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authorPaul Mundt <lethal@linux-sh.org>2008-07-29 08:09:44 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-07-29 08:09:44 +0900
commitf15cbe6f1a4b4d9df59142fc8e4abb973302cf44 (patch)
tree774d7b11abaaf33561ab8268bf51ddd9ceb79025 /arch/sh/include/asm/user.h
parent25326277d8d1393d1c66240e6255aca780f9e3eb (diff)
sh: migrate to arch/sh/include/
This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac. Most of the moving about was done with Sam's directions at: http://marc.info/?l=linux-sh&m=121724823706062&w=2 with subsequent hacking and fixups entirely my fault. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/asm/user.h')
-rw-r--r--arch/sh/include/asm/user.h67
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 */