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AIX5 changes.

This commit is contained in:
Kevin Buettner 2000-11-08 04:12:40 +00:00
parent b3810801a5
commit 698cb3f077
2 changed files with 48 additions and 6 deletions
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13
gdb/ChangeLog
View File

@ -1,3 +1,16 @@
2000-11-07 Kevin Buettner <kevinb@redhat.com>
* ia64-tdep.c (native_find_global_pointer): New global variable.
(struct gdbarch_tdep): Add member find_global_pointer.
(ia64_gdbarch_init): Initialize find_global_pointer member. Also,
tell the gdbarch machinery that we have floating point registers.
(FIND_GLOBAL_POINTER): New macro.
(generic_elf_find_global_pointer): Renamed from find_global_pointer.
(find_func_descr, ia64_push_return_address): Call
FIND_GLOBAL_POINTER instead of find_global_pointer.
(process_note_abi_tag_sections): Enable code previously disabled
by #if 0.
2000-11-07 Daniel Berlin <dberlin@redhat.com>
* dwarf2read.c: Revert June 5th change for caching of types,

41
gdb/ia64-tdep.c
View File

@ -30,6 +30,19 @@
#include "elf/common.h" /* for DT_PLTGOT value */
#include "elf-bfd.h"
/* Hook for determining the global pointer when calling functions in
the inferior under AIX. The initialization code in ia64-aix-nat.c
sets this hook to the address of a function which will find the
global pointer for a given address.
The generic code which uses the dynamic section in the inferior for
finding the global pointer is not of much use on AIX since the
values obtained from the inferior have not been relocated. */
CORE_ADDR (*native_find_global_pointer) (CORE_ADDR) = 0;
/* An enumeration of the different IA-64 instruction types. */
typedef enum instruction_type
{
A, /* Integer ALU ; I-unit or M-unit */
@ -219,9 +232,13 @@ struct gdbarch_tdep
/* OS specific function which, given a frame address
and register number, returns the offset to the
given register from the start of the frame. */
CORE_ADDR (*find_global_pointer) (CORE_ADDR);
};
#define SIGCONTEXT_REGISTER_ADDRESS (gdbarch_tdep (current_gdbarch)->sigcontext_register_address)
#define SIGCONTEXT_REGISTER_ADDRESS \
(gdbarch_tdep (current_gdbarch)->sigcontext_register_address)
#define FIND_GLOBAL_POINTER \
(gdbarch_tdep (current_gdbarch)->find_global_pointer)
static char *
ia64_register_name (int reg)
@ -1470,7 +1487,7 @@ is_float_or_hfa_type (struct type *t)
d_un.d_ptr value is the global pointer. */
static CORE_ADDR
find_global_pointer (CORE_ADDR faddr)
generic_elf_find_global_pointer (CORE_ADDR faddr)
{
struct obj_section *faddr_sect;
@ -1591,7 +1608,7 @@ find_func_descr (CORE_ADDR faddr, CORE_ADDR *fdaptr)
fdesc = *fdaptr;
*fdaptr += 16;
global_pointer = find_global_pointer (faddr);
global_pointer = FIND_GLOBAL_POINTER (faddr);
if (global_pointer == 0)
global_pointer = read_register (IA64_GR1_REGNUM);
@ -1772,7 +1789,7 @@ ia64_push_arguments (int nargs, value_ptr *args, CORE_ADDR sp,
CORE_ADDR
ia64_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
CORE_ADDR global_pointer = find_global_pointer (pc);
CORE_ADDR global_pointer = FIND_GLOBAL_POINTER (pc);
if (global_pointer != 0)
write_register (IA64_GR1_REGNUM, global_pointer);
@ -1898,14 +1915,12 @@ process_note_abi_tag_sections (bfd *abfd, asection *sect, void *obj)
case 0 :
*os_ident_ptr = ELFOSABI_LINUX;
break;
#if 0 /* FIXME: Enable after internal repository is synced with sourceware */
case 1 :
*os_ident_ptr = ELFOSABI_HURD;
break;
case 2 :
*os_ident_ptr = ELFOSABI_SOLARIS;
break;
#endif
default :
internal_error (
"process_note_abi_sections: unknown OS number %d", os_number);
@ -1959,6 +1974,19 @@ ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
else
tdep->sigcontext_register_address = 0;
/* We know that Linux won't have to resort to the native_find_global_pointer
hackery. But that's the only one we know about so far, so if
native_find_global_pointer is set to something non-zero, then use
it. Otherwise fall back to using generic_elf_find_global_pointer.
This arrangement should (in theory) allow us to cross debug Linux
binaries from an AIX machine. */
if (os_ident == ELFOSABI_LINUX)
tdep->find_global_pointer = generic_elf_find_global_pointer;
else if (native_find_global_pointer != 0)
tdep->find_global_pointer = native_find_global_pointer;
else
tdep->find_global_pointer = generic_elf_find_global_pointer;
set_gdbarch_short_bit (gdbarch, 16);
set_gdbarch_int_bit (gdbarch, 32);
set_gdbarch_long_bit (gdbarch, 64);
@ -1972,6 +2000,7 @@ ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_sp_regnum (gdbarch, sp_regnum);
set_gdbarch_fp_regnum (gdbarch, fp_regnum);
set_gdbarch_pc_regnum (gdbarch, pc_regnum);
set_gdbarch_fp0_regnum (gdbarch, IA64_FR0_REGNUM);
set_gdbarch_register_name (gdbarch, ia64_register_name);
set_gdbarch_register_size (gdbarch, 8);