- Per-executable contexts should be used from now on
- Global contexts are left as is for now for backwards
compatibility and will be phased out in follow up
patches.
Change-Id: I6291abf865c7ed24ee71f5065e539afc23f5ce64
When inspecting waves on architectures where SPI may not initialize TTMP
registers, the debugger cannot reliably know if the trap handler was
entered and if it saved valuable information in TTMP registers.
This patch uses the status.skip_export bit (unused by the compute
shaders) to indicate that it got executed before halting a wave.
This is done except for gfx940, where ttmp11[31] can be used (as long as
TTMP registers are always initialized by SPI for this architecture). It
could be possible to be more selective as architectures always
initializing TTMP registers do not require this step, but always doing
is makes maintenance simpler.
Change-Id: I5c4148c78062f7ffa049ac7856c2edc82dbc77d1
The wavefront size is currently only exposed as an agent level
attribute. This is not correctyl, because while the agent has a default
wave front size that is usually correct, it can easily be overridden via
options like -mwavefrontsize64 on various ISAs. The wavefrontsize
attribute is actually more of a calling convention that is consistent
within a callgraph. Because the root of each call graph is a kernel in
this architecture, we need to be able to query this on a per-kernel
basis. This information is already avialable in the kernel descriptor
packet, but it wasn't exported.
This patch adds HSA_CODE_SYMBOL_INFO_KERNEL_WAVEFRONT_SIZE as a new
option to query on the executable symbol.
Change-Id: I744815c89cc9d4c82f25479bdd48ae1f32e859ff
This reverts commit c5db063b2f. This
change is required for the runtime to generate reliable core dump files,
but this feature has been disabled for now by
5e3be9c28a. Until it is needed, revert
the ABI change in the trap handler to maintain compatibility with older
debugger.
Change-Id: I77a1562dc7962befe2bf88442df858e2d2b1c5ab
When inspecting waves on architectures where SPI may not initialize TTMP
registers, the debugger cannot reliably know if the trap handler was
entered and if it saved valuable information in TTMP registers.
This patch uses the status.skip_export bit (unused by the compute
shaders) to indicate that it got executed before halting a wave.
This is done except for gfx940, where ttmp11[31] can be used (as long as
TTMP registers are always initialized by SPI for this architecture). It
could be possible to be more selective as architectures always
initializing TTMP registers do not require this step, but always doing
is makes maintenance simpler.
Change-Id: I314db6b37772f7daa8bd405e6662a86658d3f5e0
On gfx11, with a sequence such as
s_trap 2
s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
s_endpgm
the s_sendmsg does deallocate registers while the wave is supposed to be
stopped. As a result, the wave cannot do the expected context save
operations, and cannot context save.
To avoid this problem, park the wave in the trap handler for gfx11.
Note that gfx11 has implemented an instruction cache prefetch. When
parked, the prefetch tries to access memory past the end of trap handler
which causes memory violation exceptions to be reported. To avoid this,
we need to add padding at the end of the trap handler. The padding
consists of `s_code_end` instructions Given that the trap handler is
loaded at a 0x1000 aligned address the maximum prefetch amount (in
bytes) is given by `256 - (trap_handler_size % 64)`.
Change-Id: I5446da54a965a64f21cb0fd3ce3caa4b6137a933
gfx940 uses ttmp11 to hold the queue packet index so the first level
trap handler uses ttmp13 instead to save ib_sts.
Repurpose ttmp11[31] to mean that the ttmps are initialized. The issue
was that the debugger could not tell whether ttmp6 was written by the
trap handler when determining the stop reason.
If ttmp11[31]=0, then the trap handler has not been executed and ttmp6
should be assumed to be 0. If ttmp11[31]=1, then ttmp6 holds the
trap_id, if an s_trap instruction caused the exception.
Signed-off-by: Laurent Morichetti <laurent.morichetti@amd.com>
Signed-off-by: Lancelot Six <lancelot.six@amd.com>
Change-Id: I9af903abae044b9ec530306229caf3b883f3ee46
Park the wave, if it is stopped, to avoid halting it at an s_endpgm
instruction if the architecture does not support it.
Free ttmp6 by converting the dispatch_ptr into a queue packet index
(25-bit) and storing it in ttmp7[24:0].
Save the exception PC in ttmp11[22:7] ttmp6[31:0].
Change-Id: Iaa3c5baf5b488c0b534044d338f12bffa63ddce2
Replace the stop reasons ttmp11.trap_raised and ttmp11.excp_raised
with ttmp11.wave_stopped which indicates that the trap handler has
halted the wave as the result of an event (trap, single-step or
exception).
If the wave is stopped because of a trap, also record the trap_id in
ttmp11.saved_trap_id[7:0].
Save status.halt in ttmp11.saved_status_halt, so that it can be
restored when resuming a wave (changing a wave's state from stopped to
running or single-stepping).
Change-Id: I7322f59b60e8cc1b92bf5f067dba606a3109ef49
To support single stepping the instruction preceding an s_endpgm,
unwind the PC by 8 bytes and set ttmp11[9] to notify the debugger
that the wave is halted with a modified PC.
Bump the debug r_version for this new trap handler ABI.
Change-Id: I55e4e0d65576f92da14a336266c31c513baab547
Code object V2 had the ability to support the following queries:
- HSA_CODE_SYMBOL_INFO_KERNEL_KERNARG_SEGMENT_SIZE
- HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_KERNARG_SEGMENT_SIZE
- HSA_CODE_SYMBOL_INFO_KERNEL_KERNARG_SEGMENT_ALIGNMENT
- HSA_EXECUTABLE_SYMBOL_INFO_KERNEL_KERNARG_SEGMENT_ALIGNMENT
However code object V3 onwards cannot support these as the kernel
descriptor changed. These queries need to be deprecated.
Until then return more reasonable values:
- For kernarg alignment return 16 which is the minimum alignment
required by the HSA standard.
- For kernarg size return the field from the kernel descriptor which
is a hint. If it is 0 then the compiler is not specifying the kernarg
size, or the kernel has no kernarg.
Change-Id: I19ce6cd0f3658a2bf62277492f39100ea5ab4256
Adds the following:
- New factory method to create a code object reader from
file with offset and size.
- A pair of queries on a loaded code object to get the URI name/length.
- A bump to the AMD vendor loader extension API and its associated table.
Change-Id: I17c83e9c2447d29a43c438459395365f786a3611
New trap handler ABI: Record in ttmp11[8:7] the event that caused the
trap handler to be entered. We currently record 2 events, trap_raised
if an s_trap instruction was executed, or excp_raised if an exception
(MEM_VIOL or ILLEGAL_INST) was raised.
Change-Id: Ie278c8277437b3b67c2737dcd1a12fe6511df428
Iterate the loaded shared objects to see if the given elf image binary
is part of a loaded segment.
Change-Id: I074cacd99eb5b59f883f4ce2bd901e0e35a660b8
Attribute optimize(0) doesn't appear to be helpful helpful. This
prevents optimization in the function but not at call sites to the
function. The function may still be inlined since it has no side
effect (in some cases that we currently don't support).
Having a side effect prevents a call site optimization that allows
removal of a noinline function call with no side effect. Call site
optimization should only happen (in GCC at least) when using whole
program optimization so this may be stronger than we strictly need.
Also added _amdgpu_r_debug to the exported symbol list (global) and
switched to the standard macro for an exported symbol (HSA_API).
Without being in the global list the debugger will not find this
symbol if the binary has been stripped.
Change-Id: Ieb00175ccc55fda4491deee44711cd55b3f24aeb
Allow user specified profiles if the HSAIL note is not found.
Konstantin reviewed and approved. HSAIL note is not generated by LLVM.
Change-Id: I40fbfbaedd6787b6a716507918f698d02007afe1
- Add support for R_AMDGPU_RELATIVE64 relocation record.
- Return status error if any unsupported relocation record encountered.
Change-Id: Icbb5dcb81109a70c1f2195412a0df58a11be9da1
1. Add hsa ext api hsa_amd_register_vmfault_handler for debugger to register callback in case of VM fault.
2. Extend hsa_ven_amd_loader API to:
(1) iterate loaded code objects in executable:
hsa_ven_amd_loader_executable_iterate_loaded_code_objects
(2) get loaded code object info:
hsa_ven_amd_loader_loaded_code_object_get_info
3. Make the id of hsa_queue the same as the one used in communication with thunk (for amd_aql_queue)
Change-Id: I68910809e59e24297350d262606f00e96c14bcbd
Konstantin Zhuravlyov
pvanhout
Lancelot SIX
Joseph Huber
Laurent Morichetti
Jay Cornwall
Tony
Sean Keely
Ramesh Errabolu
Saleel Kudchadker
Qingchuan Shi
Scott Linder
Wilkin
Konstantin Zhuravlyov