1/*
2 * offset.c: Calculate pt_regs and task_struct offsets.
3 *
4 * Copyright (C) 1996 David S. Miller
5 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Ralf Baechle
6 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
7 *
8 * Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
9 * Copyright (C) 2000 MIPS Technologies, Inc.
10 */
11#include <linux/compat.h>
12#include <linux/types.h>
13#include <linux/sched.h>
14#include <linux/mm.h>
15#include <linux/interrupt.h>
16
17#include <asm/ptrace.h>
18#include <asm/processor.h>
19
20#define text(t) __asm__("\n@@@" t)
21#define _offset(type, member) (&(((type *)NULL)->member))
22#define offset(string, ptr, member) \
23	__asm__("\n@@@" string "%0" : : "i" (_offset(ptr, member)))
24#define constant(string, member) \
25	__asm__("\n@@@" string "%X0" : : "ri" (member))
26#define size(string, size) \
27	__asm__("\n@@@" string "%0" : : "i" (sizeof(size)))
28#define linefeed text("")
29
30void output_ptreg_defines(void)
31{
32	text("/* MIPS pt_regs offsets. */");
33	offset("#define PT_R0     ", struct pt_regs, regs[0]);
34	offset("#define PT_R1     ", struct pt_regs, regs[1]);
35	offset("#define PT_R2     ", struct pt_regs, regs[2]);
36	offset("#define PT_R3     ", struct pt_regs, regs[3]);
37	offset("#define PT_R4     ", struct pt_regs, regs[4]);
38	offset("#define PT_R5     ", struct pt_regs, regs[5]);
39	offset("#define PT_R6     ", struct pt_regs, regs[6]);
40	offset("#define PT_R7     ", struct pt_regs, regs[7]);
41	offset("#define PT_R8     ", struct pt_regs, regs[8]);
42	offset("#define PT_R9     ", struct pt_regs, regs[9]);
43	offset("#define PT_R10    ", struct pt_regs, regs[10]);
44	offset("#define PT_R11    ", struct pt_regs, regs[11]);
45	offset("#define PT_R12    ", struct pt_regs, regs[12]);
46	offset("#define PT_R13    ", struct pt_regs, regs[13]);
47	offset("#define PT_R14    ", struct pt_regs, regs[14]);
48	offset("#define PT_R15    ", struct pt_regs, regs[15]);
49	offset("#define PT_R16    ", struct pt_regs, regs[16]);
50	offset("#define PT_R17    ", struct pt_regs, regs[17]);
51	offset("#define PT_R18    ", struct pt_regs, regs[18]);
52	offset("#define PT_R19    ", struct pt_regs, regs[19]);
53	offset("#define PT_R20    ", struct pt_regs, regs[20]);
54	offset("#define PT_R21    ", struct pt_regs, regs[21]);
55	offset("#define PT_R22    ", struct pt_regs, regs[22]);
56	offset("#define PT_R23    ", struct pt_regs, regs[23]);
57	offset("#define PT_R24    ", struct pt_regs, regs[24]);
58	offset("#define PT_R25    ", struct pt_regs, regs[25]);
59	offset("#define PT_R26    ", struct pt_regs, regs[26]);
60	offset("#define PT_R27    ", struct pt_regs, regs[27]);
61	offset("#define PT_R28    ", struct pt_regs, regs[28]);
62	offset("#define PT_R29    ", struct pt_regs, regs[29]);
63	offset("#define PT_R30    ", struct pt_regs, regs[30]);
64	offset("#define PT_R31    ", struct pt_regs, regs[31]);
65	offset("#define PT_LO     ", struct pt_regs, lo);
66	offset("#define PT_HI     ", struct pt_regs, hi);
67#ifdef CONFIG_CPU_HAS_SMARTMIPS
68	offset("#define PT_ACX    ", struct pt_regs, acx);
69#endif
70	offset("#define PT_EPC    ", struct pt_regs, cp0_epc);
71	offset("#define PT_BVADDR ", struct pt_regs, cp0_badvaddr);
72	offset("#define PT_STATUS ", struct pt_regs, cp0_status);
73	offset("#define PT_CAUSE  ", struct pt_regs, cp0_cause);
74#ifdef CONFIG_MIPS_MT_SMTC
75	offset("#define PT_TCSTATUS  ", struct pt_regs, cp0_tcstatus);
76#endif /* CONFIG_MIPS_MT_SMTC */
77	size("#define PT_SIZE   ", struct pt_regs);
78	linefeed;
79}
80
81void output_task_defines(void)
82{
83	text("/* MIPS task_struct offsets. */");
84	offset("#define TASK_STATE         ", struct task_struct, state);
85	offset("#define TASK_THREAD_INFO   ", struct task_struct, stack);
86	offset("#define TASK_FLAGS         ", struct task_struct, flags);
87	offset("#define TASK_MM            ", struct task_struct, mm);
88	offset("#define TASK_PID           ", struct task_struct, pid);
89	size(  "#define TASK_STRUCT_SIZE   ", struct task_struct);
90	linefeed;
91}
92
93void output_thread_info_defines(void)
94{
95	text("/* MIPS thread_info offsets. */");
96	offset("#define TI_TASK            ", struct thread_info, task);
97	offset("#define TI_EXEC_DOMAIN     ", struct thread_info, exec_domain);
98	offset("#define TI_FLAGS           ", struct thread_info, flags);
99	offset("#define TI_TP_VALUE	   ", struct thread_info, tp_value);
100	offset("#define TI_CPU             ", struct thread_info, cpu);
101	offset("#define TI_PRE_COUNT       ", struct thread_info, preempt_count);
102	offset("#define TI_ADDR_LIMIT      ", struct thread_info, addr_limit);
103	offset("#define TI_RESTART_BLOCK   ", struct thread_info, restart_block);
104	offset("#define TI_REGS            ", struct thread_info, regs);
105	constant("#define _THREAD_SIZE       ", THREAD_SIZE);
106	constant("#define _THREAD_MASK       ", THREAD_MASK);
107	linefeed;
108}
109
110void output_thread_defines(void)
111{
112	text("/* MIPS specific thread_struct offsets. */");
113	offset("#define THREAD_REG16   ", struct task_struct, thread.reg16);
114	offset("#define THREAD_REG17   ", struct task_struct, thread.reg17);
115	offset("#define THREAD_REG18   ", struct task_struct, thread.reg18);
116	offset("#define THREAD_REG19   ", struct task_struct, thread.reg19);
117	offset("#define THREAD_REG20   ", struct task_struct, thread.reg20);
118	offset("#define THREAD_REG21   ", struct task_struct, thread.reg21);
119	offset("#define THREAD_REG22   ", struct task_struct, thread.reg22);
120	offset("#define THREAD_REG23   ", struct task_struct, thread.reg23);
121	offset("#define THREAD_REG29   ", struct task_struct, thread.reg29);
122	offset("#define THREAD_REG30   ", struct task_struct, thread.reg30);
123	offset("#define THREAD_REG31   ", struct task_struct, thread.reg31);
124	offset("#define THREAD_STATUS  ", struct task_struct,
125	       thread.cp0_status);
126	offset("#define THREAD_FPU     ", struct task_struct, thread.fpu);
127
128	offset("#define THREAD_BVADDR  ", struct task_struct, \
129	       thread.cp0_badvaddr);
130	offset("#define THREAD_BUADDR  ", struct task_struct, \
131	       thread.cp0_baduaddr);
132	offset("#define THREAD_ECODE   ", struct task_struct, \
133	       thread.error_code);
134	offset("#define THREAD_TRAPNO  ", struct task_struct, thread.trap_no);
135	offset("#define THREAD_MFLAGS  ", struct task_struct, thread.mflags);
136	offset("#define THREAD_TRAMP   ", struct task_struct, \
137	       thread.irix_trampoline);
138	offset("#define THREAD_OLDCTX  ", struct task_struct, \
139	       thread.irix_oldctx);
140	linefeed;
141}
142
143void output_thread_fpu_defines(void)
144{
145	offset("#define THREAD_FPR0    ",
146	       struct task_struct, thread.fpu.fpr[0]);
147	offset("#define THREAD_FPR1    ",
148	       struct task_struct, thread.fpu.fpr[1]);
149	offset("#define THREAD_FPR2    ",
150	       struct task_struct, thread.fpu.fpr[2]);
151	offset("#define THREAD_FPR3    ",
152	       struct task_struct, thread.fpu.fpr[3]);
153	offset("#define THREAD_FPR4    ",
154	       struct task_struct, thread.fpu.fpr[4]);
155	offset("#define THREAD_FPR5    ",
156	       struct task_struct, thread.fpu.fpr[5]);
157	offset("#define THREAD_FPR6    ",
158	       struct task_struct, thread.fpu.fpr[6]);
159	offset("#define THREAD_FPR7    ",
160	       struct task_struct, thread.fpu.fpr[7]);
161	offset("#define THREAD_FPR8    ",
162	       struct task_struct, thread.fpu.fpr[8]);
163	offset("#define THREAD_FPR9    ",
164	       struct task_struct, thread.fpu.fpr[9]);
165	offset("#define THREAD_FPR10   ",
166	       struct task_struct, thread.fpu.fpr[10]);
167	offset("#define THREAD_FPR11   ",
168	       struct task_struct, thread.fpu.fpr[11]);
169	offset("#define THREAD_FPR12   ",
170	       struct task_struct, thread.fpu.fpr[12]);
171	offset("#define THREAD_FPR13   ",
172	       struct task_struct, thread.fpu.fpr[13]);
173	offset("#define THREAD_FPR14   ",
174	       struct task_struct, thread.fpu.fpr[14]);
175	offset("#define THREAD_FPR15   ",
176	       struct task_struct, thread.fpu.fpr[15]);
177	offset("#define THREAD_FPR16   ",
178	       struct task_struct, thread.fpu.fpr[16]);
179	offset("#define THREAD_FPR17   ",
180	       struct task_struct, thread.fpu.fpr[17]);
181	offset("#define THREAD_FPR18   ",
182	       struct task_struct, thread.fpu.fpr[18]);
183	offset("#define THREAD_FPR19   ",
184	       struct task_struct, thread.fpu.fpr[19]);
185	offset("#define THREAD_FPR20   ",
186	       struct task_struct, thread.fpu.fpr[20]);
187	offset("#define THREAD_FPR21   ",
188	       struct task_struct, thread.fpu.fpr[21]);
189	offset("#define THREAD_FPR22   ",
190	       struct task_struct, thread.fpu.fpr[22]);
191	offset("#define THREAD_FPR23   ",
192	       struct task_struct, thread.fpu.fpr[23]);
193	offset("#define THREAD_FPR24   ",
194	       struct task_struct, thread.fpu.fpr[24]);
195	offset("#define THREAD_FPR25   ",
196	       struct task_struct, thread.fpu.fpr[25]);
197	offset("#define THREAD_FPR26   ",
198	       struct task_struct, thread.fpu.fpr[26]);
199	offset("#define THREAD_FPR27   ",
200	       struct task_struct, thread.fpu.fpr[27]);
201	offset("#define THREAD_FPR28   ",
202	       struct task_struct, thread.fpu.fpr[28]);
203	offset("#define THREAD_FPR29   ",
204	       struct task_struct, thread.fpu.fpr[29]);
205	offset("#define THREAD_FPR30   ",
206	       struct task_struct, thread.fpu.fpr[30]);
207	offset("#define THREAD_FPR31   ",
208	       struct task_struct, thread.fpu.fpr[31]);
209
210	offset("#define THREAD_FCR31   ",
211	       struct task_struct, thread.fpu.fcr31);
212	linefeed;
213}
214
215void output_mm_defines(void)
216{
217	text("/* Size of struct page  */");
218	size("#define STRUCT_PAGE_SIZE   ", struct page);
219	linefeed;
220	text("/* Linux mm_struct offsets. */");
221	offset("#define MM_USERS      ", struct mm_struct, mm_users);
222	offset("#define MM_PGD        ", struct mm_struct, pgd);
223	offset("#define MM_CONTEXT    ", struct mm_struct, context);
224	linefeed;
225	constant("#define _PAGE_SIZE     ", PAGE_SIZE);
226	constant("#define _PAGE_SHIFT    ", PAGE_SHIFT);
227	linefeed;
228	constant("#define _PGD_T_SIZE    ", sizeof(pgd_t));
229	constant("#define _PMD_T_SIZE    ", sizeof(pmd_t));
230	constant("#define _PTE_T_SIZE    ", sizeof(pte_t));
231	linefeed;
232	constant("#define _PGD_T_LOG2    ", PGD_T_LOG2);
233	constant("#define _PMD_T_LOG2    ", PMD_T_LOG2);
234	constant("#define _PTE_T_LOG2    ", PTE_T_LOG2);
235	linefeed;
236	constant("#define _PMD_SHIFT     ", PMD_SHIFT);
237	constant("#define _PGDIR_SHIFT   ", PGDIR_SHIFT);
238	linefeed;
239	constant("#define _PTRS_PER_PGD  ", PTRS_PER_PGD);
240	constant("#define _PTRS_PER_PMD  ", PTRS_PER_PMD);
241	constant("#define _PTRS_PER_PTE  ", PTRS_PER_PTE);
242	linefeed;
243}
244
245#ifdef CONFIG_32BIT
246void output_sc_defines(void)
247{
248	text("/* Linux sigcontext offsets. */");
249	offset("#define SC_REGS       ", struct sigcontext, sc_regs);
250	offset("#define SC_FPREGS     ", struct sigcontext, sc_fpregs);
251	offset("#define SC_ACX        ", struct sigcontext, sc_acx);
252	offset("#define SC_MDHI       ", struct sigcontext, sc_mdhi);
253	offset("#define SC_MDLO       ", struct sigcontext, sc_mdlo);
254	offset("#define SC_PC         ", struct sigcontext, sc_pc);
255	offset("#define SC_FPC_CSR    ", struct sigcontext, sc_fpc_csr);
256	offset("#define SC_FPC_EIR    ", struct sigcontext, sc_fpc_eir);
257	offset("#define SC_HI1        ", struct sigcontext, sc_hi1);
258	offset("#define SC_LO1        ", struct sigcontext, sc_lo1);
259	offset("#define SC_HI2        ", struct sigcontext, sc_hi2);
260	offset("#define SC_LO2        ", struct sigcontext, sc_lo2);
261	offset("#define SC_HI3        ", struct sigcontext, sc_hi3);
262	offset("#define SC_LO3        ", struct sigcontext, sc_lo3);
263	linefeed;
264}
265#endif
266
267#ifdef CONFIG_64BIT
268void output_sc_defines(void)
269{
270	text("/* Linux sigcontext offsets. */");
271	offset("#define SC_REGS       ", struct sigcontext, sc_regs);
272	offset("#define SC_FPREGS     ", struct sigcontext, sc_fpregs);
273	offset("#define SC_MDHI       ", struct sigcontext, sc_mdhi);
274	offset("#define SC_MDLO       ", struct sigcontext, sc_mdlo);
275	offset("#define SC_PC         ", struct sigcontext, sc_pc);
276	offset("#define SC_FPC_CSR    ", struct sigcontext, sc_fpc_csr);
277	linefeed;
278}
279#endif
280
281#ifdef CONFIG_MIPS32_COMPAT
282void output_sc32_defines(void)
283{
284	text("/* Linux 32-bit sigcontext offsets. */");
285	offset("#define SC32_FPREGS     ", struct sigcontext32, sc_fpregs);
286	offset("#define SC32_FPC_CSR    ", struct sigcontext32, sc_fpc_csr);
287	offset("#define SC32_FPC_EIR    ", struct sigcontext32, sc_fpc_eir);
288	linefeed;
289}
290#endif
291
292void output_signal_defined(void)
293{
294	text("/* Linux signal numbers. */");
295	constant("#define _SIGHUP     ", SIGHUP);
296	constant("#define _SIGINT     ", SIGINT);
297	constant("#define _SIGQUIT    ", SIGQUIT);
298	constant("#define _SIGILL     ", SIGILL);
299	constant("#define _SIGTRAP    ", SIGTRAP);
300	constant("#define _SIGIOT     ", SIGIOT);
301	constant("#define _SIGABRT    ", SIGABRT);
302	constant("#define _SIGEMT     ", SIGEMT);
303	constant("#define _SIGFPE     ", SIGFPE);
304	constant("#define _SIGKILL    ", SIGKILL);
305	constant("#define _SIGBUS     ", SIGBUS);
306	constant("#define _SIGSEGV    ", SIGSEGV);
307	constant("#define _SIGSYS     ", SIGSYS);
308	constant("#define _SIGPIPE    ", SIGPIPE);
309	constant("#define _SIGALRM    ", SIGALRM);
310	constant("#define _SIGTERM    ", SIGTERM);
311	constant("#define _SIGUSR1    ", SIGUSR1);
312	constant("#define _SIGUSR2    ", SIGUSR2);
313	constant("#define _SIGCHLD    ", SIGCHLD);
314	constant("#define _SIGPWR     ", SIGPWR);
315	constant("#define _SIGWINCH   ", SIGWINCH);
316	constant("#define _SIGURG     ", SIGURG);
317	constant("#define _SIGIO      ", SIGIO);
318	constant("#define _SIGSTOP    ", SIGSTOP);
319	constant("#define _SIGTSTP    ", SIGTSTP);
320	constant("#define _SIGCONT    ", SIGCONT);
321	constant("#define _SIGTTIN    ", SIGTTIN);
322	constant("#define _SIGTTOU    ", SIGTTOU);
323	constant("#define _SIGVTALRM  ", SIGVTALRM);
324	constant("#define _SIGPROF    ", SIGPROF);
325	constant("#define _SIGXCPU    ", SIGXCPU);
326	constant("#define _SIGXFSZ    ", SIGXFSZ);
327	linefeed;
328}
329
330void output_irq_cpustat_t_defines(void)
331{
332	text("/* Linux irq_cpustat_t offsets. */");
333	offset("#define IC_SOFTIRQ_PENDING ", irq_cpustat_t, __softirq_pending);
334	size("#define IC_IRQ_CPUSTAT_T   ", irq_cpustat_t);
335	linefeed;
336}
337