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#if defined(__aarch64__) && defined(__linux__)
#include "sanitizer_common/sanitizer_asm.h"
#include "builtins/assembly.h"
ASM_HIDDEN(COMMON_INTERCEPTOR_SPILL_AREA)
.comm _ZN14__interception10real_vforkE,8,8
.globl ASM_WRAPPER_NAME(vfork)
ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork))
ASM_WRAPPER_NAME(vfork):
// Save x30 in the off-stack spill area.
hint #25 // paciasp
stp xzr, x30, [sp, #-16]!
bl COMMON_INTERCEPTOR_SPILL_AREA
ldp xzr, x30, [sp], 16
str x30, [x0]
// Call real vfork. This may return twice. User code that runs between the first and the second return
// may clobber the stack frame of the interceptor; that's why it does not have a frame.
adrp x0, _ZN14__interception10real_vforkE
ldr x0, [x0, :lo12:_ZN14__interception10real_vforkE]
blr x0
stp x0, xzr, [sp, #-16]!
cmp x0, #0
b.eq .L_exit
// x0 != 0 => parent process. Clear stack shadow.
add x0, sp, #16
bl COMMON_INTERCEPTOR_HANDLE_VFORK
.L_exit:
// Restore x30.
bl COMMON_INTERCEPTOR_SPILL_AREA
ldr x30, [x0]
ldp x0, xzr, [sp], 16
hint #29 // autiasp
ret
ASM_SIZE(vfork)
ASM_INTERCEPTOR_TRAMPOLINE(vfork)
ASM_TRAMPOLINE_ALIAS(vfork, vfork)
GNU_PROPERTY_BTI_PAC
#endif
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