changeset 4e3bf51208ba in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=4e3bf51208ba
description:
syscall_emul: Implement clock_getres() system call
This patch implements the clock_getres() system call for arm and x86 in
linux
SE mode.
diffstat:
src/arch/arm/linux/process.cc | 2 +-
src/arch/x86/linux/process.cc | 2 +-
src/sim/syscall_emul.hh | 17 +++++++++++++++++
3 files changed, 19 insertions(+), 2 deletions(-)
diffs (51 lines):
diff -r b318499f676c -r 4e3bf51208ba src/arch/arm/linux/process.cc
--- a/src/arch/arm/linux/process.cc Wed Feb 10 04:08:27 2016 -0500
+++ b/src/arch/arm/linux/process.cc Sat Feb 13 12:33:07 2016 -0500
@@ -383,7 +383,7 @@
/* 261 */ SyscallDesc("timer_delete", unimplementedFunc),
/* 262 */ SyscallDesc("clock_settime", unimplementedFunc),
/* 263 */ SyscallDesc("clock_gettime", clock_gettimeFunc<ArmLinux32>),
- /* 264 */ SyscallDesc("clock_getres", unimplementedFunc),
+ /* 264 */ SyscallDesc("clock_getres", clock_getresFunc<ArmLinux32>),
/* 265 */ SyscallDesc("clock_nanosleep", unimplementedFunc),
/* 266 */ SyscallDesc("statfs64", unimplementedFunc),
/* 267 */ SyscallDesc("fstatfs64", unimplementedFunc),
diff -r b318499f676c -r 4e3bf51208ba src/arch/x86/linux/process.cc
--- a/src/arch/x86/linux/process.cc Wed Feb 10 04:08:27 2016 -0500
+++ b/src/arch/x86/linux/process.cc Sat Feb 13 12:33:07 2016 -0500
@@ -447,7 +447,7 @@
/* 226 */ SyscallDesc("timer_delete", unimplementedFunc),
/* 227 */ SyscallDesc("clock_settime", unimplementedFunc),
/* 228 */ SyscallDesc("clock_gettime", clock_gettimeFunc<X86Linux64>),
- /* 229 */ SyscallDesc("clock_getres", unimplementedFunc),
+ /* 229 */ SyscallDesc("clock_getres", clock_getresFunc<X86Linux64>),
/* 230 */ SyscallDesc("clock_nanosleep", unimplementedFunc),
/* 231 */ SyscallDesc("exit_group", exitGroupFunc),
/* 232 */ SyscallDesc("epoll_wait", unimplementedFunc),
diff -r b318499f676c -r 4e3bf51208ba src/sim/syscall_emul.hh
--- a/src/sim/syscall_emul.hh Wed Feb 10 04:08:27 2016 -0500
+++ b/src/sim/syscall_emul.hh Sat Feb 13 12:33:07 2016 -0500
@@ -1357,6 +1357,23 @@
return 0;
}
+/// Target clock_getres() function.
+template <class OS>
+SyscallReturn
+clock_getresFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
+{
+ int index = 1;
+ TypedBufferArg<typename OS::timespec> tp(p->getSyscallArg(tc, index));
+
+ // Set resolution at ns, which is what clock_gettime() returns
+ tp->tv_sec = 0;
+ tp->tv_nsec = 1;
+
+ tp.copyOut(tc->getMemProxy());
+
+ return 0;
+}
+
/// Target gettimeofday() handler.
template <class OS>
SyscallReturn
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