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libgcc2.c (find_exception_handler): Subtract one from our PC when looking for a handler...

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* libgcc2.c (find_exception_handler): Subtract one from our PC when
 	looking for a handler, to avoid hitting the beginning of the next
 	region.

	* except.c (expand_builtin_set_return_addr_reg): Use force_operand.

From-SVN: r15534
This commit is contained in:
Jason Merrill 1997-09-18 01:23:34 +00:00 committed by Jason Merrill
parent 4eb66248bf
commit 4f870c0425
3 changed files with 16 additions and 1 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
Wed Sep 17 18:19:53 1997 Jason Merrill <jason@yorick.cygnus.com>
* libgcc2.c (find_exception_handler): Subtract one from our PC when
looking for a handler, to avoid hitting the beginning of the next
region.
* except.c (expand_builtin_set_return_addr_reg): Use force_operand.
Wed Sep 17 18:33:59 1997 Jeffrey A Law (law@cygnus.com) Wed Sep 17 18:33:59 1997 Jeffrey A Law (law@cygnus.com)
* mips/abi64.h (LONG_MAX_SPEC): Define. * mips/abi64.h (LONG_MAX_SPEC): Define.

5
gcc/except.c
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@ -2207,13 +2207,16 @@ void
expand_builtin_set_return_addr_reg (addr_tree) expand_builtin_set_return_addr_reg (addr_tree)
tree addr_tree; tree addr_tree;
{ {
rtx tmp;
rtx ra = expand_builtin_return_addr (BUILT_IN_RETURN_ADDRESS, rtx ra = expand_builtin_return_addr (BUILT_IN_RETURN_ADDRESS,
0, hard_frame_pointer_rtx); 0, hard_frame_pointer_rtx);
if (GET_CODE (ra) != REG || REGNO (ra) >= FIRST_PSEUDO_REGISTER) if (GET_CODE (ra) != REG || REGNO (ra) >= FIRST_PSEUDO_REGISTER)
return; return;
emit_move_insn (ra, expand_builtin_frob_return_addr (addr_tree)); tmp = force_operand (expand_builtin_frob_return_addr (addr_tree), ra);
if (tmp != ra)
emit_move_insn (ra, tmp);
} }
/* Choose two registers for communication between the main body of /* Choose two registers for communication between the main body of

4
gcc/libgcc2.c
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@ -3337,6 +3337,10 @@ find_exception_handler (void *pc, exception_table *table)
int pos; int pos;
int best = -1; int best = -1;
/* We subtract 1 from PC to avoid hitting the beginning of the next
region. */
--pc;
/* We can't do a binary search because the table isn't guaranteed /* We can't do a binary search because the table isn't guaranteed
to be sorted from function to function. */ to be sorted from function to function. */
for (pos = 0; table[pos].exception_handler != (void *) -1; ++pos) for (pos = 0; table[pos].exception_handler != (void *) -1; ++pos)