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linux.h (TARGET_THREAD_SSP_OFFSET): Define.

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2005-08-12  Andreas Krebbel  <krebbel1@de.ibm.com>
	    Jakub Jelinek  <jakub@redhat.com>

	* config/s390/linux.h (TARGET_THREAD_SSP_OFFSET): Define.
	* config/s390/s390-protos.h (s390_get_thread_pointer): Prototype added.
	* config/s390/s390.c (print_operand): New output modifier 'G' added.
	(get_thread_pointer): Renamed to s390_get_thread_pointer.
	* config/s390/s390.md (stack_protect_set, stack_protect_test): If
	TARGET_THREAD_SSP_OFFSET is defined, change operands[1] to
	(MEM:P (PLUS:P (tp, TARGET_THREAD_SSP_OFFSET))).
	(UNSPEC_SP_SET, UNSPEC_SP_TEST): New constants.
	("stack_protect_set", "stack_protect_test"): New expanders.
	("stack_protect_setsi", "stack_protect_setdi", "stack_protect_testsi",
	"stack_protect_testdi"): New insn definitions.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r103034
This commit is contained in:
Andreas Krebbel 2005-08-12 13:49:18 +00:00 committed by Ulrich Weigand
parent 4700982dd7
commit 7b8acc3494
5 changed files with 100 additions and 7 deletions
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15
gcc/ChangeLog
View File

@ -1,3 +1,18 @@
2005-08-12 Andreas Krebbel <krebbel1@de.ibm.com>
Jakub Jelinek <jakub@redhat.com>
* config/s390/linux.h (TARGET_THREAD_SSP_OFFSET): Define.
* config/s390/s390-protos.h (s390_get_thread_pointer): Prototype added.
* config/s390/s390.c (print_operand): New output modifier 'G' added.
(get_thread_pointer): Renamed to s390_get_thread_pointer.
* config/s390/s390.md (stack_protect_set, stack_protect_test): If
TARGET_THREAD_SSP_OFFSET is defined, change operands[1] to
(MEM:P (PLUS:P (tp, TARGET_THREAD_SSP_OFFSET))).
(UNSPEC_SP_SET, UNSPEC_SP_TEST): New constants.
("stack_protect_set", "stack_protect_test"): New expanders.
("stack_protect_setsi", "stack_protect_setdi", "stack_protect_testsi",
"stack_protect_testdi"): New insn definitions.
2005-08-12 Andreas Krebbel <krebbel1@de.ibm.com>
* config/s390/s390.md ("*movdf_31"): Changed constraint from P to K.

6
gcc/config/s390/linux.h
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@ -94,4 +94,10 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
#define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h"
#ifdef TARGET_LIBC_PROVIDES_SSP
/* s390 glibc provides __stack_chk_guard in 0x14(tp),
s390x glibc provides it at 0x28(tp). */
#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14)
#endif
#endif

1
gcc/config/s390/s390-protos.h
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@ -91,6 +91,7 @@ extern void s390_initialize_trampoline (rtx, rtx, rtx);
extern rtx s390_gen_rtx_const_DI (int, int);
extern int s390_agen_dep_p (rtx, rtx);
extern rtx s390_load_got (void);
extern rtx s390_get_thread_pointer (void);
extern void s390_emit_tpf_eh_return (rtx);
extern bool s390_legitimate_address_without_index_p (rtx);
extern int s390_branch_condition_mask (rtx);

17
gcc/config/s390/s390.c
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@ -2832,8 +2832,8 @@ legitimize_pic_address (rtx orig, rtx reg)
/* Load the thread pointer into a register. */
static rtx
get_thread_pointer (void)
rtx
s390_get_thread_pointer (void)
{
rtx tp = gen_reg_rtx (Pmode);
@ -2893,7 +2893,7 @@ legitimize_tls_address (rtx addr, rtx reg)
temp = gen_reg_rtx (Pmode);
emit_libcall_block (insn, temp, r2, new);
new = gen_rtx_PLUS (Pmode, get_thread_pointer (), temp);
new = gen_rtx_PLUS (Pmode, s390_get_thread_pointer (), temp);
if (reg != 0)
{
s390_load_address (reg, new);
@ -2916,7 +2916,7 @@ legitimize_tls_address (rtx addr, rtx reg)
temp = gen_reg_rtx (Pmode);
emit_libcall_block (insn, temp, r2, new);
new = gen_rtx_PLUS (Pmode, get_thread_pointer (), temp);
new = gen_rtx_PLUS (Pmode, s390_get_thread_pointer (), temp);
base = gen_reg_rtx (Pmode);
s390_load_address (base, new);
@ -3003,7 +3003,7 @@ legitimize_tls_address (rtx addr, rtx reg)
emit_insn (gen_rtx_SET (Pmode, temp, new));
}
new = gen_rtx_PLUS (Pmode, get_thread_pointer (), temp);
new = gen_rtx_PLUS (Pmode, s390_get_thread_pointer (), temp);
if (reg != 0)
{
s390_load_address (reg, new);
@ -3018,7 +3018,7 @@ legitimize_tls_address (rtx addr, rtx reg)
temp = gen_reg_rtx (Pmode);
emit_move_insn (temp, new);
new = gen_rtx_PLUS (Pmode, get_thread_pointer (), temp);
new = gen_rtx_PLUS (Pmode, s390_get_thread_pointer (), temp);
if (reg != 0)
{
s390_load_address (reg, new);
@ -3931,6 +3931,7 @@ print_operand_address (FILE *file, rtx addr)
'C': print opcode suffix for branch condition.
'D': print opcode suffix for inverse branch condition.
'J': print tls_load/tls_gdcall/tls_ldcall suffix
'G': print the size of the operand in bytes.
'O': print only the displacement of a memory reference.
'R': print only the base register of a memory reference.
'S': print S-type memory reference (base+displacement).
@ -3977,6 +3978,10 @@ print_operand (FILE *file, rtx x, int code)
gcc_unreachable ();
return;
case 'G':
fprintf (file, "%u", GET_MODE_SIZE (GET_MODE (x)));
return;
case 'O':
{
struct s390_address ad;

68
gcc/config/s390/s390.md
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@ -122,7 +122,11 @@
(UNSPEC_TLS_LOAD 512)
; String Functions
(UNSPEC_SRST 600)
(UNSPEC_SRST 600)
; Stack Smashing Protector
(UNSPEC_SP_SET 700)
(UNSPEC_SP_TEST 701)
])
;;
@ -7145,3 +7149,65 @@
DONE;
})
;
; Stack Protector Patterns
;
(define_expand "stack_protect_set"
[(set (match_operand 0 "memory_operand" "")
(match_operand 1 "memory_operand" ""))]
""
{
#ifdef TARGET_THREAD_SSP_OFFSET
operands[1]
= gen_rtx_MEM (Pmode, gen_rtx_PLUS (Pmode, s390_get_thread_pointer (),
GEN_INT (TARGET_THREAD_SSP_OFFSET)));
#endif
if (TARGET_64BIT)
emit_insn (gen_stack_protect_setdi (operands[0], operands[1]));
else
emit_insn (gen_stack_protect_setsi (operands[0], operands[1]));
DONE;
})
(define_insn "stack_protect_set<mode>"
[(set (match_operand:DSI 0 "memory_operand" "=Q")
(unspec:DSI [(match_operand:DSI 1 "memory_operand" "Q")] UNSPEC_SP_SET))]
""
"mvc\t%O0(%G0,%R0),%S1"
[(set_attr "op_type" "SS")])
(define_expand "stack_protect_test"
[(set (reg:CC CC_REGNUM)
(compare (match_operand 0 "memory_operand" "")
(match_operand 1 "memory_operand" "")))
(match_operand 2 "" "")]
""
{
#ifdef TARGET_THREAD_SSP_OFFSET
operands[1]
= gen_rtx_MEM (Pmode, gen_rtx_PLUS (Pmode, s390_get_thread_pointer (),
GEN_INT (TARGET_THREAD_SSP_OFFSET)));
#endif
s390_compare_op0 = operands[0];
s390_compare_op1 = operands[1];
s390_compare_emitted = gen_rtx_REG (CCZmode, CC_REGNUM);
if (TARGET_64BIT)
emit_insn (gen_stack_protect_testdi (operands[0], operands[1]));
else
emit_insn (gen_stack_protect_testsi (operands[0], operands[1]));
emit_jump_insn (gen_beq (operands[2]));
DONE;
})
(define_insn "stack_protect_test<mode>"
[(set (reg:CCZ CC_REGNUM)
(unspec:CCZ [(match_operand:DSI 0 "memory_operand" "Q")
(match_operand:DSI 1 "memory_operand" "Q")] UNSPEC_SP_TEST))]
""
"clc\t%O0(%G0,%R0),%S1"
[(set_attr "op_type" "SS")])