14 Commits

Author SHA1 Message Date
Michał Górny
f290efc326 [lldb] [ABI/X86] Support combining xmm* and ymm*h regs into ymm*
gdbserver does not expose combined ymm* registers but rather XSAVE-style
split xmm* and ymm*h portions.  Extend value_regs to support combining
multiple registers and use it to create user-friendly ymm* registers
that are combined from split xmm* and ymm*h portions.

Differential Revision: https://reviews.llvm.org/D108937
2021-10-20 15:06:45 +02:00
Michał Górny
ee11612ee1 Revert "[lldb] [ABI/X86] Support combining xmm* and ymm*h regs into ymm*"
This reverts commit 5352ea4a721ef252129994111b83dc350ecc71da.  It seems
to have broken the arm buildbot.
2021-10-19 12:31:25 +02:00
Michał Górny
5352ea4a72 [lldb] [ABI/X86] Support combining xmm* and ymm*h regs into ymm*
gdbserver does not expose combined ymm* registers but rather XSAVE-style
split xmm* and ymm*h portions.  Extend value_regs to support combining
multiple registers and use it to create user-friendly ymm* registers
that are combined from split xmm* and ymm*h portions.

Differential Revision: https://reviews.llvm.org/D108937
2021-10-19 10:31:07 +02:00
Michał Górny
1583c41d07 [lldb] [test] Add TestGDBServerTargetXML tests for x86 duplicate subregs 2021-10-15 16:04:16 +02:00
Michał Górny
e7418906f5 [lldb] [test] Simplify X86 TestGDBServerTargetXML logic to match AArch64 2021-10-15 14:15:50 +02:00
Michał Górny
f70f9620d9 [lldb] [ABI/AArch64] Do not add subregs if some of them are present
Fix a bug introduced while refactoring ABIAArch64::AugmentRegisterInfo()
that caused subregisters to be added even if they were already present.
Instead, abort immediately if at least one subregister is found
(following ABIX86).  While at it, add a test for that.

Differential Revision: https://reviews.llvm.org/D111881
2021-10-15 14:08:37 +02:00
Michał Górny
2712d18148 [lldb] [ABI/X86] Add pseudo-registers if missing
Differential Revision: https://reviews.llvm.org/D108831
2021-10-15 12:55:03 +02:00
Michał Górny
bda5fe8f0c [lldb] [gdb-remote] Fix displaying i387_ext & vec regs with gdbserver
Adjust the encoding and format applied to i387_ext and vec* type
registers from gdbserver to match lldb-server.  Both types are now
displayed as vector of uint8 instead of float and integer formats used
before.  Additionally, this fixes display of STi registers when they do
not carry floating-point data (they are also used to hold MMX vectors).

Differential Revision: https://reviews.llvm.org/D108468
2021-10-12 15:16:06 +02:00
Michał Górny
583f67cb4e [lldb] [ABI/AArch64] Add pseudo-regs if missing
Create pseudo-registers on the AArch64 target if they are not provided
by the remote server. This is the case for gdbserver. The created
registers are:

- 32-bit wN partials for 64-bit xN registers
- double precision floating-point dN registers (overlapping with vN)
- single precision floating-point sN registers (overlapping with vN)

Differential Revision: https://reviews.llvm.org/D109876
2021-10-11 17:02:27 +02:00
Michał Górny
f6e0edc23e [lldb] [gdb-remote] Recognize aarch64v type from gdbserver
Differential Revision: https://reviews.llvm.org/D109899
2021-09-20 10:41:38 +02:00
Michał Górny
47d57547f4 [lldb] [Process/gdb-remote] Alias sp to x31 on AArch64 for gdbserver
Alias the "sp" register to "x31" on AArch64 if one is present and does
not have the alt_name.  This is the case when connecting to gdbserver.

Differential Revision: https://reviews.llvm.org/D109695
2021-09-16 13:13:47 +02:00
Michał Górny
c208deb900 [lldb] [ABI/AArch64] Recognize special regs by their xN names too
Recognize lr/sp/fp by their numeric register names in the ABI plugin.
This is necessary to mark them appropriately when interfacing with
gdbserver.

Differential Revision: https://reviews.llvm.org/D109691
2021-09-16 10:23:31 +02:00
Michał Górny
66249323d2 [lldb] [gdb-remote] Try using <architecture/> for remote arch unconditionally
Try determining the process architecture from <architecture/> tag
unconditionally, rather than for very specific cases.  Generic gdbserver
implementations do not support LLDB-specific packets used to determine
the process architecture, therefore this fallback is necessary to
support architecture-specific behavior on these targets.  Rather than
maintaining a mapping of all known architectures, just try mapping
the GDB values into triplets, as that is going to work most of the time.

This change is confirmed to fix LLDB against gdbserver when debugging
i386 and aarch64 executables.

Differential Revision: https://reviews.llvm.org/D109272
2021-09-16 10:23:31 +02:00
Michał Górny
8567f4d4b9 [lldb] Support querying registers via generic names without alt_names
Update GetRegisterInfoByName() methods to support getting registers
by a generic name independently of alt_name entries in the register
context.  This makes it possible to use generic names when interacting
with gdbserver (that does not supply alt_names).  It also makes it
possible to remove some of the duplicated information from register
context declarations and/or use alt_names for another purpose.

Differential Revision: https://reviews.llvm.org/D108554
2021-09-13 13:05:06 +02:00