Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 238 insertions, 0 deletions

diff --git a/xpcom/reflect/xptcall/md/unix/xptcstubs_aarch64.cpp b/xpcom/reflect/xptcall/md/unix/xptcstubs_aarch64.cpp
new file mode 100644
index 0000000000..d535557259
--- /dev/null
+++ b/xpcom/reflect/xptcall/md/unix/xptcstubs_aarch64.cpp
@@ -0,0 +1,238 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "xptcprivate.h"
+
+#ifndef __AARCH64EL__
+#error "Only little endian compatibility was tested"
+#endif
+
+template<typename T> void
+get_value_and_advance(T* aOutValue, void*& aStack) {
+#ifdef __APPLE__
+    const size_t aligned_size = sizeof(T);
+#else
+    const size_t aligned_size = 8;
+#endif
+    // Ensure the pointer is aligned for the type
+    uintptr_t addr = (reinterpret_cast<uintptr_t>(aStack) + aligned_size - 1) & ~(aligned_size - 1);
+    memcpy(aOutValue, reinterpret_cast<void*>(addr), sizeof(T));
+    aStack = reinterpret_cast<void*>(addr + aligned_size);
+}
+
+/*
+ * This is for AArch64 ABI
+ *
+ * When we're called, the "gp" registers are stored in gprData and
+ * the "fp" registers are stored in fprData. Each array has 8 regs
+ * but first reg in gprData is a placeholder for 'self'.
+ */
+extern "C" nsresult ATTRIBUTE_USED
+PrepareAndDispatch(nsXPTCStubBase* self, uint32_t methodIndex, void* args,
+                   uint64_t *gprData, double *fprData)
+{
+#define PARAM_GPR_COUNT            8
+#define PARAM_FPR_COUNT            8
+
+    nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
+    const nsXPTMethodInfo* info;
+
+    NS_ASSERTION(self,"no self");
+
+    self->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);
+    NS_ASSERTION(info,"no method info");
+
+    uint32_t paramCount = info->GetParamCount();
+
+    const uint8_t indexOfJSContext = info->IndexOfJSContext();
+
+    void* ap = args;
+    uint32_t next_gpr = 1; // skip first arg which is 'self'
+    uint32_t next_fpr = 0;
+    for (uint32_t i = 0; i < paramCount; i++) {
+        const nsXPTParamInfo& param = info->GetParam(i);
+        const nsXPTType& type = param.GetType();
+        nsXPTCMiniVariant* dp = &paramBuffer[i];
+
+        if (i == indexOfJSContext) {
+            if (next_gpr < PARAM_GPR_COUNT)
+                next_gpr++;
+            else {
+                void* value;
+                get_value_and_advance(&value, ap);
+            }
+        }
+
+        if (param.IsOut() || !type.IsArithmetic()) {
+            if (next_gpr < PARAM_GPR_COUNT) {
+                dp->val.p = (void*)gprData[next_gpr++];
+            } else {
+                get_value_and_advance(&dp->val.p, ap);
+            }
+            continue;
+        }
+
+        switch (type) {
+            case nsXPTType::T_I8:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.i8  = (int8_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.i8, ap);
+                }
+                break;
+
+            case nsXPTType::T_I16:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.i16  = (int16_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.i16, ap);
+                }
+                break;
+
+            case nsXPTType::T_I32:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.i32  = (int32_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.i32, ap);
+                }
+                break;
+
+            case nsXPTType::T_I64:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.i64  = (int64_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.i64, ap);
+                }
+                break;
+
+            case nsXPTType::T_U8:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.u8  = (uint8_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.u8, ap);
+                }
+                break;
+
+            case nsXPTType::T_U16:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.u16  = (uint16_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.u16, ap);
+                }
+                break;
+
+            case nsXPTType::T_U32:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.u32  = (uint32_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.u32, ap);
+                }
+                break;
+
+            case nsXPTType::T_U64:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.u64  = (uint64_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.u64, ap);
+                }
+                break;
+
+            case nsXPTType::T_FLOAT:
+                if (next_fpr < PARAM_FPR_COUNT) {
+                    memcpy(&dp->val.f, &fprData[next_fpr++], sizeof(dp->val.f));
+                } else {
+                    get_value_and_advance(&dp->val.f, ap);
+                }
+                break;
+
+            case nsXPTType::T_DOUBLE:
+                if (next_fpr < PARAM_FPR_COUNT) {
+                    memcpy(&dp->val.d, &fprData[next_fpr++], sizeof(dp->val.d));
+                } else {
+                    get_value_and_advance(&dp->val.d, ap);
+                }
+                break;
+
+            case nsXPTType::T_BOOL:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.b  = (bool)(uint8_t)gprData[next_gpr++];
+                } else {
+                    uint8_t value;
+                    get_value_and_advance(&value, ap);
+                    dp->val.b = (bool)value;
+                }
+                break;
+
+            case nsXPTType::T_CHAR:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.c  = (char)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.c, ap);
+                }
+                break;
+
+            case nsXPTType::T_WCHAR:
+                if (next_gpr < PARAM_GPR_COUNT) {
+                    dp->val.wc  = (wchar_t)gprData[next_gpr++];
+                } else {
+                    get_value_and_advance(&dp->val.wc, ap);
+                }
+                break;
+
+            default:
+                NS_ASSERTION(0, "bad type");
+                break;
+        }
+    }
+
+    nsresult result = self->mOuter->CallMethod((uint16_t)methodIndex, info,
+                                               paramBuffer);
+
+    return result;
+}
+
+#ifdef __APPLE__
+#define GNU(str)
+#define UNDERSCORE "__"
+#else
+#define GNU(str) str
+#define UNDERSCORE "_"
+#endif
+
+// Load w17 with the constant 'n' and branch to SharedStub().
+# define STUB_ENTRY(n)                                                  \
+    __asm__ (                                                           \
+            ".text\n\t"                                                 \
+            ".align 2\n\t"                                              \
+            ".if "#n" < 10 \n\t"                                        \
+            ".globl  " UNDERSCORE "ZN14nsXPTCStubBase5Stub"#n"Ev \n\t"  \
+            GNU(".hidden _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t")          \
+            GNU(".type   _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n")\
+            "" UNDERSCORE "ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t"         \
+            ".elseif "#n" < 100 \n\t"                                   \
+            ".globl  " UNDERSCORE "ZN14nsXPTCStubBase6Stub"#n"Ev \n\t"  \
+            GNU(".hidden _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t")          \
+            GNU(".type   _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n")\
+            "" UNDERSCORE "ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t"         \
+            ".elseif "#n" < 1000 \n\t"                                  \
+            ".globl  " UNDERSCORE "ZN14nsXPTCStubBase7Stub"#n"Ev \n\t"  \
+            GNU(".hidden _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t")          \
+            GNU(".type   _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n")\
+            UNDERSCORE "ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t"            \
+            ".else  \n\t"                                               \
+            ".err   \"stub number "#n" >= 1000 not yet supported\"\n"   \
+            ".endif \n\t"                                               \
+            "mov    w17,#"#n" \n\t"                                     \
+            "b      SharedStub \n"                                      \
+);
+
+#define SENTINEL_ENTRY(n)                              \
+    nsresult nsXPTCStubBase::Sentinel##n()             \
+{                                                      \
+    NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \
+    return NS_ERROR_NOT_IMPLEMENTED;                   \
+}
+
+#include "xptcstubsdef.inc"