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LibWasm: Load and instantiate tables

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This commit is a fairly large refactor, mainly because it unified the
two different ways that existed to represent references.
Now Reference values are also a kind of value.
It also implements a printer for values/references instead of copying
the implementation everywhere.
This commit is contained in:
Ali Mohammad Pur 2021-06-04 03:30:09 +04:30 • committed by Ali Mohammad Pur
parent c392a0cf7f
commit be62e4d1d7
10 changed files with 350 additions and 192 deletions
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32
Userland/Libraries/LibWasm/AbstractMachine/Configuration.cpp
View file

@ -6,6 +6,7 @@
#include <LibWasm/AbstractMachine/Configuration.h>
#include <LibWasm/AbstractMachine/Interpreter.h>
#include <LibWasm/Printer/Printer.h>
namespace Wasm {
@ -24,6 +25,9 @@ Optional<Label> Configuration::nth_label(size_t i)
void Configuration::unwind(Badge<CallFrameHandle>, const CallFrameHandle& frame_handle)
{
if (m_stack.size() == frame_handle.stack_size && frame_handle.frame_index == m_current_frame_index)
return;
VERIFY(m_stack.size() > frame_handle.stack_size);
m_stack.entries().remove(frame_handle.stack_size, m_stack.size() - frame_handle.stack_size);
m_current_frame_index = frame_handle.frame_index;
@ -82,29 +86,21 @@ Result Configuration::execute(Interpreter& interpreter)
void Configuration::dump_stack()
{
auto print_value = []<typename... Ts>(CheckedFormatString<Ts...> format, Ts... vs)
{
DuplexMemoryStream memory_stream;
Printer { memory_stream }.print(vs...);
dbgln(format.view(), StringView(memory_stream.copy_into_contiguous_buffer()).trim_whitespace());
};
for (const auto& entry : stack().entries()) {
entry.visit(
[](const Value& v) {
v.value().visit([]<typename T>(const T& v) {
if constexpr (IsIntegral<T> || IsFloatingPoint<T>)
dbgln(" {}", v);
else if constexpr (IsSame<Value::Null, T>)
dbgln(" *null");
else
dbgln(" *{}", v.value());
});
[&](const Value& v) {
print_value(" {}", v);
},
[](const Frame& f) {
[&](const Frame& f) {
dbgln(" frame({})", f.arity());
for (auto& local : f.locals()) {
local.value().visit([]<typename T>(const T& v) {
if constexpr (IsIntegral<T> || IsFloatingPoint<T>)
dbgln(" {}", v);
else if constexpr (IsSame<Value::Null, T>)
dbgln(" *null");
else
dbgln(" *{}", v.value());
});
print_value(" {}", local);
}
},
[](const Label& l) {