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include: Remove ilen member of struct unpriv_trap

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We simplify struct unpriv_trap by removing ilen member. This
can be achieved by ensuring that at all unpriv load/store
instructions are 4 bytes long using GCC assembler option.

Additionally, this also reduces few instructions from unpriv
load/store functions.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2019-11-16 16:08:27 +05:30
committed by Anup Patel
parent 215421ca61
commit 838657c052
3 changed files with 32 additions and 21 deletions
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2
lib/sbi/sbi_trap.c
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@@ -262,7 +262,7 @@ void sbi_trap_handler(struct sbi_trap_regs *regs, struct sbi_scratch *scratch)
uptrap = sbi_hart_get_trap_info(scratch);
if ((regs->mstatus & MSTATUS_MPRV) && uptrap) {
rc = 0;
regs->mepc += uptrap->ilen;
regs->mepc += 4;
uptrap->cause = mcause;
uptrap->tval = mtval;
} else {