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Diffstat (limited to 'gdb/gdbserver/low-sparc.c')
| -rw-r--r-- | gdb/gdbserver/low-sparc.c | 334 |
1 files changed, 0 insertions, 334 deletions
diff --git a/gdb/gdbserver/low-sparc.c b/gdb/gdbserver/low-sparc.c deleted file mode 100644 index ddffaec..0000000 --- a/gdb/gdbserver/low-sparc.c +++ /dev/null @@ -1,334 +0,0 @@ -/* Low level interface to ptrace, for the remote server for GDB. - Copyright (C) 1986, 1987, 1993 Free Software Foundation, Inc. - -This file is part of GDB. - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include <sys/wait.h> -#include "frame.h" -#include "inferior.h" -/*************************** -#include "initialize.h" -****************************/ - -#include <stdio.h> -#include <sys/param.h> -#include <sys/dir.h> -#include <sys/user.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <sgtty.h> -#include <fcntl.h> - -/***************Begin MY defs*********************/ -int quit_flag = 0; -char registers[REGISTER_BYTES]; - -/* Index within `registers' of the first byte of the space for - register N. */ - - -char buf2[MAX_REGISTER_RAW_SIZE]; -/***************End MY defs*********************/ - -#include <sys/ptrace.h> -#include <sys/reg.h> - -extern int sys_nerr; -extern char **sys_errlist; -extern char **environ; -extern int errno; -extern int inferior_pid; -void quit (), perror_with_name (); -int query (); - -/* Start an inferior process and returns its pid. - ALLARGS is a vector of program-name and args. - ENV is the environment vector to pass. */ - -int -create_inferior (program, allargs) - char *program; - char **allargs; -{ - int pid; - - pid = fork (); - if (pid < 0) - perror_with_name ("fork"); - - if (pid == 0) - { - ptrace (PTRACE_TRACEME); - - execv (program, allargs); - - fprintf (stderr, "Cannot exec %s: %s.\n", program, - errno < sys_nerr ? sys_errlist[errno] : "unknown error"); - fflush (stderr); - _exit (0177); - } - - return pid; -} - -/* Kill the inferior process. Make us have no inferior. */ - -void -kill_inferior () -{ - if (inferior_pid == 0) - return; - ptrace (8, inferior_pid, 0, 0); - wait (0); - /*************inferior_died ();****VK**************/ -} - -/* Return nonzero if the given thread is still alive. */ -int -mythread_alive (pid) - int pid; -{ - return 1; -} - -/* Wait for process, returns status */ - -unsigned char -mywait (status) - char *status; -{ - int pid; - union wait w; - - pid = wait (&w); - if (pid != inferior_pid) - perror_with_name ("wait"); - - if (WIFEXITED (w)) - { - fprintf (stderr, "\nChild exited with retcode = %x \n", WEXITSTATUS (w)); - *status = 'W'; - return ((unsigned char) WEXITSTATUS (w)); - } - else if (!WIFSTOPPED (w)) - { - fprintf (stderr, "\nChild terminated with signal = %x \n", WTERMSIG (w)); - *status = 'X'; - return ((unsigned char) WTERMSIG (w)); - } - - fetch_inferior_registers (0); - - *status = 'T'; - return ((unsigned char) WSTOPSIG (w)); -} - -/* Resume execution of the inferior process. - If STEP is nonzero, single-step it. - If SIGNAL is nonzero, give it that signal. */ - -void -myresume (step, signal) - int step; - int signal; -{ - errno = 0; - ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, inferior_pid, 1, signal); - if (errno) - perror_with_name ("ptrace"); -} - -/* Fetch one or more registers from the inferior. REGNO == -1 to get - them all. We actually fetch more than requested, when convenient, - marking them as valid so we won't fetch them again. */ - -void -fetch_inferior_registers (ignored) - int ignored; -{ - struct regs inferior_registers; - struct fp_status inferior_fp_registers; - int i; - - /* Global and Out regs are fetched directly, as well as the control - registers. If we're getting one of the in or local regs, - and the stack pointer has not yet been fetched, - we have to do that first, since they're found in memory relative - to the stack pointer. */ - - if (ptrace (PTRACE_GETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers, 0)) - perror("ptrace_getregs"); - - registers[REGISTER_BYTE (0)] = 0; - memcpy (®isters[REGISTER_BYTE (1)], &inferior_registers.r_g1, - 15 * REGISTER_RAW_SIZE (G0_REGNUM)); - *(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps; - *(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc; - *(int *)®isters[REGISTER_BYTE (NPC_REGNUM)] = inferior_registers.r_npc; - *(int *)®isters[REGISTER_BYTE (Y_REGNUM)] = inferior_registers.r_y; - - /* Floating point registers */ - - if (ptrace (PTRACE_GETFPREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_fp_registers, - 0)) - perror("ptrace_getfpregs"); - memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers, - sizeof inferior_fp_registers.fpu_fr); - - /* These regs are saved on the stack by the kernel. Only read them - all (16 ptrace calls!) if we really need them. */ - - read_inferior_memory (*(CORE_ADDR*)®isters[REGISTER_BYTE (SP_REGNUM)], - ®isters[REGISTER_BYTE (L0_REGNUM)], - 16*REGISTER_RAW_SIZE (L0_REGNUM)); -} - -/* Store our register values back into the inferior. - If REGNO is -1, do this for all registers. - Otherwise, REGNO specifies which register (so we can save time). */ - -void -store_inferior_registers (ignored) - int ignored; -{ - struct regs inferior_registers; - struct fp_status inferior_fp_registers; - CORE_ADDR sp = *(CORE_ADDR *)®isters[REGISTER_BYTE (SP_REGNUM)]; - - write_inferior_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)], - 16*REGISTER_RAW_SIZE (L0_REGNUM)); - - memcpy (&inferior_registers.r_g1, ®isters[REGISTER_BYTE (G1_REGNUM)], - 15 * REGISTER_RAW_SIZE (G1_REGNUM)); - - inferior_registers.r_ps = - *(int *)®isters[REGISTER_BYTE (PS_REGNUM)]; - inferior_registers.r_pc = - *(int *)®isters[REGISTER_BYTE (PC_REGNUM)]; - inferior_registers.r_npc = - *(int *)®isters[REGISTER_BYTE (NPC_REGNUM)]; - inferior_registers.r_y = - *(int *)®isters[REGISTER_BYTE (Y_REGNUM)]; - - if (ptrace (PTRACE_SETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers, 0)) - perror("ptrace_setregs"); - - memcpy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)], - sizeof inferior_fp_registers.fpu_fr); - - if (ptrace (PTRACE_SETFPREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_fp_registers, 0)) - perror("ptrace_setfpregs"); -} - -/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory - in the NEW_SUN_PTRACE case. - It ought to be straightforward. But it appears that writing did - not write the data that I specified. I cannot understand where - it got the data that it actually did write. */ - -/* Copy LEN bytes from inferior's memory starting at MEMADDR - to debugger memory starting at MYADDR. */ - -read_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & -sizeof (int); - /* Round ending address up; get number of longwords that makes. */ - register int count - = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int); - /* Allocate buffer of that many longwords. */ - register int *buffer = (int *) alloca (count * sizeof (int)); - - /* Read all the longwords */ - for (i = 0; i < count; i++, addr += sizeof (int)) - { - buffer[i] = ptrace (1, inferior_pid, addr, 0); - } - - /* Copy appropriate bytes out of the buffer. */ - memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len); -} - -/* Copy LEN bytes of data from debugger memory at MYADDR - to inferior's memory at MEMADDR. - On failure (cannot write the inferior) - returns the value of errno. */ - -int -write_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & -sizeof (int); - /* Round ending address up; get number of longwords that makes. */ - register int count - = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int); - /* Allocate buffer of that many longwords. */ - register int *buffer = (int *) alloca (count * sizeof (int)); - extern int errno; - - /* Fill start and end extra bytes of buffer with existing memory data. */ - - buffer[0] = ptrace (1, inferior_pid, addr, 0); - - if (count > 1) - { - buffer[count - 1] - = ptrace (1, inferior_pid, - addr + (count - 1) * sizeof (int), 0); - } - - /* Copy data to be written over corresponding part of buffer */ - - bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len); - - /* Write the entire buffer. */ - - for (i = 0; i < count; i++, addr += sizeof (int)) - { - errno = 0; - ptrace (4, inferior_pid, addr, buffer[i]); - if (errno) - return errno; - } - - return 0; -} - -void -initialize () -{ - inferior_pid = 0; -} - -int -have_inferior_p () -{ - return inferior_pid != 0; -} |