1083 Commits

Author SHA1 Message Date
emekoi
6bc5b07e3e
try to resolve TargetSubSystemAuto to actual subsystem 2019-05-29 16:55:01 -04:00
emekoi
fb5dc28921
added subsystem to builtin.zig 2019-05-29 16:54:59 -04:00
Andrew Kelley
b66438eb80
no "use of undeclared identifer" in dead comptime branches 2019-05-28 18:19:27 -04:00
Andrew Kelley
9d16839420
fix invalid LLVM IR generated for ?*void const casts
closes #2578
2019-05-28 16:11:36 -04:00
LemonBoy
e2c2263434 Move __zig_fail_unwrap locals on stack 2019-05-28 13:02:45 -04:00
emekoi
3f302594b8 respect subsystem flag in all cases 2019-05-27 22:15:33 -04:00
Andrew Kelley
f924fbddcf
Merge pull request #2552 from Sahnvour/issue-2543
gen-h: do not output visibility macros when the build is static
2019-05-27 21:51:34 -04:00
Andrew Kelley
2c0280ba08
improve the stack check CLI options
See #2526
2019-05-27 20:59:19 -04:00
Andrew Kelley
269a53b6af
introduce @hasDecl builtin function
closes #1439
2019-05-26 16:21:03 -04:00
Sahnvour
99ee0608f7 gen-h: do not output visibility macros when the build is static 2019-05-25 14:17:59 +02:00
LemonBoy
0a3aec020a Fix load/store of non-integer fields in packed struct 2019-05-18 19:59:47 -04:00
Andrew Kelley
80983ca1ca
fixups to the previous commit 2019-05-16 16:37:58 -04:00
Shawn Landden
1fdb24827f
breaking changes to all bit manipulation intrinsics
* `@clz`, `@ctz`, `@popCount`, `@bswap`, `@bitreverse` now
   have a type parameter
 * rename @bitreverse to @bitReverse
 * rename @bswap to @byteSwap

Closes #2119
Closes #2120
2019-05-16 16:37:58 -04:00
Andrew Kelley
81e960eb74
improvements to build-lib use case of WebAssembly
* build-exe does include the startup code that supplies _start for the
   wasm32-freestanding target. Previously this did not occur because
   of logic excluding "freestanding".
 * build-lib for wasm32-freestanding target gets linked by LLD. To avoid
   infinite recursion, compiler_rt and zig libc are built as objects
   rather than libraries.
   - no "lib" prefix and ".wasm" extension instead of ".a". Rather than
   build-lib foo.zig producing "libfoo.a", now it produces "foo.wasm".
 * go back to using `.o` extension for webassembly objects
 * zig libc only provides _start symbol for wasm when linking libc.
2019-05-16 13:56:56 -04:00
Andrew Kelley
6b36b756eb
fix static builds of zig from requiring c compiler
to be installed when linking libc.

When zig links against libc, it requires a dynamic linker path.
Usually this can be determined based on the architecture and operating
system components of the target. However on some systems this is not
correct; because of this zig checks its own dynamic linker.

When zig is statically linked, this information is not available, and so
it resorts to using cc -print-filename=foo to find the dynamic linker
path.

Before this commit, Zig incorrectly exited with an error if there was
no c compiler installed. Now, Zig falls back to the dynamic linker
determined based on the arch and os when no C compiler can be found.
2019-05-15 21:50:56 -04:00
Andrew Kelley
df4f77024e
else value when switching on error set has
optional capture value which is subset.

see #769
2019-05-14 18:06:57 -04:00
LemonBoy
6536b409df Don't emit DW_TAG_lexical_block for VarDecls 2019-05-14 14:34:49 -04:00
Andrew Kelley
7330a6102f
cache_add_dep_file: handle ErrorFileNotFound specially 2019-05-13 12:15:55 -04:00
LemonBoy
a038ef3570 Assemble asm files using CC
Stuffing all the files together and compiling the resulting blob with
the main program is a terrible idea.

Some files, namely the .S ones, must be run trough the C preprocessor
before assembling them (#2437).

Beside that the aggregate may be mis-compiled due to the presence of
some flags that affect the following code.

For example let's consider two files, a.s and b.s

a.s
```
fn1:
    ret
.data
data1:
    .word 0
```

b.s
```
fn2:
    ret
```

Now, fn1 and fn2 will be both placed in the .text section as intended if
the two files are compiled separately. But if we merge them the `.data`
flag ends up placing fn2 in the wrong section!

This fixes a nasty crash where musl's memset ended up in the
non-executable data segment, leading to too many hours of
head-scratching.
2019-05-13 16:41:07 +02:00
Andrew Kelley
a7346ea49f fix build on macOS
Sadly due to a workaround for LLD linker limitations on macOS
we cannot put libuserland into an .a file; instead we have to use object
files. Again due to linker limitations, bundling compiler_rt.o into
another relocatable object also doesn't work. So we're left with
disabling stack probing on macOS for the stage1 self-hosted code.

These workarounds could all be removed if the macos support in the LLD
linker improved, or if Zig project had its own linker that did not have
these issues.
2019-05-08 22:45:49 -04:00
Andrew Kelley
9bbd71c9ab
add --bundle-compiler-rt function to link options
and use it when building libuserland.a

The self-hosted part of stage1 relies on zig's compiler-rt, and so we
include it in libuserland.a.

This should potentially be the default, but for now it's behind a linker
option.

self-hosted translate-c: small progress on translating functions.
2019-05-08 20:51:49 -04:00
Andrew Kelley
0099583bd3
C pointers support .? operator
see #1967
2019-05-08 17:39:00 -04:00
Andrew Kelley
50bbb34594
C pointers support null
See #1967
2019-05-08 16:06:34 -04:00
LemonBoy
be7cacfbbe Implement stack probes for x86/x86_64
Enabled on non-Windows systems only since it already requires stack
probes.
2019-05-08 12:36:54 -04:00
Andrew Kelley
bd9c629c4c
always respect threadlocal for variables with external linkage
Previously if you had, for example:

extern "c" threadlocal var errno: c_int;

This would turn errno into a normal variable for --single-threaded
builds. However for variables with external linkage, there is an ABI
to uphold.

This is needed to make errno work for DragonFly BSD. See #2381.
2019-05-03 14:39:54 -04:00
Andrew Kelley
3552180143
optimize @memset with undefined
When using `@memset` to set bytes to `undefined`, Zig notices this
case and does a single Valgrind client request rather than N.

Speeds up all allocators in safe modes.

Closes #2388
2019-05-03 01:25:03 -04:00
Andrew Kelley
e1bf74fca3
translate-c: put -x c back in there, it's necessary 2019-04-25 00:06:58 -04:00
Andrew Kelley
712274997e
translate-c: unify API for self-hosted and C++ translate-c
See #1964
2019-04-25 00:06:57 -04:00
Andrew Kelley
976080462c
translate-c: a little closer to self-hosted implementation 2019-04-25 00:06:54 -04:00
Shawn Landden
8ef7f6febb remove Shebang (#!) support
Closes:  #2165
2019-04-24 23:34:19 -04:00
Andrew Kelley
89763c9a0d
stage1 is now a hybrid of C++ and Zig
This modifies the build process of Zig to put all of the source files
into libcompiler.a, except main.cpp and userland.cpp.

Next, the build process links main.cpp, userland.cpp, and libcompiler.a
into zig1. userland.cpp is a shim for functions that will later be
replaced with self-hosted implementations.

Next, the build process uses zig1 to build src-self-hosted/stage1.zig
into libuserland.a, which does not depend on any of the things that
are shimmed in userland.cpp, such as translate-c.

Finally, the build process re-links main.cpp and libcompiler.a, except
with libuserland.a instead of userland.cpp. Now the shims are replaced
with .zig code. This provides all of the Zig standard library to the
stage1 C++ compiler, and enables us to move certain things to userland,
such as translate-c.

As a proof of concept I have made the `zig zen` command use text defined
in userland. I added `zig translate-c-2` which is a work-in-progress
reimplementation of translate-c in userland, which currently calls
`std.debug.panic("unimplemented")` and you can see the stack trace makes
it all the way back into the C++ main() function (Thanks LemonBoy for
improving that!).

This could potentially let us move other things into userland, such as
hashing algorithms, the entire cache system, .d file parsing, pretty
much anything that libuserland.a itself doesn't need to depend on.

This can also let us have `zig fmt` in stage1 without the overhead
of child process execution, and without the initial compilation delay
before it gets cached.

See #1964
2019-04-16 19:12:20 -04:00
Andrew Kelley
4e2f6ebf39
freestanding target adds -ffrestanding to cc parameters
closes #2287
2019-04-16 12:06:14 -04:00
Andrew Kelley
579dd74114
fix Debug mode when error return tracing is off
Previously the code for generating a panic crash expected
one of the parameters to be the error return trace. Now
it does not expect that parameter when g->have_err_ret_tracing
is false.

Closes #2276
2019-04-15 20:17:06 -04:00
Shritesh Bhattarai
a0d2185199 wasm: add wasm-import-module attr to extern 2019-04-15 17:00:04 -05:00
Andrew Kelley
27253f09b6
organize how the single threaded option is passed around 2019-04-14 11:01:01 -04:00
Shritesh Bhattarai
63f2e96eea wasm: use .wasm ext for exe 2019-04-12 13:17:59 -04:00
Shritesh Bhattarai
5f8dbcac06 wasm: disable error ret tracing 2019-04-11 16:37:40 -04:00
Andrew Kelley
a71bfc249d compiler-rt: better way to do the ABI required on Windows
This removes the compiler_rt.setXmm0 hack. Instead, for
the functions that use i128 or u128 in their parameter and
return types, we use `@Vector(2, u64)` which generates
the LLVM IR `<2 x i64>` type that matches what Clang
generates for `typedef int ti_int __attribute__ ((mode (TI)))`
when targeting Windows x86_64.
2019-04-10 18:47:14 -04:00
Andrew Kelley
1dc6751721
fix NaN comparing equal to itself
This was broken both in comptime code and in runtime code.

closes #1174
2019-04-04 22:07:15 -04:00
Andrew Kelley
be0f656c21
fix @divFloor returning incorrect value and add __modti3
Closes #2152
See #1290
2019-04-04 15:45:37 -04:00
Andrew Kelley
e4d595a8ba
fix thread local variables for non- position independent code
This fixes comes thanks to Rich Felker from the musl libc project,
who gave me this crucial information:

"to satisfy the abi, your init code has to write the same value
to that memory location as the value passed to the [arch_prctl]
syscall"

This commit also changes the rules for when to build statically
by default. When building objects and static libraries, position
independent code is disabled if no libraries will be dynamically
linked and the target does not require position independent code.

closes #2063
2019-04-04 01:08:26 -04:00
Andrew Kelley
d577dde636
passing all tests 2019-04-02 18:31:19 -04:00
Andrew Kelley
4c38a8cce1
more regression fixes. empty test passes again 2019-04-02 18:31:19 -04:00
Andrew Kelley
ddb8aa73f5
more regression fixes 2019-04-02 18:31:18 -04:00
Andrew Kelley
d3f2fe2cef
remove the lazy value stuff
let's try to keep this branch to solving one problem at a time
2019-04-02 18:31:18 -04:00
Andrew Kelley
3dc8448680
introduce lazy values
but I think it's a bad idea, so I'm going to back out the change
2019-04-02 18:31:18 -04:00
Andrew Kelley
ee5064c053
decouple llvm types from zig types
Not tested yet, but it builds.

This closes #761, and lays the groundwork for fixing the remaining
false positive "foo depends on itself" bugs, such as #624.

It also lays the groundwork for implementing ability to specify
alignment of fields (#1512).
2019-04-02 18:31:17 -04:00
Shawn Landden
65e234adfd fix build on arm64 2019-03-27 01:14:29 +00:00
Andrew Kelley
5eaead6a56
implement allowzero pointer attribute
closes #1953

only needed for freestanding targets.

also adds safety for `@intToPtr` when the address is zero.
2019-03-25 12:55:45 -04:00
Andrew Kelley
d0551db5cd
introduce the enum literal type
see #683
2019-03-24 00:44:18 -04:00