unimplementedFunc),
/* 311 */ SyscallDesc("reboot", unimplementedFunc),
- /* 312 */ SyscallDesc("clone", unimplementedFunc),
+ /* 312 */ SyscallDesc("clone", cloneFunc),
/* 313 */ SyscallDesc("uselib", unimplementedFunc),
/* 314 */ SyscallDesc("mlock", unimplementedFunc),
/* 315 */ SyscallDesc("munlock", unimplementedFunc),
@@ -527,7 +527,7 @@ SyscallDesc AlphaLinuxProcess::syscallDescs[] = {
/* 402 */ SyscallDesc("io_cancel", unimplementedFunc),
/* 403 */ SyscallDesc("unknown #403", unimplementedFunc),
/* 404 */ SyscallDesc("unknown #404", unimplementedFunc),
- /* 405 */ SyscallDesc("exit_group", exitFunc), // exit all threads...
+ /* 405 */ SyscallDesc("exit_group", exitGroupFunc), // exit all threads...
/* 406 */ SyscallDesc("lookup_dcookie", unimplementedFunc),
/* 407 */ SyscallDesc("sys_epoll_create", unimplementedFunc),
/* 408 */ SyscallDesc("sys_epoll_ctl", unimplementedFunc),
diff --git a/src/arch/sparc/linux/syscalls.cc b/src/arch/sparc/linux/syscalls.cc
index d9651c85c..f4781d886 100644
--- a/src/arch/sparc/linux/syscalls.cc
+++ b/src/arch/sparc/linux/syscalls.cc
@@ -162,7 +162,7 @@ SyscallDesc SparcLinuxProcess::syscall32Descs[] = {
/* 71 */ SyscallDesc("mmap", mmapFunc<Sparc32Linux>),
/* 72 */ SyscallDesc("setreuid32", unimplementedFunc),
/* 73 */ SyscallDesc("munmap", munmapFunc),
- /* 74 */ SyscallDesc("mprotect", unimplementedFunc),
+ /* 74 */ SyscallDesc("mprotect", ignoreFunc),
/* 75 */ SyscallDesc("madvise", unimplementedFunc),
/* 76 */ SyscallDesc("vhangup", unimplementedFunc),
/* 77 */ SyscallDesc("truncate64", unimplementedFunc), //32 bit
@@ -191,20 +191,20 @@ SyscallDesc SparcLinuxProcess::syscall32Descs[] = {
/* 100 */ SyscallDesc("getpriority", unimplementedFunc), //32 bit
/* 101 */ SyscallDesc("rt_sigreturn", unimplementedFunc), //32 bit
/* 102 */ SyscallDesc("rt_sigaction", ignoreFunc), //32 bit
- /* 103 */ SyscallDesc("rt_sigprocmask", unimplementedFunc), //32 bit
+ /* 103 */ SyscallDesc("rt_sigprocmask", ignoreFunc), //32 bit
/* 104 */ SyscallDesc("rt_sigpending", unimplementedFunc), //32 bit
/* 105 */ SyscallDesc("rt_sigtimedwait", unimplementedFunc),
/* 106 */ SyscallDesc("rt_sigqueueinfo", unimplementedFunc), //32 bit
/* 107 */ SyscallDesc("rt_sigsuspend", unimplementedFunc),
/* 108 */ SyscallDesc("setresuid32", unimplementedFunc),
/* 109 */ SyscallDesc("getresuid32", getresuidFunc),
- /* 110 */ SyscallDesc("setresgid32", unimplementedFunc),
+ /* 110 */ SyscallDesc("setresgid32", ignoreFunc),
/* 111 */ SyscallDesc("getresgid32", unimplementedFunc),
/* 112 */ SyscallDesc("setregid32", unimplementedFunc),
/* 113 */ SyscallDesc("revcmsg", unimplementedFunc),
/* 114 */ SyscallDesc("sendmsg", unimplementedFunc),
/* 115 */ SyscallDesc("getgroups32", unimplementedFunc), //32 bit
- /* 116 */ SyscallDesc("gettimeofday", unimplementedFunc), //32 bit
+ /* 116 */ SyscallDesc("gettimeofday", gettimeofdayFunc<Sparc32Linux>), //32 bit
/* 117 */ SyscallDesc("getrusage", unimplementedFunc), //32 bit
/* 118 */ SyscallDesc("getsockopt", unimplementedFunc),
/* 119 */ SyscallDesc("getcwd", getcwdFunc),
@@ -276,7 +276,7 @@ SyscallDesc SparcLinuxProcess::syscall32Descs[] = {
/* 185 */ SyscallDesc("setpgid", unimplementedFunc), //32 bit
/* 186 */ SyscallDesc("fremovexattr", unimplementedFunc), //32 bit
/* 187 */ SyscallDesc("tkill", unimplementedFunc), //32 bit
- /* 188 */ SyscallDesc("exit_group", exitFunc), //32 bit
+ /* 188 */ SyscallDesc("exit_group", exitGroupFunc), //32 bit
/* 189 */ SyscallDesc("uname", unameFunc),
/* 190 */ SyscallDesc("init_module", unimplementedFunc), //32 bit
/* 191 */ SyscallDesc("personality", unimplementedFunc),
@@ -305,7 +305,7 @@ SyscallDesc SparcLinuxProcess::syscall32Descs[] = {
/* 214 */ SyscallDesc("sysinfo", unimplementedFunc), //32 bit
/* 215 */ SyscallDesc("ipc", unimplementedFunc), //32 bit
/* 216 */ SyscallDesc("sigreturn", unimplementedFunc), //32 bit
- /* 217 */ SyscallDesc("clone", unimplementedFunc),
+ /* 217 */ SyscallDesc("clone", cloneFunc),
/* 218 */ SyscallDesc("ioprio_get", unimplementedFunc), //32 bit
/* 219 */ SyscallDesc("adjtimex", unimplementedFunc), //32 bit
/* 220 */ SyscallDesc("sigprocmask", unimplementedFunc), //32 bit
@@ -468,7 +468,7 @@ SyscallDesc SparcLinuxProcess::syscallDescs[] = {
/* 71 */ SyscallDesc("mmap", mmapFunc<SparcLinux>),
/* 72 */ SyscallDesc("setreuid32", unimplementedFunc),
/* 73 */ SyscallDesc("munmap", munmapFunc),
- /* 74 */ SyscallDesc("mprotect", unimplementedFunc),
+ /* 74 */ SyscallDesc("mprotect", ignoreFunc),
/* 75 */ SyscallDesc("madvise", unimplementedFunc),
/* 76 */ SyscallDesc("vhangup", unimplementedFunc),
/* 77 */ SyscallDesc("truncate64", unimplementedFunc),
@@ -497,20 +497,20 @@ SyscallDesc SparcLinuxProcess::syscallDescs[] = {
/* 100 */ SyscallDesc("getpriority", unimplementedFunc),
/* 101 */ SyscallDesc("rt_sigreturn", unimplementedFunc),
/* 102 */ SyscallDesc("rt_sigaction", ignoreFunc),
- /* 103 */ SyscallDesc("rt_sigprocmask", unimplementedFunc),
+ /* 103 */ SyscallDesc("rt_sigprocmask", ignoreFunc),
/* 104 */ SyscallDesc("rt_sigpending", unimplementedFunc),
/* 105 */ SyscallDesc("rt_sigtimedwait", unimplementedFunc),
/* 106 */ SyscallDesc("rt_sigqueueinfo", unimplementedFunc),
/* 107 */ SyscallDesc("rt_sigsuspend", unimplementedFunc),
/* 108 */ SyscallDesc("setresuid", unimplementedFunc),
/* 109 */ SyscallDesc("getresuid", getresuidFunc),
- /* 110 */ SyscallDesc("setresgid", unimplementedFunc),
+ /* 110 */ SyscallDesc("setresgid", ignoreFunc),
/* 111 */ SyscallDesc("getresgid", unimplementedFunc),
/* 112 */ SyscallDesc("setregid32", unimplementedFunc),
/* 113 */ SyscallDesc("recvmsg", unimplementedFunc),
/* 114 */ SyscallDesc("sendmsg", unimplementedFunc),
/* 115 */ SyscallDesc("getgroups32", unimplementedFunc),
- /* 116 */ SyscallDesc("gettimeofday", unimplementedFunc),
+ /* 116 */ SyscallDesc("gettimeofday", gettimeofdayFunc<SparcLinux>),
/* 117 */ SyscallDesc("getrusage", unimplementedFunc),
/* 118 */ SyscallDesc("getsockopt", unimplementedFunc),
/* 119 */ SyscallDesc("getcwd", unimplementedFunc),
@@ -582,7 +582,7 @@ SyscallDesc SparcLinuxProcess::syscallDescs[] = {
/* 185 */ SyscallDesc("setpgid", unimplementedFunc),
/* 186 */ SyscallDesc("fremovexattr", unimplementedFunc),
/* 187 */ SyscallDesc("tkill", unimplementedFunc),
- /* 188 */ SyscallDesc("exit_group", exitFunc),
+ /* 188 */ SyscallDesc("exit_group", exitGroupFunc),
/* 189 */ SyscallDesc("uname", unameFunc),
/* 190 */ SyscallDesc("init_module", unimplementedFunc),
/* 191 */ SyscallDesc("personality", unimplementedFunc),
@@ -611,7 +611,7 @@ SyscallDesc SparcLinuxProcess::syscallDescs[] = {
/* 214 */ SyscallDesc("sysinfo", unimplementedFunc),
/* 215 */ SyscallDesc("ipc", unimplementedFunc),
/* 216 */ SyscallDesc("sigreturn", unimplementedFunc),
- /* 217 */ SyscallDesc("clone", unimplementedFunc),
+ /* 217 */ SyscallDesc("clone", cloneFunc),
/* 218 */ SyscallDesc("ioprio_get", unimplementedFunc),
/* 219 */ SyscallDesc("adjtimex", unimplementedFunc),
/* 220 */ SyscallDesc("sigprocmask", unimplementedFunc),
diff --git a/src/arch/sparc/regfile.cc b/src/arch/sparc/regfile.cc
index 1c172a4d5..4efac3d4e 100644
--- a/src/arch/sparc/regfile.cc
+++ b/src/arch/sparc/regfile.cc
@@ -352,10 +352,31 @@ void SparcISA::copyMiscRegs(ThreadContext *src, ThreadContext *dest)
void SparcISA::copyRegs(ThreadContext *src, ThreadContext *dest)
{
- // First loop through the integer registers.
- for (int i = 0; i < SparcISA::NumIntRegs; ++i) {
- dest->setIntReg(i, src->readIntReg(i));
+ //First loop through the integer registers.
+ int old_gl = src->readMiscRegNoEffect(MISCREG_GL);
+ int old_cwp = src->readMiscRegNoEffect(MISCREG_CWP);
+ //Globals
+ for (int x = 0; x < MaxGL; ++x) {
+ src->setMiscRegNoEffect(MISCREG_GL, x);
+ dest->setMiscRegNoEffect(MISCREG_GL, x);
+ for (int y = 0; y < 8; y++)
+ dest->setIntReg(y, src->readIntReg(y));
}
+ //Locals/Ins/Outs
+ for (int x = 0; x < NWindows; ++x) {
+ src->setMiscRegNoEffect(MISCREG_CWP, x);
+ dest->setMiscRegNoEffect(MISCREG_CWP, x);
+ for (int y = 8; y < 32; y++)
+ dest->setIntReg(y, src->readIntReg(y));
+ }
+ //MicroIntRegs
+ for (int y = 0; y < NumMicroIntRegs; ++y)
+ dest->setIntReg(y+32, src->readIntReg(y+32));
+
+ //Restore src's GL, CWP
+ src->setMiscRegNoEffect(MISCREG_GL, old_gl);
+ src->setMiscRegNoEffect(MISCREG_CWP, old_cwp);
+
// Then loop through the floating point registers.
for (int i = 0; i < SparcISA::NumFloatRegs; ++i) {
@@ -365,8 +386,10 @@ void SparcISA::copyRegs(ThreadContext *src, ThreadContext *dest)
// Copy misc. registers
copyMiscRegs(src, dest);
+
// Lastly copy PC/NPC
dest->setPC(src->readPC());
dest->setNextPC(src->readNextPC());
dest->setNextNPC(src->readNextNPC());
}
+
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 &section)
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)
diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index f0a693db0..d3161de26 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -106,6 +106,19 @@ exitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
SyscallReturn
+exitGroupFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
+{
+ // really should just halt all thread contexts belonging to this
+ // process in case there's another process running...
+ exitSimLoop("target called exit()",
+ process->getSyscallArg(tc, 0) & 0xff);
+
+ return 1;
+}
+
+
+SyscallReturn
getpagesizeFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
{
return (int)VMPageSize;
@@ -641,3 +654,81 @@ getegidFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
}
+SyscallReturn
+cloneFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+ ThreadContext *tc)
+{
+ DPRINTF(SyscallVerbose, "In sys_clone:\n");
+ DPRINTF(SyscallVerbose, " Flags=%llx\n", tc->getSyscallArg(0));
+ DPRINTF(SyscallVerbose, " Child stack=%llx\n", tc->getSyscallArg(1));
+
+
+ if (tc->getSyscallArg(0) != 0x10f00) {
+ warn("This sys_clone implementation assumes flags CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD (0x10f00), and may not work correctly with given flags 0x%llx\n", tc->getSyscallArg(0));
+ }
+
+ ThreadContext* ctc; //child thread context
+ if ( ( ctc = process->findFreeContext() ) != NULL ) {
+ DPRINTF(SyscallVerbose, " Found unallocated thread context\n");
+
+ ctc->clearArchRegs();
+
+ //Arch-specific cloning code
+ #if THE_ISA == ALPHA_ISA or THE_ISA == X86_ISA
+ //Cloning the misc. regs for these archs is enough
+ TheISA::copyMiscRegs(tc, ctc);
+ #elif THE_ISA == SPARC_ISA
+ TheISA::copyRegs(tc, ctc);
+
+ //TODO: Explain what this code actually does :-)
+ ctc->setIntReg(NumIntArchRegs + 6, 0);
+ ctc->setIntReg(NumIntArchRegs + 4, 0);
+ ctc->setIntReg(NumIntArchRegs + 3, NWindows - 2);
+ ctc->setIntReg(NumIntArchRegs + 5, NWindows);
+ ctc->setMiscRegNoEffect(MISCREG_CWP, 0);
+ ctc->setIntReg(NumIntArchRegs + 7, 0);
+ ctc->setMiscRegNoEffect(MISCREG_TL, 0);
+ ctc->setMiscRegNoEffect(MISCREG_ASI, ASI_PRIMARY);
+
+ for (int y = 8; y < 32; y++)
+ ctc->setIntReg(y, tc->readIntReg(y));
+ #else
+ fatal("sys_clone is not implemented for this ISA\n");
+ #endif
+
+ //Set up stack register
+ ctc->setIntReg(TheISA::StackPointerReg, tc->getSyscallArg(1));
+
+ //Set up syscall return values in parent and child
+ ctc->setIntReg(ReturnValueReg, 0); //return value, child
+
+ //Alpha needs SyscallSuccessReg=0 in child
+ #if THE_ISA == ALPHA_ISA
+ ctc->setIntReg(SyscallSuccessReg, 0);
+ #endif
+
+ //In SPARC/Linux, clone returns 0 on pseudo-return register if parent, non-zero if child
+ #if THE_ISA == SPARC_ISA
+ tc->setIntReg(TheISA::SyscallPseudoReturnReg, 0);
+ ctc->setIntReg(TheISA::SyscallPseudoReturnReg, 1);
+ #endif
+
+ ctc->setPC(tc->readNextPC());
+ ctc->setNextPC(tc->readNextPC() + sizeof(TheISA::MachInst));
+
+ //In SPARC, need NNPC too...
+ #if THE_ISA == SPARC_ISA
+ ctc->setNextNPC(tc->readNextNPC() + sizeof(TheISA::MachInst));
+ #endif
+
+ ctc->activate();
+
+ // Should return nonzero child TID in parent's syscall return register,
+ // but for our pthread library any non-zero value will work
+ return 1;
+ } else {
+ fatal("Called sys_clone, but no unallocated thread contexts found!\n");
+ return 0;
+ }
+}
+
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index 0b0e73692..e995bd487 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -183,10 +183,14 @@ SyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
SyscallReturn ignoreFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
-/// Target exit() handler: terminate simulation.
+/// Target exit() handler: terminate current context.
SyscallReturn exitFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
+/// Target exit_group() handler: terminate simulation. (exit all threads)
+SyscallReturn exitGroupFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
+
/// Target getpagesize() handler.
SyscallReturn getpagesizeFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
@@ -308,6 +312,9 @@ SyscallReturn geteuidFunc(SyscallDesc *desc, int num,
SyscallReturn getegidFunc(SyscallDesc *desc, int num,
LiveProcess *p, ThreadContext *tc);
+/// Target clone() handler.
+SyscallReturn cloneFunc(SyscallDesc *desc, int num,
+ LiveProcess *p, ThreadContext *tc);
/// Pseudo Funcs - These functions use a different return convension,
@@ -1013,8 +1020,8 @@ gettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
getElapsedTime(tp->tv_sec, tp->tv_usec);
tp->tv_sec += seconds_since_epoch;
- tp->tv_sec = htog(tp->tv_sec);
- tp->tv_usec = htog(tp->tv_usec);
+ tp->tv_sec = TheISA::htog(tp->tv_sec);
+ tp->tv_usec = TheISA::htog(tp->tv_usec);
tp.copyOut(tc->getMemPort());
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 10:10:31 +0000