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Author	SHA1	Message	Date
Deepak GuptaandAnup Patel	c0804ed49a	lib: sbi: add zicfilp/zicfiss and elp cfi state reflect back in status ... This patch adds support to check for zicfilp / zicfiss extension. zicfilp record status of hart's ELP state in *status csr. Missing landing pad sets MPELP in mstatus. When SBI is redirecting back to S/VS/HS, SPELP is set in sstatus/vsstatus. Signed-off-by: Deepak Gupta <debug@rivosinc.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Samuel Holland <samuel.holland@sifive.com>	2024-09-23 18:58:04 +05:30
Deepak GuptaandAnup Patel	6758a756c4	include: adding support for Zicfilp / Zicfiss encodings ... Zicfilp / Zicfiss extension (see link) introduces b2 (LPE) in menvcfg CSR to enable landing pads and b3 (SSE) in menvcfg CSR to enable shadow stack and landing pad for privilege less than M. Additionally extension introduces new bits in *status for recording landing pad state and a new exception type `software check exception` with cause=0x12. Link: https://github.com/riscv/riscv-cfi Signed-off-by: Deepak Gupta <debug@rivosinc.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Samuel Holland <samuel.holland@sifive.com>	2024-09-23 18:55:07 +05:30