1991-11-12 23:50:47 +08:00
|
|
|
|
/* Target-dependent code for GDB, the GNU debugger.
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
|
1991-11-12 23:50:47 +08:00
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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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|
|
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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 "frame.h"
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|
|
|
#include "inferior.h"
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#include "symtab.h"
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|
#include "target.h"
|
1993-03-27 03:55:57 +08:00
|
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|
|
#include "gdbcore.h"
|
1991-11-12 23:50:47 +08:00
|
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|
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|
1993-03-13 07:12:59 +08:00
|
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|
#include "xcoffsolib.h"
|
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|
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|
1991-11-12 23:50:47 +08:00
|
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|
|
#include <sys/param.h>
|
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|
|
|
#include <sys/dir.h>
|
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|
|
#include <sys/user.h>
|
|
|
|
|
#include <signal.h>
|
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|
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|
#include <sys/ioctl.h>
|
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|
|
|
#include <fcntl.h>
|
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|
#include <a.out.h>
|
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|
#include <sys/file.h>
|
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|
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|
#include <sys/stat.h>
|
|
|
|
|
#include <sys/core.h>
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
#include <sys/ldr.h>
|
1991-11-12 23:50:47 +08:00
|
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|
1992-08-29 12:22:31 +08:00
|
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|
extern struct obstack frame_cache_obstack;
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|
1991-11-12 23:50:47 +08:00
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extern int errno;
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/* Nonzero if we just simulated a single step break. */
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|
int one_stepped;
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|
/* Breakpoint shadows for the single step instructions will be kept here. */
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static struct sstep_breaks {
|
1993-03-27 03:55:57 +08:00
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|
/* Address, or 0 if this is not in use. */
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CORE_ADDR address;
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/* Shadow contents. */
|
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|
char data[4];
|
1991-11-12 23:50:47 +08:00
|
|
|
|
} stepBreaks[2];
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
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|
|
/* Static function prototypes */
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static CORE_ADDR
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find_toc_address PARAMS ((CORE_ADDR pc));
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static CORE_ADDR
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branch_dest PARAMS ((int opcode, int instr, CORE_ADDR pc, CORE_ADDR safety));
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static void
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frame_get_cache_fsr PARAMS ((struct frame_info *fi,
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|
|
struct aix_framedata *fdatap));
|
1991-11-12 23:50:47 +08:00
|
|
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|
|
/*
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|
|
|
|
* Calculate the destination of a branch/jump. Return -1 if not a branch.
|
|
|
|
|
*/
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
static CORE_ADDR
|
1991-11-12 23:50:47 +08:00
|
|
|
|
branch_dest (opcode, instr, pc, safety)
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
int opcode;
|
|
|
|
|
int instr;
|
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|
|
|
CORE_ADDR pc;
|
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|
CORE_ADDR safety;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
{
|
|
|
|
|
register long offset;
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
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|
|
CORE_ADDR dest;
|
1991-11-12 23:50:47 +08:00
|
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|
int immediate;
|
|
|
|
|
int absolute;
|
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|
|
int ext_op;
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|
absolute = (int) ((instr >> 1) & 1);
|
|
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|
|
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|
|
|
switch (opcode) {
|
|
|
|
|
case 18 :
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
immediate = ((instr & ~3) << 6) >> 6; /* br unconditional */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
case 16 :
|
|
|
|
|
if (opcode != 18) /* br conditional */
|
|
|
|
|
immediate = ((instr & ~3) << 16) >> 16;
|
|
|
|
|
if (absolute)
|
|
|
|
|
dest = immediate;
|
|
|
|
|
else
|
|
|
|
|
dest = pc + immediate;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case 19 :
|
|
|
|
|
ext_op = (instr>>1) & 0x3ff;
|
|
|
|
|
|
|
|
|
|
if (ext_op == 16) /* br conditional register */
|
|
|
|
|
dest = read_register (LR_REGNUM) & ~3;
|
|
|
|
|
|
|
|
|
|
else if (ext_op == 528) /* br cond to count reg */
|
1993-04-27 00:44:03 +08:00
|
|
|
|
{
|
|
|
|
|
dest = read_register (CTR_REGNUM) & ~3;
|
|
|
|
|
|
|
|
|
|
/* If we are about to execute a system call, dest is something
|
|
|
|
|
like 0x22fc or 0x3b00. Upon completion the system call
|
|
|
|
|
will return to the address in the link register. */
|
|
|
|
|
if (dest < TEXT_SEGMENT_BASE)
|
|
|
|
|
dest = read_register (LR_REGNUM) & ~3;
|
|
|
|
|
}
|
1991-11-12 23:50:47 +08:00
|
|
|
|
else return -1;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default: return -1;
|
|
|
|
|
}
|
1992-02-29 14:03:43 +08:00
|
|
|
|
return (dest < TEXT_SEGMENT_BASE) ? safety : dest;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* AIX does not support PT_STEP. Simulate it. */
|
|
|
|
|
|
1992-09-18 15:40:15 +08:00
|
|
|
|
void
|
1991-11-12 23:50:47 +08:00
|
|
|
|
single_step (signal)
|
1992-09-18 15:40:15 +08:00
|
|
|
|
int signal;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
{
|
|
|
|
|
#define INSNLEN(OPCODE) 4
|
|
|
|
|
|
|
|
|
|
static char breakp[] = BREAKPOINT;
|
1993-03-27 03:55:57 +08:00
|
|
|
|
int ii, insn;
|
|
|
|
|
CORE_ADDR loc;
|
|
|
|
|
CORE_ADDR breaks[2];
|
|
|
|
|
int opcode;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
if (!one_stepped) {
|
|
|
|
|
loc = read_pc ();
|
|
|
|
|
|
1993-03-31 07:06:29 +08:00
|
|
|
|
read_memory (loc, (char *) &insn, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
breaks[0] = loc + INSNLEN(insn);
|
|
|
|
|
opcode = insn >> 26;
|
|
|
|
|
breaks[1] = branch_dest (opcode, insn, loc, breaks[0]);
|
|
|
|
|
|
1992-02-29 14:03:43 +08:00
|
|
|
|
/* Don't put two breakpoints on the same address. */
|
|
|
|
|
if (breaks[1] == breaks[0])
|
|
|
|
|
breaks[1] = -1;
|
|
|
|
|
|
1993-03-27 03:55:57 +08:00
|
|
|
|
stepBreaks[1].address = 0;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
for (ii=0; ii < 2; ++ii) {
|
|
|
|
|
|
|
|
|
|
/* ignore invalid breakpoint. */
|
|
|
|
|
if ( breaks[ii] == -1)
|
|
|
|
|
continue;
|
|
|
|
|
|
1993-03-27 03:55:57 +08:00
|
|
|
|
read_memory (breaks[ii], stepBreaks[ii].data, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
1993-03-27 03:55:57 +08:00
|
|
|
|
write_memory (breaks[ii], breakp, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
stepBreaks[ii].address = breaks[ii];
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
one_stepped = 1;
|
1992-09-18 15:40:15 +08:00
|
|
|
|
} else {
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
/* remove step breakpoints. */
|
|
|
|
|
for (ii=0; ii < 2; ++ii)
|
1993-03-27 03:55:57 +08:00
|
|
|
|
if (stepBreaks[ii].address != 0)
|
1991-11-12 23:50:47 +08:00
|
|
|
|
write_memory
|
1993-03-27 03:55:57 +08:00
|
|
|
|
(stepBreaks[ii].address, stepBreaks[ii].data, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
one_stepped = 0;
|
|
|
|
|
}
|
1992-09-18 15:40:15 +08:00
|
|
|
|
errno = 0; /* FIXME, don't ignore errors! */
|
1993-03-27 03:55:57 +08:00
|
|
|
|
/* What errors? {read,write}_memory call error(). */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* return pc value after skipping a function prologue. */
|
|
|
|
|
|
|
|
|
|
skip_prologue (pc)
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
CORE_ADDR pc;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
{
|
1993-07-10 09:35:53 +08:00
|
|
|
|
char buf[4];
|
1991-11-12 23:50:47 +08:00
|
|
|
|
unsigned int tmp;
|
1993-07-10 09:35:53 +08:00
|
|
|
|
unsigned long op;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
1993-07-10 09:35:53 +08:00
|
|
|
|
if (target_read_memory (pc, buf, 4))
|
1991-11-12 23:50:47 +08:00
|
|
|
|
return pc; /* Can't access it -- assume no prologue. */
|
1993-07-10 09:35:53 +08:00
|
|
|
|
op = extract_unsigned_integer (buf, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
/* Assume that subsequent fetches can fail with low probability. */
|
|
|
|
|
|
|
|
|
|
if (op == 0x7c0802a6) { /* mflr r0 */
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((op & 0xfc00003e) == 0x7c000026) { /* mfcr Rx */
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((op & 0xfc000000) == 0x48000000) { /* bl foo, to save fprs??? */
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
1992-03-30 06:33:35 +08:00
|
|
|
|
|
|
|
|
|
/* At this point, make sure this is not a trampoline function
|
|
|
|
|
(a function that simply calls another functions, and nothing else).
|
|
|
|
|
If the next is not a nop, this branch was part of the function
|
|
|
|
|
prologue. */
|
|
|
|
|
|
|
|
|
|
if (op == 0x4def7b82 || /* crorc 15, 15, 15 */
|
|
|
|
|
op == 0x0)
|
|
|
|
|
return pc - 4; /* don't skip over this branch */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
if ((op & 0xfc1f0000) == 0xd8010000) { /* stfd Rx,NUM(r1) */
|
|
|
|
|
pc += 4; /* store floating register double */
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
|
|
|
|
}
|
|
|
|
|
|
1991-11-12 23:50:47 +08:00
|
|
|
|
if ((op & 0xfc1f0000) == 0xbc010000) { /* stm Rx, NUM(r1) */
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
while (((tmp = op >> 16) == 0x9001) || /* st r0, NUM(r1) */
|
|
|
|
|
(tmp == 0x9421) || /* stu r1, NUM(r1) */
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
(tmp == 0x93e1)) /* st r31,NUM(r1) */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
{
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
while ((tmp = (op >> 22)) == 0x20f) { /* l r31, ... or */
|
|
|
|
|
pc += 4; /* l r30, ... */
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
|
|
|
|
}
|
|
|
|
|
|
1992-03-13 09:42:25 +08:00
|
|
|
|
/* store parameters into stack */
|
1992-02-29 14:03:43 +08:00
|
|
|
|
while(
|
|
|
|
|
(op & 0xfc1f0000) == 0xd8010000 || /* stfd Rx,NUM(r1) */
|
|
|
|
|
(op & 0xfc1f0000) == 0x90010000 || /* st r?, NUM(r1) */
|
|
|
|
|
(op & 0xfc000000) == 0xfc000000 || /* frsp, fp?, .. */
|
|
|
|
|
(op & 0xd0000000) == 0xd0000000) /* stfs, fp?, .. */
|
|
|
|
|
{
|
|
|
|
|
pc += 4; /* store fpr double */
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
|
|
|
|
}
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
if (op == 0x603f0000) { /* oril r31, r1, 0x0 */
|
|
|
|
|
pc += 4; /* this happens if r31 is used as */
|
|
|
|
|
op = read_memory_integer (pc, 4); /* frame ptr. (gcc does that) */
|
|
|
|
|
|
1992-02-29 14:03:43 +08:00
|
|
|
|
tmp = 0;
|
|
|
|
|
while ((op >> 16) == (0x907f + tmp)) { /* st r3, NUM(r31) */
|
|
|
|
|
pc += 4; /* st r4, NUM(r31), ... */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
op = read_memory_integer (pc, 4);
|
1992-02-29 14:03:43 +08:00
|
|
|
|
tmp += 0x20;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
}
|
1992-03-13 09:42:25 +08:00
|
|
|
|
#if 0
|
|
|
|
|
/* I have problems with skipping over __main() that I need to address
|
|
|
|
|
* sometime. Previously, I used to use misc_function_vector which
|
|
|
|
|
* didn't work as well as I wanted to be. -MGO */
|
|
|
|
|
|
|
|
|
|
/* If the first thing after skipping a prolog is a branch to a function,
|
|
|
|
|
this might be a call to an initializer in main(), introduced by gcc2.
|
|
|
|
|
We'd like to skip over it as well. Fortunately, xlc does some extra
|
|
|
|
|
work before calling a function right after a prologue, thus we can
|
|
|
|
|
single out such gcc2 behaviour. */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if ((op & 0xfc000001) == 0x48000001) { /* bl foo, an initializer function? */
|
|
|
|
|
op = read_memory_integer (pc+4, 4);
|
|
|
|
|
|
|
|
|
|
if (op == 0x4def7b82) { /* cror 0xf, 0xf, 0xf (nop) */
|
|
|
|
|
|
|
|
|
|
/* check and see if we are in main. If so, skip over this initializer
|
|
|
|
|
function as well. */
|
|
|
|
|
|
|
|
|
|
tmp = find_pc_misc_function (pc);
|
* defs.h (STRCMP, STREQ, STREQN): New macros.
* defs.h (demangle_and_match): Remove prototype.
* dwarfread.c (STREQ, STREQN): Remove macros, replaced with STREQ
and STREQN defined in defs.h.
* dwarfread.c (set_cu_language): For completely unknown languages,
try to deduce the language from the filename. Retain behavior
that for known languages we don't know how to handle, we use
language_unknown.
* dwarfread.c (enum_type, symthesize_typedef): Initialize language
and demangled name fields in symbol.
* dwarfread.c, mipsread.c, partial-stab.h: For all usages of
ADD_PSYMBOL_TO_LIST, add language and objfile parameters.
* dwarfread.c (new_symbol): Attempt to demangle C++ symbol names
and cache the results in SYMBOL_DEMANGLED_NAME for the symbol.
* elfread.c (STREQ): Remove macro, use STREQ defined in defs.h.
Replace usages throughout.
* elfread.c (demangle.h): Include.
* elfread.c (record_minimal_symbol): Remove prototype and function.
* gdbtypes.h, symtab.h (B_SET, B_CLR, B_TST, B_TYPE, B_BYTES,
B_CLRALL): Moved from symtab.h to gdbtypes.h.
* infcmd.c (jump_command): Remove code to demangle name and add
it to a cleanup list. Now just use SYMBOL_DEMANGLED_NAME.
* minsyms.c (demangle.h): Include.
* minsyms.c (lookup_minimal_symbol): Indent comment to match code.
* minsyms.c (install_minimal_symbols): Attempt to demangle symbol
names as C++ names, and cache them in SYMBOL_DEMANGLED_NAME.
* mipsread.c (psymtab_language): Add static variable.
* stabsread.c (demangle.h): Include.
* stabsread.c (define_symbol): Attempt to demangle C++ symbol
names and cache them in the SYMBOL_DEMANGLED_NAME field.
* stack.c (return_command): Remove explicit demangling of name
and use of cleanups. Just use SYMBOL_DEMANGLED_NAME.
* symfile.c (demangle.h): Include.
* symfile.c (add_psymbol_to_list, add_psymbol_addr_to_list): Fix
to match macros in symfile.h and allow them to be compiled
if INLINE_ADD_PSYMBOL is not true.
* symfile.h (INLINE_ADD_PSYMBOL): Default to true if not set.
* symfile.h (ADD_PSYMBOL_*): Add language and objfile parameters.
Add code to demangle and cache C++ symbol names. Use macro form
if INLINE_ADD_PSYMBOL is true, otherwise use C function form.
* symmisc.c (add_psymbol_to_list, add_psymbol_addr_to_list):
Remove, also defined in symfile.c, which we already fixed.
* symtab.c (expensive_mangler): Remove prototype and function.
* symtab.c (find_methods): Remove physnames parameter and fix
prototype to match.
* symtab.c (completion_list_add_symbol): Name changed to
completion_list_add_name.
* symtab.c (COMPLETION_LIST_ADD_SYMBOL): New macro, adds both
the normal symbol name and the cached C++ demangled name.
* symtab.c (lookup_demangled_partial_symbol,
lookup_demangled_block_symbol): Remove prototypes and functions.
* symtab.c (lookup_symbol): Remove use of expensive_mangler,
use lookup_block_symbol instead of lookup_demangled_block_symbol.
Remove code to try demangling names and matching them.
* symtab.c (lookup_partial_symbol, lookup_block_symbol):
Fix to try matching the cached demangled name if no match is
found using the regular symbol name.
* symtab.c (find_methods): Remove unused physnames array.
* symtab.c (name_match, NAME_MATCH): Remove function and macro,
replaced with SYMBOL_MATCHES_REGEXP from symtab.h.
* symtab.c (completion_list_add_symbol): Rewrite to use cached
C++ demangled symbol names.
* symtab.h: Much reformatting of structures and such to add
whitespace to make them more readable, and make them more
consistent with other gdb structure definitions.
* symtab.h (general_symbol_info): New struct containing fields
common to all symbols.
* symtab.h (SYMBOL_LANGUAGE, SYMBOL_DEMANGLED_NAME,
SYMBOL_SOURCE_NAME, SYMBOL_LINKAGE_NAME, SYMBOL_MATCHES_NAME,
SYMBOL_MATCHES_REGEXP, MSYMBOL_INFO, MSYMBOL_TYPE): New macros.
* symtab. (struct minimal_symbol, struct partial_symbol, struct
symbol): Use general_symbol_info struct.
* utils.c (demangle_and_match): Remove, no longer used.
* valops.c (demangle.h): Include.
* xcoffexec.c (eq): Remove macro, replace usages with STREQ.
* blockframe.c, breakpoint.c, c-exp.y, c-valprint.c, dbxread.c,
infcmd.c, m2-exp.y, minsyms.c, objfiles.h, solib.c, stack.c,
symmisc.c, symtab.c, valops.c: Replace references to minimal
symbol fields with appropriate macros.
* breakpoint.c, buildsym.c, c-exp.y, c-typeprint.c, c-valprint.c,
coffread.c, command.c, convex-tdep.c, cp-valprint.c, dbxread.c,
demangle.c, elfread.c, energize.c, environ.c, exec.c,
gdbtypes.c, i960-tdep.c, infrun.c, infrun-hacked.c, language.c,
main.c, minsyms.c, mipsread.c, partial-stab.h, remote-es1800.c,
remote-nindy.c, remote-udi.c, rs6000-tdep.c, solib.c, source.c,
sparc-pinsn.c, stabsread.c, standalone.c, state.c, stuff.c,
symfile.c, symmisc.c, symtab.c, symtab.h, tm-sysv4.h,
tm-ultra3.h, values.c, xcoffexec.c, xcoffread.c: Replace strcmp
and strncmp usages with STREQ, STREQN, or STRCMP as appropriate.
* breakpoint.c, buildsym.c, c-typeprint.c, expprint.c, findvar.c,
mipsread.c, printcmd.c, source.c, stabsread.c, stack.c,
symmisc.c, tm-29k.h, valops.c, values.c: Replace SYMBOL_NAME
references with SYMBOL_SOURCE_NAME or SYMBOL_LINKAGE_NAME as
appropriate.
* buildsym.c (start_subfile, patch_subfile_names): Default the
source language to what can be deduced from the filename.
* buildsym.c (end_symtab): Update the source language in the
allocated symtab to match what we have been using.
* buildsym.h (struct subfile): Add a language field.
* c-typeprint.c (c_print_type): Remove code to do explicit
demangling.
* dbxread.c (psymtab_language): Add static variable.
* dbxread.c (start_psymtab): Initialize psymtab_language using
deduce_language_from_filename.
1992-12-23 14:34:57 +08:00
|
|
|
|
if (tmp >= 0 && STREQ (misc_function_vector [tmp].name, "main"))
|
1992-03-13 09:42:25 +08:00
|
|
|
|
return pc + 8;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
#endif /* 0 */
|
|
|
|
|
|
1991-11-12 23:50:47 +08:00
|
|
|
|
return pc;
|
|
|
|
|
}
|
|
|
|
|
|
1992-02-29 14:03:43 +08:00
|
|
|
|
|
1991-11-12 23:50:47 +08:00
|
|
|
|
/*************************************************************************
|
|
|
|
|
Support for creating pushind a dummy frame into the stack, and popping
|
|
|
|
|
frames, etc.
|
|
|
|
|
*************************************************************************/
|
|
|
|
|
|
1992-02-29 14:03:43 +08:00
|
|
|
|
/* The total size of dummy frame is 436, which is;
|
|
|
|
|
|
|
|
|
|
32 gpr's - 128 bytes
|
|
|
|
|
32 fpr's - 256 "
|
|
|
|
|
7 the rest - 28 "
|
|
|
|
|
and 24 extra bytes for the callee's link area. The last 24 bytes
|
|
|
|
|
for the link area might not be necessary, since it will be taken
|
|
|
|
|
care of by push_arguments(). */
|
|
|
|
|
|
|
|
|
|
#define DUMMY_FRAME_SIZE 436
|
|
|
|
|
|
1991-11-12 23:50:47 +08:00
|
|
|
|
#define DUMMY_FRAME_ADDR_SIZE 10
|
|
|
|
|
|
|
|
|
|
/* Make sure you initialize these in somewhere, in case gdb gives up what it
|
1992-02-29 14:03:43 +08:00
|
|
|
|
was debugging and starts debugging something else. FIXMEibm */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
static int dummy_frame_count = 0;
|
|
|
|
|
static int dummy_frame_size = 0;
|
|
|
|
|
static CORE_ADDR *dummy_frame_addr = 0;
|
|
|
|
|
|
|
|
|
|
extern int stop_stack_dummy;
|
|
|
|
|
|
|
|
|
|
/* push a dummy frame into stack, save all register. Currently we are saving
|
|
|
|
|
only gpr's and fpr's, which is not good enough! FIXMEmgo */
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
void
|
1991-11-12 23:50:47 +08:00
|
|
|
|
push_dummy_frame ()
|
|
|
|
|
{
|
1993-03-31 07:06:29 +08:00
|
|
|
|
/* stack pointer. */
|
|
|
|
|
CORE_ADDR sp;
|
|
|
|
|
|
|
|
|
|
/* link register. */
|
|
|
|
|
CORE_ADDR pc;
|
|
|
|
|
/* Same thing, target byte order. */
|
|
|
|
|
char pc_targ[4];
|
|
|
|
|
|
1991-11-12 23:50:47 +08:00
|
|
|
|
int ii;
|
|
|
|
|
|
1992-09-19 20:08:23 +08:00
|
|
|
|
target_fetch_registers (-1);
|
1992-03-02 09:55:31 +08:00
|
|
|
|
|
1991-11-12 23:50:47 +08:00
|
|
|
|
if (dummy_frame_count >= dummy_frame_size) {
|
|
|
|
|
dummy_frame_size += DUMMY_FRAME_ADDR_SIZE;
|
|
|
|
|
if (dummy_frame_addr)
|
|
|
|
|
dummy_frame_addr = (CORE_ADDR*) xrealloc
|
|
|
|
|
(dummy_frame_addr, sizeof(CORE_ADDR) * (dummy_frame_size));
|
|
|
|
|
else
|
|
|
|
|
dummy_frame_addr = (CORE_ADDR*)
|
|
|
|
|
xmalloc (sizeof(CORE_ADDR) * (dummy_frame_size));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
sp = read_register(SP_REGNUM);
|
1993-03-31 07:06:29 +08:00
|
|
|
|
pc = read_register(PC_REGNUM);
|
|
|
|
|
memcpy (pc_targ, (char *) &pc, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
dummy_frame_addr [dummy_frame_count++] = sp;
|
|
|
|
|
|
|
|
|
|
/* Be careful! If the stack pointer is not decremented first, then kernel
|
1992-03-02 09:55:31 +08:00
|
|
|
|
thinks he is free to use the space underneath it. And kernel actually
|
1991-11-12 23:50:47 +08:00
|
|
|
|
uses that area for IPC purposes when executing ptrace(2) calls. So
|
|
|
|
|
before writing register values into the new frame, decrement and update
|
|
|
|
|
%sp first in order to secure your frame. */
|
|
|
|
|
|
1992-02-29 14:03:43 +08:00
|
|
|
|
write_register (SP_REGNUM, sp-DUMMY_FRAME_SIZE);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
/* gdb relies on the state of current_frame. We'd better update it,
|
|
|
|
|
otherwise things like do_registers_info() wouldn't work properly! */
|
|
|
|
|
|
|
|
|
|
flush_cached_frames ();
|
1992-02-29 14:03:43 +08:00
|
|
|
|
set_current_frame (create_new_frame (sp-DUMMY_FRAME_SIZE, pc));
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
/* save program counter in link register's space. */
|
1993-03-31 07:06:29 +08:00
|
|
|
|
write_memory (sp+8, pc_targ, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
1992-03-02 09:55:31 +08:00
|
|
|
|
/* save all floating point and general purpose registers here. */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
/* fpr's, f0..f31 */
|
|
|
|
|
for (ii = 0; ii < 32; ++ii)
|
|
|
|
|
write_memory (sp-8-(ii*8), ®isters[REGISTER_BYTE (31-ii+FP0_REGNUM)], 8);
|
|
|
|
|
|
|
|
|
|
/* gpr's r0..r31 */
|
|
|
|
|
for (ii=1; ii <=32; ++ii)
|
|
|
|
|
write_memory (sp-256-(ii*4), ®isters[REGISTER_BYTE (32-ii)], 4);
|
|
|
|
|
|
1992-02-29 14:03:43 +08:00
|
|
|
|
/* so far, 32*2 + 32 words = 384 bytes have been written.
|
|
|
|
|
7 extra registers in our register set: pc, ps, cnd, lr, cnt, xer, mq */
|
|
|
|
|
|
|
|
|
|
for (ii=1; ii <= (LAST_SP_REGNUM-FIRST_SP_REGNUM+1); ++ii) {
|
|
|
|
|
write_memory (sp-384-(ii*4),
|
|
|
|
|
®isters[REGISTER_BYTE (FPLAST_REGNUM + ii)], 4);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Save sp or so called back chain right here. */
|
|
|
|
|
write_memory (sp-DUMMY_FRAME_SIZE, &sp, 4);
|
|
|
|
|
sp -= DUMMY_FRAME_SIZE;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
/* And finally, this is the back chain. */
|
1993-03-31 07:06:29 +08:00
|
|
|
|
write_memory (sp+8, pc_targ, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Pop a dummy frame.
|
|
|
|
|
|
|
|
|
|
In rs6000 when we push a dummy frame, we save all of the registers. This
|
|
|
|
|
is usually done before user calls a function explicitly.
|
|
|
|
|
|
1992-02-29 14:03:43 +08:00
|
|
|
|
After a dummy frame is pushed, some instructions are copied into stack,
|
|
|
|
|
and stack pointer is decremented even more. Since we don't have a frame
|
|
|
|
|
pointer to get back to the parent frame of the dummy, we start having
|
|
|
|
|
trouble poping it. Therefore, we keep a dummy frame stack, keeping
|
|
|
|
|
addresses of dummy frames as such. When poping happens and when we
|
|
|
|
|
detect that was a dummy frame, we pop it back to its parent by using
|
|
|
|
|
dummy frame stack (`dummy_frame_addr' array).
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
|
|
|
|
|
FIXME: This whole concept is broken. You should be able to detect
|
|
|
|
|
a dummy stack frame *on the user's stack itself*. When you do,
|
|
|
|
|
then you know the format of that stack frame -- including its
|
|
|
|
|
saved SP register! There should *not* be a separate stack in the
|
1992-08-29 12:22:31 +08:00
|
|
|
|
GDB process that keeps track of these dummy frames! -- gnu@cygnus.com Aug92
|
1991-11-12 23:50:47 +08:00
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
pop_dummy_frame ()
|
|
|
|
|
{
|
|
|
|
|
CORE_ADDR sp, pc;
|
|
|
|
|
int ii;
|
|
|
|
|
sp = dummy_frame_addr [--dummy_frame_count];
|
|
|
|
|
|
|
|
|
|
/* restore all fpr's. */
|
|
|
|
|
for (ii = 1; ii <= 32; ++ii)
|
|
|
|
|
read_memory (sp-(ii*8), ®isters[REGISTER_BYTE (32-ii+FP0_REGNUM)], 8);
|
|
|
|
|
|
|
|
|
|
/* restore all gpr's */
|
|
|
|
|
for (ii=1; ii <= 32; ++ii) {
|
|
|
|
|
read_memory (sp-256-(ii*4), ®isters[REGISTER_BYTE (32-ii)], 4);
|
|
|
|
|
}
|
|
|
|
|
|
1992-02-29 14:03:43 +08:00
|
|
|
|
/* restore the rest of the registers. */
|
|
|
|
|
for (ii=1; ii <=(LAST_SP_REGNUM-FIRST_SP_REGNUM+1); ++ii)
|
|
|
|
|
read_memory (sp-384-(ii*4),
|
|
|
|
|
®isters[REGISTER_BYTE (FPLAST_REGNUM + ii)], 4);
|
|
|
|
|
|
|
|
|
|
read_memory (sp-(DUMMY_FRAME_SIZE-8),
|
|
|
|
|
®isters [REGISTER_BYTE(PC_REGNUM)], 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
/* when a dummy frame was being pushed, we had to decrement %sp first, in
|
|
|
|
|
order to secure astack space. Thus, saved %sp (or %r1) value, is not the
|
|
|
|
|
one we should restore. Change it with the one we need. */
|
|
|
|
|
|
|
|
|
|
*(int*)®isters [REGISTER_BYTE(FP_REGNUM)] = sp;
|
|
|
|
|
|
|
|
|
|
/* Now we can restore all registers. */
|
|
|
|
|
|
1992-09-19 20:08:23 +08:00
|
|
|
|
target_store_registers (-1);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
pc = read_pc ();
|
|
|
|
|
flush_cached_frames ();
|
|
|
|
|
set_current_frame (create_new_frame (sp, pc));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* pop the innermost frame, go back to the caller. */
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
void
|
1991-11-12 23:50:47 +08:00
|
|
|
|
pop_frame ()
|
|
|
|
|
{
|
1993-03-31 07:06:29 +08:00
|
|
|
|
CORE_ADDR pc, lr, sp, prev_sp; /* %pc, %lr, %sp */
|
1992-03-02 09:55:31 +08:00
|
|
|
|
struct aix_framedata fdata;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
FRAME fr = get_current_frame ();
|
|
|
|
|
int addr, ii;
|
|
|
|
|
|
|
|
|
|
pc = read_pc ();
|
|
|
|
|
sp = FRAME_FP (fr);
|
|
|
|
|
|
|
|
|
|
if (stop_stack_dummy && dummy_frame_count) {
|
|
|
|
|
pop_dummy_frame ();
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* figure out previous %pc value. If the function is frameless, it is
|
|
|
|
|
still in the link register, otherwise walk the frames and retrieve the
|
|
|
|
|
saved %pc value in the previous frame. */
|
|
|
|
|
|
|
|
|
|
addr = get_pc_function_start (fr->pc) + FUNCTION_START_OFFSET;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
function_frame_info (addr, &fdata);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
1993-03-31 07:06:29 +08:00
|
|
|
|
prev_sp = read_memory_integer (sp, 4);
|
1992-03-02 09:55:31 +08:00
|
|
|
|
if (fdata.frameless)
|
1991-11-12 23:50:47 +08:00
|
|
|
|
lr = read_register (LR_REGNUM);
|
|
|
|
|
else
|
1993-03-31 07:06:29 +08:00
|
|
|
|
lr = read_memory_integer (prev_sp+8, 4);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
/* reset %pc value. */
|
|
|
|
|
write_register (PC_REGNUM, lr);
|
|
|
|
|
|
|
|
|
|
/* reset register values if any was saved earlier. */
|
1992-03-02 09:55:31 +08:00
|
|
|
|
addr = prev_sp - fdata.offset;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
1992-03-02 09:55:31 +08:00
|
|
|
|
if (fdata.saved_gpr != -1)
|
|
|
|
|
for (ii=fdata.saved_gpr; ii <= 31; ++ii) {
|
1991-11-12 23:50:47 +08:00
|
|
|
|
read_memory (addr, ®isters [REGISTER_BYTE (ii)], 4);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
addr += 4;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
1992-03-02 09:55:31 +08:00
|
|
|
|
if (fdata.saved_fpr != -1)
|
|
|
|
|
for (ii=fdata.saved_fpr; ii <= 31; ++ii) {
|
1991-11-12 23:50:47 +08:00
|
|
|
|
read_memory (addr, ®isters [REGISTER_BYTE (ii+FP0_REGNUM)], 8);
|
|
|
|
|
addr += 8;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
write_register (SP_REGNUM, prev_sp);
|
1992-09-19 20:08:23 +08:00
|
|
|
|
target_store_registers (-1);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
flush_cached_frames ();
|
|
|
|
|
set_current_frame (create_new_frame (prev_sp, lr));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* fixup the call sequence of a dummy function, with the real function address.
|
|
|
|
|
its argumets will be passed by gdb. */
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
void
|
1991-11-12 23:50:47 +08:00
|
|
|
|
fix_call_dummy(dummyname, pc, fun, nargs, type)
|
|
|
|
|
char *dummyname;
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
CORE_ADDR pc;
|
|
|
|
|
CORE_ADDR fun;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
int nargs; /* not used */
|
|
|
|
|
int type; /* not used */
|
|
|
|
|
{
|
|
|
|
|
#define TOC_ADDR_OFFSET 20
|
|
|
|
|
#define TARGET_ADDR_OFFSET 28
|
|
|
|
|
|
|
|
|
|
int ii;
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
CORE_ADDR target_addr;
|
|
|
|
|
CORE_ADDR tocvalue;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
target_addr = fun;
|
|
|
|
|
tocvalue = find_toc_address (target_addr);
|
|
|
|
|
|
|
|
|
|
ii = *(int*)((char*)dummyname + TOC_ADDR_OFFSET);
|
|
|
|
|
ii = (ii & 0xffff0000) | (tocvalue >> 16);
|
|
|
|
|
*(int*)((char*)dummyname + TOC_ADDR_OFFSET) = ii;
|
|
|
|
|
|
|
|
|
|
ii = *(int*)((char*)dummyname + TOC_ADDR_OFFSET+4);
|
|
|
|
|
ii = (ii & 0xffff0000) | (tocvalue & 0x0000ffff);
|
|
|
|
|
*(int*)((char*)dummyname + TOC_ADDR_OFFSET+4) = ii;
|
|
|
|
|
|
|
|
|
|
ii = *(int*)((char*)dummyname + TARGET_ADDR_OFFSET);
|
|
|
|
|
ii = (ii & 0xffff0000) | (target_addr >> 16);
|
|
|
|
|
*(int*)((char*)dummyname + TARGET_ADDR_OFFSET) = ii;
|
|
|
|
|
|
|
|
|
|
ii = *(int*)((char*)dummyname + TARGET_ADDR_OFFSET+4);
|
|
|
|
|
ii = (ii & 0xffff0000) | (target_addr & 0x0000ffff);
|
|
|
|
|
*(int*)((char*)dummyname + TARGET_ADDR_OFFSET+4) = ii;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* return information about a function frame.
|
1992-03-02 09:55:31 +08:00
|
|
|
|
in struct aix_frameinfo fdata:
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
- frameless is TRUE, if function does not have a frame.
|
|
|
|
|
- nosavedpc is TRUE, if function does not save %pc value in its frame.
|
1991-11-12 23:50:47 +08:00
|
|
|
|
- offset is the number of bytes used in the frame to save registers.
|
|
|
|
|
- saved_gpr is the number of the first saved gpr.
|
|
|
|
|
- saved_fpr is the number of the first saved fpr.
|
1992-03-02 09:55:31 +08:00
|
|
|
|
- alloca_reg is the number of the register used for alloca() handling.
|
|
|
|
|
Otherwise -1.
|
1991-11-12 23:50:47 +08:00
|
|
|
|
*/
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
void
|
1992-03-02 09:55:31 +08:00
|
|
|
|
function_frame_info (pc, fdata)
|
1992-08-29 12:22:31 +08:00
|
|
|
|
CORE_ADDR pc;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
struct aix_framedata *fdata;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
{
|
|
|
|
|
unsigned int tmp;
|
|
|
|
|
register unsigned int op;
|
|
|
|
|
|
1992-03-02 09:55:31 +08:00
|
|
|
|
fdata->offset = 0;
|
|
|
|
|
fdata->saved_gpr = fdata->saved_fpr = fdata->alloca_reg = -1;
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 1;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
|
|
|
|
if (op == 0x7c0802a6) { /* mflr r0 */
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->nosavedpc = 0;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
fdata->frameless = 0;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
else /* else, pc is not saved */
|
|
|
|
|
fdata->nosavedpc = 1;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
if ((op & 0xfc00003e) == 0x7c000026) { /* mfcr Rx */
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 0;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((op & 0xfc000000) == 0x48000000) { /* bl foo, to save fprs??? */
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
1992-03-30 06:33:35 +08:00
|
|
|
|
/* At this point, make sure this is not a trampoline function
|
|
|
|
|
(a function that simply calls another functions, and nothing else).
|
|
|
|
|
If the next is not a nop, this branch was part of the function
|
|
|
|
|
prologue. */
|
|
|
|
|
|
|
|
|
|
if (op == 0x4def7b82 || /* crorc 15, 15, 15 */
|
|
|
|
|
op == 0x0)
|
|
|
|
|
return; /* prologue is over */
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 0;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((op & 0xfc1f0000) == 0xd8010000) { /* stfd Rx,NUM(r1) */
|
|
|
|
|
pc += 4; /* store floating register double */
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 0;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((op & 0xfc1f0000) == 0xbc010000) { /* stm Rx, NUM(r1) */
|
|
|
|
|
int tmp2;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
fdata->saved_gpr = (op >> 21) & 0x1f;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
tmp2 = op & 0xffff;
|
|
|
|
|
if (tmp2 > 0x7fff)
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
tmp2 = (~0 &~ 0xffff) | tmp2;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
if (tmp2 < 0) {
|
|
|
|
|
tmp2 = tmp2 * -1;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
fdata->saved_fpr = (tmp2 - ((32 - fdata->saved_gpr) * 4)) / 8;
|
|
|
|
|
if ( fdata->saved_fpr > 0)
|
|
|
|
|
fdata->saved_fpr = 32 - fdata->saved_fpr;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
else
|
1992-03-02 09:55:31 +08:00
|
|
|
|
fdata->saved_fpr = -1;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
1992-03-02 09:55:31 +08:00
|
|
|
|
fdata->offset = tmp2;
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 0;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
1992-03-02 09:55:31 +08:00
|
|
|
|
|
|
|
|
|
while (((tmp = op >> 16) == 0x9001) || /* st r0, NUM(r1) */
|
|
|
|
|
(tmp == 0x9421) || /* stu r1, NUM(r1) */
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
(tmp == 0x93e1)) /* st r31, NUM(r1) */
|
1992-03-02 09:55:31 +08:00
|
|
|
|
{
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
int tmp2;
|
|
|
|
|
|
1992-03-02 09:55:31 +08:00
|
|
|
|
/* gcc takes a short cut and uses this instruction to save r31 only. */
|
|
|
|
|
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
if (tmp == 0x93e1) {
|
1992-03-02 09:55:31 +08:00
|
|
|
|
if (fdata->offset)
|
|
|
|
|
/* fatal ("Unrecognized prolog."); */
|
|
|
|
|
printf ("Unrecognized prolog!\n");
|
|
|
|
|
|
|
|
|
|
fdata->saved_gpr = 31;
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
tmp2 = op & 0xffff;
|
|
|
|
|
if (tmp2 > 0x7fff) {
|
|
|
|
|
tmp2 = - ((~0 &~ 0xffff) | tmp2);
|
|
|
|
|
fdata->saved_fpr = (tmp2 - ((32 - 31) * 4)) / 8;
|
|
|
|
|
if ( fdata->saved_fpr > 0)
|
|
|
|
|
fdata->saved_fpr = 32 - fdata->saved_fpr;
|
|
|
|
|
else
|
|
|
|
|
fdata->saved_fpr = -1;
|
|
|
|
|
}
|
|
|
|
|
fdata->offset = tmp2;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
}
|
|
|
|
|
pc += 4;
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 0;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
while ((tmp = (op >> 22)) == 0x20f) { /* l r31, ... or */
|
|
|
|
|
pc += 4; /* l r30, ... */
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 0;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* store parameters into stack */
|
|
|
|
|
while(
|
|
|
|
|
(op & 0xfc1f0000) == 0xd8010000 || /* stfd Rx,NUM(r1) */
|
|
|
|
|
(op & 0xfc1f0000) == 0x90010000 || /* st r?, NUM(r1) */
|
|
|
|
|
(op & 0xfc000000) == 0xfc000000 || /* frsp, fp?, .. */
|
|
|
|
|
(op & 0xd0000000) == 0xd0000000) /* stfs, fp?, .. */
|
|
|
|
|
{
|
|
|
|
|
pc += 4; /* store fpr double */
|
|
|
|
|
op = read_memory_integer (pc, 4);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 0;
|
1992-03-02 09:55:31 +08:00
|
|
|
|
}
|
|
|
|
|
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
if (op == 0x603f0000) { /* oril r31, r1, 0x0 */
|
1992-03-02 09:55:31 +08:00
|
|
|
|
fdata->alloca_reg = 31;
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
fdata->frameless = 0;
|
|
|
|
|
}
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Pass the arguments in either registers, or in the stack. In RS6000, the first
|
|
|
|
|
eight words of the argument list (that might be less than eight parameters if
|
|
|
|
|
some parameters occupy more than one word) are passed in r3..r11 registers.
|
|
|
|
|
float and double parameters are passed in fpr's, in addition to that. Rest of
|
|
|
|
|
the parameters if any are passed in user stack. There might be cases in which
|
|
|
|
|
half of the parameter is copied into registers, the other half is pushed into
|
|
|
|
|
stack.
|
|
|
|
|
|
|
|
|
|
If the function is returning a structure, then the return address is passed
|
|
|
|
|
in r3, then the first 7 words of the parametes can be passed in registers,
|
|
|
|
|
starting from r4. */
|
|
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
|
push_arguments (nargs, args, sp, struct_return, struct_addr)
|
|
|
|
|
int nargs;
|
|
|
|
|
value *args;
|
|
|
|
|
CORE_ADDR sp;
|
|
|
|
|
int struct_return;
|
|
|
|
|
CORE_ADDR struct_addr;
|
|
|
|
|
{
|
|
|
|
|
int ii, len;
|
|
|
|
|
int argno; /* current argument number */
|
|
|
|
|
int argbytes; /* current argument byte */
|
|
|
|
|
char tmp_buffer [50];
|
|
|
|
|
value arg;
|
|
|
|
|
int f_argno = 0; /* current floating point argno */
|
|
|
|
|
|
|
|
|
|
CORE_ADDR saved_sp, pc;
|
|
|
|
|
|
|
|
|
|
if ( dummy_frame_count <= 0)
|
|
|
|
|
printf ("FATAL ERROR -push_arguments()! frame not found!!\n");
|
|
|
|
|
|
|
|
|
|
/* The first eight words of ther arguments are passed in registers. Copy
|
|
|
|
|
them appropriately.
|
|
|
|
|
|
|
|
|
|
If the function is returning a `struct', then the first word (which
|
|
|
|
|
will be passed in r3) is used for struct return address. In that
|
|
|
|
|
case we should advance one word and start from r4 register to copy
|
|
|
|
|
parameters. */
|
|
|
|
|
|
|
|
|
|
ii = struct_return ? 1 : 0;
|
|
|
|
|
|
|
|
|
|
for (argno=0, argbytes=0; argno < nargs && ii<8; ++ii) {
|
|
|
|
|
|
|
|
|
|
arg = value_arg_coerce (args[argno]);
|
|
|
|
|
len = TYPE_LENGTH (VALUE_TYPE (arg));
|
|
|
|
|
|
|
|
|
|
if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_FLT) {
|
|
|
|
|
|
|
|
|
|
/* floating point arguments are passed in fpr's, as well as gpr's.
|
|
|
|
|
There are 13 fpr's reserved for passing parameters. At this point
|
|
|
|
|
there is no way we would run out of them. */
|
|
|
|
|
|
|
|
|
|
if (len > 8)
|
|
|
|
|
printf (
|
|
|
|
|
"Fatal Error: a floating point parameter #%d with a size > 8 is found!\n", argno);
|
|
|
|
|
|
|
|
|
|
bcopy (VALUE_CONTENTS (arg),
|
|
|
|
|
®isters[REGISTER_BYTE(FP0_REGNUM + 1 + f_argno)], len);
|
|
|
|
|
++f_argno;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (len > 4) {
|
|
|
|
|
|
|
|
|
|
/* Argument takes more than one register. */
|
|
|
|
|
while (argbytes < len) {
|
|
|
|
|
|
|
|
|
|
*(int*)®isters[REGISTER_BYTE(ii+3)] = 0;
|
|
|
|
|
bcopy ( ((char*)VALUE_CONTENTS (arg))+argbytes,
|
|
|
|
|
®isters[REGISTER_BYTE(ii+3)],
|
|
|
|
|
(len - argbytes) > 4 ? 4 : len - argbytes);
|
|
|
|
|
++ii, argbytes += 4;
|
|
|
|
|
|
|
|
|
|
if (ii >= 8)
|
|
|
|
|
goto ran_out_of_registers_for_arguments;
|
|
|
|
|
}
|
|
|
|
|
argbytes = 0;
|
|
|
|
|
--ii;
|
|
|
|
|
}
|
|
|
|
|
else { /* Argument can fit in one register. No problem. */
|
|
|
|
|
*(int*)®isters[REGISTER_BYTE(ii+3)] = 0;
|
|
|
|
|
bcopy (VALUE_CONTENTS (arg), ®isters[REGISTER_BYTE(ii+3)], len);
|
|
|
|
|
}
|
|
|
|
|
++argno;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ran_out_of_registers_for_arguments:
|
|
|
|
|
|
|
|
|
|
/* location for 8 parameters are always reserved. */
|
|
|
|
|
sp -= 4 * 8;
|
|
|
|
|
|
|
|
|
|
/* another six words for back chain, TOC register, link register, etc. */
|
|
|
|
|
sp -= 24;
|
|
|
|
|
|
|
|
|
|
/* if there are more arguments, allocate space for them in
|
|
|
|
|
the stack, then push them starting from the ninth one. */
|
|
|
|
|
|
|
|
|
|
if ((argno < nargs) || argbytes) {
|
|
|
|
|
int space = 0, jj;
|
|
|
|
|
value val;
|
|
|
|
|
|
|
|
|
|
if (argbytes) {
|
|
|
|
|
space += ((len - argbytes + 3) & -4);
|
|
|
|
|
jj = argno + 1;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
jj = argno;
|
|
|
|
|
|
|
|
|
|
for (; jj < nargs; ++jj) {
|
|
|
|
|
val = value_arg_coerce (args[jj]);
|
|
|
|
|
space += ((TYPE_LENGTH (VALUE_TYPE (val))) + 3) & -4;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* add location required for the rest of the parameters */
|
|
|
|
|
space = (space + 7) & -8;
|
|
|
|
|
sp -= space;
|
|
|
|
|
|
|
|
|
|
/* This is another instance we need to be concerned about securing our
|
|
|
|
|
stack space. If we write anything underneath %sp (r1), we might conflict
|
|
|
|
|
with the kernel who thinks he is free to use this area. So, update %sp
|
|
|
|
|
first before doing anything else. */
|
|
|
|
|
|
|
|
|
|
write_register (SP_REGNUM, sp);
|
|
|
|
|
|
|
|
|
|
/* if the last argument copied into the registers didn't fit there
|
|
|
|
|
completely, push the rest of it into stack. */
|
|
|
|
|
|
|
|
|
|
if (argbytes) {
|
|
|
|
|
write_memory (
|
|
|
|
|
sp+24+(ii*4), ((char*)VALUE_CONTENTS (arg))+argbytes, len - argbytes);
|
|
|
|
|
++argno;
|
|
|
|
|
ii += ((len - argbytes + 3) & -4) / 4;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* push the rest of the arguments into stack. */
|
|
|
|
|
for (; argno < nargs; ++argno) {
|
|
|
|
|
|
|
|
|
|
arg = value_arg_coerce (args[argno]);
|
|
|
|
|
len = TYPE_LENGTH (VALUE_TYPE (arg));
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* float types should be passed in fpr's, as well as in the stack. */
|
|
|
|
|
if (TYPE_CODE (VALUE_TYPE (arg)) == TYPE_CODE_FLT && f_argno < 13) {
|
|
|
|
|
|
|
|
|
|
if (len > 8)
|
|
|
|
|
printf (
|
|
|
|
|
"Fatal Error: a floating point parameter #%d with a size > 8 is found!\n", argno);
|
|
|
|
|
|
|
|
|
|
bcopy (VALUE_CONTENTS (arg),
|
|
|
|
|
®isters[REGISTER_BYTE(FP0_REGNUM + 1 + f_argno)], len);
|
|
|
|
|
++f_argno;
|
|
|
|
|
}
|
|
|
|
|
|
1993-03-31 07:06:29 +08:00
|
|
|
|
write_memory (sp+24+(ii*4), (char *) VALUE_CONTENTS (arg), len);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
ii += ((len + 3) & -4) / 4;
|
|
|
|
|
}
|
|
|
|
|
}
|
1992-03-02 09:55:31 +08:00
|
|
|
|
else
|
1991-11-12 23:50:47 +08:00
|
|
|
|
/* Secure stack areas first, before doing anything else. */
|
|
|
|
|
write_register (SP_REGNUM, sp);
|
|
|
|
|
|
|
|
|
|
saved_sp = dummy_frame_addr [dummy_frame_count - 1];
|
|
|
|
|
read_memory (saved_sp, tmp_buffer, 24);
|
|
|
|
|
write_memory (sp, tmp_buffer, 24);
|
|
|
|
|
|
|
|
|
|
write_memory (sp, &saved_sp, 4); /* set back chain properly */
|
|
|
|
|
|
1992-09-19 20:08:23 +08:00
|
|
|
|
target_store_registers (-1);
|
1991-11-12 23:50:47 +08:00
|
|
|
|
return sp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* a given return value in `regbuf' with a type `valtype', extract and copy its
|
|
|
|
|
value into `valbuf' */
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
void
|
1991-11-12 23:50:47 +08:00
|
|
|
|
extract_return_value (valtype, regbuf, valbuf)
|
|
|
|
|
struct type *valtype;
|
|
|
|
|
char regbuf[REGISTER_BYTES];
|
|
|
|
|
char *valbuf;
|
|
|
|
|
{
|
|
|
|
|
|
|
|
|
|
if (TYPE_CODE (valtype) == TYPE_CODE_FLT) {
|
|
|
|
|
|
|
|
|
|
double dd; float ff;
|
|
|
|
|
/* floats and doubles are returned in fpr1. fpr's have a size of 8 bytes.
|
|
|
|
|
We need to truncate the return value into float size (4 byte) if
|
|
|
|
|
necessary. */
|
|
|
|
|
|
|
|
|
|
if (TYPE_LENGTH (valtype) > 4) /* this is a double */
|
|
|
|
|
bcopy (®buf[REGISTER_BYTE (FP0_REGNUM + 1)], valbuf,
|
|
|
|
|
TYPE_LENGTH (valtype));
|
|
|
|
|
else { /* float */
|
|
|
|
|
bcopy (®buf[REGISTER_BYTE (FP0_REGNUM + 1)], &dd, 8);
|
|
|
|
|
ff = (float)dd;
|
|
|
|
|
bcopy (&ff, valbuf, sizeof(float));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
/* return value is copied starting from r3. */
|
|
|
|
|
bcopy (®buf[REGISTER_BYTE (3)], valbuf, TYPE_LENGTH (valtype));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
/* keep structure return address in this variable.
|
|
|
|
|
FIXME: This is a horrid kludge which should not be allowed to continue
|
|
|
|
|
living. This only allows a single nested call to a structure-returning
|
|
|
|
|
function. Come on, guys! -- gnu@cygnus.com, Aug 92 */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
|
|
|
|
CORE_ADDR rs6000_struct_return_address;
|
|
|
|
|
|
|
|
|
|
|
1992-03-28 07:56:15 +08:00
|
|
|
|
/* Indirect function calls use a piece of trampoline code to do context
|
|
|
|
|
switching, i.e. to set the new TOC table. Skip such code if we are on
|
|
|
|
|
its first instruction (as when we have single-stepped to here).
|
|
|
|
|
Result is desired PC to step until, or NULL if we are not in
|
|
|
|
|
trampoline code. */
|
1991-11-12 23:50:47 +08:00
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
CORE_ADDR
|
1991-11-12 23:50:47 +08:00
|
|
|
|
skip_trampoline_code (pc)
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
CORE_ADDR pc;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
{
|
|
|
|
|
register unsigned int ii, op;
|
|
|
|
|
|
|
|
|
|
static unsigned trampoline_code[] = {
|
|
|
|
|
0x800b0000, /* l r0,0x0(r11) */
|
|
|
|
|
0x90410014, /* st r2,0x14(r1) */
|
|
|
|
|
0x7c0903a6, /* mtctr r0 */
|
|
|
|
|
0x804b0004, /* l r2,0x4(r11) */
|
|
|
|
|
0x816b0008, /* l r11,0x8(r11) */
|
|
|
|
|
0x4e800420, /* bctr */
|
|
|
|
|
0x4e800020, /* br */
|
|
|
|
|
0
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
for (ii=0; trampoline_code[ii]; ++ii) {
|
|
|
|
|
op = read_memory_integer (pc + (ii*4), 4);
|
|
|
|
|
if (op != trampoline_code [ii])
|
1993-03-31 07:06:29 +08:00
|
|
|
|
return 0;
|
1991-11-12 23:50:47 +08:00
|
|
|
|
}
|
|
|
|
|
ii = read_register (11); /* r11 holds destination addr */
|
|
|
|
|
pc = read_memory_integer (ii, 4); /* (r11) value */
|
|
|
|
|
return pc;
|
|
|
|
|
}
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
|
|
|
|
|
/* Determines whether the function FI has a frame on the stack or not.
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
Called from the FRAMELESS_FUNCTION_INVOCATION macro in tm.h with a
|
|
|
|
|
second argument of 0, and from the FRAME_SAVED_PC macro with a
|
|
|
|
|
second argument of 1. */
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
|
|
|
|
|
int
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
frameless_function_invocation (fi, pcsaved)
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
struct frame_info *fi;
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
int pcsaved;
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
{
|
|
|
|
|
CORE_ADDR func_start;
|
|
|
|
|
struct aix_framedata fdata;
|
|
|
|
|
|
1993-04-03 04:28:52 +08:00
|
|
|
|
if (fi->next != NULL)
|
|
|
|
|
/* Don't even think about framelessness except on the innermost frame. */
|
|
|
|
|
return 0;
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
func_start = get_pc_function_start (fi->pc) + FUNCTION_START_OFFSET;
|
|
|
|
|
|
|
|
|
|
/* If we failed to find the start of the function, it is a mistake
|
|
|
|
|
to inspect the instructions. */
|
|
|
|
|
|
|
|
|
|
if (!func_start)
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
function_frame_info (func_start, &fdata);
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
return pcsaved ? fdata.nosavedpc : fdata.frameless;
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* If saved registers of frame FI are not known yet, read and cache them.
|
|
|
|
|
&FDATAP contains aix_framedata; TDATAP can be NULL,
|
|
|
|
|
in which case the framedata are read. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
frame_get_cache_fsr (fi, fdatap)
|
|
|
|
|
struct frame_info *fi;
|
|
|
|
|
struct aix_framedata *fdatap;
|
|
|
|
|
{
|
|
|
|
|
int ii;
|
|
|
|
|
CORE_ADDR frame_addr;
|
|
|
|
|
struct aix_framedata work_fdata;
|
|
|
|
|
|
|
|
|
|
if (fi->cache_fsr)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
if (fdatap == NULL) {
|
|
|
|
|
fdatap = &work_fdata;
|
|
|
|
|
function_frame_info (get_pc_function_start (fi->pc), fdatap);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fi->cache_fsr = (struct frame_saved_regs *)
|
|
|
|
|
obstack_alloc (&frame_cache_obstack, sizeof (struct frame_saved_regs));
|
|
|
|
|
bzero (fi->cache_fsr, sizeof (struct frame_saved_regs));
|
|
|
|
|
|
|
|
|
|
if (fi->prev && fi->prev->frame)
|
|
|
|
|
frame_addr = fi->prev->frame;
|
|
|
|
|
else
|
|
|
|
|
frame_addr = read_memory_integer (fi->frame, 4);
|
|
|
|
|
|
|
|
|
|
/* if != -1, fdatap->saved_fpr is the smallest number of saved_fpr.
|
|
|
|
|
All fpr's from saved_fpr to fp31 are saved right underneath caller
|
|
|
|
|
stack pointer, starting from fp31 first. */
|
|
|
|
|
|
|
|
|
|
if (fdatap->saved_fpr >= 0) {
|
|
|
|
|
for (ii=31; ii >= fdatap->saved_fpr; --ii)
|
|
|
|
|
fi->cache_fsr->regs [FP0_REGNUM + ii] = frame_addr - ((32 - ii) * 8);
|
|
|
|
|
frame_addr -= (32 - fdatap->saved_fpr) * 8;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* if != -1, fdatap->saved_gpr is the smallest number of saved_gpr.
|
|
|
|
|
All gpr's from saved_gpr to gpr31 are saved right under saved fprs,
|
|
|
|
|
starting from r31 first. */
|
|
|
|
|
|
|
|
|
|
if (fdatap->saved_gpr >= 0)
|
|
|
|
|
for (ii=31; ii >= fdatap->saved_gpr; --ii)
|
|
|
|
|
fi->cache_fsr->regs [ii] = frame_addr - ((32 - ii) * 4);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return the address of a frame. This is the inital %sp value when the frame
|
|
|
|
|
was first allocated. For functions calling alloca(), it might be saved in
|
|
|
|
|
an alloca register. */
|
|
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
|
frame_initial_stack_address (fi)
|
|
|
|
|
struct frame_info *fi;
|
|
|
|
|
{
|
|
|
|
|
CORE_ADDR tmpaddr;
|
|
|
|
|
struct aix_framedata fdata;
|
|
|
|
|
struct frame_info *callee_fi;
|
|
|
|
|
|
|
|
|
|
/* if the initial stack pointer (frame address) of this frame is known,
|
|
|
|
|
just return it. */
|
|
|
|
|
|
|
|
|
|
if (fi->initial_sp)
|
|
|
|
|
return fi->initial_sp;
|
|
|
|
|
|
|
|
|
|
/* find out if this function is using an alloca register.. */
|
|
|
|
|
|
|
|
|
|
function_frame_info (get_pc_function_start (fi->pc), &fdata);
|
|
|
|
|
|
|
|
|
|
/* if saved registers of this frame are not known yet, read and cache them. */
|
|
|
|
|
|
|
|
|
|
if (!fi->cache_fsr)
|
|
|
|
|
frame_get_cache_fsr (fi, &fdata);
|
|
|
|
|
|
|
|
|
|
/* If no alloca register used, then fi->frame is the value of the %sp for
|
|
|
|
|
this frame, and it is good enough. */
|
|
|
|
|
|
|
|
|
|
if (fdata.alloca_reg < 0) {
|
|
|
|
|
fi->initial_sp = fi->frame;
|
|
|
|
|
return fi->initial_sp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* This function has an alloca register. If this is the top-most frame
|
|
|
|
|
(with the lowest address), the value in alloca register is good. */
|
|
|
|
|
|
|
|
|
|
if (!fi->next)
|
|
|
|
|
return fi->initial_sp = read_register (fdata.alloca_reg);
|
|
|
|
|
|
|
|
|
|
/* Otherwise, this is a caller frame. Callee has usually already saved
|
|
|
|
|
registers, but there are exceptions (such as when the callee
|
|
|
|
|
has no parameters). Find the address in which caller's alloca
|
|
|
|
|
register is saved. */
|
|
|
|
|
|
|
|
|
|
for (callee_fi = fi->next; callee_fi; callee_fi = callee_fi->next) {
|
|
|
|
|
|
|
|
|
|
if (!callee_fi->cache_fsr)
|
Tue Nov 17 11:17:06 1992 Ian Lance Taylor (ian@cygnus.com)
* tm-rs6000.h (BELIEVE_PCC_PROMOTION): Define, since AIX cc gets
it right.
(aix_framedata): added nosavedpc field.
(SAVED_PC_AFTER_CALL): Don't try to optimize; just call
read_register.
(FRAMELESS_FUNCTION_INVOCATION): Pass second argument of 0.
(FRAME_SAVED_PC): If PC not saved, use SAVED_PC_AFTER_CALL.
* rs6000-tdep.c (skip_prologue): Handle gcc generated stfd
instructions as function_frame_info does. Expand special case of
st r31,-4(r1) to be st r31,NUM(r1), since gcc can generate offsets
other than -4.
(pop_frame): Add 4 rather than sizeof (int) to avoid host
dependence.
(function_frame_info): Set frameless if the function has no frame,
and set nosavedpc if the PC was not saved. Handle gcc generated
stfd 31,-4(31); st 31, -12(31) correctly.
(frameless_function_invocation): New second argument pcsaved; if 0
return whether the function has a frame, if 1 return whether the
function saved PC.
(frame_initial_stack_address): Correct typo: cache registers for
callee_fi, not for fi, (avoids reading garbage memory locations).
1992-11-18 05:46:17 +08:00
|
|
|
|
frame_get_cache_fsr (callee_fi, NULL);
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
|
|
|
|
|
/* this is the address in which alloca register is saved. */
|
|
|
|
|
|
|
|
|
|
tmpaddr = callee_fi->cache_fsr->regs [fdata.alloca_reg];
|
|
|
|
|
if (tmpaddr) {
|
|
|
|
|
fi->initial_sp = read_memory_integer (tmpaddr, 4);
|
|
|
|
|
return fi->initial_sp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Go look into deeper levels of the frame chain to see if any one of
|
|
|
|
|
the callees has saved alloca register. */
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* If alloca register was not saved, by the callee (or any of its callees)
|
|
|
|
|
then the value in the register is still good. */
|
|
|
|
|
|
|
|
|
|
return fi->initial_sp = read_register (fdata.alloca_reg);
|
|
|
|
|
}
|
|
|
|
|
|
1993-04-13 14:15:14 +08:00
|
|
|
|
FRAME_ADDR
|
|
|
|
|
rs6000_frame_chain (thisframe)
|
|
|
|
|
struct frame_info *thisframe;
|
|
|
|
|
{
|
|
|
|
|
FRAME_ADDR fp;
|
|
|
|
|
if (inside_entry_file ((thisframe)->pc))
|
|
|
|
|
return 0;
|
1993-04-21 02:02:54 +08:00
|
|
|
|
if (thisframe->signal_handler_caller)
|
1993-04-13 14:15:14 +08:00
|
|
|
|
{
|
|
|
|
|
/* This was determined by experimentation on AIX 3.2. Perhaps
|
|
|
|
|
it corresponds to some offset in /usr/include/sys/user.h or
|
|
|
|
|
something like that. Using some system include file would
|
|
|
|
|
have the advantage of probably being more robust in the face
|
|
|
|
|
of OS upgrades, but the disadvantage of being wrong for
|
|
|
|
|
cross-debugging. */
|
|
|
|
|
|
|
|
|
|
#define SIG_FRAME_FP_OFFSET 284
|
|
|
|
|
fp = read_memory_integer (thisframe->frame + SIG_FRAME_FP_OFFSET, 4);
|
|
|
|
|
}
|
1993-04-21 02:02:54 +08:00
|
|
|
|
else
|
|
|
|
|
fp = read_memory_integer ((thisframe)->frame, 4);
|
|
|
|
|
|
1993-04-13 14:15:14 +08:00
|
|
|
|
return fp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
/* xcoff_relocate_symtab - hook for symbol table relocation.
|
|
|
|
|
also reads shared libraries.. */
|
|
|
|
|
|
|
|
|
|
xcoff_relocate_symtab (pid)
|
|
|
|
|
unsigned int pid;
|
|
|
|
|
{
|
|
|
|
|
#define MAX_LOAD_SEGS 64 /* maximum number of load segments */
|
|
|
|
|
|
|
|
|
|
struct ld_info *ldi;
|
|
|
|
|
int temp;
|
|
|
|
|
|
|
|
|
|
ldi = (void *) alloca(MAX_LOAD_SEGS * sizeof (*ldi));
|
|
|
|
|
|
|
|
|
|
/* According to my humble theory, AIX has some timing problems and
|
|
|
|
|
when the user stack grows, kernel doesn't update stack info in time
|
|
|
|
|
and ptrace calls step on user stack. That is why we sleep here a little,
|
|
|
|
|
and give kernel to update its internals. */
|
|
|
|
|
|
|
|
|
|
usleep (36000);
|
|
|
|
|
|
|
|
|
|
errno = 0;
|
|
|
|
|
ptrace(PT_LDINFO, pid, (PTRACE_ARG3_TYPE) ldi,
|
|
|
|
|
MAX_LOAD_SEGS * sizeof(*ldi), ldi);
|
|
|
|
|
if (errno) {
|
|
|
|
|
perror_with_name ("ptrace ldinfo");
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
vmap_ldinfo(ldi);
|
|
|
|
|
|
|
|
|
|
do {
|
1993-03-31 07:06:29 +08:00
|
|
|
|
/* We are allowed to assume CORE_ADDR == pointer. This code is
|
|
|
|
|
native only. */
|
|
|
|
|
add_text_to_loadinfo ((CORE_ADDR) ldi->ldinfo_textorg,
|
|
|
|
|
(CORE_ADDR) ldi->ldinfo_dataorg);
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
} while (ldi->ldinfo_next
|
|
|
|
|
&& (ldi = (void *) (ldi->ldinfo_next + (char *) ldi)));
|
|
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
|
/* Now that we've jumbled things around, re-sort them. */
|
|
|
|
|
sort_minimal_symbols ();
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* relocate the exec and core sections as well. */
|
|
|
|
|
vmap_exec ();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Keep an array of load segment information and their TOC table addresses.
|
|
|
|
|
This info will be useful when calling a shared library function by hand. */
|
|
|
|
|
|
|
|
|
|
struct loadinfo {
|
|
|
|
|
CORE_ADDR textorg, dataorg;
|
|
|
|
|
unsigned long toc_offset;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define LOADINFOLEN 10
|
|
|
|
|
|
|
|
|
|
static struct loadinfo *loadinfo = NULL;
|
|
|
|
|
static int loadinfolen = 0;
|
|
|
|
|
static int loadinfotocindex = 0;
|
1993-03-26 22:59:43 +08:00
|
|
|
|
static int loadinfotextindex = 0;
|
RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
xcoff_init_loadinfo ()
|
|
|
|
|
{
|
|
|
|
|
loadinfotocindex = 0;
|
|
|
|
|
loadinfotextindex = 0;
|
|
|
|
|
|
|
|
|
|
if (loadinfolen == 0) {
|
|
|
|
|
loadinfo = (struct loadinfo *)
|
|
|
|
|
xmalloc (sizeof (struct loadinfo) * LOADINFOLEN);
|
|
|
|
|
loadinfolen = LOADINFOLEN;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* FIXME -- this is never called! */
|
|
|
|
|
void
|
|
|
|
|
free_loadinfo ()
|
|
|
|
|
{
|
|
|
|
|
if (loadinfo)
|
|
|
|
|
free (loadinfo);
|
|
|
|
|
loadinfo = NULL;
|
|
|
|
|
loadinfolen = 0;
|
|
|
|
|
loadinfotocindex = 0;
|
|
|
|
|
loadinfotextindex = 0;
|
|
|
|
|
}
|
|
|
|
|
|
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/* this is called from xcoffread.c */
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void
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xcoff_add_toc_to_loadinfo (unsigned long tocoff)
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{
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while (loadinfotocindex >= loadinfolen) {
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loadinfolen += LOADINFOLEN;
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loadinfo = (struct loadinfo *)
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xrealloc (loadinfo, sizeof(struct loadinfo) * loadinfolen);
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}
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loadinfo [loadinfotocindex++].toc_offset = tocoff;
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}
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1993-03-13 07:12:59 +08:00
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void
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RS/6000 portability changes (for hosting cross-debuggers).
* breakpoint.c (fixup_breakpoints): Re-kludge to IBM6000_TARGET.
* buildsym.c, rs6000-xdep.c, rs6000-tdep.c, tm-rs6000.h,
xcoffexec.c, xcoffread.c: Rename aixcoff to xcoff everywhere.
* printcmd.c (print_frame_args): Remove an RS/6000 dependency.
* stabsread.c (define_symbol): Remove RS/6000 dependencies.
* tm-rs6000.h (ATTACH_DETACH): Remove: host-dependent.
(PTRACE_ATTACH, PTRACE_DETACH): Remove: host-dep.
(NO_SINGLE_STEP): Add, target-dependent.
(loadinfotextindex): Lowercase, remove "aix_".
* xm-rs6000.h: Add <sys/ptrace.h> for infptrace.c.
(NO_SINGLE_STEP): Remove, target-dependent.
* xcoffexec.c (vmap_symtab): Cleanup #if 0'd code.
* xcoffread.c: Only build file if RS/6000 native GDB.
(build_function_symbol): Remove #if 0'd code.
* rs6000-tdep.c: Cleanup. Add static fn protos.
Use CORE_ADDR for addresses throughout. Make void fns void.
(pop_dummy_frame): Add FIXME about bogosity of design here.
(rs6000_struct_return_address): Ditto.
(frameless_function_invocation, frame_get_cache_fsr,
frame_initial_stack_address, xcoff_relocate_symtab,
xcoff_init_loadinfo, free_loadinfo, xcoff_add_toc_to_loadinfo,
add_text_to_loadinfo, find_toc_address): Move from xdep file.
Use CORE_ADDRs. Change identifiers to lowercase.
* rs6000-xdep.c: Make whole file conditional on native RS/6000,
supplying dummy routines if non-native. Add prototype for
static exec_one_dummy_insn. Move a mess of functions to
rs6000-tdep.c (as above). Remove #if 0'd code.
* config/rs6000.mh (XDEPFILES): Move xcoffexec.o to target side.
(XM_CLIBS): Add -lm to circumvent AIX 3.2 libc ldexp bug.
* config/rs6000.mt (TDEPFILES): Adopt xcoffexec.o.
* gdbtypes.h (TYPE_ALLOC): Parenthesize result to avoid problems
for callers.
1992-08-29 08:28:56 +08:00
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add_text_to_loadinfo (textaddr, dataaddr)
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CORE_ADDR textaddr;
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CORE_ADDR dataaddr;
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{
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while (loadinfotextindex >= loadinfolen) {
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loadinfolen += LOADINFOLEN;
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loadinfo = (struct loadinfo *)
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xrealloc (loadinfo, sizeof(struct loadinfo) * loadinfolen);
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}
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loadinfo [loadinfotextindex].textorg = textaddr;
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loadinfo [loadinfotextindex].dataorg = dataaddr;
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++loadinfotextindex;
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}
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/* FIXME: This assumes that the "textorg" and "dataorg" elements
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of a member of this array are correlated with the "toc_offset"
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element of the same member. But they are sequentially assigned in wildly
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different places, and probably there is no correlation. FIXME! */
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static CORE_ADDR
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find_toc_address (pc)
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CORE_ADDR pc;
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{
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int ii, toc_entry, tocbase = 0;
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for (ii=0; ii < loadinfotextindex; ++ii)
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if (pc > loadinfo[ii].textorg && loadinfo[ii].textorg > tocbase) {
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toc_entry = ii;
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tocbase = loadinfo[ii].textorg;
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}
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return loadinfo[toc_entry].dataorg + loadinfo[toc_entry].toc_offset;
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}
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