[mips][wasm] Fix saved parameter register

Change-Id: Ic18995af870c41852d5b10dbe5adead7bb36d37e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2043611
Auto-Submit: Yu Yin <xwafish@gmail.com>
Commit-Queue: Yu Yin <xwafish@gmail.com>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66169}

src/builtins/mips/builtins-mips.cc

@@ -2398,7 +2398,7 @@ void Builtins::Generate_WasmCompileLazy(MacroAssembler* masm) {
     // Save all parameter registers (see wasm-linkage.cc). They might be
     // overwritten in the runtime call below. We don't have any callee-saved
     // registers in wasm, so no need to store anything else.
-    constexpr RegList gp_regs = Register::ListOf(a0, a1, a2, a3);
+    constexpr RegList gp_regs = Register::ListOf(a0, a2, a3);
     constexpr RegList fp_regs =
         DoubleRegister::ListOf(f2, f4, f6, f8, f10, f12, f14);
     __ MultiPush(gp_regs);
@@ -2428,10 +2428,10 @@ void Builtins::Generate_WasmDebugBreak(MacroAssembler* masm) {
 
     // Save all parameter registers. They might hold live values, we restore
     // them after the runtime call.
-    RegList gp_regs = 0;
-    for (Register reg : wasm::kGpParamRegisters) gp_regs |= reg.bit();
-    RegList fp_regs = 0;
-    for (DoubleRegister reg : wasm::kFpParamRegisters) fp_regs |= reg.bit();
+    constexpr RegList gp_regs =
+        Register::ListOf(a0, a2, a3, v0, v1);
+    constexpr RegList fp_regs =
+        DoubleRegister::ListOf(f2, f4, f6, f8, f10, f12, f14);
 
     __ MultiPush(gp_regs);
     __ MultiPushFPU(fp_regs);

src/builtins/mips64/builtins-mips64.cc

@@ -2437,7 +2437,7 @@ void Builtins::Generate_WasmCompileLazy(MacroAssembler* masm) {
     // overwritten in the runtime call below. We don't have any callee-saved
     // registers in wasm, so no need to store anything else.
     constexpr RegList gp_regs =
-        Register::ListOf(a0, a1, a2, a3, a4, a5, a6, a7);
+        Register::ListOf(a0, a2, a3, a4, a5, a6, a7);
     constexpr RegList fp_regs =
         DoubleRegister::ListOf(f2, f4, f6, f8, f10, f12, f14);
     __ MultiPush(gp_regs);
@@ -2467,10 +2467,10 @@ void Builtins::Generate_WasmDebugBreak(MacroAssembler* masm) {
 
     // Save all parameter registers. They might hold live values, we restore
     // them after the runtime call.
-    RegList gp_regs = 0;
-    for (Register reg : wasm::kGpParamRegisters) gp_regs |= reg.bit();
-    RegList fp_regs = 0;
-    for (DoubleRegister reg : wasm::kFpParamRegisters) fp_regs |= reg.bit();
+    constexpr RegList gp_regs =
+        Register::ListOf(a0, a2, a3, a4, a5, a6, a7, v0, v1);
+    constexpr RegList fp_regs =
+        DoubleRegister::ListOf(f2, f4, f6, f8, f10, f12, f14);
 
     __ MultiPush(gp_regs);
     __ MultiPushFPU(fp_regs);