* the .debug_line header is written properly
* link.File.Elf gains:
- SrcFn, which is now a field in Module.Fn
- SrcFile, which is now a field in Module.Scope.File
* link.File.Elf gets a whole *Package field rather than only
root_src_dir_path.
* the fields first_dbg_line_file and last_dbg_line_file tell where the
Line Number Program begins and ends, which alows moving files when
the header gets too big, and allows appending files to the end.
* codegen is passed a buffer for emitting .debug_line
Line Number Program opcodes for functions.
See #5963
There is some work-in-progress code here, but I need to go make some
experimental changes to changing how to represent source locations and I
want to do that in a separate commit.
This shaves off one syscall (we use one instead of two if we were to
use `windows.OpenFile` wrapper). Clean up flag generation in `OpenFile`.
Hopefully, we're in a much better place to *almost* support `openW`
and `openatW`.
This way, we can remove more `kernel32` calls such as `RemoveDirectoryW`
or `DeleteFileW`, and use `std.os.windows.DeleteFile` instead which
is purely NT-based.
Replace them with `std.os.windows.OpenFile` instead. To allow
creation/opening of directories, `std.os.windows.OpenFileOptions`
now features a `.expect_dir: bool` member which is meant to emualate
POSIX's `O_DIRECTORY` flag.
As discussed in the previous commit, it would be better to avoid
function pointers to syscalls and explicitly split the control
path into two function calls instead. This commit addresses that
for `std.os.windows.DeviceIoControl`.
When there are no format parameters, it simply calls `writeAll`. This
has the effect of no longer emitting a compile error for using `{}` and
not having any parameters, however, at this point in the development
process of Zig I think that tradeoff is worthwhile.
On the other hand, it might be OK to simply define formatting to work
this way. It's a common pattern to use the formatting function's format
string `"like this", .{}` instead of `"{}", .{"like this"}`, which can
lead to accidentally putting control characters in the formatting
string, however, with this change that works just fine.
This commit adds a Zig wrapper for `kernel32.DeviceIoControl` which
applies ReactOS logic for deciding whether to use
`ntdll.NtDeviceIoControlFile` or `ntdll.NtFsControlFile` based on the
value of passed `IO_CONTROL_CODE`. The decision logic is based on the
logic found in ReactOS found in the following [link].
Thanks to Daurnimator for finding this bit in ReactOS!
[link]: https://doxygen.reactos.org/d3/d74/deviceio_8c.html
* Added `replace` for simple pre-allocated search-and-replace
* Added `replacementSize` for calculating ahead-of-time buffer sizes for
performing a safe search-and-replace
* Added `replaceOwned` for automatically allocating and performing
replacement
* AST: flatten ControlFlowExpression into Continue, Break, and Return.
* AST: unify identifiers and literals into the same AST type: OneToken
* AST: ControlFlowExpression uses TrailerFlags to optimize storage
space.
* astgen: support `var` as well as `const` locals, and support
explicitly typed locals. Corresponding Module and codegen code is not
implemented yet.
* astgen: support result locations.
* ZIR: add the following instructions (see the corresponding doc
comments for explanations of semantics):
- alloc
- alloc_inferred
- bitcast_result_ptr
- coerce_result_block_ptr
- coerce_result_ptr
- coerce_to_ptr_elem
- ensure_result_used
- ensure_result_non_error
- ret_ptr
- ret_type
- store
- param_type
* the skeleton structure for result locations is set up. It's looking
pretty clean so far.
* add compile error for unused result and compile error for discarding
errors.
* astgen: split builtin calls up to implemented manually, and implement
`@as`, `@bitCast` (and others) with respect to result locations.
* add CLI support for hex and raw object formats. They are not
supported by the self-hosted compiler yet, and emit errors.
* rename `--c` CLI to `-ofmt=[objectformat]` which can be any of the
object formats. Only ELF and C are supported so far. Also added missing
help to the help text.
* Remove hard tabs from C backend test cases. Shame on you Noam, you
are grounded, you should know better, etc. Bad boy.
* Delete C backend code and test case that relied on comptime_int
incorrectly making it all the way to codegen.
