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Stack overflow checking with stack probes.

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This adds a libcall name, a calling convention, and settings for
emitting stack probes, and implements them for x86 system_v ABIs.
This commit is contained in:
Dan Gohman
2018-04-20 21:41:45 -07:00
parent c5b15c2396
commit 3b1d805758
20 changed files with 585 additions and 155 deletions
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34
cranelift/filetests/regalloc/coloring-227.cton
View File

@@ -7,8 +7,8 @@ function %pr227(i32 [%rdi], i32 [%rsi], i32 [%rdx], i32 [%rcx], i64 vmctx [%r8])
heap0 = static gv0, min 0, bound 0x0001_0000_0000, guard 0x8000_0000
ebb0(v0: i32, v1: i32, v2: i32, v3: i32, v4: i64):
@0001 [RexOp1puid#b8] v5 = iconst.i32 0
@0003 [RexOp1puid#b8] v6 = iconst.i32 0
@0001 [RexOp1pu_id#b8] v5 = iconst.i32 0
@0003 [RexOp1pu_id#b8] v6 = iconst.i32 0
@0005 [RexOp1tjccb#74] brz v6, ebb10
@0007 [RexOp1jmpb#eb] jump ebb3(v5, v5, v5, v5, v5, v5, v0, v1, v2, v3)
@@ -16,10 +16,10 @@ function %pr227(i32 [%rdi], i32 [%rsi], i32 [%rdx], i32 [%rcx], i64 vmctx [%r8])
@000b [RexOp1jmpb#eb] jump ebb6
ebb6:
@000d [RexOp1puid#b8] v8 = iconst.i32 0
@000d [RexOp1pu_id#b8] v8 = iconst.i32 0
@000f [RexOp1tjccb#75] brnz v8, ebb5
@0011 [RexOp1puid#b8] v9 = iconst.i32 0
@0015 [RexOp1puid#b8] v11 = iconst.i32 0
@0011 [RexOp1pu_id#b8] v9 = iconst.i32 0
@0015 [RexOp1pu_id#b8] v11 = iconst.i32 0
@0017 [RexOp1icscc#39] v12 = icmp.i32 eq v15, v11
@0017 [RexOp2urm_noflags#4b6] v13 = bint.i32 v12
@001a [RexOp1rr#21] v14 = band v9, v13
@@ -28,11 +28,11 @@ function %pr227(i32 [%rdi], i32 [%rsi], i32 [%rdx], i32 [%rcx], i64 vmctx [%r8])
ebb7:
@0020 [RexOp1tjccb#74] brz.i32 v17, ebb8
@0022 [RexOp1puid#b8] v18 = iconst.i32 0
@0022 [RexOp1pu_id#b8] v18 = iconst.i32 0
@0024 [RexOp1tjccb#74] brz v18, ebb9
@0028 [RexOp1puid#b8] v21 = iconst.i32 0
@0028 [RexOp1pu_id#b8] v21 = iconst.i32 0
@002a [RexOp1umr#89] v79 = uextend.i64 v5
@002a [RexOp1rib#8083] v80 = iadd_imm.i64 v4, 0
@002a [RexOp1r_ib#8083] v80 = iadd_imm.i64 v4, 0
@002a [RexOp1ld#808b] v81 = load.i64 v80
@002a [RexOp1rr#8001] v22 = iadd v81, v79
@002a [RexMp1st#189] istore16 v21, v22
@@ -42,8 +42,8 @@ function %pr227(i32 [%rdi], i32 [%rsi], i32 [%rdx], i32 [%rcx], i64 vmctx [%r8])
@002e [RexOp1jmpb#eb] jump ebb8
ebb8:
@0033 [RexOp1puid#b8] v27 = iconst.i32 3
@0035 [RexOp1puid#b8] v28 = iconst.i32 4
@0033 [RexOp1pu_id#b8] v27 = iconst.i32 3
@0035 [RexOp1pu_id#b8] v28 = iconst.i32 4
@003b [RexOp1rr#09] v35 = bor.i32 v31, v13
@003c [RexOp1tjccb#75] brnz v35, ebb15(v27)
@003c [RexOp1jmpb#eb] jump ebb15(v28)
@@ -58,25 +58,25 @@ function %pr227(i32 [%rdi], i32 [%rsi], i32 [%rdx], i32 [%rcx], i64 vmctx [%r8])
@0045 [RexOp1jmpb#eb] jump ebb2(v40, v47, v54, v61, v68, v75)
ebb10:
@0046 [RexOp1puid#b8] v43 = iconst.i32 0
@0046 [RexOp1pu_id#b8] v43 = iconst.i32 0
@0048 [RexOp1jmpb#eb] jump ebb2(v43, v5, v0, v1, v2, v3)
ebb2(v7: i32, v45: i32, v52: i32, v59: i32, v66: i32, v73: i32):
@004c [RexOp1puid#b8] v44 = iconst.i32 0
@004c [RexOp1pu_id#b8] v44 = iconst.i32 0
@004e [RexOp1tjccb#74] brz v44, ebb12
@0052 [RexOp1puid#b8] v50 = iconst.i32 11
@0052 [RexOp1pu_id#b8] v50 = iconst.i32 11
@0054 [RexOp1tjccb#74] brz v50, ebb14
@0058 [RexOp1umr#89] v82 = uextend.i64 v52
@0058 [RexOp1rib#8083] v83 = iadd_imm.i64 v4, 0
@0058 [RexOp1r_ib#8083] v83 = iadd_imm.i64 v4, 0
@0058 [RexOp1ld#808b] v84 = load.i64 v83
@0058 [RexOp1rr#8001] v57 = iadd v84, v82
@0058 [RexOp1ld#8b] v58 = load.i32 v57
@005d [RexOp1umr#89] v85 = uextend.i64 v58
@005d [RexOp1rib#8083] v86 = iadd_imm.i64 v4, 0
@005d [RexOp1r_ib#8083] v86 = iadd_imm.i64 v4, 0
@005d [RexOp1ld#808b] v87 = load.i64 v86
@005d [RexOp1rr#8001] v64 = iadd v87, v85
@005d [RexOp1st#88] istore8 v59, v64
@0060 [RexOp1puid#b8] v65 = iconst.i32 0
@0060 [RexOp1pu_id#b8] v65 = iconst.i32 0
@0062 [RexOp1jmpb#eb] jump ebb13(v65)
ebb14:
@@ -84,7 +84,7 @@ function %pr227(i32 [%rdi], i32 [%rsi], i32 [%rdx], i32 [%rcx], i64 vmctx [%r8])
ebb13(v51: i32):
@0066 [RexOp1umr#89] v88 = uextend.i64 v45
@0066 [RexOp1rib#8083] v89 = iadd_imm.i64 v4, 0
@0066 [RexOp1r_ib#8083] v89 = iadd_imm.i64 v4, 0
@0066 [RexOp1ld#808b] v90 = load.i64 v89
@0066 [RexOp1rr#8001] v71 = iadd v90, v88
@0066 [RexOp1st#89] store v51, v71

1
cranelift/filetests/regalloc/unreachable_code.cton
View File

@@ -2,6 +2,7 @@
test compile
set is_64bit
set probestack_enabled=0
isa x86 haswell
; This function contains unreachable blocks which trip up the register