projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| fbcd54b1 JL |
2 | #ifndef _ASM_POWERPC_SECTIONS_H |
| 3 | #define _ASM_POWERPC_SECTIONS_H | |
| 88ced031 | 4 | #ifdef __KERNEL__ |
| 1da177e4 | 5 | |
| 2d291e90 JB |
6 | #include <linux/elf.h> |
| 7 | #include <linux/uaccess.h> | |
| 6f07048c | 8 | |
| 0dc690e4 CL |
9 | #ifdef CONFIG_HAVE_FUNCTION_DESCRIPTORS |
| 10 | typedef struct func_desc func_desc_t; | |
| 11 | #endif | |
| 12 | ||
| 1da177e4 LT |
13 | #include <asm-generic/sections.h> |
| 14 | ||
| 7aa5b018 | 15 | extern char __head_end[]; |
| b150a4d1 | 16 | extern char __srwx_boundary[]; |
| ea73179e | 17 | extern char __exittext_begin[], __exittext_end[]; |
| 7aa5b018 | 18 | |
| eb316ae7 ME |
19 | /* Patch sites */ |
| 20 | extern s32 patch__call_flush_branch_caches1; | |
| 21 | extern s32 patch__call_flush_branch_caches2; | |
| 22 | extern s32 patch__call_flush_branch_caches3; | |
| 23 | extern s32 patch__flush_count_cache_return; | |
| 24 | extern s32 patch__flush_link_stack_return; | |
| 25 | extern s32 patch__call_kvm_flush_link_stack; | |
| 26 | extern s32 patch__call_kvm_flush_link_stack_p9; | |
| 27 | extern s32 patch__memset_nocache, patch__memcpy_nocache; | |
| 28 | ||
| 29 | extern long flush_branch_caches; | |
| 30 | extern long kvm_flush_link_stack; | |
| 31 | ||
| fbcd54b1 | 32 | #ifdef __powerpc64__ |
| 1da177e4 | 33 | |
| 429d2e83 | 34 | extern char __start_interrupts[]; |
| d715e433 | 35 | extern char __end_interrupts[]; |
| 1da177e4 | 36 | |
| bd3524fe NP |
37 | #ifdef CONFIG_PPC_POWERNV |
| 38 | extern char start_real_trampolines[]; | |
| 39 | extern char end_real_trampolines[]; | |
| 40 | extern char start_virt_trampolines[]; | |
| 41 | extern char end_virt_trampolines[]; | |
| 42 | #endif | |
| 43 | ||
| a3ad84da AM |
44 | /* |
| 45 | * This assumes the kernel is never compiled -mcmodel=small or | |
| 46 | * the total .toc is always less than 64k. | |
| 47 | */ | |
| a5cab83c ME |
48 | static inline unsigned long kernel_toc_addr(void) |
| 49 | { | |
| 7e3a68be NP |
50 | #ifdef CONFIG_PPC_KERNEL_PCREL |
| 51 | BUILD_BUG(); | |
| 52 | return -1UL; | |
| 53 | #else | |
| a3ad84da AM |
54 | unsigned long toc_ptr; |
| 55 | ||
| 56 | asm volatile("mr %0, 2" : "=r" (toc_ptr)); | |
| 57 | return toc_ptr; | |
| 7e3a68be | 58 | #endif |
| a5cab83c ME |
59 | } |
| 60 | ||
| 429d2e83 MS |
61 | static inline int overlaps_interrupt_vector_text(unsigned long start, |
| 62 | unsigned long end) | |
| 63 | { | |
| 64 | unsigned long real_start, real_end; | |
| 65 | real_start = __start_interrupts - _stext; | |
| 66 | real_end = __end_interrupts - _stext; | |
| 67 | ||
| 68 | return start < (unsigned long)__va(real_end) && | |
| 69 | (unsigned long)__va(real_start) < end; | |
| 70 | } | |
| 71 | ||
| 549e8152 PM |
72 | static inline int overlaps_kernel_text(unsigned long start, unsigned long end) |
| 73 | { | |
| 74 | return start < (unsigned long)__init_end && | |
| 75 | (unsigned long)_stext < end; | |
| 76 | } | |
| 77 | ||
| f3993a03 NR |
78 | #else |
| 79 | static inline unsigned long kernel_toc_addr(void) { BUILD_BUG(); return -1UL; } | |
| 1da177e4 | 80 | #endif |
| fbcd54b1 | 81 | |
| 88ced031 | 82 | #endif /* __KERNEL__ */ |
| fbcd54b1 | 83 | #endif /* _ASM_POWERPC_SECTIONS_H */ |