diff options
| author | flysand7 <yyakut.ac@gmail.com> | 2023-10-20 23:31:09 +1100 |
|---|---|---|
| committer | flysand7 <yyakut.ac@gmail.com> | 2023-10-20 23:31:09 +1100 |
| commit | 05a9652f76e4d673ac6ec21113866eb5d34435ea (patch) | |
| tree | 03e08dfe3523ecedf48c9d47512211c3b4a34ded | |
| parent | ba5df8edca5e20bbb8dc2fea777df41374c6e06c (diff) | |
convert procs_windows_amd64.asm to tabs
| -rw-r--r-- | core/runtime/procs_windows_amd64.asm | 54 |
1 files changed, 27 insertions, 27 deletions
diff --git a/core/runtime/procs_windows_amd64.asm b/core/runtime/procs_windows_amd64.asm index 350ffad2b..f588b3453 100644 --- a/core/runtime/procs_windows_amd64.asm +++ b/core/runtime/procs_windows_amd64.asm @@ -45,35 +45,35 @@ section .text ; totally supports this kind of stack. __chkstk: ;; Allocate 16 bytes to store values of r10 and r11 - sub rsp, 0x10 - mov [rsp], r10 - mov [rsp+0x8], r11 - ;; Set r10 to point to the stack as of the moment of the function call - lea r10, [rsp+0x18] - ;; Subtract r10 til the bottom of the stack allocation, if we overflow - ;; reset r10 to 0, we'll crash with segfault anyway - xor r11, r11 - sub r10, rax - cmovb r10, r11 - ;; Load r11 with the bottom of the stack (lowest allocated address) - mov r11, gs:[0x10] ; NOTE(flysand): gs:[0x10] is stack limit - ;; If the bottom of the allocation is above the bottom of the stack, - ;; we don't need to probe - cmp r10, r11 - jnb .end - ;; Align the bottom of the allocation down to page size - and r10w, 0xf000 + sub rsp, 0x10 + mov [rsp], r10 + mov [rsp+0x8], r11 + ;; Set r10 to point to the stack as of the moment of the function call + lea r10, [rsp+0x18] + ;; Subtract r10 til the bottom of the stack allocation, if we overflow + ;; reset r10 to 0, we'll crash with segfault anyway + xor r11, r11 + sub r10, rax + cmovb r10, r11 + ;; Load r11 with the bottom of the stack (lowest allocated address) + mov r11, gs:[0x10] ; NOTE(flysand): gs:[0x10] is stack limit + ;; If the bottom of the allocation is above the bottom of the stack, + ;; we don't need to probe + cmp r10, r11 + jnb .end + ;; Align the bottom of the allocation down to page size + and r10w, 0xf000 .loop: ;; Move the pointer to the next guard page, and touch it by loading 0 ;; into that page - lea r11, [r11-0x1000] - mov byte [r11], 0x0 - ;; Did we reach the bottom of the allocation? - cmp r10, r11 - jnz .loop + lea r11, [r11-0x1000] + mov byte [r11], 0x0 + ;; Did we reach the bottom of the allocation? + cmp r10, r11 + jnz .loop .end: ;; Restore previous r10 and r11 and return - mov r10, [rsp] - mov r11, [rsp+0x8] - add rsp, 0x10 - ret
\ No newline at end of file + mov r10, [rsp] + mov r11, [rsp+0x8] + add rsp, 0x10 + ret
\ No newline at end of file |