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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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12
cranelift/filetests/isa/x86/prologue-epilogue.cton
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@@ -36,8 +36,8 @@ ebb0:
; nextln: ebb0(v0: i64 [%rbp]):
; nextln: x86_push v0
; nextln: copy_special %rsp -> %rbp
; nextln: adjust_sp_imm -176
; nextln: adjust_sp_imm 176
; nextln: adjust_sp_down_imm 176
; nextln: adjust_sp_up_imm 176
; nextln: v1 = x86_pop.i64
; nextln: return v1
; nextln: }
@@ -109,7 +109,7 @@ ebb0(v0: i64, v1: i64):
; nextln: x86_push v18
; nextln: x86_push v19
; nextln: x86_push v20
; nextln: adjust_sp_imm -8
; nextln: adjust_sp_down_imm 8
; nextln: v2 = load.i32 v0
; nextln: v3 = load.i32 v0+8
; nextln: v4 = load.i32 v0+16
@@ -136,7 +136,7 @@ ebb0(v0: i64, v1: i64):
; nextln: store v12, v1+80
; nextln: store v13, v1+88
; nextln: store v14, v1+96
; nextln: adjust_sp_imm 8
; nextln: adjust_sp_up_imm 8
; nextln: v26 = x86_pop.i64
; nextln: v25 = x86_pop.i64
; nextln: v24 = x86_pop.i64
@@ -192,13 +192,13 @@ ebb0(v0: i64, v1: i64):
; nextln: x86_push v51
; nextln: x86_push v52
; nextln: x86_push v53
; nextln: adjust_sp_imm
; nextln: adjust_sp_down_imm
; check: spill
; check: fill
; check: adjust_sp_imm
; check: adjust_sp_up_imm
; nextln: v59 = x86_pop.i64
; nextln: v58 = x86_pop.i64
; nextln: v57 = x86_pop.i64