1992-10-16 11:47:34 +01:00
|
|
|
/* Low level DECstation interface to ptrace, for GDB when running native.
|
* alpha-nat.c, irix4-nat.c, irix5-nat.c, mipsv4-nat.c,
sparc-tdep.c (supply_gregset, supply_fpregset): Fill inaccessible
registers with zero to handle recent read_register_bytes change.
* irix4-nat.c, irix5-nat.c, mipsv4-nat.c (supply_gregset,
fill_gregset): Fix handling of CAUSE_REGNUM.
* mips-nat.c (store_inferior_registers): Handle unwritable
registers when storing a single register.
* config/mips/tm-irix3.h (CAUSE_REGNUM, BADVADDR_REGNUM):
Fix definitions.
* mdebugread.c (parse_symbol, psymtab_to_symtab_1): Clear
allocated mips_extra_func_info, if the debug info is corrupt,
the PDR to fill it in might be missing.
1995-03-28 08:57:39 +02:00
|
|
|
Copyright 1988, 1989, 1991, 1992, 1995 Free Software Foundation, Inc.
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 08:59:37 +01:00
|
|
|
Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
|
|
|
|
and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
|
|
|
|
|
|
|
|
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 "gdbcore.h"
|
1992-10-16 11:47:34 +01:00
|
|
|
#include <sys/ptrace.h>
|
1992-10-20 06:47:47 +01:00
|
|
|
#include <sys/types.h>
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/user.h>
|
1992-10-20 08:03:38 +01:00
|
|
|
#undef JB_S0
|
|
|
|
#undef JB_S1
|
|
|
|
#undef JB_S2
|
|
|
|
#undef JB_S3
|
|
|
|
#undef JB_S4
|
|
|
|
#undef JB_S5
|
|
|
|
#undef JB_S6
|
|
|
|
#undef JB_S7
|
|
|
|
#undef JB_SP
|
|
|
|
#undef JB_S8
|
|
|
|
#undef JB_PC
|
|
|
|
#undef JB_SR
|
|
|
|
#undef NJBREGS
|
|
|
|
#include <setjmp.h> /* For JB_XXX. */
|
1992-10-20 06:47:47 +01:00
|
|
|
|
1992-10-16 11:47:34 +01:00
|
|
|
/* Size of elements in jmpbuf */
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 08:59:37 +01:00
|
|
|
|
1992-10-16 11:47:34 +01:00
|
|
|
#define JB_ELEMENT_SIZE 4
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 08:59:37 +01:00
|
|
|
|
|
|
|
/* Map gdb internal register number to ptrace ``address''.
|
|
|
|
These ``addresses'' are defined in DECstation <sys/ptrace.h> */
|
|
|
|
|
|
|
|
#define REGISTER_PTRACE_ADDR(regno) \
|
|
|
|
(regno < 32 ? GPR_BASE + regno \
|
|
|
|
: regno == PC_REGNUM ? PC \
|
|
|
|
: regno == CAUSE_REGNUM ? CAUSE \
|
|
|
|
: regno == HI_REGNUM ? MMHI \
|
|
|
|
: regno == LO_REGNUM ? MMLO \
|
|
|
|
: regno == FCRCS_REGNUM ? FPC_CSR \
|
|
|
|
: regno == FCRIR_REGNUM ? FPC_EIR \
|
|
|
|
: regno >= FP0_REGNUM ? FPR_BASE + (regno - FP0_REGNUM) \
|
|
|
|
: 0)
|
|
|
|
|
1992-10-22 03:26:04 +01:00
|
|
|
static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0};
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 08:59:37 +01:00
|
|
|
|
|
|
|
/* Get all registers from the inferior */
|
|
|
|
|
|
|
|
void
|
|
|
|
fetch_inferior_registers (regno)
|
|
|
|
int regno;
|
|
|
|
{
|
|
|
|
register unsigned int regaddr;
|
|
|
|
char buf[MAX_REGISTER_RAW_SIZE];
|
|
|
|
register int i;
|
|
|
|
|
|
|
|
registers_fetched ();
|
|
|
|
|
|
|
|
for (regno = 1; regno < NUM_REGS; regno++)
|
|
|
|
{
|
|
|
|
regaddr = REGISTER_PTRACE_ADDR (regno);
|
|
|
|
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
|
|
|
|
{
|
|
|
|
*(int *) &buf[i] = ptrace (PT_READ_U, inferior_pid,
|
|
|
|
(PTRACE_ARG3_TYPE) regaddr, 0);
|
|
|
|
regaddr += sizeof (int);
|
|
|
|
}
|
|
|
|
supply_register (regno, buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
supply_register (ZERO_REGNUM, zerobuf);
|
|
|
|
/* Frame ptr reg must appear to be 0; it is faked by stack handling code. */
|
|
|
|
supply_register (FP_REGNUM, zerobuf);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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;
|
|
|
|
{
|
|
|
|
register unsigned int regaddr;
|
|
|
|
char buf[80];
|
|
|
|
|
|
|
|
if (regno > 0)
|
|
|
|
{
|
* alpha-nat.c, irix4-nat.c, irix5-nat.c, mipsv4-nat.c,
sparc-tdep.c (supply_gregset, supply_fpregset): Fill inaccessible
registers with zero to handle recent read_register_bytes change.
* irix4-nat.c, irix5-nat.c, mipsv4-nat.c (supply_gregset,
fill_gregset): Fix handling of CAUSE_REGNUM.
* mips-nat.c (store_inferior_registers): Handle unwritable
registers when storing a single register.
* config/mips/tm-irix3.h (CAUSE_REGNUM, BADVADDR_REGNUM):
Fix definitions.
* mdebugread.c (parse_symbol, psymtab_to_symtab_1): Clear
allocated mips_extra_func_info, if the debug info is corrupt,
the PDR to fill it in might be missing.
1995-03-28 08:57:39 +02:00
|
|
|
if (regno == ZERO_REGNUM || regno == PS_REGNUM
|
|
|
|
|| regno == BADVADDR_REGNUM || regno == CAUSE_REGNUM
|
|
|
|
|| regno == FCRIR_REGNUM || regno == FP_REGNUM
|
|
|
|
|| (regno >= FIRST_EMBED_REGNUM && regno <= LAST_EMBED_REGNUM))
|
|
|
|
return;
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 08:59:37 +01:00
|
|
|
regaddr = REGISTER_PTRACE_ADDR (regno);
|
|
|
|
errno = 0;
|
|
|
|
ptrace (PT_WRITE_U, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
|
|
|
read_register (regno));
|
|
|
|
if (errno != 0)
|
|
|
|
{
|
|
|
|
sprintf (buf, "writing register number %d", regno);
|
|
|
|
perror_with_name (buf);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
for (regno = 0; regno < NUM_REGS; regno++)
|
* alpha-nat.c, irix4-nat.c, irix5-nat.c, mipsv4-nat.c,
sparc-tdep.c (supply_gregset, supply_fpregset): Fill inaccessible
registers with zero to handle recent read_register_bytes change.
* irix4-nat.c, irix5-nat.c, mipsv4-nat.c (supply_gregset,
fill_gregset): Fix handling of CAUSE_REGNUM.
* mips-nat.c (store_inferior_registers): Handle unwritable
registers when storing a single register.
* config/mips/tm-irix3.h (CAUSE_REGNUM, BADVADDR_REGNUM):
Fix definitions.
* mdebugread.c (parse_symbol, psymtab_to_symtab_1): Clear
allocated mips_extra_func_info, if the debug info is corrupt,
the PDR to fill it in might be missing.
1995-03-28 08:57:39 +02:00
|
|
|
store_inferior_registers (regno);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 08:59:37 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
1992-10-16 11:47:34 +01:00
|
|
|
/* Figure out where the longjmp will land.
|
|
|
|
We expect the first arg to be a pointer to the jmp_buf structure from which
|
|
|
|
we extract the pc (JB_PC) that we will land at. The pc is copied into PC.
|
|
|
|
This routine returns true on success. */
|
|
|
|
|
|
|
|
int
|
|
|
|
get_longjmp_target(pc)
|
|
|
|
CORE_ADDR *pc;
|
|
|
|
{
|
|
|
|
CORE_ADDR jb_addr;
|
1993-07-10 03:35:53 +02:00
|
|
|
char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
|
1992-10-16 11:47:34 +01:00
|
|
|
|
1993-07-10 03:35:53 +02:00
|
|
|
jb_addr = read_register (A0_REGNUM);
|
Mips native support. Decstation and iris4 have been tested.
Iris3 has not.
* mips-tdep.c (supply_gregset, fill_gregset, supply_fpregset,
fill_fpregset): removed to irix4-nat.c
* mips-xdep.c: removed.
* irix4-nat.c, mips-nat.c, nm-irix3.h, nm-irix4.h, nm-mips.h: new
files.
* procfs.c: include nm.h.
* xm-irix3.h (U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS): removed.
* xm-irix4.h: bump copyright.
(U_REGS_OFFSET, FETCH_INFERIOR_REGISTERS, USE_PROC_FS,
PROC_NAME_FMT): removed.
* xm-mips.h (FETCH_INFERIOR_REGISTERS): removed.
* config/irix4.mh (XDEPFILES): removed procfs.o fork-child.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
(CC): supply default compiler switches.
* config/irix3.mh (XDEPFILES): removed infptrace.o inftarg.o fork-child.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support. Note that
irix3 is untested.
* config/decstation.mh (XDEPFILES): removed infptrace.o inftarg.o
fork-child.o mips-xdep.o coredep.o.
(NAT_FILE, NATDEPFILES): new macros for native support.
1992-10-09 08:59:37 +01:00
|
|
|
|
1993-07-10 03:35:53 +02:00
|
|
|
if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
|
|
|
|
TARGET_PTR_BIT / TARGET_CHAR_BIT))
|
1992-10-16 11:47:34 +01:00
|
|
|
return 0;
|
|
|
|
|
1993-07-10 03:35:53 +02:00
|
|
|
*pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
|
1992-10-16 11:47:34 +01:00
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
1992-10-20 06:47:47 +01:00
|
|
|
|
|
|
|
/* Extract the register values out of the core file and store
|
|
|
|
them where `read_register' will find them.
|
|
|
|
|
|
|
|
CORE_REG_SECT points to the register values themselves, read into memory.
|
|
|
|
CORE_REG_SIZE is the size of that area.
|
|
|
|
WHICH says which set of registers we are handling (0 = int, 2 = float
|
|
|
|
on machines where they are discontiguous).
|
|
|
|
REG_ADDR is the offset from u.u_ar0 to the register values relative to
|
|
|
|
core_reg_sect. This is used with old-fashioned core files to
|
|
|
|
locate the registers in a large upage-plus-stack ".reg" section.
|
|
|
|
Original upage address X is at location core_reg_sect+x+reg_addr.
|
|
|
|
*/
|
|
|
|
|
|
|
|
void
|
|
|
|
fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
|
|
|
|
char *core_reg_sect;
|
|
|
|
unsigned core_reg_size;
|
|
|
|
int which;
|
|
|
|
unsigned reg_addr;
|
|
|
|
{
|
|
|
|
register int regno;
|
|
|
|
register unsigned int addr;
|
|
|
|
int bad_reg = -1;
|
|
|
|
register reg_ptr = -reg_addr; /* Original u.u_ar0 is -reg_addr. */
|
|
|
|
|
|
|
|
/* If u.u_ar0 was an absolute address in the core file, relativize it now,
|
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|
|
so we can use it as an offset into core_reg_sect. When we're done,
|
|
|
|
"register 0" will be at core_reg_sect+reg_ptr, and we can use
|
|
|
|
register_addr to offset to the other registers. If this is a modern
|
|
|
|
core file without a upage, reg_ptr will be zero and this is all a big
|
|
|
|
NOP. */
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|
|
|
if (reg_ptr > core_reg_size)
|
1993-07-01 23:07:02 +02:00
|
|
|
#ifdef KERNEL_U_ADDR
|
1992-10-20 06:47:47 +01:00
|
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|
reg_ptr -= KERNEL_U_ADDR;
|
1993-07-01 23:07:02 +02:00
|
|
|
#else
|
|
|
|
error ("Old mips core file can't be processed on this machine.");
|
|
|
|
#endif
|
1992-10-20 06:47:47 +01:00
|
|
|
|
|
|
|
for (regno = 0; regno < NUM_REGS; regno++)
|
|
|
|
{
|
|
|
|
addr = register_addr (regno, reg_ptr);
|
|
|
|
if (addr >= core_reg_size) {
|
|
|
|
if (bad_reg < 0)
|
|
|
|
bad_reg = regno;
|
|
|
|
} else {
|
|
|
|
supply_register (regno, core_reg_sect + addr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (bad_reg >= 0)
|
|
|
|
{
|
|
|
|
error ("Register %s not found in core file.", reg_names[bad_reg]);
|
|
|
|
}
|
|
|
|
supply_register (ZERO_REGNUM, zerobuf);
|
|
|
|
/* Frame ptr reg must appear to be 0; it is faked by stack handling code. */
|
|
|
|
supply_register (FP_REGNUM, zerobuf);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Return the address in the core dump or inferior of register REGNO.
|
|
|
|
BLOCKEND is the address of the end of the user structure. */
|
|
|
|
|
|
|
|
unsigned int
|
|
|
|
register_addr (regno, blockend)
|
|
|
|
int regno;
|
|
|
|
int blockend;
|
|
|
|
{
|
|
|
|
int addr;
|
|
|
|
|
|
|
|
if (regno < 0 || regno >= NUM_REGS)
|
|
|
|
error ("Invalid register number %d.", regno);
|
|
|
|
|
|
|
|
REGISTER_U_ADDR (addr, blockend, regno);
|
|
|
|
|
|
|
|
return addr;
|
|
|
|
}
|