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Versions: 38
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Stored size: 1.53 KB
Contents
PUBLIC rust_psm_stack_direction
PUBLIC rust_psm_stack_pointer
PUBLIC rust_psm_replace_stack
PUBLIC rust_psm_on_stack
_TEXT SEGMENT
; extern "sysv64" fn() -> u8 (%al)
rust_psm_stack_direction PROC
mov al, 2
ret
rust_psm_stack_direction ENDP
; extern "sysv64" fn() -> *mut u8 (%rax)
rust_psm_stack_pointer PROC
lea rax, [rsp + 8]
ret
rust_psm_stack_pointer ENDP
; extern "sysv64" fn(%rdi: usize, %rsi: extern "sysv64" fn(usize), %rdx: *mut u8, %rcx: *mut u8)
rust_psm_replace_stack PROC
mov gs:[08h], rdx
mov gs:[10h], rcx
lea rsp, [rdx - 8]
jmp rsi
rust_psm_replace_stack ENDP
; extern "sysv64" fn(%rdi: usize, %rsi: usize,
; %rdx: extern "sysv64" fn(usize, usize), %rcx: *mut u8, %r8: *mut u8)
;
; NB: on Windows for SEH to work at all, the pointers in TIB, thread information block, need to be
; fixed up. Otherwise, it seems that exception mechanism on Windows will not bother looking for
; exception handlers at *all* if they happen to fall outside the are specified in TIB.
;
; This necessitates an API difference from the usual 4-argument signature used elsewhere.
;
; FIXME: this needs a catch-all exception handler that aborts in case somebody unwinds into here.
rust_psm_on_stack PROC FRAME
push rbp
.pushreg rbp
mov rbp, rsp
.setframe rbp, 0
.endprolog
push gs:[08h]
mov gs:[08h], rcx
push gs:[10h]
mov gs:[10h], r8
mov rsp, rcx
call rdx
lea rsp, [rbp - 010h]
pop gs:[10h]
pop gs:[08h]
pop rbp
ret
rust_psm_on_stack ENDP
_TEXT ENDS
END
Version data entries
38 entries across 38 versions & 1 rubygems