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i386mach host/target/native separation

This commit is contained in:
K. Richard Pixley 1992-10-16 22:57:36 +00:00
parent d9548d448c
commit a113beac21
7 changed files with 190 additions and 10 deletions
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3
gdb/.Sanitize
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@ -107,6 +107,7 @@ i386-stub.c
i386-tdep.c
i386-xdep.c
i386b-nat.c
i386mach-nat.c
i387-tdep.c
i960-pinsn.c
i960-tdep.c
@ -129,7 +130,6 @@ m68k-tdep.c
m88k-nat.c
m88k-pinsn.c
m88k-tdep.c
mach386-xdep.c
main.c
maint.c
mem-break.c
@ -145,6 +145,7 @@ nindy-share
nindy-tdep.c
nm-delta88.h
nm-i386bsd.h
nm-i386mach.h
nm-irix3.h
nm-irix4.h
nm-m88k.h

12
gdb/ChangeLog
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@ -1,5 +1,17 @@
Fri Oct 16 13:06:08 1992 K. Richard Pixley (rich@sendai.cygnus.com)
Native support for i386mach (untested).
* config/i386mach.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mach386-xdep.o.
(NAT_FILE, NATDEPFILES): new macros.
* Makefile.in (HFILES): added nm-i386mach.h.
* nm-i386mach.h, i386mach-nat.c: new files.
* mach386-xdep.c: removed.
* xm-i386mach.h: updated copyright.
(ATTACH_DETACH, FETCH_INFERIOR_REGISTERS): removed to
nm-i386mach.h.
Native separation for go32 (untested).
* config/go32.mh (NAT_FILE, NATDEPFILES): new macros.

3
gdb/Makefile.in
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@ -254,7 +254,8 @@ HFILES= breakpoint.h buildsym.h call-cmds.h command.h defs.h \
tm-68k.h tm-hppa.h tm-i960.h tm-sparc.h tm-sunos.h tm-sysv4.h \
xm-m68k.h xm-sparc.h xm-sysv4.h xm-vax.h \
nm-irix3.h nm-irix4.h nm-mips.h nm-rs6000.h nm-sun2.h nm-sun3.h \
nm-sun4os4.h nm-trash.h nm-news.h nm-ultra3.h nm-m88k.h
nm-sun4os4.h nm-trash.h nm-news.h nm-ultra3.h nm-m88k.h \
nm-i386mach.h
REMOTE_EXAMPLES = m68k-stub.c i386-stub.c sparc-stub.c rem-multi.shar

4
gdb/config/i386mach.mh
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@ -1,4 +1,6 @@
# Host: Intel 386 running Mach
XDEPFILES= infptrace.o inftarg.o fork-child.o mach386-xdep.o
XDEPFILES=
XM_FILE= xm-i386mach.h
NAT_FILE= nm-i386mach.h
NATDEPFILES= infptrace.o inftarg.o fork-child.o i386mach-nat.o

145
gdb/i386mach-nat.c Normal file
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@ -0,0 +1,145 @@
/* 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,&registers[REGISTER_BYTE (FP0_REGNUM)],
sizeof inferior_fp_registers.f_st);
bcopy (&inferior_fp_registers.f_ctrl,
&registers[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 (&registers[REGISTER_BYTE (FP0_REGNUM)],inferior_fp_registers.f_st,
sizeof inferior_fp_registers.f_st);
bcopy (&registers[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,
&registers[REGISTER_BYTE (FP0_REGNUM)],
core_reg_size); /* FIXME, probably bogus */
#endif
#ifdef FPC_REGNUM
bcopy (&corestr.c_fpu.f_fpstatus.f_ctrl,
&registers[REGISTER_BYTE (FPC_REGNUM)],
sizeof corestr.c_fpu.f_fpstatus -
sizeof corestr.c_fpu.f_fpstatus.f_st);
#endif
break;
}
}

25
gdb/nm-i386mach.h Normal file
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@ -0,0 +1,25 @@
/* 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

8
gdb/xm-i386mach.h
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@ -1,5 +1,5 @@
/* Definitions to make GDB run on Mach on an Intel 386
Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
Copyright (C) 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
This file is part of GDB.
@ -35,12 +35,6 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define BROKEN_LARGE_ALLOCA
/* 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
#define PREPARE_TO_STORE() read_register_bytes (0, NULL, REGISTER_BYTES)
/* <errno.h> only defines this if __STDC__!!! */