Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _ASM_POWERPC_SECTIONS_H
2#define _ASM_POWERPC_SECTIONS_H
3#ifdef __KERNEL__
4
5#include <linux/elf.h>
6#include <linux/uaccess.h>
7#include <asm-generic/sections.h>
8
9#ifdef __powerpc64__
10
11extern char __start_interrupts[];
12extern char __end_interrupts[];
13
14extern char __prom_init_toc_start[];
15extern char __prom_init_toc_end[];
16
17static inline int in_kernel_text(unsigned long addr)
18{
19 if (addr >= (unsigned long)_stext && addr < (unsigned long)__init_end)
20 return 1;
21
22 return 0;
23}
24
25static inline int overlaps_interrupt_vector_text(unsigned long start,
26 unsigned long end)
27{
28 unsigned long real_start, real_end;
29 real_start = __start_interrupts - _stext;
30 real_end = __end_interrupts - _stext;
31
32 return start < (unsigned long)__va(real_end) &&
33 (unsigned long)__va(real_start) < end;
34}
35
36static inline int overlaps_kernel_text(unsigned long start, unsigned long end)
37{
38 return start < (unsigned long)__init_end &&
39 (unsigned long)_stext < end;
40}
41
42static inline int overlaps_kvm_tmp(unsigned long start, unsigned long end)
43{
44#ifdef CONFIG_KVM_GUEST
45 extern char kvm_tmp[];
46 return start < (unsigned long)kvm_tmp &&
47 (unsigned long)&kvm_tmp[1024 * 1024] < end;
48#else
49 return 0;
50#endif
51}
52
53#undef dereference_function_descriptor
54static inline void *dereference_function_descriptor(void *ptr)
55{
56 struct ppc64_opd_entry *desc = ptr;
57 void *p;
58
59 if (!probe_kernel_address(&desc->funcaddr, p))
60 ptr = p;
61 return ptr;
62}
63
64#endif
65
66#endif /* __KERNEL__ */
67#endif /* _ASM_POWERPC_SECTIONS_H */