PPC/s390: [wasm] Prerequisites for WebAssembly Table.Grow

Port 0c4b8ff4

Original Commit Message:

     - Refactor Dispatch tables to have separate function, signature tables
     - New Relocation type for WasmFunctionTableReference, assembler, compiler support.
     - RelocInfo helper functions for Wasm references

R=gdeepti@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2625683004
Cr-Commit-Position: refs/heads/master@{#42201}

src/compiler/ppc/code-generator-ppc.cc

@@ -2277,11 +2277,9 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
       switch (src.type()) {
         case Constant::kInt32:
 #if V8_TARGET_ARCH_PPC64
-          if (src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+          if (RelocInfo::IsWasmSizeReference(src.rmode())) {
 #else
-          if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE ||
-              src.rmode() == RelocInfo::WASM_GLOBAL_REFERENCE ||
-              src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+          if (RelocInfo::IsWasmReference(src.rmode())) {
 #endif
             __ mov(dst, Operand(src.ToInt32(), src.rmode()));
           } else {
@@ -2290,11 +2288,10 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
           break;
         case Constant::kInt64:
 #if V8_TARGET_ARCH_PPC64
-          if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE ||
-              src.rmode() == RelocInfo::WASM_GLOBAL_REFERENCE) {
+          if (RelocInfo::IsWasmPtrReference(src.rmode())) {
             __ mov(dst, Operand(src.ToInt64(), src.rmode()));
           } else {
-            DCHECK(src.rmode() != RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
+            DCHECK(!RelocInfo::IsWasmSizeReference(src.rmode()));
 #endif
             __ mov(dst, Operand(src.ToInt64()));
 #if V8_TARGET_ARCH_PPC64

src/compiler/s390/code-generator-s390.cc

@@ -2365,11 +2365,9 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
       switch (src.type()) {
         case Constant::kInt32:
 #if V8_TARGET_ARCH_S390X
-          if (src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+          if (RelocInfo::IsWasmSizeReference(src.rmode())) {
 #else
-          if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE ||
-              src.rmode() == RelocInfo::WASM_GLOBAL_REFERENCE ||
-              src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+          if (RelocInfo::IsWasmReference(src.rmode())) {
 #endif
             __ mov(dst, Operand(src.ToInt32(), src.rmode()));
           } else {
@@ -2378,11 +2376,10 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
           break;
         case Constant::kInt64:
 #if V8_TARGET_ARCH_S390X
-          if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE ||
-              src.rmode() == RelocInfo::WASM_GLOBAL_REFERENCE) {
+          if (RelocInfo::IsWasmPtrReference(src.rmode())) {
             __ mov(dst, Operand(src.ToInt64(), src.rmode()));
           } else {
-            DCHECK(src.rmode() != RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
+            DCHECK(!RelocInfo::IsWasmSizeReference(src.rmode()));
             __ mov(dst, Operand(src.ToInt64()));
           }
 #else

src/ppc/assembler-ppc.cc

@@ -171,13 +171,18 @@ Address RelocInfo::wasm_global_reference() {
   return Assembler::target_address_at(pc_, host_);
 }
 
+uint32_t RelocInfo::wasm_function_table_size_reference() {
+  DCHECK(IsWasmFunctionTableSizeReference(rmode_));
+  return static_cast<uint32_t>(
+      reinterpret_cast<intptr_t>(Assembler::target_address_at(pc_, host_)));
+}
 
 void RelocInfo::unchecked_update_wasm_memory_reference(
     Address address, ICacheFlushMode flush_mode) {
   Assembler::set_target_address_at(isolate_, pc_, host_, address, flush_mode);
 }
 
-void RelocInfo::unchecked_update_wasm_memory_size(uint32_t size,
+void RelocInfo::unchecked_update_wasm_size(uint32_t size,
                                            ICacheFlushMode flush_mode) {
   Assembler::set_target_address_at(isolate_, pc_, host_,
                                    reinterpret_cast<Address>(size), flush_mode);

src/s390/assembler-s390.cc

@@ -239,12 +239,18 @@ Address RelocInfo::wasm_global_reference() {
   return Assembler::target_address_at(pc_, host_);
 }
 
+uint32_t RelocInfo::wasm_function_table_size_reference() {
+  DCHECK(IsWasmFunctionTableSizeReference(rmode_));
+  return static_cast<uint32_t>(
+      reinterpret_cast<intptr_t>(Assembler::target_address_at(pc_, host_)));
+}
+
 void RelocInfo::unchecked_update_wasm_memory_reference(
     Address address, ICacheFlushMode flush_mode) {
   Assembler::set_target_address_at(isolate_, pc_, host_, address, flush_mode);
 }
 
-void RelocInfo::unchecked_update_wasm_memory_size(uint32_t size,
+void RelocInfo::unchecked_update_wasm_size(uint32_t size,
                                            ICacheFlushMode flush_mode) {
   Assembler::set_target_address_at(isolate_, pc_, host_,
                                    reinterpret_cast<Address>(size), flush_mode);