Release 4.15 arch/mips/include/asm/stacktrace.h

/* 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_KALLSYMS
extern 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 1


static inline unsigned long unwind_stack(struct task_struct *task,
	unsigned long *sp, unsigned long pc, unsigned long *ra)
{
	return 0;
}
Contributors
Person
Tokens
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Commits
CommitProp
Ralf Bächle
20
66.67%
2
66.67%
Atsushi Nemoto
10
33.33%
1
33.33%
Total
30
100.00%
3
100.00%

#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");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Atsushi Nemoto
34
85.00%
1
50.00%
Corey Minyard
6
15.00%
1
50.00%
Total
40
100.00%
2
100.00%

#endif /* _ASM_STACKTRACE_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Atsushi Nemoto
96
54.24%
2
28.57%
Corey Minyard
36
20.34%
1
14.29%
Daniel Kalmar
24
13.56%
1
14.29%
Ralf Bächle
20
11.30%
2
28.57%
Greg Kroah-Hartman
1
0.56%
1
14.29%
Total
177
100.00%
7
100.00%
Directory: arch/mips/include/asm

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