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Debugging LLVM trap code WIP

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This commit is contained in:
Mark McCaskey
2020-04-26 12:52:58 -07:00
parent 89af5dc107
commit 2bbe3406cf
7 changed files with 16 additions and 16 deletions
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16
lib/llvm-backend/cpp/object_loader.hh
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@ -49,9 +49,7 @@ typedef struct {
visit_fde_t visit_fde;
} callbacks_t;
typedef struct {
size_t data;
} runtime_error_t;
using runtime_error_t = void*;
enum WasmTrapType {
Unreachable = 0,
@ -121,7 +119,7 @@ private:
struct WasmErrorSink {
WasmTrapType *trap_out;
runtime_error_t *user_error;
runtime_error_t user_error;
};
struct WasmException : std::exception {
@ -149,7 +147,9 @@ public:
struct UserException : UncatchableException {
public:
UserException(size_t data) : error_data({data}) {}
UserException(size_t data) {
error_data = reinterpret_cast<runtime_error_t>(data);
}
virtual std::string description() const noexcept override {
return "user exception";
@ -159,7 +159,7 @@ public:
runtime_error_t error_data;
virtual void write_error(WasmErrorSink &out) const noexcept override {
*out.user_error = error_data;
out.user_error = error_data;
}
};
@ -274,7 +274,7 @@ result_t module_load(const uint8_t *mem_ptr, size_t mem_size,
void module_delete(WasmModule *module) { delete module; }
// Throw a pointer that's assumed to be `*mut RuntimeError` on the rust
// Throw a pointer that's assumed to be `*mut Option<RuntimeError>` on the rust
// side.
[[noreturn]] void throw_runtime_error(size_t data) {
unsafe_unwind(new UserException(data));
@ -288,7 +288,7 @@ void module_delete(WasmModule *module) { delete module; }
bool cxx_invoke_trampoline(trampoline_t trampoline, void *ctx, void *func,
void *params, void *results, WasmTrapType *trap_out,
runtime_error_t *user_error, void *invoke_env) noexcept {
runtime_error_t user_error, void *invoke_env) noexcept {
try {
catch_unwind([trampoline, ctx, func, params, results]() {
trampoline(ctx, func, params, results);