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* mn10200-tdep.c (mn10200_analyze_prologue): Don't fix fi->frame

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if we're not the innermost frame.  Fix minor typos.
So debugging without frame pointers works.
This commit is contained in:
Jeff Law 1997-02-24 23:38:31 +00:00
parent dc25aca068
commit 05f9155f5c
1 changed files with 26 additions and 22 deletions
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48
gdb/mn10200-tdep.c
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@ -135,13 +135,15 @@ mn10200_analyze_prologue (fi, pc)
status = target_read_memory (fi->pc, buf, 1);
if (status != 0)
{
fi->frame = read_sp ();
if (fi->next == NULL)
fi->frame = read_sp ();
return fi->pc;
}
if (buf[0] == 0xfe)
{
fi->frame = read_sp ();
if (fi->next == NULL)
fi->frame = read_sp ();
return fi->pc;
}
}
@ -150,7 +152,8 @@ mn10200_analyze_prologue (fi, pc)
frame hasn't been allocated yet. */
if (fi && fi->pc == func_addr)
{
fi->frame = read_sp ();
if (fi->next == NULL)
fi->frame = read_sp ();
return fi->pc;
}
@ -166,7 +169,7 @@ mn10200_analyze_prologue (fi, pc)
status = target_read_memory (addr, buf, 2);
if (status != 0)
{
if (fi && fi->status & MY_FRAME_IN_SP)
if (fi && fi->next == NULL && fi->status & MY_FRAME_IN_SP)
fi->frame = read_sp ();
return addr;
}
@ -197,7 +200,7 @@ mn10200_analyze_prologue (fi, pc)
{
/* We still haven't allocated our local stack. Handle this
as if we stopped on the first or last insn of a function. */
if (fi)
if (fi && fi->next == NULL)
fi->frame = read_sp ();
return addr;
}
@ -205,7 +208,7 @@ mn10200_analyze_prologue (fi, pc)
status = target_read_memory (addr, buf, 2);
if (status != 0)
{
if (fi)
if (fi && fi->next == NULL)
fi->frame = read_sp ();
return addr;
}
@ -224,7 +227,7 @@ mn10200_analyze_prologue (fi, pc)
}
else
{
if (fi)
if (fi && fi->next == NULL)
fi->frame = read_sp ();
return addr;
}
@ -242,7 +245,7 @@ mn10200_analyze_prologue (fi, pc)
status = target_read_memory (addr, buf, 2);
if (status != 0)
{
if (fi && (fi->status & MY_FRAME_IN_SP))
if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp ();
return addr;
}
@ -254,8 +257,8 @@ mn10200_analyze_prologue (fi, pc)
addr += 2;
if (addr >= stop)
{
if (fi && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp () + stack_size;
if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp () - stack_size;
return addr;
}
}
@ -264,7 +267,7 @@ mn10200_analyze_prologue (fi, pc)
status = target_read_memory (addr + 2, buf, 2);
if (status != 0)
{
if (fi && (fi->status & MY_FRAME_IN_SP))
if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp ();
return addr;
}
@ -274,8 +277,8 @@ mn10200_analyze_prologue (fi, pc)
addr += 4;
if (addr >= stop)
{
if (fi && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp () + stack_size;
if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp () - stack_size;
return addr;
}
}
@ -284,7 +287,7 @@ mn10200_analyze_prologue (fi, pc)
status = target_read_memory (addr + 2, buf, 3);
if (status != 0)
{
if (fi && (fi->status & MY_FRAME_IN_SP))
if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp ();
return addr;
}
@ -294,23 +297,24 @@ mn10200_analyze_prologue (fi, pc)
addr += 5;
if (addr >= stop)
{
if (fi && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp () + stack_size;
if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp () - stack_size;
return addr;
}
}
else
{
if (fi && (fi->status & MY_FRAME_IN_SP))
if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP))
fi->frame = read_sp ();
return addr;
}
/* At this point fi->frame needs to be correct.
If MY_FRAME_IN_SP is set, then we need to fix fi->frame so
that backtracing, find_frame_saved_regs, etc work correctly. */
if (fi && (fi->status & MY_FRAME_IN_SP) != 0)
If MY_FRAME_IN_SP is set and we're the innermost frame, then we
need to fix fi->frame so that backtracing, find_frame_saved_regs,
etc work correctly. */
if (fi && fi->next == NULL && (fi->status & MY_FRAME_IN_SP) != 0)
fi->frame = read_sp () - fi->stack_size;
/* And last we have the register saves. These are relatively
@ -416,7 +420,7 @@ mn10200_frame_chain (fi)
Else it's still in $a2.
If our caller does not have a frame pointer, then his
frame base is fi->frame + caller's stack size + 4. */
frame base is fi->frame + -caller's stack size + 4. */
/* The easiest way to get that info is to analyze our caller's frame.
@ -445,7 +449,7 @@ mn10200_frame_chain (fi)
{
/* Our caller does not have a frame pointer. So his frame starts
at the base of our frame (fi->frame) + <his size> + 4 (saved pc). */
return fi->frame + dummy_frame.stack_size + 4;
return fi->frame + -dummy_frame.stack_size + 4;
}
}