File riscv.patch of Package libqt5-qtwebengine

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File riscv.patch of Package libqt5-qtwebengine (Revision 5e53e24d5ac409e5309540f305fce9fd)

Currently displaying revision 5e53e24d5ac409e5309540f305fce9fd , Show latest

Index: qtwebengine-everywhere-src-5.15.0/configure.pri
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/configure.pri
+++ qtwebengine-everywhere-src-5.15.0/configure.pri
@@ -147,6 +147,7 @@ defineTest(qtConfTest_detectArch) {
     contains(QT_ARCH, "i386")|contains(QT_ARCH, "x86_64"): return(true)
     contains(QT_ARCH, "arm")|contains(QT_ARCH, "arm64"): return(true)
     contains(QT_ARCH, "mips"): return(true)
+    contains(QT_ARCH, "riscv64"): return(true)
     qtLog("Architecture not supported.")
     return(false)
 }
Index: qtwebengine-everywhere-src-5.15.0/mkspecs/features/functions.prf
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/mkspecs/features/functions.prf
+++ qtwebengine-everywhere-src-5.15.0/mkspecs/features/functions.prf
@@ -88,6 +88,7 @@ defineReplace(gnArch) {
     contains(qtArch, "arm64"): return(arm64)
     contains(qtArch, "mips"): return(mipsel)
     contains(qtArch, "mips64"): return(mips64el)
+    contains(qtArch, "riscv64"): return(riscv64)
     return(unknown)
 }
 
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/process/launch_posix.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/base/process/launch_posix.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/base/process/launch_posix.cc
@@ -703,7 +703,7 @@ NOINLINE pid_t CloneAndLongjmpInChild(un
   alignas(16) char stack_buf[PTHREAD_STACK_MIN];
 #if defined(ARCH_CPU_X86_FAMILY) || defined(ARCH_CPU_ARM_FAMILY) ||   \
     defined(ARCH_CPU_MIPS_FAMILY) || defined(ARCH_CPU_S390_FAMILY) || \
-    defined(ARCH_CPU_PPC64_FAMILY)
+    defined(ARCH_CPU_PPC64_FAMILY) || defined(ARCH_CPU_RISCV_FAMILY)
   // The stack grows downward.
   void* stack = stack_buf + sizeof(stack_buf);
 #else
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/build/build_config.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/build/build_config.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/build/build_config.h
@@ -166,6 +166,11 @@
 #define ARCH_CPU_32_BITS 1
 #define ARCH_CPU_BIG_ENDIAN 1
 #endif
+#elif defined(__riscv) && __riscv_xlen == 64
+#define ARCH_CPU_RISCV_FAMILY 1
+#define ARCH_CPU_RISCV64 1
+#define ARCH_CPU_64_BITS 1
+#define ARCH_CPU_LITTLE_ENDIAN 1
 #else
 #error Please add support for your architecture in build/build_config.h
 #endif
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/build/config/BUILD.gn
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/build/config/BUILD.gn
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/build/config/BUILD.gn
@@ -238,6 +238,7 @@ config("default_libs") {
       "dl",
       "pthread",
       "rt",
+      "atomic",
     ]
   }
 }
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
@@ -298,3 +298,20 @@ gcc_toolchain("mips64") {
     is_clang = false
   }
 }
+
+gcc_toolchain("riscv64") {
+  cc = "gcc"
+  cxx = "g++"
+
+  readelf = "readelf"
+  nm = "nm"
+  ar = "ar"
+  ld = cxx
+
+  toolchain_args = {
+    current_cpu = "riscv64"
+    current_os = "linux"
+    is_clang = false
+  }
+}
+
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/features.gni
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/features.gni
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/features.gni
@@ -12,6 +12,6 @@ use_seccomp_bpf =
     (is_linux || is_android) &&
     (current_cpu == "x86" || current_cpu == "x64" || current_cpu == "arm" ||
      current_cpu == "arm64" || current_cpu == "mipsel" ||
-     current_cpu == "mips64el")
+     current_cpu == "mips64el" || current_cpu == "riscv64")
 
 use_seccomp_bpf = use_seccomp_bpf || is_nacl_nonsfi
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/bpf_dsl/linux_syscall_ranges.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/bpf_dsl/linux_syscall_ranges.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/bpf_dsl/linux_syscall_ranges.h
@@ -56,6 +56,12 @@
 #define MAX_PUBLIC_SYSCALL __NR_syscalls
 #define MAX_SYSCALL MAX_PUBLIC_SYSCALL
 
+#elif defined(__riscv)
+
+#define MIN_SYSCALL 0u
+#define MAX_PUBLIC_SYSCALL 1024u
+#define MAX_SYSCALL MAX_PUBLIC_SYSCALL
+
 #else
 #error "Unsupported architecture"
 #endif
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/bpf_dsl/seccomp_macros.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/bpf_dsl/seccomp_macros.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/bpf_dsl/seccomp_macros.h
@@ -346,6 +346,46 @@ struct regs_struct {
 #define SECCOMP_PT_PARM4(_regs) (_regs).regs[3]
 #define SECCOMP_PT_PARM5(_regs) (_regs).regs[4]
 #define SECCOMP_PT_PARM6(_regs) (_regs).regs[5]
+
+#elif defined(__riscv)
+struct regs_struct {
+  unsigned long regs[32];
+};
+
+#define SECCOMP_ARCH AUDIT_ARCH_RISCV64
+
+#define SECCOMP_REG(_ctx, _reg) ((_ctx)->uc_mcontext.__gregs[_reg])
+
+#define SECCOMP_RESULT(_ctx) SECCOMP_REG(_ctx, REG_A0)
+#define SECCOMP_SYSCALL(_ctx) SECCOMP_REG(_ctx, REG_A0+7)
+#define SECCOMP_IP(_ctx) (_ctx)->uc_mcontext.__gregs[REG_PC]
+#define SECCOMP_PARM1(_ctx) SECCOMP_REG(_ctx, REG_A0)
+#define SECCOMP_PARM2(_ctx) SECCOMP_REG(_ctx, REG_A0+1)
+#define SECCOMP_PARM3(_ctx) SECCOMP_REG(_ctx, REG_A0+2)
+#define SECCOMP_PARM4(_ctx) SECCOMP_REG(_ctx, REG_A0+3)
+#define SECCOMP_PARM5(_ctx) SECCOMP_REG(_ctx, REG_A0+4)
+#define SECCOMP_PARM6(_ctx) SECCOMP_REG(_ctx, REG_A0+5)
+
+#define SECCOMP_NR_IDX (offsetof(struct arch_seccomp_data, nr))
+#define SECCOMP_ARCH_IDX (offsetof(struct arch_seccomp_data, arch))
+#define SECCOMP_IP_MSB_IDX \
+  (offsetof(struct arch_seccomp_data, instruction_pointer) + 4)
+#define SECCOMP_IP_LSB_IDX \
+  (offsetof(struct arch_seccomp_data, instruction_pointer) + 0)
+#define SECCOMP_ARG_MSB_IDX(nr) \
+  (offsetof(struct arch_seccomp_data, args) + 8 * (nr) + 4)
+#define SECCOMP_ARG_LSB_IDX(nr) \
+  (offsetof(struct arch_seccomp_data, args) + 8 * (nr) + 0)
+
+#define SECCOMP_PT_RESULT(_regs) (_regs).regs[REG_A0]
+#define SECCOMP_PT_SYSCALL(_regs) (_regs).regs[REG_A0+7]
+#define SECCOMP_PT_IP(_regs) (_regs).regs[REG_PC]
+#define SECCOMP_PT_PARM1(_regs) (_regs).regs[REG_A0]
+#define SECCOMP_PT_PARM2(_regs) (_regs).regs[REG_A0+1]
+#define SECCOMP_PT_PARM3(_regs) (_regs).regs[REG_A0+2]
+#define SECCOMP_PT_PARM4(_regs) (_regs).regs[REG_A0+3]
+#define SECCOMP_PT_PARM5(_regs) (_regs).regs[REG_A0+4]
+#define SECCOMP_PT_PARM6(_regs) (_regs).regs[REG_A0+5]
 #else
 #error Unsupported target platform
 
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/baseline_policy.cc
@@ -170,7 +170,7 @@ ResultExpr EvaluateSyscallImpl(int fs_de
     return RestrictFcntlCommands();
 #endif
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
   // fork() is never used as a system call (clone() is used instead), but we
   // have seen it in fallback code on Android.
   if (sysno == __NR_fork) {
@@ -215,7 +215,7 @@ ResultExpr EvaluateSyscallImpl(int fs_de
   }
 
 #if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
   if (sysno == __NR_mmap)
     return RestrictMmapFlags();
 #endif
@@ -233,7 +233,7 @@ ResultExpr EvaluateSyscallImpl(int fs_de
     return RestrictPrctl();
 
 #if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
   if (sysno == __NR_socketpair) {
     // Only allow AF_UNIX, PF_UNIX. Crash if anything else is seen.
     static_assert(AF_UNIX == PF_UNIX,
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
@@ -36,7 +36,7 @@
 #include <sys/ioctl.h>
 #include <sys/ptrace.h>
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS) && !defined(__arm__) && \
-    !defined(__aarch64__) && !defined(PTRACE_GET_THREAD_AREA)
+    !defined(__aarch64__) && !defined(__riscv) && !defined(PTRACE_GET_THREAD_AREA)
 // Also include asm/ptrace-abi.h since ptrace.h in older libc (for instance
 // the one in Ubuntu 16.04 LTS) is missing PTRACE_GET_THREAD_AREA.
 // asm/ptrace-abi.h doesn't exist on arm32 and PTRACE_GET_THREAD_AREA isn't
@@ -409,7 +409,7 @@ ResultExpr RestrictPrlimit(pid_t target_
 ResultExpr RestrictPtrace() {
   const Arg<int> request(0);
   return Switch(request).CASES((
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
         PTRACE_GETREGS,
         PTRACE_GETFPREGS,
         PTRACE_GET_THREAD_AREA,
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
@@ -80,7 +80,7 @@ bool SyscallSets::IsUmask(int sysno) {
 // Both EPERM and ENOENT are valid errno unless otherwise noted in comment.
 bool SyscallSets::IsFileSystem(int sysno) {
   switch (sysno) {
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_access:  // EPERM not a valid errno.
     case __NR_chmod:
     case __NR_chown:
@@ -112,7 +112,7 @@ bool SyscallSets::IsFileSystem(int sysno
     case __NR_faccessat:  // EPERM not a valid errno.
     case __NR_fchmodat:
     case __NR_fchownat:  // Should be called chownat ?
-#if defined(__x86_64__) || defined(__aarch64__)
+#if defined(__x86_64__) || defined(__aarch64__) || defined(__riscv)
     case __NR_newfstatat:  // fstatat(). EPERM not a valid errno.
 #elif defined(__i386__) || defined(__arm__) || \
     (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_32_BITS))
@@ -195,7 +195,7 @@ bool SyscallSets::IsAllowedFileSystemAcc
     case __NR_oldfstat:
 #endif
 #if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_sync_file_range:  // EPERM not a valid errno.
 #elif defined(__arm__)
     case __NR_arm_sync_file_range:  // EPERM not a valid errno.
@@ -219,7 +219,7 @@ bool SyscallSets::IsDeniedFileSystemAcce
     (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_32_BITS))
     case __NR_ftruncate64:
 #endif
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_getdents:    // EPERM not a valid errno.
 #endif
     case __NR_getdents64:  // EPERM not a valid errno.
@@ -298,7 +298,7 @@ bool SyscallSets::IsProcessPrivilegeChan
 bool SyscallSets::IsProcessGroupOrSession(int sysno) {
   switch (sysno) {
     case __NR_setpgid:
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_getpgrp:
 #endif
     case __NR_setsid:
@@ -327,7 +327,7 @@ bool SyscallSets::IsAllowedSignalHandlin
     case __NR_rt_sigsuspend:
     case __NR_rt_tgsigqueueinfo:
     case __NR_sigaltstack:
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_signalfd:
 #endif
     case __NR_signalfd4:
@@ -351,12 +351,12 @@ bool SyscallSets::IsAllowedOperationOnFd
   switch (sysno) {
     case __NR_close:
     case __NR_dup:
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_dup2:
 #endif
     case __NR_dup3:
 #if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_shutdown:
 #endif
       return true;
@@ -395,7 +395,7 @@ bool SyscallSets::IsAllowedProcessStartO
       return true;
     case __NR_clone:  // Should be parameter-restricted.
     case __NR_setns:  // Privileged.
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_fork:
 #endif
 #if defined(__i386__) || defined(__x86_64__)
@@ -406,7 +406,7 @@ bool SyscallSets::IsAllowedProcessStartO
 #endif
     case __NR_set_tid_address:
     case __NR_unshare:
-#if !defined(__mips__) && !defined(__aarch64__)
+#if !defined(__mips__) && !defined(__aarch64__) && !defined(__riscv)
     case __NR_vfork:
 #endif
     default:
@@ -427,7 +427,7 @@ bool SyscallSets::IsAllowedFutex(int sys
 
 bool SyscallSets::IsAllowedEpoll(int sysno) {
   switch (sysno) {
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_epoll_create:
     case __NR_epoll_wait:
 #endif
@@ -448,14 +448,14 @@ bool SyscallSets::IsAllowedEpoll(int sys
 
 bool SyscallSets::IsAllowedGetOrModifySocket(int sysno) {
   switch (sysno) {
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_pipe:
 #endif
     case __NR_pipe2:
       return true;
     default:
 #if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_socketpair:  // We will want to inspect its argument.
 #endif
       return false;
@@ -465,7 +465,7 @@ bool SyscallSets::IsAllowedGetOrModifySo
 bool SyscallSets::IsDeniedGetOrModifySocket(int sysno) {
   switch (sysno) {
 #if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_accept:
     case __NR_accept4:
     case __NR_bind:
@@ -519,7 +519,7 @@ bool SyscallSets::IsAllowedAddressSpaceA
     case __NR_mincore:
     case __NR_mlockall:
 #if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_mmap:
 #endif
 #if defined(__i386__) || defined(__arm__) || \
@@ -552,7 +552,7 @@ bool SyscallSets::IsAllowedGeneralIo(int
     (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_32_BITS))
     case __NR__llseek:
 #endif
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_poll:
 #endif
     case __NR_ppoll:
@@ -565,7 +565,7 @@ bool SyscallSets::IsAllowedGeneralIo(int
     case __NR_recv:
 #endif
 #if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_recvfrom:  // Could specify source.
     case __NR_recvmsg:   // Could specify source.
 #endif
@@ -580,7 +580,7 @@ bool SyscallSets::IsAllowedGeneralIo(int
     case __NR_send:
 #endif
 #if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_sendmsg:  // Could specify destination.
     case __NR_sendto:   // Could specify destination.
 #endif
@@ -630,7 +630,7 @@ bool SyscallSets::IsSeccomp(int sysno) {
 bool SyscallSets::IsAllowedBasicScheduler(int sysno) {
   switch (sysno) {
     case __NR_sched_yield:
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_pause:
 #endif
     case __NR_nanosleep:
@@ -714,7 +714,7 @@ bool SyscallSets::IsNuma(int sysno) {
     case __NR_getcpu:
     case __NR_mbind:
 #if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_migrate_pages:
 #endif
     case __NR_move_pages:
@@ -743,7 +743,7 @@ bool SyscallSets::IsGlobalProcessEnviron
   switch (sysno) {
     case __NR_acct:  // Privileged.
 #if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
     case __NR_getrlimit:
 #endif
 #if defined(__i386__) || defined(__arm__)
@@ -778,7 +778,7 @@ bool SyscallSets::IsDebug(int sysno) {
 
 bool SyscallSets::IsGlobalSystemStatus(int sysno) {
   switch (sysno) {
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR__sysctl:
     case __NR_sysfs:
 #endif
@@ -796,7 +796,7 @@ bool SyscallSets::IsGlobalSystemStatus(i
 
 bool SyscallSets::IsEventFd(int sysno) {
   switch (sysno) {
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_eventfd:
 #endif
     case __NR_eventfd2:
@@ -832,7 +832,8 @@ bool SyscallSets::IsKeyManagement(int sy
 }
 
 #if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__) || \
-    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS))
+    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS)) || \
+    defined(__riscv)
 bool SyscallSets::IsSystemVSemaphores(int sysno) {
   switch (sysno) {
     case __NR_semctl:
@@ -848,7 +849,8 @@ bool SyscallSets::IsSystemVSemaphores(in
 
 #if defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
     defined(__aarch64__) ||                                         \
-    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS))
+    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS)) || \
+    defined(__riscv)
 // These give a lot of ambient authority and bypass the setuid sandbox.
 bool SyscallSets::IsSystemVSharedMemory(int sysno) {
   switch (sysno) {
@@ -864,7 +866,8 @@ bool SyscallSets::IsSystemVSharedMemory(
 #endif
 
 #if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__) || \
-    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS))
+    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS)) || \
+    defined(__riscv)
 bool SyscallSets::IsSystemVMessageQueue(int sysno) {
   switch (sysno) {
     case __NR_msgctl:
@@ -895,7 +898,8 @@ bool SyscallSets::IsSystemVIpc(int sysno
 
 bool SyscallSets::IsAnySystemV(int sysno) {
 #if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__) || \
-    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS))
+    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS)) || \
+    defined(__riscv)
   return IsSystemVMessageQueue(sysno) || IsSystemVSemaphores(sysno) ||
          IsSystemVSharedMemory(sysno);
 #elif defined(__i386__) || \
@@ -928,7 +932,7 @@ bool SyscallSets::IsAdvancedScheduler(in
 bool SyscallSets::IsInotify(int sysno) {
   switch (sysno) {
     case __NR_inotify_add_watch:
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_inotify_init:
 #endif
     case __NR_inotify_init1:
@@ -1043,7 +1047,7 @@ bool SyscallSets::IsMisc(int sysno) {
 #if defined(__x86_64__)
     case __NR_tuxcall:
 #endif
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_vserver:
 #endif
       return true;
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf-helpers/syscall_sets.h
@@ -49,7 +49,7 @@ class SANDBOX_EXPORT SyscallSets {
 #endif
 
 #if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
   static bool IsNetworkSocketInformation(int sysno);
 #endif
 
@@ -72,18 +72,21 @@ class SANDBOX_EXPORT SyscallSets {
   static bool IsAsyncIo(int sysno);
   static bool IsKeyManagement(int sysno);
 #if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__) || \
-    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS))
+    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS)) || \
+    defined(__riscv)
   static bool IsSystemVSemaphores(int sysno);
 #endif
 #if defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
     defined(__aarch64__) ||                                         \
-    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS))
+    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS)) || \
+    defined(__riscv)
   // These give a lot of ambient authority and bypass the setuid sandbox.
   static bool IsSystemVSharedMemory(int sysno);
 #endif
 
 #if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__) || \
-    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS))
+    (defined(ARCH_CPU_MIPS_FAMILY) && defined(ARCH_CPU_64_BITS)) || \
+    defined(__riscv)
   static bool IsSystemVMessageQueue(int sysno);
 #endif
 
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf/syscall.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/seccomp-bpf/syscall.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/seccomp-bpf/syscall.cc
@@ -16,7 +16,7 @@ namespace sandbox {
 namespace {
 
 #if defined(ARCH_CPU_X86_FAMILY) || defined(ARCH_CPU_ARM_FAMILY) || \
-    defined(ARCH_CPU_MIPS_FAMILY)
+    defined(ARCH_CPU_MIPS_FAMILY) || defined(ARCH_CPU_RISCV_FAMILY)
 // Number that's not currently used by any Linux kernel ABIs.
 const int kInvalidSyscallNumber = 0x351d3;
 #else
@@ -310,6 +310,28 @@ asm(// We need to be able to tell the ke
     "2:ret\n"
     ".cfi_endproc\n"
     ".size SyscallAsm, .-SyscallAsm\n"
+#elif defined(__riscv)
+    ".text\n"
+    ".align 2\n"
+    ".type SyscallAsm, %function\n"
+    "SyscallAsm:\n"
+    ".cfi_startproc\n"
+    "bgez a0,1f\n"
+    "la a0,2f\n"
+    "j 2f\n"
+    "1:mv a7, a0\n"
+    "ld a0, (t0)\n"
+    "ld a1, 8(t0)\n"
+    "ld a2, 16(t0)\n"
+    "ld a3, 24(t0)\n"
+    "ld a4, 32(t0)\n"
+    "ld a5, 40(t0)\n"
+    "ld a6, 48(t0)\n"
+    // Enter the kernel
+    "scall\n"
+    "2:ret\n"
+    ".cfi_endproc\n"
+    ".size SyscallAsm, .-SyscallAsm\n"
 #endif
     );  // asm
 
@@ -427,6 +449,18 @@ intptr_t Syscall::Call(int nr,
     ret = inout;
   }
 
+#elif defined(__riscv)
+  intptr_t ret;
+  {
+    register intptr_t inout __asm__("a0") = nr;
+    register const intptr_t* data __asm__("t0") = args;
+    asm volatile("jal SyscallAsm\n"
+                 : "+r"(inout)
+		 : "r"(data)
+                 : "memory", "a1", "a2", "a3", "a4", "a5", "a6");
+    ret = inout;
+  }
+
 #else
 #error "Unimplemented architecture"
 #endif
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/services/credentials.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/services/credentials.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/services/credentials.cc
@@ -79,7 +79,7 @@ bool ChrootToSafeEmptyDir() {
   pid_t pid = -1;
   alignas(16) char stack_buf[PTHREAD_STACK_MIN];
 #if defined(ARCH_CPU_X86_FAMILY) || defined(ARCH_CPU_ARM_FAMILY) || \
-    defined(ARCH_CPU_MIPS_FAMILY)
+    defined(ARCH_CPU_MIPS_FAMILY) || defined(ARCH_CPU_RISCV_FAMILY)
   // The stack grows downward.
   void* stack = stack_buf + sizeof(stack_buf);
 #else
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/syscall_broker/broker_process.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/syscall_broker/broker_process.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/syscall_broker/broker_process.cc
@@ -107,53 +107,55 @@ bool BrokerProcess::Init(
 
 bool BrokerProcess::IsSyscallAllowed(int sysno) const {
   switch (sysno) {
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_access:
 #endif
     case __NR_faccessat:
       return !fast_check_in_client_ ||
              allowed_command_set_.test(COMMAND_ACCESS);
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_mkdir:
 #endif
     case __NR_mkdirat:
       return !fast_check_in_client_ || allowed_command_set_.test(COMMAND_MKDIR);
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_open:
 #endif
     case __NR_openat:
       return !fast_check_in_client_ || allowed_command_set_.test(COMMAND_OPEN);
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_readlink:
 #endif
     case __NR_readlinkat:
       return !fast_check_in_client_ ||
              allowed_command_set_.test(COMMAND_READLINK);
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_rename:
 #endif
+#ifdef __NR_renameat
     case __NR_renameat:
+#endif
     case __NR_renameat2:
       return !fast_check_in_client_ ||
              allowed_command_set_.test(COMMAND_RENAME);
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_rmdir:
       return !fast_check_in_client_ || allowed_command_set_.test(COMMAND_RMDIR);
 #endif
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_stat:
     case __NR_lstat:
 #endif
 #if defined(__NR_fstatat)
     case __NR_fstatat:
 #endif
-#if defined(__x86_64__) || defined(__aarch64__)
+#if defined(__x86_64__) || defined(__aarch64__) || defined(__riscv)
     case __NR_newfstatat:
 #endif
       return !fast_check_in_client_ || allowed_command_set_.test(COMMAND_STAT);
@@ -168,7 +170,7 @@ bool BrokerProcess::IsSyscallAllowed(int
       return !fast_check_in_client_ || allowed_command_set_.test(COMMAND_STAT);
 #endif
 
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_unlink:
 #endif
     case __NR_unlinkat:
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/system_headers/linux_seccomp.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/system_headers/linux_seccomp.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/system_headers/linux_seccomp.h
@@ -29,6 +29,9 @@
 #ifndef EM_AARCH64
 #define EM_AARCH64 183
 #endif
+#ifndef EM_RISCV
+#define EM_RISCV 243
+#endif
 
 #ifndef __AUDIT_ARCH_64BIT
 #define __AUDIT_ARCH_64BIT 0x80000000
@@ -54,6 +57,9 @@
 #ifndef AUDIT_ARCH_AARCH64
 #define AUDIT_ARCH_AARCH64 (EM_AARCH64 | __AUDIT_ARCH_64BIT | __AUDIT_ARCH_LE)
 #endif
+#ifndef AUDIT_ARCH_RISCV64
+#define AUDIT_ARCH_RISCV64 (EM_RISCV|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
+#endif
 
 // For prctl.h
 #ifndef PR_SET_SECCOMP
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/system_headers/linux_signal.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/system_headers/linux_signal.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/system_headers/linux_signal.h
@@ -13,7 +13,7 @@
 // (not undefined, but defined different values and in different memory
 // layouts). So, fill the gap here.
 #if defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
 
 #define LINUX_SIGHUP 1
 #define LINUX_SIGINT 2
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/system_headers/linux_syscalls.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/sandbox/linux/system_headers/linux_syscalls.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/system_headers/linux_syscalls.h
@@ -35,5 +35,9 @@
 #include "sandbox/linux/system_headers/arm64_linux_syscalls.h"
 #endif
 
+#if defined(__riscv) && __riscv_xlen == 64
+#include "sandbox/linux/system_headers/riscv64_linux_syscalls.h"
+#endif
+
 #endif  // SANDBOX_LINUX_SYSTEM_HEADERS_LINUX_SYSCALLS_H_
 
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/system_headers/riscv64_linux_syscalls.h
===================================================================
--- /dev/null
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/sandbox/linux/system_headers/riscv64_linux_syscalls.h
@@ -0,0 +1,1066 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SANDBOX_LINUX_SYSTEM_HEADERS_RISCV64_LINUX_SYSCALLS_H_
+#define SANDBOX_LINUX_SYSTEM_HEADERS_RISCV64_LINUX_SYSCALLS_H_
+
+#include <asm-generic/unistd.h>
+
+#if !defined(__NR_io_setup)
+#define __NR_io_setup 0
+#endif
+
+#if !defined(__NR_io_destroy)
+#define __NR_io_destroy 1
+#endif
+
+#if !defined(__NR_io_submit)
+#define __NR_io_submit 2
+#endif
+
+#if !defined(__NR_io_cancel)
+#define __NR_io_cancel 3
+#endif
+
+#if !defined(__NR_io_getevents)
+#define __NR_io_getevents 4
+#endif
+
+#if !defined(__NR_setxattr)
+#define __NR_setxattr 5
+#endif
+
+#if !defined(__NR_lsetxattr)
+#define __NR_lsetxattr 6
+#endif
+
+#if !defined(__NR_fsetxattr)
+#define __NR_fsetxattr 7
+#endif
+
+#if !defined(__NR_getxattr)
+#define __NR_getxattr 8
+#endif
+
+#if !defined(__NR_lgetxattr)
+#define __NR_lgetxattr 9
+#endif
+
+#if !defined(__NR_fgetxattr)
+#define __NR_fgetxattr 10
+#endif
+
+#if !defined(__NR_listxattr)
+#define __NR_listxattr 11
+#endif
+
+#if !defined(__NR_llistxattr)
+#define __NR_llistxattr 12
+#endif
+
+#if !defined(__NR_flistxattr)
+#define __NR_flistxattr 13
+#endif
+
+#if !defined(__NR_removexattr)
+#define __NR_removexattr 14
+#endif
+
+#if !defined(__NR_lremovexattr)
+#define __NR_lremovexattr 15
+#endif
+
+#if !defined(__NR_fremovexattr)
+#define __NR_fremovexattr 16
+#endif
+
+#if !defined(__NR_getcwd)
+#define __NR_getcwd 17
+#endif
+
+#if !defined(__NR_lookup_dcookie)
+#define __NR_lookup_dcookie 18
+#endif
+
+#if !defined(__NR_eventfd2)
+#define __NR_eventfd2 19
+#endif
+
+#if !defined(__NR_epoll_create1)
+#define __NR_epoll_create1 20
+#endif
+
+#if !defined(__NR_epoll_ctl)
+#define __NR_epoll_ctl 21
+#endif
+
+#if !defined(__NR_epoll_pwait)
+#define __NR_epoll_pwait 22
+#endif
+
+#if !defined(__NR_dup)
+#define __NR_dup 23
+#endif
+
+#if !defined(__NR_dup3)
+#define __NR_dup3 24
+#endif
+
+#if !defined(__NR_fcntl)
+#define __NR_fcntl 25
+#endif
+
+#if !defined(__NR_inotify_init1)
+#define __NR_inotify_init1 26
+#endif
+
+#if !defined(__NR_inotify_add_watch)
+#define __NR_inotify_add_watch 27
+#endif
+
+#if !defined(__NR_inotify_rm_watch)
+#define __NR_inotify_rm_watch 28
+#endif
+
+#if !defined(__NR_ioctl)
+#define __NR_ioctl 29
+#endif
+
+#if !defined(__NR_ioprio_set)
+#define __NR_ioprio_set 30
+#endif
+
+#if !defined(__NR_ioprio_get)
+#define __NR_ioprio_get 31
+#endif
+
+#if !defined(__NR_flock)
+#define __NR_flock 32
+#endif
+
+#if !defined(__NR_mknodat)
+#define __NR_mknodat 33
+#endif
+
+#if !defined(__NR_mkdirat)
+#define __NR_mkdirat 34
+#endif
+
+#if !defined(__NR_unlinkat)
+#define __NR_unlinkat 35
+#endif
+
+#if !defined(__NR_symlinkat)
+#define __NR_symlinkat 36
+#endif
+
+#if !defined(__NR_linkat)
+#define __NR_linkat 37
+#endif
+
+#if !defined(__NR_renameat)
+#define __NR_renameat 38
+#endif
+
+#if !defined(__NR_umount2)
+#define __NR_umount2 39
+#endif
+
+#if !defined(__NR_mount)
+#define __NR_mount 40
+#endif
+
+#if !defined(__NR_pivot_root)
+#define __NR_pivot_root 41
+#endif
+
+#if !defined(__NR_nfsservctl)
+#define __NR_nfsservctl 42
+#endif
+
+#if !defined(__NR_statfs)
+#define __NR_statfs 43
+#endif
+
+#if !defined(__NR_fstatfs)
+#define __NR_fstatfs 44
+#endif
+
+#if !defined(__NR_truncate)
+#define __NR_truncate 45
+#endif
+
+#if !defined(__NR_ftruncate)
+#define __NR_ftruncate 46
+#endif
+
+#if !defined(__NR_fallocate)
+#define __NR_fallocate 47
+#endif
+
+#if !defined(__NR_faccessat)
+#define __NR_faccessat 48
+#endif
+
+#if !defined(__NR_chdir)
+#define __NR_chdir 49
+#endif
+
+#if !defined(__NR_fchdir)
+#define __NR_fchdir 50
+#endif
+
+#if !defined(__NR_chroot)
+#define __NR_chroot 51
+#endif
+
+#if !defined(__NR_fchmod)
+#define __NR_fchmod 52
+#endif
+
+#if !defined(__NR_fchmodat)
+#define __NR_fchmodat 53
+#endif
+
+#if !defined(__NR_fchownat)
+#define __NR_fchownat 54
+#endif
+
+#if !defined(__NR_fchown)
+#define __NR_fchown 55
+#endif
+
+#if !defined(__NR_openat)
+#define __NR_openat 56
+#endif
+
+#if !defined(__NR_close)
+#define __NR_close 57
+#endif
+
+#if !defined(__NR_vhangup)
+#define __NR_vhangup 58
+#endif
+
+#if !defined(__NR_pipe2)
+#define __NR_pipe2 59
+#endif
+
+#if !defined(__NR_quotactl)
+#define __NR_quotactl 60
+#endif
+
+#if !defined(__NR_getdents64)
+#define __NR_getdents64 61
+#endif
+
+#if !defined(__NR_lseek)
+#define __NR_lseek 62
+#endif
+
+#if !defined(__NR_read)
+#define __NR_read 63
+#endif
+
+#if !defined(__NR_write)
+#define __NR_write 64
+#endif
+
+#if !defined(__NR_readv)
+#define __NR_readv 65
+#endif
+
+#if !defined(__NR_writev)
+#define __NR_writev 66
+#endif
+
+#if !defined(__NR_pread64)
+#define __NR_pread64 67
+#endif
+
+#if !defined(__NR_pwrite64)
+#define __NR_pwrite64 68
+#endif
+
+#if !defined(__NR_preadv)
+#define __NR_preadv 69
+#endif
+
+#if !defined(__NR_pwritev)
+#define __NR_pwritev 70
+#endif
+
+#if !defined(__NR_sendfile)
+#define __NR_sendfile 71
+#endif
+
+#if !defined(__NR_pselect6)
+#define __NR_pselect6 72
+#endif
+
+#if !defined(__NR_ppoll)
+#define __NR_ppoll 73
+#endif
+
+#if !defined(__NR_signalfd4)
+#define __NR_signalfd4 74
+#endif
+
+#if !defined(__NR_vmsplice)
+#define __NR_vmsplice 75
+#endif
+
+#if !defined(__NR_splice)
+#define __NR_splice 76
+#endif
+
+#if !defined(__NR_tee)
+#define __NR_tee 77
+#endif
+
+#if !defined(__NR_readlinkat)
+#define __NR_readlinkat 78
+#endif
+
+#if !defined(__NR_newfstatat)
+#define __NR_newfstatat 79
+#endif
+
+#if !defined(__NR_fstat)
+#define __NR_fstat 80
+#endif
+
+#if !defined(__NR_sync)
+#define __NR_sync 81
+#endif
+
+#if !defined(__NR_fsync)
+#define __NR_fsync 82
+#endif
+
+#if !defined(__NR_fdatasync)
+#define __NR_fdatasync 83
+#endif
+
+#if !defined(__NR_sync_file_range)
+#define __NR_sync_file_range 84
+#endif
+
+#if !defined(__NR_timerfd_create)
+#define __NR_timerfd_create 85
+#endif
+
+#if !defined(__NR_timerfd_settime)
+#define __NR_timerfd_settime 86
+#endif
+
+#if !defined(__NR_timerfd_gettime)
+#define __NR_timerfd_gettime 87
+#endif
+
+#if !defined(__NR_utimensat)
+#define __NR_utimensat 88
+#endif
+
+#if !defined(__NR_acct)
+#define __NR_acct 89
+#endif
+
+#if !defined(__NR_capget)
+#define __NR_capget 90
+#endif
+
+#if !defined(__NR_capset)
+#define __NR_capset 91
+#endif
+
+#if !defined(__NR_personality)
+#define __NR_personality 92
+#endif
+
+#if !defined(__NR_exit)
+#define __NR_exit 93
+#endif
+
+#if !defined(__NR_exit_group)
+#define __NR_exit_group 94
+#endif
+
+#if !defined(__NR_waitid)
+#define __NR_waitid 95
+#endif
+
+#if !defined(__NR_set_tid_address)
+#define __NR_set_tid_address 96
+#endif
+
+#if !defined(__NR_unshare)
+#define __NR_unshare 97
+#endif
+
+#if !defined(__NR_futex)
+#define __NR_futex 98
+#endif
+
+#if !defined(__NR_set_robust_list)
+#define __NR_set_robust_list 99
+#endif
+
+#if !defined(__NR_get_robust_list)
+#define __NR_get_robust_list 100
+#endif
+
+#if !defined(__NR_nanosleep)
+#define __NR_nanosleep 101
+#endif
+
+#if !defined(__NR_getitimer)
+#define __NR_getitimer 102
+#endif
+
+#if !defined(__NR_setitimer)
+#define __NR_setitimer 103
+#endif
+
+#if !defined(__NR_kexec_load)
+#define __NR_kexec_load 104
+#endif
+
+#if !defined(__NR_init_module)
+#define __NR_init_module 105
+#endif
+
+#if !defined(__NR_delete_module)
+#define __NR_delete_module 106
+#endif
+
+#if !defined(__NR_timer_create)
+#define __NR_timer_create 107
+#endif
+
+#if !defined(__NR_timer_gettime)
+#define __NR_timer_gettime 108
+#endif
+
+#if !defined(__NR_timer_getoverrun)
+#define __NR_timer_getoverrun 109
+#endif
+
+#if !defined(__NR_timer_settime)
+#define __NR_timer_settime 110
+#endif
+
+#if !defined(__NR_timer_delete)
+#define __NR_timer_delete 111
+#endif
+
+#if !defined(__NR_clock_settime)
+#define __NR_clock_settime 112
+#endif
+
+#if !defined(__NR_clock_gettime)
+#define __NR_clock_gettime 113
+#endif
+
+#if !defined(__NR_clock_getres)
+#define __NR_clock_getres 114
+#endif
+
+#if !defined(__NR_clock_nanosleep)
+#define __NR_clock_nanosleep 115
+#endif
+
+#if !defined(__NR_syslog)
+#define __NR_syslog 116
+#endif
+
+#if !defined(__NR_ptrace)
+#define __NR_ptrace 117
+#endif
+
+#if !defined(__NR_sched_setparam)
+#define __NR_sched_setparam 118
+#endif
+
+#if !defined(__NR_sched_setscheduler)
+#define __NR_sched_setscheduler 119
+#endif
+
+#if !defined(__NR_sched_getscheduler)
+#define __NR_sched_getscheduler 120
+#endif
+
+#if !defined(__NR_sched_getparam)
+#define __NR_sched_getparam 121
+#endif
+
+#if !defined(__NR_sched_setaffinity)
+#define __NR_sched_setaffinity 122
+#endif
+
+#if !defined(__NR_sched_getaffinity)
+#define __NR_sched_getaffinity 123
+#endif
+
+#if !defined(__NR_sched_yield)
+#define __NR_sched_yield 124
+#endif
+
+#if !defined(__NR_sched_get_priority_max)
+#define __NR_sched_get_priority_max 125
+#endif
+
+#if !defined(__NR_sched_get_priority_min)
+#define __NR_sched_get_priority_min 126
+#endif
+
+#if !defined(__NR_sched_rr_get_interval)
+#define __NR_sched_rr_get_interval 127
+#endif
+
+#if !defined(__NR_restart_syscall)
+#define __NR_restart_syscall 128
+#endif
+
+#if !defined(__NR_kill)
+#define __NR_kill 129
+#endif
+
+#if !defined(__NR_tkill)
+#define __NR_tkill 130
+#endif
+
+#if !defined(__NR_tgkill)
+#define __NR_tgkill 131
+#endif
+
+#if !defined(__NR_sigaltstack)
+#define __NR_sigaltstack 132
+#endif
+
+#if !defined(__NR_rt_sigsuspend)
+#define __NR_rt_sigsuspend 133
+#endif
+
+#if !defined(__NR_rt_sigaction)
+#define __NR_rt_sigaction 134
+#endif
+
+#if !defined(__NR_rt_sigprocmask)
+#define __NR_rt_sigprocmask 135
+#endif
+
+#if !defined(__NR_rt_sigpending)
+#define __NR_rt_sigpending 136
+#endif
+
+#if !defined(__NR_rt_sigtimedwait)
+#define __NR_rt_sigtimedwait 137
+#endif
+
+#if !defined(__NR_rt_sigqueueinfo)
+#define __NR_rt_sigqueueinfo 138
+#endif
+
+#if !defined(__NR_rt_sigreturn)
+#define __NR_rt_sigreturn 139
+#endif
+
+#if !defined(__NR_setpriority)
+#define __NR_setpriority 140
+#endif
+
+#if !defined(__NR_getpriority)
+#define __NR_getpriority 141
+#endif
+
+#if !defined(__NR_reboot)
+#define __NR_reboot 142
+#endif
+
+#if !defined(__NR_setregid)
+#define __NR_setregid 143
+#endif
+
+#if !defined(__NR_setgid)
+#define __NR_setgid 144
+#endif
+
+#if !defined(__NR_setreuid)
+#define __NR_setreuid 145
+#endif
+
+#if !defined(__NR_setuid)
+#define __NR_setuid 146
+#endif
+
+#if !defined(__NR_setresuid)
+#define __NR_setresuid 147
+#endif
+
+#if !defined(__NR_getresuid)
+#define __NR_getresuid 148
+#endif
+
+#if !defined(__NR_setresgid)
+#define __NR_setresgid 149
+#endif
+
+#if !defined(__NR_getresgid)
+#define __NR_getresgid 150
+#endif
+
+#if !defined(__NR_setfsuid)
+#define __NR_setfsuid 151
+#endif
+
+#if !defined(__NR_setfsgid)
+#define __NR_setfsgid 152
+#endif
+
+#if !defined(__NR_times)
+#define __NR_times 153
+#endif
+
+#if !defined(__NR_setpgid)
+#define __NR_setpgid 154
+#endif
+
+#if !defined(__NR_getpgid)
+#define __NR_getpgid 155
+#endif
+
+#if !defined(__NR_getsid)
+#define __NR_getsid 156
+#endif
+
+#if !defined(__NR_setsid)
+#define __NR_setsid 157
+#endif
+
+#if !defined(__NR_getgroups)
+#define __NR_getgroups 158
+#endif
+
+#if !defined(__NR_setgroups)
+#define __NR_setgroups 159
+#endif
+
+#if !defined(__NR_uname)
+#define __NR_uname 160
+#endif
+
+#if !defined(__NR_sethostname)
+#define __NR_sethostname 161
+#endif
+
+#if !defined(__NR_setdomainname)
+#define __NR_setdomainname 162
+#endif
+
+#if !defined(__NR_getrlimit)
+#define __NR_getrlimit 163
+#endif
+
+#if !defined(__NR_setrlimit)
+#define __NR_setrlimit 164
+#endif
+
+#if !defined(__NR_getrusage)
+#define __NR_getrusage 165
+#endif
+
+#if !defined(__NR_umask)
+#define __NR_umask 166
+#endif
+
+#if !defined(__NR_prctl)
+#define __NR_prctl 167
+#endif
+
+#if !defined(__NR_getcpu)
+#define __NR_getcpu 168
+#endif
+
+#if !defined(__NR_gettimeofday)
+#define __NR_gettimeofday 169
+#endif
+
+#if !defined(__NR_settimeofday)
+#define __NR_settimeofday 170
+#endif
+
+#if !defined(__NR_adjtimex)
+#define __NR_adjtimex 171
+#endif
+
+#if !defined(__NR_getpid)
+#define __NR_getpid 172
+#endif
+
+#if !defined(__NR_getppid)
+#define __NR_getppid 173
+#endif
+
+#if !defined(__NR_getuid)
+#define __NR_getuid 174
+#endif
+
+#if !defined(__NR_geteuid)
+#define __NR_geteuid 175
+#endif
+
+#if !defined(__NR_getgid)
+#define __NR_getgid 176
+#endif
+
+#if !defined(__NR_getegid)
+#define __NR_getegid 177
+#endif
+
+#if !defined(__NR_gettid)
+#define __NR_gettid 178
+#endif
+
+#if !defined(__NR_sysinfo)
+#define __NR_sysinfo 179
+#endif
+
+#if !defined(__NR_mq_open)
+#define __NR_mq_open 180
+#endif
+
+#if !defined(__NR_mq_unlink)
+#define __NR_mq_unlink 181
+#endif
+
+#if !defined(__NR_mq_timedsend)
+#define __NR_mq_timedsend 182
+#endif
+
+#if !defined(__NR_mq_timedreceive)
+#define __NR_mq_timedreceive 183
+#endif
+
+#if !defined(__NR_mq_notify)
+#define __NR_mq_notify 184
+#endif
+
+#if !defined(__NR_mq_getsetattr)
+#define __NR_mq_getsetattr 185
+#endif
+
+#if !defined(__NR_msgget)
+#define __NR_msgget 186
+#endif
+
+#if !defined(__NR_msgctl)
+#define __NR_msgctl 187
+#endif
+
+#if !defined(__NR_msgrcv)
+#define __NR_msgrcv 188
+#endif
+
+#if !defined(__NR_msgsnd)
+#define __NR_msgsnd 189
+#endif
+
+#if !defined(__NR_semget)
+#define __NR_semget 190
+#endif
+
+#if !defined(__NR_semctl)
+#define __NR_semctl 191
+#endif
+
+#if !defined(__NR_semtimedop)
+#define __NR_semtimedop 192
+#endif
+
+#if !defined(__NR_semop)
+#define __NR_semop 193
+#endif
+
+#if !defined(__NR_shmget)
+#define __NR_shmget 194
+#endif
+
+#if !defined(__NR_shmctl)
+#define __NR_shmctl 195
+#endif
+
+#if !defined(__NR_shmat)
+#define __NR_shmat 196
+#endif
+
+#if !defined(__NR_shmdt)
+#define __NR_shmdt 197
+#endif
+
+#if !defined(__NR_socket)
+#define __NR_socket 198
+#endif
+
+#if !defined(__NR_socketpair)
+#define __NR_socketpair 199
+#endif
+
+#if !defined(__NR_bind)
+#define __NR_bind 200
+#endif
+
+#if !defined(__NR_listen)
+#define __NR_listen 201
+#endif
+
+#if !defined(__NR_accept)
+#define __NR_accept 202
+#endif
+
+#if !defined(__NR_connect)
+#define __NR_connect 203
+#endif
+
+#if !defined(__NR_getsockname)
+#define __NR_getsockname 204
+#endif
+
+#if !defined(__NR_getpeername)
+#define __NR_getpeername 205
+#endif
+
+#if !defined(__NR_sendto)
+#define __NR_sendto 206
+#endif
+
+#if !defined(__NR_recvfrom)
+#define __NR_recvfrom 207
+#endif
+
+#if !defined(__NR_setsockopt)
+#define __NR_setsockopt 208
+#endif
+
+#if !defined(__NR_getsockopt)
+#define __NR_getsockopt 209
+#endif
+
+#if !defined(__NR_shutdown)
+#define __NR_shutdown 210
+#endif
+
+#if !defined(__NR_sendmsg)
+#define __NR_sendmsg 211
+#endif
+
+#if !defined(__NR_recvmsg)
+#define __NR_recvmsg 212
+#endif
+
+#if !defined(__NR_readahead)
+#define __NR_readahead 213
+#endif
+
+#if !defined(__NR_brk)
+#define __NR_brk 214
+#endif
+
+#if !defined(__NR_munmap)
+#define __NR_munmap 215
+#endif
+
+#if !defined(__NR_mremap)
+#define __NR_mremap 216
+#endif
+
+#if !defined(__NR_add_key)
+#define __NR_add_key 217
+#endif
+
+#if !defined(__NR_request_key)
+#define __NR_request_key 218
+#endif
+
+#if !defined(__NR_keyctl)
+#define __NR_keyctl 219
+#endif
+
+#if !defined(__NR_clone)
+#define __NR_clone 220
+#endif
+
+#if !defined(__NR_execve)
+#define __NR_execve 221
+#endif
+
+#if !defined(__NR_mmap)
+#define __NR_mmap 222
+#endif
+
+#if !defined(__NR_fadvise64)
+#define __NR_fadvise64 223
+#endif
+
+#if !defined(__NR_swapon)
+#define __NR_swapon 224
+#endif
+
+#if !defined(__NR_swapoff)
+#define __NR_swapoff 225
+#endif
+
+#if !defined(__NR_mprotect)
+#define __NR_mprotect 226
+#endif
+
+#if !defined(__NR_msync)
+#define __NR_msync 227
+#endif
+
+#if !defined(__NR_mlock)
+#define __NR_mlock 228
+#endif
+
+#if !defined(__NR_munlock)
+#define __NR_munlock 229
+#endif
+
+#if !defined(__NR_mlockall)
+#define __NR_mlockall 230
+#endif
+
+#if !defined(__NR_munlockall)
+#define __NR_munlockall 231
+#endif
+
+#if !defined(__NR_mincore)
+#define __NR_mincore 232
+#endif
+
+#if !defined(__NR_madvise)
+#define __NR_madvise 233
+#endif
+
+#if !defined(__NR_remap_file_pages)
+#define __NR_remap_file_pages 234
+#endif
+
+#if !defined(__NR_mbind)
+#define __NR_mbind 235
+#endif
+
+#if !defined(__NR_get_mempolicy)
+#define __NR_get_mempolicy 236
+#endif
+
+#if !defined(__NR_set_mempolicy)
+#define __NR_set_mempolicy 237
+#endif
+
+#if !defined(__NR_migrate_pages)
+#define __NR_migrate_pages 238
+#endif
+
+#if !defined(__NR_move_pages)
+#define __NR_move_pages 239
+#endif
+
+#if !defined(__NR_rt_tgsigqueueinfo)
+#define __NR_rt_tgsigqueueinfo 240
+#endif
+
+#if !defined(__NR_perf_event_open)
+#define __NR_perf_event_open 241
+#endif
+
+#if !defined(__NR_accept4)
+#define __NR_accept4 242
+#endif
+
+#if !defined(__NR_recvmmsg)
+#define __NR_recvmmsg 243
+#endif
+
+#if !defined(__NR_wait4)
+#define __NR_wait4 260
+#endif
+
+#if !defined(__NR_prlimit64)
+#define __NR_prlimit64 261
+#endif
+
+#if !defined(__NR_fanotify_init)
+#define __NR_fanotify_init 262
+#endif
+
+#if !defined(__NR_fanotify_mark)
+#define __NR_fanotify_mark 263
+#endif
+
+#if !defined(__NR_name_to_handle_at)
+#define __NR_name_to_handle_at 264
+#endif
+
+#if !defined(__NR_open_by_handle_at)
+#define __NR_open_by_handle_at 265
+#endif
+
+#if !defined(__NR_clock_adjtime)
+#define __NR_clock_adjtime 266
+#endif
+
+#if !defined(__NR_syncfs)
+#define __NR_syncfs 267
+#endif
+
+#if !defined(__NR_setns)
+#define __NR_setns 268
+#endif
+
+#if !defined(__NR_sendmmsg)
+#define __NR_sendmmsg 269
+#endif
+
+#if !defined(__NR_process_vm_readv)
+#define __NR_process_vm_readv 270
+#endif
+
+#if !defined(__NR_process_vm_writev)
+#define __NR_process_vm_writev 271
+#endif
+
+#if !defined(__NR_kcmp)
+#define __NR_kcmp 272
+#endif
+
+#if !defined(__NR_finit_module)
+#define __NR_finit_module 273
+#endif
+
+#if !defined(__NR_sched_setattr)
+#define __NR_sched_setattr 274
+#endif
+
+#if !defined(__NR_sched_getattr)
+#define __NR_sched_getattr 275
+#endif
+
+#if !defined(__NR_renameat2)
+#define __NR_renameat2 276
+#endif
+
+#if !defined(__NR_seccomp)
+#define __NR_seccomp 277
+#endif
+
+#if !defined(__NR_getrandom)
+#define __NR_getrandom 278
+#endif
+
+#if !defined(__NR_memfd_create)
+#define __NR_memfd_create 279
+#endif
+
+#endif  // SANDBOX_LINUX_SYSTEM_HEADERS_RISCV64_LINUX_SYSCALLS_H_
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/services/service_manager/sandbox/linux/bpf_cros_amd_gpu_policy_linux.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/services/service_manager/sandbox/linux/bpf_cros_amd_gpu_policy_linux.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/services/service_manager/sandbox/linux/bpf_cros_amd_gpu_policy_linux.cc
@@ -35,7 +35,7 @@ ResultExpr CrosAmdGpuProcessPolicy::Eval
     case __NR_sched_setscheduler:
     case __NR_sysinfo:
     case __NR_uname:
-#if !defined(__aarch64__)
+#if !defined(__aarch64__) && !defined(__riscv)
     case __NR_getdents:
     case __NR_readlink:
     case __NR_stat:
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/services/service_manager/sandbox/linux/sandbox_seccomp_bpf_linux.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/services/service_manager/sandbox/linux/sandbox_seccomp_bpf_linux.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/services/service_manager/sandbox/linux/sandbox_seccomp_bpf_linux.cc
@@ -63,7 +63,7 @@ using sandbox::bpf_dsl::ResultExpr;
 
 // Make sure that seccomp-bpf does not get disabled by mistake. Also make sure
 // that we think twice about this when adding a new architecture.
-#if !defined(ARCH_CPU_ARM64) && !defined(ARCH_CPU_MIPS64EL)
+#if !defined(ARCH_CPU_ARM64) && !defined(ARCH_CPU_MIPS64EL) && !defined(ARCH_CPU_RISCV64)
 #error "Seccomp-bpf disabled on supported architecture!"
 #endif  // !defined(ARCH_CPU_ARM64) && !defined(ARCH_CPU_MIPS64EL)
 
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/skia/BUILD.gn
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/skia/BUILD.gn
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/skia/BUILD.gn
@@ -797,6 +797,8 @@ skia_source_set("skia_opts") {
     sources = skia_opts.none_sources
   } else if (current_cpu == "s390x") {
     sources = skia_opts.none_sources
+  } else if (current_cpu == "riscv64") {
+    sources = skia_opts.none_sources
   } else {
     assert(false, "Need to port cpu specific stuff from skia_library_opts.gyp")
   }
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/angle/gni/angle.gni
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/third_party/angle/gni/angle.gni
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/angle/gni/angle.gni
@@ -51,7 +51,7 @@ angle_data_dir = "angledata"
 declare_args() {
   if (current_cpu == "arm64" || current_cpu == "x64" ||
       current_cpu == "mips64el" || current_cpu == "s390x" ||
-      current_cpu == "ppc64") {
+      current_cpu == "ppc64" || current_cpu == "riscv64") {
     angle_64bit_current_cpu = true
   } else if (current_cpu == "arm" || current_cpu == "x86" ||
              current_cpu == "mipsel" || current_cpu == "s390" ||
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/angle/include/platform/Platform.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/third_party/angle/include/platform/Platform.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/angle/include/platform/Platform.h
@@ -9,6 +9,7 @@
 #ifndef ANGLE_PLATFORM_H
 #define ANGLE_PLATFORM_H
 
+#include <stddef.h>
 #include <stdint.h>
 #include <array>
 
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/boringssl/src/include/openssl/base.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/third_party/boringssl/src/include/openssl/base.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/boringssl/src/include/openssl/base.h
@@ -114,6 +114,8 @@ extern "C" {
 #define OPENSSL_32_BIT
 #elif defined(__myriad2__)
 #define OPENSSL_32_BIT
+#elif defined(__riscv) && __riscv_xlen == 64
+#define OPENSSL_64_BIT
 #else
 // Note BoringSSL only supports standard 32-bit and 64-bit two's-complement,
 // little-endian architectures. Functions will not produce the correct answer
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/lss/linux_syscall_support.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/third_party/lss/linux_syscall_support.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/lss/linux_syscall_support.h
@@ -88,7 +88,7 @@
  */
 #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) ||   \
      defined(__mips__) || defined(__PPC__) || defined(__ARM_EABI__) || \
-     defined(__aarch64__) || defined(__s390__)) \
+     defined(__aarch64__) || defined(__s390__) || defined(__riscv)) \
   && (defined(__linux) || defined(__ANDROID__))
 
 #ifndef SYS_CPLUSPLUS
@@ -294,7 +294,7 @@ struct kernel_old_sigaction {
 } __attribute__((packed,aligned(4)));
 #elif (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
   #define kernel_old_sigaction kernel_sigaction
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) || defined(__riscv)
   // No kernel_old_sigaction defined for arm64.
 #endif
 
@@ -512,7 +512,7 @@ struct kernel_stat {
   int                st_blocks;
   int                st_pad4[14];
 };
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) || defined(__riscv)
 struct kernel_stat {
   unsigned long      st_dev;
   unsigned long      st_ino;
@@ -1052,7 +1052,7 @@ struct kernel_statfs {
 #define __NR_getcpu             (__NR_SYSCALL_BASE + 345)
 #endif
 /* End of ARM 3/EABI definitions                                             */
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) || defined(__riscv)
 #ifndef __NR_setxattr
 #define __NR_setxattr             5
 #endif
@@ -1855,7 +1855,7 @@ struct kernel_statfs {
 
   #undef  LSS_RETURN
   #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) \
-       || defined(__ARM_EABI__) || defined(__aarch64__) || defined(__s390__))
+       || defined(__ARM_EABI__) || defined(__aarch64__) || defined(__s390__) || defined(__riscv))
   /* Failing system calls return a negative result in the range of
    * -1..-4095. These are "errno" values with the sign inverted.
    */
@@ -3348,6 +3348,121 @@ struct kernel_statfs {
       }
       LSS_RETURN(int, __ret);
     }
+  #elif defined(__riscv)
+    #undef LSS_REG
+    #define LSS_REG(r,a) register int64_t __r##r __asm__("a"#r) = (int64_t)a
+    #undef  LSS_BODY
+    #define LSS_BODY(type,name,args...)                                       \
+          register int64_t __res_a0 __asm__("a0");                           \
+          register int64_t __a7 __asm__("a7") = __NR_##name;                 \
+	  int64_t __res;                                                      \
+          __asm__ __volatile__ ("scall\n"                                     \
+                                : "=r"(__res_a0)                              \
+                                : "r"(__a7) , ## args                         \
+                                : "memory");                                  \
+          __res = __res_a0;                                                   \
+          LSS_RETURN(type, __res)
+    #undef _syscall0
+    #define _syscall0(type, name)                                             \
+      type LSS_NAME(name)(void) {                                             \
+        LSS_BODY(type, name);                                                 \
+      }
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1)                                \
+      type LSS_NAME(name)(type1 arg1) {                                       \
+        LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0));                    \
+      }
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2)                   \
+      type LSS_NAME(name)(type1 arg1, type2 arg2) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1));                           \
+      }
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3)      \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {               \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2));                \
+      }
+    #undef _syscall4
+    #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {   \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4);                                                     \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3));     \
+      }
+    #undef _syscall5
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4));                                      \
+      }
+    #undef _syscall6
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5, type6 arg6) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4), "r"(__r5));                           \
+      }
+
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      int64_t __res;
+      {
+        register uint64_t __flags __asm__("a0") = flags;
+        register void *__stack __asm__("a1") = child_stack;
+        register void *__ptid  __asm__("a2") = parent_tidptr;
+        register void *__tls   __asm__("a3") = newtls;
+        register int  *__ctid  __asm__("a4") = child_tidptr;
+        __asm__ __volatile__(/* Push "arg" and "fn" onto the stack that will be
+                              * used by the child.
+                              */
+                             "addi    %2,%2,-16\n"
+			     "sd      %1, 0(%2)\n"
+			     "sd      %4, 8(%2)\n"
+
+                             /* %x0 = syscall(%x0 = flags,
+                              *               %x1 = child_stack,
+                              *               %x2 = parent_tidptr,
+                              *               %x3 = newtls,
+                              *               %x4 = child_tidptr)
+                              */
+                             "li      a7, %8\n"
+                             "scall\n"
+
+                             /* if (%r0 != 0)
+                              *   return %r0;
+                              */
+                             "mov     %0, a0\n"
+                             "bnez    a0, 1f\n"
+
+                             /* In the child, now. Call "fn(arg)".
+                              */
+                             "ld      a1, 0(sp)\n"
+                             "ld      a0, 8(sp)\n"
+                             "jalr    a1\n"
+
+                             /* Call _exit(%r0).
+                              */
+                             "li      a7, %9\n"
+                             "scall\n"
+                           "1:\n"
+                             : "=r" (__res)
+                             : "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
+                               "r"(__ptid), "r"(__tls), "r"(__ctid),
+                               "i"(__NR_clone), "i"(__NR_exit)
+                             : "cc", "a0", "memory");
+      }
+      LSS_RETURN(int, __res);
+    }
   #endif
   #define __NR__exit   __NR_exit
   #define __NR__gettid __NR_gettid
@@ -4470,7 +4585,7 @@ struct kernel_statfs {
 // TODO: define this in an arch-independant way instead of inlining the clone
 //       syscall body.
 
-# if defined(__aarch64__)
+# if defined(__aarch64__) || defined(__riscv)
   LSS_INLINE pid_t LSS_NAME(fork)(void) {
     // No fork syscall on aarch64 - implement by means of the clone syscall.
     // Note that this does not reset glibc's cached view of the PID/TID, so
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/swiftshader/third_party/llvm-7.0/BUILD.gn
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/third_party/swiftshader/third_party/llvm-7.0/BUILD.gn
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/swiftshader/third_party/llvm-7.0/BUILD.gn
@@ -335,6 +335,7 @@ swiftshader_source_set("swiftshader_llvm
     deps += [":swiftshader_llvm_mips"]
   } else if (target_cpu == "ppc64") {
     deps += [":swiftshader_llvm_ppc"]
+  } else if (target_cpu == "riscv64") {
   } else {
     assert(false, "Unsupported target_cpu")
   }
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/webrtc/rtc_base/system/arch.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/chromium/third_party/webrtc/rtc_base/system/arch.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/chromium/third_party/webrtc/rtc_base/system/arch.h
@@ -50,6 +50,10 @@
 #elif defined(__EMSCRIPTEN__)
 #define WEBRTC_ARCH_32_BITS
 #define WEBRTC_ARCH_LITTLE_ENDIAN
+#elif defined(__riscv) && __riscv_xlen == 64
+#define WEBRTC_ARCH_RISCV_FAMILY
+#define WEBRTC_ARCH_64_BITS
+#define WEBRTC_ARCH_LITTLE_ENDIAN
 #else
 #error Please add support for your architecture in rtc_base/system/arch.h
 #endif
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/gn/tools/gn/args.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/gn/tools/gn/args.cc
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/gn/tools/gn/args.cc
@@ -329,6 +329,7 @@ void Args::SetSystemVarsLocked(Scope* de
   static const char kMips64[] = "mips64el";
   static const char kS390X[] = "s390x";
   static const char kPPC64[] = "ppc64";
+  static const char kRiscv64[] = "riscv64";
   const char* arch = nullptr;
 
   // Set the host CPU architecture based on the underlying OS, not
@@ -353,6 +354,8 @@ void Args::SetSystemVarsLocked(Scope* de
     // This allows us to use the same toolchain as ppc64 BE
     // and specific flags are included using the host_byteorder logic.
     arch = kPPC64;
+  else if (os_arch == "riscv64")
+    arch = kRiscv64;
   else
     CHECK(false) << "OS architecture not handled. (" << os_arch << ")";
 
Index: qtwebengine-everywhere-src-5.15.0/src/3rdparty/gn/util/build_config.h
===================================================================
--- qtwebengine-everywhere-src-5.15.0.orig/src/3rdparty/gn/util/build_config.h
+++ qtwebengine-everywhere-src-5.15.0/src/3rdparty/gn/util/build_config.h
@@ -172,6 +172,16 @@
 #define ARCH_CPU_32_BITS 1
 #define ARCH_CPU_BIG_ENDIAN 1
 #endif
+#elif defined(__riscv)
+#define ARCH_CPU_RISCV_FAMILY 1
+#if __riscv_xlen == 64
+#define ARCH_CPU_RISCV64 1
+#define ARCH_CPU_64_BITS 1
+#else
+#define ARCH_CPU_RISCV32 1
+#define ARCH_CPU_32_BITS 1
+#endif
+#define ARCH_CPU_LITTLE_ENDIAN 1
 #else
 #error Please add support for your architecture in build_config.h
 #endif

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File riscv.patch of Package libqt5-qtwebengine (Revision 5e53e24d5ac409e5309540f305fce9fd)

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