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* mips-tdep.c (mips_frame_chain): If frame size zero, return zero. 

* rs6000-tdep.c: Add comment about framelessness.
This commit is contained in:
Jim Kingdon 1993-09-23 19:03:38 +00:00
parent 6110df28cd
commit 3f528883ae
3 changed files with 10 additions and 1 deletions
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1
gdb/ChangeLog
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@ -47,6 +47,7 @@ Wed Sep 22 10:28:06 1993 Jim Kingdon (kingdon@lioth.cygnus.com)
retval.step_resume.
* mips-tdep.c (mips_frame_chain): If frame size zero, return zero.
* rs6000-tdep.c: Add comment about framelessness.
* remote-nindy.c: Declare ninMemGet and ninMemPut.

8
gdb/mips-tdep.c
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@ -346,7 +346,13 @@ mips_frame_chain(frame)
of stack (or otherwise hosed). If we don't check frame size,
we loop forever if we see a zero size frame. */
if (PROC_FRAME_REG (proc_desc) == SP_REGNUM
&& PROC_FRAME_OFFSET (proc_desc) == 0)
&& PROC_FRAME_OFFSET (proc_desc) == 0
/* Frameless functions, which can happen on the innermost frame
or a frame which was innermost when a signal happened, can
have frame size zero. No need to check for non-frameless
functions in these situations, though (I don't think). */
&& frame->next != NULL
&& !frame->next->signal_handler_caller)
return 0;
else
return read_next_frame_reg(frame, PROC_FRAME_REG(proc_desc))

2
gdb/rs6000-tdep.c
View File

@ -949,6 +949,8 @@ int pcsaved;
if (fi->next != NULL)
/* Don't even think about framelessness except on the innermost frame. */
/* FIXME: Can also be frameless if fi->next->signal_handler_caller (if
a signal happens while executing in a frameless function). */
return 0;
func_start = get_pc_function_start (fi->pc) + FUNCTION_START_OFFSET;