diff options
Diffstat (limited to 'libc/sysdeps/linux')
| -rw-r--r-- | libc/sysdeps/linux/sh/sys/user.h | 56 |
1 files changed, 53 insertions, 3 deletions
diff --git a/libc/sysdeps/linux/sh/sys/user.h b/libc/sysdeps/linux/sh/sys/user.h index 7f31bb62d..b1adc13b7 100644 --- a/libc/sysdeps/linux/sh/sys/user.h +++ b/libc/sysdeps/linux/sh/sys/user.h @@ -19,10 +19,60 @@ #ifndef _SYS_USER_H #define _SYS_USER_H 1 -#include <features.h> +#include <unistd.h> +#include <asm/ptrace.h> -#include <asm/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. + */ -#undef start_thread +struct user_fpu_struct { + unsigned long fp_regs[16]; + unsigned long xfp_regs[16]; + unsigned long fpscr; + unsigned long fpul; +}; + +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 */ + struct regs * 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 getpagesize() +#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 /* sys/user.h */ |