diff --git a/src/backend_x64/a32_emit_x64.cpp b/src/backend_x64/a32_emit_x64.cpp
index 422cff7f..80ca023c 100644
--- a/src/backend_x64/a32_emit_x64.cpp
+++ b/src/backend_x64/a32_emit_x64.cpp
@@ -148,58 +148,58 @@ void A32EmitX64::InvalidateCacheRanges(const boost::icl::interval_set<u32>& rang
 void A32EmitX64::GenMemoryAccessors() {
     code.align();
     read_memory_8 = code.getCurr<const void*>();
-    ABI_PushCallerSaveRegistersAndAdjustStack(code);
+    ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     DEVIRT(config.callbacks, &A32::UserCallbacks::MemoryRead8).EmitCall(code);
-    ABI_PopCallerSaveRegistersAndAdjustStack(code);
+    ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     code.ret();
 
     code.align();
     read_memory_16 = code.getCurr<const void*>();
-    ABI_PushCallerSaveRegistersAndAdjustStack(code);
+    ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     DEVIRT(config.callbacks, &A32::UserCallbacks::MemoryRead16).EmitCall(code);
-    ABI_PopCallerSaveRegistersAndAdjustStack(code);
+    ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     code.ret();
 
     code.align();
     read_memory_32 = code.getCurr<const void*>();
-    ABI_PushCallerSaveRegistersAndAdjustStack(code);
+    ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     DEVIRT(config.callbacks, &A32::UserCallbacks::MemoryRead32).EmitCall(code);
-    ABI_PopCallerSaveRegistersAndAdjustStack(code);
+    ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     code.ret();
 
     code.align();
     read_memory_64 = code.getCurr<const void*>();
-    ABI_PushCallerSaveRegistersAndAdjustStack(code);
+    ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     DEVIRT(config.callbacks, &A32::UserCallbacks::MemoryRead64).EmitCall(code);
-    ABI_PopCallerSaveRegistersAndAdjustStack(code);
+    ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     code.ret();
 
     code.align();
     write_memory_8 = code.getCurr<const void*>();
-    ABI_PushCallerSaveRegistersAndAdjustStack(code);
+    ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     DEVIRT(config.callbacks, &A32::UserCallbacks::MemoryWrite8).EmitCall(code);
-    ABI_PopCallerSaveRegistersAndAdjustStack(code);
+    ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     code.ret();
 
     code.align();
     write_memory_16 = code.getCurr<const void*>();
-    ABI_PushCallerSaveRegistersAndAdjustStack(code);
+    ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     DEVIRT(config.callbacks, &A32::UserCallbacks::MemoryWrite16).EmitCall(code);
-    ABI_PopCallerSaveRegistersAndAdjustStack(code);
+    ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     code.ret();
 
     code.align();
     write_memory_32 = code.getCurr<const void*>();
-    ABI_PushCallerSaveRegistersAndAdjustStack(code);
+    ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     DEVIRT(config.callbacks, &A32::UserCallbacks::MemoryWrite32).EmitCall(code);
-    ABI_PopCallerSaveRegistersAndAdjustStack(code);
+    ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     code.ret();
 
     code.align();
     write_memory_64 = code.getCurr<const void*>();
-    ABI_PushCallerSaveRegistersAndAdjustStack(code);
+    ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     DEVIRT(config.callbacks, &A32::UserCallbacks::MemoryWrite64).EmitCall(code);
-    ABI_PopCallerSaveRegistersAndAdjustStack(code);
+    ABI_PopCallerSaveRegistersAndAdjustStackExcept(code, ABI_RETURN);
     code.ret();
 }
 
diff --git a/src/backend_x64/abi.cpp b/src/backend_x64/abi.cpp
index a3889afd..c249f664 100644
--- a/src/backend_x64/abi.cpp
+++ b/src/backend_x64/abi.cpp
@@ -126,4 +126,16 @@ void ABI_PopCallerSaveRegistersAndAdjustStack(Xbyak::CodeGenerator& code, size_t
     ABI_PopRegistersAndAdjustStack(code, frame_size, ABI_ALL_CALLER_SAVE);
 }
 
+void ABI_PushCallerSaveRegistersAndAdjustStackExcept(Xbyak::CodeGenerator& code, HostLoc exception) {
+    std::vector<HostLoc> regs;
+    std::remove_copy(ABI_ALL_CALLER_SAVE.begin(), ABI_ALL_CALLER_SAVE.end(), std::back_inserter(regs), exception);
+    ABI_PushRegistersAndAdjustStack(code, 0, regs);
+}
+
+void ABI_PopCallerSaveRegistersAndAdjustStackExcept(Xbyak::CodeGenerator& code, HostLoc exception) {
+    std::vector<HostLoc> regs;
+    std::remove_copy(ABI_ALL_CALLER_SAVE.begin(), ABI_ALL_CALLER_SAVE.end(), std::back_inserter(regs), exception);
+    ABI_PopRegistersAndAdjustStack(code, 0, regs);
+}
+
 } // namespace Dynarmic::BackendX64
diff --git a/src/backend_x64/abi.h b/src/backend_x64/abi.h
index b097efcb..1b13271c 100644
--- a/src/backend_x64/abi.h
+++ b/src/backend_x64/abi.h
@@ -20,7 +20,8 @@ constexpr HostLoc ABI_PARAM2 = HostLoc::RDX;
 constexpr HostLoc ABI_PARAM3 = HostLoc::R8;
 constexpr HostLoc ABI_PARAM4 = HostLoc::R9;
 
-constexpr std::array<HostLoc, 12> ABI_ALL_CALLER_SAVE = {
+constexpr std::array<HostLoc, 13> ABI_ALL_CALLER_SAVE = {
+    HostLoc::RAX,
     HostLoc::RCX,
     HostLoc::RDX,
     HostLoc::R8,
@@ -67,7 +68,8 @@ constexpr HostLoc ABI_PARAM2 = HostLoc::RSI;
 constexpr HostLoc ABI_PARAM3 = HostLoc::RDX;
 constexpr HostLoc ABI_PARAM4 = HostLoc::RCX;
 
-constexpr std::array<HostLoc, 24> ABI_ALL_CALLER_SAVE = {
+constexpr std::array<HostLoc, 25> ABI_ALL_CALLER_SAVE = {
+    HostLoc::RAX,
     HostLoc::RCX,
     HostLoc::RDX,
     HostLoc::RDI,
@@ -107,11 +109,14 @@ constexpr size_t ABI_SHADOW_SPACE = 0; // bytes
 
 #endif
 
-static_assert(ABI_ALL_CALLER_SAVE.size() + ABI_ALL_CALLEE_SAVE.size() == 30, "Invalid total number of registers");
+static_assert(ABI_ALL_CALLER_SAVE.size() + ABI_ALL_CALLEE_SAVE.size() == 31, "Invalid total number of registers");
 
 void ABI_PushCalleeSaveRegistersAndAdjustStack(Xbyak::CodeGenerator& code, size_t frame_size = 0);
 void ABI_PopCalleeSaveRegistersAndAdjustStack(Xbyak::CodeGenerator& code, size_t frame_size = 0);
 void ABI_PushCallerSaveRegistersAndAdjustStack(Xbyak::CodeGenerator& code, size_t frame_size = 0);
 void ABI_PopCallerSaveRegistersAndAdjustStack(Xbyak::CodeGenerator& code, size_t frame_size = 0);
 
+void ABI_PushCallerSaveRegistersAndAdjustStackExcept(Xbyak::CodeGenerator& code, HostLoc exception);
+void ABI_PopCallerSaveRegistersAndAdjustStackExcept(Xbyak::CodeGenerator& code, HostLoc exception);
+
 } // namespace Dynarmic::BackendX64
diff --git a/src/backend_x64/reg_alloc.cpp b/src/backend_x64/reg_alloc.cpp
index ac891d47..10ef9b17 100644
--- a/src/backend_x64/reg_alloc.cpp
+++ b/src/backend_x64/reg_alloc.cpp
@@ -351,6 +351,7 @@ void RegAlloc::HostCall(IR::Inst* result_def, boost::optional<Argument&> arg0, b
     static const std::vector<HostLoc> other_caller_save = [args_hostloc]() {
         std::vector<HostLoc> ret(ABI_ALL_CALLER_SAVE.begin(), ABI_ALL_CALLER_SAVE.end());
 
+        ret.erase(std::find(ret.begin(), ret.end(), ABI_RETURN));
         for (auto hostloc : args_hostloc)
             ret.erase(std::find(ret.begin(), ret.end(), hostloc));