Ciro Santilli has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/28590 )
Change subject: sim-se: implement the getcpu syscall
......................................................................
sim-se: implement the getcpu syscall
Change-Id: I63a1384646829b8cf68453c42aed6a7d12172787
---
M src/arch/arm/linux/process.cc
M src/arch/x86/linux/process.cc
M src/sim/syscall_emul.cc
M src/sim/syscall_emul.hh
4 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/src/arch/arm/linux/process.cc b/src/arch/arm/linux/process.cc
index b5b6553..55141ba 100644
--- a/src/arch/arm/linux/process.cc
+++ b/src/arch/arm/linux/process.cc
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010-2013, 2015 ARM Limited
+ * Copyright (c) 2010-2013, 2015, 2020 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
@@ -476,7 +476,7 @@
{ base + 342, "tee" },
{ base + 343, "vmsplice" },
{ base + 344, "move_pages" },
- { base + 345, "getcpu" },
+ { base + 345, "getcpu", getcpuFunc },
{ base + 346, "epoll_pwait" },
{ base + 347, "sys_kexec_load" },
{ base + 348, "sys_utimensat" },
@@ -681,7 +681,7 @@
{ base + 165, "getrusage", getrusageFunc<ArmLinux64> },
{ base + 166, "umask" },
{ base + 167, "prctl" },
- { base + 168, "getcpu" },
+ { base + 168, "getcpu", getcpuFunc },
{ base + 169, "gettimeofday", gettimeofdayFunc<ArmLinux64> },
{ base + 170, "settimeofday" },
{ base + 171, "adjtimex" },
diff --git a/src/arch/x86/linux/process.cc b/src/arch/x86/linux/process.cc
index 6b50dbf..2c594e7 100644
--- a/src/arch/x86/linux/process.cc
+++ b/src/arch/x86/linux/process.cc
@@ -566,7 +566,7 @@
{ 306, "syncfs" },
{ 307, "sendmmsg" },
{ 308, "setns" },
- { 309, "getcpu" },
+ { 309, "getcpu", getcpuFunc },
{ 310, "proess_vm_readv" },
{ 311, "proess_vm_writev" },
{ 312, "kcmp" },
@@ -914,7 +914,7 @@
{ 315, "tee" },
{ 316, "vmsplice" },
{ 317, "move_pages" },
- { 318, "getcpu" },
+ { 318, "getcpu", getcpuFunc },
{ 319, "epoll_pwait" },
{ 320, "utimensat" },
{ 321, "signalfd" },
diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index bffedfd..918a7bd 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -1633,3 +1633,15 @@
return (status == -1) ? -errno : status;
}
+SyscallReturn
+getcpuFunc(SyscallDesc *desc, ThreadContext *tc,
+ Addr cpu_ptr, Addr node_ptr, Addr tcache_ptr)
+{
+ // unsigned is the same size (4) on all Linux supported ISAs.
+ uint32_t result = htog(tc->contextId(),
+ tc->getSystemPtr()->getGuestByteOrder());
+ BufferArg result_buf(cpu_ptr, sizeof(result));
+ memcpy(result_buf.bufferPtr(), &result, sizeof(result));
+ result_buf.copyOut(tc->getVirtProxy());
+ return 0;
+}
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index 5bd9f54..bb3b418 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012-2013, 2015, 2019 ARM Limited
+ * Copyright (c) 2012-2013, 2015, 2019-2020 ARM Limited
* Copyright (c) 2015 Advanced Micro Devices, Inc.
* All rights reserved
*
@@ -354,6 +354,9 @@
int tgt_fd, int level, int optname,
Addr valPtr, socklen_t len);
+SyscallReturn getcpuFunc(SyscallDesc *desc, ThreadContext *tc,
+ Addr cpu_ptr, Addr node_ptr, Addr tcache_ptr);
+
// Target getsockname() handler.
SyscallReturn getsocknameFunc(SyscallDesc *desc, ThreadContext *tc,
int tgt_fd, Addr addrPtr, Addr lenPtr);
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I63a1384646829b8cf68453c42aed6a7d12172787
Gerrit-Change-Number: 28590
Gerrit-PatchSet: 1
Gerrit-Owner: Ciro Santilli <ciro.santi...@arm.com>
Gerrit-MessageType: newchange
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