Commit Graph

6 Commits

Author SHA1 Message Date
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Kamil Rytarowski 88e545ec3d Remove remnant code of using indirect syscall on NetBSD
Summary:
The NetBSD version of internal routines no longer call
the indirect syscall interfaces, as these functions were
switched to lib calls.

Remove the remnant code complication that is no
longer needed after this change. Remove the variations
of internal_syscall, as they were NetBSD specific.

No functional change intended.

Reviewers: vitalybuka, joerg, javed.absar

Reviewed By: vitalybuka

Subscribers: kubamracek, fedor.sergeev, llvm-commits, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D52955

llvm-svn: 343988
2018-10-08 18:04:46 +00:00
Kamil Rytarowski 175e775e0f Try to unbreak Linux sanitizers
Add fallback definition of internal_syscall_ptr and internal_syscall64
for Linux/x86_64 and Linux/aarch64.

llvm-svn: 316598
2017-10-25 17:56:36 +00:00
Alexey Samsonov 78a6d2073f [FreeBSD] Port sanitizers' syscalls.
Patch by Viktor Kutuzov!

llvm-svn: 203227
2014-03-07 10:03:54 +00:00
Dmitry Vyukov c967d2f49c asan/msan/tsan: fix broken linux syscalls
Currently the following source code:

u64 NanoTime() {
  kernel_timeval tv = {};
  internal_syscall(__NR_gettimeofday, &tv, 0);
  return (u64)tv.tv_sec * 1000*1000*1000 + tv.tv_usec * 1000;
}

generates the following assembly:

Dump of assembler code for function __sanitizer::NanoTime():
=> 0x00007ff30657d380 <+0>:	lea    -0x10(%rsp),%rdi
   0x00007ff30657d385 <+5>:	xor    %esi,%esi
   0x00007ff30657d387 <+7>:	mov    $0x60,%eax
   0x00007ff30657d38c <+12>:	syscall 
   0x00007ff30657d38e <+14>:	mov    $0,%eax
   0x00007ff30657d393 <+19>:	retq   

with this change:

Dump of assembler code for function __sanitizer::NanoTime():
=> 0x00007faab834f380 <+0>:	movq   $0x0,-0x10(%rsp)
   0x00007faab834f389 <+9>:	movq   $0x0,-0x8(%rsp)
   0x00007faab834f392 <+18>:	lea    -0x10(%rsp),%rdi
   0x00007faab834f397 <+23>:	xor    %esi,%esi
   0x00007faab834f399 <+25>:	mov    $0x60,%eax
   0x00007faab834f39e <+30>:	syscall 
   0x00007faab834f3a0 <+32>:	mov    -0x8(%rsp),%rax
   0x00007faab834f3a5 <+37>:	mov    -0x10(%rsp),%rcx
   0x00007faab834f3aa <+42>:	imul   $0x3e8,%rax,%rdx
   0x00007faab834f3b1 <+49>:	imul   $0x3b9aca00,%rcx,%rax
   0x00007faab834f3b8 <+56>:	add    %rdx,%rax
   0x00007faab834f3bb <+59>:	retq   

llvm-svn: 191908
2013-10-03 16:53:50 +00:00
Peter Collingbourne 6f4be19b57 [nolibc] Change internal syscall API to remove reliance on libc's errno.
This change moves to a model where the error value of a system call is
potentially contained in the return value itself rather than being
implicit in errno.  The helper function internal_iserror can be used
to extract the error value from a return value.  On platforms other
than Linux/x86_64 this still uses errno, but other platforms are free
to port their error handling to this new model.

Differential Revision: http://llvm-reviews.chandlerc.com/D756

llvm-svn: 181436
2013-05-08 14:43:49 +00:00