diff options
Diffstat (limited to 'gdb/mach386-xdep.c')
| -rw-r--r-- | gdb/mach386-xdep.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/gdb/mach386-xdep.c b/gdb/mach386-xdep.c index 8f7ca166a4..e69de29bb2 100644 --- a/gdb/mach386-xdep.c +++ b/gdb/mach386-xdep.c @@ -1,164 +0,0 @@ -/* Machine-dependent code for host Mach 386's for GDB, the GNU debugger. - Copyright (C) 1986, 1987, 1989, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include "defs.h" -#include "frame.h" -#include "inferior.h" -#include "gdbcore.h" - -#if defined (GDB_TARGET_IS_MACH386) - -#include <sys/param.h> -#include <sys/dir.h> -#include <sys/user.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <fcntl.h> - -#include <sys/ptrace.h> -#include <machine/reg.h> - -#include <sys/file.h> -#include <sys/stat.h> -#include <sys/core.h> - - -void -fetch_inferior_registers (regno) - int regno; /* Original value discarded */ -{ - struct regs inferior_registers; - struct fp_state inferior_fp_registers; - extern char registers[]; - - registers_fetched (); - - ptrace (PTRACE_GETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers); - ptrace (PTRACE_GETFPREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_fp_registers); - - bcopy (&inferior_registers, registers, sizeof inferior_registers); - - bcopy (inferior_fp_registers.f_st,®isters[REGISTER_BYTE (FP0_REGNUM)], - sizeof inferior_fp_registers.f_st); - bcopy (&inferior_fp_registers.f_ctrl, - ®isters[REGISTER_BYTE (FPC_REGNUM)], - sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st); -} - -/* 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 (regno) - int regno; -{ - struct regs inferior_registers; - struct fp_state inferior_fp_registers; - extern char registers[]; - - bcopy (registers, &inferior_registers, 20 * 4); - - bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)],inferior_fp_registers.f_st, - sizeof inferior_fp_registers.f_st); - bcopy (®isters[REGISTER_BYTE (FPC_REGNUM)], - &inferior_fp_registers.f_ctrl, - sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st); - -#ifdef PTRACE_FP_BUG - if (regno == FP_REGNUM || regno == -1) - /* Storing the frame pointer requires a gross hack, in which an - instruction that moves eax into ebp gets single-stepped. */ - { - int stack = inferior_registers.r_reg[SP_REGNUM]; - int stuff = ptrace (PTRACE_PEEKDATA, inferior_pid, - (PTRACE_ARG3_TYPE) stack); - int reg = inferior_registers.r_reg[EAX]; - inferior_registers.r_reg[EAX] = - inferior_registers.r_reg[FP_REGNUM]; - ptrace (PTRACE_SETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers); - ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack, 0xc589); - ptrace (PTRACE_SINGLESTEP, inferior_pid, (PTRACE_ARG3_TYPE) stack, 0); - wait (0); - ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack, stuff); - inferior_registers.r_reg[EAX] = reg; - } -#endif - ptrace (PTRACE_SETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers); - ptrace (PTRACE_SETFPREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_fp_registers); -} - -#else /* Not mach386 target. */ - -/* These functions shouldn't be called when we're cross-debugging. */ - -/* ARGSUSED */ -void -fetch_inferior_registers (regno) - int regno; -{ -} - -/* ARGSUSED */ -void -store_inferior_registers (regno) - int regno; -{ -} - -#endif /* Not mach386 target. */ - -/* Work with core files, for GDB. */ - -void -fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) - char *core_reg_sect; - unsigned core_reg_size; - int which; - unsigned int reg_addr; /* Unused in this version */ -{ - int val; - extern char registers[]; - - switch (which) { - case 0: - case 1: - bcopy (core_reg_sect, registers, core_reg_size); - break; - - case 2: -#ifdef FP0_REGNUM - bcopy (core_reg_sect, - ®isters[REGISTER_BYTE (FP0_REGNUM)], - core_reg_size); /* FIXME, probably bogus */ -#endif -#ifdef FPC_REGNUM - bcopy (&corestr.c_fpu.f_fpstatus.f_ctrl, - ®isters[REGISTER_BYTE (FPC_REGNUM)], - sizeof corestr.c_fpu.f_fpstatus - - sizeof corestr.c_fpu.f_fpstatus.f_st); -#endif - break; - } -} |
