1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
5 #ifndef _ASM_STACKTRACE_H
6 #define _ASM_STACKTRACE_H
9 #include <asm/ptrace.h>
10 #include <asm/loongarch.h>
11 #include <linux/stringify.h>
13 #define STR_LONG_L __stringify(LONG_L)
14 #define STR_LONG_S __stringify(LONG_S)
15 #define STR_LONGSIZE __stringify(LONGSIZE)
17 #define STORE_ONE_REG(r) \
18 STR_LONG_S " $r" __stringify(r)", %1, "STR_LONGSIZE"*"__stringify(r)"\n\t"
20 #define CSRRD_ONE_REG(reg) \
21 __stringify(csrrd) " %0, "__stringify(reg)"\n\t"
23 static __always_inline void prepare_frametrace(struct pt_regs *regs)
28 /* Use $ra to save PC */
30 STR_LONG_S " $ra, %0\n\t"
32 STR_LONG_L " $ra, %1, "STR_LONGSIZE"\n\t"
63 : "=m" (regs->csr_era)
66 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_BADV) : "=r" (regs->csr_badvaddr));
67 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_CRMD) : "=r" (regs->csr_crmd));
68 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_PRMD) : "=r" (regs->csr_prmd));
69 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_EUEN) : "=r" (regs->csr_euen));
70 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_ECFG) : "=r" (regs->csr_ecfg));
71 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_ESTAT) : "=r" (regs->csr_estat));
74 #endif /* _ASM_STACKTRACE_H */