1 files changed, 67 insertions, 0 deletions

diff --git a/arch/sh/include/asm/user.h b/arch/sh/include/asm/user.h
new file mode 100644
index 000000000000..8fd3cf6c58d4
--- /dev/null
+++ b/arch/sh/include/asm/user.h
@@ -0,0 +1,67 @@
+#ifndef __ASM_SH_USER_H
+#define __ASM_SH_USER_H
+
+#include <asm/ptrace.h>
+#include <asm/page.h>
+
+/*
+ * Core file format: The core file is written in such a way that gdb
+ * can understand it and provide useful information to the user (under
+ * linux we use the `trad-core' bfd).  The file contents are as follows:
+ *
+ *  upage: 1 page consisting of a user struct that tells gdb
+ *      what is present in the file.  Directly after this is a
+ *      copy of the task_struct, which is currently not used by gdb,
+ *      but it may come in handy at some point.  All of the registers
+ *      are stored as part of the upage.  The upage should always be
+ *      only one page long.
+ *  data: The data segment follows next.  We use current->end_text to
+ *      current->brk to pick up all of the user variables, plus any memory
+ *      that may have been sbrk'ed.  No attempt is made to determine if a
+ *      page is demand-zero or if a page is totally unused, we just cover
+ *      the entire range.  All of the addresses are rounded in such a way
+ *      that an integral number of pages is written.
+ *  stack: We need the stack information in order to get a meaningful
+ *      backtrace.  We need to write the data from usp to
+ *      current->start_stack, so we round each of these in order to be able
+ *      to write an integer number of pages.
+ */
+
+#if defined(__SH5__) || defined(CONFIG_CPU_SH5)
+struct user_fpu_struct {
+        unsigned long fp_regs[32];
+        unsigned int fpscr;
+};
+#else
+struct user_fpu_struct {
+        unsigned long fp_regs[16];
+        unsigned long xfp_regs[16];
+        unsigned long fpscr;
+        unsigned long fpul;
+};
+#endif
+
+struct user {
+        struct pt_regs  regs;                   /* entire machine state */
+        struct user_fpu_struct fpu;     /* Math Co-processor registers  */
+        int u_fpvalid;          /* True if math co-processor being used */
+        size_t          u_tsize;                /* text size (pages) */
+        size_t          u_dsize;                /* data size (pages) */
+        size_t          u_ssize;                /* stack size (pages) */
+        unsigned long   start_code;             /* text starting address */
+        unsigned long   start_data;             /* data starting address */
+        unsigned long   start_stack;            /* stack starting address */
+        long int        signal;                 /* signal causing core dump */
+        unsigned long   u_ar0;                  /* help gdb find registers */
+        struct user_fpu_struct* u_fpstate;      /* Math Co-processor pointer */
+        unsigned long   magic;                  /* identifies a core file */
+        char            u_comm[32];             /* user command name */
+};
+
+#define NBPG                    PAGE_SIZE
+#define UPAGES                  1
+#define HOST_TEXT_START_ADDR    (u.start_code)
+#define HOST_DATA_START_ADDR    (u.start_data)
+#define HOST_STACK_END_ADDR     (u.start_stack + u.u_ssize * NBPG)
+
+#endif /* __ASM_SH_USER_H */