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Refactor unwind; add FDE support. (#1320)

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* Refactor unwind

* add FDE support

* use sink directly in emit functions

* pref off all unwinding generation with feature
This commit is contained in:
Yury Delendik
2020-01-13 10:32:55 -06:00
committed by GitHub
parent 6080eeb544
commit bd88155483
14 changed files with 1002 additions and 57 deletions
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54
cranelift/filetests/filetests/isa/x86/windows_systemv_x64_fde.clif Normal file
View File

@@ -0,0 +1,54 @@
test fde
set opt_level=speed_and_size
set is_pic
target x86_64 haswell
; check that there is no libunwind information for a windows_fastcall function
function %not_fastcall() windows_fastcall {
ebb0:
return
}
; sameln: No unwind information.
; check the libunwind information with a function with no args
function %no_args() system_v {
ebb0:
return
}
; sameln: 0x00000000: CIE
; nextln: length: 0x00000014
; nextln: version: 0x01
; nextln: code_align: 1
; nextln: data_align: -8
; nextln: ra_register: 0x10
; nextln: DW_CFA_def_cfa (r7, 8)
; nextln: DW_CFA_offset (r16, 1)
; nextln: DW_CFA_nop
; nextln: DW_CFA_nop
; nextln: DW_CFA_nop
; nextln: DW_CFA_nop
; nextln: DW_CFA_nop
; nextln: DW_CFA_nop
; nextln: Instructions: Init State:
; nextln:
; nextln:
; nextln: 0x00000018: FDE
; nextln: length: 0x00000024
; nextln: CIE_pointer: 0x00000000
; nextln: start_addr: 0x0000000000000000
; nextln: range_size: 0x0000000000000006 (end_addr = 0x0000000000000006)
; nextln: Instructions:
; nextln: DW_CFA_advance_loc (1)
; nextln: DW_CFA_def_cfa_offset (16)
; nextln: DW_CFA_offset (r6, 2)
; nextln: DW_CFA_advance_loc (3)
; nextln: DW_CFA_def_cfa_register (r6)
; nextln: DW_CFA_advance_loc (1)
; nextln: DW_CFA_def_cfa (r7, 8)
; nextln: DW_CFA_nop
; nextln: DW_CFA_nop
; nextln: DW_CFA_nop
; nextln: DW_CFA_nop
; nextln:
; nextln: Entry: 24
; nextln: Relocs: [(Abs8, 32)]