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compiler: END command compilation

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ProgramSnail 2025-01-23 02:09:16 +03:00
parent 44d50c4c8e
commit 74efa60218
1 changed files with 41 additions and 2 deletions
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43
byterun/src/compiler.cpp
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@ -2087,8 +2087,47 @@ std::vector<Instr> compile(const Options &cmd, Env &env,
[&env](const SMInstr::BEGIN &x) -> std::vector<Instr> { [&env](const SMInstr::BEGIN &x) -> std::vector<Instr> {
return {}; /* TODO */ return {}; /* TODO */
}, },
[&env](const SMInstr::END &x) -> std::vector<Instr> { [&env](const SMInstr::END &y) -> std::vector<Instr> {
return {}; /* TODO */ const auto x = env.pop();
env.assert_empty_stack();
const auto &name = env.fname;
std::optional<Instr> stabs =
env.do_opt_stabs()
? Meta{std::format("\t.size {}, .-{}", name, name)}
: std::optional<Instr>{};
std::vector<Instr> result = utils::concat(
std::vector<Instr>{
Mov{x, rax},
/*!!*/
Label{env.epilogue()},
Mov{rbp, rsp},
Pop{rbp},
},
std::optional<Instr>{name == "main"
? Binop{Opr::XOR, rax, rax}
: std::optional<Instr>{}},
std::vector<Instr>{
Meta{"\t.cfi_restore\t5"},
Meta{"\t.cfi_def_cfa\t4, 4"},
Ret{},
Meta{"\t.cfi_endproc"},
Meta{
/* Allocate space for the symbolic stack
Add extra word if needed to preserve alignment */
std::format(
"\t.set\t{},\t{}", env.prefixed(env.lsize()),
(env.get_allocated() % 2 == 0
? (env.get_allocated() * word_size)
: ((env.get_allocated() + 1) * word_size)))},
Meta{std::format("\t.set\t{},\t{}",
env.prefixed(env.get_allocated_size()),
env.get_allocated())},
},
std::move(stabs));
env.leave();
return std::move(result);
}, },
[&env](const SMInstr::RET &) -> std::vector<Instr> { [&env](const SMInstr::RET &) -> std::vector<Instr> {
const auto x = env.peek(); const auto x = env.peek();