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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_ldst.c
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@@ -318,7 +318,7 @@ static int sbi_ld_access_emulator(int rlen, union sbi_ldst_data *out_val,
struct sbi_trap_regs *regs = &tcntx->regs;
/* If fault came from M mode, just fail */
if (((regs->mstatus & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT) == PRV_M)
if (sbi_mstatus_prev_mode(regs->mstatus) == PRV_M)
return SBI_EINVAL;
/* If platform emulator failed, we redirect instead of fail */
@@ -341,7 +341,7 @@ static int sbi_st_access_emulator(int wlen, union sbi_ldst_data in_val,
struct sbi_trap_regs *regs = &tcntx->regs;
/* If fault came from M mode, just fail */
if (((regs->mstatus & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT) == PRV_M)
if (sbi_mstatus_prev_mode(regs->mstatus) == PRV_M)
return SBI_EINVAL;
/* If platform emulator failed, we redirect instead of fail */