deps: V8: backport 6a0a25abaed3

dramforever · kxxt · aduh95 · commit 7757cc349500 · 2026-04-03T23:44:57.000+02:00
Original commit message: [riscv] Fix sp handling in MacroAssembler::LeaveFrame Keep sp <= fp to ensure that data right above fp doesn't get clobbered by an inopportune signal and its handler. Such clobbering can happen in e.g. Node.js when JIT-compiled code is interrupted by a SIGCHLD handler. Bug: None Change-Id: Ief0836032ada7942e89f081f7605f61632c4d414 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/7540554 Reviewed-by: Ji Qiu <qiuji@iscas.ac.cn> Commit-Queue: Yahan Lu (LuYahan) <yahan@iscas.ac.cn> Reviewed-by: Rezvan Mahdavi Hezaveh <rezvan@chromium.org> Cr-Commit-Position: refs/heads/main@{#105069} Refs: v8/v8@6a0a25a Co-authored-by: kxxt <rsworktech@outlook.com> PR-URL: #61670 Reviewed-By: Richard Lau <richard.lau@ibm.com>
diff --git a/common.gypi b/common.gypi
@@ -38,7 +38,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.44',
+    'v8_embedder_string': '-node.45',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/AUTHORS b/deps/v8/AUTHORS
@@ -294,6 +294,7 @@ Vadim Gorbachev <bmsdave@gmail.com>
 Varun Varada <varuncvarada@gmail.com>
 Victor Costan <costan@gmail.com>
 Victor Polevoy <fx@thefx.co>
+Vivian Wang <wangruikang@iscas.ac.cn>
 Vlad Burlik <vladbph@gmail.com>
 Vladimir Kempik <vladimir.kempik@syntacore.com>
 Vladimir Krivosheev <develar@gmail.com>
diff --git a/deps/v8/src/codegen/riscv/macro-assembler-riscv.cc b/deps/v8/src/codegen/riscv/macro-assembler-riscv.cc
@@ -6709,9 +6709,10 @@ void MacroAssembler::EnterFrame(StackFrame::Type type) {
 
 void MacroAssembler::LeaveFrame(StackFrame::Type type) {
   ASM_CODE_COMMENT(this);
-  addi(sp, fp, 2 * kSystemPointerSize);
+  Move(sp, fp);
   LoadWord(ra, MemOperand(fp, 1 * kSystemPointerSize));
   LoadWord(fp, MemOperand(fp, 0 * kSystemPointerSize));
+  AddWord(sp, sp, 2 * kSystemPointerSize);
 }
 
 void MacroAssembler::EnterExitFrame(Register scratch, int stack_space,
