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
