- the SYSCALL/
SYSRET instructions were
available on
Model 7 (250nm "Little Foot") and later, not on the
earlier Model 6.
SYSCALL and
SYSRET were made an...
- x86
instructions for
system call (SYSENTER/SY****IT by
Intel and SYSCALL/
SYSRET by AMD), a new
faster mechanism was
introduced for
control transfers for...
- For example, the x86
instruction set
contains the
instructions SYSCALL/
SYSRET and SYSENTER/SY****IT (these two
mechanisms were
independently created by...
- AMD64.
These include SYSCFG, TOP_MEM, and TOP_MEM2. Intel 64
allows SYSCALL/
SYSRET only in 64-bit mode (not in
compatibility mode), and
allows SYSENTER/SY****IT...
- model-specific
register added in the AMD K6 processor, to
allow enabling the SYSCALL/
SYSRET instruction, and
later for
entering and
exiting long mode. This register...
- such a possibility. The use of EDX bit 10 to
indicate support for SYSCALL/
SYSRET is only
valid on
AuthenticAMD Family 5
Model 7 CPUs (AMD K6, 250nm "Little...
-
performance monitor counts rdtsc read time
stamp counter syscall sysenter sy****it
sysret ud2 an
undefined instruction just for
software testing xsave save processor...
- AMD64
instruction SYSCALL; the 386
LOADALL instruction, 0F07,
became the
SYSRET instruction.
These definitions were
implemented even on
Intel CPUs with...
