This patch series allow qemu-system-loongarch64 to emulate a LoongArch32
machine. A new CPU model (la132) is added for loongarch32, however due
to lack of public documentation, details will need to be added in the
future. Initial GDB support is added.
At the same time, VA32(32-bit virtual address) support is introduced for
LoongArch64.
LA32 support is tested using a small supervisor program at
https://github.com/jiegec/supervisor-la32. VA32 mode under LA64 is not
tested yet.
Changes since v4:
- Code refactor, thanks Richard Henderson for great advice
- Truncate higher 32 bits of PC in VA32 mode
- Revert la132 initfn refactor
Changes since v3:
- Support VA32 mode for LoongArch64
- Check the current arch from CPUCFG.ARCH
- Reject la64-only instructions in la32 mode
Changes since v2:
- Fix typo in previous commit
- Fix VPPN width in TLBEHI/TLBREHI
Changes since v1:
- No longer create a separate qemu-system-loongarch32 executable, but
allow user to run loongarch32 emulation using qemu-system-loongarch64
- Add loongarch32 cpu support for virt machine
Full changes:
Jiajie Chen (11):
target/loongarch: Add function to check current arch
target/loongarch: Add new object class for loongarch32 cpus
target/loongarch: Add GDB support for loongarch32 mode
target/loongarch: Support LoongArch32 TLB entry
target/loongarch: Support LoongArch32 DMW
target/loongarch: Support LoongArch32 VPPN
target/loongarch: Add LA64 & VA32 to DisasContext
target/loongarch: Reject la64-only instructions in la32 mode
target/loongarch: Truncate high 32 bits of address in VA32 mode
target/loongarch: Sign extend results in VA32 mode
target/loongarch: Add loongarch32 cpu la132
configs/targets/loongarch64-softmmu.mak | 2 +-
gdb-xml/loongarch-base32.xml | 45 ++++++++
hw/loongarch/virt.c | 5 -
target/loongarch/cpu-csr.h | 22 ++--
target/loongarch/cpu.c | 74 +++++++++++--
target/loongarch/cpu.h | 33 ++++++
target/loongarch/gdbstub.c | 34 ++++--
target/loongarch/insn_trans/trans_arith.c.inc | 32 +++---
.../loongarch/insn_trans/trans_atomic.c.inc | 81 +++++++-------
target/loongarch/insn_trans/trans_bit.c.inc | 28 ++---
.../loongarch/insn_trans/trans_branch.c.inc | 11 +-
target/loongarch/insn_trans/trans_extra.c.inc | 16 +--
.../loongarch/insn_trans/trans_fmemory.c.inc | 30 ++----
target/loongarch/insn_trans/trans_fmov.c.inc | 4 +-
target/loongarch/insn_trans/trans_lsx.c.inc | 38 ++-----
.../loongarch/insn_trans/trans_memory.c.inc | 102 ++++++++----------
target/loongarch/insn_trans/trans_shift.c.inc | 14 +--
target/loongarch/op_helper.c | 4 +-
target/loongarch/tlb_helper.c | 66 +++++++++---
target/loongarch/translate.c | 43 ++++++++
target/loongarch/translate.h | 9 ++
21 files changed, 445 insertions(+), 248 deletions(-)
create mode 100644 gdb-xml/loongarch-base32.xml
--
2.41.0