CVS commit: src

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Thu Feb  7 10:58:45 UTC 2019

Modified Files:
        src/lib/libnvmm: libnvmm_x86.c
        src/tests/lib/libnvmm: h_mem_assist.c h_mem_assist_asm.S

Log Message:
Improvements:

 - Emulate the instructions by executing them directly on the host CPU.
   This is easier and probably faster than doing it in software
   manually.

 - Decode SUB from Primary, CMP from Group1, TEST from Group3, and add
   associated tests.

 - Handle correctly the cases where an instruction that always implicitly
   reads the register operand is executed with the mem operand as source
   (eg: "orq (%rbx),%rax").

 - Fix the MMU handling of 32bit-PAE. Under PAE CR3 is not page-aligned,
   so there are extra bits that are valid.

With these changes in place I can boot Windows XP on Qemu+NVMM.


To generate a diff of this commit:
cvs rdiff -u -r1.18 -r1.19 src/lib/libnvmm/libnvmm_x86.c
cvs rdiff -u -r1.4 -r1.5 src/tests/lib/libnvmm/h_mem_assist.c \
    src/tests/lib/libnvmm/h_mem_assist_asm.S

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.