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