lib: sbi: factorize previous virtualization mode read from regs

The same pattern is used at multiple places to verify in which mode
the exception was actually taken. Factorize it.

Signed-off-by: Clément Léger <[email protected]>
Reviewed-by: Samuel Holland <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/sbi/sbi_trap.h b/include/sbi/sbi_trap.h
index f7c170e6..b0c47ce5 100644
--- a/include/sbi/sbi_trap.h
+++ b/include/sbi/sbi_trap.h
@@ -236,6 +236,15 @@ static inline unsigned long sbi_regs_gva(const struct sbi_trap_regs *regs)
 #endif
 }
 
+static inline bool sbi_regs_from_virt(const struct sbi_trap_regs *regs)
+{
+#if __riscv_xlen == 32
+	return (regs->mstatusH & MSTATUSH_MPV) ? true : false;
+#else
+	return (regs->mstatus & MSTATUS_MPV) ? true : false;
+#endif
+}
+
 int sbi_trap_redirect(struct sbi_trap_regs *regs,
 		      const struct sbi_trap_info *trap);