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arch: riscv: print symbol name of mepc if CONFIG_SYMTAB is enabled

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The mepc register is the address of the instruction that was
interrupted, it will make debugging easier if we know the
name of the symbol, so print it if `CONFIG_SYMTAB` is enabled.

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
This commit is contained in:
Yong Cong Sin 2024-05-21 16:06:07 +08:00 • committed by Anas Nashif
commit eafc4eff04
1 changed files with 8 additions and 0 deletions
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8
arch/riscv/core/fatal.c
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@ -4,6 +4,7 @@
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/debug/symtab.h>
#include <zephyr/kernel.h>
#include <zephyr/kernel_structs.h>
#include <kernel_internal.h>
@ -79,7 +80,14 @@ FUNC_NORETURN void z_riscv_fatal_error_csf(unsigned int reason, const z_arch_esf
#endif /* CONFIG_RISCV_ISA_RV32E */
LOG_ERR(" sp: " PR_REG, z_riscv_get_sp_before_exc(esf));
LOG_ERR(" ra: " PR_REG, esf->ra);
#ifndef CONFIG_SYMTAB
LOG_ERR(" mepc: " PR_REG, esf->mepc);
#else
uint32_t offset = 0;
const char *name = symtab_find_symbol_name(esf->mepc, &offset);
LOG_ERR(" mepc: " PR_REG " [%s+0x%x]", esf->mepc, name, offset);
#endif
LOG_ERR("mstatus: " PR_REG, esf->mstatus);
LOG_ERR("");
}