xref: /openbmc/linux/arch/arm/kernel/asm-offsets.c (revision f220d3eb)
1 /*
2  * Copyright (C) 1995-2003 Russell King
3  *               2001-2002 Keith Owens
4  *
5  * Generate definitions needed by assembly language modules.
6  * This code generates raw asm output which is post-processed to extract
7  * and format the required data.
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  */
13 #include <linux/compiler.h>
14 #include <linux/sched.h>
15 #include <linux/mm.h>
16 #include <linux/dma-mapping.h>
17 #ifdef CONFIG_KVM_ARM_HOST
18 #include <linux/kvm_host.h>
19 #endif
20 #include <asm/cacheflush.h>
21 #include <asm/glue-df.h>
22 #include <asm/glue-pf.h>
23 #include <asm/mach/arch.h>
24 #include <asm/thread_info.h>
25 #include <asm/memory.h>
26 #include <asm/mpu.h>
27 #include <asm/procinfo.h>
28 #include <asm/suspend.h>
29 #include <asm/vdso_datapage.h>
30 #include <asm/hardware/cache-l2x0.h>
31 #include <linux/kbuild.h>
32 #include "signal.h"
33 
34 /*
35  * Make sure that the compiler and target are compatible.
36  */
37 #if defined(__APCS_26__)
38 #error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
39 #endif
40 /*
41  * GCC 4.8.0-4.8.2: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854
42  *	      miscompiles find_get_entry(), and can result in EXT3 and EXT4
43  *	      filesystem corruption (possibly other FS too).
44  */
45 #if defined(GCC_VERSION) && GCC_VERSION >= 40800 && GCC_VERSION < 40803
46 #error Your compiler is too buggy; it is known to miscompile kernels
47 #error and result in filesystem corruption and oopses.
48 #endif
49 
50 int main(void)
51 {
52   DEFINE(TSK_ACTIVE_MM,		offsetof(struct task_struct, active_mm));
53 #ifdef CONFIG_STACKPROTECTOR
54   DEFINE(TSK_STACK_CANARY,	offsetof(struct task_struct, stack_canary));
55 #endif
56   BLANK();
57   DEFINE(TI_FLAGS,		offsetof(struct thread_info, flags));
58   DEFINE(TI_PREEMPT,		offsetof(struct thread_info, preempt_count));
59   DEFINE(TI_ADDR_LIMIT,		offsetof(struct thread_info, addr_limit));
60   DEFINE(TI_TASK,		offsetof(struct thread_info, task));
61   DEFINE(TI_CPU,		offsetof(struct thread_info, cpu));
62   DEFINE(TI_CPU_DOMAIN,		offsetof(struct thread_info, cpu_domain));
63   DEFINE(TI_CPU_SAVE,		offsetof(struct thread_info, cpu_context));
64   DEFINE(TI_USED_CP,		offsetof(struct thread_info, used_cp));
65   DEFINE(TI_TP_VALUE,		offsetof(struct thread_info, tp_value));
66   DEFINE(TI_FPSTATE,		offsetof(struct thread_info, fpstate));
67 #ifdef CONFIG_VFP
68   DEFINE(TI_VFPSTATE,		offsetof(struct thread_info, vfpstate));
69 #ifdef CONFIG_SMP
70   DEFINE(VFP_CPU,		offsetof(union vfp_state, hard.cpu));
71 #endif
72 #endif
73 #ifdef CONFIG_ARM_THUMBEE
74   DEFINE(TI_THUMBEE_STATE,	offsetof(struct thread_info, thumbee_state));
75 #endif
76 #ifdef CONFIG_IWMMXT
77   DEFINE(TI_IWMMXT_STATE,	offsetof(struct thread_info, fpstate.iwmmxt));
78 #endif
79 #ifdef CONFIG_CRUNCH
80   DEFINE(TI_CRUNCH_STATE,	offsetof(struct thread_info, crunchstate));
81 #endif
82   BLANK();
83   DEFINE(S_R0,			offsetof(struct pt_regs, ARM_r0));
84   DEFINE(S_R1,			offsetof(struct pt_regs, ARM_r1));
85   DEFINE(S_R2,			offsetof(struct pt_regs, ARM_r2));
86   DEFINE(S_R3,			offsetof(struct pt_regs, ARM_r3));
87   DEFINE(S_R4,			offsetof(struct pt_regs, ARM_r4));
88   DEFINE(S_R5,			offsetof(struct pt_regs, ARM_r5));
89   DEFINE(S_R6,			offsetof(struct pt_regs, ARM_r6));
90   DEFINE(S_R7,			offsetof(struct pt_regs, ARM_r7));
91   DEFINE(S_R8,			offsetof(struct pt_regs, ARM_r8));
92   DEFINE(S_R9,			offsetof(struct pt_regs, ARM_r9));
93   DEFINE(S_R10,			offsetof(struct pt_regs, ARM_r10));
94   DEFINE(S_FP,			offsetof(struct pt_regs, ARM_fp));
95   DEFINE(S_IP,			offsetof(struct pt_regs, ARM_ip));
96   DEFINE(S_SP,			offsetof(struct pt_regs, ARM_sp));
97   DEFINE(S_LR,			offsetof(struct pt_regs, ARM_lr));
98   DEFINE(S_PC,			offsetof(struct pt_regs, ARM_pc));
99   DEFINE(S_PSR,			offsetof(struct pt_regs, ARM_cpsr));
100   DEFINE(S_OLD_R0,		offsetof(struct pt_regs, ARM_ORIG_r0));
101   DEFINE(PT_REGS_SIZE,		sizeof(struct pt_regs));
102   DEFINE(SVC_DACR,		offsetof(struct svc_pt_regs, dacr));
103   DEFINE(SVC_ADDR_LIMIT,	offsetof(struct svc_pt_regs, addr_limit));
104   DEFINE(SVC_REGS_SIZE,		sizeof(struct svc_pt_regs));
105   BLANK();
106   DEFINE(SIGFRAME_RC3_OFFSET,	offsetof(struct sigframe, retcode[3]));
107   DEFINE(RT_SIGFRAME_RC3_OFFSET, offsetof(struct rt_sigframe, sig.retcode[3]));
108   BLANK();
109 #ifdef CONFIG_CACHE_L2X0
110   DEFINE(L2X0_R_PHY_BASE,	offsetof(struct l2x0_regs, phy_base));
111   DEFINE(L2X0_R_AUX_CTRL,	offsetof(struct l2x0_regs, aux_ctrl));
112   DEFINE(L2X0_R_TAG_LATENCY,	offsetof(struct l2x0_regs, tag_latency));
113   DEFINE(L2X0_R_DATA_LATENCY,	offsetof(struct l2x0_regs, data_latency));
114   DEFINE(L2X0_R_FILTER_START,	offsetof(struct l2x0_regs, filter_start));
115   DEFINE(L2X0_R_FILTER_END,	offsetof(struct l2x0_regs, filter_end));
116   DEFINE(L2X0_R_PREFETCH_CTRL,	offsetof(struct l2x0_regs, prefetch_ctrl));
117   DEFINE(L2X0_R_PWR_CTRL,	offsetof(struct l2x0_regs, pwr_ctrl));
118   BLANK();
119 #endif
120 #ifdef CONFIG_CPU_HAS_ASID
121   DEFINE(MM_CONTEXT_ID,		offsetof(struct mm_struct, context.id.counter));
122   BLANK();
123 #endif
124   DEFINE(VMA_VM_MM,		offsetof(struct vm_area_struct, vm_mm));
125   DEFINE(VMA_VM_FLAGS,		offsetof(struct vm_area_struct, vm_flags));
126   BLANK();
127   DEFINE(VM_EXEC,	       	VM_EXEC);
128   BLANK();
129   DEFINE(PAGE_SZ,	       	PAGE_SIZE);
130   BLANK();
131   DEFINE(SYS_ERROR0,		0x9f0000);
132   BLANK();
133   DEFINE(SIZEOF_MACHINE_DESC,	sizeof(struct machine_desc));
134   DEFINE(MACHINFO_TYPE,		offsetof(struct machine_desc, nr));
135   DEFINE(MACHINFO_NAME,		offsetof(struct machine_desc, name));
136   BLANK();
137   DEFINE(PROC_INFO_SZ,		sizeof(struct proc_info_list));
138   DEFINE(PROCINFO_INITFUNC,	offsetof(struct proc_info_list, __cpu_flush));
139   DEFINE(PROCINFO_MM_MMUFLAGS,	offsetof(struct proc_info_list, __cpu_mm_mmu_flags));
140   DEFINE(PROCINFO_IO_MMUFLAGS,	offsetof(struct proc_info_list, __cpu_io_mmu_flags));
141   BLANK();
142 #ifdef MULTI_DABORT
143   DEFINE(PROCESSOR_DABT_FUNC,	offsetof(struct processor, _data_abort));
144 #endif
145 #ifdef MULTI_PABORT
146   DEFINE(PROCESSOR_PABT_FUNC,	offsetof(struct processor, _prefetch_abort));
147 #endif
148 #ifdef MULTI_CPU
149   DEFINE(CPU_SLEEP_SIZE,	offsetof(struct processor, suspend_size));
150   DEFINE(CPU_DO_SUSPEND,	offsetof(struct processor, do_suspend));
151   DEFINE(CPU_DO_RESUME,		offsetof(struct processor, do_resume));
152 #endif
153 #ifdef MULTI_CACHE
154   DEFINE(CACHE_FLUSH_KERN_ALL,	offsetof(struct cpu_cache_fns, flush_kern_all));
155 #endif
156 #ifdef CONFIG_ARM_CPU_SUSPEND
157   DEFINE(SLEEP_SAVE_SP_SZ,	sizeof(struct sleep_save_sp));
158   DEFINE(SLEEP_SAVE_SP_PHYS,	offsetof(struct sleep_save_sp, save_ptr_stash_phys));
159   DEFINE(SLEEP_SAVE_SP_VIRT,	offsetof(struct sleep_save_sp, save_ptr_stash));
160 #endif
161   BLANK();
162   DEFINE(DMA_BIDIRECTIONAL,	DMA_BIDIRECTIONAL);
163   DEFINE(DMA_TO_DEVICE,		DMA_TO_DEVICE);
164   DEFINE(DMA_FROM_DEVICE,	DMA_FROM_DEVICE);
165   BLANK();
166   DEFINE(CACHE_WRITEBACK_ORDER, __CACHE_WRITEBACK_ORDER);
167   DEFINE(CACHE_WRITEBACK_GRANULE, __CACHE_WRITEBACK_GRANULE);
168   BLANK();
169 #ifdef CONFIG_KVM_ARM_HOST
170   DEFINE(VCPU_GUEST_CTXT,	offsetof(struct kvm_vcpu, arch.ctxt));
171   DEFINE(VCPU_HOST_CTXT,	offsetof(struct kvm_vcpu, arch.host_cpu_context));
172   DEFINE(CPU_CTXT_VFP,		offsetof(struct kvm_cpu_context, vfp));
173   DEFINE(CPU_CTXT_GP_REGS,	offsetof(struct kvm_cpu_context, gp_regs));
174   DEFINE(GP_REGS_USR,		offsetof(struct kvm_regs, usr_regs));
175 #endif
176   BLANK();
177 #ifdef CONFIG_VDSO
178   DEFINE(VDSO_DATA_SIZE,	sizeof(union vdso_data_store));
179 #endif
180   BLANK();
181 #ifdef CONFIG_ARM_MPU
182   DEFINE(MPU_RNG_INFO_RNGS,	offsetof(struct mpu_rgn_info, rgns));
183   DEFINE(MPU_RNG_INFO_USED,	offsetof(struct mpu_rgn_info, used));
184 
185   DEFINE(MPU_RNG_SIZE,		sizeof(struct mpu_rgn));
186   DEFINE(MPU_RGN_DRBAR,	offsetof(struct mpu_rgn, drbar));
187   DEFINE(MPU_RGN_DRSR,	offsetof(struct mpu_rgn, drsr));
188   DEFINE(MPU_RGN_DRACR,	offsetof(struct mpu_rgn, dracr));
189   DEFINE(MPU_RGN_PRBAR,	offsetof(struct mpu_rgn, prbar));
190   DEFINE(MPU_RGN_PRLAR,	offsetof(struct mpu_rgn, prlar));
191 #endif
192   return 0;
193 }
194