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2004-11-10 msnyder <msnyder@redhat.com>

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* rs6000-tdep.c (skip_prologue): After saving lr_offset,
	must invalidate lr_reg (so we don't try to save it again).
	Ditto for cr_offset and cr_reg.
This commit is contained in:
Michael Snyder
2004-11-11 19:21:01 +00:00
parent a67517f48e
commit be723e2244
2 changed files with 14 additions and 4 deletions
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12
gdb/rs6000-tdep.c
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@@ -981,7 +981,7 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
continue;
}
else if (lr_reg != -1 &&
else if (lr_reg >= 0 &&
/* std Rx, NUM(r1) || stdu Rx, NUM(r1) */
(((op & 0xffff0000) == (lr_reg | 0xf8010000)) ||
/* stw Rx, NUM(r1) */
@@ -991,7 +991,9 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
{ /* where Rx == lr */
fdata->lr_offset = offset;
fdata->nosavedpc = 0;
lr_reg = 0;
/* Invalidate lr_reg, but don't set it to -1.
That would mean that it had never been set. */
lr_reg = -2;
if ((op & 0xfc000003) == 0xf8000000 || /* std */
(op & 0xfc000000) == 0x90000000) /* stw */
{
@@ -1001,7 +1003,7 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
continue;
}
else if (cr_reg != -1 &&
else if (cr_reg >= 0 &&
/* std Rx, NUM(r1) || stdu Rx, NUM(r1) */
(((op & 0xffff0000) == (cr_reg | 0xf8010000)) ||
/* stw Rx, NUM(r1) */
@@ -1010,7 +1012,9 @@ skip_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct rs6000_framedata *fdata)
((op & 0xffff0000) == (cr_reg | 0x94010000))))
{ /* where Rx == cr */
fdata->cr_offset = offset;
cr_reg = 0;
/* Invalidate cr_reg, but don't set it to -1.
That would mean that it had never been set. */
cr_reg = -2;
if ((op & 0xfc000003) == 0xf8000000 ||
(op & 0xfc000000) == 0x90000000)
{