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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-01 17:51:51 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-01 17:51:51 +0100 |
commit | 0242909a6135e10a28822c64f9ad50fdad52757c (patch) | |
tree | c5f9c8abe95a65433e6ac356871f2379c02488fe /arch/cris/include/asm/user.h | |
parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmo... (diff) | |
parent | [CRIS] Move header files from include to arch/cris/include. (diff) | |
download | linux-0242909a6135e10a28822c64f9ad50fdad52757c.tar.xz linux-0242909a6135e10a28822c64f9ad50fdad52757c.zip |
Merge branch 'cris_move' of git://www.jni.nu/cris
* 'cris_move' of git://www.jni.nu/cris:
[CRIS] Move header files from include to arch/cris/include.
[CRISv32] Remove warning in io.h
Diffstat (limited to 'arch/cris/include/asm/user.h')
-rw-r--r-- | arch/cris/include/asm/user.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/cris/include/asm/user.h b/arch/cris/include/asm/user.h new file mode 100644 index 000000000000..59147cf43cf6 --- /dev/null +++ b/arch/cris/include/asm/user.h @@ -0,0 +1,52 @@ +#ifndef __ASM_CRIS_USER_H +#define __ASM_CRIS_USER_H + +#include <linux/types.h> +#include <asm/ptrace.h> +#include <asm/page.h> +#include <arch/user.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. + */ + +struct user { + struct user_regs_struct regs; /* entire machine state */ + 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 */ + 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_CRIS_USER_H */ |