%% -*- erlang-indent-level: 2 -*-
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
-module(hipe_amd64_registers).
-export([
all_precoloured/0,
allocatable/0,
allocatable_sse2/0,
allocatable_x87/0,
arg/1,
args/1,
call_clobbered/0,
fcalls/0,
float_size/0,
first_virtual/0,
heap_limit/0,
is_arg/1,
is_fixed/1,
is_precoloured/1,
is_precoloured_sse2/1,
is_precoloured_x87/1,
live_at_return/0,
nr_args/0,
proc_offset/1,
proc_pointer/0,
rax/0,
rcx/0,
ret/1,
sp/0,
sp_limit_offset/0,
reg_name/1,
alignment/0,
tailcall_clobbered/0,
temp0/0,
temp1/0,
sse2_temp0/0,
%% fixed/0,
wordsize/0
]).
-include("../rtl/hipe_literals.hrl").
-ifdef(AMD64_HP_IN_REGISTER).
-export([heap_pointer/0]).
-endif.
-ifdef(AMD64_FCALLS_IN_REGISTER).
fcalls_offset() -> false.
-else.
fcalls_offset() -> ?P_FCALLS.
-define(AMD64_FCALLS_REGISTER,16).
-endif.
-ifdef(AMD64_HEAP_LIMIT_IN_REGISTER).
heap_limit_offset() -> false.
-else.
-define(AMD64_HEAP_LIMIT_REGISTER, 17).
heap_limit_offset() -> ?P_HP_LIMIT.
-endif.
-define(RAX, 0).
-define(RCX, 1).
-define(RDX, 2).
-define(RBX, 3).
-define(RSP, 4).
-define(RBP, 5).
-define(RSI, 6).
-define(RDI, 7).
-define(R8 , 8).
-define(R9 , 9).
-define(R10, 10).
-define(R11, 11).
-define(R12, 12).
-define(R13, 13).
-define(R14, 14).
-define(R15, 15).
-define(FCALLS, ?AMD64_FCALLS_REGISTER).
-define(HEAP_LIMIT, ?AMD64_HEAP_LIMIT_REGISTER).
-define(LAST_PRECOLOURED, 17).
-define(ARG0, ?RSI).
-define(ARG1, ?RDX).
-define(ARG2, ?RCX).
-define(ARG3, ?R8).
-define(ARG4, ?R9).
-define(ARG5, ?RDI).
-define(TEMP0, ?R14).
-define(TEMP1, ?R13).
-define(SSE2_TEMP0, 00).
-define(PROC_POINTER, ?RBP).
reg_name(R) ->
case R of
?RAX -> "%rax";
?RCX -> "%rcx";
?RDX -> "%rdx";
?RBX -> "%rbx";
?RSP -> "%rsp";
?RBP -> "%rbp";
?RSI -> "%rsi";
?RDI -> "%rdi";
?FCALLS -> "%fcalls";
?HEAP_LIMIT -> "%hplim";
Other -> "%r" ++ integer_to_list(Other)
end.
alignment() -> 8.
float_size() -> 8.
first_virtual() -> ?LAST_PRECOLOURED + 1.
is_precoloured(X) -> X =< ?LAST_PRECOLOURED.
is_precoloured_sse2(X) -> X =< 15.
is_precoloured_x87(X) -> X =< 6.
all_precoloured() ->
[?RAX,
?RCX,
?RDX,
?RBX,
?RSP,
?RBP,
?RSI,
?RDI,
?R8 ,
?R9 ,
?R10,
?R11,
?R12,
?R13,
?R14,
?R15,
?FCALLS,
?HEAP_LIMIT].
rax() -> ?RAX.
rcx() -> ?RCX.
temp0() -> ?TEMP0.
temp1() -> ?TEMP1.
sp() -> ?RSP.
proc_pointer() -> ?PROC_POINTER.
fcalls() -> ?FCALLS.
heap_limit() -> ?HEAP_LIMIT.
-ifdef(AMD64_HP_IN_REGISTER).
-define(HEAP_POINTER, ?AMD64_HEAP_POINTER).
heap_pointer() -> ?HEAP_POINTER.
-define(LIST_HP_LIVE_AT_RETURN,[{?HEAP_POINTER,untagged}]).
is_heap_pointer(?HEAP_POINTER) -> true;
is_heap_pointer(_) -> false.
%% -define(LIST_HP_FIXED,[?HEAP_POINTER]).
-else.
-define(HEAP_POINTER, -1).
is_heap_pointer(_) -> false.
%% -define(LIST_HP_FIXED,[]).
-define(LIST_HP_LIVE_AT_RETURN,[]).
-endif.
proc_offset(?FCALLS) -> fcalls_offset();
proc_offset(?HEAP_LIMIT) -> heap_limit_offset();
proc_offset(_) -> false.
sp_limit_offset() -> ?P_NSP_LIMIT.
is_fixed(?RSP) -> true;
is_fixed(?PROC_POINTER) -> true;
is_fixed(?FCALLS) -> true;
is_fixed(?HEAP_LIMIT) -> true;
is_fixed(R) -> is_heap_pointer(R).
%% fixed() ->
%% [?ESP, ?PROC_POINTER, ?FCALLS, ?HEAP_LIMIT | ?LIST_HP_FIXED].
allocatable() ->
[?RDX, ?RCX, ?RBX, ?RAX, ?RSI, ?RDI,
?R8 , ?R9 , ?R10, ?R11, ?R12, ?R13, ?R14, ?R15]
-- [?FCALLS, ?HEAP_POINTER, ?HEAP_LIMIT].
allocatable_sse2() ->
[00,01,02,03,04,05,06,07,08,09,10,11,12,13,14,15]. %% xmm0 - xmm15
sse2_temp0() -> ?SSE2_TEMP0.
allocatable_x87() ->
[0,1,2,3,4,5,6].
nr_args() -> ?AMD64_NR_ARG_REGS.
arg(N) when N < ?AMD64_NR_ARG_REGS ->
case N of
0 -> ?ARG0;
1 -> ?ARG1;
2 -> ?ARG2;
3 -> ?ARG3;
4 -> ?ARG4;
5 -> ?ARG5
end.
is_arg(R) ->
case R of
?ARG0 -> ?AMD64_NR_ARG_REGS > 0;
?ARG1 -> ?AMD64_NR_ARG_REGS > 1;
?ARG2 -> ?AMD64_NR_ARG_REGS > 2;
?ARG3 -> ?AMD64_NR_ARG_REGS > 3;
?ARG4 -> ?AMD64_NR_ARG_REGS > 4;
?ARG5 -> ?AMD64_NR_ARG_REGS > 5;
_ -> false
end.
args(Arity) when is_integer(Arity), Arity >= 0 ->
N = erlang:min(Arity, ?AMD64_NR_ARG_REGS),
args(N-1, []).
args(I, Rest) when I < 0 -> Rest;
args(I, Rest) -> args(I-1, [arg(I) | Rest]).
ret(0) -> ?RAX.
%% Note: the fact that (allocatable() UNION allocatable_x87() UNION
%% allocatable_sse2()) is a subset of call_clobbered() is hard-coded in
%% hipe_x86_defuse:insn_defs_all/1
call_clobbered() ->
[{?RAX,tagged},{?RAX,untagged}, % does the RA strip the type or not?
{?RDX,tagged},{?RDX,untagged},
{?RCX,tagged},{?RCX,untagged},
{?RBX,tagged},{?RBX,untagged},
{?RDI,tagged},{?RDI,untagged},
{?RSI,tagged},{?RSI,untagged},
{?R8 ,tagged},{?R8 ,untagged},
{?R9 ,tagged},{?R9 ,untagged},
{?R10,tagged},{?R10,untagged},
{?R11,tagged},{?R11,untagged},
{?R12,tagged},{?R12,untagged},
{?R13,tagged},{?R13,untagged},
{?R14,tagged},{?R14,untagged},
{?R15,tagged},{?R15,untagged}
| fp_call_clobbered()]
--
[{?FCALLS,tagged},{?FCALLS,untagged},
{?HEAP_POINTER,tagged},{?HEAP_POINTER,untagged},
{?HEAP_LIMIT,tagged},{?HEAP_LIMIT,untagged}
].
fp_call_clobbered() -> %% sse2 since it has more registers than x87
[{Reg,double} || Reg <- allocatable_sse2()].
tailcall_clobbered() -> % tailcall crapola needs two temps
[{?TEMP0,tagged},{?TEMP0,untagged},
{?TEMP1,tagged},{?TEMP1,untagged}
| fp_call_clobbered()].
live_at_return() ->
[{?RSP,untagged}
,{?PROC_POINTER,untagged}
,{?FCALLS,untagged}
,{?HEAP_LIMIT,untagged}
| ?LIST_HP_LIVE_AT_RETURN
].
wordsize() -> 8.
