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lib: sbi: factorize previous mode computation

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Previous privilege mode retrieval from mstatus is done at different
places, factorize it rather than copy/pasting it again.

Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
This commit is contained in:
Clément Léger
2024-10-18 10:40:03 +02:00
committed by Anup Patel
parent daa282573f
commit 80656bdb1d
6 changed files with 13 additions and 8 deletions
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4
lib/sbi/sbi_trap.c
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@@ -109,7 +109,7 @@ int sbi_trap_redirect(struct sbi_trap_regs *regs,
bool next_virt = false;
/* Sanity check on previous mode */
prev_mode = (regs->mstatus & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT;
prev_mode = sbi_mstatus_prev_mode(regs->mstatus);
if (prev_mode != PRV_S && prev_mode != PRV_U)
return SBI_ENOTSUPP;
@@ -361,7 +361,7 @@ trap_done:
if (rc)
sbi_trap_error(msg, rc, tcntx);
if (((regs->mstatus & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT) != PRV_M)
if (sbi_mstatus_prev_mode(regs->mstatus) != PRV_M)
sbi_sse_process_pending_events(regs);
sbi_trap_set_context(scratch, tcntx->prev_context);