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2004-02-23 David Mosberger <davidm@hpl.hp.com>

Browse source 
Committed by Kevin Buettner <kevinb@redhat.com>.

	* ia64-tdep.h (ia64_write_pc, ia64_linux_write_pc): Declare.
	* ia64-tdep.c (ia64_write_pc): Make it a global function.
	(ia64_gdbarch_init): For Linux targets, use ia64_linux_write_pc()
	instead of ia64_write_pc().
	* ia64-linux-tdep.c (regcache.h): Include.
	(ia64_linux_write_pc): New function.
This commit is contained in:
Kevin Buettner 2004-02-24 22:35:01 +00:00
parent 9b1f5ff99b
commit 54a5c8d8da
4 changed files with 37 additions and 2 deletions
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12
gdb/ChangeLog
View file

@ -1,3 +1,14 @@
2004-02-23 David Mosberger <davidm@hpl.hp.com>
Committed by Kevin Buettner <kevinb@redhat.com>.
* ia64-tdep.h (ia64_write_pc, ia64_linux_write_pc): Declare.
* ia64-tdep.c (ia64_write_pc): Make it a global function.
(ia64_gdbarch_init): For Linux targets, use ia64_linux_write_pc()
instead of ia64_write_pc().
* ia64-linux-tdep.c (regcache.h): Include.
(ia64_linux_write_pc): New function.
2004-02-23 Roland McGrath <roland@redhat.com>
* auxv.c (info_auxv_command): Fix typos in error messages.
@ -59,6 +70,7 @@
* breakpoint.c (print_one_breakpoint): Do not output spaces
after printing <PENDING> for a pending breakpoint.
>>>>>>> 1.5456
2004-02-23 Jeff Johnston <jjohnstn@redhat.com>
* printcmd.c (print_scalar_formatted): Initialize val_long

18
gdb/ia64-linux-tdep.c
View file

@ -23,6 +23,7 @@
#include "ia64-tdep.h"
#include "arch-utils.h"
#include "gdbcore.h"
#include "regcache.h"
/* The sigtramp code is in a non-readable (executable-only) region
of memory called the ``gate page''. The addresses in question
@ -94,3 +95,20 @@ ia64_linux_sigcontext_register_address (CORE_ADDR sp, int regno)
return 0;
}
}
void
ia64_linux_write_pc (CORE_ADDR pc, ptid_t ptid)
{
ia64_write_pc (pc, ptid);
/* We must be careful with modifying the instruction-pointer: if we
just interrupt a system call, the kernel would ordinarily try to
restart it when we resume the inferior, which typically results
in SIGSEGV or SIGILL. We prevent this by clearing r10, which
will tell the kernel that r8 does NOT contain a valid error code
and hence it will skip system-call restart.
The clearing of r10 is safe as long as ia64_write_pc() is only
called as part of setting up an inferior call. */
write_register_pid (IA64_GR10_REGNUM, 0, ptid);
}

7
gdb/ia64-tdep.c
View file

@ -628,7 +628,7 @@ ia64_read_pc (ptid_t ptid)
return pc_value | (slot_num * SLOT_MULTIPLIER);
}
static void
void
ia64_write_pc (CORE_ADDR new_pc, ptid_t ptid)
{
int slot_num = (int) (new_pc & 0xf) / SLOT_MULTIPLIER;
@ -3338,7 +3338,10 @@ ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_memory_remove_breakpoint (gdbarch, ia64_memory_remove_breakpoint);
set_gdbarch_breakpoint_from_pc (gdbarch, ia64_breakpoint_from_pc);
set_gdbarch_read_pc (gdbarch, ia64_read_pc);
set_gdbarch_write_pc (gdbarch, ia64_write_pc);
if (info.osabi == GDB_OSABI_LINUX)
set_gdbarch_write_pc (gdbarch, ia64_linux_write_pc);
else
set_gdbarch_write_pc (gdbarch, ia64_write_pc);
/* Settings for calling functions in the inferior. */
set_gdbarch_push_dummy_call (gdbarch, ia64_push_dummy_call);

2
gdb/ia64-tdep.h
View file

@ -25,5 +25,7 @@
extern CORE_ADDR ia64_linux_sigcontext_register_address (CORE_ADDR, int);
extern CORE_ADDR ia64_aix_sigcontext_register_address (CORE_ADDR, int);
extern unsigned long ia64_linux_getunwind_table (void *, size_t);
extern void ia64_write_pc (CORE_ADDR, ptid_t);
extern void ia64_linux_write_pc (CORE_ADDR, ptid_t);
#endif /* IA64_TDEP_H */