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|
(* $Id: PrintPPC.ml,v 1.2 2005/01/22 11:28:46 xleroy Exp $ *)
(* Printing PPC assembly code in asm syntax *)
open Printf
open Datatypes
open List
open Camlcoq
open AST
open PPC
(* On-the-fly label renaming *)
let next_label = ref 100
let new_label() =
let lbl = !next_label in incr next_label; lbl
let current_function_labels = (Hashtbl.create 39 : (label, int) Hashtbl.t)
let label_for_label lbl =
try
Hashtbl.find current_function_labels lbl
with Not_found ->
let lbl' = new_label() in
Hashtbl.add current_function_labels lbl lbl';
lbl'
(* Basic printing functions *)
let print_symb oc symb =
fprintf oc "_%s" (extern_atom symb)
let print_label oc lbl =
fprintf oc "L%d" (label_for_label lbl)
let print_symb_ofs oc (symb, ofs) =
print_symb oc symb;
if ofs <> 0l then fprintf oc " + %ld" ofs
let print_constant oc = function
| Cint n ->
fprintf oc "%ld" (camlint_of_coqint n)
| Csymbol_low_signed(s, n) ->
fprintf oc "lo16(%a)" print_symb_ofs (s, camlint_of_coqint n)
| Csymbol_high_signed(s, n) ->
fprintf oc "ha16(%a)" print_symb_ofs (s, camlint_of_coqint n)
| Csymbol_low_unsigned(s, n) ->
fprintf oc "lo16(%a)" print_symb_ofs (s, camlint_of_coqint n)
| Csymbol_high_unsigned(s, n) ->
fprintf oc "hi16(%a)" print_symb_ofs (s, camlint_of_coqint n)
let num_crbit = function
| CRbit_0 -> 0
| CRbit_1 -> 1
| CRbit_2 -> 2
| CRbit_3 -> 3
let print_crbit oc bit =
fprintf oc "%d" (num_crbit bit)
let print_coqint oc n =
fprintf oc "%ld" (camlint_of_coqint n)
let int_reg_name = function
| GPR0 -> "r0" | GPR1 -> "r1" | GPR2 -> "r2" | GPR3 -> "r3"
| GPR4 -> "r4" | GPR5 -> "r5" | GPR6 -> "r6" | GPR7 -> "r7"
| GPR8 -> "r8" | GPR9 -> "r9" | GPR10 -> "r10" | GPR11 -> "r11"
| GPR12 -> "r12" | GPR13 -> "r13" | GPR14 -> "r14" | GPR15 -> "r15"
| GPR16 -> "r16" | GPR17 -> "r17" | GPR18 -> "r18" | GPR19 -> "r19"
| GPR20 -> "r20" | GPR21 -> "r21" | GPR22 -> "r22" | GPR23 -> "r23"
| GPR24 -> "r24" | GPR25 -> "r25" | GPR26 -> "r26" | GPR27 -> "r27"
| GPR28 -> "r28" | GPR29 -> "r29" | GPR30 -> "r30" | GPR31 -> "r31"
let float_reg_name = function
| FPR0 -> "f0" | FPR1 -> "f1" | FPR2 -> "f2" | FPR3 -> "f3"
| FPR4 -> "f4" | FPR5 -> "f5" | FPR6 -> "f6" | FPR7 -> "f7"
| FPR8 -> "f8" | FPR9 -> "f9" | FPR10 -> "f10" | FPR11 -> "f11"
| FPR12 -> "f12" | FPR13 -> "f13" | FPR14 -> "f14" | FPR15 -> "f15"
| FPR16 -> "f16" | FPR17 -> "f17" | FPR18 -> "f18" | FPR19 -> "f19"
| FPR20 -> "f20" | FPR21 -> "f21" | FPR22 -> "f22" | FPR23 -> "f23"
| FPR24 -> "f24" | FPR25 -> "f25" | FPR26 -> "f26" | FPR27 -> "f27"
| FPR28 -> "f28" | FPR29 -> "f29" | FPR30 -> "f30" | FPR31 -> "f31"
let ireg oc r = output_string oc (int_reg_name r)
let ireg_or_zero oc r = if r = GPR0 then output_string oc "0" else ireg oc r
let freg oc r = output_string oc (float_reg_name r)
(* Printing of instructions *)
module Labelset = Set.Make(struct type t = label let compare = compare end)
let print_instruction oc labels = function
| Padd(r1, r2, r3) ->
fprintf oc " add %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Paddi(r1, r2, c) ->
fprintf oc " addi %a, %a, %a\n" ireg r1 ireg_or_zero r2 print_constant c
| Paddis(r1, r2, c) ->
fprintf oc " addis %a, %a, %a\n" ireg r1 ireg_or_zero r2 print_constant c
| Paddze(r1, r2) ->
fprintf oc " addze %a, %a\n" ireg r1 ireg r2
| Pallocframe(lo, hi) ->
let lo = camlint_of_coqint lo
and hi = camlint_of_coqint hi in
let nsz = Int32.neg (Int32.sub hi lo) in
fprintf oc " stwu r1, %ld(r1)\n" nsz
| Pand_(r1, r2, r3) ->
fprintf oc " and. %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pandc(r1, r2, r3) ->
fprintf oc " andc %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pandi_(r1, r2, c) ->
fprintf oc " andi. %a, %a, %a\n" ireg r1 ireg r2 print_constant c
| Pandis_(r1, r2, c) ->
fprintf oc " andis. %a, %a, %a\n" ireg r1 ireg r2 print_constant c
| Pb lbl ->
fprintf oc " b %a\n" print_label lbl
| Pbctr ->
fprintf oc " bctr\n"
| Pbctrl ->
fprintf oc " bctrl\n"
| Pbf(bit, lbl) ->
fprintf oc " bf %a, %a\n" print_crbit bit print_label lbl
| Pbl s ->
fprintf oc " bl %a\n" print_symb s
| Pblr ->
fprintf oc " blr\n"
| Pbt(bit, lbl) ->
fprintf oc " bt %a, %a\n" print_crbit bit print_label lbl
| Pcmplw(r1, r2) ->
fprintf oc " cmplw cr0, %a, %a\n" ireg r1 ireg r2
| Pcmplwi(r1, c) ->
fprintf oc " cmplwi cr0, %a, %a\n" ireg r1 print_constant c
| Pcmpw(r1, r2) ->
fprintf oc " cmpw cr0, %a, %a\n" ireg r1 ireg r2
| Pcmpwi(r1, c) ->
fprintf oc " cmpwi cr0, %a, %a\n" ireg r1 print_constant c
| Pcror(c1, c2, c3) ->
fprintf oc " cror %a, %a, %a\n" print_crbit c1 print_crbit c2 print_crbit c3
| Pdivw(r1, r2, r3) ->
fprintf oc " divw %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pdivwu(r1, r2, r3) ->
fprintf oc " divwu %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Peqv(r1, r2, r3) ->
fprintf oc " eqv %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pextsb(r1, r2) ->
fprintf oc " extsb %a, %a\n" ireg r1 ireg r2
| Pextsh(r1, r2) ->
fprintf oc " extsh %a, %a\n" ireg r1 ireg r2
| Pfreeframe ->
fprintf oc " lwz r1, 0(r1)\n"
| Pfabs(r1, r2) ->
fprintf oc " fabs %a, %a\n" freg r1 freg r2
| Pfadd(r1, r2, r3) ->
fprintf oc " fadd %a, %a, %a\n" freg r1 freg r2 freg r3
| Pfcmpu(r1, r2) ->
fprintf oc " fcmpu cr0, %a, %a\n" freg r1 freg r2
| Pfcti(r1, r2) ->
fprintf oc " fctiwz f13, %a\n" freg r2;
fprintf oc " stfdu f13, -8(r1)\n";
fprintf oc " lwz %a, 4(r1)\n" ireg r1;
fprintf oc " addi r1, r1, 8\n"
| Pfdiv(r1, r2, r3) ->
fprintf oc " fdiv %a, %a, %a\n" freg r1 freg r2 freg r3
| Pfmadd(r1, r2, r3, r4) ->
fprintf oc " fmadd %a, %a, %a, %a\n" freg r1 freg r2 freg r3 freg r4
| Pfmr(r1, r2) ->
fprintf oc " fmr %a, %a\n" freg r1 freg r2
| Pfmsub(r1, r2, r3, r4) ->
fprintf oc " fmsub %a, %a, %a, %a\n" freg r1 freg r2 freg r3 freg r4
| Pfmul(r1, r2, r3) ->
fprintf oc " fmul %a, %a, %a\n" freg r1 freg r2 freg r3
| Pfneg(r1, r2) ->
fprintf oc " fneg %a, %a\n" freg r1 freg r2
| Pfrsp(r1, r2) ->
fprintf oc " frsp %a, %a\n" freg r1 freg r2
| Pfsub(r1, r2, r3) ->
fprintf oc " fsub %a, %a, %a\n" freg r1 freg r2 freg r3
| Pictf(r1, r2) ->
let lbl = new_label() in
fprintf oc " addis r2, 0, 0x4330\n";
fprintf oc " stwu r2, -8(r1)\n";
fprintf oc " addis r2, %a, 0x8000\n" ireg r2;
fprintf oc " stw r2, 4(r1)\n";
fprintf oc " addis r2, 0, ha16(L%d)\n" lbl;
fprintf oc " lfd f13, lo16(L%d)(r2)\n" lbl;
fprintf oc " lfd %a, 0(r1)\n" freg r1;
fprintf oc " addi r1, r1, 8\n";
fprintf oc " fsub %a, %a, f13\n" freg r1 freg r1;
fprintf oc " .const_data\n";
fprintf oc "L%d: .long 0x43300000, 0x80000000\n" lbl;
fprintf oc " .text\n"
| Piuctf(r1, r2) ->
let lbl = new_label() in
fprintf oc " addis r2, 0, 0x4330\n";
fprintf oc " stwu r2, -8(r1)\n";
fprintf oc " stw %a, 4(r1)\n" ireg r2;
fprintf oc " addis r2, 0, ha16(L%d)\n" lbl;
fprintf oc " lfd f13, lo16(L%d)(r2)\n" lbl;
fprintf oc " lfd %a, 0(r1)\n" freg r1;
fprintf oc " addi r1, r1, 8\n";
fprintf oc " fsub %a, %a, f12\n" freg r1 freg r1;
fprintf oc " .const_data\n";
fprintf oc "L%d: .long 0x43300000, 0x00000000\n" lbl;
fprintf oc " .text\n"
| Plbz(r1, c, r2) ->
fprintf oc " lbz %a, %a(%a)\n" ireg r1 print_constant c ireg r2
| Plbzx(r1, r2, r3) ->
fprintf oc " lbzx %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Plfd(r1, c, r2) ->
fprintf oc " lfd %a, %a(%a)\n" freg r1 print_constant c ireg r2
| Plfdx(r1, r2, r3) ->
fprintf oc " lfdx %a, %a, %a\n" freg r1 ireg r2 ireg r3
| Plfi(r1, c) ->
let lbl = new_label() in
fprintf oc " addis r2, 0, ha16(L%d)\n" lbl;
fprintf oc " lfd %a, lo16(L%d)(r2)\n" freg r1 lbl;
fprintf oc " .const_data\n";
let n = Int64.bits_of_float c in
let nlo = Int64.to_int32 n
and nhi = Int64.to_int32(Int64.shift_right_logical n 32) in
fprintf oc "L%d: .long 0x%lx, 0x%lx ; %f\n" lbl nhi nlo c;
fprintf oc " .text\n"
| Plfs(r1, c, r2) ->
fprintf oc " lfs %a, %a(%a)\n" freg r1 print_constant c ireg r2
| Plfsx(r1, r2, r3) ->
fprintf oc " lfsx %a, %a, %a\n" freg r1 ireg r2 ireg r3
| Plha(r1, c, r2) ->
fprintf oc " lha %a, %a(%a)\n" ireg r1 print_constant c ireg r2
| Plhax(r1, r2, r3) ->
fprintf oc " lhax %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Plhz(r1, c, r2) ->
fprintf oc " lhz %a, %a(%a)\n" ireg r1 print_constant c ireg r2
| Plhzx(r1, r2, r3) ->
fprintf oc " lhzx %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Plwz(r1, c, r2) ->
fprintf oc " lwz %a, %a(%a)\n" ireg r1 print_constant c ireg r2
| Plwzx(r1, r2, r3) ->
fprintf oc " lwzx %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pmfcrbit(r1, bit) ->
fprintf oc " mfcr r2\n";
fprintf oc " rlwinm %a, r2, %d, 1\n" ireg r1 (1 + num_crbit bit)
| Pmflr(r1) ->
fprintf oc " mflr %a\n" ireg r1
| Pmr(r1, r2) ->
fprintf oc " mr %a, %a\n" ireg r1 ireg r2
| Pmtctr(r1) ->
fprintf oc " mtctr %a\n" ireg r1
| Pmtlr(r1) ->
fprintf oc " mtlr %a\n" ireg r1
| Pmulli(r1, r2, c) ->
fprintf oc " mulli %a, %a, %a\n" ireg r1 ireg r2 print_constant c
| Pmullw(r1, r2, r3) ->
fprintf oc " mullw %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pnand(r1, r2, r3) ->
fprintf oc " nand %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pnor(r1, r2, r3) ->
fprintf oc " nor %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Por(r1, r2, r3) ->
fprintf oc " or %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Porc(r1, r2, r3) ->
fprintf oc " orc %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pori(r1, r2, c) ->
fprintf oc " ori %a, %a, %a\n" ireg r1 ireg r2 print_constant c
| Poris(r1, r2, c) ->
fprintf oc " oris %a, %a, %a\n" ireg r1 ireg r2 print_constant c
| Prlwinm(r1, r2, c1, c2) ->
fprintf oc " rlwinm %a, %a, %ld, 0x%lx\n"
ireg r1 ireg r2 (camlint_of_coqint c1) (camlint_of_coqint c2)
| Pslw(r1, r2, r3) ->
fprintf oc " slw %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Psraw(r1, r2, r3) ->
fprintf oc " sraw %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Psrawi(r1, r2, c) ->
fprintf oc " srawi %a, %a, %ld\n" ireg r1 ireg r2 (camlint_of_coqint c)
| Psrw(r1, r2, r3) ->
fprintf oc " srw %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pstb(r1, c, r2) ->
fprintf oc " stb %a, %a(%a)\n" ireg r1 print_constant c ireg r2
| Pstbx(r1, r2, r3) ->
fprintf oc " stbx %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pstfd(r1, c, r2) ->
fprintf oc " stfd %a, %a(%a)\n" freg r1 print_constant c ireg r2
| Pstfdx(r1, r2, r3) ->
fprintf oc " stfdx %a, %a, %a\n" freg r1 ireg r2 ireg r3
| Pstfs(r1, c, r2) ->
fprintf oc " stfs %a, %a(%a)\n" freg r1 print_constant c ireg r2
| Pstfsx(r1, r2, r3) ->
fprintf oc " stfsx %a, %a, %a\n" freg r1 ireg r2 ireg r3
| Psth(r1, c, r2) ->
fprintf oc " sth %a, %a(%a)\n" ireg r1 print_constant c ireg r2
| Psthx(r1, r2, r3) ->
fprintf oc " sthx %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pstw(r1, c, r2) ->
fprintf oc " stw %a, %a(%a)\n" ireg r1 print_constant c ireg r2
| Pstwx(r1, r2, r3) ->
fprintf oc " stwx %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Psubfc(r1, r2, r3) ->
fprintf oc " subfc %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Psubfic(r1, r2, c) ->
fprintf oc " subfic %a, %a, %a\n" ireg r1 ireg r2 print_constant c
| Pxor(r1, r2, r3) ->
fprintf oc " xor %a, %a, %a\n" ireg r1 ireg r2 ireg r3
| Pxori(r1, r2, c) ->
fprintf oc " xori %a, %a, %a\n" ireg r1 ireg r2 print_constant c
| Pxoris(r1, r2, c) ->
fprintf oc " xoris %a, %a, %a\n" ireg r1 ireg r2 print_constant c
| Plabel lbl ->
if Labelset.mem lbl labels then fprintf oc "%a:\n" print_label lbl
| Piundef r ->
fprintf oc " # undef %a\n" ireg r
| Pfundef r ->
fprintf oc " # undef %a\n" freg r
let rec labels_of_code = function
| Coq_nil -> Labelset.empty
| Coq_cons((Pb lbl | Pbf(_, lbl) | Pbt(_, lbl)), c) ->
Labelset.add lbl (labels_of_code c)
| Coq_cons(_, c) -> labels_of_code c
let print_function oc (Coq_pair(name, code)) =
Hashtbl.clear current_function_labels;
fprintf oc " .text\n";
fprintf oc " .align 2\n";
fprintf oc " .globl %a\n" print_symb name;
fprintf oc "%a:\n" print_symb name;
coqlist_iter (print_instruction oc (labels_of_code code)) code
let print_var oc (Coq_pair(name, size)) =
fprintf oc " .globl %a\n" print_symb name;
fprintf oc "%a:\n" print_symb name;
fprintf oc " .space %ld\n" (camlint_of_z size)
let print_program oc p =
coqlist_iter (print_var oc) p.prog_vars;
coqlist_iter (print_function oc) p.prog_funct
|
