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>
21 unsigned long begin, end, next_sp;
29 bool in_irq_stack(unsigned long stack, struct stack_info *info);
30 bool in_task_stack(unsigned long stack, struct task_struct *task, struct stack_info *info);
31 int get_stack_info(unsigned long stack, struct task_struct *task, struct stack_info *info);
33 #define STR_LONG_L __stringify(LONG_L)
34 #define STR_LONG_S __stringify(LONG_S)
35 #define STR_LONGSIZE __stringify(LONGSIZE)
37 #define STORE_ONE_REG(r) \
38 STR_LONG_S " $r" __stringify(r)", %1, "STR_LONGSIZE"*"__stringify(r)"\n\t"
40 #define CSRRD_ONE_REG(reg) \
41 __stringify(csrrd) " %0, "__stringify(reg)"\n\t"
43 static __always_inline void prepare_frametrace(struct pt_regs *regs)
48 /* Use $ra to save PC */
50 STR_LONG_S " $ra, %0\n\t"
52 STR_LONG_L " $ra, %1, "STR_LONGSIZE"\n\t"
83 : "=m" (regs->csr_era)
86 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_BADV) : "=r" (regs->csr_badvaddr));
87 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_CRMD) : "=r" (regs->csr_crmd));
88 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_PRMD) : "=r" (regs->csr_prmd));
89 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_EUEN) : "=r" (regs->csr_euen));
90 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_ECFG) : "=r" (regs->csr_ecfg));
91 __asm__ __volatile__(CSRRD_ONE_REG(LOONGARCH_CSR_ESTAT) : "=r" (regs->csr_estat));
94 #endif /* _ASM_STACKTRACE_H */