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(push_float_handler, pop_float_handler): New functions.

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From-SVN: r2543
This commit is contained in:
Richard Stallman 1992-10-21 21:20:41 +00:00
parent 210d97af17
commit bff4b641c7
1 changed files with 30 additions and 0 deletions
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30
gcc/toplev.c
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@ -1360,6 +1360,36 @@ set_float_handler (handler)
bcopy (handler, float_handler, sizeof (float_handler));
}
/* Specify, in HANDLER, where to longjmp to when a floating arithmetic
error happens, pushing the previous specification into OLD_HANDLER.
Return an indication of whether there was a previous handler in effect. */
int
push_float_handler (handler, old_handler)
jmp_buf handler;
{
int was_handled = float_handled;
float_handled = 1;
if (was_handled)
bcopy (float_handler, old_handler, sizeof (float_handler));
bcopy (handler, float_handler, sizeof (float_handler));
return was_handled;
}
/* Restore the previous specification of whether and where to longjmp to
when a floating arithmetic error happens. */
void
pop_float_handler (handled, handler)
int handled;
jmp_buf handler;
{
float_handled = handled;
if (handled)
bcopy (handler, float_handler, sizeof (float_handler));
}
/* Signals actually come here. */
static void