Yesterday I successfully got in touch with a Debian developer from imgtec.
Welcome Su Yunqiang.
V4 patch can be tested on mips64 be hosts now.
The following guests on a mips64
big-endian host is OK:
- Debian i386 with qemu-system-i386
- Debian i386 with qemu-system-x86_64
However, Debian amd64 with qemu-system-x86_64 fails to boot kernel.
A 'rep movsq' instruction is wrongly emulated.
I will fix this bug within one or two days.
But even Su cannot provide an R6 machine.
Jin Guojie
---Original---
From: "Jin Guojie"<jinguo...@loongson.cn>
Date: 2016/11/29 14:08:16
To: "qemu-devel"<qemu-devel@nongnu.org>;
Cc: "Richard Henderson"<r...@twiddle.net>;"James
Hogan"<james.ho...@imgtec.com>;"Aurelien Jarno"<aurel...@aurel32.net>;"Jin
Guojie"<jinguo...@loongson.cn>;
Subject: [PATCH v4 00/10] tcg mips64 and mips r6 improvements
Changes since v3:
* tcg_out_qemu_ld_slow_path: always sign-extend 32-bit loads.
Provide a better solution than patch11 in v3.
Fix the blocking bug when emulating i386 kernel on mips64el.
* Redefine LO_OFF/HI_OFF as v2.
On mips64 host, they are defined as link_error, to ensure that
all paths that lead to the use of the symbol are eliminated by
the compiler.
Other info:
* Update against master(v2.8.0-rc1)
* Tested on Loongson as mips32r2(el) and mips64r2(el) hosts.
Loongson only implements little-endian mips32/mips64 ISA.
* Fully work for 32-bit and 64-bit guests.
Fix two bugs??segmentation fault on mips64el with 32-bit guests,
blocking when emulating i386 kernel on mips64el.
* Fix some minor style problems.
* PATCH v2 12~16 are not examined due to the lack of R6 machine.
To be tested:
* big-endian mips32 and mips64 hosts.
* MIPS R6.
Summary of changes from v3:
| tcg-mips: Always use tcg_debug_assert | merged previously |
| tcg-mips: Move bswap code to a subroutine | no change |
| tcg-mips: Add mips64 opcodes | no change |
| tcg-mips: Support 64-bit opcodes | no change |
| tcg-mips: Add bswap32u and bswap64 | no change |
| tcg-mips: Adjust move functions for mips64 | no change |
| tcg-mips: Adjust load/store functions for | no change |
| tcg-mips: Adjust prologue for mips64 | no change |
| tcg-mips: Add tcg unwind info | no change |
| tcg-mips: Adjust calling conventions for | no change |
| tcg-mips: Adjust qemu_ld/st for mips64 |
| (1) tcg_out_qemu_st_slow_path??fix the crash on mips64el with |
| i386 guest, when executing seabios |
| (2) tcg_out_qemu_ld_slow_path: always sign-extend 32-bit loads |
| Fix the blocking when emulating i386 kernel on mips64el |
| tcg-mips: Adjust condition functions for mips64 (abandoned) |
Jin Guojie (10):
tcg-mips: Move bswap code to a subroutine
tcg-mips: Add mips64 opcodes
tcg-mips: Support 64-bit opcodes
tcg-mips: Add bswap32u and bswap64
tcg-mips: Adjust move functions for mips64
tcg-mips: Adjust load/store functions for mips64
tcg-mips: Adjust prologue for mips64
tcg-mips: Add tcg unwind info
tcg-mips: Adjust calling conventions for mips64
tcg-mips: Adjust qemu_ld/st for mips64
Cc: Aurelien Jarno <aurel...@aurel32.net>
Cc: James Hogan <james.ho...@imgtec.com>
Signed-off-by: Richard Henderson <r...@twiddle.net>
Signed-off-by: Jin Guojie <jinguo...@loongson.cn>
tcg/mips/tcg-target.h | 60 ++-
tcg/mips/tcg-target.inc.c | 1168 +++++++++++++++++++++++++++++++++++----------
2 files changed, 975 insertions(+), 253 deletions(-)
--
2.1.0
