user.h
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上传日期：2013-02-24
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文件大小：4k
- #ifndef __ASM_CRIS_USER_H
- #define __ASM_CRIS_USER_H
- #include <linux/types.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.
- */
- /* User mode registers, used for core dumps. In order to keep ELF_NGREG
- sensible we let all registers be 32 bits. The csr registers are included
- for future use. */
- 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; /* Stack pointer. */
- unsigned long pc; /* Program counter. */
- unsigned long p0; /* Constant zero (only 8 bits). */
- unsigned long vr; /* Version register (only 8 bits). */
- unsigned long p2; /* Reserved. */
- unsigned long p3; /* Reserved. */
- unsigned long p4; /* Constant zero (only 16 bits). */
- unsigned long ccr; /* Condition code register (only 16 bits). */
- unsigned long p6; /* Reserved. */
- unsigned long mof; /* Multiply overflow register. */
- unsigned long p8; /* Constant zero. */
- unsigned long ibr; /* Not accessible. */
- unsigned long irp; /* Not accessible. */
- unsigned long srp; /* Subroutine return pointer. */
- unsigned long bar; /* Not accessible. */
- unsigned long dccr; /* Dword condition code register. */
- unsigned long brp; /* Not accessible. */
- unsigned long usp; /* User-mode stack pointer. Same as sp when
- in user mode. */
- unsigned long csrinstr; /* Internal status registers. */
- unsigned long csraddr;
- unsigned long csrdata;
- };
-
- 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 */
- struct regs * 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 */
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