mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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*/
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#ifndef _ASM_PTRACE_H
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#define _ASM_PTRACE_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm/isadep.h>
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/*
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* This struct defines the way the registers are stored on the stack during a
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* system call/exception. As usual the registers k0/k1 aren't being saved.
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*
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* If you add a register here, also add it to regoffset_table[] in
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* arch/mips/kernel/ptrace.c.
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*/
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struct pt_regs {
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#ifdef CONFIG_32BIT
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/* Pad bytes for argument save space on the stack. */
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unsigned long pad0[8];
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#endif
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/* Saved main processor registers. */
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unsigned long regs[32];
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/* Saved special registers. */
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unsigned long cp0_status;
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unsigned long hi;
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unsigned long lo;
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#ifdef CONFIG_CPU_HAS_SMARTMIPS
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unsigned long acx;
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#endif
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unsigned long cp0_badvaddr;
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unsigned long cp0_cause;
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unsigned long cp0_epc;
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#ifdef CONFIG_CPU_CAVIUM_OCTEON
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unsigned long long mpl[6]; /* MTM{0-5} */
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unsigned long long mtp[6]; /* MTP{0-5} */
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#endif
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unsigned long __last[0];
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} __aligned(8);
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static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
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{
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return regs->regs[31];
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}
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/*
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* Don't use asm-generic/ptrace.h it defines FP accessors that don't make
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* sense on MIPS. We rather want an error if they get invoked.
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*/
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static inline void instruction_pointer_set(struct pt_regs *regs,
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unsigned long val)
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{
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regs->cp0_epc = val;
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}
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/* Query offset/name of register from its name/offset */
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extern int regs_query_register_offset(const char *name);
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#define MAX_REG_OFFSET (offsetof(struct pt_regs, __last))
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/**
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* regs_get_register() - get register value from its offset
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* @regs: pt_regs from which register value is gotten.
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* @offset: offset number of the register.
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*
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* regs_get_register returns the value of a register. The @offset is the
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* offset of the register in struct pt_regs address which specified by @regs.
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* If @offset is bigger than MAX_REG_OFFSET, this returns 0.
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*/
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static inline unsigned long regs_get_register(struct pt_regs *regs,
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unsigned int offset)
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{
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if (unlikely(offset > MAX_REG_OFFSET))
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return 0;
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return *(unsigned long *)((unsigned long)regs + offset);
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}
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/*
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* Does the process account for user or for system time?
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*/
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#define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
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#define instruction_pointer(regs) ((regs)->cp0_epc)
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#define profile_pc(regs) instruction_pointer(regs)
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/* Helpers for working with the user stack pointer */
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static inline unsigned long user_stack_pointer(struct pt_regs *regs)
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{
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return regs->regs[29];
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}
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static inline void user_stack_pointer_set(struct pt_regs *regs,
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unsigned long val)
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{
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regs->regs[29] = val;
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}
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#endif /* _ASM_PTRACE_H */
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