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* lynx-nat.c: Add Sparc support. 

* sparcly-nat.c:  Remove.  It's useless.
	* config/sparc/nm-sparclynx.h:  Rewrite.
	* config/sparc/sparclynx.mh (NATDEPFILES):  Replace sparcly-nat.o
	with lynx-nat.o
	* config/sparc/tm-sparclynx.h:  Rewrite.
This commit is contained in:
Stu Grossman 1994-01-22 01:58:55 +00:00
parent 24845456a3
commit d575ddc0ef
6 changed files with 304 additions and 419 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
gdb/ChangeLog
View File

@ -1,3 +1,12 @@
Fri Jan 21 17:49:28 1994 Stu Grossman (grossman at cygnus.com)
* lynx-nat.c: Add Sparc support.
* sparcly-nat.c: Remove. It's useless.
* config/sparc/nm-sparclynx.h: Rewrite.
* config/sparc/sparclynx.mh (NATDEPFILES): Replace sparcly-nat.o
with lynx-nat.o
* config/sparc/tm-sparclynx.h: Rewrite.
Fri Jan 21 19:08:48 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com)
* rs6000-pinsn.c: Use the new disassembler in the opcodes

41
gdb/config/sparc/nm-sparclynx.h
View File

@ -20,45 +20,6 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef NM_SPARCLYNX_H
#define NM_SPARCLYNX_H
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/mem.h>
#include <sys/signal.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/itimer.h>
#include <sys/file.h>
#include <sys/proc.h>
#include "thread.h"
/* This is the amount to subtract from u.u_ar0 to get the offset in
the core file of the register values. */
#define KERNEL_U_ADDR USRSTACK
#undef FLOAT_INFO /* No float info yet */
#define PTRACE_ARG3_TYPE char*
/* Override copies of {fetch,store}_inferior_registers in infptrace.c. */
#define FETCH_INFERIOR_REGISTERS
/* Thread ID of stopped thread. */
#define WIFTID(x) (((union wait *)&x)->w_tid)
#define CHILD_WAIT
extern int child_wait PARAMS ((int pid, int *status));
#if 0 /* need sparcly-nat.c to define this */
/* Lynx needs a special definition of this so that we can
print out the pid and thread number seperatly. */
#undef target_pid_to_str
#define target_pid_to_str(PID) sparclynx_pid_to_str (PID)
extern char *sparclynx_pid_to_str PARAMS ((int pid));
#endif
#include "nm-lynx.h"
#endif /* NM_SPARCLYNX_H */

2
gdb/config/sparc/sparclynx.mh
View File

@ -2,7 +2,7 @@
XM_FILE= xm-sparclynx.h
XDEPFILES=
NAT_FILE= nm-sparclynx.h
NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparcly-nat.o
NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o lynx-nat.o
REGEX=regex.o
REGEX1=regex.o
GDBSERVER_LIBS= -lbsd

7
gdb/config/sparc/tm-sparclynx.h
View File

@ -20,12 +20,9 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef TM_SPARCLYNX_H
#define TM_SPARCLYNX_H
/* Use generic Sparc definitions. */
#include "tm-lynx.h"
/* Use generic Sparc definitions. */
#include "sparc/tm-sparc.h"
/* Include COFF shared library support. */
#include "coff-solib.h"
#endif /* TM_SPARCLYNX_H */

294
gdb/lynx-nat.c
View File

@ -24,6 +24,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <sys/ptrace.h>
#include <sys/wait.h>
#include <sys/fpp.h>
static unsigned long registers_addr PARAMS ((int pid));
@ -95,6 +96,287 @@ static int regmap[] =
};
#endif
#ifdef SPARC
/* Mappings from tm-sparc.h */
#define FX(ENTRY)(offsetof(struct fcontext, ENTRY))
static int regmap[] =
{
-1, /* g0 */
X(g1),
X(g2),
X(g3),
X(g4),
-1, /* g5->g7 aren't saved by Lynx */
-1,
-1,
X(o[0]),
X(o[1]),
X(o[2]),
X(o[3]),
X(o[4]),
X(o[5]),
X(o[6]), /* sp */
X(o[7]), /* ra */
-1,-1,-1,-1,-1,-1,-1,-1, /* l0 -> l7 */
-1,-1,-1,-1,-1,-1,-1,-1, /* i0 -> i7 */
FX(f.fregs[0]), /* f0 */
FX(f.fregs[1]),
FX(f.fregs[2]),
FX(f.fregs[3]),
FX(f.fregs[4]),
FX(f.fregs[5]),
FX(f.fregs[6]),
FX(f.fregs[7]),
FX(f.fregs[8]),
FX(f.fregs[9]),
FX(f.fregs[10]),
FX(f.fregs[11]),
FX(f.fregs[12]),
FX(f.fregs[13]),
FX(f.fregs[14]),
FX(f.fregs[15]),
FX(f.fregs[16]),
FX(f.fregs[17]),
FX(f.fregs[18]),
FX(f.fregs[19]),
FX(f.fregs[20]),
FX(f.fregs[21]),
FX(f.fregs[22]),
FX(f.fregs[23]),
FX(f.fregs[24]),
FX(f.fregs[25]),
FX(f.fregs[26]),
FX(f.fregs[27]),
FX(f.fregs[28]),
FX(f.fregs[29]),
FX(f.fregs[30]),
FX(f.fregs[31]),
X(y),
X(psr),
X(wim),
X(tbr),
X(pc),
X(npc),
FX(fsr), /* fpsr */
-1, /* cpsr */
};
#endif
#ifdef SPARC
/* This routine handles some oddball cases for Sparc registers and LynxOS.
In partucular, it causes refs to G0, g5->7, and all fp regs to return zero.
It also handles knows where to find the I & L regs on the stack. */
void
fetch_inferior_registers (regno)
int regno;
{
int whatregs = 0;
#define WHATREGS_FLOAT 1
#define WHATREGS_GEN 2
#define WHATREGS_STACK 4
if (regno == -1)
whatregs = WHATREGS_FLOAT | WHATREGS_GEN | WHATREGS_STACK;
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
whatregs = WHATREGS_STACK;
else if (regno >= FP0_REGNUM && regno < FP0_REGNUM + 32)
whatregs = WHATREGS_FLOAT;
else
whatregs = WHATREGS_GEN;
if (whatregs & WHATREGS_GEN)
{
struct econtext ec; /* general regs */
char buf[MAX_REGISTER_RAW_SIZE];
int retval;
int i;
errno = 0;
retval = ptrace (PTRACE_GETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &ec,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
memset (buf, 0, REGISTER_RAW_SIZE (G0_REGNUM));
supply_register (G0_REGNUM, buf);
supply_register (TBR_REGNUM, (char *)&ec.tbr);
memcpy (&registers[REGISTER_BYTE (G1_REGNUM)], &ec.g1,
4 * REGISTER_RAW_SIZE (G1_REGNUM));
for (i = G1_REGNUM; i <= G1_REGNUM + 3; i++)
register_valid[i] = 1;
supply_register (PS_REGNUM, (char *)&ec.psr);
supply_register (Y_REGNUM, (char *)&ec.y);
supply_register (PC_REGNUM, (char *)&ec.pc);
supply_register (NPC_REGNUM, (char *)&ec.npc);
supply_register (WIM_REGNUM, (char *)&ec.wim);
memcpy (&registers[REGISTER_BYTE (O0_REGNUM)], ec.o,
8 * REGISTER_RAW_SIZE (O0_REGNUM));
for (i = O0_REGNUM; i <= O0_REGNUM + 7; i++)
register_valid[i] = 1;
}
if (whatregs & WHATREGS_STACK)
{
CORE_ADDR sp;
int i;
sp = read_register (SP_REGNUM);
target_xfer_memory (sp, &registers[REGISTER_BYTE(I0_REGNUM)],
8 * REGISTER_RAW_SIZE (I0_REGNUM), 0);
for (i = I0_REGNUM; i <= I7_REGNUM; i++)
register_valid[i] = 1;
sp += 8 * REGISTER_RAW_SIZE (I0_REGNUM);
target_xfer_memory (sp, &registers[REGISTER_BYTE(L0_REGNUM)],
8 * REGISTER_RAW_SIZE (L0_REGNUM), 0);
for (i = L0_REGNUM; i <= L0_REGNUM + 7; i++)
register_valid[i] = 1;
}
if (whatregs & WHATREGS_FLOAT)
{
struct fcontext fc; /* fp regs */
int retval;
int i;
errno = 0;
retval = ptrace (PTRACE_GETFPREGS, inferior_pid, (PTRACE_ARG3_TYPE) &fc,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], fc.f.fregs,
32 * REGISTER_RAW_SIZE (FP0_REGNUM));
for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++)
register_valid[i] = 1;
supply_register (FPS_REGNUM, (char *)&fc.fsr);
}
}
/* This routine handles storing of the I & L regs for the Sparc. The trick
here is that they actually live on the stack. The really tricky part is
that when changing the stack pointer, the I & L regs must be written to
where the new SP points, otherwise the regs will be incorrect when the
process is started up again. We assume that the I & L regs are valid at
this point. */
void
store_inferior_registers (regno)
int regno;
{
int whatregs = 0;
if (regno == -1)
whatregs = WHATREGS_FLOAT | WHATREGS_GEN | WHATREGS_STACK;
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
whatregs = WHATREGS_STACK;
else if (regno >= FP0_REGNUM && regno < FP0_REGNUM + 32)
whatregs = WHATREGS_FLOAT;
else if (regno == SP_REGNUM)
whatregs = WHATREGS_STACK | WHATREGS_GEN;
else
whatregs = WHATREGS_GEN;
if (whatregs & WHATREGS_GEN)
{
struct econtext ec; /* general regs */
int retval;
ec.tbr = read_register (TBR_REGNUM);
memcpy (&ec.g1, &registers[REGISTER_BYTE (G1_REGNUM)],
4 * REGISTER_RAW_SIZE (G1_REGNUM));
ec.psr = read_register (PS_REGNUM);
ec.y = read_register (Y_REGNUM);
ec.pc = read_register (PC_REGNUM);
ec.npc = read_register (NPC_REGNUM);
ec.wim = read_register (WIM_REGNUM);
memcpy (ec.o, &registers[REGISTER_BYTE (O0_REGNUM)],
8 * REGISTER_RAW_SIZE (O0_REGNUM));
errno = 0;
retval = ptrace (PTRACE_SETREGS, inferior_pid, (PTRACE_ARG3_TYPE) &ec,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
}
if (whatregs & WHATREGS_STACK)
{
int regoffset;
CORE_ADDR sp;
sp = read_register (SP_REGNUM);
if (regno == -1 || regno == SP_REGNUM)
{
if (!register_valid[L0_REGNUM+5])
abort();
target_xfer_memory (sp, &registers[REGISTER_BYTE (I0_REGNUM)],
8 * REGISTER_RAW_SIZE (I0_REGNUM), 1);
sp += 8 * REGISTER_RAW_SIZE (I0_REGNUM);
target_xfer_memory (sp, &registers[REGISTER_BYTE (L0_REGNUM)],
8 * REGISTER_RAW_SIZE (L0_REGNUM), 1);
}
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
{
if (!register_valid[regno])
abort();
if (regno >= L0_REGNUM && regno <= L0_REGNUM + 7)
regoffset = REGISTER_BYTE (regno) - REGISTER_BYTE (L0_REGNUM)
+ 8 * REGISTER_RAW_SIZE (I0_REGNUM);
else
regoffset = REGISTER_BYTE (regno) - REGISTER_BYTE (I0_REGNUM);
target_xfer_memory (sp + regoffset, &registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno), 1);
}
}
if (whatregs & WHATREGS_FLOAT)
{
struct fcontext fc; /* fp regs */
int retval;
/* We read fcontext first so that we can get good values for fq_t... */
errno = 0;
retval = ptrace (PTRACE_GETFPREGS, inferior_pid, (PTRACE_ARG3_TYPE) &fc,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
memcpy (fc.f.fregs, &registers[REGISTER_BYTE (FP0_REGNUM)],
32 * REGISTER_RAW_SIZE (FP0_REGNUM));
fc.fsr = read_register (FPS_REGNUM);
errno = 0;
retval = ptrace (PTRACE_SETFPREGS, inferior_pid, (PTRACE_ARG3_TYPE) &fc,
0);
if (errno)
perror_with_name ("Sparc fetch_inferior_registers(ptrace)");
}
}
#endif
#ifndef SPARC
/* Return the offset relative to the start of the per-thread data to the
saved context block. */
@ -142,7 +424,7 @@ fetch_inferior_registers (regno)
ecp = registers_addr (inferior_pid);
for (regno = reglo; regno <= reghi; regno++)
for (regno = reglo; regno <= reghi && regmap[regno] != -1; regno++)
{
char buf[MAX_REGISTER_RAW_SIZE];
int ptrace_fun = PTRACE_PEEKTHREAD;
@ -189,7 +471,7 @@ store_inferior_registers (regno)
ecp = registers_addr (inferior_pid);
for (regno = reglo; regno <= reghi; regno++)
for (regno = reglo; regno <= reghi && regmap[regno] != -1; regno++)
{
int ptrace_fun = PTRACE_POKEUSER;
@ -211,6 +493,7 @@ store_inferior_registers (regno)
}
}
}
#endif /* ifndef SPARC */
/* Wait for child to do something. Return pid of child, or -1 in case
of error; store status through argument pointer OURSTATUS. */
@ -231,7 +514,12 @@ child_wait (pid, ourstatus)
if (attach_flag)
set_sigint_trap(); /* Causes SIGINT to be passed on to the
attached process. */
pid = wait (status);
pid = wait (&status);
#ifdef SPARC
/* Swap halves of status so that the rest of GDB can understand it */
status = (status << 16) | ((unsigned)status >> 16);
#endif
save_errno = errno;
if (attach_flag)

370
gdb/sparcly-nat.c
View File

@ -1,370 +0,0 @@
/* Native-dependent code for Sparc running LynxOS.
Copyright (C) 1989, 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 "inferior.h"
#include "target.h"
#include <signal.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#if 0
#include <machine/reg.h>
#endif
/* 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
/* 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;
{
#if 0
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");
registers[REGISTER_BYTE (0)] = 0;
memcpy (&registers[REGISTER_BYTE (1)], &inferior_registers.r_g1,
15 * REGISTER_RAW_SIZE (G0_REGNUM));
*(int *)&registers[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
*(int *)&registers[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
*(int *)&registers[REGISTER_BYTE (NPC_REGNUM)] = inferior_registers.r_npc;
*(int *)&registers[REGISTER_BYTE (Y_REGNUM)] = inferior_registers.r_y;
for (i = G0_REGNUM; i <= O7_REGNUM; i++)
register_valid[i] = 1;
register_valid[Y_REGNUM] = 1;
register_valid[PS_REGNUM] = 1;
register_valid[PC_REGNUM] = 1;
register_valid[NPC_REGNUM] = 1;
/* 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[FPS_REGNUM] = 1; /* Not true yet, FIXME */
register_valid[CPS_REGNUM] = 1; /* Not true yet, FIXME */
}
/* Floating point registers */
if (regno == -1 || (regno >= FP0_REGNUM && regno <= FP0_REGNUM + 31))
{
if (0 != ptrace (PTRACE_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_fp_registers,
0))
perror("ptrace_getfpregs");
memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
sizeof inferior_fp_registers.fpu_fr);
/* memcpy (&registers[REGISTER_BYTE (FPS_REGNUM)],
&inferior_fp_registers.Fpu_fsr,
sizeof (FPU_FSR_TYPE)); FIXME??? -- gnu@cyg */
for (i = FP0_REGNUM; i <= FP0_REGNUM+31; i++)
register_valid[i] = 1;
register_valid[FPS_REGNUM] = 1;
}
/* These regs are saved on the stack by the kernel. Only read them
all (16 ptrace calls!) if we really need them. */
if (regno == -1)
{
target_xfer_memory (*(CORE_ADDR*)&registers[REGISTER_BYTE (SP_REGNUM)],
&registers[REGISTER_BYTE (L0_REGNUM)],
16*REGISTER_RAW_SIZE (L0_REGNUM), 0);
for (i = L0_REGNUM; i <= I7_REGNUM; i++)
register_valid[i] = 1;
}
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
{
CORE_ADDR sp = *(CORE_ADDR*)&registers[REGISTER_BYTE (SP_REGNUM)];
i = REGISTER_BYTE (regno);
if (register_valid[regno])
printf("register %d valid and read\n", regno);
target_xfer_memory (sp + i - REGISTER_BYTE (L0_REGNUM),
&registers[i], REGISTER_RAW_SIZE (regno), 0);
register_valid[regno] = 1;
}
#endif
}
/* 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;
{
#if 0
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
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_xfer_memory (sp,
&registers[REGISTER_BYTE (L0_REGNUM)],
16*REGISTER_RAW_SIZE (L0_REGNUM), 1);
}
else
{
if (!register_valid[regno]) abort();
target_xfer_memory (sp + REGISTER_BYTE (regno) - REGISTER_BYTE (L0_REGNUM),
&registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno), 1);
}
}
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();
/* Initialize inferior_fp_registers members that gdb doesn't set
by reading them from the inferior. */
if (0 !=
ptrace (PTRACE_GETFPREGS, inferior_pid,
(PTRACE_ARG3_TYPE) &inferior_fp_registers, 0))
perror("ptrace_getfpregs");
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");
}
#endif
}
void
fetch_core_registers (core_reg_sect, core_reg_size, which, ignore)
char *core_reg_sect;
unsigned core_reg_size;
int which;
unsigned int ignore; /* reg addr, unused in this version */
{
#if 0
if (which == 0) {
/* Integer registers */
#define gregs ((struct regs *)core_reg_sect)
/* G0 *always* holds 0. */
*(int *)&registers[REGISTER_BYTE (0)] = 0;
/* The globals and output registers. */
memcpy (&registers[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1,
15 * REGISTER_RAW_SIZE (G1_REGNUM));
*(int *)&registers[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps;
*(int *)&registers[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc;
*(int *)&registers[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc;
*(int *)&registers[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y;
/* My best guess at where to get the locals and input
registers is exactly where they usually are, right above
the stack pointer. If the core dump was caused by a bus error
from blowing away the stack pointer (as is possible) then this
won't work, but it's worth the try. */
{
int sp;
sp = *(int *)&registers[REGISTER_BYTE (SP_REGNUM)];
if (0 != target_read_memory (sp, &registers[REGISTER_BYTE (L0_REGNUM)],
16 * REGISTER_RAW_SIZE (L0_REGNUM)))
{
/* fprintf so user can still use gdb */
fprintf (stderr,
"Couldn't read input and local registers from core file\n");
}
}
} else if (which == 2) {
/* Floating point registers */
#define fpuregs ((struct fpu *) core_reg_sect)
if (core_reg_size >= sizeof (struct fpu))
{
memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], fpuregs->fpu_regs,
sizeof (fpuregs->fpu_regs));
memcpy (&registers[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr,
sizeof (FPU_FSR_TYPE));
}
else
fprintf (stderr, "Couldn't read float regs from core file\n");
}
#endif
}
/* Wait for child to do something. Return pid of child, or -1 in case
of error; store status through argument pointer STATUS. */
/* FIXME: Not sparc-specific. Should be using lynx-nat.c instead; the
child_wait's are identical. */
int
child_wait (pid, status)
int pid;
struct target_waitstatus *ourstatus;
{
int save_errno;
int thread;
while (1)
{
int sig;
if (attach_flag)
set_sigint_trap(); /* Causes SIGINT to be passed on to the
attached process. */
pid = wait (status);
save_errno = errno;
if (attach_flag)
clear_sigint_trap();
if (pid == -1)
{
if (save_errno == EINTR)
continue;
fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n",
safe_strerror (save_errno));
/* Claim it exited with unknown signal. */
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
return -1;
}
if (pid != PIDGET (inferior_pid)) /* Some other process?!? */
continue;
/* thread = WIFTID (*status);*/
thread = *status >> 16;
/* Initial thread value can only be acquired via wait, so we have to
resort to this hack. */
if (TIDGET (inferior_pid) == 0)
{
inferior_pid = BUILDPID (inferior_pid, thread);
add_thread (inferior_pid);
}
pid = BUILDPID (pid, thread);
store_waitstatus (ourstatus, status);
return pid;
}
}