xref: /linux/arch/sparc/kernel/asm-offsets.c (revision 6c7340a7a8d2b6ecad1ad108f6daa73ba1dc082f)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * This program is used to generate definitions needed by
4  * assembly language modules.
5  *
6  * We use the technique used in the OSF Mach kernel code:
7  * generate asm statements containing #defines,
8  * compile this file to assembler, and then extract the
9  * #defines from the assembly-language output.
10  *
11  * On sparc, thread_info data is static and TI_XXX offsets are computed by hand.
12  */
13 #define COMPILE_OFFSETS
14 
15 #include <linux/sched.h>
16 #include <linux/mm_types.h>
17 // #include <linux/mm.h>
18 #include <linux/kbuild.h>
19 
20 #include <asm/hibernate.h>
21 
22 #ifdef CONFIG_SPARC32
sparc32_foo(void)23 static int __used sparc32_foo(void)
24 {
25 	DEFINE(AOFF_thread_fork_kpsr,
26 			offsetof(struct thread_struct, fork_kpsr));
27 	return 0;
28 }
29 #else
sparc64_foo(void)30 static int __used sparc64_foo(void)
31 {
32 #ifdef CONFIG_HIBERNATION
33 	BLANK();
34 	OFFSET(SC_REG_FP, saved_context, fp);
35 	OFFSET(SC_REG_CWP, saved_context, cwp);
36 	OFFSET(SC_REG_WSTATE, saved_context, wstate);
37 
38 	OFFSET(SC_REG_TICK, saved_context, tick);
39 	OFFSET(SC_REG_PSTATE, saved_context, pstate);
40 
41 	OFFSET(SC_REG_G4, saved_context, g4);
42 	OFFSET(SC_REG_G5, saved_context, g5);
43 	OFFSET(SC_REG_G6, saved_context, g6);
44 #endif
45 	return 0;
46 }
47 #endif
48 
foo(void)49 static int __used foo(void)
50 {
51 	BLANK();
52 	DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
53 	BLANK();
54 	DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
55 	BLANK();
56 	DEFINE(VMA_VM_MM,    offsetof(struct vm_area_struct, vm_mm));
57 
58 	/* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
59 	return 0;
60 }
61 
62