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https://github.com/fluencelabs/wasmer
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Remove runtime dependence for BrTable
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parent
af58ea5642
commit
7a4b2172a5
@ -134,7 +134,6 @@ pub struct X64FunctionCode {
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assembler: Option<Assembler>,
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assembler: Option<Assembler>,
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function_labels: Option<HashMap<usize, (DynamicLabel, Option<AssemblyOffset>)>>,
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function_labels: Option<HashMap<usize, (DynamicLabel, Option<AssemblyOffset>)>>,
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br_table_data: Option<Vec<Vec<usize>>>,
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breakpoints: Option<HashMap<AssemblyOffset, Box<Fn(BkptInfo) + Send + Sync + 'static>>>,
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breakpoints: Option<HashMap<AssemblyOffset, Box<Fn(BkptInfo) + Send + Sync + 'static>>>,
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returns: SmallVec<[WpType; 1]>,
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returns: SmallVec<[WpType; 1]>,
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locals: Vec<Location>,
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locals: Vec<Location>,
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@ -161,7 +160,6 @@ pub struct X64ExecutionContext {
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function_pointers: Vec<FuncPtr>,
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function_pointers: Vec<FuncPtr>,
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function_offsets: Vec<AssemblyOffset>,
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function_offsets: Vec<AssemblyOffset>,
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signatures: Arc<Map<SigIndex, FuncSig>>,
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signatures: Arc<Map<SigIndex, FuncSig>>,
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_br_table_data: Vec<Vec<usize>>,
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breakpoints: Arc<HashMap<usize, Box<Fn(BkptInfo) + Send + Sync + 'static>>>,
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breakpoints: Arc<HashMap<usize, Box<Fn(BkptInfo) + Send + Sync + 'static>>>,
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func_import_count: usize,
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func_import_count: usize,
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}
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}
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@ -309,18 +307,16 @@ impl ModuleCodeGenerator<X64FunctionCode, X64ExecutionContext, CodegenError>
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}
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}
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fn next_function(&mut self) -> Result<&mut X64FunctionCode, CodegenError> {
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fn next_function(&mut self) -> Result<&mut X64FunctionCode, CodegenError> {
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let (mut assembler, mut function_labels, br_table_data, breakpoints) =
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let (mut assembler, mut function_labels, breakpoints) =
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match self.functions.last_mut() {
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match self.functions.last_mut() {
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Some(x) => (
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Some(x) => (
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x.assembler.take().unwrap(),
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x.assembler.take().unwrap(),
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x.function_labels.take().unwrap(),
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x.function_labels.take().unwrap(),
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x.br_table_data.take().unwrap(),
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x.breakpoints.take().unwrap(),
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x.breakpoints.take().unwrap(),
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),
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),
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None => (
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None => (
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self.assembler.take().unwrap(),
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self.assembler.take().unwrap(),
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self.function_labels.take().unwrap(),
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self.function_labels.take().unwrap(),
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vec![],
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HashMap::new(),
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HashMap::new(),
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),
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),
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};
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};
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@ -343,7 +339,6 @@ impl ModuleCodeGenerator<X64FunctionCode, X64ExecutionContext, CodegenError>
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assembler: Some(assembler),
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assembler: Some(assembler),
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function_labels: Some(function_labels),
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function_labels: Some(function_labels),
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br_table_data: Some(br_table_data),
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breakpoints: Some(breakpoints),
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breakpoints: Some(breakpoints),
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returns: smallvec![],
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returns: smallvec![],
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locals: vec![],
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locals: vec![],
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@ -359,10 +354,9 @@ impl ModuleCodeGenerator<X64FunctionCode, X64ExecutionContext, CodegenError>
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}
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}
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fn finalize(mut self, _: &ModuleInfo) -> Result<X64ExecutionContext, CodegenError> {
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fn finalize(mut self, _: &ModuleInfo) -> Result<X64ExecutionContext, CodegenError> {
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let (assembler, mut br_table_data, breakpoints) = match self.functions.last_mut() {
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let (assembler, breakpoints) = match self.functions.last_mut() {
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Some(x) => (
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Some(x) => (
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x.assembler.take().unwrap(),
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x.assembler.take().unwrap(),
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x.br_table_data.take().unwrap(),
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x.breakpoints.take().unwrap(),
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x.breakpoints.take().unwrap(),
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),
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),
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None => {
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None => {
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@ -373,12 +367,6 @@ impl ModuleCodeGenerator<X64FunctionCode, X64ExecutionContext, CodegenError>
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};
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};
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let output = assembler.finalize().unwrap();
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let output = assembler.finalize().unwrap();
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for table in &mut br_table_data {
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for entry in table {
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*entry = output.ptr(AssemblyOffset(*entry)) as usize;
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}
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}
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let function_labels = if let Some(x) = self.functions.last() {
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let function_labels = if let Some(x) = self.functions.last() {
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x.function_labels.as_ref().unwrap()
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x.function_labels.as_ref().unwrap()
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} else {
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} else {
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@ -419,7 +407,6 @@ impl ModuleCodeGenerator<X64FunctionCode, X64ExecutionContext, CodegenError>
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code: output,
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code: output,
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functions: self.functions,
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functions: self.functions,
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signatures: self.signatures.as_ref().unwrap().clone(),
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signatures: self.signatures.as_ref().unwrap().clone(),
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_br_table_data: br_table_data,
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breakpoints: breakpoints,
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breakpoints: breakpoints,
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func_import_count: self.func_import_count,
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func_import_count: self.func_import_count,
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function_pointers: out_labels,
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function_pointers: out_labels,
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@ -4051,7 +4038,8 @@ impl FunctionCodeGenerator<CodegenError> for X64FunctionCode {
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let (targets, default_target) = table.read_table().unwrap();
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let (targets, default_target) = table.read_table().unwrap();
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let cond =
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let cond =
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get_location_released(a, &mut self.machine, self.value_stack.pop().unwrap());
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get_location_released(a, &mut self.machine, self.value_stack.pop().unwrap());
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let mut table = vec![0usize; targets.len()];
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let mut table_label = a.get_label();
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let mut table: Vec<DynamicLabel> = vec![];
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let default_br = a.get_label();
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let default_br = a.get_label();
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Self::emit_relaxed_binop(
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Self::emit_relaxed_binop(
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a,
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a,
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@ -4063,19 +4051,19 @@ impl FunctionCodeGenerator<CodegenError> for X64FunctionCode {
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);
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);
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a.emit_jmp(Condition::AboveEqual, default_br);
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a.emit_jmp(Condition::AboveEqual, default_br);
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a.emit_mov(
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a.emit_lea_label(
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Size::S64,
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table_label,
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Location::Imm64(table.as_ptr() as usize as u64),
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Location::GPR(GPR::RCX),
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Location::GPR(GPR::RCX),
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);
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);
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a.emit_mov(Size::S32, cond, Location::GPR(GPR::RDX));
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a.emit_mov(Size::S32, cond, Location::GPR(GPR::RDX));
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a.emit_shl(Size::S32, Location::Imm8(3), Location::GPR(GPR::RDX));
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a.emit_imul_imm32_gpr64(5, GPR::RDX);
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a.emit_add(Size::S64, Location::GPR(GPR::RCX), Location::GPR(GPR::RDX));
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a.emit_add(Size::S64, Location::GPR(GPR::RCX), Location::GPR(GPR::RDX));
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a.emit_jmp_location(Location::Memory(GPR::RDX, 0));
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a.emit_jmp_location(Location::GPR(GPR::RDX));
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for (i, target) in targets.iter().enumerate() {
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for (i, target) in targets.iter().enumerate() {
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let AssemblyOffset(offset) = a.offset();
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let label = a.get_label();
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table[i] = offset;
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a.emit_label(label);
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table.push(label);
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let frame =
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let frame =
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&self.control_stack[self.control_stack.len() - 1 - (*target as usize)];
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&self.control_stack[self.control_stack.len() - 1 - (*target as usize)];
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if !frame.loop_like && frame.returns.len() > 0 {
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if !frame.loop_like && frame.returns.len() > 0 {
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@ -4110,7 +4098,10 @@ impl FunctionCodeGenerator<CodegenError> for X64FunctionCode {
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a.emit_jmp(Condition::None, frame.label);
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a.emit_jmp(Condition::None, frame.label);
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}
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}
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self.br_table_data.as_mut().unwrap().push(table);
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a.emit_label(table_label);
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for x in table {
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a.emit_jmp(Condition::None, x);
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}
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self.unreachable_depth = 1;
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self.unreachable_depth = 1;
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}
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}
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Operator::Drop => {
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Operator::Drop => {
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