These were kept for ABI reasons. Remove them and bump __FreeBSD_version
so debuggers can be updated to use the new layout.
Reviewed by: jhb
Sponsored by: Arm Ltd
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D35378
Add macros for offsets of macros we set in the arm64 pcb pcb_x array.
This will simplift reducing the size of this array in a later change.
Sponsored by: Arm Ltd
The program counter field in the PCB is written in exactly one place,
makectx(), upon entry to the debugger. For threads other than curthread,
its value will be empty, or bogus. Rather than writing to this field in
more places, it can be removed in favor of using the value in the link
register.
To make this clearer, pcb->pcb_x[30] is renamed to pcb->pcb_lr, similar
to what already exists in struct trapframe. Also, prefer lr to x30 in
assembly, as it better conveys intention.
This improves PC_REGS() for kdb_thread != curthread. It is required for
a functional gdb(4) stub, fixing the output of `info threads`, in
particular.
The space occupied by pcb_pc is retained, for compatibility with kgdb.
Reviewed by: markj, jhb
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D27720
Implement get/fill_dbregs on arm64. This is used by ptrace with the
PT_GETDBREGS and PT_SETDBREGS requests. It allows userspace to set hardware
breakpoints.
The struct dbreg is based on Linux to ease adding hardware breakpoint
support to debuggers.
Reviewed by: jhb
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D22195
VFP code to store the old context, with lazy loading of the new context
when needed.
FPU_KERN_NOCTX is missing as this is unused in the crypto code this has
been tested with, and I am unsure on the requirements of the UEFI
Runtime Services.
Reviewed by: kib
Obtained from: ABT Systeems Ltd
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D8276
not be sent to userspace, for example the future flag to tell when we are
using floating point in the kernel.
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
increased to 256TiB. The kernel address space can also be increased to be
the same size, but this will be performed in a later change.
To help work with an extra level of page tables two new functions have
been added, one to file the lowest level table entry, and one to find the
block/page level. Both of these find the entry for a given pmap and virtual
address.
This has been tested with a combination of buildworld, stress2 tests, and
by using sort to consume a large amount of memory by sorting /dev/zero. No
new issues are known to be present from this change.
Reviewed by: kib
Obtained from: ABT Systems Ltd
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D5720
the processor and debug state registers. A flag has been added to the pcb
to tell us when to enable single stepping for a given thread.
Reviewed by: kib
Sponsored by: ABT Systems Ltd
Differential Revision: https://reviews.freebsd.org/D4730
include this file without first including the headers needed for uint32_t
and the like use the __foo type.
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
