xref: /openbmc/linux/arch/arm/kernel/asm-offsets.c (revision 4f3db074)
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/procinfo.h>
27 #include <asm/suspend.h>
28 #include <asm/vdso_datapage.h>
29 #include <asm/hardware/cache-l2x0.h>
30 #include <linux/kbuild.h>
31 
32 /*
33  * Make sure that the compiler and target are compatible.
34  */
35 #if defined(__APCS_26__)
36 #error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
37 #endif
38 /*
39  * GCC 3.0, 3.1: general bad code generation.
40  * GCC 3.2.0: incorrect function argument offset calculation.
41  * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c
42  *            (http://gcc.gnu.org/PR8896) and incorrect structure
43  *	      initialisation in fs/jffs2/erase.c
44  * GCC 4.8.0-4.8.2: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854
45  *	      miscompiles find_get_entry(), and can result in EXT3 and EXT4
46  *	      filesystem corruption (possibly other FS too).
47  */
48 #ifdef __GNUC__
49 #if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
50 #error Your compiler is too buggy; it is known to miscompile kernels.
51 #error    Known good compilers: 3.3, 4.x
52 #endif
53 #if GCC_VERSION >= 40800 && GCC_VERSION < 40803
54 #error Your compiler is too buggy; it is known to miscompile kernels
55 #error and result in filesystem corruption and oopses.
56 #endif
57 #endif
58 
59 int main(void)
60 {
61   DEFINE(TSK_ACTIVE_MM,		offsetof(struct task_struct, active_mm));
62 #ifdef CONFIG_CC_STACKPROTECTOR
63   DEFINE(TSK_STACK_CANARY,	offsetof(struct task_struct, stack_canary));
64 #endif
65   BLANK();
66   DEFINE(TI_FLAGS,		offsetof(struct thread_info, flags));
67   DEFINE(TI_PREEMPT,		offsetof(struct thread_info, preempt_count));
68   DEFINE(TI_ADDR_LIMIT,		offsetof(struct thread_info, addr_limit));
69   DEFINE(TI_TASK,		offsetof(struct thread_info, task));
70   DEFINE(TI_CPU,		offsetof(struct thread_info, cpu));
71   DEFINE(TI_CPU_DOMAIN,		offsetof(struct thread_info, cpu_domain));
72   DEFINE(TI_CPU_SAVE,		offsetof(struct thread_info, cpu_context));
73   DEFINE(TI_USED_CP,		offsetof(struct thread_info, used_cp));
74   DEFINE(TI_TP_VALUE,		offsetof(struct thread_info, tp_value));
75   DEFINE(TI_FPSTATE,		offsetof(struct thread_info, fpstate));
76 #ifdef CONFIG_VFP
77   DEFINE(TI_VFPSTATE,		offsetof(struct thread_info, vfpstate));
78 #ifdef CONFIG_SMP
79   DEFINE(VFP_CPU,		offsetof(union vfp_state, hard.cpu));
80 #endif
81 #endif
82 #ifdef CONFIG_ARM_THUMBEE
83   DEFINE(TI_THUMBEE_STATE,	offsetof(struct thread_info, thumbee_state));
84 #endif
85 #ifdef CONFIG_IWMMXT
86   DEFINE(TI_IWMMXT_STATE,	offsetof(struct thread_info, fpstate.iwmmxt));
87 #endif
88 #ifdef CONFIG_CRUNCH
89   DEFINE(TI_CRUNCH_STATE,	offsetof(struct thread_info, crunchstate));
90 #endif
91   BLANK();
92   DEFINE(S_R0,			offsetof(struct pt_regs, ARM_r0));
93   DEFINE(S_R1,			offsetof(struct pt_regs, ARM_r1));
94   DEFINE(S_R2,			offsetof(struct pt_regs, ARM_r2));
95   DEFINE(S_R3,			offsetof(struct pt_regs, ARM_r3));
96   DEFINE(S_R4,			offsetof(struct pt_regs, ARM_r4));
97   DEFINE(S_R5,			offsetof(struct pt_regs, ARM_r5));
98   DEFINE(S_R6,			offsetof(struct pt_regs, ARM_r6));
99   DEFINE(S_R7,			offsetof(struct pt_regs, ARM_r7));
100   DEFINE(S_R8,			offsetof(struct pt_regs, ARM_r8));
101   DEFINE(S_R9,			offsetof(struct pt_regs, ARM_r9));
102   DEFINE(S_R10,			offsetof(struct pt_regs, ARM_r10));
103   DEFINE(S_FP,			offsetof(struct pt_regs, ARM_fp));
104   DEFINE(S_IP,			offsetof(struct pt_regs, ARM_ip));
105   DEFINE(S_SP,			offsetof(struct pt_regs, ARM_sp));
106   DEFINE(S_LR,			offsetof(struct pt_regs, ARM_lr));
107   DEFINE(S_PC,			offsetof(struct pt_regs, ARM_pc));
108   DEFINE(S_PSR,			offsetof(struct pt_regs, ARM_cpsr));
109   DEFINE(S_OLD_R0,		offsetof(struct pt_regs, ARM_ORIG_r0));
110   DEFINE(S_FRAME_SIZE,		sizeof(struct pt_regs));
111   BLANK();
112 #ifdef CONFIG_CACHE_L2X0
113   DEFINE(L2X0_R_PHY_BASE,	offsetof(struct l2x0_regs, phy_base));
114   DEFINE(L2X0_R_AUX_CTRL,	offsetof(struct l2x0_regs, aux_ctrl));
115   DEFINE(L2X0_R_TAG_LATENCY,	offsetof(struct l2x0_regs, tag_latency));
116   DEFINE(L2X0_R_DATA_LATENCY,	offsetof(struct l2x0_regs, data_latency));
117   DEFINE(L2X0_R_FILTER_START,	offsetof(struct l2x0_regs, filter_start));
118   DEFINE(L2X0_R_FILTER_END,	offsetof(struct l2x0_regs, filter_end));
119   DEFINE(L2X0_R_PREFETCH_CTRL,	offsetof(struct l2x0_regs, prefetch_ctrl));
120   DEFINE(L2X0_R_PWR_CTRL,	offsetof(struct l2x0_regs, pwr_ctrl));
121   BLANK();
122 #endif
123 #ifdef CONFIG_CPU_HAS_ASID
124   DEFINE(MM_CONTEXT_ID,		offsetof(struct mm_struct, context.id.counter));
125   BLANK();
126 #endif
127   DEFINE(VMA_VM_MM,		offsetof(struct vm_area_struct, vm_mm));
128   DEFINE(VMA_VM_FLAGS,		offsetof(struct vm_area_struct, vm_flags));
129   BLANK();
130   DEFINE(VM_EXEC,	       	VM_EXEC);
131   BLANK();
132   DEFINE(PAGE_SZ,	       	PAGE_SIZE);
133   BLANK();
134   DEFINE(SYS_ERROR0,		0x9f0000);
135   BLANK();
136   DEFINE(SIZEOF_MACHINE_DESC,	sizeof(struct machine_desc));
137   DEFINE(MACHINFO_TYPE,		offsetof(struct machine_desc, nr));
138   DEFINE(MACHINFO_NAME,		offsetof(struct machine_desc, name));
139   BLANK();
140   DEFINE(PROC_INFO_SZ,		sizeof(struct proc_info_list));
141   DEFINE(PROCINFO_INITFUNC,	offsetof(struct proc_info_list, __cpu_flush));
142   DEFINE(PROCINFO_MM_MMUFLAGS,	offsetof(struct proc_info_list, __cpu_mm_mmu_flags));
143   DEFINE(PROCINFO_IO_MMUFLAGS,	offsetof(struct proc_info_list, __cpu_io_mmu_flags));
144   BLANK();
145 #ifdef MULTI_DABORT
146   DEFINE(PROCESSOR_DABT_FUNC,	offsetof(struct processor, _data_abort));
147 #endif
148 #ifdef MULTI_PABORT
149   DEFINE(PROCESSOR_PABT_FUNC,	offsetof(struct processor, _prefetch_abort));
150 #endif
151 #ifdef MULTI_CPU
152   DEFINE(CPU_SLEEP_SIZE,	offsetof(struct processor, suspend_size));
153   DEFINE(CPU_DO_SUSPEND,	offsetof(struct processor, do_suspend));
154   DEFINE(CPU_DO_RESUME,		offsetof(struct processor, do_resume));
155 #endif
156 #ifdef MULTI_CACHE
157   DEFINE(CACHE_FLUSH_KERN_ALL,	offsetof(struct cpu_cache_fns, flush_kern_all));
158 #endif
159 #ifdef CONFIG_ARM_CPU_SUSPEND
160   DEFINE(SLEEP_SAVE_SP_SZ,	sizeof(struct sleep_save_sp));
161   DEFINE(SLEEP_SAVE_SP_PHYS,	offsetof(struct sleep_save_sp, save_ptr_stash_phys));
162   DEFINE(SLEEP_SAVE_SP_VIRT,	offsetof(struct sleep_save_sp, save_ptr_stash));
163 #endif
164   BLANK();
165   DEFINE(DMA_BIDIRECTIONAL,	DMA_BIDIRECTIONAL);
166   DEFINE(DMA_TO_DEVICE,		DMA_TO_DEVICE);
167   DEFINE(DMA_FROM_DEVICE,	DMA_FROM_DEVICE);
168   BLANK();
169   DEFINE(CACHE_WRITEBACK_ORDER, __CACHE_WRITEBACK_ORDER);
170   DEFINE(CACHE_WRITEBACK_GRANULE, __CACHE_WRITEBACK_GRANULE);
171   BLANK();
172 #ifdef CONFIG_KVM_ARM_HOST
173   DEFINE(VCPU_KVM,		offsetof(struct kvm_vcpu, kvm));
174   DEFINE(VCPU_MIDR,		offsetof(struct kvm_vcpu, arch.midr));
175   DEFINE(VCPU_CP15,		offsetof(struct kvm_vcpu, arch.cp15));
176   DEFINE(VCPU_VFP_GUEST,	offsetof(struct kvm_vcpu, arch.vfp_guest));
177   DEFINE(VCPU_VFP_HOST,		offsetof(struct kvm_vcpu, arch.host_cpu_context));
178   DEFINE(VCPU_REGS,		offsetof(struct kvm_vcpu, arch.regs));
179   DEFINE(VCPU_USR_REGS,		offsetof(struct kvm_vcpu, arch.regs.usr_regs));
180   DEFINE(VCPU_SVC_REGS,		offsetof(struct kvm_vcpu, arch.regs.svc_regs));
181   DEFINE(VCPU_ABT_REGS,		offsetof(struct kvm_vcpu, arch.regs.abt_regs));
182   DEFINE(VCPU_UND_REGS,		offsetof(struct kvm_vcpu, arch.regs.und_regs));
183   DEFINE(VCPU_IRQ_REGS,		offsetof(struct kvm_vcpu, arch.regs.irq_regs));
184   DEFINE(VCPU_FIQ_REGS,		offsetof(struct kvm_vcpu, arch.regs.fiq_regs));
185   DEFINE(VCPU_PC,		offsetof(struct kvm_vcpu, arch.regs.usr_regs.ARM_pc));
186   DEFINE(VCPU_CPSR,		offsetof(struct kvm_vcpu, arch.regs.usr_regs.ARM_cpsr));
187   DEFINE(VCPU_HCR,		offsetof(struct kvm_vcpu, arch.hcr));
188   DEFINE(VCPU_IRQ_LINES,	offsetof(struct kvm_vcpu, arch.irq_lines));
189   DEFINE(VCPU_HSR,		offsetof(struct kvm_vcpu, arch.fault.hsr));
190   DEFINE(VCPU_HxFAR,		offsetof(struct kvm_vcpu, arch.fault.hxfar));
191   DEFINE(VCPU_HPFAR,		offsetof(struct kvm_vcpu, arch.fault.hpfar));
192   DEFINE(VCPU_HYP_PC,		offsetof(struct kvm_vcpu, arch.fault.hyp_pc));
193   DEFINE(VCPU_VGIC_CPU,		offsetof(struct kvm_vcpu, arch.vgic_cpu));
194   DEFINE(VGIC_V2_CPU_HCR,	offsetof(struct vgic_cpu, vgic_v2.vgic_hcr));
195   DEFINE(VGIC_V2_CPU_VMCR,	offsetof(struct vgic_cpu, vgic_v2.vgic_vmcr));
196   DEFINE(VGIC_V2_CPU_MISR,	offsetof(struct vgic_cpu, vgic_v2.vgic_misr));
197   DEFINE(VGIC_V2_CPU_EISR,	offsetof(struct vgic_cpu, vgic_v2.vgic_eisr));
198   DEFINE(VGIC_V2_CPU_ELRSR,	offsetof(struct vgic_cpu, vgic_v2.vgic_elrsr));
199   DEFINE(VGIC_V2_CPU_APR,	offsetof(struct vgic_cpu, vgic_v2.vgic_apr));
200   DEFINE(VGIC_V2_CPU_LR,	offsetof(struct vgic_cpu, vgic_v2.vgic_lr));
201   DEFINE(VGIC_CPU_NR_LR,	offsetof(struct vgic_cpu, nr_lr));
202   DEFINE(VCPU_TIMER_CNTV_CTL,	offsetof(struct kvm_vcpu, arch.timer_cpu.cntv_ctl));
203   DEFINE(VCPU_TIMER_CNTV_CVAL,	offsetof(struct kvm_vcpu, arch.timer_cpu.cntv_cval));
204   DEFINE(KVM_TIMER_CNTVOFF,	offsetof(struct kvm, arch.timer.cntvoff));
205   DEFINE(KVM_TIMER_ENABLED,	offsetof(struct kvm, arch.timer.enabled));
206   DEFINE(KVM_VGIC_VCTRL,	offsetof(struct kvm, arch.vgic.vctrl_base));
207   DEFINE(KVM_VTTBR,		offsetof(struct kvm, arch.vttbr));
208 #endif
209   BLANK();
210 #ifdef CONFIG_VDSO
211   DEFINE(VDSO_DATA_SIZE,	sizeof(union vdso_data_store));
212 #endif
213   return 0;
214 }
215