diff options
| author | Anup Patel <anup.patel@wdc.com> | 2018-12-27 21:39:13 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2018-12-31 09:28:26 +0530 |
| commit | 5959312a5c26df64ebfdd9b4d926e88cf3d87840 (patch) | |
| tree | f6e7f81f1a8611537c52385a439cbf291ee745be /include/sbi/sbi_trap.h | |
| parent | 56e41f7a8db2c9bcfd1116748d496e5d40d2397b (diff) | |
lib: Redirect illegal instruction trap to S-mode when not handled
Currently, we fail with error SBI_ENOTSUPP when we are not able
to handle illegal instruction trap. Instead, we should just
redirect illegal instruction trap to S-mode when not handled.
This redirection of illegal instruction trap will help lazy
save/restore of floating point registers to work correctly in
Linux kernel.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Diffstat (limited to 'include/sbi/sbi_trap.h')
| -rw-r--r-- | include/sbi/sbi_trap.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/sbi/sbi_trap.h b/include/sbi/sbi_trap.h index a6b22e4..4e5a054 100644 --- a/include/sbi/sbi_trap.h +++ b/include/sbi/sbi_trap.h @@ -51,6 +51,10 @@ struct sbi_trap_regs { struct sbi_scratch; +int sbi_trap_redirect(struct sbi_trap_regs *regs, + struct sbi_scratch *scratch, + ulong epc, ulong cause, ulong tval); + void sbi_trap_handler(struct sbi_trap_regs *regs, struct sbi_scratch *scratch); |