diff options
Diffstat (limited to 'contrib/gdb/gdb/gdbserver/low-sparc.c')
| -rw-r--r-- | contrib/gdb/gdb/gdbserver/low-sparc.c | 148 |
1 files changed, 64 insertions, 84 deletions
diff --git a/contrib/gdb/gdb/gdbserver/low-sparc.c b/contrib/gdb/gdb/gdbserver/low-sparc.c index ddffaec..4b03140 100644 --- a/contrib/gdb/gdb/gdbserver/low-sparc.c +++ b/contrib/gdb/gdb/gdbserver/low-sparc.c @@ -1,23 +1,25 @@ /* Low level interface to ptrace, for the remote server for GDB. - Copyright (C) 1986, 1987, 1993 Free Software Foundation, Inc. + Copyright 1986, 1987, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002 + Free Software Foundation, Inc. -This file is part of GDB. + 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 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. + 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. */ + 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 "server.h" #include <sys/wait.h> #include "frame.h" #include "inferior.h" @@ -35,14 +37,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #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]; +static char my_registers[REGISTER_BYTES]; +char *registers = my_registers; /***************End MY defs*********************/ #include <sys/ptrace.h> @@ -50,20 +46,13 @@ char buf2[MAX_REGISTER_RAW_SIZE]; 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. */ + ALLARGS is a vector of program-name and args. */ int -create_inferior (program, allargs) - char *program; - char **allargs; +create_inferior (char *program, char **allargs) { int pid; @@ -86,22 +75,28 @@ create_inferior (program, allargs) return pid; } +/* Attaching is not supported. */ +int +myattach (int pid) +{ + return -1; +} + /* Kill the inferior process. Make us have no inferior. */ void -kill_inferior () +kill_inferior (void) { if (inferior_pid == 0) return; ptrace (8, inferior_pid, 0, 0); wait (0); - /*************inferior_died ();****VK**************/ +/*************inferior_died ();****VK**************/ } /* Return nonzero if the given thread is still alive. */ int -mythread_alive (pid) - int pid; +mythread_alive (int pid) { return 1; } @@ -109,13 +104,14 @@ mythread_alive (pid) /* Wait for process, returns status */ unsigned char -mywait (status) - char *status; +mywait (char *status) { int pid; union wait w; - pid = wait (&w); + enable_async_io (); + pid = waitpid (inferior_pid, &w, 0); + disable_async_io (); if (pid != inferior_pid) perror_with_name ("wait"); @@ -143,9 +139,7 @@ mywait (status) If SIGNAL is nonzero, give it that signal. */ void -myresume (step, signal) - int step; - int signal; +myresume (int step, int signal) { errno = 0; ptrace (step ? PTRACE_SINGLESTEP : PTRACE_CONT, inferior_pid, 1, signal); @@ -158,8 +152,7 @@ myresume (step, signal) marking them as valid so we won't fetch them again. */ void -fetch_inferior_registers (ignored) - int ignored; +fetch_inferior_registers (int ignored) { struct regs inferior_registers; struct fp_status inferior_fp_registers; @@ -172,32 +165,32 @@ fetch_inferior_registers (ignored) to the stack pointer. */ if (ptrace (PTRACE_GETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers, 0)) - perror("ptrace_getregs"); - + (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; + *(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, + (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0)) - perror("ptrace_getfpregs"); + 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)], + read_inferior_memory (*(CORE_ADDR *) & registers[REGISTER_BYTE (SP_REGNUM)], ®isters[REGISTER_BYTE (L0_REGNUM)], - 16*REGISTER_RAW_SIZE (L0_REGNUM)); + 16 * REGISTER_RAW_SIZE (L0_REGNUM)); } /* Store our register values back into the inferior. @@ -205,38 +198,37 @@ fetch_inferior_registers (ignored) Otherwise, REGNO specifies which register (so we can save time). */ void -store_inferior_registers (ignored) - int ignored; +store_inferior_registers (int ignored) { struct regs inferior_registers; struct fp_status inferior_fp_registers; - CORE_ADDR sp = *(CORE_ADDR *)®isters[REGISTER_BYTE (SP_REGNUM)]; + CORE_ADDR sp = *(CORE_ADDR *) & registers[REGISTER_BYTE (SP_REGNUM)]; write_inferior_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)], - 16*REGISTER_RAW_SIZE (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)]; + *(int *) ®isters[REGISTER_BYTE (PS_REGNUM)]; inferior_registers.r_pc = - *(int *)®isters[REGISTER_BYTE (PC_REGNUM)]; + *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)]; inferior_registers.r_npc = - *(int *)®isters[REGISTER_BYTE (NPC_REGNUM)]; + *(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)]; inferior_registers.r_y = - *(int *)®isters[REGISTER_BYTE (Y_REGNUM)]; + *(int *) ®isters[REGISTER_BYTE (Y_REGNUM)]; if (ptrace (PTRACE_SETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers, 0)) - perror("ptrace_setregs"); + (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"); + (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0)) + perror ("ptrace_setfpregs"); } /* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory @@ -248,14 +240,12 @@ store_inferior_registers (ignored) /* 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; +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 & -sizeof (int); + 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); @@ -278,14 +268,11 @@ read_inferior_memory (memaddr, myaddr, len) returns the value of errno. */ int -write_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; +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 & -sizeof (int); + 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); @@ -322,13 +309,6 @@ write_inferior_memory (memaddr, myaddr, len) } void -initialize () -{ - inferior_pid = 0; -} - -int -have_inferior_p () +initialize_low (void) { - return inferior_pid != 0; } |
