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15254 %ymm registers not restored after signal handler
15367 x86 getfpregs() summons corrupting %xmm ghosts
15333 want x86 /proc xregs support (libc_db, libproc, mdb, etc.)
15336 want libc functions for extended ucontext_t
15334 want ps_lwphandle-specific reg routines
15328 FPU_CW_INIT mistreats reserved bit
15335 i86pc fpu_subr.c isn't really platform-specific
15332 setcontext(2) isn't actually noreturn
15331 need <sys/stdalign.h>
Change-Id: I7060aa86042dfb989f77fc3323c065ea2eafa9ad
Conflicts:
usr/src/uts/common/fs/proc/prcontrol.c
usr/src/uts/intel/os/archdep.c
usr/src/uts/intel/sys/ucontext.h
usr/src/uts/intel/syscall/getcontext.c
@@ -102,11 +102,11 @@
segments, each containing several note entries as described below. The
note entry header and core file note type (n_type) definitions are
contained in <sys/elf.h>. The first NOTE segment exists for binary
compatibility with old programs that deal with core files. It contains
structures defined in <sys/old_procfs.h>. New programs should recognize
- and skip this BNOTE segment, advancing instead to the new NOTE segment.
+ and skip this NOTE segment, advancing instead to the new NOTE segment.
The old NOTE segment is deleted from core files in a future release.
The old NOTE segment contains the following entries. Each has entry name
CORE and presents the contents of a system structure:
@@ -136,11 +136,11 @@
interest to a debugger from the operating system, such as
the general registers, signal dispositions, state, reason
for stopping, process-ID, and so forth. The prstatus_t
structure is defined in <sys/old_procfs.h>.
- prfpregset_t n_type: NT_PRFPREG. This entry is present only if the BLWP
+ prfpregset_t n_type: NT_PRFPREG. This entry is present only if the LWP
used the floating-point hardware. It contains the
floating-point registers. The prfpregset_t structure is
defined in <sys/procfs_isa.h>.
gwindows_t n_type: NT_GWINDOWS. This entry is present only on a SPARC
@@ -147,14 +147,17 @@
machine and only if the system was unable to flush all of
the register windows to the stack. It contains all of the
unspilled register windows. The gwindows_t structure is
defined in <sys/regset.h>.
- prxregset_t n_type: NT_PRXREG. This entry is present only if the
- machine has extra register state associated with it. It
- contains the extra register state. The prxregset_t
- structure is defined in sys/procfs_isa.h.
+ prxregset_t n_type: NT_PRXREG. This entry is no longer included in
+ core files, but is of historical note because in the past
+ it was included on SPARC-based systems. While since then
+ the prxregset_t and extended register sets have been
+ defined on other architectures, they do not emit this in
+ the old note section because there is no binary
+ compatibility.
The new NOTE segment contains the following entries. Each has entry name
CORE and presents the contents of a system structure:
psinfo_t n_type: NT_PSINFO. This structure contains information of
@@ -289,11 +292,16 @@
defined in <sys/regset.h>.
prxregset_t n_type: NT_PRXREG. This entry is present only if the
machine has extra register state associated with it. It
contains the extra register state. The prxregset_t
- structure is defined in <sys/procfs_isa.h>.
+ structure is defined in <sys/procfs_isa.h>; however
+ applications should include <procfs.h> to get access to it.
+ On most architectures the prxregset_t is opaque and is made
+ up of multiple structures because it can vary in length.
+ proc(5) discusses the structure of the extended register set
+ for each supported architecture.
asrset_t asrset_t n_type: NT_ASRS. This entry is present only on a
SPARC V9 machine and only if the process is a 64-bit
process. It contains the ancillary state registers for the
LWP. The asrset_t asrset_t structure is defined in
@@ -318,6 +326,6 @@
elfdump(1), gcore(1), mdb(1), proc(1), ps(1), getrlimit(2), setrlimit(2),
setuid(2), sysinfo(2), uname(2), upanic(2), getzoneid(3C),
getzonenamebyid(3C), elf(3ELF), signal.h(3HEAD), a.out(5), proc(5),
security-flags(7), zones(7), coreadm(8)
-illumos August 3, 2021 illumos
+illumos January 24, 2023 illumos