diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi/sbi_trap.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/sbi/sbi_trap.h b/include/sbi/sbi_trap.h index fe3640af..a562b95e 100644 --- a/include/sbi/sbi_trap.h +++ b/include/sbi/sbi_trap.h @@ -10,6 +10,8 @@ #ifndef __SBI_TRAP_H__ #define __SBI_TRAP_H__ +#include <sbi/riscv_encoding.h> + /* clang-format off */ /** Index of zero member in sbi_trap_regs */ @@ -206,6 +208,22 @@ struct sbi_trap_info { unsigned long gva; }; +static inline unsigned long sbi_regs_gva(const struct sbi_trap_regs *regs) +{ + /* + * If the hypervisor extension is not implemented, mstatus[h].GVA is a + * WPRI field, which is guaranteed to read as zero. In addition, in this + * case we don't read mstatush and instead pretend it is zero, which + * handles privileged spec version < 1.12. + */ + +#if __riscv_xlen == 32 + return (regs->mstatusH & MSTATUSH_GVA) ? 1 : 0; +#else + return (regs->mstatus & MSTATUS_GVA) ? 1 : 0; +#endif +} + int sbi_trap_redirect(struct sbi_trap_regs *regs, struct sbi_trap_info *trap); |