1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
commit 8a1b46d59d6c3e1e5eb606cd44689c8557612257
Author: law <law@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Sep 20 05:21:09 2017 +0000
* config/alpha/alpha.c (alpha_expand_prologue): Also check
flag_stack_clash_protection.
* config/ia64/ia64.c (ia64_compute_frame_size): Likewise.
(ia64_expand_prologue): Likewise.
* config/mips/mips.c (mips_expand_prologue): Likewise.
* config/sparc/sparc.c (sparc_expand_prologue): Likewise.
(sparc_flat_expand_prologue): Likewise.
* config/spu/spu.c (spu_expand_prologue): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@252996 138bc75d-0d04-0410-961f-82ee72b054a4
diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c
index 5402f5213d6..c46c843e462 100644
--- a/gcc/config/alpha/alpha.c
+++ b/gcc/config/alpha/alpha.c
@@ -7624,7 +7624,7 @@ alpha_expand_prologue (void)
Note that we are only allowed to adjust sp once in the prologue. */
probed_size = frame_size;
- if (flag_stack_check)
+ if (flag_stack_check || flag_stack_clash_protection)
probed_size += get_stack_check_protect ();
if (probed_size <= 32768)
@@ -7639,7 +7639,7 @@ alpha_expand_prologue (void)
/* We only have to do this probe if we aren't saving registers or
if we are probing beyond the frame because of -fstack-check. */
if ((sa_size == 0 && probed_size > probed - 4096)
- || flag_stack_check)
+ || flag_stack_check || flag_stack_clash_protection)
emit_insn (gen_probe_stack (GEN_INT (-probed_size)));
}
@@ -7669,7 +7669,8 @@ alpha_expand_prologue (void)
late in the compilation, generate the loop as a single insn. */
emit_insn (gen_prologue_stack_probe_loop (count, ptr));
- if ((leftover > 4096 && sa_size == 0) || flag_stack_check)
+ if ((leftover > 4096 && sa_size == 0)
+ || flag_stack_check || flag_stack_clash_protection)
{
rtx last = gen_rtx_MEM (DImode,
plus_constant (Pmode, ptr, -leftover));
@@ -7677,7 +7678,7 @@ alpha_expand_prologue (void)
emit_move_insn (last, const0_rtx);
}
- if (flag_stack_check)
+ if (flag_stack_check || flag_stack_clash_protection)
{
/* If -fstack-check is specified we have to load the entire
constant into a register and subtract from the sp in one go,
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index 390983936e8..5bf7046cf15 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -2638,7 +2638,8 @@ ia64_compute_frame_size (HOST_WIDE_INT size)
mark_reg_gr_used_mask (cfun->machine->ia64_eh_epilogue_bsp, NULL);
/* Static stack checking uses r2 and r3. */
- if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK)
+ if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK
+ || flag_stack_clash_protection)
current_frame_info.gr_used_mask |= 0xc;
/* Find the size of the register stack frame. We have only 80 local
@@ -3434,7 +3435,8 @@ ia64_expand_prologue (void)
if (flag_stack_usage_info)
current_function_static_stack_size = current_frame_info.total_size;
- if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK)
+ if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK
+ || flag_stack_clash_protection)
ia64_emit_probe_stack_range (get_stack_check_protect (),
current_frame_info.total_size,
current_frame_info.n_input_regs
diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 9b7eb678f19..da17f94b4f9 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -10745,7 +10745,9 @@ mips_expand_prologue (void)
if (flag_stack_usage_info)
current_function_static_stack_size = size;
- if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK && size)
+ if ((flag_stack_check == STATIC_BUILTIN_STACK_CHECK
+ || flag_stack_clash_protection)
+ && size)
mips_emit_probe_stack_range (get_stack_check_protect (), size);
/* Save the registers. Allocate up to MIPS_MAX_FIRST_STACK_STEP
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index e5e93c80261..617aa617208 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -5430,7 +5430,9 @@ sparc_expand_prologue (void)
if (flag_stack_usage_info)
current_function_static_stack_size = size;
- if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK && size)
+ if ((flag_stack_check == STATIC_BUILTIN_STACK_CHECK
+ || flag_stack_clash_protection)
+ && size)
sparc_emit_probe_stack_range (get_stack_check_protect (), size);
if (size == 0)
@@ -5532,7 +5534,9 @@ sparc_flat_expand_prologue (void)
if (flag_stack_usage_info)
current_function_static_stack_size = size;
- if (flag_stack_check == STATIC_BUILTIN_STACK_CHECK && size)
+ if ((flag_stack_check == STATIC_BUILTIN_STACK_CHECK
+ || flag_stack_clash_protection)
+ && size)
sparc_emit_probe_stack_range (get_stack_check_protect (), size);
if (sparc_save_local_in_regs_p)
diff --git a/gcc/config/spu/spu.c b/gcc/config/spu/spu.c
index 328bd5bd2ae..5541a3cd243 100644
--- a/gcc/config/spu/spu.c
+++ b/gcc/config/spu/spu.c
@@ -1761,7 +1761,7 @@ spu_expand_prologue (void)
if (total_size > 0)
{
- if (flag_stack_check)
+ if (flag_stack_check || flag_stack_clash_protection)
{
/* We compare against total_size-1 because
($sp >= total_size) <=> ($sp > total_size-1) */
@@ -5366,7 +5366,7 @@ spu_allocate_stack (rtx op0, rtx op1)
emit_insn (gen_spu_convert (sp, stack_pointer_rtx));
emit_insn (gen_subv4si3 (sp, sp, splatted));
- if (flag_stack_check)
+ if (flag_stack_check || flag_stack_clash_protection)
{
rtx avail = gen_reg_rtx(SImode);
rtx result = gen_reg_rtx(SImode);
|
