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lib: Print mtval in sbi_trap_error()

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The mtval CSR is very useful information when debugging hence
print it upon trap error in sbi_trap_error().

Signed-off-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Anup Patel
2018-12-27 10:06:38 +05:30
committed by Anup Patel
parent 45f874da6c
commit f2d4c5f291
1 changed files with 11 additions and 11 deletions
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22
lib/sbi_trap.c
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@@ -21,13 +21,15 @@
static void __attribute__((noreturn)) sbi_trap_error(const char *msg, static void __attribute__((noreturn)) sbi_trap_error(const char *msg,
int rc, u32 hartid, int rc, u32 hartid,
ulong mcause, ulong mcause, ulong mtval,
struct sbi_trap_regs *regs) struct sbi_trap_regs *regs)
{ {
sbi_printf("%s: hart%d: %s (error %d)\n", sbi_printf("%s: hart%d: %s (error %d)\n",
__func__, hartid, msg, rc); __func__, hartid, msg, rc);
sbi_printf("%s: hart%d: mcause=0x%lx mepc=0x%lx mstatus=0x%lx\n", sbi_printf("%s: hart%d: mcause=0x%lx mtval=0x%lx\n",
__func__, hartid, mcause, regs->mepc, regs->mstatus); __func__, hartid, mcause, mtval);
sbi_printf("%s: hart%d: mepc=0x%lx mstatus=0x%lx\n",
__func__, hartid, regs->mepc, regs->mstatus);
sbi_printf("%s: hart%d: %s=0x%lx %s=0x%lx\n", sbi_printf("%s: hart%d: %s=0x%lx %s=0x%lx\n",
__func__, hartid, "ra", regs->ra, "sp", regs->sp); __func__, hartid, "ra", regs->ra, "sp", regs->sp);
sbi_printf("%s: hart%d: %s=0x%lx %s=0x%lx\n", sbi_printf("%s: hart%d: %s=0x%lx %s=0x%lx\n",
@@ -67,8 +69,8 @@ static void __attribute__((noreturn)) sbi_trap_error(const char *msg,
void sbi_trap_handler(struct sbi_trap_regs *regs, void sbi_trap_handler(struct sbi_trap_regs *regs,
struct sbi_scratch *scratch) struct sbi_scratch *scratch)
{ {
int rc; int rc = SBI_ENOTSUPP;
const char *msg; const char *msg = "trap handler failed";
u32 hartid = sbi_current_hartid(); u32 hartid = sbi_current_hartid();
ulong mcause = csr_read(mcause); ulong mcause = csr_read(mcause);
@@ -82,15 +84,12 @@ void sbi_trap_handler(struct sbi_trap_regs *regs,
sbi_ipi_process(scratch, hartid); sbi_ipi_process(scratch, hartid);
break; break;
default: default:
sbi_trap_error("unhandled external interrupt", msg = "unhandled external interrupt";
SBI_ENOTSUPP, hartid, mcause, regs); goto trap_error;
break;
}; };
return; return;
} }
rc = SBI_ENOTSUPP;
msg = "trap handler failed";
switch (mcause) { switch (mcause) {
case CAUSE_ILLEGAL_INSTRUCTION: case CAUSE_ILLEGAL_INSTRUCTION:
rc = sbi_illegal_insn_handler(hartid, mcause, regs, scratch); rc = sbi_illegal_insn_handler(hartid, mcause, regs, scratch);
@@ -113,7 +112,8 @@ void sbi_trap_handler(struct sbi_trap_regs *regs,
break; break;
}; };
trap_error:
if (rc) { if (rc) {
sbi_trap_error(msg, rc, hartid, mcause, regs); sbi_trap_error(msg, rc, hartid, mcause, csr_read(mtval), regs);
} }
} }