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#if defined(__arm__) && defined(__linux__)
#include "sanitizer_common/sanitizer_asm.h"
ASM_HIDDEN(COMMON_INTERCEPTOR_SPILL_AREA)
.comm _ZN14__interception10real_vforkE,4,4
.globl ASM_WRAPPER_NAME(vfork)
ASM_TYPE_FUNCTION(ASM_WRAPPER_NAME(vfork))
ASM_WRAPPER_NAME(vfork):
// Save LR in the off-stack spill area.
push {r4, lr}
bl COMMON_INTERCEPTOR_SPILL_AREA
pop {r4, lr}
str lr, [r0]
// 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.
ldr r0, .LCPI0_0
.LPC0_0:
ldr r0, [pc, r0]
mov lr, pc
bx r0
push {r0, r4}
cmp r0, #0
beq .L_exit
// r0 != 0 => parent process. Clear stack shadow.
add r0, sp, #8
bl COMMON_INTERCEPTOR_HANDLE_VFORK
.L_exit:
// Restore LR.
bl COMMON_INTERCEPTOR_SPILL_AREA
ldr lr, [r0]
pop {r0, r4}
mov pc, lr
.LCPI0_0:
.long _ZN14__interception10real_vforkE - (.LPC0_0+8)
ASM_SIZE(vfork)
.weak vfork
.set vfork, ASM_WRAPPER_NAME(vfork)
#endif
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