2 files changed, 139 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/ppc32.h b/arch/powerpc/kernel/ppc32.h
new file mode 100644
index 000000000000..90e562771791
--- /dev/null
+++ b/arch/powerpc/kernel/ppc32.h
@@ -0,0 +1,138 @@
+#ifndef _PPC64_PPC32_H
+#define _PPC64_PPC32_H
+
+#include <linux/compat.h>
+#include <asm/siginfo.h>
+#include <asm/signal.h>
+
+/*
+ * Data types and macros for providing 32b PowerPC support.
+ * 
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+/* These are here to support 32-bit syscalls on a 64-bit kernel. */
+
+typedef struct compat_siginfo {
+        int si_signo;
+        int si_errno;
+        int si_code;
+
+        union {
+                int _pad[SI_PAD_SIZE32];
+
+                /* kill() */
+                struct {
+                        compat_pid_t _pid;              /* sender's pid */
+                        compat_uid_t _uid;              /* sender's uid */
+                } _kill;
+
+                /* POSIX.1b timers */
+                struct {
+                        compat_timer_t _tid;                    /* timer id */
+                        int _overrun;                   /* overrun count */
+                        compat_sigval_t _sigval;                /* same as below */
+                        int _sys_private;               /* not to be passed to user */
+                } _timer;
+
+                /* POSIX.1b signals */
+                struct {
+                        compat_pid_t _pid;              /* sender's pid */
+                        compat_uid_t _uid;              /* sender's uid */
+                        compat_sigval_t _sigval;
+                } _rt;
+
+                /* SIGCHLD */
+                struct {
+                        compat_pid_t _pid;              /* which child */
+                        compat_uid_t _uid;              /* sender's uid */
+                        int _status;                    /* exit code */
+                        compat_clock_t _utime;
+                        compat_clock_t _stime;
+                } _sigchld;
+
+                /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
+                struct {
+                        unsigned int _addr; /* faulting insn/memory ref. */
+                } _sigfault;
+
+                /* SIGPOLL */
+                struct {
+                        int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
+                        int _fd;
+                } _sigpoll;
+        } _sifields;
+} compat_siginfo_t;
+
+#define __old_sigaction32       old_sigaction32
+
+struct __old_sigaction32 {
+        compat_uptr_t           sa_handler;
+        compat_old_sigset_t     sa_mask;
+        unsigned int            sa_flags;
+        compat_uptr_t           sa_restorer;     /* not used by Linux/SPARC yet */
+};
+
+
+
+struct sigaction32 {
+       compat_uptr_t  sa_handler;       /* Really a pointer, but need to deal with 32 bits */
+       unsigned int sa_flags;
+       compat_uptr_t sa_restorer;       /* Another 32 bit pointer */
+       compat_sigset_t sa_mask;         /* A 32 bit mask */
+};
+
+typedef struct sigaltstack_32 {
+        unsigned int ss_sp;
+        int ss_flags;
+        compat_size_t ss_size;
+} stack_32_t;
+
+struct pt_regs32 {
+        unsigned int gpr[32];
+        unsigned int nip;
+        unsigned int msr;
+        unsigned int orig_gpr3;         /* Used for restarting system calls */
+        unsigned int ctr;
+        unsigned int link;
+        unsigned int xer;
+        unsigned int ccr;
+        unsigned int mq;                /* 601 only (not used at present) */
+        unsigned int trap;              /* Reason for being here */
+        unsigned int dar;               /* Fault registers */
+        unsigned int dsisr;
+        unsigned int result;            /* Result of a system call */
+};
+
+struct sigcontext32 {
+        unsigned int    _unused[4];
+        int             signal;
+        compat_uptr_t   handler;
+        unsigned int    oldmask;
+        compat_uptr_t   regs;  /* 4 byte pointer to the pt_regs32 structure. */
+};
+
+struct mcontext32 {
+        elf_gregset_t32         mc_gregs;
+        elf_fpregset_t          mc_fregs;
+        unsigned int            mc_pad[2];
+        elf_vrregset_t32        mc_vregs __attribute__((__aligned__(16)));
+};
+
+struct ucontext32 { 
+        unsigned int            uc_flags;
+        unsigned int            uc_link;
+        stack_32_t              uc_stack;
+        int                     uc_pad[7];
+        compat_uptr_t           uc_regs;        /* points to uc_mcontext field */
+        compat_sigset_t         uc_sigmask;     /* mask last for extensibility */
+        /* glibc has 1024-bit signal masks, ours are 64-bit */
+        int                     uc_maskext[30];
+        int                     uc_pad2[3];
+        struct mcontext32       uc_mcontext;
+};
+
+#endif  /* _PPC64_PPC32_H */
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 444c3e81884c..876c57c11365 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -43,7 +43,7 @@
 #include <asm/uaccess.h>
 #include <asm/cacheflush.h>
 #ifdef CONFIG_PPC64
-#include <asm/ppc32.h>
+#include "ppc32.h"
 #include <asm/ppcdebug.h>
 #include <asm/unistd.h>
 #include <asm/vdso.h>