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2013-08-26 Raunaq Bathija <raunaq12@in.ibm.com>

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Ulrich Weigand  <uweigand@de.ibm.com>

	* xcoffread.c (arrange_linetable): Add fix to correctly handle
	line tables generated by XLC compiled binaries.
This commit is contained in:
Ulrich Weigand 2013-08-26 15:28:28 +00:00
parent 188253007c
commit a85c52f205
2 changed files with 28 additions and 2 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2013-08-26 Raunaq Bathija <raunaq12@in.ibm.com>
Ulrich Weigand <uweigand@de.ibm.com>
* xcoffread.c (arrange_linetable): Add fix to correctly handle
line tables generated by XLC compiled binaries.
2013-08-23 Doug Evans <dje@google.com>
* symmisc.c (dump_symtab): Delete prototype.

24
gdb/xcoffread.c
View File

@ -437,6 +437,7 @@ arrange_linetable (struct linetable *oldLineTb)
struct linetable_entry *fentry; /* function entry vector */
int fentry_size; /* # of function entries */
struct linetable *newLineTb; /* new line table */
int extra_lines = 0;
#define NUM_OF_FUNCTIONS 20
@ -458,6 +459,12 @@ arrange_linetable (struct linetable *oldLineTb)
fentry[function_count].line = ii;
fentry[function_count].pc = oldLineTb->item[ii].pc;
++function_count;
/* If the function was compiled with XLC, we may have to add an
extra line entry later. Reserve space for that. */
if (ii + 1 < oldLineTb->nitems
&& oldLineTb->item[ii].pc != oldLineTb->item[ii + 1].pc)
extra_lines++;
}
}
@ -474,7 +481,7 @@ arrange_linetable (struct linetable *oldLineTb)
newLineTb = (struct linetable *)
xmalloc
(sizeof (struct linetable) +
(oldLineTb->nitems - function_count) * sizeof (struct linetable_entry));
(oldLineTb->nitems - function_count + extra_lines) * sizeof (struct linetable_entry));
/* If line table does not start with a function beginning, copy up until
a function begin. */
@ -489,13 +496,26 @@ arrange_linetable (struct linetable *oldLineTb)
for (ii = 0; ii < function_count; ++ii)
{
/* If the function was compiled with XLC, we may have to add an
extra line to cover the function prologue. */
jj = fentry[ii].line;
if (jj + 1 < oldLineTb->nitems
&& oldLineTb->item[jj].pc != oldLineTb->item[jj + 1].pc)
{
newLineTb->item[newline] = oldLineTb->item[jj];
newLineTb->item[newline].line = oldLineTb->item[jj + 1].line;
newline++;
}
for (jj = fentry[ii].line + 1;
jj < oldLineTb->nitems && oldLineTb->item[jj].line != 0;
++jj, ++newline)
newLineTb->item[newline] = oldLineTb->item[jj];
}
xfree (fentry);
newLineTb->nitems = oldLineTb->nitems - function_count;
/* The number of items in the line table must include these
extra lines which were added in case of XLC compiled functions. */
newLineTb->nitems = oldLineTb->nitems - function_count + extra_lines;
return newLineTb;
}