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Get memory intrinsics at runtime.

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This commit is contained in:
Heyang Zhou
2019-05-04 10:33:12 -07:00
parent a590d7cd07
commit 46e4cb05bc
2 changed files with 111 additions and 51 deletions
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68
lib/singlepass-backend/src/codegen_x64.rs
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@ -3284,33 +3284,20 @@ impl FunctionCodeGenerator<CodegenError> for X64FunctionCode {
Operator::Nop => {}
Operator::MemorySize { reserved } => {
let memory_index = MemoryIndex::new(reserved as usize);
let target: usize = match memory_index.local_or_import(module_info) {
LocalOrImport::Local(local_mem_index) => {
let mem_desc = &module_info.memories[local_mem_index];
match mem_desc.memory_type() {
MemoryType::Dynamic => vmcalls::local_dynamic_memory_size as usize,
MemoryType::Static => vmcalls::local_static_memory_size as usize,
MemoryType::SharedStatic => unimplemented!(),
}
}
LocalOrImport::Import(import_mem_index) => {
let mem_desc = &module_info.imported_memories[import_mem_index].1;
match mem_desc.memory_type() {
MemoryType::Dynamic => vmcalls::imported_dynamic_memory_size as usize,
MemoryType::Static => vmcalls::imported_static_memory_size as usize,
MemoryType::SharedStatic => unimplemented!(),
}
}
};
a.emit_mov(
Size::S64,
Location::Memory(Machine::get_vmctx_reg(), vm::Ctx::offset_intrinsics() as i32),
Location::GPR(GPR::RAX)
);
a.emit_mov(
Size::S64,
Location::Memory(GPR::RAX, vm::Intrinsics::offset_memory_size() as i32),
Location::GPR(GPR::RAX)
);
Self::emit_call_sysv(
a,
&mut self.machine,
|a| {
a.emit_mov(
Size::S64,
Location::Imm64(target as u64),
Location::GPR(GPR::RAX),
);
a.emit_call_location(Location::GPR(GPR::RAX));
},
::std::iter::once(Location::Imm32(memory_index.index() as u32)),
@ -3321,40 +3308,27 @@ impl FunctionCodeGenerator<CodegenError> for X64FunctionCode {
}
Operator::MemoryGrow { reserved } => {
let memory_index = MemoryIndex::new(reserved as usize);
let target: usize = match memory_index.local_or_import(module_info) {
LocalOrImport::Local(local_mem_index) => {
let mem_desc = &module_info.memories[local_mem_index];
match mem_desc.memory_type() {
MemoryType::Dynamic => vmcalls::local_dynamic_memory_grow as usize,
MemoryType::Static => vmcalls::local_static_memory_grow as usize,
MemoryType::SharedStatic => unimplemented!(),
}
}
LocalOrImport::Import(import_mem_index) => {
let mem_desc = &module_info.imported_memories[import_mem_index].1;
match mem_desc.memory_type() {
MemoryType::Dynamic => vmcalls::imported_dynamic_memory_grow as usize,
MemoryType::Static => vmcalls::imported_static_memory_grow as usize,
MemoryType::SharedStatic => unimplemented!(),
}
}
};
let (param_pages, param_pages_lot) = self.value_stack.pop().unwrap();
if param_pages_lot == LocalOrTemp::Temp {
self.machine.release_locations_only_regs(&[param_pages]);
}
a.emit_mov(
Size::S64,
Location::Memory(Machine::get_vmctx_reg(), vm::Ctx::offset_intrinsics() as i32),
Location::GPR(GPR::RAX)
);
a.emit_mov(
Size::S64,
Location::Memory(GPR::RAX, vm::Intrinsics::offset_memory_grow() as i32),
Location::GPR(GPR::RAX)
);
Self::emit_call_sysv(
a,
&mut self.machine,
|a| {
a.emit_mov(
Size::S64,
Location::Imm64(target as u64),
Location::GPR(GPR::RAX),
);
a.emit_call_location(Location::GPR(GPR::RAX));
},
::std::iter::once(Location::Imm32(memory_index.index() as u32))