aboutsummaryrefslogtreecommitdiff
path: root/arch/i386/kernel/asm-offsets_32.c
blob: 8029742c0fc127b40cc0249b1abc60a54ab42617 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
/*
 * Generate definitions needed by assembly language modules.
 * This code generates raw asm output which is post-processed
 * to extract and format the required data.
 */

#include <linux/crypto.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/personality.h>
#include <linux/suspend.h>
#include <asm/ucontext.h>
#include "sigframe_32.h"
#include <asm/pgtable.h>
#include <asm/fixmap.h>
#include <asm/processor.h>
#include <asm/thread_info.h>
#include <asm/elf.h>

#include <xen/interface/xen.h>

#ifdef CONFIG_LGUEST_GUEST
#include <linux/lguest.h>
#include "../../../drivers/lguest/lg.h"
#endif

#define DEFINE(sym, val) \
        asm volatile("\n->" #sym " %0 " #val : : "i" (val))

#define BLANK() asm volatile("\n->" : : )

#define OFFSET(sym, str, mem) \
	DEFINE(sym, offsetof(struct str, mem));

/* workaround for a warning with -Wmissing-prototypes */
void foo(void);

void foo(void)
{
	OFFSET(SIGCONTEXT_eax, sigcontext, eax);
	OFFSET(SIGCONTEXT_ebx, sigcontext, ebx);
	OFFSET(SIGCONTEXT_ecx, sigcontext, ecx);
	OFFSET(SIGCONTEXT_edx, sigcontext, edx);
	OFFSET(SIGCONTEXT_esi, sigcontext, esi);
	OFFSET(SIGCONTEXT_edi, sigcontext, edi);
	OFFSET(SIGCONTEXT_ebp, sigcontext, ebp);
	OFFSET(SIGCONTEXT_esp, sigcontext, esp);
	OFFSET(SIGCONTEXT_eip, sigcontext, eip);
	BLANK();

	OFFSET(CPUINFO_x86, cpuinfo_x86, x86);
	OFFSET(CPUINFO_x86_vendor, cpuinfo_x86, x86_vendor);
	OFFSET(CPUINFO_x86_model, cpuinfo_x86, x86_model);
	OFFSET(CPUINFO_x86_mask, cpuinfo_x86, x86_mask);
	OFFSET(CPUINFO_hard_math, cpuinfo_x86, hard_math);
	OFFSET(CPUINFO_cpuid_level, cpuinfo_x86, cpuid_level);
	OFFSET(CPUINFO_x86_capability, cpuinfo_x86, x86_capability);
	OFFSET(CPUINFO_x86_vendor_id, cpuinfo_x86, x86_vendor_id);
	BLANK();

	OFFSET(TI_task, thread_info, task);
	OFFSET(TI_exec_domain, thread_info, exec_domain);
	OFFSET(TI_flags, thread_info, flags);
	OFFSET(TI_status, thread_info, status);
	OFFSET(TI_preempt_count, thread_info, preempt_count);
	OFFSET(TI_addr_limit, thread_info, addr_limit);
	OFFSET(TI_restart_block, thread_info, restart_block);
	OFFSET(TI_sysenter_return, thread_info, sysenter_return);
	OFFSET(TI_cpu, thread_info, cpu);
	BLANK();

	OFFSET(GDS_size, Xgt_desc_struct, size);
	OFFSET(GDS_address, Xgt_desc_struct, address);
	OFFSET(GDS_pad, Xgt_desc_struct, pad);
	BLANK();

	OFFSET(PT_EBX, pt_regs, ebx);
	OFFSET(PT_ECX, pt_regs, ecx);
	OFFSET(PT_EDX, pt_regs, edx);
	OFFSET(PT_ESI, pt_regs, esi);
	OFFSET(PT_EDI, pt_regs, edi);
	OFFSET(PT_EBP, pt_regs, ebp);
	OFFSET(PT_EAX, pt_regs, eax);
	OFFSET(PT_DS,  pt_regs, xds);
	OFFSET(PT_ES,  pt_regs, xes);
	OFFSET(PT_FS,  pt_regs, xfs);
	OFFSET(PT_ORIG_EAX, pt_regs, orig_eax);
	OFFSET(PT_EIP, pt_regs, eip);
	OFFSET(PT_CS,  pt_regs, xcs);
	OFFSET(PT_EFLAGS, pt_regs, eflags);
	OFFSET(PT_OLDESP, pt_regs, esp);
	OFFSET(PT_OLDSS,  pt_regs, xss);
	BLANK();

	OFFSET(EXEC_DOMAIN_handler, exec_domain, handler);
	OFFSET(RT_SIGFRAME_sigcontext, rt_sigframe, uc.uc_mcontext);
	BLANK();

	OFFSET(pbe_address, pbe, address);
	OFFSET(pbe_orig_address, pbe, orig_address);
	OFFSET(pbe_next, pbe, next);

	/* Offset from the sysenter stack to tss.esp0 */
	DEFINE(TSS_sysenter_esp0, offsetof(struct tss_struct, x86_tss.esp0) -
		 sizeof(struct tss_struct));

	DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
	DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT);
	DEFINE(PTRS_PER_PTE, PTRS_PER_PTE);
	DEFINE(PTRS_PER_PMD, PTRS_PER_PMD);
	DEFINE(PTRS_PER_PGD, PTRS_PER_PGD);

	DEFINE(VDSO_PRELINK_asm, VDSO_PRELINK);

	OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);

#ifdef CONFIG_PARAVIRT
	BLANK();
	OFFSET(PARAVIRT_enabled, paravirt_ops, paravirt_enabled);
	OFFSET(PARAVIRT_irq_disable, paravirt_ops, irq_disable);
	OFFSET(PARAVIRT_irq_enable, paravirt_ops, irq_enable);
	OFFSET(PARAVIRT_irq_enable_sysexit, paravirt_ops, irq_enable_sysexit);
	OFFSET(PARAVIRT_iret, paravirt_ops, iret);
	OFFSET(PARAVIRT_read_cr0, paravirt_ops, read_cr0);
#endif

#ifdef CONFIG_XEN
	BLANK();
	OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
	OFFSET(XEN_vcpu_info_pending, vcpu_info, evtchn_upcall_pending);
#endif

#ifdef CONFIG_LGUEST_GUEST
	BLANK();
	OFFSET(LGUEST_DATA_irq_enabled, lguest_data, irq_enabled);
	OFFSET(LGUEST_PAGES_host_gdt_desc, lguest_pages, state.host_gdt_desc);
	OFFSET(LGUEST_PAGES_host_idt_desc, lguest_pages, state.host_idt_desc);
	OFFSET(LGUEST_PAGES_host_cr3, lguest_pages, state.host_cr3);
	OFFSET(LGUEST_PAGES_host_sp, lguest_pages, state.host_sp);
	OFFSET(LGUEST_PAGES_guest_gdt_desc, lguest_pages,state.guest_gdt_desc);
	OFFSET(LGUEST_PAGES_guest_idt_desc, lguest_pages,state.guest_idt_desc);
	OFFSET(LGUEST_PAGES_guest_gdt, lguest_pages, state.guest_gdt);
	OFFSET(LGUEST_PAGES_regs_trapnum, lguest_pages, regs.trapnum);
	OFFSET(LGUEST_PAGES_regs_errcode, lguest_pages, regs.errcode);
	OFFSET(LGUEST_PAGES_regs, lguest_pages, regs);
#endif
}