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Implement get_longjmp_target for tilegx. 

gdb/
      * tilegx-tdep.c (tilegx_get_longjmp_target): New function.
      (tilegx_gdbarch_init): Install it.
This commit is contained in:
Jiong Wang 2013-03-01 10:45:28 +00:00
parent c32f23033e
commit 61d8bd0e17
2 changed files with 29 additions and 0 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2013-02-27 Jiong Wang <jiwang@tilera.com>
* tilegx-tdep.c (tilegx_get_longjmp_target): New function.
(tilegx_gdbarch_init): Install it.
2013-02-28 Tom Tromey <tromey@redhat.com>
* python/py-arch.c (archpy_disassemble): Use PyInt_Check and

24
gdb/tilegx-tdep.c
View File

@ -785,6 +785,29 @@ tilegx_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
return 0;
}
/* This is the implementation of gdbarch method get_longjmp_target. */
static int
tilegx_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
{
struct gdbarch *gdbarch = get_frame_arch (frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR jb_addr;
gdb_byte buf[8];
jb_addr = get_frame_register_unsigned (frame, TILEGX_R0_REGNUM);
/* TileGX jmp_buf contains 32 elements of type __uint_reg_t which
has a size of 8 bytes. The return address is stored in the 25th
slot. */
if (target_read_memory (jb_addr + 25 * 8, buf, 8))
return 0;
*pc = extract_unsigned_integer (buf, 8, byte_order);
return 1;
}
/* by assigning the 'faultnum' reg in kernel pt_regs with this value,
kernel do_signal will not check r0. see tilegx kernel/signal.c
for details. */
@ -1030,6 +1053,7 @@ tilegx_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
/* These values and methods are used when gdb calls a target function. */
set_gdbarch_push_dummy_call (gdbarch, tilegx_push_dummy_call);
set_gdbarch_get_longjmp_target (gdbarch, tilegx_get_longjmp_target);
set_gdbarch_write_pc (gdbarch, tilegx_write_pc);
set_gdbarch_breakpoint_from_pc (gdbarch, tilegx_breakpoint_from_pc);
set_gdbarch_return_value (gdbarch, tilegx_return_value);