diff options
Diffstat (limited to 'libc/sysdeps/linux/cris/sys/user.h')
| -rw-r--r-- | libc/sysdeps/linux/cris/sys/user.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/cris/sys/user.h b/libc/sysdeps/linux/cris/sys/user.h new file mode 100644 index 000000000..d629c30d7 --- /dev/null +++ b/libc/sysdeps/linux/cris/sys/user.h @@ -0,0 +1,81 @@ +#ifndef __ASM_CRIS_USER_H +#define __ASM_CRIS_USER_H + +/* User-mode register used for core dumps. */ + +struct user_fpregs { +}; + +struct user_regs_struct { + unsigned long r0; /* General registers. */ + unsigned long r1; + unsigned long r2; + unsigned long r3; + unsigned long r4; + unsigned long r5; + unsigned long r6; + unsigned long r7; + unsigned long r8; + unsigned long r9; + unsigned long r10; + unsigned long r11; + unsigned long r12; + unsigned long r13; + unsigned long sp; /* R14, Stack pointer. */ + unsigned long acr; /* R15, Address calculation register. */ + unsigned long bz; /* P0, Constant zero (8-bits). */ + unsigned long vr; /* P1, Version register (8-bits). */ + unsigned long pid; /* P2, Process ID (8-bits). */ + unsigned long srs; /* P3, Support register select (8-bits). */ + unsigned long wz; /* P4, Constant zero (16-bits). */ + unsigned long exs; /* P5, Exception status. */ + unsigned long eda; /* P6, Exception data address. */ + unsigned long mof; /* P7, Multiply overflow regiter. */ + unsigned long dz; /* P8, Constant zero (32-bits). */ + unsigned long ebp; /* P9, Exception base pointer. */ + unsigned long erp; /* P10, Exception return pointer. */ + unsigned long srp; /* P11, Subroutine return pointer. */ + unsigned long nrp; /* P12, NMI return pointer. */ + unsigned long ccs; /* P13, Condition code stack. */ + unsigned long usp; /* P14, User mode stack pointer. */ + unsigned long spc; /* P15, Single step PC. */ +}; + +/* + * 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 */ +}; + +#endif /* __ASM_CRIS_USER_H */ |