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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990/* SPDX-License-Identifier: GPL-2.0 */#ifndef _ASM_STACKTRACE_H#define _ASM_STACKTRACE_H
#include <asm/ptrace.h>#include <asm/asm.h>#include <linux/stringify.h>
#ifdef CONFIG_KALLSYMSextern int raw_show_trace;extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, unsigned long pc, unsigned long *ra);extern unsigned long unwind_stack_by_address(unsigned long stack_page, unsigned long *sp, unsigned long pc, unsigned long *ra);#else#define raw_show_trace 1static inline unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, unsigned long pc, unsigned long *ra){ return 0;}#endif
#define STR_PTR_LA __stringify(PTR_LA)#define STR_LONG_S __stringify(LONG_S)#define STR_LONG_L __stringify(LONG_L)#define STR_LONGSIZE __stringify(LONGSIZE)
#define STORE_ONE_REG(r) \ STR_LONG_S " $" __stringify(r)",("STR_LONGSIZE"*"__stringify(r)")(%1)\n\t"
static __always_inline void prepare_frametrace(struct pt_regs *regs){#ifndef CONFIG_KALLSYMS /* * Remove any garbage that may be in regs (specially func * addresses) to avoid show_raw_backtrace() to report them */ memset(regs, 0, sizeof(*regs));#endif __asm__ __volatile__( ".set push\n\t" ".set noat\n\t" /* Store $1 so we can use it */ STR_LONG_S " $1,"STR_LONGSIZE"(%1)\n\t" /* Store the PC */ "1: " STR_PTR_LA " $1, 1b\n\t" STR_LONG_S " $1,%0\n\t" STORE_ONE_REG(2) STORE_ONE_REG(3) STORE_ONE_REG(4) STORE_ONE_REG(5) STORE_ONE_REG(6) STORE_ONE_REG(7) STORE_ONE_REG(8) STORE_ONE_REG(9) STORE_ONE_REG(10) STORE_ONE_REG(11) STORE_ONE_REG(12) STORE_ONE_REG(13) STORE_ONE_REG(14) STORE_ONE_REG(15) STORE_ONE_REG(16) STORE_ONE_REG(17) STORE_ONE_REG(18) STORE_ONE_REG(19) STORE_ONE_REG(20) STORE_ONE_REG(21) STORE_ONE_REG(22) STORE_ONE_REG(23) STORE_ONE_REG(24) STORE_ONE_REG(25) STORE_ONE_REG(26) STORE_ONE_REG(27) STORE_ONE_REG(28) STORE_ONE_REG(29) STORE_ONE_REG(30) STORE_ONE_REG(31) /* Restore $1 */ STR_LONG_L " $1,"STR_LONGSIZE"(%1)\n\t" ".set pop\n\t" : "=m" (regs->cp0_epc) : "r" (regs->regs) : "memory");}
#endif /* _ASM_STACKTRACE_H */