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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/jit/riscv64/Architecture-riscv64.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit/riscv64/Architecture-riscv64.cpp')
-rw-r--r--js/src/jit/riscv64/Architecture-riscv64.cpp100
1 files changed, 100 insertions, 0 deletions
diff --git a/js/src/jit/riscv64/Architecture-riscv64.cpp b/js/src/jit/riscv64/Architecture-riscv64.cpp
new file mode 100644
index 0000000000..ea4a364b92
--- /dev/null
+++ b/js/src/jit/riscv64/Architecture-riscv64.cpp
@@ -0,0 +1,100 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * 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 "jit/riscv64/Architecture-riscv64.h"
+
+#include "jit/FlushICache.h" // js::jit::FlushICache
+#include "jit/RegisterSets.h"
+#include "jit/Simulator.h"
+namespace js {
+namespace jit {
+Registers::Code Registers::FromName(const char* name) {
+ for (size_t i = 0; i < Total; i++) {
+ if (strcmp(GetName(i), name) == 0) {
+ return Code(i);
+ }
+ }
+
+ return Invalid;
+}
+
+FloatRegisters::Code FloatRegisters::FromName(const char* name) {
+ for (size_t i = 0; i < Total; i++) {
+ if (strcmp(GetName(i), name) == 0) {
+ return Code(i);
+ }
+ }
+
+ return Invalid;
+}
+
+FloatRegisterSet FloatRegister::ReduceSetForPush(const FloatRegisterSet& s) {
+#ifdef ENABLE_WASM_SIMD
+# error "Needs more careful logic if SIMD is enabled"
+#endif
+
+ LiveFloatRegisterSet mod;
+ for (FloatRegisterIterator iter(s); iter.more(); ++iter) {
+ if ((*iter).isSingle()) {
+ // Even for single size registers save complete double register.
+ mod.addUnchecked((*iter).doubleOverlay());
+ } else {
+ mod.addUnchecked(*iter);
+ }
+ }
+ return mod.set();
+}
+
+FloatRegister FloatRegister::singleOverlay() const {
+ MOZ_ASSERT(!isInvalid());
+ if (kind_ == Codes::Double) {
+ return FloatRegister(encoding_, Codes::Single);
+ }
+ return *this;
+}
+
+FloatRegister FloatRegister::doubleOverlay() const {
+ MOZ_ASSERT(!isInvalid());
+ if (kind_ != Codes::Double) {
+ return FloatRegister(encoding_, Codes::Double);
+ }
+ return *this;
+}
+
+uint32_t FloatRegister::GetPushSizeInBytes(
+ const TypedRegisterSet<FloatRegister>& s) {
+#ifdef ENABLE_WASM_SIMD
+# error "Needs more careful logic if SIMD is enabled"
+#endif
+
+ return s.size() * sizeof(double);
+}
+void FlushICache(void* code, size_t size) {
+#if defined(JS_SIMULATOR)
+ js::jit::SimulatorProcess::FlushICache(code, size);
+
+#elif defined(__linux__)
+# if defined(__GNUC__)
+ intptr_t end = reinterpret_cast<intptr_t>(code) + size;
+ __builtin___clear_cache(reinterpret_cast<char*>(code),
+ reinterpret_cast<char*>(end));
+
+# else
+ _flush_cache(reinterpret_cast<char*>(code), size, BCACHE);
+# endif
+#else
+# error "Unsupported platform"
+#endif
+}
+
+bool CPUFlagsHaveBeenComputed() {
+ // TODO Add CPU flags support
+ // Flags were computed above.
+ return true;
+}
+
+} // namespace jit
+} // namespace js