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Got backtrace working when calling from framefull routines into frameless

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routines.
This commit is contained in:
David Taylor 1997-12-21 14:07:46 +00:00
parent b9a8a96e54
commit cd44191e23
1 changed files with 77 additions and 6 deletions
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83
gdb/d30v-tdep.c
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@ -501,6 +501,59 @@ d30v_frame_find_saved_regs (fi, fsr)
frame_size = 0;
end_of_stack = 0;
uses_frame = 0;
d30v_frame_find_saved_regs_offsets (fi, fsr);
fi->size = frame_size;
if (!fp)
fp = read_register(SP_REGNUM);
for (i=0; i<NUM_REGS-1; i++)
if (fsr->regs[i])
{
fsr->regs[i] = fsr->regs[i] + fp + frame_size;
}
if (fsr->regs[LR_REGNUM])
fi->return_pc = read_memory_unsigned_integer(fsr->regs[LR_REGNUM],4);
else
fi->return_pc = read_register(LR_REGNUM);
/* the SP is not normally (ever?) saved, but check anyway */
if (!fsr->regs[SP_REGNUM])
{
/* if the FP was saved, that means the current FP is valid, */
/* otherwise, it isn't being used, so we use the SP instead */
if (uses_frame)
fsr->regs[SP_REGNUM] = read_register(FP_REGNUM) + fi->size;
else
{
fsr->regs[SP_REGNUM] = fp + fi->size;
fi->frameless = 1;
fsr->regs[FP_REGNUM] = 0;
}
}
}
void
d30v_frame_find_saved_regs_offsets (fi, fsr)
struct frame_info *fi;
struct frame_saved_regs *fsr;
{
CORE_ADDR fp, pc;
unsigned long opl, opr;
unsigned long op1, op2;
unsigned long fm0, fm1;
int i;
fp = fi->frame;
memset (fsr, 0, sizeof (*fsr));
next_addr = 0;
frame_size = 0;
end_of_stack = 0;
pc = get_pc_function_start (fi->pc);
uses_frame = 0;
@ -571,14 +624,12 @@ d30v_frame_find_saved_regs (fi, fsr)
pc += 8;
}
fi->size = frame_size;
#if 0
if (!fp || !uses_frame)
fp = read_register(SP_REGNUM);
#else
fi->size = frame_size;
if (!fp)
fp = read_register(SP_REGNUM);
#endif
for (i=0; i<NUM_REGS-1; i++)
if (fsr->regs[i])
{
@ -604,6 +655,7 @@ d30v_frame_find_saved_regs (fi, fsr)
fsr->regs[FP_REGNUM] = 0;
}
}
#endif
}
void
@ -616,7 +668,26 @@ d30v_init_extra_frame_info (fromleaf, fi)
if (fi->next && (fi->pc == 0))
fi->pc = fi->next->return_pc;
d30v_frame_find_saved_regs (fi, &dummy);
d30v_frame_find_saved_regs_offsets (fi, &dummy);
if (uses_frame == 0)
fi->frameless = 1;
else
fi->frameless = 0;
if ((fi->next == 0) && (uses_frame == 0))
/* innermost frame and it's "frameless",
so the fi->frame field is wrong, fix it! */
fi->frame = read_sp ();
if (dummy.regs[LR_REGNUM])
{
/* it was saved, grab it! */
dummy.regs[LR_REGNUM] += (fi->frame + frame_size);
fi->return_pc = read_memory_unsigned_integer(dummy.regs[LR_REGNUM],4);
}
else
fi->return_pc = read_register(LR_REGNUM);
}
void