Commit Graph

190 Commits

Author SHA1 Message Date
Paolo Teti 280012b1df Fix thumbv6m build (feature=c)
1. Avoid undefined references as:
   undefined reference to `__modsi3'
   undefined reference to `__umodsi3'

2. We can't remove assembly implementations that are not in the list
2018-02-16 17:34:01 +01:00
Paolo Teti e7bf03019c Collection of VFP intrinsics
Nothing really exciting here. LLVM on hard-float target use native instructions
for all listed VFP intrinsics and so resulting implementation is really trivial.

Implemented intrinsics:

 __gesf2vfp
 __gedf2vfp
 __gtsf2vfp
 __gtdf2vfp
 __ltsf2vfp
 __ltdf2vfp
 __nesf2vfp
 __nedf2vfp
 __eqsf2vfp
 __eqdf2vfp
 __extendsfdf2vfp
2018-02-11 23:46:56 +01:00
Paolo Teti 2cb290afa3 Fix __subsf3 and __subdf3 on x86
Be sure to do not mix hard-float and soft-float calls.
Disassembled code show exactly this.
So replace add with an explicit call to __addsf3/__adddf3

This seems the root cause of some sporadic failures.
2018-02-09 20:35:55 +01:00
Paolo Teti 306764b091 Fix issue extending f32::MIN/MAX to f64 and improve testcrate.
I was able to trigger an issue extending f32::MAX or f32::MIN to a f64.
Issue was not triggered by `testcrate` mainly because f32::MAX/MIN are
not in the list of special values to generate.

This PR fix the issue and improve `testcrate` adding MAX/MIN/MIN_POSITIVE
in the list of special values.
2018-02-09 17:23:16 +01:00
Paolo Teti 45f924ece5 Add generic conversion from a narrower to a wider FP type
Add `extend` module to implement conversion from a narrower to a wider
floating-point type.

This implementation is only intended to support *widening* operations.
Module to convert a *narrower* floating-point will be added in the future.
2018-02-08 18:20:45 +01:00
Paolo Teti 13db8bf436 Add support for sub*f3vfp and add*f3vfp
As done before for mul and div let's use extern "C" to generate `"aapcs"`
or `"aapcs-vfp"` depending on target configuration.
2018-02-04 18:34:31 +01:00
Paolo Teti 73884ae671 Fix __aeabi_fcmple and add test cases
`le` in __aeabi_fcmple means `less or equal`
2018-02-04 10:56:02 +01:00
Alex Crichton 2a13475197 Simplify how testing is done
All tests are moved to a separate crate in this repository to enable features by
default. Additionally the test generation is moved to a seprate build script and
simplified to reduce the amount of boilerplate needed per test.

Overall this should still be testing everything, just in a different location!
2018-01-31 11:32:20 -08:00
Paolo Teti f42b9e0bad __[mul/div]sf3vfp and __[mul/div]df3vfp only on ARM 2018-01-30 18:48:20 +01:00
Paolo Teti 8f018562ca Add support for mul[s/d]f3vfp and div[s/d]f3vfp
Here using `"C"` the compiler will use `"aapcs"` or `"aapcs-vfp"`
depending on target configuration.

Of course this translates in a call to `__aeabi_fdiv` / `__aeabi_fmul`
on non-HF targets.

On `eabi` targets with +vfpv2/vfpv3 LLVM generate:

   vmov	s0, r1
   vmov	s2, r0
   vdiv.f32	s0, s2, s0
   vmov	r0, s0
   bx	lr

On `eabihf` targets with +vfpv3-d16/d32/f32 +fp-only-sp LLVM generate:

  vdiv.f32	s0, s0, s1
  bx	lr

That's exactly what We need for [div/mul][s/d]f3vfp.S
2018-01-29 20:49:55 +01:00
Alex Crichton 7d5fb94560 Fix some typos/bugs with float comparison intrinsics
* I believe `__gtdf2` erroneously used `f32` instead of `f64`
* Most of these needed `#[arm_aeabi_alias]` to ensure they're correctly called
  through the alias
* Some existing aliases were corrected with the right names
2018-01-24 17:01:04 -08:00
whitequark 07b446a9ab comparesf2/comparedf2: fix a signedness bug and add tests. 2017-12-29 07:58:34 +00:00
whitequark 6adcc9e9cb comparesf2/comparedf2: use i32 instead of bool for return type.
Note that this changes semantics:
    pub extern "C" fn __eqsf2(a: f32, b: f32) -> bool {
        cmp(a, b).to_le_abi() != 0
    }

is not the same as

    pub extern "C" fn __eqsf2(a: f32, b: f32) -> i32 {
        cmp(a, b).to_le_abi()
    }

However, compiler-rt does the latter, so this is actually
an improvement.
2017-12-29 06:14:51 +00:00
whitequark f5d86476a8 Implement comparesf2/comparedf2 intrinsics. 2017-12-28 03:45:32 +00:00
Marco A L Barbosa f4edcf7b24 Use kernel user helpers for armv4t
Rename armv5te cfg to kernel_user_helpers and enable it for armv4t
2017-12-26 13:02:05 -02:00
Amanieu d'Antras e8ea848785 Fix argument order for __sync_val_compare_and_swap 2017-12-23 08:45:25 +01:00
Amanieu d'Antras 0fe7c79389 Replace inline asm with function calls in __kuser_cmpxchg and __kuser_memory_barrier 2017-12-20 01:57:05 +00:00
Alex Crichton a6f7dfd2fd Fix nightly CI
Currently we're getting lots of errors about duplicate lang items so deal with
this by `#[cfg_attr]`'ing off the lang item attribute in tests.
2017-12-08 08:19:28 -08:00
Scott McMurray ba750103a3 Another attempt at making MIPS happy
(I really don't understand how arithmetic makes it segfault...)
2017-11-25 07:00:26 -08:00
Scott McMurray bcc41a9b8d Autogenerate the add/sub tests 2017-11-25 06:25:19 -08:00
Scott McMurray ed89a17f25 Make them all `pub` 2017-11-25 05:53:53 -08:00
Scott McMurray 665f268872 Tweak addo & subo to try and fix MIPS 2017-11-25 05:26:24 -08:00
Scott McMurray 5e71218390 Implement all the 128-bit operator lang items from rust PR 46093 2017-11-25 04:21:05 -08:00
Dan Gohman a6ecd1a73f Add "volatile" and "memory" clobber to asm! that doesn't fall through.
Use the "volatile" option and the "memory" clobber on inline asm that does
things like return directly, to reduce the chances of compilers rearranging
the code.
2017-11-15 12:49:10 -08:00
Oliver Geller 8bb30026c7 Implement divsf3 and divdf3 2017-11-13 20:22:27 -05:00
Oliver Geller 897048543f Implement mulsf3 and muldf3 2017-11-08 17:36:34 -05:00
Alex Crichton 45cd956acc Prepare this crate for more wasm32 compatibility
This commit prepares the build script for a wasm32 target that doesn't use
Emcripten, notably forcing the `mem` feature to get activated and forcibly
ignoring the `c` feature, even if activated, for the wasm32 target.
2017-11-01 19:29:41 -07:00
Amanieu d'Antras 73e38dcf2f Add atomic support for pre-ARMv6 on Linux 2017-10-05 12:44:12 +01:00
est31 c781759498 Partially revert a272d753f5
This partially reverts commit "Convert float_to_int! into a function"
2017-09-29 02:20:27 +02:00
est31 a20840262e Partially revert 482d98318f
This partially reverts "Convert int_to_float! to a function".
2017-09-29 02:19:40 +02:00
Matt Ickstadt a40cc6a12d Don't compile probestack functions during testing 2017-09-15 18:13:06 -05:00
Matt Ickstadt b3679bcfba Implement x86 chkstk in "rust" 2017-09-15 18:04:59 -05:00
est31 0cd476220b Remove duplication by adding a macro 2017-09-14 17:39:25 +02:00
est31 3efae7f7d9 Convert add! to a function 2017-09-14 17:33:44 +02:00
est31 482d98318f Convert int_to_float! to a function 2017-09-14 16:32:50 +02:00
est31 ff63f7b80f Convert float_to_int! into a function 2017-09-14 14:59:32 +02:00
est31 a272d753f5 Don't use the Wrapping wrapper in float addition
Inspired by a patch by mattico.
2017-09-14 02:08:28 +02:00
est31 72ed4c8bce Don't use a macro for pow calculation 2017-09-14 01:59:02 +02:00
est31 8313cec597 Extend the Float trait by some constants and supertraits 2017-09-14 01:57:52 +02:00
est31 2c1d7dccc1 Use the newly added ONE constant in float addition 2017-09-14 00:10:16 +02:00
est31 46cfa05650 Introduce a float_impl! macro to avoid duplication 2017-09-13 22:44:56 +02:00
est31 9bdedec38e Refactor float builtins to use associated consts 2017-09-13 22:09:52 +02:00
est31 c9a261895e Refactor int builtins to use associated consts 2017-09-13 22:09:31 +02:00
Tim Neumann c138713df1 Avoid memcpy references in unoptimized code 2017-07-22 23:10:30 +02:00
Oliver Middleton 064452423a Don't include custom chkstk on MSVC
MSVC includes its own __chkstk so these aren't used.
2017-07-12 22:40:49 +01:00
Alex Crichton 91eaa85902 Don't mangle probes all the time 2017-07-07 20:35:14 -07:00
Alex Crichton f9f6bd0589 Tweak definition of probestack functions
It looks like the old `__rust_probestack` routine is incompatible with newer
linux kernels. My best guess for this is that the kernel's auto-growth logic is
failing to trigger, causing what looks like a legitimate segfault to get
delivered. My best guess for why *that's* happening is that the faulting address
is below `%rsp`, whereas previously all faulting stack addresses were above
`%rsp`. The probestack routine does not modify `%rsp` as it's probing the stack,
and presumably newer kernels are interpreting this as a legitimate violation.

This commit tweaks the probestack routine to instead update `%rsp` incrementally
as probing happens. The ABI of the function, however, requires that `%rsp`
isn't changed as part of the function so it's restored at the end to the
previous value.
2017-07-07 10:16:03 -07:00
Alex Crichton 7ccf8408d0 Add `__rust_probestack` intrinsic
Will be required for rust-lang/rust#42816
2017-07-06 06:58:32 -07:00
Alex Crichton 238647af80 Fix unused imports on iOS 2017-07-03 19:11:34 -07:00
Alex Crichton 681aaa914d Use the Rust implementation of udivsi3 on ARM
Although compiler-rt presumably has a more optimized implementation written in
assembly, it appears buggy for whatever reason, causing #173.

For now let's see if integration into rust-lang/rust will work with the
Rust-defined implementation!
2017-07-03 09:48:11 -07:00