Attribute Macro phys_mem_before_write 

#[phys_mem_before_write]

(Callback) Called before memory is written.

Callback ID: PANDA_CB_PHYS_MEM_BEFORE_WRITE

   Arguments:
    CPUState *env:     the current CPU state
    target_ptr_t pc:   the guest PC doing the write
    target_ptr_t addr: the (physical) address being written
    size_t size:       the size of the write
    uint8_t *buf:      pointer to the data that is to be written

   Helper call location: TBA

   Return value:
    none

Callback arguments: (&mut CPUState, target_ptr_t, target_ptr_t, usize, *mut u8, )

Example

use panda::prelude::*;

#[panda::phys_mem_before_write]
fn callback(_: &mut CPUState, _: target_ptr_t, _: target_ptr_t, _: usize, _: *mut u8, ) {
    // do stuff
}