1#ifndef _PPC64_PPC32_H
2#define _PPC64_PPC32_H
3
4#include <linux/compat.h>
5#include <asm/siginfo.h>
6#include <asm/signal.h>
7
8/*
9 * Data types and macros for providing 32b PowerPC support.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 */
16
17/* These are here to support 32-bit syscalls on a 64-bit kernel. */
18
19struct pt_regs32 {
20	unsigned int gpr[32];
21	unsigned int nip;
22	unsigned int msr;
23	unsigned int orig_gpr3;		/* Used for restarting system calls */
24	unsigned int ctr;
25	unsigned int link;
26	unsigned int xer;
27	unsigned int ccr;
28	unsigned int mq;		/* 601 only (not used at present) */
29	unsigned int trap;		/* Reason for being here */
30	unsigned int dar;		/* Fault registers */
31	unsigned int dsisr;
32	unsigned int result;		/* Result of a system call */
33};
34
35struct sigcontext32 {
36	unsigned int	_unused[4];
37	int		signal;
38	compat_uptr_t	handler;
39	unsigned int	oldmask;
40	compat_uptr_t	regs;  /* 4 byte pointer to the pt_regs32 structure. */
41};
42
43struct mcontext32 {
44	elf_gregset_t32		mc_gregs;
45	elf_fpregset_t		mc_fregs;
46	unsigned int		mc_pad[2];
47	elf_vrregset_t32	mc_vregs __attribute__((__aligned__(16)));
48	elf_vsrreghalf_t32      mc_vsregs __attribute__((__aligned__(16)));
49};
50
51struct ucontext32 {
52	unsigned int	  	uc_flags;
53	unsigned int 	  	uc_link;
54	compat_stack_t	 	uc_stack;
55	int		 	uc_pad[7];
56	compat_uptr_t		uc_regs;	/* points to uc_mcontext field */
57	compat_sigset_t	 	uc_sigmask;	/* mask last for extensibility */
58	/* glibc has 1024-bit signal masks, ours are 64-bit */
59	int		 	uc_maskext[30];
60	int		 	uc_pad2[3];
61	struct mcontext32	uc_mcontext;
62};
63
64#endif  /* _PPC64_PPC32_H */
65