diff options
Diffstat (limited to 'powerpc/Asmexpand.ml')
-rw-r--r-- | powerpc/Asmexpand.ml | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/powerpc/Asmexpand.ml b/powerpc/Asmexpand.ml index 5e26e8a6..23c66382 100644 --- a/powerpc/Asmexpand.ml +++ b/powerpc/Asmexpand.ml @@ -506,20 +506,23 @@ let expand_builtin_inline name args res = emit (Pisync); emit (Pstw (a1,Cint _0, a2)); | "__builtin_sync_fetch_and_add", [BA (IR a1); BA(IR a2)], BR (IR res) -> - let tmpres = if a1 = res then - GPR11 - else - res in let lbl = new_label() in emit (Psync); emit (Plabel lbl); - emit (Plwarx (tmpres,GPR0,a1)); - emit (Padd (a2,tmpres,a2)); - emit (Pstwcx_ (a2,GPR0,a1)); + emit (Plwarx (res,GPR0,a1)); + emit (Padd (GPR10,res,a2)); + emit (Pstwcx_ (GPR10,GPR0,a1)); + emit (Pbne lbl); + emit (Pisync); + | "__builtin_sync_fetch_and_add", [BA (IR a1); BA(IR a2)], BR_none -> + let lbl = new_label() in + emit (Psync); + emit (Plabel lbl); + emit (Plwarx (GPR3,GPR0,a1)); + emit (Padd (GPR10,GPR3,a2)); + emit (Pstwcx_ (GPR10,GPR0,a1)); emit (Pbne lbl); emit (Pisync); - if (tmpres <> res) then - emit (Pmr (res,tmpres)) | "__builtin_atomic_compare_exchange", [BA (IR dst); BA(IR exp); BA (IR des)], BR (IR res) -> let lbls = new_label () and lblneq = new_label () @@ -542,6 +545,27 @@ let expand_builtin_inline name args res = emit (Pstw (GPR12,(Cint _0),exp)); emit (Plabel lblsucc); emit (Pmr (res,dst)); + | "__builtin_atomic_compare_exchange", [BA (IR dst); BA(IR exp); BA (IR des)], BR_none -> + let lbls = new_label () + and lblneq = new_label () + and lblsucc = new_label () in + emit (Plwz (GPR10,Cint _0,exp)); + emit (Plwz (GPR11,Cint _0,des)); + emit (Psync); + emit (Plabel lbls); + emit (Plwarx (GPR12,GPR0,dst)); + emit (Pcmpw (GPR12,GPR10)); + emit (Pbne lblneq); + emit (Pstwcx_ (GPR11,GPR0,dst)); + emit (Pbne lbls); + emit (Plabel lblneq); + emit (Pisync); + emit (Pmfcr dst); + emit (Prlwinm (dst,dst,(Z.of_uint 3),_1)); + emit (Pcmpwi (dst,(Cint _0))); + emit (Pbne lblsucc); + emit (Pstw (GPR12,(Cint _0),exp)); + emit (Plabel lblsucc); (* Catch-all *) | _ -> raise (Error ("unrecognized builtin " ^ name)) |