binutils-gdb/gdb/hppah-nat.c

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/* Machine-dependent hooks for the unix child process stratum, for HPUX PA-RISC.
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Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993
Free Software Foundation, Inc.
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Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
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
1995-08-02 05:41:12 +02:00
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
#include "inferior.h"
#include "target.h"
#include <sys/ptrace.h>
* configure.in: Add test for "long long" support. * configure: Regenerate with autoconf. * acconfig.h: Add CC_HAS_LONG_LONG * config.in: Regenerate with autoheader. * config/mips/tm-mips64.h (FORCE_LONG_LONG): Remove * config/sparc/tm-sp64.h (CC_HAS_LONG_LONG): Remove. * config/mips/tm-vr4300el.h (CC_HAS_LONG_LONG): Remove. * config/mips/tm-vr4300.h (CC_HAS_LONG_LONG): Remove. * config/mips/xm-irix5.h (CC_HAS_LONG_LONG): Remove (PRINTF_HAS_LONG_LONG): Remove. (FORCE_LONG_LONG): Remove. * config/powerpc/xm-aix.h (UINT_MAX): Undef and use gdb's version. * config/convex/xm-convex.h (CC_HAS_LONG_LONG): Remove (PRINTF_HAS_LONG_LONG): Remove. * config/xm-nbsd.h (CC_HAS_LONG_LONG): Remove. (PRINTF_HAS_LONG_LONG): Remove. * config/pa/tm-hppa.h (GET_FIELD): Put parens around subtraction inside shift. Put parens around subtraction in operand of bitwise and. (struct frame_info): Forward declare if __STDC__ defined. (frame_saved_regs): Ditto. (struct value): Ditto. (struct type): Ditto. (struct inferior_status): Ditto. (init_extra_frame_info): Add prototype. (skip_prologue): Ditto. (frameless_function_invocation): Ditto. (frame_chain): Ditto. (frame_chain_valid): Ditto. (saved_pc_after_call): Ditto. (hppa_fix_call_dummy): Ditto. (hppa_push_arguments): Ditto. (pa_do_registers_info): Ditto. (in_solib_call_trampoline): Ditto. (in_solib_return_trampoline): Ditto. (push_dummy_frame): Ditto. * convex-tdep.c (decout): Use print_longest rather than fprintf_filtered. * defs.h: Remove use of FORCE_LONG_LONG and __GNUC__ to set CC_HAS_LONG_LONG. (INT_MIN): Fix so it works correctly when assigned to a long long. * valprint.c (longest_to_int): Rewrite to remove dependence on INT_MIN and INT_MAX. (print_longest): Rewrite the code that falls back to synthesized hex output when LONGEST value is not representable as in a long and printf doesn't support printing long longs. * ch-valprint.c (chill_val_print): Cast 2nd arg of chill_print_type_scalar to LONGEST. chill_print_type_scalar): Make static and add prototype. * hppa-tdep.c (get_field): Ifdef out unused function. (set_field): Ditto. (extract_3): Ditto. (extract_5_store): Ditto. (extract_11): Ditto. (extract_12): Ditto. (deposit_17): Ditto. (extract_14): Convert to static and add prototype. (deposit_14): Ditto. (extract_21): Ditto. (deposit_21): Ditto. (extract_17): Ditto. (extract_5r_store): Ditto. (extract_5R_store): Ditto. (extract_5_load): Ditto. (find_proc_framesize): Ditto. (find_dummy_frame_regs): Ditto. (sign_extend): Ditto. (find_unwind_entry): Add prototype. (find_return_regnum): Ditto. (unwind_command): Ditto. (find_dummy_frame_regs): Add parens around subtraction in operand of bitwise-and. (skip_prologue): Add parens around operands of logical-and inside operand of logical-or. (sign_extend): Add parens around operands of subtraction inside operand of shift. (low_sign_extend): Ditto. * top.c (filename_completer): Convert old style decl of filename_completion_function into prototype. * f-lang.c (patch_common_entries): Ifdef out unused function. * stabsread.c (read_cfront_baseclasses): Remove unused local variable "msg_noterm". (resolve_cfront_continuation): Remove unused local variable "fip". (read_type): Remove unused variable xtypenums. (read_cfront_static_fields): Remove unused variable "i". (read_cfront_static_fields): Remove unused variable "nfields". (read_cfront_member_functions): Add missing comment terminator. (read_cfront_static_fields): Return 1 rather than random value. (read_cfront_baseclasses): Ditto. (read_cfront_baseclasses): Ditto. (read_cfront_baseclasses): Ditto. * somsolib.c (som_solib_create_inferior_hook): Remove unused variable "u". (som_solib_create_inferior_hook): Remove unused variable shadow_contents. (language.h): Add for needed prototypes. (som_solib_sharedlibrary_command): Add prototype. * hpread.c: (hpread_read_array_type): Add prototype. * somread.c (hpread_build_pysmtabs): Add prototype. (hpread_symfile_finish): Ditto. (hpread_symfile_init): Ditto. * hppah-nat.c (fetch_register): Convert old style decl to prototype. (gdbcore.h): Include for needed prototypes. (fetch_register): Remove unused variable "mess". * remote-pa.c (get_offsets): Ifdef out unused function. (remote_start_remote): Remove unused variable "timeout". (boot_board): Add prototype. (reaad_frame): Add prototype. (getpkt): Remove unused variable "bp". (remote_kill): Add prototype. (remote_mourn): Add prototype. (remote_insert_breakpoint): Add prototype. (remote_remove_breakpoint): Add prototype. * valops.c (value_push): Only use if PUSH_ARGUMENTS is not defined. * infcmd.c (do_registers_info): Only need prototype if DO_REGISTERS_INFO is not defined. (breakpoint_auto_delete_contents): Only need if CALL_DUMMY_BREAKPOINT_OFFSET is defined.
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#include "gdbcore.h"
* 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?
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extern CORE_ADDR text_end;
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* configure.in: Add test for "long long" support. * configure: Regenerate with autoconf. * acconfig.h: Add CC_HAS_LONG_LONG * config.in: Regenerate with autoheader. * config/mips/tm-mips64.h (FORCE_LONG_LONG): Remove * config/sparc/tm-sp64.h (CC_HAS_LONG_LONG): Remove. * config/mips/tm-vr4300el.h (CC_HAS_LONG_LONG): Remove. * config/mips/tm-vr4300.h (CC_HAS_LONG_LONG): Remove. * config/mips/xm-irix5.h (CC_HAS_LONG_LONG): Remove (PRINTF_HAS_LONG_LONG): Remove. (FORCE_LONG_LONG): Remove. * config/powerpc/xm-aix.h (UINT_MAX): Undef and use gdb's version. * config/convex/xm-convex.h (CC_HAS_LONG_LONG): Remove (PRINTF_HAS_LONG_LONG): Remove. * config/xm-nbsd.h (CC_HAS_LONG_LONG): Remove. (PRINTF_HAS_LONG_LONG): Remove. * config/pa/tm-hppa.h (GET_FIELD): Put parens around subtraction inside shift. Put parens around subtraction in operand of bitwise and. (struct frame_info): Forward declare if __STDC__ defined. (frame_saved_regs): Ditto. (struct value): Ditto. (struct type): Ditto. (struct inferior_status): Ditto. (init_extra_frame_info): Add prototype. (skip_prologue): Ditto. (frameless_function_invocation): Ditto. (frame_chain): Ditto. (frame_chain_valid): Ditto. (saved_pc_after_call): Ditto. (hppa_fix_call_dummy): Ditto. (hppa_push_arguments): Ditto. (pa_do_registers_info): Ditto. (in_solib_call_trampoline): Ditto. (in_solib_return_trampoline): Ditto. (push_dummy_frame): Ditto. * convex-tdep.c (decout): Use print_longest rather than fprintf_filtered. * defs.h: Remove use of FORCE_LONG_LONG and __GNUC__ to set CC_HAS_LONG_LONG. (INT_MIN): Fix so it works correctly when assigned to a long long. * valprint.c (longest_to_int): Rewrite to remove dependence on INT_MIN and INT_MAX. (print_longest): Rewrite the code that falls back to synthesized hex output when LONGEST value is not representable as in a long and printf doesn't support printing long longs. * ch-valprint.c (chill_val_print): Cast 2nd arg of chill_print_type_scalar to LONGEST. chill_print_type_scalar): Make static and add prototype. * hppa-tdep.c (get_field): Ifdef out unused function. (set_field): Ditto. (extract_3): Ditto. (extract_5_store): Ditto. (extract_11): Ditto. (extract_12): Ditto. (deposit_17): Ditto. (extract_14): Convert to static and add prototype. (deposit_14): Ditto. (extract_21): Ditto. (deposit_21): Ditto. (extract_17): Ditto. (extract_5r_store): Ditto. (extract_5R_store): Ditto. (extract_5_load): Ditto. (find_proc_framesize): Ditto. (find_dummy_frame_regs): Ditto. (sign_extend): Ditto. (find_unwind_entry): Add prototype. (find_return_regnum): Ditto. (unwind_command): Ditto. (find_dummy_frame_regs): Add parens around subtraction in operand of bitwise-and. (skip_prologue): Add parens around operands of logical-and inside operand of logical-or. (sign_extend): Add parens around operands of subtraction inside operand of shift. (low_sign_extend): Ditto. * top.c (filename_completer): Convert old style decl of filename_completion_function into prototype. * f-lang.c (patch_common_entries): Ifdef out unused function. * stabsread.c (read_cfront_baseclasses): Remove unused local variable "msg_noterm". (resolve_cfront_continuation): Remove unused local variable "fip". (read_type): Remove unused variable xtypenums. (read_cfront_static_fields): Remove unused variable "i". (read_cfront_static_fields): Remove unused variable "nfields". (read_cfront_member_functions): Add missing comment terminator. (read_cfront_static_fields): Return 1 rather than random value. (read_cfront_baseclasses): Ditto. (read_cfront_baseclasses): Ditto. (read_cfront_baseclasses): Ditto. * somsolib.c (som_solib_create_inferior_hook): Remove unused variable "u". (som_solib_create_inferior_hook): Remove unused variable shadow_contents. (language.h): Add for needed prototypes. (som_solib_sharedlibrary_command): Add prototype. * hpread.c: (hpread_read_array_type): Add prototype. * somread.c (hpread_build_pysmtabs): Add prototype. (hpread_symfile_finish): Ditto. (hpread_symfile_init): Ditto. * hppah-nat.c (fetch_register): Convert old style decl to prototype. (gdbcore.h): Include for needed prototypes. (fetch_register): Remove unused variable "mess". * remote-pa.c (get_offsets): Ifdef out unused function. (remote_start_remote): Remove unused variable "timeout". (boot_board): Add prototype. (reaad_frame): Add prototype. (getpkt): Remove unused variable "bp". (remote_kill): Add prototype. (remote_mourn): Add prototype. (remote_insert_breakpoint): Add prototype. (remote_remove_breakpoint): Add prototype. * valops.c (value_push): Only use if PUSH_ARGUMENTS is not defined. * infcmd.c (do_registers_info): Only need prototype if DO_REGISTERS_INFO is not defined. (breakpoint_auto_delete_contents): Only need if CALL_DUMMY_BREAKPOINT_OFFSET is defined.
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static void fetch_register PARAMS ((int));
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void
fetch_inferior_registers (regno)
int regno;
{
if (regno == -1)
for (regno = 0; regno < NUM_REGS; regno++)
fetch_register (regno);
else
fetch_register (regno);
}
/* 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];
extern char registers[];
register int i;
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?
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int scratch;
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if (regno >= 0)
{
if (CANNOT_STORE_REGISTER (regno))
return;
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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?
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errno = 0;
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
{
scratch = *(int *) &registers[REGISTER_BYTE (regno)] | 0x3;
call_ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
scratch);
* 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?
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if (errno != 0)
{
/* Error, even if attached. Failing to write these two
registers is pretty serious. */
sprintf (buf, "writing register number %d", 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?
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perror_with_name (buf);
}
}
else
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof(int))
{
errno = 0;
call_ptrace (PT_WUREGS, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
*(int *) &registers[REGISTER_BYTE (regno) + i]);
* 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 04:18:46 +01:00
if (errno != 0)
{
/* Warning, not error, in case we are attached; sometimes the
kernel doesn't let us at the registers. */
char *err = safe_strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "writing register %s: %s",
reg_names[regno], err);
warning (msg);
return;
* 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 04:18:46 +01:00
}
regaddr += sizeof(int);
}
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}
else
for (regno = 0; regno < NUM_REGS; regno++)
store_inferior_registers (regno);
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}
/* Fetch one register. */
static void
fetch_register (regno)
int regno;
{
register unsigned int regaddr;
char buf[MAX_REGISTER_RAW_SIZE];
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] = call_ptrace (PT_RUREGS, inferior_pid,
(PTRACE_ARG3_TYPE) regaddr, 0);
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regaddr += sizeof (int);
if (errno != 0)
{
/* Warning, not error, in case we are attached; sometimes the
kernel doesn't let us at the registers. */
char *err = safe_strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "reading register %s: %s", reg_names[regno], err);
warning (msg);
goto error_exit;
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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 04:18:46 +01:00
if (regno == PCOQ_HEAD_REGNUM || regno == PCOQ_TAIL_REGNUM)
buf[3] &= ~0x3;
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supply_register (regno, buf);
error_exit:;
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}
/* 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. */
buffer[0] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
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}
if (count > 1) /* FIXME, avoid if even boundary */
{
buffer[count - 1]
= call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER, inferior_pid,
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(PTRACE_ARG3_TYPE) (addr + (count - 1) * sizeof (int)),
0);
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}
/* Copy data to be written over corresponding part of buffer */
1993-09-01 22:37:15 +02:00
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
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/* 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;
call_ptrace (addr < text_end ? PT_WIUSER : PT_WDUSER, inferior_pid,
* 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 04:18:46 +01:00
(PTRACE_ARG3_TYPE) addr,
buffer[i]);
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if (errno)
return 0;
}
}
else
{
/* Read all the longwords */
for (i = 0; i < count; i++, addr += sizeof (int))
{
errno = 0;
buffer[i] = call_ptrace (addr < text_end ? PT_RIUSER : PT_RDUSER,
inferior_pid, (PTRACE_ARG3_TYPE) addr, 0);
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if (errno)
return 0;
QUIT;
}
/* Copy appropriate bytes out of the buffer. */
1993-09-01 22:37:15 +02:00
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
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}
return len;
}