--- /dev/null
+/* Native dependent code for Mach 386's for GDB, the GNU debugger.
+ Copyright (C) 1986, 1987, 1989, 1991, 1992 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"
+
+#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);
+}
+
+
+
+/* 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;
+ }
+}
--- /dev/null
+/* Native definitions for Mach on an Intel 386
+ Copyright (C) 1986, 1987, 1989, 1991, 1992 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. */
+
+/* Do implement the attach and detach commands. */
+/* #define ATTACH_DETACH 1 */
+
+/* Override copies of {fetch,store}_inferior_registers in infptrace.c. */
+#define FETCH_INFERIOR_REGISTERS
+
projects / binutils-gdb.git / commitdiff