This patch series allow qemu-system-loongarch64 to emulate a LoongArch32
machine. A new CPU model is added for loongarch32. 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 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 macro 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 LA32 & 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 | 88 ++++++++++++++++---
target/loongarch/cpu.h | 33 ++++++-
target/loongarch/gdbstub.c | 32 +++++--
target/loongarch/insn_trans/trans_arith.c.inc | 34 +++----
.../loongarch/insn_trans/trans_atomic.c.inc | 77 ++++++++--------
target/loongarch/insn_trans/trans_bit.c.inc | 28 +++---
.../loongarch/insn_trans/trans_branch.c.inc | 9 +-
target/loongarch/insn_trans/trans_extra.c.inc | 16 ++--
.../loongarch/insn_trans/trans_fmemory.c.inc | 8 ++
target/loongarch/insn_trans/trans_fmov.c.inc | 4 +-
target/loongarch/insn_trans/trans_lsx.c.inc | 6 ++
.../loongarch/insn_trans/trans_memory.c.inc | 78 +++++++++-------
target/loongarch/insn_trans/trans_shift.c.inc | 14 +--
target/loongarch/tlb_helper.c | 66 +++++++++++---
target/loongarch/translate.c | 26 ++++++
target/loongarch/translate.h | 12 +++
20 files changed, 430 insertions(+), 175 deletions(-)
create mode 100644 gdb-xml/loongarch-base32.xml
--
2.41.0