Begin work on supporting wasm64; Correct wasm32 compilation behaviour

core/runtime/default_temporary_allocator.odin

@@ -17,6 +17,19 @@ Default_Temp_Allocator :: struct {
 	leaked_allocations: [dynamic][]byte,
 }
 
+when ODIN_OS == "freestanding" {
+	default_temp_allocator_init :: proc(s: ^Default_Temp_Allocator, size: int, backup_allocator := context.allocator) {
+	}
+	
+	default_temp_allocator_destroy :: proc(s: ^Default_Temp_Allocator) {
+	}
+	
+	default_temp_allocator_proc :: proc(allocator_data: rawptr, mode: Allocator_Mode,
+	                                    size, alignment: int,
+	                                    old_memory: rawptr, old_size: int, loc := #caller_location) -> (data: []byte, err: Allocator_Error) {
+		return nil, nil		
+	}
+} else {
 	default_temp_allocator_init :: proc(s: ^Default_Temp_Allocator, size: int, backup_allocator := context.allocator) {
 		s.data = make_aligned([]byte, size, 2*align_of(rawptr), backup_allocator)
 		s.curr_offset = 0
@@ -187,6 +200,7 @@ default_temp_allocator_proc :: proc(allocator_data: rawptr, mode: Allocator_Mode
 
 		return
 	}
+}
 
 default_temp_allocator :: proc(allocator: ^Default_Temp_Allocator) -> Allocator {
 	return Allocator{

src/build_settings.cpp

@@ -29,6 +29,7 @@ enum TargetArchKind {
 	TargetArch_386,
 	TargetArch_arm64,
 	TargetArch_wasm32,
+	TargetArch_wasm64,
 
 	TargetArch_COUNT,
 };
@@ -59,6 +60,7 @@ String target_arch_names[TargetArch_COUNT] = {
 	str_lit("386"),
 	str_lit("arm64"),
 	str_lit("wasm32"),
+	str_lit("wasm64"),
 };
 
 String target_endian_names[TargetEndian_COUNT] = {
@@ -72,6 +74,7 @@ TargetEndianKind target_endians[TargetArch_COUNT] = {
 	TargetEndian_Little,
 	TargetEndian_Little,
 	TargetEndian_Little,
+	TargetEndian_Little,
 };
 
 #ifndef ODIN_VERSION_RAW
@@ -335,6 +338,16 @@ gb_global TargetMetrics target_freestanding_wasm32 = {
 	str_lit(""),
 };
 
+gb_global TargetMetrics target_freestanding_wasm64 = {
+	TargetOs_freestanding,
+	TargetArch_wasm64,
+	8,
+	16,
+	str_lit("wasm64-freestanding-js"),
+	str_lit(""),
+};
+
+
 
 
 struct NamedTargetMetrics {
@@ -353,6 +366,7 @@ gb_global NamedTargetMetrics named_targets[] = {
 	{ str_lit("freebsd_386"),    &target_freebsd_386    },
 	{ str_lit("freebsd_amd64"),  &target_freebsd_amd64  },
 	{ str_lit("freestanding_wasm32"), &target_freestanding_wasm32 },
+	{ str_lit("freestanding_wasm64"), &target_freestanding_wasm64 },
 };
 
 NamedTargetMetrics *selected_target_metrics;
@@ -458,11 +472,21 @@ bool find_library_collection_path(String name, String *path) {
 }
 
 bool is_arch_wasm(void) {
-	return build_context.metrics.arch == TargetArch_wasm32;
+	switch (build_context.metrics.arch) {
+	case TargetArch_wasm32:
+	case TargetArch_wasm64:
+		return true;
+	}
+	return false;
 }
 
 bool allow_check_foreign_filepath(void) {
-	return build_context.metrics.arch != TargetArch_wasm32;
+	switch (build_context.metrics.arch) {
+	case TargetArch_wasm32:
+	case TargetArch_wasm64:
+		return false;
+	}
+	return true;
 }
 
 
@@ -870,7 +894,7 @@ void init_build_context(TargetMetrics *cross_target) {
 			break;
 		}
 
-	} else if (bc->metrics.arch == TargetArch_wasm32) {
+	} else if (is_arch_wasm()) {
 		bc->link_flags = str_lit("--no-entry --export-table --export-all --allow-undefined ");
 	} else {
 		gb_printf_err("Compiler Error: Unsupported architecture\n");;

src/llvm_abi.cpp

@@ -1061,19 +1061,27 @@ LB_ABI_INFO(lb_get_abi_info) {
 		}
 	}
 
-	if (build_context.metrics.arch == TargetArch_amd64) {
+	switch (build_context.metrics.arch) {
+	case TargetArch_amd64:
 		if (build_context.metrics.os == TargetOs_windows) {
 			return lbAbiAmd64Win64::abi_info(c, arg_types, arg_count, return_type, return_is_defined, calling_convention);
 		} else {
 			return lbAbiAmd64SysV::abi_info(c, arg_types, arg_count, return_type, return_is_defined, calling_convention);
 		}
-	} else if (build_context.metrics.arch == TargetArch_386) {
+	case TargetArch_386:
 		return lbAbi386::abi_info(c, arg_types, arg_count, return_type, return_is_defined, calling_convention);
-	} else if (build_context.metrics.arch == TargetArch_arm64) {
+	case TargetArch_arm64:
 		return lbAbiArm64::abi_info(c, arg_types, arg_count, return_type, return_is_defined, calling_convention);
-	} else if (build_context.metrics.arch == TargetArch_wasm32) {
+	case TargetArch_wasm32:
+		// TODO(bill): implement wasm32's ABI correct 
+		// NOTE(bill): this ABI is only an issue for WASI compatibility
 		return lbAbi386::abi_info(c, arg_types, arg_count, return_type, return_is_defined, calling_convention);
+	case TargetArch_wasm64:
+		// TODO(bill): implement wasm64's ABI correct 
+		// NOTE(bill): this ABI is only an issue for WASI compatibility
+		return lbAbiAmd64SysV::abi_info(c, arg_types, arg_count, return_type, return_is_defined, calling_convention);
 	}
+
 	GB_PANIC("Unsupported ABI");
 	return {};
 }

src/llvm_backend.cpp

@@ -1148,6 +1148,7 @@ void lb_generate_code(lbGenerator *gen) {
 		LLVMInitializeAArch64Disassembler();
 		break;
 	case TargetArch_wasm32:
+	case TargetArch_wasm64:
 		LLVMInitializeWebAssemblyTargetInfo();
 		LLVMInitializeWebAssemblyTarget();
 		LLVMInitializeWebAssemblyTargetMC();

src/llvm_backend_expr.cpp

@@ -496,6 +496,7 @@ bool lb_is_matrix_simdable(Type *t) {
 		break;
 	case TargetArch_386:
 	case TargetArch_wasm32:
+	case TargetArch_wasm64:
 		// nope
 		return false;
 	}
@@ -513,6 +514,7 @@ bool lb_is_matrix_simdable(Type *t) {
 				return true;
 			case TargetArch_386:
 			case TargetArch_wasm32:
+			case TargetArch_wasm64:
 				return false;
 			}
 		}

src/llvm_backend_utility.cpp

@@ -1504,6 +1504,7 @@ lbValue lb_emit_mul_add(lbProcedure *p, lbValue a, lbValue b, lbValue c, Type *t
 			break;
 		case TargetArch_386:
 		case TargetArch_wasm32:
+		case TargetArch_wasm64:
 			is_possible = false;
 			break;
 		}

src/main.cpp

@@ -135,13 +135,20 @@ i32 linker_stage(lbGenerator *gen) {
 
 	if (is_arch_wasm()) {
 		timings_start_section(timings, str_lit("wasm-ld"));
+		
+		if (build_context.metrics.arch == TargetArch_wasm32) {
 			result = system_exec_command_line_app("wasm-ld",
-			"\"%.*s\\bin\\wasm-ld\" \"%.*s.wasm-obj\" -o \"%.*s.wasm\" %.*s %.*s",
+				"\"%.*s\\bin\\wasm-ld\" \"%.*s.wasm.o\" -o \"%.*s.wasm\" %.*s %.*s",
+				LIT(build_context.ODIN_ROOT),
+				LIT(output_base), LIT(output_base), LIT(build_context.link_flags), LIT(build_context.extra_linker_flags));
+		} else {
+			GB_ASSERT(build_context.metrics.arch == TargetArch_wasm64);
+			result = system_exec_command_line_app("wasm-ld",
+				"\"%.*s\\bin\\wasm-ld\" \"%.*s.wasm.o\" -o \"%.*s.wasm\" %.*s %.*s",
 				LIT(build_context.ODIN_ROOT),
 				LIT(output_base), LIT(output_base), LIT(build_context.link_flags), LIT(build_context.extra_linker_flags));
-		if (result) {
-			return result;
 		}
+		return result;
 	}
 
 	if (build_context.cross_compiling && selected_target_metrics->metrics == &target_essence_amd64) {