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configure.ac [spu-*-*]: Do not set skipdirs.

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ChangeLog:

2008-10-29  Stefan Schulze Frielinghaus  <xxschulz@de.ibm.com>

	* configure.ac [spu-*-*]: Do not set skipdirs.
	* configure: Re-generate.

gcc/ChangeLog:

2008-10-29  Stefan Schulze Frielinghaus  <xxschulz@de.ibm.com>

	* config/spu/spu.h (FRAME_GROWS_DOWNWARD): Define.
	(INITIAL_FRAME_POINTER_OFFSET): Remove.
	* config/spu/spu.c (spu_initial_elimination_offset): Calculate new
	offset if eliminating soft frame pointer.
	* config/spu/spu.md (stack_protect_set, stack_protect_test)
	(stack_protect_test_si): Add initial machine description
	for Stack Smashing Protector

From-SVN: r141437
This commit is contained in:
Stefan Schulze Frielinghaus 2008-10-29 19:33:45 +00:00 committed by Ulrich Weigand
parent cdd6a337c0
commit 7310a2da1c
7 changed files with 77 additions and 14 deletions
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5
ChangeLog
View File

@ -1,3 +1,8 @@
2008-10-29 Stefan Schulze Frielinghaus <xxschulz@de.ibm.com>
* configure.ac [spu-*-*]: Do not set skipdirs.
* configure: Re-generate.
2008-10-29 Bernd Schmidt <bernd.schmidt@analog.com>
* MAINTAINERS (Various Maintainers): Add myself to reload.

1
configure vendored
View File

@ -2656,7 +2656,6 @@ case "${target}" in
sparc-*-solaris* | sparc64-*-solaris* | sparcv9-*-solaris*)
;;
spu-*-*)
skipdirs="target-libssp"
;;
v810-*-*)
noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libstdc++-v3 opcodes target-libgloss ${libgcj}"

1
configure.ac
View File

@ -892,7 +892,6 @@ case "${target}" in
sparc-*-solaris* | sparc64-*-solaris* | sparcv9-*-solaris*)
;;
spu-*-*)
skipdirs="target-libssp"
;;
v810-*-*)
noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libstdc++-v3 opcodes target-libgloss ${libgcj}"

10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2008-10-29 Stefan Schulze Frielinghaus <xxschulz@de.ibm.com>
* config/spu/spu.h (FRAME_GROWS_DOWNWARD): Define.
(INITIAL_FRAME_POINTER_OFFSET): Remove.
* config/spu/spu.c (spu_initial_elimination_offset): Calculate new
offset if eliminating soft frame pointer.
* config/spu/spu.md (stack_protect_set, stack_protect_test)
(stack_protect_test_si): Add initial machine description
for Stack Smashing Protector
2008-10-29 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR 11492

21
gcc/config/spu/spu.c
View File

@ -1759,8 +1759,8 @@ direct_return (void)
The stack frame looks like this:
+-------------+
| incoming |
AP | args |
+-------------+
| args |
AP -> +-------------+
| $lr save |
+-------------+
prev SP | back chain |
@ -1770,10 +1770,10 @@ direct_return (void)
+-------------+
| ... |
| saved regs | spu_saved_regs_size() bytes
+-------------+
FP -> +-------------+
| ... |
FP | vars | get_frame_size() bytes
+-------------+
| vars | get_frame_size() bytes
HFP -> +-------------+
| ... |
| outgoing |
| args | crtl->outgoing_args_size bytes
@ -1781,8 +1781,8 @@ direct_return (void)
| $lr of next |
| frame |
+-------------+
SP | back chain |
+-------------+
| back chain |
SP -> +-------------+
*/
void
@ -3671,15 +3671,16 @@ spu_initial_elimination_offset (int from, int to)
|| get_frame_size () || saved_regs_size)
sp_offset = STACK_POINTER_OFFSET;
if (from == FRAME_POINTER_REGNUM && to == STACK_POINTER_REGNUM)
return (sp_offset + crtl->outgoing_args_size);
return get_frame_size () + crtl->outgoing_args_size + sp_offset;
else if (from == FRAME_POINTER_REGNUM && to == HARD_FRAME_POINTER_REGNUM)
return 0;
return get_frame_size ();
else if (from == ARG_POINTER_REGNUM && to == STACK_POINTER_REGNUM)
return sp_offset + crtl->outgoing_args_size
+ get_frame_size () + saved_regs_size + STACK_POINTER_OFFSET;
else if (from == ARG_POINTER_REGNUM && to == HARD_FRAME_POINTER_REGNUM)
return get_frame_size () + saved_regs_size + sp_offset;
return 0;
else
gcc_unreachable ();
}
rtx

4
gcc/config/spu/spu.h
View File

@ -251,6 +251,8 @@ targetm.resolve_overloaded_builtin = spu_resolve_overloaded_builtin; \
#define STACK_GROWS_DOWNWARD
#define FRAME_GROWS_DOWNWARD 1
#define STARTING_FRAME_OFFSET (0)
#define STACK_POINTER_OFFSET 32
@ -312,8 +314,6 @@ targetm.resolve_overloaded_builtin = spu_resolve_overloaded_builtin; \
#define FRAME_POINTER_REQUIRED 0
#define INITIAL_FRAME_POINTER_OFFSET(DEPTH) ((DEPTH) = 0)
#define ELIMINABLE_REGS \
{{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \

49
gcc/config/spu/spu.md
View File

@ -155,6 +155,8 @@
(UNSPEC_DFTSV 51)
(UNSPEC_FLOAT_EXTEND 52)
(UNSPEC_FLOAT_TRUNCATE 53)
(UNSPEC_SP_SET 54)
(UNSPEC_SP_TEST 55)
])
(include "predicates.md")
@ -5188,4 +5190,51 @@ DONE;
DONE;
}")
(define_insn "stack_protect_set"
[(set (match_operand:SI 0 "spu_mem_operand" "=m")
(unspec:SI [(match_operand:SI 1 "spu_mem_operand" "m")] UNSPEC_SP_SET))
(set (match_scratch:SI 2 "=&r") (const_int 0))]
""
"lq%p1\t%2,%1\;stq%p0\t%2,%0\;xor\t%2,%2,%2"
[(set_attr "length" "12")
(set_attr "type" "multi1")]
)
(define_expand "stack_protect_test"
[(match_operand 0 "spu_mem_operand" "")
(match_operand 1 "spu_mem_operand" "")
(match_operand 2 "" "")]
""
{
rtx compare_result;
rtx bcomp, loc_ref;
compare_result = gen_reg_rtx (SImode);
emit_insn (gen_stack_protect_test_si (compare_result,
operands[0],
operands[1]));
bcomp = gen_rtx_NE (SImode, compare_result, const0_rtx);
loc_ref = gen_rtx_LABEL_REF (VOIDmode, operands[2]);
emit_jump_insn (gen_rtx_SET (VOIDmode, pc_rtx,
gen_rtx_IF_THEN_ELSE (VOIDmode, bcomp,
loc_ref, pc_rtx)));
DONE;
})
(define_insn "stack_protect_test_si"
[(set (match_operand:SI 0 "spu_reg_operand" "=&r")
(unspec:SI [(match_operand:SI 1 "spu_mem_operand" "m")
(match_operand:SI 2 "spu_mem_operand" "m")]
UNSPEC_SP_TEST))
(set (match_scratch:SI 3 "=&r") (const_int 0))]
""
"lq%p1\t%0,%1\;lq%p2\t%3,%2\;ceq\t%0,%0,%3\;xor\t%3,%3,%3"
[(set_attr "length" "16")
(set_attr "type" "multi1")]
)