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implement Crash

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Folkert 2023-04-27 00:29:21 +02:00
parent f95c79bb53
commit c6c28e7c5d
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2 changed files with 37 additions and 10 deletions
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15
crates/compiler/builtins/bitcode/src/utils.zig
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@ -107,15 +107,16 @@ pub fn memcpy(dst: [*]u8, src: [*]u8, size: usize) void {
// indirection because otherwise zig creates an alias to the panic function which our LLVM code
// does not know how to deal with
pub fn test_panic(c_ptr: *anyopaque, alignment: u32) callconv(.C) void {
pub fn test_panic(c_ptr: *anyopaque, crash_tag: u32) callconv(.C) void {
_ = c_ptr;
_ = alignment;
// const cstr = @ptrCast([*:0]u8, c_ptr);
_ = crash_tag;
// const stderr = std.io.getStdErr().writer();
// stderr.print("Roc panicked: {s}!\n", .{cstr}) catch unreachable;
// std.c.exit(1);
// const cstr = @ptrCast([*:0]u8, c_ptr);
//
// const stderr = std.io.getStdErr().writer();
// stderr.print("Roc panicked: {s}!\n", .{cstr}) catch unreachable;
//
// std.c.exit(1);
}
pub const Inc = fn (?[*]u8) callconv(.C) void;

32
crates/compiler/gen_dev/src/lib.rs
View file

@ -14,8 +14,8 @@ use roc_module::low_level::{LowLevel, LowLevelWrapperType};
use roc_module::symbol::{Interns, ModuleId, Symbol};
use roc_mono::code_gen_help::{CallerProc, CodeGenHelp};
use roc_mono::ir::{
BranchInfo, CallType, Expr, HigherOrderLowLevel, JoinPointId, ListLiteralElement, Literal,
Param, Proc, ProcLayout, SelfRecursive, Stmt,
BranchInfo, CallType, CrashTag, Expr, HigherOrderLowLevel, JoinPointId, ListLiteralElement,
Literal, Param, Proc, ProcLayout, SelfRecursive, Stmt,
};
use roc_mono::layout::{
Builtin, InLayout, Layout, LayoutIds, LayoutInterner, STLayoutInterner, TagIdIntType,
@ -279,9 +279,33 @@ trait Backend<'a> {
self.build_jump(id, args, arg_layouts.into_bump_slice(), ret_layout);
self.free_symbols(stmt);
}
Stmt::Crash(msg, crash_tag) => self.roc_panic(*msg, *crash_tag),
x => todo!("the statement, {:?}", x),
}
}
fn roc_panic(&mut self, msg: Symbol, crash_tag: CrashTag) {
self.load_literal(
&Symbol::DEV_TMP,
&Layout::U32,
&Literal::Int((crash_tag as u128).to_ne_bytes()),
);
// Now that the arguments are needed, load them if they are literals.
let arguments = &[msg, Symbol::DEV_TMP];
self.load_literal_symbols(arguments);
self.build_fn_call(
&Symbol::DEV_TMP2,
String::from("roc_panic"),
arguments,
&[Layout::STR, Layout::U32],
&Layout::UNIT,
);
self.free_symbol(&Symbol::DEV_TMP);
self.free_symbol(&Symbol::DEV_TMP2);
}
// build_switch generates a instructions for a switch statement.
fn build_switch(
&mut self,
@ -1758,7 +1782,9 @@ trait Backend<'a> {
Stmt::Expect { .. } => todo!("expect is not implemented in the dev backend"),
Stmt::ExpectFx { .. } => todo!("expect-fx is not implemented in the dev backend"),
Stmt::Crash(..) => todo!("crash is not implemented in the dev backend"),
Stmt::Crash(msg, _crash_tag) => {
self.set_last_seen(*msg, stmt);
}
}
}