mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 02:05:20 +07:00
0a9426df18
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
|
|
* Copyright (C) 1999, 2000 Niibe Yutaka
|
|
*/
|
|
#ifndef __ASM_SH_PTRACE_H
|
|
#define __ASM_SH_PTRACE_H
|
|
|
|
|
|
#include <linux/stringify.h>
|
|
#include <linux/stddef.h>
|
|
#include <linux/thread_info.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/page.h>
|
|
#include <uapi/asm/ptrace.h>
|
|
|
|
#define user_mode(regs) (((regs)->sr & 0x40000000)==0)
|
|
#define kernel_stack_pointer(_regs) ((unsigned long)(_regs)->regs[15])
|
|
|
|
#define GET_FP(regs) ((regs)->regs[14])
|
|
#define GET_USP(regs) ((regs)->regs[15])
|
|
|
|
#define arch_has_single_step() (1)
|
|
|
|
/*
|
|
* kprobe-based event tracer support
|
|
*/
|
|
struct pt_regs_offset {
|
|
const char *name;
|
|
int offset;
|
|
};
|
|
|
|
#define REG_OFFSET_NAME(r) {.name = #r, .offset = offsetof(struct pt_regs, r)}
|
|
#define REGS_OFFSET_NAME(num) \
|
|
{.name = __stringify(r##num), .offset = offsetof(struct pt_regs, regs[num])}
|
|
#define TREGS_OFFSET_NAME(num) \
|
|
{.name = __stringify(tr##num), .offset = offsetof(struct pt_regs, tregs[num])}
|
|
#define REG_OFFSET_END {.name = NULL, .offset = 0}
|
|
|
|
/* Query offset/name of register from its name/offset */
|
|
extern int regs_query_register_offset(const char *name);
|
|
extern const char *regs_query_register_name(unsigned int offset);
|
|
|
|
extern const struct pt_regs_offset regoffset_table[];
|
|
|
|
/**
|
|
* regs_get_register() - get register value from its offset
|
|
* @regs: pt_regs from which register value is gotten.
|
|
* @offset: offset number of the register.
|
|
*
|
|
* regs_get_register returns the value of a register. The @offset is the
|
|
* offset of the register in struct pt_regs address which specified by @regs.
|
|
* If @offset is bigger than MAX_REG_OFFSET, this returns 0.
|
|
*/
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* regs_within_kernel_stack() - check the address in the stack
|
|
* @regs: pt_regs which contains kernel stack pointer.
|
|
* @addr: address which is checked.
|
|
*
|
|
* regs_within_kernel_stack() checks @addr is within the kernel stack page(s).
|
|
* If @addr is within the kernel stack, it returns true. If not, returns false.
|
|
*/
|
|
static inline int regs_within_kernel_stack(struct pt_regs *regs,
|
|
unsigned long addr)
|
|
{
|
|
return ((addr & ~(THREAD_SIZE - 1)) ==
|
|
(kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1)));
|
|
}
|
|
|
|
/**
|
|
* regs_get_kernel_stack_nth() - get Nth entry of the stack
|
|
* @regs: pt_regs which contains kernel stack pointer.
|
|
* @n: stack entry number.
|
|
*
|
|
* regs_get_kernel_stack_nth() returns @n th entry of the kernel stack which
|
|
* is specified by @regs. If the @n th entry is NOT in the kernel stack,
|
|
* this returns 0.
|
|
*/
|
|
static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
|
|
unsigned int n)
|
|
{
|
|
unsigned long *addr = (unsigned long *)kernel_stack_pointer(regs);
|
|
addr += n;
|
|
if (regs_within_kernel_stack(regs, (unsigned long)addr))
|
|
return *addr;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
struct perf_event;
|
|
struct perf_sample_data;
|
|
|
|
extern void ptrace_triggered(struct perf_event *bp,
|
|
struct perf_sample_data *data, struct pt_regs *regs);
|
|
|
|
#define task_pt_regs(task) \
|
|
((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE) - 1)
|
|
|
|
static inline unsigned long profile_pc(struct pt_regs *regs)
|
|
{
|
|
unsigned long pc = regs->pc;
|
|
|
|
if (virt_addr_uncached(pc))
|
|
return CAC_ADDR(pc);
|
|
|
|
return pc;
|
|
}
|
|
#define profile_pc profile_pc
|
|
|
|
#include <asm-generic/ptrace.h>
|
|
#endif /* __ASM_SH_PTRACE_H */
|