1 /* 1 /*
2 * gdb helper commands and functions for Linux 2 * gdb helper commands and functions for Linux kernel debugging
3 * 3 *
4 * Kernel constants derived from include file 4 * Kernel constants derived from include files.
5 * 5 *
6 * Copyright (c) 2016 Linaro Ltd 6 * Copyright (c) 2016 Linaro Ltd
7 * 7 *
8 * Authors: 8 * Authors:
9 * Kieran Bingham <kieran.bingham@linaro.org> 9 * Kieran Bingham <kieran.bingham@linaro.org>
10 * 10 *
11 * This work is licensed under the terms of th 11 * This work is licensed under the terms of the GNU GPL version 2.
12 * 12 *
13 */ 13 */
14 14
15 #include <linux/clk-provider.h> 15 #include <linux/clk-provider.h>
16 #include <linux/fs.h> 16 #include <linux/fs.h>
17 #include <linux/hrtimer.h> 17 #include <linux/hrtimer.h>
18 #include <linux/irq.h> 18 #include <linux/irq.h>
19 #include <linux/mount.h> 19 #include <linux/mount.h>
20 #include <linux/of_fdt.h> 20 #include <linux/of_fdt.h>
21 #include <linux/page_ext.h> 21 #include <linux/page_ext.h>
22 #include <linux/radix-tree.h> 22 #include <linux/radix-tree.h>
23 #include <linux/slab.h> 23 #include <linux/slab.h>
24 #include <linux/threads.h> 24 #include <linux/threads.h>
25 #include <linux/vmalloc.h> 25 #include <linux/vmalloc.h>
26 26
27 /* We need to stringify expanded macros so tha 27 /* We need to stringify expanded macros so that they can be parsed */
28 28
29 #define STRING(x) #x 29 #define STRING(x) #x
30 #define XSTRING(x) STRING(x) 30 #define XSTRING(x) STRING(x)
31 31
32 #define LX_VALUE(x) LX_##x = x 32 #define LX_VALUE(x) LX_##x = x
33 #define LX_GDBPARSED(x) LX_##x = gdb.parse_and 33 #define LX_GDBPARSED(x) LX_##x = gdb.parse_and_eval(XSTRING(x))
34 34
35 /* 35 /*
36 * IS_ENABLED generates (a || b) which is not 36 * IS_ENABLED generates (a || b) which is not compatible with python
37 * We can only switch on configuration items w 37 * We can only switch on configuration items we know are available
38 * Therefore - IS_BUILTIN() is more appropriat 38 * Therefore - IS_BUILTIN() is more appropriate
39 */ 39 */
40 #define LX_CONFIG(x) LX_##x = IS_BUILTIN(x) 40 #define LX_CONFIG(x) LX_##x = IS_BUILTIN(x)
41 41
42 /* The build system will take care of deleting 42 /* The build system will take care of deleting everything above this marker */
43 <!-- end-c-headers --> 43 <!-- end-c-headers -->
44 44
45 import gdb 45 import gdb
46 46
47 LX_CONFIG(CONFIG_DEBUG_INFO_REDUCED) 47 LX_CONFIG(CONFIG_DEBUG_INFO_REDUCED)
48 48
49 /* linux/clk-provider.h */ 49 /* linux/clk-provider.h */
50 if IS_BUILTIN(CONFIG_COMMON_CLK): 50 if IS_BUILTIN(CONFIG_COMMON_CLK):
51 LX_GDBPARSED(CLK_GET_RATE_NOCACHE) 51 LX_GDBPARSED(CLK_GET_RATE_NOCACHE)
52 52
53 /* linux/fs.h */ 53 /* linux/fs.h */
54 LX_GDBPARSED(SB_RDONLY) 54 LX_GDBPARSED(SB_RDONLY)
55 LX_GDBPARSED(SB_SYNCHRONOUS) 55 LX_GDBPARSED(SB_SYNCHRONOUS)
56 LX_GDBPARSED(SB_MANDLOCK) 56 LX_GDBPARSED(SB_MANDLOCK)
57 LX_GDBPARSED(SB_DIRSYNC) 57 LX_GDBPARSED(SB_DIRSYNC)
58 LX_GDBPARSED(SB_NOATIME) 58 LX_GDBPARSED(SB_NOATIME)
59 LX_GDBPARSED(SB_NODIRATIME) 59 LX_GDBPARSED(SB_NODIRATIME)
60 60
61 /* linux/htimer.h */ 61 /* linux/htimer.h */
62 LX_GDBPARSED(hrtimer_resolution) 62 LX_GDBPARSED(hrtimer_resolution)
63 63
64 /* linux/irq.h */ 64 /* linux/irq.h */
65 LX_GDBPARSED(IRQD_LEVEL) 65 LX_GDBPARSED(IRQD_LEVEL)
66 LX_GDBPARSED(IRQ_HIDDEN) 66 LX_GDBPARSED(IRQ_HIDDEN)
67 67
68 /* linux/module.h */ 68 /* linux/module.h */
69 if IS_BUILTIN(CONFIG_MODULES): 69 if IS_BUILTIN(CONFIG_MODULES):
70 LX_GDBPARSED(MOD_TEXT) 70 LX_GDBPARSED(MOD_TEXT)
71 LX_GDBPARSED(MOD_DATA) 71 LX_GDBPARSED(MOD_DATA)
72 LX_GDBPARSED(MOD_RODATA) 72 LX_GDBPARSED(MOD_RODATA)
73 LX_GDBPARSED(MOD_RO_AFTER_INIT) 73 LX_GDBPARSED(MOD_RO_AFTER_INIT)
74 74
75 /* linux/mount.h */ 75 /* linux/mount.h */
76 LX_VALUE(MNT_NOSUID) 76 LX_VALUE(MNT_NOSUID)
77 LX_VALUE(MNT_NODEV) 77 LX_VALUE(MNT_NODEV)
78 LX_VALUE(MNT_NOEXEC) 78 LX_VALUE(MNT_NOEXEC)
79 LX_VALUE(MNT_NOATIME) 79 LX_VALUE(MNT_NOATIME)
80 LX_VALUE(MNT_NODIRATIME) 80 LX_VALUE(MNT_NODIRATIME)
81 LX_VALUE(MNT_RELATIME) 81 LX_VALUE(MNT_RELATIME)
82 82
83 /* linux/threads.h */ 83 /* linux/threads.h */
84 LX_VALUE(NR_CPUS) 84 LX_VALUE(NR_CPUS)
85 85
86 /* linux/of_fdt.h> */ 86 /* linux/of_fdt.h> */
87 LX_VALUE(OF_DT_HEADER) 87 LX_VALUE(OF_DT_HEADER)
88 88
89 /* linux/radix-tree.h */ 89 /* linux/radix-tree.h */
90 LX_GDBPARSED(RADIX_TREE_ENTRY_MASK) 90 LX_GDBPARSED(RADIX_TREE_ENTRY_MASK)
91 LX_GDBPARSED(RADIX_TREE_INTERNAL_NODE) 91 LX_GDBPARSED(RADIX_TREE_INTERNAL_NODE)
92 LX_GDBPARSED(RADIX_TREE_MAP_SIZE) 92 LX_GDBPARSED(RADIX_TREE_MAP_SIZE)
93 LX_GDBPARSED(RADIX_TREE_MAP_SHIFT) 93 LX_GDBPARSED(RADIX_TREE_MAP_SHIFT)
94 LX_GDBPARSED(RADIX_TREE_MAP_MASK) 94 LX_GDBPARSED(RADIX_TREE_MAP_MASK)
95 95
96 /* linux/vmalloc.h */ 96 /* linux/vmalloc.h */
97 LX_VALUE(VM_IOREMAP) 97 LX_VALUE(VM_IOREMAP)
98 LX_VALUE(VM_ALLOC) 98 LX_VALUE(VM_ALLOC)
99 LX_VALUE(VM_MAP) 99 LX_VALUE(VM_MAP)
100 LX_VALUE(VM_USERMAP) 100 LX_VALUE(VM_USERMAP)
101 LX_VALUE(VM_DMA_COHERENT) 101 LX_VALUE(VM_DMA_COHERENT)
102 102
103 /* linux/page_ext.h */ 103 /* linux/page_ext.h */
104 if IS_BUILTIN(CONFIG_PAGE_OWNER): 104 if IS_BUILTIN(CONFIG_PAGE_OWNER):
105 LX_GDBPARSED(PAGE_EXT_OWNER) 105 LX_GDBPARSED(PAGE_EXT_OWNER)
106 LX_GDBPARSED(PAGE_EXT_OWNER_ALLOCATED) 106 LX_GDBPARSED(PAGE_EXT_OWNER_ALLOCATED)
107 107
108 /* linux/slab.h */ 108 /* linux/slab.h */
109 LX_GDBPARSED(SLAB_RED_ZONE) 109 LX_GDBPARSED(SLAB_RED_ZONE)
110 LX_GDBPARSED(SLAB_POISON) 110 LX_GDBPARSED(SLAB_POISON)
111 LX_GDBPARSED(SLAB_KMALLOC) 111 LX_GDBPARSED(SLAB_KMALLOC)
112 LX_GDBPARSED(SLAB_HWCACHE_ALIGN) 112 LX_GDBPARSED(SLAB_HWCACHE_ALIGN)
113 LX_GDBPARSED(SLAB_CACHE_DMA) 113 LX_GDBPARSED(SLAB_CACHE_DMA)
114 LX_GDBPARSED(SLAB_CACHE_DMA32) 114 LX_GDBPARSED(SLAB_CACHE_DMA32)
115 LX_GDBPARSED(SLAB_STORE_USER) 115 LX_GDBPARSED(SLAB_STORE_USER)
116 LX_GDBPARSED(SLAB_PANIC) 116 LX_GDBPARSED(SLAB_PANIC)
117 117
118 /* Kernel Configs */ 118 /* Kernel Configs */
119 LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS) 119 LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS)
120 LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST 120 LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST)
121 LX_CONFIG(CONFIG_HIGH_RES_TIMERS) 121 LX_CONFIG(CONFIG_HIGH_RES_TIMERS)
122 LX_CONFIG(CONFIG_NR_CPUS) 122 LX_CONFIG(CONFIG_NR_CPUS)
123 LX_CONFIG(CONFIG_OF) 123 LX_CONFIG(CONFIG_OF)
124 LX_CONFIG(CONFIG_TICK_ONESHOT) 124 LX_CONFIG(CONFIG_TICK_ONESHOT)
125 LX_CONFIG(CONFIG_GENERIC_IRQ_SHOW_LEVEL) 125 LX_CONFIG(CONFIG_GENERIC_IRQ_SHOW_LEVEL)
126 LX_CONFIG(CONFIG_X86_LOCAL_APIC) 126 LX_CONFIG(CONFIG_X86_LOCAL_APIC)
127 LX_CONFIG(CONFIG_SMP) 127 LX_CONFIG(CONFIG_SMP)
128 LX_CONFIG(CONFIG_X86_THERMAL_VECTOR) 128 LX_CONFIG(CONFIG_X86_THERMAL_VECTOR)
129 LX_CONFIG(CONFIG_X86_MCE_THRESHOLD) 129 LX_CONFIG(CONFIG_X86_MCE_THRESHOLD)
130 LX_CONFIG(CONFIG_X86_MCE_AMD) 130 LX_CONFIG(CONFIG_X86_MCE_AMD)
131 LX_CONFIG(CONFIG_X86_MCE) 131 LX_CONFIG(CONFIG_X86_MCE)
132 LX_CONFIG(CONFIG_X86_IO_APIC) 132 LX_CONFIG(CONFIG_X86_IO_APIC)
133 /* !! 133 LX_CONFIG(CONFIG_HAVE_KVM)
134 * CONFIG_KVM can be "m" but it affects common <<
135 * as a proxy for IS_ENABLED(CONFIG_KVM). <<
136 */ <<
137 LX_CONFIG_KVM = IS_BUILTIN(CONFIG_KVM_COMMON) <<
138 LX_CONFIG(CONFIG_NUMA) 134 LX_CONFIG(CONFIG_NUMA)
139 LX_CONFIG(CONFIG_ARM64) 135 LX_CONFIG(CONFIG_ARM64)
140 LX_CONFIG(CONFIG_ARM64_4K_PAGES) 136 LX_CONFIG(CONFIG_ARM64_4K_PAGES)
141 LX_CONFIG(CONFIG_ARM64_16K_PAGES) 137 LX_CONFIG(CONFIG_ARM64_16K_PAGES)
142 LX_CONFIG(CONFIG_ARM64_64K_PAGES) 138 LX_CONFIG(CONFIG_ARM64_64K_PAGES)
143 if IS_BUILTIN(CONFIG_ARM64): 139 if IS_BUILTIN(CONFIG_ARM64):
144 LX_VALUE(CONFIG_ARM64_PA_BITS) 140 LX_VALUE(CONFIG_ARM64_PA_BITS)
145 LX_VALUE(CONFIG_ARM64_VA_BITS) 141 LX_VALUE(CONFIG_ARM64_VA_BITS)
146 LX_VALUE(CONFIG_PAGE_SHIFT) !! 142 LX_VALUE(CONFIG_ARM64_PAGE_SHIFT)
147 LX_VALUE(CONFIG_ARCH_FORCE_MAX_ORDER) 143 LX_VALUE(CONFIG_ARCH_FORCE_MAX_ORDER)
148 LX_CONFIG(CONFIG_SPARSEMEM) 144 LX_CONFIG(CONFIG_SPARSEMEM)
149 LX_CONFIG(CONFIG_SPARSEMEM_EXTREME) 145 LX_CONFIG(CONFIG_SPARSEMEM_EXTREME)
150 LX_CONFIG(CONFIG_SPARSEMEM_VMEMMAP) 146 LX_CONFIG(CONFIG_SPARSEMEM_VMEMMAP)
151 LX_CONFIG(CONFIG_KASAN) 147 LX_CONFIG(CONFIG_KASAN)
152 LX_CONFIG(CONFIG_KASAN_GENERIC) 148 LX_CONFIG(CONFIG_KASAN_GENERIC)
153 LX_CONFIG(CONFIG_KASAN_SW_TAGS) 149 LX_CONFIG(CONFIG_KASAN_SW_TAGS)
154 LX_CONFIG(CONFIG_KASAN_HW_TAGS) 150 LX_CONFIG(CONFIG_KASAN_HW_TAGS)
155 if IS_BUILTIN(CONFIG_KASAN_GENERIC) or IS_BUIL 151 if IS_BUILTIN(CONFIG_KASAN_GENERIC) or IS_BUILTIN(CONFIG_KASAN_SW_TAGS):
156 LX_VALUE(CONFIG_KASAN_SHADOW_OFFSET) 152 LX_VALUE(CONFIG_KASAN_SHADOW_OFFSET)
157 LX_CONFIG(CONFIG_VMAP_STACK) 153 LX_CONFIG(CONFIG_VMAP_STACK)
158 if IS_BUILTIN(CONFIG_NUMA): 154 if IS_BUILTIN(CONFIG_NUMA):
159 LX_VALUE(CONFIG_NODES_SHIFT) 155 LX_VALUE(CONFIG_NODES_SHIFT)
160 LX_CONFIG(CONFIG_DEBUG_VIRTUAL) 156 LX_CONFIG(CONFIG_DEBUG_VIRTUAL)
161 LX_CONFIG(CONFIG_STACKDEPOT) 157 LX_CONFIG(CONFIG_STACKDEPOT)
162 LX_CONFIG(CONFIG_PAGE_OWNER) 158 LX_CONFIG(CONFIG_PAGE_OWNER)
163 LX_CONFIG(CONFIG_SLUB_DEBUG) 159 LX_CONFIG(CONFIG_SLUB_DEBUG)
164 LX_CONFIG(CONFIG_SLAB_FREELIST_HARDENED) 160 LX_CONFIG(CONFIG_SLAB_FREELIST_HARDENED)
165 LX_CONFIG(CONFIG_MMU) 161 LX_CONFIG(CONFIG_MMU)
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