File riscv.patch of Package libqt5-qtwebengine

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File riscv.patch of Package libqt5-qtwebengine (Revision 24509bf3ee942603e05f1c123dd14b3e)

Currently displaying revision 24509bf3ee942603e05f1c123dd14b3e , Show latest

Index: qtwebengine-everywhere-src-5.15.11/configure.pri
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/configure.pri
+++ qtwebengine-everywhere-src-5.15.11/configure.pri
@@ -131,6 +131,7 @@ defineTest(qtConfTest_detectArch) {
     contains(QT_ARCH, "arm")|contains(QT_ARCH, "arm64"): return(true)
     contains(QT_ARCH, "mips"): return(true)
     contains(QT_ARCH, "mips64"): return(true)
+    contains(QT_ARCH, "riscv64"): return(true)
     qtLog("Architecture not supported.")
     return(false)
 }
Index: qtwebengine-everywhere-src-5.15.11/mkspecs/features/functions.prf
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/mkspecs/features/functions.prf
+++ qtwebengine-everywhere-src-5.15.11/mkspecs/features/functions.prf
@@ -112,6 +112,7 @@ defineReplace(gnArch) {
     contains(qtArch, "mips"): return(mipsel)
     contains(qtArch, "mips64"): return(mips64el)
     contains(qtArch, "mips64el"): return(mips64el)
+    contains(qtArch, "riscv64"): return(riscv64)
     return(unknown)
 }
 
Index: qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/base/process/launch_posix.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/base/process/launch_posix.cc
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/base/process/launch_posix.cc
@@ -704,7 +704,7 @@ 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-5.15.11/src/3rdparty/chromium/build/build_config.h
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/build/build_config.h
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/build/build_config.h
@@ -193,6 +193,11 @@
 #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-5.15.11/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/build/toolchain/linux/BUILD.gn
@@ -290,3 +290,20 @@ 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-5.15.11/src/3rdparty/chromium/skia/BUILD.gn
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/skia/BUILD.gn
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/skia/BUILD.gn
@@ -821,6 +821,8 @@ 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-5.15.11/src/3rdparty/chromium/third_party/angle/gni/angle.gni
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/third_party/angle/gni/angle.gni
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/angle/gni/angle.gni
@@ -54,7 +54,7 @@ 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-5.15.11/src/3rdparty/chromium/third_party/angle/include/platform/PlatformMethods.h
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/third_party/angle/include/platform/PlatformMethods.h
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/angle/include/platform/PlatformMethods.h
@@ -9,6 +9,7 @@
 #ifndef ANGLE_PLATFORMMETHODS_H
 #define ANGLE_PLATFORMMETHODS_H
 
+#include <stddef.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <array>
Index: qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/blink/renderer/platform/heap/asm/BUILD.gn
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/third_party/blink/renderer/platform/heap/asm/BUILD.gn
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/blink/renderer/platform/heap/asm/BUILD.gn
@@ -38,6 +38,8 @@ if (current_cpu == "x86" || current_cpu
       sources = [ "SaveRegisters_mips64.S" ]
     } else if (current_cpu == "ppc64") {
       sources = [ "SaveRegisters_ppc64.S" ]
+    } else if (current_cpu == "riscv64") {
+      sources = [ "SaveRegisters_riscv64.S" ]
     }
 
     if (current_cpu == "arm") {
Index: qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/blink/renderer/platform/heap/asm/SaveRegisters_riscv64.S
===================================================================
--- /dev/null
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/blink/renderer/platform/heap/asm/SaveRegisters_riscv64.S
@@ -0,0 +1,45 @@
+/*
+ * typedef void (*PushAllRegistersCallback)(ThreadState*, intptr_t*);
+ * extern "C" void PushAllRegisters(ThreadState*, PushAllRegistersCallback)
+ */
+
+.type PushAllRegisters, %function
+.global PushAllRegisters
+.hidden PushAllRegisters
+PushAllRegisters:
+        /* Push all callee-saves registers to get them
+         * on the stack for conservative stack scanning.
+         * Reserve space for callee-saved registers and return address.
+         */
+        addi sp,sp,-112
+        /* Save the callee-saved registers and the return address. */
+        sd ra,0(sp)
+        sd s0,8(sp)
+        sd s1,16(sp)
+        sd s2,24(sp)
+        sd s3,32(sp)
+        sd s4,40(sp)
+        sd s5,48(sp)
+        sd s6,56(sp)
+        sd s7,64(sp)
+        sd s8,72(sp)
+        sd s9,80(sp)
+        sd s10,88(sp)
+        sd s11,96(sp)
+        /* Note: the callee-saved floating point registers do not need to be
+         * copied to the stack, because fp registers never hold heap pointers
+         * and so do not need to be kept visible to the garbage collector.
+         * Pass the first argument untouched in a0 and the
+         * stack pointer to the callback.
+         */
+        mv ra,a1
+        mv a1,sp
+        jalr ra
+        /* Restore return address, adjust stack and return.
+         * Note: the copied registers do not need to be reloaded here,
+         * because they were preserved by the called routine.
+         */
+        ld ra,0(sp)
+        addi sp,sp,112
+        ret
+.size PushAllRegisters, . - PushAllRegisters
Index: qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/boringssl/src/include/openssl/base.h
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/third_party/boringssl/src/include/openssl/base.h
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/boringssl/src/include/openssl/base.h
@@ -105,6 +105,8 @@ extern "C" {
 #elif defined(__mips__) && defined(__LP64__)
 #define OPENSSL_64_BIT
 #define OPENSSL_MIPS64
+#elif defined(__riscv) && __SIZEOF_POINTER__ == 8
+#define OPENSSL_64_BIT
 #elif defined(__pnacl__)
 #define OPENSSL_32_BIT
 #define OPENSSL_PNACL
Index: qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/dav1d/config/linux/riscv64/config.h
===================================================================
--- /dev/null
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/dav1d/config/linux/riscv64/config.h
@@ -0,0 +1,38 @@
+/*
+ * Autogenerated by the Meson build system.
+ * Do not edit, your changes will be lost.
+ */
+
+#pragma once
+
+#define ARCH_AARCH64 0
+
+#define ARCH_ARM 0
+
+#define ARCH_PPC64LE 0
+
+#define ARCH_X86 0
+
+#define ARCH_X86_32 0
+
+#define ARCH_X86_64 0
+
+#define CONFIG_16BPC 1
+
+#define CONFIG_8BPC 1
+
+// #define CONFIG_LOG 1 -- Logging is controlled by Chromium
+
+#define ENDIANNESS_BIG 0
+
+#define HAVE_ASM 0
+
+#define HAVE_AS_FUNC 0
+
+#define HAVE_CLOCK_GETTIME 1
+
+#define HAVE_GETAUXVAL 1
+
+#define HAVE_POSIX_MEMALIGN 1
+
+#define HAVE_UNISTD_H 1
Index: qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/lss/linux_syscall_support.h
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/third_party/lss/linux_syscall_support.h
+++ qtwebengine-everywhere-src-5.15.11/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
@@ -301,7 +301,7 @@ 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
 
@@ -341,7 +341,9 @@ struct kernel_sigaction {
     void             (*sa_sigaction_)(int, siginfo_t *, void *);
   };
   unsigned long      sa_flags;
+#ifndef __riscv
   void               (*sa_restorer)(void);
+#endif
   struct kernel_sigset_t sa_mask;
 #endif
 };
@@ -519,7 +521,7 @@ 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;
@@ -1065,7 +1067,7 @@ struct kernel_statfs {
 #define __NR_getrandom          (__NR_SYSCALL_BASE + 384)
 #endif
 /* End of ARM 3/EABI definitions                                             */
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) || defined(__riscv)
 #ifndef __NR_setxattr
 #define __NR_setxattr             5
 #endif
@@ -1880,7 +1882,7 @@ 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.
    */
@@ -3373,6 +3375,122 @@ 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 int64_t __res_a0 __asm__("a0");
+        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"
+
+                             /* %a0 = syscall(%a0 = flags,
+                              *               %a1 = child_stack,
+                              *               %a2 = parent_tidptr,
+                              *               %a3 = newtls,
+                              *               %a4 = child_tidptr)
+                              */
+                             "li      a7, %8\n"
+                             "scall\n"
+
+                             /* if (%a0 != 0)
+                              *   return %a0;
+                              */
+                             "bnez    %0, 1f\n"
+
+                             /* In the child, now. Call "fn(arg)".
+                              */
+                             "ld      a1, 0(sp)\n"
+                             "ld      a0, 8(sp)\n"
+                             "jalr    a1\n"
+
+                             /* Call _exit(%a0).
+                              */
+                             "li      a7, %9\n"
+                             "scall\n"
+                           "1:\n"
+                             : "=r" (__res_a0)
+                             : "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
+                               "r"(__ptid), "r"(__tls), "r"(__ctid),
+                               "i"(__NR_clone), "i"(__NR_exit)
+                             : "cc", "memory");
+        __res = __res_a0;
+      }
+      LSS_RETURN(int, __res);
+    }
   #endif
   #define __NR__exit   __NR_exit
   #define __NR__gettid __NR_gettid
@@ -4181,7 +4299,7 @@ struct kernel_statfs {
       LSS_SC_BODY(4, int, 8, d, type, protocol, sv);
     }
   #endif
-  #if defined(__ARM_EABI__) || defined (__aarch64__)
+  #if defined(__ARM_EABI__) || defined (__aarch64__) || defined(__riscv)
     LSS_INLINE _syscall3(ssize_t, recvmsg, int, s, struct kernel_msghdr*, msg,
                          int, flags)
     LSS_INLINE _syscall3(ssize_t, sendmsg, int, s, const struct kernel_msghdr*,
@@ -4503,7 +4621,7 @@ 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-5.15.11/src/3rdparty/chromium/third_party/swiftshader/third_party/llvm-10.0/BUILD.gn
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/third_party/swiftshader/third_party/llvm-10.0/BUILD.gn
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/swiftshader/third_party/llvm-10.0/BUILD.gn
@@ -149,6 +149,7 @@ swiftshader_llvm_source_set("swiftshader
     deps += [ ":swiftshader_llvm_ppc" ]
   } else if (current_cpu == "x86" || current_cpu == "x64") {
     deps += [ ":swiftshader_llvm_x86" ]
+  } else if (current_cpu == "riscv64") {
   } else {
     assert(false, "Unsupported current_cpu")
   }
Index: qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/webrtc/modules/desktop_capture/differ_block.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/third_party/webrtc/modules/desktop_capture/differ_block.cc
+++ qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/webrtc/modules/desktop_capture/differ_block.cc
@@ -30,7 +30,7 @@ bool VectorDifference(const uint8_t* ima
   static bool (*diff_proc)(const uint8_t*, const uint8_t*) = nullptr;
 
   if (!diff_proc) {
-#if defined(WEBRTC_ARCH_ARM_FAMILY) || defined(WEBRTC_ARCH_MIPS_FAMILY)
+#if defined(WEBRTC_ARCH_ARM_FAMILY) || defined(WEBRTC_ARCH_MIPS_FAMILY) || defined(WEBRTC_ARCH_RISCV_FAMILY)
     // For ARM and MIPS processors, always use C version.
     // TODO(hclam): Implement a NEON version.
     diff_proc = &VectorDifference_C;
Index: qtwebengine-everywhere-src-5.15.11/src/3rdparty/chromium/third_party/webrtc/rtc_base/system/arch.h
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/chromium/third_party/webrtc/rtc_base/system/arch.h
+++ qtwebengine-everywhere-src-5.15.11/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-5.15.11/src/3rdparty/gn/tools/gn/args.cc
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/gn/tools/gn/args.cc
+++ qtwebengine-everywhere-src-5.15.11/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-5.15.11/src/3rdparty/gn/util/build_config.h
===================================================================
--- qtwebengine-everywhere-src-5.15.11.orig/src/3rdparty/gn/util/build_config.h
+++ qtwebengine-everywhere-src-5.15.11/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 24509bf3ee942603e05f1c123dd14b3e)

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