riscv: [Patch 6/5] Improve Linux emulation for RISC-V

This is an add-on patch for the original series that implemented RISC-V
that improves the implementation of Linux emulation for SE mode. Basically
it cleans up linux/linux.hh by removing constants that haven't been
defined for the RISC-V Linux proxy kernel and rearranging the stat
struct so it aligns with RISC-V's implementation of it. It also adds
placeholders for system calls that have been given numbers in RISC-V
but haven't been given implementations yet. These system calls are
as follows:
- readlinkat
- sigprocmask
- ioctl
- clock_gettime
- getrusage
- getrlimit
- setrlimit

The first five patches implemented RISC-V with the base ISA and multiply,
floating point, and atomic extensions and added support for detailed
CPU models with memory timing.

[Fixed incompatibility with changes made from patch 1.]
Signed-off by: Alec Roelke

Signed-off by: Jason Lowe-Power <jason@lowepower.com>

1 files changed, 7 insertions, 7 deletions

diff --git a/src/arch/riscv/linux/process.cc b/src/arch/riscv/linux/process.cc
index e1c9ea2a2..7884b83b2 100644
--- a/src/arch/riscv/linux/process.cc
+++ b/src/arch/riscv/linux/process.cc
@@ -71,13 +71,13 @@ unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
 std::map<int, SyscallDesc> RiscvLinuxProcess::syscallDescs = {
     {17, SyscallDesc("getcwd", getcwdFunc)},
     {23, SyscallDesc("dup", dupFunc)},
-    {25, SyscallDesc("fcntl", fcntlFunc)},
+    {25, SyscallDesc("fcntl", fcntl64Func)},
     {29, SyscallDesc("ioctl", ioctlFunc<RiscvLinux>)},
     {34, SyscallDesc("mkdirat", unimplementedFunc)},
     {35, SyscallDesc("unlinkat", unlinkatFunc<RiscvLinux>)},
     {37, SyscallDesc("linkat", unimplementedFunc)},
     {38, SyscallDesc("renameat", renameatFunc<RiscvLinux>)},
-    {46, SyscallDesc("ftruncate", ftruncateFunc)},
+    {46, SyscallDesc("ftruncate", ftruncate64Func)},
     {48, SyscallDesc("faccessat", faccessatFunc<RiscvLinux>)},
     {49, SyscallDesc("chdir", unimplementedFunc)},
     {56, SyscallDesc("openat", openatFunc<RiscvLinux>)},
@@ -88,10 +88,10 @@ std::map<int, SyscallDesc> RiscvLinuxProcess::syscallDescs = {
     {64, SyscallDesc("write", writeFunc)},
     {66, SyscallDesc("writev", writevFunc<RiscvLinux>)},
     {67, SyscallDesc("pread", unimplementedFunc)},
-    {68, SyscallDesc("pwrite", unimplementedFunc)},
+    {68, SyscallDesc("pwrite", pwrite64Func<RiscvLinux>)},
     {78, SyscallDesc("readlinkat", readlinkatFunc<RiscvLinux>)},
-    {79, SyscallDesc("fstatat", unimplementedFunc)},
-    {80, SyscallDesc("fstat", fstatFunc<RiscvLinux>)},
+    {79, SyscallDesc("fstatat", fstatat64Func<RiscvLinux>)},
+    {80, SyscallDesc("fstat", fstat64Func<RiscvLinux>)},
     {93, SyscallDesc("exit", exitFunc)},
     {94, SyscallDesc("exit_group", exitGroupFunc)},
     {113, SyscallDesc("clock_gettime", clock_gettimeFunc<RiscvLinux>)},
@@ -119,8 +119,8 @@ std::map<int, SyscallDesc> RiscvLinuxProcess::syscallDescs = {
     {1026, SyscallDesc("unlink", unlinkFunc)},
     {1030, SyscallDesc("mkdir", mkdirFunc)},
     {1033, SyscallDesc("access", accessFunc)},
-    {1038, SyscallDesc("stat", statFunc<RiscvLinux>)},
-    {1039, SyscallDesc("lstat", lstatFunc<RiscvLinux>)},
+    {1038, SyscallDesc("stat", stat64Func<RiscvLinux>)},
+    {1039, SyscallDesc("lstat", lstat64Func<RiscvLinux>)},
     {1062, SyscallDesc("time", timeFunc<RiscvLinux>)},
     {2011, SyscallDesc("getmainvars", unimplementedFunc)},
 };