Amanieu d'Antras
38ff4126b6
Add missing inline asm clobbers for x86 and x86_64
2016-09-04 02:13:46 -04:00
Amanieu d'Antras
fb9acb73f3
Use raw pointers instead of references to avoid aliasing issues
2016-09-04 02:13:46 -04:00
whitequark
c6ece101e2
Expose fringe::STACK_ALIGNMENT, and make OwnedStack respect it.
2016-09-02 19:44:34 -04:00
whitequark
a1ea208652
arch/x86_64: hack to work around ld64 shortcomings on OS X.
...
fix #35 , close #36
2016-08-31 20:25:00 -04:00
whitequark
a733290359
arch: bring back clobbers for input operands.
...
This reverts a part of 365e40b. While it is not legal to clobber
the output register, it is legal and necessary to do this for inputs,
since we do not preserve them, and LLVM could have decided to
reuse them.
Thanks to @Amanieu for discovering this.
2016-08-31 14:17:54 -04:00
whitequark
248d7b16b5
arch/or1k: fix typo.
2016-08-31 14:17:54 -04:00
whitequark
2d8cefcabc
Do not simultaneously clobber registers passed into assembly.
...
This is not actually legal (although the restriction is not
documented anywhere), and is not caught by LLVM unless the codegen
option -verify-machineinstrs is specified. This option is now used
on Travis.
While not legal, this does not seem to result in invalid output
(although it creates an unnecessary spill); however, under extremely
specific circumstances (e.g. when a register scavenger is run under
severe pressure), this will result in a codegen crash, which is
how I found it.
2016-08-30 12:20:34 -04:00
edef
f21b8dc936
Update the license headers for MIT/Apache
2016-08-20 23:45:01 +02:00
whitequark
e0ad79ea0c
Add an OR1K port.
2016-08-19 15:12:42 +02:00
whitequark
145c18125a
Explain how trampolines work.
2016-08-13 13:38:04 +02:00
whitequark
b79e7c0a9b
Rename Stack::top() to Stack::base(), which is correct.
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Fixes #25 .
2016-08-13 13:38:04 +02:00
whitequark
7d5075edc2
Add more examples to README.
...
This also renames some functions for a mild increase in backtrace
clarity.
2016-08-13 13:38:04 +02:00
whitequark
f34ddc6805
Don't use core::intrinsics.
...
The core::intrinsics::unreachable() we used at the end of every naked
function is essentially pointless, as #[naked] implies that intrinsic
at the end of the function. rustc currently does not implement that
behavior (rust-lang/rust#32487 ), but it is a bug. On top of that,
anything except a single asm!() in naked functions is likely to be
disallowed in the future (rust-lang/rust#32490 ).
A nice side effect is that we avoid the core_intrinsics feature,
which will be never stabilized, though neither asm nor
naked_functions are likely to be stabilized soon.
2016-08-13 13:38:04 +02:00
whitequark
23cf17865d
Remove workaround for rust-lang/rust#25544 .
2016-08-13 13:38:04 +02:00
whitequark
892a7696ec
Allow unwinding to propagate across a context swap.
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The main purpose of this is having nice backtraces in gdb, although
it also slightly simplifies poisoning state of the API consumers
after a panic.
2016-08-13 13:38:04 +02:00
whitequark
40fbfdde0c
Kill impl StackPointer.
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That was a silly idea for a silly abstraction, and it brought no
improvement, only confusion. So, revert it.
2016-08-13 13:38:04 +02:00
edef
8c761d944f
Fix Windows x64 ABI
2016-07-17 16:57:23 -04:00
John Ericson
75ca6f66e1
Move x86 trampoline to naked function
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Close #19
2016-07-16 16:39:19 -04:00
John Ericson
1ea4b01eda
Use mostly the same registers for consistency
...
The exception to this is %eax is used not %edi on x86 because its
caller-save
2016-07-16 16:39:14 -04:00
whitequark
cbe136b762
Completely rework fringe::Context and fringe::arch.
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The new design concerns itself with one thing and exactly one thing:
passing values back and forth with an extern "C" function.
This allows to simplify fringe::arch into a single primitive, swap.
Close #21
2016-07-16 15:04:15 -04:00
edef
6284a22caa
add fpsr, eflags for good measure
...
courtesy of @whitequark
2016-04-16 07:41:00 +02:00
John Ericson
35fb046fb5
Factor out common code between x86 and x86_64
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Fix #17
2016-04-14 13:37:15 +02:00
edef
daece1a8d3
Registers::{swap2 => swap}, to match Context::swap
2016-04-03 19:56:15 +02:00
edef
a50e6771b4
coerce rust_trampoline to a function pointer properly
2016-04-03 12:00:21 +02:00
edef
644cd81f9e
fix parameter passing to arch/x86_64/swap.s
2016-04-03 11:59:14 +02:00
edef
b986931817
remove copyright years
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They're obnoxious to update, and I'm told they have no legal value.
2016-03-22 08:25:23 +01:00
edef
709dad1c4a
add Context::swap2, to allow distinct save/restore contexts
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Fix #5
Context::swap is now implemented in terms of Context::swap2, and it
might make sense to remove Context::swap entirely at some point.
2016-03-22 07:50:50 +01:00
edef
2b23083455
get rid of some minor warnings
2016-03-22 07:35:25 +01:00
edef
bb2b92bf6b
remove feature attributes for stable stuff
2016-03-16 00:14:09 +01:00
edef
cd4fe1ecc8
remove obsolete support for Rust stack limits
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rustc removed these in 7a3fdfbf674a08b7f6fd32c9124e52924a2f9a1c, and
this removes a Linux-specific TLS slot from our code.
2016-01-04 03:46:07 +01:00
John Ericson
a1f286bdaf
don't drop uninitialised memory when pushing to stack
2015-08-26 20:42:33 +02:00
John Ericson
96a31d2443
remove stray import
2015-08-26 20:41:12 +02:00
John Ericson
5411f10460
use Void to ensure closure diverges
2015-08-26 00:51:18 +02:00
edef
e290a8bbaf
remove `extern crate core` and prelude imports
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the latest Rust nightly makes this unnecessary
2015-08-26 00:19:53 +02:00
edef
418c53797e
x86 support
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ref #1
2015-04-16 13:15:46 -04:00
edef
52325b07c0
comment fix: it's 8ns *faster*
2015-04-16 12:21:39 -04:00
edef
a1e4c2b745
add Syntastic ASM lint hints
2015-04-16 11:56:45 -04:00
edef
d627f0d725
big rename — we're libfringe now
2015-04-16 08:11:12 -04:00
edef
0dd6c8bc32
pass STACK_ALIGN through without exposing it
2015-04-16 07:24:15 -04:00
edef
7adb9e7381
implement Debug for all components of Context
2015-04-16 07:24:07 -04:00
edef
519d86ca4c
implement Send where applicable
2015-04-16 07:23:57 -04:00
edef
7271fe1724
there is no point in Registers being Copy + Clone
2015-04-16 07:23:56 -04:00
edef
f7ab28de4b
move all the common arch stuff into a module of its own
2015-04-16 06:34:03 -04:00
edef
b7624aa49a
uintptr_t is pointless when usize is the same anyway
2015-04-16 06:20:46 -04:00
edef
997a4a7765
move architecture specifics into arch directory
2015-04-16 06:17:03 -04:00