retrieving the PC from a signal handler caller. Fix thinko
in Stan's last change ("frame", should have been "frame->next").
If the next frame is a signal handler caller and it's a system
call which has entered the kernel ((PSW & 0x2) != 0), then the
saved pc is in %r2 instead of %r31.
and stack pointer during stepping, to speed things up.
A. Changes to not select a frame until we need a selected frame:
* blockframe.c (flush_cached_frames): Call select_frame (NULL, -1).
* infrun.c (wait_for_inferior): Move call to select_frame back to
normal_stop. This reverts a change of 13 Apr 94 (it says Jeff
Law, but the change was my idea); the only reason for that change
was so we could save and restore the selected frame in
wait_for_inferior, and now that flush_cached frames clears the
selected frame, that should work OK now.
B. Changes to not create a current_frame until we need one:
* blockframe.c (get_current_frame): If current_frame is NULL, try
to create an innermost frame.
* sparc-tdep.c (sparc_pop_frame), infcmd.c (run-stack_dummy),
infrun.c (wait_for_inferior), thread.c (thread_switch),
convex-tdep.c (set_thread_command), a29k-tdep.c (pop_frame),
alpha-tdep.c (alpha_pop_frame), convex-xdep.c (core_file_command),
h8300-tdep.c (h8300_pop_frame), h8500-tdep.c (h8300_pop_frame),
hppa-tdep.c (hppa_pop_frame), i386-tdep.c (i386_pop_frame),
i960-tdep.c (pop_frame), m68k-tdep.c
(m68k_pop_frame), mips-tdep.c (mips_pop_frame), rs6000-tdep.c
(push_dummy_frame, pop_dummy_frame, pop_frame), sh-tdep.c
(pop_frame), config/arm/tm-arm.h (POP_FRAME),
config/convex/tm-convex.h (POP_FRAME), config/gould/tm-pn.h
(POP_FRAME), config/ns32k/tm-merlin.h (POP_FRAME),
config/ns32k/tm-umax.h (POP_FRAME), config/tahoe/tm-tahoe.h
(POP_FRAME), config/vax/tm-vax.h (POP_FRAME): Don't
call create_new_frame.
* corelow.c (core_open), altos-xdep.c (core_file_command),
arm-xdep.c (core_file_command), gould-xdep.c (core_file_command),
m3-nat.c (select_thread), sun386-nat.c (core_file_command),
umax-xdep.c (core_file_command): Don't call create_new_frame; do
call flush_cached_frames.
* blockframe.c (reinit_frame_cache): Don't call create_new_frame
or select_frame.
C. Changes to get rid of stop_frame_address and instead only
fetch the frame pointer when we need it.
* breakpoint.c (bpstat_stop_status): Remove argument
frame_address; use FRAME_FP (get_current_frame ()).
* infrun.c (wait_for_inferior): Don't pass frame pointer to
bpstat_stop_status.
* infrun.c (wait_for_inferior): Use FRAME_FP (get_current_frame
()) instead of stop_frame_address.
* infrun.c (save_inferior_status, restore_inferior_status),
inferior.h (struct inferior_status): Don't save and restore
stop_frame_address.
* inferior.h, infcmd.c, thread.c (thread_switch), m3-nat.c
(select_thread): Remove stop_frame_address and uses thereof.
D. Same thing for the stack pointer.
* infrun.c (wait_for_inferior): Remove stop_sp and replace
uses thereof with read_sp ().
E. Change to eliminate one nasty little spot where we were
wanting to know the frame pointer from before the current step
(idea from GDB 3.5, which saved my ass, because my other ideas of
how to fix it were very baroque).
* infrun.c: Remove prev_frame_address.
* infrun.c (wait_for_inferior, step_over_function): Use
step_frame_address instead of prev_frame_address.
F. Same basic idea for the stack pointer.
* inferior.h, infcmd.c: New variable step_sp.
* infcmd.c (step_1, until_next_command): Set it.
* infrun.c: Remove prev_sp and replace uses by step_sp.
* infrun.c (wait_for_inferior): If we get out of the step
range, then set step_sp to the current stack pointer before we
start going again.
(hpread.o): Add dependencies.
* somread.c: Do not include "aout/aout64.h". SOM has nothing to
do with a.out.
(BYTES_IN_WORD): Delete.
(som_symfile_read): Call hpread_build_psymtabs to build any
minimal symbols based on the HP C native debug symbols.
(som_symfile_finish): Call hpread_symfile_finish.
(som_symfile_init): Call hpread_symfile_init.
* config/pa/tm-hppa.h (HPREAD_ADJUST_STACK_ADDRESS): Define.
* hppa-tdep.c (hpread_adjust_stack_address): New function.
* config/pa/hppabsd.mh (NATDEPFILES): Add hpread.o
* config/pa/hppahpux.mh (NATDEPFILES): Likewise.
* hpread.c: New file.
linker stub, then return the address the stub will return to.
(frame_saved_pc): Correctly restart the search for the saved
pc when a linker stub is encountered.
* hppa-tdep.c (inst_saves_gr): Handle 16 and 8 bit instruction
register stores emitted by the version 9 HP compilers.
(inst_saves_fr): Relax test for a specific base register (%r1);
this avoids losing with the version 9 HP compilers.
(skip_prologue): Try to skip argument stores emitted by the HP
compilers. It's not perfect, but it's better than before.
* Add rule for annotate.o to keep Sun make happy.
* configure.in: Add config for powerpc/Netware.
* partial-stab.h (near N_SO): Don't call START_PSYMTAB with null
filename. This speeds up handling of trailing N_SO stabs (they
mark the end of a .o file).
* target.c, target.h: Change the way pushing and popping of
targets work to support target overlays and inheritance.
* corelow.c, hppa-tdep.c, inflow.c, remote-nindy.c, utils.c:
Fixup references to current_target, due to previous changes.
* config/i386/tm-i386nw.h: Enable longjmp support. More work is
needed to get the address of longjmp out of the target.
ignore) a PID argument.
(hppa_pop_frame): Pass a PID to target_write_pc.
* config/pa/tm-hppa.h (TARGET_READ_PC, TARGET_WRITE_PC): Accept
and pass through a PID argument.
(target_read_pc, target_write_pc): Update prototypes.
moved into hppa-tdep.c.
(read_unwind_info): Likewise.
(pa_symfile_read): No longer call read_unwind_info. The unwind
tables will be read in as they are needed.
* hppa-tdep.c (compare_unwind_entries): New function.
(read_unwind_info, internalize_unwinds): Likewise.
(find_unwind_entry): Read in unwind information on demand.
descriptor was found, then assume this was not a frameless
function invocation.
(frame_saved_pc): If the saved PC is in a linker stub, then
return the return address which the linker stub will return to.
of a function.
(skip_trampoline_code): Rewrite and add support for argument
relocation stubs stubs, import/export stubs, calls through
"_sr4export" and cascaded trampolines.
(REGISTER_NAMES): Add entries for "right-half" of FP registers.
(REGISTER_RAW_SIZE, MAX_REGISTER_RAW_SIZE): Do not treat FP regs
differently. All registers are four bytes.
(REGISTER_BYTES, REGISTER_BYTE): Simplify now that all registers are
the same size.
(REGISTER_VIRTUAL_TYPE): Use builtin_type_float for all FP regs.
* hppa-tdep.c (pa_print_fp_reg): Update to print even numbered FP
registers as both single and double values (fetching 2nd 32bit half
as necessary). Annotate each register printed with its precision.
(pc_in_interrupt_handler): New function. Also add PARAM decl.
(find_proc_framesize): Deal with HPUX setting SAVE_SP bit for
signal trampoline and interrupt routines.
(frame_saved_pc): Handle signal trampolines and interrupt routines.
(frame_chain, frame_chain_valid): Likewise.
(hppa_frame_find_saved_regs): Likewise. Also deal with special
saved regs convention for SP.
* tm-hppa[bho].h: FRAME_FIND_SAVED_PC_IN_SIGTRAMP): Define.
(FRAME_BASE_BEFORE_SIGTRAMP): Define.
(FRAME_FIND_SAVED_REGS_IN_SIGTRAMP): Define.
* tm-hppah.h (IN_SIGTRAMP): Define.
reserved fields to hold a stub unwind entry type. Fix typo.
(stub_unwind_entry): New structure for raw stub unwind entries.
(stub_unwind_types): The types of stubs we may encounter.
(UNWIND_ENTRY_SIZE, STUB_UNWIND_ENTRY_SIZE): New defines.
* hppa-tdep.c (rp_saved): Use additional information provided
by linker stub unwind descriptors.
(frameless_function_invocation): Likewise.
(frame_chain_valid): Likewise.
* paread.c (compare_unwind_entries): New function for sorting
unwind table entries.
(read_unwind_info): Rewrite to remove dependency on host endianness.
Read in data from the $UNWIND_END$ subspace which contains linker
stub unwind descriptors. Merge that data into the basic unwind
table.
struct target_waitstatus. Change status argument to target_wait to
be struct target_waitstatus * instead of int *.
* target.h, infrun.c, all targets: Change type of signal arguments
to resume(), proceed(), and target_resume() from int to enum
target_signal.
* All targets (*_wait, *_resume): Change accordingly.
* infcmd.c (program_info, signal_command), throughout infrun.c,
* fork-child.c, solib.c, hppa-tdep.c, osfsolib.c: Use this stuff.
* convex-xdep.c, convex-tdep.c: Add FIXME's (getting the Convex
signal code stuff right with the new signals would be non-trivial).
* inferior.h (stop_signal): Make it enum target_signal not int.
* target.c, target.h (target_signal_to_string, target_signal_to_name,
target_signal_from_name): New functions.
* inftarg.c, target.h (target_signal_to_host, target_signal_from_host,
store_waitstatus): New functions.
* procfs.c (procfs_notice_signals): Use them.
* i960-tdep.c (i960_fault_to_signal): New function, to replace
print_fault.
* config/i960/tm-i960.h: Don't define PRINT_RANDOM_SIGNAL.
stabs-in-elf.
(pastab_build_psymtabs): Likewise.
* hppa-tdep.c: Change all comments to reference %r3 or frame pointer
rather than %r4.
(frame_chain, skip_prologue, dig_rp_from_stack): Handle %r3 as the
frame pointer.
* config/pa/tm-hppa.h (FP_REGNUM): Define as %r3.
(FIND_FRAME_SAVED_REGS): Handle %r3 as frame pointer.
(CALL_DUMMY): Likewise.
hppa-tdep.c (pa_print_fp_reg), infcmd.c (do_registers_info),
valops.c (value_assign): Use REGISTER_CONVERT_TO_* only if
REGISTER_CONVERTIBLE is defined, otherwise just copy the content.
Pass desired type to REGISTER_CONVERT_TO_*.
* config/m68k/tm-m68k.h, config/i960/tm-i960.h (REGISTER_CONVERT_*):
Pass length of desired type to store/extract_floating.
* config/i386/tm-arm.h, config/i386/tm-i386aix.h,
config/i386/tm-sun386.h, config/i386/tm-symmetry.h,
config/m88k/tm-m88k.h config/rs6000/tm-rs6000.h (REGISTER_CONVERT_*):
Use extract_floating and store_floating with length of desired type.
* config/m68k/tm-news.h (STORE,EXTRACT_RETURN_VALUE): Add type
parameter to REGISTER_CONVERT_*.
* config/a29k/tm-a29k.h, config/convex/tm-convex.h,
config/gould/tm-np1.h, config/gould/tm-pn.h, config/h8300/tm-h8300.h,
config/h8500/tm-h8500.h, config/i386/tm-i386v.h,
config/mips/tm-mips.h, config/ns32k/tm-merlin.h,
config/ns32k/tm-umax.h, config/pa/tm-hppa.h, config/pyr/tm-pyr.h,
config/sh/tm-sh.h, config/sparc/tm-sparc.h, config/tahoe/tm-tahoe.h,
config/vax/tm-vax.h, config/z8k/tm-z8k.h (REGISTER_CONVERTIBLE,
REGISTER_CONVERT_TO_RAW, REGISTER_CONVERT_TO_VIRTUAL): Remove
versions for which REGISTER_CONVERTIBLE is always false.
* z8k-tdep.c (register_convert_to_virtual, register_convert_to_raw):
Remove, no longer used.
* alpha-tdep.c (alpha_register_convert_to_raw,
alpha_register_convert_to_virtual): New routines to handle
the different raw formats in alpha floating point registers.
* config/alpha/tm-alpha.h (REGISTER_CONVERTIBLE,
REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW): Use them.
Change all references to stdout/stderr to gdb_stdout/gdb_stderr.
Replace all calls to stdio output functions with calls to
corresponding _unfiltered functions (`fprintf_unfiltered')
Replaced calls to fopen for output to gdb_fopen.
Added sufficient goo to utils.c and defs.h to make the above work.
The net effect is that stdio output functions are only directly used
in utils.c. Elsewhere, the _unfiltered and _filtered functions and
GDB_FILE type are used.
In the near future, GDB_FILE will stop being equivalant to FILE.
The semantics of some commands has changed in a very subtle way:
called in the right context, they may cause new occurences of
prompt_for_continue() behavior. The testsuite doesn't notice anything
like this, though.
Please respect this change by not reintroducing stdio output
dependencies in the main body of gdb code. All output from commands
should go to a GDB_FILE.
Target-specific code can still use stdio directly to communicate with
targets.
cleans up all kinds of hassles (which nm to use in munch, etc). The
new formatting conventions (mostly already followed) are that
the name of the _initialize_* routines must start in column zero,
and must not be inside #if.
* munch: Removed.
* Makefile.in: Remove references to munch.
* serial.c, remote.c, infptrace.c, maint.c, convex-tdep.c,
alpha-tdep.c, hp300ux-nat.c, hppab-nat.c, osfsolib.c, remote-es.c,
procfs.c, remote-udi.c, ser-go32.c, ultra3-xdep.c, sh-tdep.c,
i960-tdep.c, hppa-tdep.c, h8500-tdep.c, dpx2-nat.c, delta68-nat.c,
z8k-tdep.c: Make sure the above conventions are followed. Make
sure they are all declared as returning void. Clean up
miscellaneous comments and such.
(STORE_RETURN_VAULE): Pass the correct offset of the return
register to write_register_bytes.
* hppa-tdep.c: Use target_write_pc if PCOQ_TAIL_REGNUM was not saved.
* tm-hppa.h (TARGET_WRITE_PC): Define.
* hppa-tdep.c (hppa_fix_call_dummy): If in a syscall,
then return the address of the dummy itself rather than
the address of $$dyncall.
(target_write_pc): New function to store a new PC.
command. Now we use unwind info by default if we can find it.
* config/sparc: Move VARIABLES_INSIDE_BLOCK and SUN_FIXED_LBRAC_BUG
to tm-sparc.h so they are shared between Solaris and SunOS4.
* dbxread.c (process_one_symbol): Deal with SunOS4 acc N_STSYM and
N_GSYM functions.
(find_proc_framesize): Return 0 for linker stubs.
(rp_saved): Tell the caller where rp is saved.
(frame_chain_valid): Return 1 for linker stubs.
(frame_saved_pc): Use return value from rp_saved.
(find_proc_framesize): Return 0 for linker stubs.
(rp_saved): Tell the caller where rp is saved.
(frame_chain_valid): Return 1 for linker stubs.
(frame_saved_pc): Use return value from rp_saved.
({extract,store}_{signed_integer,unsigned_integer,address}):
New routines to replace SWAP_TARGET_AND_HOST.
All over: All uses of SWAP_TARGET_AND_HOST on integers replaced.
* gdb/hppa-tdep.c: Declare frame_saved_pc.
(frameless_function_invocation): New function.
(frame_saved_pc, init_extra_frame_info): Use
frameless_function_invocation.
* gdb/config/tm-hppa.h (SAVED_PC_AFTER_CALL): Use saved_pc_after
call instead of just grabbing the value currently in %r2.
(FRAMELESS_FUNCTION_INVOCATION): Use frameless_function_invocation.
* gdb/config/tm-hppah.h (SAVED_PC_AFTER_CALL): Delete private
definition and use the common one in tm-hppa.h.
* gdb/hppa-pinsn.c (print_insn): Handle 'r' and 'R' for break, rsm,
and ssm instructions.
* gdb/hppa-tdep.c (extract_5r_store, extract_5R_store): New
helper functions for print_insn.
