| History log of /src/sys/arch/sh3/include/mcontext.h |
| Revision | | Date | Author | Comments |
| 1.17 |
| 27-Apr-2025 |
uwe | sh3/mcontext.h: make asm-friendly, respect _LOCORE
|
| 1.16 |
| 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.
|
| 1.15 |
| 04-Nov-2024 |
christos | Undo previous lwp.h change.
|
| 1.14 |
| 03-Nov-2024 |
christos | Split __lwp_getprivate_fast and __lwp_*tcb from mcontext.h into a separate
lwp.h file.
|
| 1.13 |
| 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>.
|
| 1.12 |
| 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.
|
| 1.11 |
| 15-Feb-2018 |
kamil | branches: 1.11.4;
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>
|
| 1.10 |
| 12-Sep-2012 |
manu | branches: 1.10.32;
setcontext() used to be incompatible with -lpthread since it affected
the TLS pointer, therefore wrecking the pthread environement.
Some ports had _UC_TLSBASE flag or equivalent (_UC_UNIQUE on alpha)
that controlled whether setcontext() would change the TLS pointer.
This change let libpthread override setcontext() with its own version
that unsets _UC_TLSBASE, enabling safe usage of setcontext() with
-lpthread.
We also have the following required changes here:
- rename alpha's _UC_UNIQUE into _UC_TLSBASE
- add _UC_TLSBASE definition in header file for all ports
(powerpc, sh3, sparc and sparc64 lack the implementation for now)
- introduce a libc stub that can be overriden for setcontext()
- modify MD libcs swapcontext() implementations so that they use the
setcontext() libc stub instead of doing a plain system call.
While we are there:
- document various MD _UC_* flags in header file
- add libc and libpthread tests for swapcontext() behavior
(hopefully helpful to spot MD problems introduced with this change)
Future work:
- Deciding whether kernel support or _UC_TLSBASE should be added for
powerpc, sh3, sparc and sparc64 is left to portmasters
sparc64
Approved by core@
|
| 1.9 |
| 25-Feb-2011 |
joerg | branches: 1.9.4;
Be nicer to software that insists on -ansi and use __inline.
|
| 1.8 |
| 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.
|
| 1.7 |
| 01-Jun-2008 |
uwe | branches: 1.7.20; 1.7.26; 1.7.28;
Recycle unused _REG_EXPEVT slot in mcontext for _REG_GBR.
As the size of mcontext is not changed, we avoid the hassle of
versioning all the calls that use it.
_REG_EXPEVT was never used by any code in the tree. Reporting EXPEVT
makes sense only for signals and in that case we pass it to userland
in ksi_trap already which is official MI way to get this (MD) information.
Old binaries running on new kernels will now have their GBR set from
new mcontext, but that's ok too, as GBR was not properly supported by
old kernels (not saved in trapframe), so old binaries couldn't have
possibly used it anyway.
|
| 1.6 |
| 28-Apr-2008 |
martin | branches: 1.6.2;
Remove clause 3 and 4 from TNF licenses
|
| 1.5 |
| 11-Dec-2005 |
christos | branches: 1.5.74; 1.5.76; 1.5.78;
merge ktrace-lwp.
|
| 1.4 |
| 22-Nov-2003 |
uwe | Add _UC_SETSTACK, _UC_CLRSTACK flags. Add __fpr_fpul to __fpregset_t
and redefine __fpr_regs as an array of 32 ints (SH3E has 16, SH4 has
32 32-bit FP registers) to reserve the space for FPU registers - we
will properly redefine this as a union when we do support FPU.
|
| 1.3 |
| 08-Oct-2003 |
thorpej | 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).
|
| 1.2 |
| 18-Jan-2003 |
thorpej | branches: 1.2.2;
Merge the nathanw_sa branch.
|
| 1.1 |
| 20-Jun-2002 |
thorpej | branches: 1.1.2;
file mcontext.h was initially added on branch nathanw_sa.
|
| 1.1.2.2 |
| 20-Jun-2002 |
thorpej | Provide _UC_MACHINE_SP().
|
| 1.1.2.1 |
| 20-Jun-2002 |
thorpej | Machine-dependent kernel portion of {get,set}context(). From
Klaus Klein.
|
| 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
|
| 1.5.78.2 |
| 04-May-2009 |
yamt | sync with head.
|
| 1.5.78.1 |
| 16-May-2008 |
yamt | sync with head.
|
| 1.5.76.2 |
| 04-Jun-2008 |
yamt | sync with head
|
| 1.5.76.1 |
| 18-May-2008 |
yamt | sync with head.
|
| 1.5.74.1 |
| 02-Jun-2008 |
mjf | Sync with HEAD.
|
| 1.6.2.1 |
| 23-Jun-2008 |
wrstuden | Sync w/ -current. 34 merge conflicts to follow.
|
| 1.7.28.1 |
| 05-Mar-2011 |
bouyer | Sync with HEAD
|
| 1.7.26.1 |
| 06-Jun-2011 |
jruoho | Sync with HEAD.
|
| 1.7.20.1 |
| 05-Mar-2011 |
rmind | sync with head
|
| 1.9.4.1 |
| 30-Oct-2012 |
yamt | sync with head
|
| 1.10.32.3 |
| 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.
|
| 1.10.32.2 |
| 26-Feb-2018 |
snj | revert ticket 552, which broke the build
|
| 1.10.32.1 |
| 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>
|
| 1.11.4.1 |
| 08-Apr-2020 |
martin | Merge changes from current as of 20200406
|
