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* s390-tdep.c: Get frame chains and saved pc values properly from

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dummy frames.
(s390_frame_saved_pc_nofix): if `*fi' is a dummy frame, get the
saved PC from the dummy frame's registers.
(s390_frame_chain): Same for the saved SP.
(s390_gdbarch_init): Register `generic_save_dummy_frame_tos' as
the `SAVE_DUMMY_FRAME_TOS' method, so the dummy frame's `top' gets
set correctly.
This commit is contained in:
Jim Blandy
2001-11-28 03:40:50 +00:00
parent 31c4d430c4
commit 5c3cf190c0
2 changed files with 17 additions and 0 deletions
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8
gdb/s390-tdep.c
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@@ -884,6 +884,10 @@ s390_frame_saved_pc_nofix (struct frame_info *fi)
{
if (fi->extra_info && fi->extra_info->saved_pc_valid)
return fi->extra_info->saved_pc;
if (generic_find_dummy_frame (fi->pc, fi->frame))
return generic_read_register_dummy (fi->pc, fi->frame, S390_PC_REGNUM);
s390_frame_init_saved_regs (fi);
if (fi->extra_info)
{
@@ -937,6 +941,9 @@ s390_frame_chain (struct frame_info *thisframe)
if (thisframe->prev && thisframe->prev->frame)
prev_fp = thisframe->prev->frame;
else if (generic_find_dummy_frame (thisframe->pc, thisframe->frame))
return generic_read_register_dummy (thisframe->pc, thisframe->frame,
S390_SP_REGNUM);
else
{
int sigreturn = 0;
@@ -1743,6 +1750,7 @@ s390_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_at_entry_point);
set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
set_gdbarch_push_arguments (gdbarch, s390_push_arguments);
set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);