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arch: riscv: fatal: make cause_str reusable

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Rename `cause_str` to `z_riscv_mcause_str` and make it non-static,
so that it can be used in user-implemented `k_sys_fatal_error_handler`.

Also, this function should return a constant string, so add `const`
to it.

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
Signed-off-by: Yong Cong Sin <yongcong.sin@gmail.com>
This commit is contained in:
Yong Cong Sin 2024-09-03 16:03:34 +08:00 • committed by Johan Hedberg
commit 7844f5aebb
1 changed files with 2 additions and 2 deletions
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4
arch/riscv/core/fatal.c
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@ -52,7 +52,7 @@ uintptr_t z_riscv_get_sp_before_exc(const struct arch_esf *esf)
return sp;
}
static char *cause_str(unsigned long cause)
const char *z_riscv_mcause_str(unsigned long cause)
{
switch (cause) {
case 0:
@ -103,7 +103,7 @@ FUNC_NORETURN void z_riscv_fatal_error_csf(unsigned int reason, const struct arc
mcause &= CONFIG_RISCV_MCAUSE_EXCEPTION_MASK;
LOG_ERR("");
LOG_ERR(" mcause: %ld, %s", mcause, cause_str(mcause));
LOG_ERR(" mcause: %ld, %s", mcause, z_riscv_mcause_str(mcause));
#ifndef CONFIG_SOC_OPENISA_RV32M1
unsigned long mtval;