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New NetBSD/sparc GDB native dependent module, cloned from the new

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sp64nbsd-nat.c.  (new-toolchain was using the SunOS 4 native module!)
This commit is contained in:
thorpej 2001-12-11 04:03:55 +00:00
parent cef2225213
commit e787c227a0
3 changed files with 344 additions and 2 deletions
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2
gnu/dist/toolchain/gdb/config/sparc/nbsd.mh vendored
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@ -2,5 +2,5 @@
XDEPFILES= ser-tcp.o
XM_FILE= xm-nbsd.h
NAT_FILE= nm-nbsd.h
NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparc-nat.o solib.o
NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparcnbsd-nat.o solib.o
HOST_IPC=-DBSD_IPC

2
gnu/dist/toolchain/gdb/config/sparc/nbsdelf.mh vendored
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@ -2,5 +2,5 @@
XDEPFILES= ser-tcp.o
XM_FILE= xm-nbsd.h
NAT_FILE= nm-nbsdelf.h
NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparc-nat.o solib.o
NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparcnbsd-nat.o solib.o
HOST_IPC=-DBSD_IPC

342
gnu/dist/toolchain/gdb/sparcnbsd-nat.c vendored Normal file
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@ -0,0 +1,342 @@
/* Functions specific to running gdb native on a SPARC running NetBSD.
Copyright 1989, 1992, 1993, 1994, 1996 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 "defs.h"
#include "inferior.h"
#include "target.h"
#include "gdbcore.h"
#include <signal.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#include <machine/reg.h>
#include <machine/pcb.h>
/* We don't store all registers immediately when requested, since they
get sent over in large chunks anyway. Instead, we accumulate most
of the changes and send them over once. "deferred_stores" keeps
track of which sets of registers we have locally-changed copies of,
so we only need send the groups that have changed. */
#define INT_REGS 1
#define STACK_REGS 2
#define FP_REGS 4
static void
supply_regs (regs)
char *regs;
{
CORE_ADDR sp;
char regbuf[16 * 4];
int i;
/* %g0 is always 0. */
memset (regbuf, 0, sizeof (regbuf));
supply_register (G0_REGNUM, regbuf);
/* Global regs start 16 bytes into the buffer. */
for (i = 1; i < 8; i++)
supply_register (G0_REGNUM + i, regs + (16 + (i * 4)));
/* Output registers start 48 bytes into the buffer. */
for (i = 0; i < 8; i++)
supply_register (O0_REGNUM + i, regs + (48 + (i * 4)));
supply_register (PS_REGNUM, regs + 0);
supply_register (PC_REGNUM, regs + 4);
supply_register (NPC_REGNUM, regs + 8);
supply_register (Y_REGNUM, regs + 12);
sp = *(CORE_ADDR *)&registers[REGISTER_BYTE (SP_REGNUM)];
if (0 != target_read_memory (sp, regbuf,
16 * REGISTER_RAW_SIZE (L0_REGNUM)))
{
/* fprintf_unfiltered so user can still use gdb */
fprintf_unfiltered (gdb_stderr,
"Couldn't read input and local registers from stack\n");
}
else
{
for (i = 0; i < 16; i++)
supply_register (L0_REGNUM + i, &regbuf[i * 4]);
}
}
static void
supply_fakeregs ()
{
/* If we don't set these valid, read_register_bytes() rereads
all the regs every time it is called! FIXME. */
register_valid[WIM_REGNUM] = 1; /* Not true yet, FIXME */
register_valid[TBR_REGNUM] = 1; /* Not true yet, FIXME */
register_valid[CPS_REGNUM] = 1; /* Not true yet, FIXME */
}
static void
supply_fpregs (fregs)
char *fregs;
{
int i;
/* 32 floats */
for (i = 0; i < 32; i++)
supply_register (FP0_REGNUM + i, fregs + (i * 4));
/* %fsr */
supply_register (FPS_REGNUM, fregs + 128);
}
static void
fetch_core_registers PARAMS ((char *, unsigned int, int, CORE_ADDR));
/* Fetch one or more registers from the inferior. REGNO == -1 to get
them all. We actually fetch more than requested, when convenient,
marking them as valid so we won't fetch them again. */
void
fetch_inferior_registers (regno)
int regno;
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
int i;
/* We should never be called with deferred stores, because a prerequisite
for writing regs is to have fetched them all (PREPARE_TO_STORE), sigh. */
if (deferred_stores)
abort ();
DO_DEFERRED_STORES;
/* Global and Out regs are fetched directly, as well as the control
registers. If we're getting one of the in or local regs,
and the stack pointer has not yet been fetched,
we have to do that first, since they're found in memory relative
to the stack pointer. */
if (regno < O7_REGNUM /* including -1 */
|| regno >= Y_REGNUM
|| (!register_valid[SP_REGNUM] && regno <= I7_REGNUM))
{
if (0 != ptrace (PTRACE_GETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0))
perror ("ptrace_getregs");
supply_regs ((char *) &inferior_registers);
supply_fakeregs ();
}
/* Floating point registers */
if (regno == -1 ||
regno == FPS_REGNUM ||
(regno >= FP0_REGNUM && regno <= FP0_REGNUM + 31))
{
if (0 != ptrace (PTRACE_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0))
perror ("ptrace_getfpregs");
supply_fpregs ((char *) &inferior_fp_registers);
}
}
/* 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_status inferior_fp_registers;
int wanna_store = INT_REGS + STACK_REGS + FP_REGS;
/* First decide which pieces of machine-state we need to modify.
Default for regno == -1 case is all pieces. */
if (regno >= 0)
if (FP0_REGNUM <= regno && regno < FP0_REGNUM + 32)
{
wanna_store = FP_REGS;
}
else
{
if (regno == SP_REGNUM)
wanna_store = INT_REGS + STACK_REGS;
else if (regno < L0_REGNUM || regno > I7_REGNUM)
wanna_store = INT_REGS;
else if (regno == FPS_REGNUM)
wanna_store = FP_REGS;
else
wanna_store = STACK_REGS;
}
/* See if we're forcing the stores to happen now, or deferring. */
if (regno == -2)
{
wanna_store = deferred_stores;
deferred_stores = 0;
}
else
{
if (wanna_store == STACK_REGS)
{
/* Fall through and just store one stack reg. If we deferred
it, we'd have to store them all, or remember more info. */
}
else
{
deferred_stores |= wanna_store;
return;
}
}
if (wanna_store & STACK_REGS)
{
CORE_ADDR sp = *(CORE_ADDR *) & registers[REGISTER_BYTE (SP_REGNUM)];
if (regno < 0 || regno == SP_REGNUM)
{
if (!register_valid[L0_REGNUM + 5])
abort ();
target_write_memory (sp,
&registers[REGISTER_BYTE (L0_REGNUM)],
16 * REGISTER_RAW_SIZE (L0_REGNUM));
}
else
{
if (!register_valid[regno])
abort ();
target_write_memory (sp + REGISTER_BYTE (regno) - REGISTER_BYTE (L0_REGNUM),
&registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
}
}
if (wanna_store & INT_REGS)
{
if (!register_valid[G1_REGNUM])
abort ();
memcpy (&inferior_registers.r_g1, &registers[REGISTER_BYTE (G1_REGNUM)],
15 * REGISTER_RAW_SIZE (G1_REGNUM));
inferior_registers.r_ps =
*(int *) &registers[REGISTER_BYTE (PS_REGNUM)];
inferior_registers.r_pc =
*(int *) &registers[REGISTER_BYTE (PC_REGNUM)];
inferior_registers.r_npc =
*(int *) &registers[REGISTER_BYTE (NPC_REGNUM)];
inferior_registers.r_y =
*(int *) &registers[REGISTER_BYTE (Y_REGNUM)];
if (0 != ptrace (PTRACE_SETREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_registers, 0))
perror ("ptrace_setregs");
}
if (wanna_store & FP_REGS)
{
if (!register_valid[FP0_REGNUM + 9])
abort ();
memcpy (&inferior_fp_registers, &registers[REGISTER_BYTE (FP0_REGNUM)],
sizeof inferior_fp_registers.fpu_fr);
memcpy (&inferior_fp_registers.Fpu_fsr,
&registers[REGISTER_BYTE (FPS_REGNUM)], sizeof (FPU_FSR_TYPE));
if (0 !=
ptrace (PTRACE_SETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0))
perror ("ptrace_setfpregs");
}
}
static void
fetch_core_registers (core_reg_sect, core_reg_size, which, ignore)
char *core_reg_sect;
unsigned core_reg_size;
int which;
CORE_ADDR ignore; /* reg addr, unused in this version */
{
struct md_coredump *core = (struct md_coredump *) core_reg_sect;
/* Integer registers. */
supply_regs ((char *) &core->md_tf);
/* Floating point registers. */
supply_fpregs ((char *) &core->md_fpstate);
}
static void
fetch_elfcore_registers (core_reg_sect, core_reg_size, which, ignore)
char *core_reg_sect;
unsigned core_reg_size;
int which;
CORE_ADDR ignore;
{
switch (which)
{
case 0: /* Integer registers */
if (core_reg_size != sizeof (struct reg))
warning ("Wrong size register set in core file.");
else
supply_regs (core_reg_sect);
break;
case 2: /* Floating point registers */
if (core_reg_size != sizeof (struct fpreg))
warning ("Wrong size FP register set in core file.");
else
supply_fpregs (core_reg_sect);
break;
default:
/* Don't know what kind of register request this is; just ignore it. */
break;
}
}
/* Register that we are able to handle sparc core file formats.
FIXME: is this really bfd_target_unknown_flavour? */
static struct core_fns sparcnbsd_core_fns =
{
bfd_target_unknown_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_core_registers, /* core_read_registers */
NULL /* next */
};
static struct core_fns sparcnbsd_elfcore_fns =
{
bfd_target_elf_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_elfcore_registers, /* core_read_registers */
NULL /* next */
};
void
_initialize_sparcnbsd_nat ()
{
add_core_fns (&sparcnbsd_core_fns);
add_core_fns (&sparcnbsd_elfcore_fns);
}