The patch tries to separate the multi-letter extensions that may implicitly-enabled by misa.EXT from the explicitly-enabled cases, so that the misa.EXT can truely disabled by write_misa(). With this separation, the implicitly-enabled zve64d/f and zve32f extensions will no work if we clear misa.V. And clear misa.V will have no effect on the explicitly-enalbed zve64d/f and zve32f extensions.
Weiwei Li (2): target/riscv: Add set_implicit_extensions_from_ext() function target/riscv: Add ext_z*_enabled for implicitly enabled extensions target/riscv/cpu.c | 73 +++++++++++++++---------- target/riscv/cpu.h | 8 +++ target/riscv/cpu_helper.c | 2 +- target/riscv/csr.c | 2 +- target/riscv/insn_trans/trans_rvd.c.inc | 2 +- target/riscv/insn_trans/trans_rvf.c.inc | 2 +- target/riscv/insn_trans/trans_rvi.c.inc | 5 +- target/riscv/insn_trans/trans_rvv.c.inc | 16 +++--- target/riscv/translate.c | 4 +- 9 files changed, 68 insertions(+), 46 deletions(-) -- 2.25.1
