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pa.md (interspace_jump): Revise comment.

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* pa.md (interspace_jump): Revise comment.
	(builtin_longjmp): Block initial setup insns from delay slot of
	interspace branch.
	(builtin_setjmp_receiver): New expander to save and restore PIC
	register.

	* som.h (NM_FLAGS): Remove `-n' sort option.  Revise comment.

From-SVN: r41902
This commit is contained in:
John David Anglin 2001-05-07 19:22:28 +00:00 committed by John David Anglin
parent 1a560c3a48
commit 5c8cfcd63d
3 changed files with 37 additions and 6 deletions
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10
gcc/ChangeLog
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@ -1,3 +1,13 @@
2001-05-07 John David Anglin <dave@hiauly1.hia.nrc.ca>
* pa.md (interspace_jump): Revise comment.
(builtin_longjmp): Block initial setup insns from delay slot of
interspace branch.
(builtin_setjmp_receiver): New expander to save and restore PIC
register.
* som.h (NM_FLAGS): Remove `-n' sort option. Revise comment.
Mon May 7 09:30:14 2001 Jeffrey A Law (law@cygnus.com)
* toplev.c (compile_file): Set up the output file before we call

24
gcc/config/pa/pa.md
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@ -6212,8 +6212,7 @@
;;; EH does longjmp's from and within the data section. Thus,
;;; an interspace branch is required for the longjmp implementation.
;;; Registers r1 and r2 are not saved in the jmpbuf environment.
;;; Thus, they can be used as scratch registers for the jump.
;;; Registers r1 and r2 are used as scratch registers for the jump.
(define_expand "interspace_jump"
[(parallel
[(set (pc) (match_operand 0 "pmode_register_operand" "a"))
@ -6263,10 +6262,16 @@
where to look for it when we get back to setjmp's function for
restoring the gp. */
emit_move_insn (pv, lab);
/* Prevent the insns above from being scheduled into the delay slot
of the interspace jump because the space register could change. */
emit_insn (gen_blockage ());
emit_jump_insn (gen_interspace_jump (pv));
emit_barrier ();
DONE;
}")
;;; Hope this is only within a function...
(define_insn "indirect_jump"
[(set (pc) (match_operand 0 "register_operand" "r"))]
@ -7124,3 +7129,18 @@
emit_insn (gen_blockage ());
DONE;
}")
(define_expand "builtin_setjmp_receiver"
[(label_ref (match_operand 0 "" ""))]
"flag_pic"
"
{
if (PIC_OFFSET_TABLE_SAVE_RTX == NULL_RTX)
hppa_init_pic_save ();
/* Restore the PIC register. Hopefully, this will always be from
a stack slot. The only registers that are valid after a
builtin_longjmp are the stack and frame pointers. */
emit_move_insn (pic_offset_table_rtx, PIC_OFFSET_TABLE_SAVE_RTX);
DONE;
}")

9
gcc/config/pa/som.h
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@ -1,5 +1,5 @@
/* Definitions for SOM assembler support.
Copyright (C) 1999 Free Software Foundation, Inc.
Copyright (C) 1999, 2001 Free Software Foundation, Inc.
This file is part of GNU CC.
@ -52,9 +52,10 @@ Boston, MA 02111-1307, USA. */
"\t.stabs \"\",%d,0,0,L$text_end0000\nL$text_end0000:\n", N_SO)
/* The HP supplied NM will print out the subspace names for each symbol it
finds, which can cause false matches when looking for ctors/dtors. The
"-p" argument changes the output to not include subspace names. */
#define NM_FLAGS "-p -n"
finds, which can cause collect2 to find false matches when searching
for ctors/dtors. The "-p" option changes the output to not include
subspace names. The "-n" sorting option is unnecessary. */
#define NM_FLAGS "-p"
/* HPUX has a program 'chatr' to list the dependencies of dynamically
linked executables and shared libraries. */