| History log of /src/sys/arch/i386/include/mcontext.h |
| Revision | | Date | Author | Comments |
| 1.19 |
| 30-Nov-2024 |
christos | Create a new header lwp_private.h to contain _lwp_getprivate_fast,
_lwp_gettcb_fast, _lwp_settcb and remove them from mcontext.h, so that:
1. we don't need special hacks to hide them
2. we can include <lwp.h> where needed to get the necessary prototypes
without redefining them locally.
|
| 1.18 |
| 04-Nov-2024 |
christos | Undo previous lwp.h change.
|
| 1.17 |
| 03-Nov-2024 |
christos | Split __lwp_getprivate_fast and __lwp_*tcb from mcontext.h into a separate
lwp.h file.
|
| 1.16 |
| 18-May-2024 |
thorpej | Clean up the <sys/ucontext.h> <-> <machine/mcontext.h> interface up
a little:
- Define _UC_MD_BIT* constants for the available machine-dependent bits,
and use those constants to define the machine-dependent bits as well
as the machine-independent bits that have machine-dependent values.
- Explicitly generate an error if _UC_TLSBASE, _UC_SETSTACK, or
_UC_CLRSTACK are not defined by <machine/mcontext.h>.
|
| 1.15 |
| 27-Dec-2019 |
kamil | Harmonize the namespace of fast TLS base pointer getter functions
Protect __lwp_getprivate_fast() with _RTLD_SOURCE, _LIBC_SOURCE and
__LIBPTHREAD_SOURCE__.
Include in this namespace <sys/tcl.h> and use __BEGIN_DECLS/__END_DECLS
for the sake of consistency.
|
| 1.14 |
| 15-Feb-2018 |
kamil | branches: 1.14.4;
Introduce _UC_MACHINE_FP() as a macro
_UC_MACHINE_FP() is a helper macro to extract from mcontext a frame pointer.
Don't rely on this interface as a compiler might strip frame pointer or
optimize it making this interface unreliable.
For hppa assume a small frame context, for larger frames FP might be located
in a different register (4 instead of 3).
For ia64 there is no strict frame pointer, and registers might rotate.
Reuse 79 following:
./gcc/config/ia64/ia64.h:#define HARD_FRAME_POINTER_REGNUM LOC_REG (79)
Once ia64 will mature, this should be revisited.
A macro can encapsulate a real function for extracting Frame Pointer on
more complex CPUs / ABIs.
For the remaining CPUs, reuse standard register as defined in appropriate ABI.
The direct users of this macro are LLVM and GCC with Sanitizers.
Proposed on tech-userlevel@.
Sponsored by <The NetBSD Foundation>
|
| 1.13 |
| 12-Aug-2017 |
maxv | Remove vm86.
Pass 4.
|
| 1.12 |
| 15-Feb-2014 |
dsl | branches: 1.12.6; 1.12.22;
Load and save the fpu registers (for copies to/from userspace) using
helper functions in arch/x86/x86/fpu.c
They (hopefully) ensure that we write to the entire buffer and don't load
values that might cause faults in kernel.
Also zero out the 'pad' field of the i386 mcontext fp area that I think
once contained the registers of any Weitek fpu.
Dunno why it wasn't pasrt of the union.
Some of these copies could be removed if the code directly copied the save
area to/from userspace addresses.
|
| 1.11 |
| 04-Feb-2014 |
dsl | Remove the fields from 'struct save87' and 'struct fxsave' that were used
to save the control word and tag word on fp faults.
Nothing I could find looked at them before I removed the code that wrote them.
It might appear that these fields got exported to userspace (via mcontext),
but that code carefully avoided those fields.
I've also deleted some very historic fields from the union inside __fpregset_t
this doesn't affect its size.
The __fpregset_t fields are now the same size as the ones in the pcb.
Which is good because they get cast to each other in a few places.
|
| 1.10 |
| 25-Feb-2011 |
joerg | branches: 1.10.4; 1.10.14; 1.10.18;
Be nicer to software that insists on -ansi and use __inline.
|
| 1.9 |
| 24-Feb-2011 |
joerg | Allow storing and receiving the LWP private pointer via ucontext_t
on all platforms except VAX and IA64. Add fast access via register for
AMD64, i386 and SH3 ports. Use this fast access in libpthread to replace
the stack based pthread_self(). Implement skeleton support for Alpha,
HPPA, PowerPC, SPARC and SPARC64, but leave it disabled.
Ports that support this feature provide __HAVE____LWP_GETPRIVATE_FAST in
machine/types.h and a corresponding __lwp_getprivate_fast in
machine/mcontext.h.
This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.
|
| 1.8 |
| 23-Feb-2011 |
joerg | Fix ucontext32_t on AMD64. Add optional compile time assertions for
ucontext_t and ucontext32_t to ensure that they don't change.
Provide the constants for AMD64, ARM, i386, and M68K.
|
| 1.7 |
| 28-Apr-2008 |
martin | branches: 1.7.14; 1.7.22; 1.7.28; 1.7.30;
Remove clause 3 and 4 from TNF licenses
|
| 1.6 |
| 08-Oct-2003 |
thorpej | branches: 1.6.102; 1.6.104; 1.6.106;
Add some accessor macros for the ucontext:
* _UC_MACHINE_PC() - access the program counter
* _UC_MACHINE_INTRV() - access the integer return value register
* _UC_MACHINE_SET_PC() - set the program counter (this requires
special handling on some platforms).
|
| 1.5 |
| 06-Sep-2003 |
christos | SA_SIGINFO changes.
|
| 1.4 |
| 25-Aug-2003 |
tron | Protect inclusion of "opt_vm86.h" with "#ifdef _KERNEL_OPT" as appropriate.
|
| 1.3 |
| 25-Aug-2003 |
drochner | fix _UC_MACHINE_SP() for the vm86 case: we have to add the SS offset
|
| 1.2 |
| 17-Jan-2003 |
thorpej | branches: 1.2.2;
Merge the nathanw_sa branch.
|
| 1.1 |
| 05-Mar-2001 |
nathanw | branches: 1.1.2;
file mcontext.h was initially added on branch nathanw_sa.
|
| 1.1.2.5 |
| 19-Dec-2002 |
thorpej | Expose _UC_UCONTEXT_ALIGN.
|
| 1.1.2.4 |
| 06-Sep-2002 |
nathanw | Define an alignment constraint, _UC_UCONTEXT_ALIGN; put it and
_UC_MACHINE_SP() inside #ifdef _KERNEL.
|
| 1.1.2.3 |
| 14-Aug-2002 |
nathanw | Add space for the fxsave/XMM save area to mcontext_t; since the fxsave
format includes the x87 register state (although in a different bit
pattern), make it overlap the x87 save area, and add a flag to
indicate that this format is in use.
This makes mcontext_t 264 bytes larger, for a total of 720 bytes.
|
| 1.1.2.2 |
| 28-Dec-2001 |
nathanw | Add a macro, _UC_MACHINE_SP(), to fetch the user stack pointer from
a ucontext_t.
|
| 1.1.2.1 |
| 05-Mar-2001 |
nathanw | Initial commit of scheduler activations and lightweight process support.
|
| 1.2.2.3 |
| 21-Sep-2004 |
skrll | Fix the sync with head I botched.
|
| 1.2.2.2 |
| 18-Sep-2004 |
skrll | Sync with HEAD.
|
| 1.2.2.1 |
| 03-Aug-2004 |
skrll | Sync with HEAD
|
| 1.6.106.1 |
| 16-May-2008 |
yamt | sync with head.
|
| 1.6.104.1 |
| 18-May-2008 |
yamt | sync with head.
|
| 1.6.102.1 |
| 02-Jun-2008 |
mjf | Sync with HEAD.
|
| 1.7.30.1 |
| 05-Mar-2011 |
bouyer | Sync with HEAD
|
| 1.7.28.1 |
| 06-Jun-2011 |
jruoho | Sync with HEAD.
|
| 1.7.22.1 |
| 05-Mar-2011 |
rmind | sync with head
|
| 1.7.14.1 |
| 28-Mar-2011 |
jym | Sync with HEAD. TODO before merge:
- shortcut for suspend code in sysmon, when powerd(8) is not running.
Borrow ``xs_watch'' thread context?
- bug hunting in xbd + xennet resume. Rings are currently thrashed upon
resume, so current implementation force flush them on suspend. It's not
really needed.
|
| 1.10.18.1 |
| 18-May-2014 |
rmind | sync with head
|
| 1.10.14.2 |
| 03-Dec-2017 |
jdolecek | update from HEAD
|
| 1.10.14.1 |
| 20-Aug-2014 |
tls | Rebase to HEAD as of a few days ago.
|
| 1.10.4.1 |
| 22-May-2014 |
yamt | sync with head.
for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.
this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
|
| 1.12.22.3 |
| 21-Mar-2018 |
martin | Pull up the following, requested by kamil in ticket #552:
external/gpl3/gcc{.old}/dist/libsanitizer/asan/asan_linux.cc 1.4
sys/arch/aarch64/include/mcontext.h 1.2
sys/arch/alpha/include/mcontext.h 1.9
sys/arch/amd64/include/mcontext.h 1.19
sys/arch/arm/include/mcontext.h 1.19
sys/arch/hppa/include/mcontext.h 1.9
sys/arch/i386/include/mcontext.h 1.14
sys/arch/ia64/include/mcontext.h 1.6
sys/arch/m68k/include/mcontext.h 1.10
sys/arch/mips/include/mcontext.h 1.22
sys/arch/or1k/include/mcontext.h 1.2
sys/arch/powerpc/include/mcontext.h 1.18
sys/arch/riscv/include/mcontext.h 1.5
sys/arch/sh3/include/mcontext.h 1.11
sys/arch/sparc/include/mcontext.h 1.14-1.17
sys/arch/sparc64/include/mcontext.h 1.10
sys/arch/vax/include/mcontext.h 1.9
tests/lib/libc/sys/Makefile 1.50
tests/lib/libc/sys/t_ucontext.c 1.2-1.5
sys/arch/hppa/include/mcontext.h 1.10
sys/arch/ia64/include/mcontext.h 1.7
- Introduce _UC_MACHINE_FP(). _UC_MACHINE_FP() is a helper
macro to extract from mcontext a frame pointer.
- Add new tests in lib/libc/sys/t_ucontext:
* ucontext_sp (testing _UC_MACHINE_SP)
* ucontext_fp (testing _UC_MACHINE_FP)
* ucontext_pc (testing _UC_MACHINE_PC)
* ucontext_intrv (testing _UC_MACHINE_INTRV)
Add a dummy implementation of _UC_MACHINE_INTRV() for ia64.
Implement _UC_MACHINE_INTRV() for hppa.
Make the t_ucontext.c test more portable.
We now have _UC_MACHINE_FP.
|
| 1.12.22.2 |
| 26-Feb-2018 |
snj | revert ticket 552, which broke the build
|
| 1.12.22.1 |
| 25-Feb-2018 |
snj | Pull up following revision(s) (requested by kamil in ticket #552):
sys/arch/aarch64/include/mcontext.h: 1.2
sys/arch/alpha/include/mcontext.h: 1.9
sys/arch/amd64/include/mcontext.h: 1.19
sys/arch/arm/include/mcontext.h: 1.19
sys/arch/hppa/include/mcontext.h: 1.9
sys/arch/i386/include/mcontext.h: 1.14
sys/arch/ia64/include/mcontext.h: 1.6
sys/arch/m68k/include/mcontext.h: 1.10
sys/arch/mips/include/mcontext.h: 1.22
sys/arch/or1k/include/mcontext.h: 1.2
sys/arch/powerpc/include/mcontext.h: 1.18
sys/arch/riscv/include/mcontext.h: 1.5
sys/arch/sh3/include/mcontext.h: 1.11
sys/arch/sparc/include/mcontext.h: 1.14-1.17
sys/arch/sparc64/include/mcontext.h: 1.10
sys/arch/vax/include/mcontext.h: 1.9
tests/lib/libc/sys/Makefile: 1.50
tests/lib/libc/sys/t_ucontext.c: 1.2
Introduce _UC_MACHINE_FP() as a macro
_UC_MACHINE_FP() is a helper macro to extract from mcontext a frame pointer.
Don't rely on this interface as a compiler might strip frame pointer or
optimize it making this interface unreliable.
For hppa assume a small frame context, for larger frames FP might be located
in a different register (4 instead of 3).
For ia64 there is no strict frame pointer, and registers might rotate.
Reuse 79 following:
./gcc/config/ia64/ia64.h:#define HARD_FRAME_POINTER_REGNUM LOC_REG (79)
Once ia64 will mature, this should be revisited.
A macro can encapsulate a real function for extracting Frame Pointer on
more complex CPUs / ABIs.
For the remaining CPUs, reuse standard register as defined in appropriate ABI.
The direct users of this macro are LLVM and GCC with Sanitizers.
Proposed on tech-userlevel@.
Sponsored by <The NetBSD Foundation>
--
Improve _UC_MACHINE_FP() for SPARC/SPARC64
Introduce a static inline function _uc_machine_fp() that contains improved
caluclation of a frame pointer.
Algorithm:
uptr *stk_ptr;
# if defined (__arch64__)
stk_ptr = (uptr *) (*sp + 2047);
# else
stk_ptr = (uptr *) *sp;
# endif
*bp = stk_ptr[15];
Noted by <mrg>
--
Make _UC_MACHINE_FP() compile again and fix it so that it does not add
the offset twice.
--
fix _UC_MACHINE32_FP() -- use 32 bit pointer value so that [15] is
the right offset. do this by using __greg32_t, which is only in
the sparc64 version, and these are only useful there, so move them.
--
Add new tests in lib/libc/sys/t_ucontext
New tests:
- ucontext_sp
- ucontext_fp
- ucontext_pc
- ucontext_intrv
They test respectively:
- _UC_MACHINE_SP
- _UC_MACHINE_FP
- _UC_MACHINE_PC
- _UC_MACHINE_INTRV
These tests attempt to access and print the values from ucontext, without
interpreting the values.
This is a follow up of the _UC_MACHINE_FP() introduction.
These tests use PRIxREGISTER, and require to be built with -D_KERNTYPES.
Sponsored by <The NetBSD Foundation>
|
| 1.12.6.1 |
| 28-Aug-2017 |
skrll | Sync with HEAD
|
| 1.14.4.1 |
| 08-Apr-2020 |
martin | Merge changes from current as of 20200406
|
