arch-x86: Ignore certain syscalls called in ROCm 4

fdatasync, sigaltstack, and prctl are called by the ROCm 4 stack, but
were unimplemented. Based on testing, we can change these to ignoreFunc
without affecting program correctness.

sched_yield gets changed to ignoreWarnOnceFunc, as it gets called
significantly more in ROCm 4.

Change-Id: I566b1d71d989c54bfc559d5b83790dff73a38b28
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46241
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>

src/arch/x86/linux/syscall_tbl64.cc

@@ -60,7 +60,7 @@ SyscallDescTable<EmuLinux::SyscallABI64> EmuLinux::syscallDescs64 = {
     {  21, "access", ignoreFunc },
     {  22, "pipe", pipeFunc },
     {  23, "select", selectFunc<X86Linux64> },
-    {  24, "sched_yield", ignoreFunc },
+    {  24, "sched_yield", ignoreWarnOnceFunc },
     {  25, "mremap", mremapFunc<X86Linux64> },
     {  26, "msync" },
     {  27, "mincore" },
@@ -111,7 +111,7 @@ SyscallDescTable<EmuLinux::SyscallABI64> EmuLinux::syscallDescs64 = {
     {  72, "fcntl", fcntlFunc },
     {  73, "flock" },
     {  74, "fsync" },
-    {  75, "fdatasync" },
+    {  75, "fdatasync", ignoreFunc },
     {  76, "truncate", truncateFunc },
     {  77, "ftruncate", ftruncateFunc },
 #if defined(SYS_getdents)
@@ -171,7 +171,7 @@ SyscallDescTable<EmuLinux::SyscallABI64> EmuLinux::syscallDescs64 = {
     { 128, "rt_sigtimedwait" },
     { 129, "rt_sigqueueinfo" },
     { 130, "rt_sigsuspend" },
-    { 131, "sigaltstack" },
+    { 131, "sigaltstack", ignoreFunc },
     { 132, "utime" },
     { 133, "mknod", mknodFunc },
     { 134, "uselib" },
@@ -197,7 +197,7 @@ SyscallDescTable<EmuLinux::SyscallABI64> EmuLinux::syscallDescs64 = {
     { 154, "modify_ldt" },
     { 155, "pivot_root" },
     { 156, "_sysctl" },
-    { 157, "prctl" },
+    { 157, "prctl", ignoreFunc },
     { 158, "arch_prctl", archPrctlFunc },
     { 159, "adjtimex" },
     { 160, "setrlimit", ignoreFunc },