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Diffstat (limited to 'gdb/gdbserver/low-hppabsd.c')
| -rw-r--r-- | gdb/gdbserver/low-hppabsd.c | 355 |
1 files changed, 0 insertions, 355 deletions
diff --git a/gdb/gdbserver/low-hppabsd.c b/gdb/gdbserver/low-hppabsd.c deleted file mode 100644 index 3287923..0000000 --- a/gdb/gdbserver/low-hppabsd.c +++ /dev/null @@ -1,355 +0,0 @@ -/* Low level interface to ptrace, for the remote server for GDB. - Copyright 1995, 1996, 1999, 2000, 2001, 2002 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 "server.h" -#include <sys/wait.h> -#include "frame.h" -#include "inferior.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*********************/ -static char my_registers[REGISTER_BYTES]; -char *registers = my_registers; -/***************End MY defs*********************/ - -#include <sys/ptrace.h> -#include <machine/reg.h> - -extern int errno; - -/* Start an inferior process and returns its pid. - ALLARGS is a vector of program-name and args. */ - -int -create_inferior (char *program, char **allargs) -{ - int pid; - - pid = fork (); - if (pid < 0) - perror_with_name ("fork"); - - if (pid == 0) - { - ptrace (PT_TRACE_ME, 0, 0, 0, 0); - - 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 (void) -{ - if (inferior_pid == 0) - return; - ptrace (8, inferior_pid, 0, 0, 0); - wait (0); -/*************inferior_died ();****VK**************/ -} - -/* Attaching is not supported. */ -int -myattach (int pid) -{ - return -1; -} - -/* Return nonzero if the given thread is still alive. */ -int -mythread_alive (int pid) -{ - return 1; -} - -/* Wait for process, returns status */ - -unsigned char -mywait (char *status) -{ - int pid; - union wait w; - - enable_async_io (); - pid = waitpid (inferior_pid, &w, 0); - disable_async_io (); - 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 (int step, int signal) -{ - errno = 0; - ptrace (step ? PT_STEP : PT_CONTINUE, inferior_pid, 1, signal, 0); - if (errno) - perror_with_name ("ptrace"); -} - - -#if !defined (offsetof) -#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) -#endif - -/* U_REGS_OFFSET is the offset of the registers within the u area. */ -#if !defined (U_REGS_OFFSET) -#define U_REGS_OFFSET \ - ptrace (PT_READ_U, inferior_pid, \ - (PTRACE_ARG3_TYPE) (offsetof (struct user, u_ar0)), 0) \ - - KERNEL_U_ADDR -#endif - -CORE_ADDR -register_addr (int regno, CORE_ADDR blockend) -{ - CORE_ADDR addr; - - if (regno < 0 || regno >= NUM_REGS) - error ("Invalid register number %d.", regno); - - REGISTER_U_ADDR (addr, blockend, regno); - - return addr; -} - -/* Fetch one register. */ - -static void -fetch_register (int regno) -{ - register unsigned int regaddr; - char buf[MAX_REGISTER_RAW_SIZE]; - register int i; - - /* Offset of registers within the u area. */ - unsigned int offset; - - offset = U_REGS_OFFSET; - - regaddr = register_addr (regno, offset); - for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) - { - errno = 0; - *(int *) ®isters[regno * 4 + i] = ptrace (PT_RUREGS, inferior_pid, - (PTRACE_ARG3_TYPE) regaddr, 0, 0); - regaddr += sizeof (int); - if (errno != 0) - { - /* Warning, not error, in case we are attached; sometimes the - kernel doesn't let us at the registers. */ - char *err = strerror (errno); - char *msg = alloca (strlen (err) + 128); - sprintf (msg, "reading register %d: %s", regno, err); - error (msg); - goto error_exit; - } - } -error_exit:; -} - -/* Fetch all registers, or just one, from the child process. */ - -void -fetch_inferior_registers (int regno) -{ - if (regno == -1 || regno == 0) - for (regno = 0; regno < NUM_REGS; regno++) - fetch_register (regno); - else - fetch_register (regno); -} - -/* 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 (int regno) -{ - register unsigned int regaddr; - char buf[80]; - extern char registers[]; - register int i; - unsigned int offset = U_REGS_OFFSET; - int scratch; - - if (regno >= 0) - { - if (CANNOT_STORE_REGISTER (regno)) - return; - regaddr = register_addr (regno, offset); - errno = 0; - if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM) - { - scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3; - ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, - scratch, 0); - if (errno != 0) - { - /* Error, even if attached. Failing to write these two - registers is pretty serious. */ - sprintf (buf, "writing register number %d", regno); - perror_with_name (buf); - } - } - else - for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) - { - errno = 0; - ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, - *(int *) ®isters[REGISTER_BYTE (regno) + i], 0); - if (errno != 0) - { - /* Warning, not error, in case we are attached; sometimes the - kernel doesn't let us at the registers. */ - char *err = strerror (errno); - char *msg = alloca (strlen (err) + 128); - sprintf (msg, "writing register %d: %s", - regno, err); - error (msg); - return; - } - regaddr += sizeof (int); - } - } - else - for (regno = 0; regno < NUM_REGS; regno++) - store_inferior_registers (regno); -} - -/* 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. */ - -void -read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len) -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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, 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 (CORE_ADDR memaddr, char *myaddr, int len) -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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, 0); - - if (count > 1) - { - buffer[count - 1] - = ptrace (1, inferior_pid, - addr + (count - 1) * sizeof (int), 0, 0); - } - - /* Copy data to be written over corresponding part of buffer */ - - memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len); - - /* Write the entire buffer. */ - - for (i = 0; i < count; i++, addr += sizeof (int)) - { - errno = 0; - ptrace (4, inferior_pid, addr, buffer[i], 0); - if (errno) - return errno; - } - - return 0; -} - -void -initialize_low (void) -{ -} |