Changeset 43273 in webkit for trunk/JavaScriptCore/jit/JITStubs.cpp

Timestamp:

May 5, 2009, 8:20:10 PM (16 years ago)

Author:

[email protected]

Message:

2009-05-05 Geoffrey Garen <​[email protected]>

Reviewed by Cameron Zwarich.

Moved all the JIT stub related code into one place.

• jit/JIT.cpp:
• jit/JIT.h:
• jit/JITCode.h:
• jit/JITStubs.cpp: (JSC::):
• jit/JITStubs.h:

File:

• trunk/JavaScriptCore/jit/JITStubs.cpp (modified) (2 diffs)

trunk/JavaScriptCore/jit/JITStubs.cpp

@@ -62 +62 @@
 
 namespace JSC {
+
+
+#if COMPILER(GCC) && PLATFORM(X86)
+
+COMPILE_ASSERT(STUB_ARGS_code == 0x0C, STUB_ARGS_code_is_0x0C);
+COMPILE_ASSERT(STUB_ARGS_callFrame == 0x0E, STUB_ARGS_callFrame_is_0x0E);
+
+#if PLATFORM(DARWIN)
+#define SYMBOL_STRING(name) "_" #name
+#else
+#define SYMBOL_STRING(name) #name
+#endif
+
+asm(
+".globl " SYMBOL_STRING(ctiTrampoline) "\n"
+SYMBOL_STRING(ctiTrampoline) ":" "\n"
+    "pushl %ebp" "\n"
+    "movl %esp, %ebp" "\n"
+    "pushl %esi" "\n"
+    "pushl %edi" "\n"
+    "pushl %ebx" "\n"
+    "subl $0x1c, %esp" "\n"
+    "movl $512, %esi" "\n"
+    "movl 0x38(%esp), %edi" "\n" // Ox38 = 0x0E * 4, 0x0E = STUB_ARGS_callFrame (see assertion above)
+    "call *0x30(%esp)" "\n" // Ox30 = 0x0C * 4, 0x0C = STUB_ARGS_code (see assertion above)
+    "addl $0x1c, %esp" "\n"
+    "popl %ebx" "\n"
+    "popl %edi" "\n"
+    "popl %esi" "\n"
+    "popl %ebp" "\n"
+    "ret" "\n"
+);
+
+asm(
+".globl " SYMBOL_STRING(ctiVMThrowTrampoline) "\n"
+SYMBOL_STRING(ctiVMThrowTrampoline) ":" "\n"
+#if USE(JIT_STUB_ARGUMENT_VA_LIST)
+    "call " SYMBOL_STRING(_ZN3JSC8JITStubs12cti_vm_throwEPvz) "\n"
+#else
+#if USE(JIT_STUB_ARGUMENT_REGISTER)
+    "movl %esp, %ecx" "\n"
+#else // JIT_STUB_ARGUMENT_STACK
+    "movl %esp, 0(%esp)" "\n"
+#endif
+    "call " SYMBOL_STRING(_ZN3JSC8JITStubs12cti_vm_throwEPPv) "\n"
+#endif
+    "addl $0x1c, %esp" "\n"
+    "popl %ebx" "\n"
+    "popl %edi" "\n"
+    "popl %esi" "\n"
+    "popl %ebp" "\n"
+    "ret" "\n"
+);
+    
+#elif COMPILER(GCC) && PLATFORM(X86_64)
+
+COMPILE_ASSERT(STUB_ARGS_code == 0x10, STUB_ARGS_code_is_0x10);
+COMPILE_ASSERT(STUB_ARGS_callFrame == 0x12, STUB_ARGS_callFrame_is_0x12);
+
+#if PLATFORM(DARWIN)
+#define SYMBOL_STRING(name) "_" #name
+#else
+#define SYMBOL_STRING(name) #name
+#endif
+
+asm(
+".globl " SYMBOL_STRING(ctiTrampoline) "\n"
+SYMBOL_STRING(ctiTrampoline) ":" "\n"
+    "pushq %rbp" "\n"
+    "movq %rsp, %rbp" "\n"
+    "pushq %r12" "\n"
+    "pushq %r13" "\n"
+    "pushq %r14" "\n"
+    "pushq %r15" "\n"
+    "pushq %rbx" "\n"
+    "subq $0x48, %rsp" "\n"
+    "movq $512, %r12" "\n"
+    "movq $0xFFFF000000000000, %r14" "\n"
+    "movq $0xFFFF000000000002, %r15" "\n"
+    "movq 0x90(%rsp), %r13" "\n" // Ox90 = 0x12 * 8, 0x12 = STUB_ARGS_callFrame (see assertion above)
+    "call *0x80(%rsp)" "\n" // Ox80 = 0x10 * 8, 0x10 = STUB_ARGS_code (see assertion above)
+    "addq $0x48, %rsp" "\n"
+    "popq %rbx" "\n"
+    "popq %r15" "\n"
+    "popq %r14" "\n"
+    "popq %r13" "\n"
+    "popq %r12" "\n"
+    "popq %rbp" "\n"
+    "ret" "\n"
+);
+
+asm(
+".globl " SYMBOL_STRING(ctiVMThrowTrampoline) "\n"
+SYMBOL_STRING(ctiVMThrowTrampoline) ":" "\n"
+#if USE(JIT_STUB_ARGUMENT_REGISTER)
+    "movq %rsp, %rdi" "\n"
+    "call " SYMBOL_STRING(_ZN3JSC8JITStubs12cti_vm_throwEPPv) "\n"
+#else // JIT_STUB_ARGUMENT_VA_LIST or JIT_STUB_ARGUMENT_STACK
+#error "JIT_STUB_ARGUMENT configuration not supported."
+#endif
+    "addq $0x48, %rsp" "\n"
+    "popq %rbx" "\n"
+    "popq %r15" "\n"
+    "popq %r14" "\n"
+    "popq %r13" "\n"
+    "popq %r12" "\n"
+    "popq %rbp" "\n"
+    "ret" "\n"
+);
+    
+#elif COMPILER(MSVC)
+
+extern "C" {
+    
+    __declspec(naked) EncodedJSValue ctiTrampoline(void* code, RegisterFile*, CallFrame*, JSValue* exception, Profiler**, JSGlobalData*)
+    {
+        __asm {
+            push ebp;
+            mov ebp, esp;
+            push esi;
+            push edi;
+            push ebx;
+            sub esp, 0x1c;
+            mov esi, 512;
+            mov ecx, esp;
+            mov edi, [esp + 0x38];
+            call [esp + 0x30]; // Ox30 = 0x0C * 4, 0x0C = STUB_ARGS_code (see assertion above)
+            add esp, 0x1c;
+            pop ebx;
+            pop edi;
+            pop esi;
+            pop ebp;
+            ret;
+        }
+    }
+    
+    __declspec(naked) void ctiVMThrowTrampoline()
+    {
+        __asm {
+#if USE(JIT_STUB_ARGUMENT_REGISTER)
+            mov ecx, esp;
+#else // JIT_STUB_ARGUMENT_VA_LIST or JIT_STUB_ARGUMENT_STACK
+#error "JIT_STUB_ARGUMENT configuration not supported."
+#endif
+            call JSC::JITStubs::cti_vm_throw;
+            add esp, 0x1c;
+            pop ebx;
+            pop edi;
+            pop esi;
+            pop ebp;
+            ret;
+        }
+    }
+    
+}
+
+#endif
 
 #if ENABLE(OPCODE_SAMPLING)
@@ -2286 +2443 @@
 }
 
-#undef STUB_RETURN_ADDRESS
-#undef STUB_SET_RETURN_ADDRESS
-#undef BEGIN_STUB_FUNCTION
-#undef CHECK_FOR_EXCEPTION
-#undef CHECK_FOR_EXCEPTION_AT_END
-#undef CHECK_FOR_EXCEPTION_VOID
-#undef VM_THROW_EXCEPTION
-#undef VM_THROW_EXCEPTION_2
-#undef VM_THROW_EXCEPTION_AT_END
-
 } // namespace JSC