1993-01-31 06:43:36 +00:00
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/* Machine-dependent hooks for the unix child process stratum, for HPUX PA-RISC.
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1992-10-21 04:57:35 +00:00
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1993-01-31 06:43:36 +00:00
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Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993
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Free Software Foundation, Inc.
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1992-10-21 04:57:35 +00:00
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Contributed by the Center for Software Science at the
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University of Utah (pa-gdb-bugs@cs.utah.edu).
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include "inferior.h"
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1992-12-15 01:45:15 +00:00
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#include "target.h"
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#include <sys/ptrace.h>
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* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
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extern CORE_ADDR text_end;
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1992-10-21 04:57:35 +00:00
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1992-12-15 01:45:15 +00:00
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static void fetch_register ();
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1992-10-21 04:57:35 +00:00
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/* This function simply calls ptrace with the given arguments.
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It exists so that all calls to ptrace are isolated in this
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machine-dependent file. */
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int
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call_ptrace (request, pid, addr, data)
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int request, pid;
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PTRACE_ARG3_TYPE addr;
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int data;
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{
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return ptrace (request, pid, addr, data, 0);
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}
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void
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kill_inferior ()
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{
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if (inferior_pid == 0)
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return;
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1992-12-15 01:45:15 +00:00
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ptrace (PT_EXIT, inferior_pid, (PTRACE_ARG3_TYPE) 0, 0, 0);
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1992-10-21 04:57:35 +00:00
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wait ((int *)0);
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target_mourn_inferior ();
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}
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/* Start debugging the process whose number is PID. */
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int
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attach (pid)
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int pid;
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{
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errno = 0;
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ptrace (PT_ATTACH, pid, (PTRACE_ARG3_TYPE) 0, 0, 0);
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if (errno)
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perror_with_name ("ptrace");
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attach_flag = 1;
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return pid;
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}
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/* Stop debugging the process whose number is PID
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and continue it with signal number SIGNAL.
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SIGNAL = 0 means just continue it. */
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void
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detach (signal)
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int signal;
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{
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errno = 0;
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ptrace (PT_DETACH, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
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if (errno)
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perror_with_name ("ptrace");
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attach_flag = 0;
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}
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/* Fetch all registers, or just one, from the child process. */
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void
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fetch_inferior_registers (regno)
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int regno;
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{
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if (regno == -1)
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for (regno = 0; regno < NUM_REGS; regno++)
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fetch_register (regno);
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else
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fetch_register (regno);
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}
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/* Store our register values back into the inferior.
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If REGNO is -1, do this for all registers.
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Otherwise, REGNO specifies which register (so we can save time). */
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void
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store_inferior_registers (regno)
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int regno;
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{
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register unsigned int regaddr;
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char buf[80];
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extern char registers[];
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register int i;
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unsigned int offset = U_REGS_OFFSET;
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
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int scratch;
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1992-10-21 04:57:35 +00:00
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if (regno >= 0)
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{
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regaddr = register_addr (regno, offset);
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
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errno = 0;
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if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
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{
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scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
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ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
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scratch, 0);
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if (errno != 0)
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{
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sprintf (buf, "writing register number %d(%d)", regno, i);
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perror_with_name (buf);
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}
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}
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else
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for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
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{
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errno = 0;
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ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
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*(int *) ®isters[REGISTER_BYTE (regno) + i], 0);
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if (errno != 0)
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{
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sprintf (buf, "writing register number %d(%d)", regno, i);
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perror_with_name (buf);
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}
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regaddr += sizeof(int);
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}
|
1992-10-21 04:57:35 +00:00
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}
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else
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{
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for (regno = 0; regno < NUM_REGS; regno++)
|
|
|
|
{
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
|
|
|
if (CANNOT_STORE_REGISTER (regno))
|
|
|
|
continue;
|
1992-10-21 04:57:35 +00:00
|
|
|
regaddr = register_addr (regno, offset);
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
|
|
|
errno = 0;
|
|
|
|
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
|
|
|
|
{
|
|
|
|
scratch = *(int *) ®isters[REGISTER_BYTE (regno)] | 0x3;
|
|
|
|
ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
|
|
|
scratch, 0);
|
|
|
|
if (errno != 0)
|
|
|
|
{
|
|
|
|
sprintf (buf, "writing register number %d(%d)", regno, i);
|
|
|
|
perror_with_name (buf);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
|
|
|
|
{
|
|
|
|
errno = 0;
|
|
|
|
ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
|
|
|
|
*(int *) ®isters[REGISTER_BYTE (regno) + i], 0);
|
|
|
|
if (errno != 0)
|
|
|
|
{
|
|
|
|
sprintf (buf, "writing register number %d(%d)", regno, i);
|
|
|
|
perror_with_name (buf);
|
|
|
|
}
|
|
|
|
regaddr += sizeof(int);
|
|
|
|
}
|
1992-10-21 04:57:35 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Fetch one register. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
fetch_register (regno)
|
|
|
|
int regno;
|
|
|
|
{
|
|
|
|
register unsigned int regaddr;
|
|
|
|
char buf[MAX_REGISTER_RAW_SIZE];
|
|
|
|
char mess[128]; /* For messages */
|
|
|
|
register int i;
|
|
|
|
|
|
|
|
/* Offset of registers within the u area. */
|
|
|
|
unsigned int offset;
|
|
|
|
|
|
|
|
offset = U_REGS_OFFSET;
|
|
|
|
|
|
|
|
regaddr = register_addr (regno, offset);
|
|
|
|
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
|
|
|
|
{
|
|
|
|
errno = 0;
|
|
|
|
*(int *) &buf[i] = ptrace (PT_RUREGS, inferior_pid,
|
|
|
|
(PTRACE_ARG3_TYPE) regaddr, 0, 0);
|
|
|
|
regaddr += sizeof (int);
|
|
|
|
if (errno != 0)
|
|
|
|
{
|
|
|
|
sprintf (mess, "reading register %s (#%d)", reg_names[regno], regno);
|
|
|
|
perror_with_name (mess);
|
|
|
|
}
|
|
|
|
}
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
|
|
|
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
|
|
|
|
buf[3] &= ~0x3;
|
1992-10-21 04:57:35 +00:00
|
|
|
supply_register (regno, buf);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Resume execution of the inferior process.
|
|
|
|
If STEP is nonzero, single-step it.
|
|
|
|
If SIGNAL is nonzero, give it that signal. */
|
|
|
|
|
|
|
|
void
|
|
|
|
child_resume (step, signal)
|
|
|
|
int step;
|
|
|
|
int signal;
|
|
|
|
{
|
|
|
|
errno = 0;
|
|
|
|
|
|
|
|
/* An address of (PTRACE_ARG3_TYPE) 1 tells ptrace to continue from where
|
|
|
|
it was. (If GDB wanted it to start some other way, we have already
|
|
|
|
written a new PC value to the child.) */
|
|
|
|
|
|
|
|
if (step)
|
|
|
|
ptrace (PT_SINGLE, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
|
|
|
|
else
|
|
|
|
ptrace (PT_CONTIN, inferior_pid, (PTRACE_ARG3_TYPE) 1, signal, 0);
|
|
|
|
|
|
|
|
if (errno)
|
|
|
|
perror_with_name ("ptrace");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
|
|
|
|
to debugger memory starting at MYADDR. Copy to inferior if
|
|
|
|
WRITE is nonzero.
|
|
|
|
|
|
|
|
Returns the length copied, which is either the LEN argument or zero.
|
|
|
|
This xfer function does not do partial moves, since child_ops
|
|
|
|
doesn't allow memory operations to cross below us in the target stack
|
|
|
|
anyway. */
|
|
|
|
|
|
|
|
int
|
|
|
|
child_xfer_memory (memaddr, myaddr, len, write, target)
|
|
|
|
CORE_ADDR memaddr;
|
|
|
|
char *myaddr;
|
|
|
|
int len;
|
|
|
|
int write;
|
|
|
|
struct target_ops *target; /* ignored */
|
|
|
|
{
|
|
|
|
register int i;
|
|
|
|
/* Round starting address down to longword boundary. */
|
|
|
|
register CORE_ADDR addr = memaddr & - sizeof (int);
|
|
|
|
/* Round ending address up; get number of longwords that makes. */
|
|
|
|
register int count
|
|
|
|
= (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
|
|
|
|
/* Allocate buffer of that many longwords. */
|
|
|
|
register int *buffer = (int *) alloca (count * sizeof (int));
|
|
|
|
|
|
|
|
if (write)
|
|
|
|
{
|
|
|
|
/* Fill start and end extra bytes of buffer with existing memory data. */
|
|
|
|
|
|
|
|
if (addr != memaddr || len < (int)sizeof (int)) {
|
|
|
|
/* Need part of initial word -- fetch it. */
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
|
|
|
buffer[0] = ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
|
|
|
|
inferior_pid, (PTRACE_ARG3_TYPE) addr, 0, 0);
|
1992-10-21 04:57:35 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (count > 1) /* FIXME, avoid if even boundary */
|
|
|
|
{
|
|
|
|
buffer[count - 1]
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
|
|
|
= ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER, inferior_pid,
|
1992-10-21 04:57:35 +00:00
|
|
|
(PTRACE_ARG3_TYPE) (addr + (count - 1) * sizeof (int)),
|
|
|
|
0, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Copy data to be written over corresponding part of buffer */
|
|
|
|
|
|
|
|
bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
|
|
|
|
|
|
|
|
/* Write the entire buffer. */
|
|
|
|
|
|
|
|
for (i = 0; i < count; i++, addr += sizeof (int))
|
|
|
|
{
|
|
|
|
/* The HP-UX kernel crashes if you use PT_WDUSER to write into the text
|
|
|
|
segment. FIXME -- does it work to write into the data segment using
|
|
|
|
WIUSER, or do these idiots really expect us to figure out which segment
|
|
|
|
the address is in, so we can use a separate system call for it??! */
|
|
|
|
errno = 0;
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
|
|
|
ptrace (addr < text_end ? PT_WIUSER : PT_WDUSER, inferior_pid,
|
|
|
|
(PTRACE_ARG3_TYPE) addr,
|
1992-10-21 04:57:35 +00:00
|
|
|
buffer[i], 0);
|
|
|
|
if (errno)
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* Read all the longwords */
|
|
|
|
for (i = 0; i < count; i++, addr += sizeof (int))
|
|
|
|
{
|
|
|
|
errno = 0;
|
* hppa-pinsn.c (print_insn): Improve handling of be and ble
branch targets to compute target address using const from previous
instruction if necessary.
* Add `Q' operator to print out bit position field various
instructions.
* hppah-nat.c: #include sys/param.h, and sys/user.h. General
cleanups, use new code from Utah.
* (store_inferior_registers): Update to new code from Utah.
* (initialize_kernel_u_addr): Re-enable decl of struct user u.
* (fetch_register): Clear out priv level when reading PCs.
* hppah-tdep.c: Get rid of gobs of KERNELDEBUG stuff.
* Remove decl of errno, #include wait.h and target.h.
* (frame_saved_pc): Check `flags' pseudo-register to see if we
were inside of a kernel call. If so, then PC is in a different
register. Also, mask out bottom two bits of all PCs so as not to
confuse higher level code.
* (push_dummy_frame): Create from #define in tm-hppa.h.
* (find_dummy_frame_regs): Update from Utah.
* (hp_pop_frame): Create from #define in tm-hppa.h.
* (hp_restore_pc_queue): New, from Utah.
* (hp_push_arguments): Big fixes from Utah.
* (pa_do_registers_info, pa_print_registers): Only print out fp
regs upon request.
* (skip_trampoline_code): New routine to deal with stubs that
live in nowhereland between callers and callees.
* i860-tdep.c: Remove decl of attach_flag.
* infrun.c (wait_for_inferior): Add new macro
INSTRUCTION_NULLIFIED, which can tell if the instruction pointed
at by PC will be nullified. If so, then step the target once more
so as to avoid confusing the user.
* (just before step_over_function:): Use stop_func_start, not
stop_pc when checking for the existance of line number info.
stop_func_start will reflect the proper address of the target
routine, not of the stub that we may be traversing to get there.
* tm-hppa.h: define SKIP_TRAMPOLINE_CODE and IN_SOLIB_TRAMPOLINE
to deal with the stubs that PA compilers sometimes stick between
callers and callees. Also, define FLAGS_REGNUM for access to the
`flags' pseudo-reg.
* (REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use
memcpy, not bcopy.
* (CANNOT_STORE_REGISTER): New from Utah. Says that we can't
write gr0, PC regs, and PSW!
* (FRAME_FIND_SAVED_REGS): Bug fixes from Utah.
* (PUSH_DUMMY_FRAME, POP_FRAME): Make into real routines in
hppah-nat.c.
* (CALL_DUMMY, FIX_CALL_DUMMY): Fixes from Utah.
* Define struct unwind_table_entry.
* valops.c (call_function_by_hand): Add another arg to
FIX_CALL_DUMMY (under #ifdef GDB_TARGET_IS_HPPA). Why is this
necessary?
1992-12-22 03:18:46 +00:00
|
|
|
buffer[i] = ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
|
|
|
|
inferior_pid, (PTRACE_ARG3_TYPE) addr, 0, 0);
|
1992-10-21 04:57:35 +00:00
|
|
|
if (errno)
|
|
|
|
return 0;
|
|
|
|
QUIT;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Copy appropriate bytes out of the buffer. */
|
|
|
|
bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
|
|
|
|
}
|
|
|
|
return len;
|
|
|
|
}
|