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919 Commits

Author SHA1 Message Date
Brian Anderson
ba8f369f89 rt: Reduce the mac red zone to 2K 2011-12-20 14:24:13 -08:00
Brian Anderson
2e230b1cf9 rt: Reduce the linux red zone to 2K 2011-12-20 14:02:59 -08:00
Brian Anderson
6443a7b513 rt: Do fewer stack canary checks 2011-12-20 13:54:47 -08:00
Brian Anderson
93fef2e113 rt: Parenthesize the red zone macros 2011-12-20 11:57:22 -08:00
Brian Anderson
784713ec68 rt: Add a canary value to the end of every stack 
Check it on upcall entry and exit, and on stack deletion
 2011-12-20 11:48:47 -08:00
Brian Anderson
56ec9cb278 rt: Run yet more task_start_wrapper cleanup on the C stack 2011-12-20 10:29:40 -08:00
Brian Anderson
25f7c844df rt: Don't reuse stack segments when they are not big enough 2011-12-19 22:47:28 -08:00
Brian Anderson
05bf105c90 rt: Rename asm_call_on_stack to __morestack 
Newer gdb's will backtrace through functions named __morestack even
if they change the stack.
 2011-12-19 22:05:40 -08:00
Brian Anderson
edf6e1ec0e rt: Zero the bottom frame's return address and base pointer 
My reading of libunwind leads me to believe this is expected.

Closes #1322
 2011-12-19 18:47:39 -08:00
Brian Anderson
1bfc4e2e6c rt: Save and restore %rax/%eax in __morestack 
This doesn't matter now since we use an out pointer for return
values but it's sure to show up mysteriously someday.
 2011-12-19 18:16:21 -08:00
Brian Anderson
c3569abb8c rt: Remove some unused stack from i386/morestack.S 2011-12-19 18:16:19 -08:00
Brian Anderson
d2e7336a01 rt: Remove unused saves from __morestack 2011-12-19 16:24:10 -08:00
Brian Anderson
50dc80f617 rt: Give upcall_new_stack the same convention as other upcalls 2011-12-19 16:24:10 -08:00
Brian Anderson
bedcaad97e rt: Give upcall_del_stack the same convention as other upcalls 2011-12-19 16:24:10 -08:00
Brian Anderson
bd6b80c972 rt: Get rid of the rethrow in upcall_fail 
Throwing in upcall_fail ends up running lots of code in the red zone. To avoid
it we have the personality function figure out which stack it's on and switch
as needed.
 2011-12-18 17:17:31 -08:00
Brian Anderson
c73eb8ff51 rt: Create different stack-switching paths for upcalls and shims 
Shims need to play with the stack limit, upcalls don't. Only one upcall,
upcall_fail is allowed to catch, and we need a find a way to get rid of that
catch as well because it results in _Unwind_Resume running off the end of the
Rust stack.
 2011-12-18 16:17:55 -08:00
Brian Anderson
f57fd8de1f rt: Run the cycle collector on the C stack 2011-12-18 15:23:44 -08:00
Brian Anderson
74d5faa86e rt: Give each platform its own red zone definition 2011-12-18 15:23:41 -08:00
Brian Anderson
762d7e43a6 rt: Trim the red zone to 20k on all platforms 2011-12-18 15:22:56 -08:00
Brian Anderson
3fa930f598 rt: Remove a bogus FIXME from ~rust_task 2011-12-18 02:09:41 -08:00
Brian Anderson
1a1fdf34b1 rt: Add lots of documentation to __morestack 2011-12-18 02:02:35 -08:00
Brian Anderson
7359fa422b Revert "rt: Turn on big stacks again. Unwinding still doesn't always succeed on mac" 
This reverts commit 68f4849f0f.
 2011-12-18 00:42:46 -08:00
Brian Anderson
68f4849f0f rt: Turn on big stacks again. Unwinding still doesn't always succeed on mac 2011-12-17 17:54:43 -08:00
Brian Anderson
fe683dfb80 rt: Get rid of the valgrind guard bytes at the end of the stack 
Preventing us from writing beyond our allocations is _what valgrind does_,
so telling valgrind not to let us write to the end of the stack isn't
buying anything.
 2011-12-17 16:46:50 -08:00
Brian Anderson
471b4d6e58 rt: Use a DWARF CFI scheme that works on mac in __morestack 2011-12-17 14:10:44 -08:00
Brian Anderson
7da8ab8fab rt: Turn on stack alignment checks for mac 2011-12-17 14:10:40 -08:00
Brian Anderson
4ac345939c rt: Cache an extra stack segment to avoid bad behavior at stack boundaries 2011-12-17 13:45:38 -08:00
Brian Anderson
0ed5117a9d rt: Set the default stack size to 768 bytes. Double on each alloc 2011-12-17 13:45:38 -08:00
Brian Anderson
b5b2ac0ec4 rt: Make 32-bit morestack compatible with fastcc 2011-12-16 18:18:43 -08:00
Brian Anderson
7d51961b6f rt: Fix saved address of unwinding %rsp in __morestack 
I haven't thought too deeply about this, but I think I was telling the
unwinder to use the stack pointer for the wrong frame when unwinding. Not sure
how that could have worked at all, but this results in the correct alignment
for cleanups.
 2011-12-16 18:18:43 -08:00
Brian Anderson
9d70c1949e rt: Fix alignment of the call to upcall_del_stack in __morestack 2011-12-16 18:18:43 -08:00
Brian Anderson
23df4de86d rt: Fix alignment of new stack segments 2011-12-16 18:18:43 -08:00
Brian Anderson
ab4f35c1f1 rt: Only call check_stack_alignment on linux 2011-12-16 18:18:43 -08:00
Brian Anderson
121c420184 rt: Insert stack alignment checks into upcalls 2011-12-16 18:18:43 -08:00
Elly Jones
89e880d613 std: file_is_dir -> path_is_dir, add path_exists 2011-12-16 17:37:21 -05:00
Niko Matsakis
88818334b7 update to not look at descs[], which is not necessarily valid 
if the input is a statically allocated type_desc
 2011-12-16 08:06:45 -08:00
Niko Matsakis
1e3259e119 massive refactor of how closures work 2011-12-15 13:44:06 -08:00
Niko Matsakis
35fe86dab7 export upcall_clone_type_desc 2011-12-14 14:32:25 -08:00
Niko Matsakis
f512e67fb9 clone type desc into exchange heap 2011-12-14 14:32:24 -08:00
Niko Matsakis
6a8cb704d9 get basic code generation working, clone type descs for lambda[send] 2011-12-14 14:32:20 -08:00
Brian Anderson
f0254e1e0d rt: Add a FIXME to 32-bit __morestack about trashing %eax 2011-12-13 19:13:17 -08:00
Brian Anderson
f332643e7f rt: Use %ecx instead of %eax during the second half of __morestack 
If Rust code made use of return values then using %eax here would clobber it
 2011-12-13 18:26:56 -08:00
Brian Anderson
32087f5c2a rt: Don't clobber fastcc argument registers in __morestack 2011-12-13 15:54:14 -08:00
Niko Matsakis
a98dec035f fix track alloc code 2011-12-12 18:25:17 -08:00
Brian Anderson
1c1bc2f1cd rt: Remove some duplicated code from 64-bit __morestack 2011-12-12 16:58:21 -08:00
Brian Anderson
887d970fee rt: Make unwinding through __morestack work on mac 
Had to bump the min stack size in some of the tests from 256 bytes
to 1024 bytes. Not sure why yet.
 2011-12-12 16:15:29 -08:00
Brian Anderson
3e32f6623c rt: Write CFI instructions that (might) work on mac in __morestack 
The DW_CFA_val_offset_sf instruction doesn't seem to work on mac,
even after implementing it in the llvm-mc assembler, so now
I'm looking for a different way to communicate the stack pointer
adjustment to the unwinder.
 2011-12-12 16:14:17 -08:00
Brian Anderson
7a8e73662d rt: Make unwinding through __morestack work on mac 
Had to bump the min stack size in some of the tests from 256 bytes
to 1024 bytes. Not sure why yet.
 2011-12-11 18:49:04 -08:00
Brian Anderson
7bc34f63d8 rt: Write CFI instructions that (might) work on mac in __morestack 
The DW_CFA_val_offset_sf instruction doesn't seem to work on mac,
even after implementing it in the llvm-mc assembler, so now
I'm looking for a different way to communicate the stack pointer
adjustment to the unwinder.
 2011-12-11 16:32:36 -08:00
Brian Anderson
b73caec3ce rt: Call upcall_fail on the C stack 2011-12-11 14:35:18 -08:00
Brian Anderson
5cd08586f6 rt: Add DWARF CFI info to asm_call_on_stack 
This will allow the unwinder to unwind this function so we can call
upcall_fail on the C stack.
 2011-12-11 14:35:09 -08:00
Brian Anderson
4699b6865f build: Use llvm-mc as our assembler 
LLVM's assembler understands .cfi pseudo-ops on the mac, which we need in
order to generate frames that can be DWARF-unwound
 2011-12-10 18:51:21 -08:00
Brian Anderson
9e6ff44d93 rt: Make __morestack work on win32 2011-12-08 16:47:33 -08:00
Brian Anderson
94b0fee6f1 rt: Reorganize and add documentation for rust_upcall.cpp 2011-12-07 18:50:23 -08:00
Brian Anderson
31fe5d0bd8 rt: Run most upcalls on the C stack 2011-12-07 18:50:23 -08:00
Brian Anderson
81f932e7d7 rt: Fix alignment of stacks generated by __morestack 2011-12-07 14:06:46 -08:00
Brian Anderson
9656ceac60 rt: Put 16 guard bytes at the end of the stack 2011-12-06 22:35:42 -08:00
Brian Anderson
5d1a1dc420 rt: Rename stk_seg.limit to stk_seg.end 
rust_task is using the word limit it two ways, so one has to change.
 2011-12-06 21:45:53 -08:00
Brian Anderson
3d7b89bc4d rt: Reorganize rust_upcall.cpp a bit 2011-12-06 21:44:19 -08:00
Brian Anderson
00636e3155 rt: Convert log_type and cmp_type upcalls to shim form 2011-12-06 21:44:19 -08:00
Brian Anderson
c11d0b0aa0 rt: Move upcall_cmp_type/upcall_log_type to rust_upcall.cpp 2011-12-06 21:44:18 -08:00
Niko Matsakis
9b7347dd96 modify upcalls to take structs as args 2011-12-06 21:44:18 -08:00
Brian Anderson
9a738fd61d rt: Various tweaks to make __morestack unwinding work on linux 
When unwinding through __morestack the stack limit in the TLS is invalidated
and must be reset. Instead of actually landing at __morestack we're
just going to make all our Rust landing pads call upcall_reset_stack_limit,
which will find the stack segment that corresponds to the current stack
pointer and put the limit in the TLS.

Also massively expand the stack segment red zone to make more room for the
dynamic linker. Will fix in the future.
 2011-12-06 16:32:41 -08:00
Austin Seipp
b513a5a500 Make valgrind usage more consistent and less error prone. 
I was still having issues with the build system somehow getting confused
as to which set of valgrind headers to use when compiling rt.

This commit moves all the valgrind headers into their own directory
under rt and makes the usage more consistent. The compiler is now passed
the -DNVALGRIND flag when valgrind is not installed, as opposed to
passing -DHAVE_VALGRIND.

We also pass -I src/rt to the compiler when building rt so you can more
easily import what you want. I also cleaned up some erroneous #includes
along the way.

It should be safe to always just import the local valgrind headers and use
them without question. NVALGRIND turns the operations to no-ops when it
is active, and the build and tests run cleanly with or without.
 2011-12-06 01:15:29 -06:00
Brian Anderson
58844aee42 rt: Make stack unwinding work more correctly with stack growth 2011-12-05 17:42:58 -08:00
Brian Anderson
a731f165df test: Test hitting the dynamic linker in the red zone 2011-12-05 17:20:59 -08:00
Brian Anderson
3b8bfaf534 rt: Use an out pointer for rust_new_stack 
upcall_call_shim_on_c_stack does not handle return values
 2011-12-05 17:11:35 -08:00
Brian Anderson
98cd96ce96 test: Add more tests for stack growth 2011-12-05 14:44:15 -08:00
Brian Anderson
1720bc2e81 rt: Unwind through __morestack on 32-bit linux 2011-12-05 12:10:55 -08:00
Brian Anderson
52d7dc5e0a rt: Update 32-bit __morestack for recent LLVM changes 2011-12-04 20:40:34 -08:00
Brian Anderson
292663b8ef rt: Implement 32-bit __morestack for mac 2011-12-02 17:44:23 -08:00
Brian Anderson
c254936f32 rt: Fix __morestack prologue on x86_64 mac 2011-12-02 15:32:51 -08:00
Brian Anderson
691b517fb9 rt: Fix 64-bit linux __morestack 2011-12-01 20:56:05 -08:00
Brian Anderson
3e5b314c0b rt: Implement __morestack for 64-bit mac. Doesn't unwind yet 2011-12-01 19:44:14 -08:00
Brian Anderson
8bf3d85b9d rt: Implement record_sp for 64-bit mac 2011-12-01 19:44:13 -08:00
Brian Anderson
1974cf9a81 rt: Move RED_ZONE_SIZE to rust_task.cpp 2011-12-01 15:50:00 -08:00
Brian Anderson
249f017bf2 rt: Add FIXME's about future changes to LLVM's __morestack impl 2011-12-01 15:33:15 -08:00
Brian Anderson
6da1a3fcd6 rt: Refactor record_sp into task::record_stack_limit 2011-12-01 15:26:42 -08:00
Brian Anderson
7476a39e47 stdlib: Implement some preliminary libuv bindings 
std::uv is intended to be low-level, exactly mirroring the C API.
Difficult to continue the implementation now without scheduler
improvements.
 2011-12-01 10:24:21 -08:00
Brian Anderson
f2de42c39a rt: Reorganize stack growth code 2011-11-30 20:31:33 -08:00
Brian Anderson
dd48a1af58 rt: Remove redundant defs of RUST_DEL_STACK 2011-11-30 20:31:33 -08:00
Brian Anderson
e6ef4d929c rt: Remove the stack pointer field of stk_seg 2011-11-30 20:31:33 -08:00
Brian Anderson
408d4ec0ef rt: Remove upcall_alloc_c_stack/call_c_stack, et. al. 
We are using upcall_call_shim_on_c_stack now
 2011-11-30 20:31:32 -08:00
Brian Anderson
037ca7f7cb rt: Rewrite 32-bit __morestack to use the shim upcall 2011-11-30 20:31:32 -08:00
Brian Anderson
777c3584b9 rt: Request the correct number of bytes on the C stack 2011-11-29 23:01:19 -08:00
Brian Anderson
06f4cb43f6 rt: Delete the entire stack chain on task destruction 
Unwinding through __morestack on 64-bit Linux seems to be no big deal, and
all we have to do is free the stacks to make unwinding work with split stacks.
 2011-11-29 22:22:49 -08:00
Brian Anderson
72baf70748 rt: Conditionalize out the 32-bit __morestack for everything but Linux 
Currently broken everywhere else
 2011-11-29 13:52:34 -08:00
Brian Anderson
8cbba79208 rt: Fix the name of the linux macro in x86_64/morestack.S 2011-11-29 13:50:34 -08:00
Brian Anderson
afb8f01741 rt: Fix calculation of stack args location in x86_64/morestack.S 2011-11-29 13:47:54 -08:00
Brian Anderson
9675343dc9 rt: Fix i386/morestack.S for static linking 2011-11-29 13:47:54 -08:00
Brian Anderson
a9967423f8 rt: Make 64-bit __morestack grow and shrink properly 2011-11-28 21:57:52 -08:00
Brian Anderson
5461c61af2 rt: Remove a FIXME frome x86_64/morestack.S 2011-11-28 20:14:12 -08:00
Brian Anderson
ef20afc36c rt: Get 64-bit Linux __morestack allocating new stacks 2011-11-28 18:39:18 -08:00
Brian Anderson
3a80d7b0e3 rt: Set hidden visibility on __morestack 
Each crate will have its own copy of this function, which should not be
exported.
 2011-11-28 18:01:39 -08:00
Brian Anderson
28745aa07f rt: Rename L$bail to .L$bail in i386/morestack.S 2011-11-28 17:10:00 -08:00
Brian Anderson
e075412a92 build: Stop linking morestack.S to rt 
__morestack has to be linked statically. The odd calling convention on x86_64
results in the arguments to __morestack (r10 & r11) being clobbered by the
dynamic linker. gcc links all the __morestack functions statically.
 2011-11-28 16:37:29 -08:00
Brian Anderson
cd75c9ce11 rt: Implement part of the 64-bit __morestack 2011-11-28 16:29:52 -08:00
Brian Anderson
020d8f12a0 rt: Implement record_sp for 64-bit linux 2011-11-27 19:00:26 -08:00
Brian Anderson
93e8783496 rt: Make __morestack build on win32 2011-11-22 18:02:13 -08:00
Brian Anderson
0580d4e77a rt: Add x86_64 record_sp stub 2011-11-22 18:02:12 -08:00