fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-sh / user.h
blobd1b8511d9d9f8772729aeb302119367c27744c7b
1 #ifndef __ASM_SH_USER_H
2 #define __ASM_SH_USER_H
4 #include <asm/ptrace.h>
5 #include <asm/page.h>
7 /*
8 * Core file format: The core file is written in such a way that gdb
9 * can understand it and provide useful information to the user (under
10 * linux we use the `trad-core' bfd). The file contents are as follows:
12 * upage: 1 page consisting of a user struct that tells gdb
13 * what is present in the file. Directly after this is a
14 * copy of the task_struct, which is currently not used by gdb,
15 * but it may come in handy at some point. All of the registers
16 * are stored as part of the upage. The upage should always be
17 * only one page long.
18 * data: The data segment follows next. We use current->end_text to
19 * current->brk to pick up all of the user variables, plus any memory
20 * that may have been sbrk'ed. No attempt is made to determine if a
21 * page is demand-zero or if a page is totally unused, we just cover
22 * the entire range. All of the addresses are rounded in such a way
23 * that an integral number of pages is written.
24 * stack: We need the stack information in order to get a meaningful
25 * backtrace. We need to write the data from usp to
26 * current->start_stack, so we round each of these in order to be able
27 * to write an integer number of pages.
30 struct user_fpu_struct {
31 unsigned long fp_regs[16];
32 unsigned long xfp_regs[16];
33 unsigned long fpscr;
34 unsigned long fpul;
37 struct user {
38 struct pt_regs regs; /* entire machine state */
39 struct user_fpu_struct fpu; /* Math Co-processor registers */
40 int u_fpvalid; /* True if math co-processor being used */
41 size_t u_tsize; /* text size (pages) */
42 size_t u_dsize; /* data size (pages) */
43 size_t u_ssize; /* stack size (pages) */
44 unsigned long start_code; /* text starting address */
45 unsigned long start_data; /* data starting address */
46 unsigned long start_stack; /* stack starting address */
47 long int signal; /* signal causing core dump */
48 struct regs * u_ar0; /* help gdb find registers */
49 struct user_fpu_struct* u_fpstate; /* Math Co-processor pointer */
50 unsigned long magic; /* identifies a core file */
51 char u_comm[32]; /* user command name */
54 #define NBPG PAGE_SIZE
55 #define UPAGES 1
56 #define HOST_TEXT_START_ADDR (u.start_code)
57 #define HOST_DATA_START_ADDR (u.start_data)
58 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
60 #endif /* __ASM_SH_USER_H */