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parisc: add functions required by KPROBE_EVENTS

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implement regs_get_register(), regs_get_kernel_stack_nth() and
regs_within_kernel_stack()

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Sven Schnelle
2019-04-07 20:10:57 +02:00
committed by Helge Deller
parent 82d96bf68e
commit ea1afe339a
2 changed files with 48 additions and 0 deletions
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13
arch/parisc/include/asm/ptrace.h
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@@ -37,4 +37,17 @@ extern int regs_query_register_offset(const char *name);
extern const char *regs_query_register_name(unsigned int offset);
#define MAX_REG_OFFSET (offsetof(struct pt_regs, ipsw))
#define kernel_stack_pointer(regs) ((regs)->gr[30])
static inline unsigned long regs_get_register(struct pt_regs *regs,
unsigned int offset)
{
if (unlikely(offset > MAX_REG_OFFSET))
return 0;
return *(unsigned long *)((unsigned long)regs + offset);
}
unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
int regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr);
#endif