src/sys/mips/include/proc.h, branch releng/12.2

MFC r351227: mips: avoid empty mdproc struct

2019-09-03T20:23:58Z

Compiling with a more modern toolchain than GCC 4.2 in base warns about the empty struct. Take a hint and comment from r350902+r350953 by luporl@.

Fix PT_STEP single-stepping for mips.

2018-04-24T17:53:16Z

Note that GDB at least implements single stepping for MIPS using software breakpoints explicitly rather than using PT_STEP, so this has only been tested via tests in ptrace_test which now pass rather than fail. - Fix several places to use uintptr_t instead of int for virtual addresses. - Check for errors from ptrace_read_int() when setting a breakpoint for a step. - Properly check for errors from ptrace_write_int() as it returns non-zero, not negative values on failure. - Change the error returns for ptrace_read_int() and ptrace_write_int() from ENOMEM to EFAULT. - Clear a single step breakpoint when it traps rather than waiting for it to be cleared from ptrace(). This matches the behavior of the arm port and in general seems a bit more reliable than waiting for ptrace() to clear it via FIX_SSTEP. - Drop the PROC_LOCK around ptrace_write_int() in ptrace_clear_single_step() since it can sleep. - Reorder the breakpoint handler in trap() to only read the instruction if the address matches the current thread's breakpoint address. - Replace various #if 0'd debugging printfs with KTR_PTRACE traces. Tested on: mips64

sys: further adoption of SPDX licensing ID tags.

2017-11-20T19:43:44Z

Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.

Make struct syscall_args visible to userspace compilation environment

2017-06-12T20:53:44Z

from machine/proc.h, consistently on all architectures. Reviewed by: jhb Sponsored by: The FreeBSD Foundation MFC after: 3 weeks X-Differential revision: https://reviews.freebsd.org/D11080

Renumber copyright clause 4

2017-02-28T23:42:47Z

Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96

The TLS offset is a property of the process ABI.

2016-09-15T17:25:52Z

Move to a per-proc TLS offset rather than incorrectly keying off the presense of freebsd32 compability in the kernel. Reviewed by: adrian, sbruno Obtained from: CheriBSD Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D7843

Remove more unused code and declarations, and add dire warnings to the 64-bit

2012-03-12T08:13:04Z

atomic ops used by 32-bit kernels.

o) Add COMPAT_FREEBSD32 support for MIPS kernels using the n64 ABI with userlands

2012-03-03T08:19:18Z

using the o32 ABI. This mostly follows nwhitehorn's lead in implementing COMPAT_FREEBSD32 on powerpc64. o) Add a new type to the freebsd32 compat layer, time32_t, which is time_t in the 32-bit ABI being used. Since the MIPS port is relatively-new, even the 32-bit ABIs use a 64-bit time_t. o) Because time{spec,val}32 has the same size and layout as time{spec,val} on MIPS with 32-bit compatibility, then, disable some code which assumes otherwise wrongly when built for MIPS. A more general macro to check in this case would seem like a good idea eventually. If someone adds support for using n32 userland with n64 kernels on MIPS, then they will have to add a variety of flags related to each piece of the ABI that can vary. That's probably the right time to generalize further. o) Add MIPS to the list of architectures which use PAD64_REQUIRED in the freebsd32 compat code. Probably this should be generalized at some point. Reviewed by: gonzo

- Add better COP2 (crypto coprocessor) context handler for Octeon. Keep

2012-01-06T01:23:26Z

COP2 disabled and lazily allocate COP2 context structure in exception handler. Keep kernel and userland contexts separated.

Remove unused define.

2011-10-07T16:09:44Z

MFC after: 1 month