// To apply, at the top of xnu.git:
// $ spatch --max-width=120 --use-gitgrep --in-place --include-headers --sp-file tools/cocci/hw_atomic_rewrite.cocci -dir .
//
// coccinelle insists on adding a space for (void) casts which can be fixed with:
// $ git grep -l 'os_atomic' | xargs -n1 sed -i '' -e 's/os_atomic/os_atomic/'

@@ expression E, F; @@ // hw_atomic_add -> os_atomic_{inc,dec}

(
- hw_atomic_add(E, -1) + 1
+ os_atomic_dec_orig(E, relaxed)
|
- hw_atomic_add(E, -1)
+ os_atomic_dec(E, relaxed)
|
- hw_atomic_add(E, -F) + F
+ os_atomic_sub_orig(E, F, relaxed)
|
- hw_atomic_add(E, -F)
+ os_atomic_sub(E, F, relaxed)
|
- hw_atomic_add(E, 1) - 1
+ os_atomic_inc_orig(E, relaxed)
|
- hw_atomic_add(E, 1)
+ os_atomic_inc(E, relaxed)
|
- hw_atomic_add(E, F) - F
+ os_atomic_add_orig(E, F, relaxed)
|
- hw_atomic_add(E, F)
+ os_atomic_add(E, F, relaxed)
)

@@ expression E, F; @@ // hw_atomic_sub -> os_atomic_{inc,dec}

(
- hw_atomic_sub(E, -1) - 1
+ os_atomic_inc_orig(E, relaxed)
|
- hw_atomic_sub(E, -1)
+ os_atomic_inc(E, relaxed)
|
- hw_atomic_sub(E, -F) - F
+ os_atomic_add_orig(E, F, relaxed)
|
- hw_atomic_sub(E, -F)
+ os_atomic_add(E, F, relaxed)
|
- hw_atomic_sub(E, 1) + 1
+ os_atomic_dec_orig(E, relaxed)
|
- hw_atomic_sub(E, 1)
+ os_atomic_dec(E, relaxed)
|
- hw_atomic_sub(E, F) + F
+ os_atomic_sub_orig(E, F, relaxed)
|
- hw_atomic_sub(E, F)
+ os_atomic_sub(E, F, relaxed)
)

@@ expression E, F; @@ // hw_atomic_and -> os_atomic_and

(
- hw_atomic_and(E, ~F)
+ os_atomic_andnot(E, F, relaxed)
|
- hw_atomic_and(E, F)
+ os_atomic_and(E, F, relaxed)
|
- hw_atomic_and_noret(E, ~F)
+ os_atomic_andnot(E, F, relaxed)
|
- hw_atomic_and_noret(E, F)
+ os_atomic_and(E, F, relaxed)
)

@@ expression E, F; @@ // hw_atomic_or -> os_atomic_or

(
- hw_atomic_or(E, F)
+ os_atomic_or(E, F, relaxed)
|
- hw_atomic_or_noret(E, F)
+ os_atomic_or(E, F, relaxed)
)

@@ expression E, F, A; @@ // hw_compare_and_store

(
- hw_compare_and_store(E, F, A)
+ os_atomic_cmpxchg(A, E, F, acq_rel)
)

// vim:ft=diff: