From d1b5848cac51fc63723cdecb857f520caa0b27a2 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Tue, 29 May 2012 20:47:07 +0100
Subject: [PATCH 06/19] Add support for ppc64.
Note (1): This patch was rejected upstream because they don't have
appropriate hardware for testing.
Note (2): Upstream powerpc directory has some support for ppc64, but
only for Macs, and I couldn't get it to work at all with IBM hardware.
This patch was collaborated on by several people, most notably
David Woodhouse.
Includes fix for position of stack arguments to external C functions
when there are more than 8 parameters (RHBZ#829187).
Includes fix for minor heap corruption because of unaligned minor heap
register (RHBZ#826649).
Includes updates for OCaml 4.01.0.
---
asmcomp/power64/arch.ml | 88 ++++
asmcomp/power64/emit.mlp | 988 ++++++++++++++++++++++++++++++++++++++++++
asmcomp/power64/proc.ml | 240 ++++++++++
asmcomp/power64/reload.ml | 18 +
asmcomp/power64/scheduling.ml | 65 +++
asmcomp/power64/selection.ml | 101 +++++
asmrun/Makefile | 6 +
asmrun/power64-elf.S | 486 +++++++++++++++++++++
asmrun/stack.h | 9 +
configure | 3 +
10 files changed, 2004 insertions(+)
create mode 100644 asmcomp/power64/arch.ml
create mode 100644 asmcomp/power64/emit.mlp
create mode 100644 asmcomp/power64/proc.ml
create mode 100644 asmcomp/power64/reload.ml
create mode 100644 asmcomp/power64/scheduling.ml
create mode 100644 asmcomp/power64/selection.ml
create mode 100644 asmrun/power64-elf.S
diff --git a/asmcomp/power64/arch.ml b/asmcomp/power64/arch.ml
new file mode 100644
index 0000000..73c516d
--- /dev/null
+++ b/asmcomp/power64/arch.ml
@@ -0,0 +1,88 @@
+(***********************************************************************)
+(* *)
+(* Objective Caml *)
+(* *)
+(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
+(* *)
+(* Copyright 1996 Institut National de Recherche en Informatique et *)
+(* en Automatique. All rights reserved. This file is distributed *)
+(* under the terms of the Q Public License version 1.0. *)
+(* *)
+(***********************************************************************)
+
+(* $Id: arch.ml 9547 2010-01-22 12:48:24Z doligez $ *)
+
+(* Specific operations for the PowerPC processor *)
+
+open Format
+
+(* Machine-specific command-line options *)
+
+let command_line_options = []
+
+(* Specific operations *)
+
+type specific_operation =
+ Imultaddf (* multiply and add *)
+ | Imultsubf (* multiply and subtract *)
+ | Ialloc_far of int (* allocation in large functions *)
+
+(* Addressing modes *)
+
+type addressing_mode =
+ Ibased of string * int (* symbol + displ *)
+ | Iindexed of int (* reg + displ *)
+ | Iindexed2 (* reg + reg *)
+
+(* Sizes, endianness *)
+
+let big_endian = true
+
+let size_addr = 8
+let size_int = size_addr
+let size_float = 8
+
+let allow_unaligned_access = false
+
+(* Behavior of division *)
+
+let division_crashes_on_overflow = false
+
+(* Operations on addressing modes *)
+
+let identity_addressing = Iindexed 0
+
+let offset_addressing addr delta =
+ match addr with
+ Ibased(s, n) -> Ibased(s, n + delta)
+ | Iindexed n -> Iindexed(n + delta)
+ | Iindexed2 -> assert false
+
+let num_args_addressing = function
+ Ibased(s, n) -> 0
+ | Iindexed n -> 1
+ | Iindexed2 -> 2
+
+(* Printing operations and addressing modes *)
+
+let print_addressing printreg addr ppf arg =
+ match addr with
+ | Ibased(s, n) ->
+ let idx = if n <> 0 then Printf.sprintf " + %i" n else "" in
+ fprintf ppf "\"%s\"%s" s idx
+ | Iindexed n ->
+ let idx = if n <> 0 then Printf.sprintf " + %i" n else "" in
+ fprintf ppf "%a%s" printreg arg.(0) idx
+ | Iindexed2 ->
+ fprintf ppf "%a + %a" printreg arg.(0) printreg arg.(1)
+
+let print_specific_operation printreg op ppf arg =
+ match op with
+ | Imultaddf ->
+ fprintf ppf "%a *f %a +f %a"
+ printreg arg.(0) printreg arg.(1) printreg arg.(2)
+ | Imultsubf ->
+ fprintf ppf "%a *f %a -f %a"
+ printreg arg.(0) printreg arg.(1) printreg arg.(2)
+ | Ialloc_far n ->
+ fprintf ppf "alloc_far %d" n
diff --git a/asmcomp/power64/emit.mlp b/asmcomp/power64/emit.mlp
new file mode 100644
index 0000000..d84ac5c
--- /dev/null
+++ b/asmcomp/power64/emit.mlp
@@ -0,0 +1,988 @@
+(***********************************************************************)
+(* *)
+(* Objective Caml *)
+(* *)
+(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
+(* *)
+(* Copyright 1996 Institut National de Recherche en Informatique et *)
+(* en Automatique. All rights reserved. This file is distributed *)
+(* under the terms of the Q Public License version 1.0. *)
+(* *)
+(***********************************************************************)
+
+(* $Id: emit.mlp 9547 2010-01-22 12:48:24Z doligez $ *)
+
+(* Emission of PowerPC assembly code *)
+
+module StringSet = Set.Make(struct type t = string let compare = compare end)
+
+open Misc
+open Cmm
+open Arch
+open Proc
+open Reg
+open Mach
+open Linearize
+open Emitaux
+
+(* Layout of the stack. The stack is kept 16-aligned. *)
+
+let stack_size_lbl = ref 0
+let stack_slot_lbl = ref 0
+let stack_args_size = ref 0
+let stack_traps_size = ref 0
+
+(* We have a stack frame of our own if we call other functions (including
+ use of exceptions, or if we need more than the red zone *)
+let has_stack_frame () =
+ if !contains_calls || (num_stack_slots.(0) + num_stack_slots.(1)) > (288-16)/8 then
+ true
+ else
+ false
+
+let frame_size_sans_args () =
+ let size = 8 * num_stack_slots.(0) + 8 * num_stack_slots.(1) + 48 in
+ Misc.align size 16
+
+let slot_offset loc cls =
+ match loc with
+ Local n ->
+ if cls = 0
+ then (!stack_slot_lbl, num_stack_slots.(1) * 8 + n * 8)
+ else (!stack_slot_lbl, n * 8)
+ | Incoming n -> ((if has_stack_frame() then !stack_size_lbl else 0), 48 + n)
+ | Outgoing n -> (0, n)
+
+(* Output a symbol *)
+
+let emit_symbol =
+ match Config.system with
+ | "elf" | "bsd" -> (fun s -> Emitaux.emit_symbol '.' s)
+ | "rhapsody" -> (fun s -> emit_char '_'; Emitaux.emit_symbol '$' s)
+ | _ -> assert false
+
+(* Output a label *)
+
+let label_prefix =
+ match Config.system with
+ | "elf" | "bsd" -> ".L"
+ | "rhapsody" -> "L"
+ | _ -> assert false
+
+let emit_label lbl =
+ emit_string label_prefix; emit_int lbl
+
+(* Section switching *)
+
+let toc_space =
+ match Config.system with
+ | "elf" | "bsd" -> " .section \".toc\",\"aw\"\n"
+ | "rhapsody" -> " .toc\n"
+ | _ -> assert false
+
+let data_space =
+ match Config.system with
+ | "elf" | "bsd" -> " .section \".data\"\n"
+ | "rhapsody" -> " .data\n"
+ | _ -> assert false
+
+let code_space =
+ match Config.system with
+ | "elf" | "bsd" -> " .section \".text\"\n"
+ | "rhapsody" -> " .text\n"
+ | _ -> assert false
+
+let rodata_space =
+ match Config.system with
+ | "elf" | "bsd" -> " .section \".rodata\"\n"
+ | "rhapsody" -> " .const\n"
+ | _ -> assert false
+
+(* Output a pseudo-register *)
+
+let emit_reg r =
+ match r.loc with
+ Reg r -> emit_string (register_name r)
+ | _ -> fatal_error "Emit.emit_reg"
+
+let use_full_regnames =
+ Config.system = "rhapsody"
+
+let emit_gpr r =
+ if use_full_regnames then emit_char 'r';
+ emit_int r
+
+let emit_fpr r =
+ if use_full_regnames then emit_char 'f';
+ emit_int r
+
+let emit_ccr r =
+ if use_full_regnames then emit_string "cr";
+ emit_int r
+
+(* Output a stack reference *)
+
+let emit_stack r =
+ match r.loc with
+ Stack s ->
+ let lbl, ofs = slot_offset s (register_class r) in
+ if lbl > 0 then
+ `{emit_label lbl}+`;
+ `{emit_int ofs}({emit_gpr 1})`
+ | _ -> fatal_error "Emit.emit_stack"
+
+(* Split a 32-bit integer constants in two 16-bit halves *)
+
+let low n = n land 0xFFFF
+let high n = n asr 16
+
+let nativelow n = Nativeint.to_int n land 0xFFFF
+let nativehigh n = Nativeint.to_int (Nativeint.shift_right n 16)
+
+let is_immediate n =
+ n <= 32767 && n >= -32768
+
+let is_native_immediate n =
+ n <= 32767n && n >= -32768n
+
+
+type tocentry =
+ TocSymOfs of (string * int)
+ | TocLabel of int
+ | TocInt of nativeint
+ | TocFloat of string
+
+(* List of all labels in tocref (reverse order) *)
+let tocref_entries = ref []
+
+(* Output a TOC reference *)
+
+let emit_symbol_offset (s, d) =
+ emit_symbol s;
+ if d > 0 then `+`;
+ if d <> 0 then emit_int d
+
+let emit_tocentry entry =
+ match entry with
+ TocSymOfs(s,d) -> emit_symbol_offset(s,d)
+ | TocInt i -> emit_nativeint i
+ | TocFloat f -> emit_string f
+ | TocLabel lbl -> emit_label lbl
+
+ let rec tocref_label = function
+ ( [] , content ) ->
+ let lbl = new_label() in
+ tocref_entries := (lbl, content) :: !tocref_entries;
+ lbl
+ | ( (lbl, o_content) :: lst, content) ->
+ if content = o_content then
+ lbl
+ else
+ tocref_label (lst, content)
+
+let emit_tocref entry =
+ let lbl = tocref_label (!tocref_entries,entry) in
+ emit_label lbl; emit_string "@toc(2) #"; emit_tocentry entry
+
+
+(* Output a load or store operation *)
+
+let valid_offset instr ofs =
+ ofs land 3 = 0 || (instr <> "ld" && instr <> "std")
+
+let emit_load_store instr addressing_mode addr n arg =
+ match addressing_mode with
+ Ibased(s, d) ->
+ let dd = (d + 0x8000) in (* We can only offset by -0x8000 .. +0x7fff *)
+ let a = (dd land -0x10000) in
+ let b = (dd land 0xffff) - 0x8000 in
+ ` ld {emit_gpr 11}, {emit_tocref (TocSymOfs (s,a))}\n`;
+ ` {emit_string instr} {emit_reg arg}, {emit_int b}({emit_gpr 11})\n`
+ | Iindexed ofs ->
+ if is_immediate ofs && valid_offset instr ofs then
+ ` {emit_string instr} {emit_reg arg}, {emit_int ofs}({emit_reg addr.(n)})\n`
+ else begin
+ ` lis {emit_gpr 0}, {emit_int(high ofs)}\n`;
+ if low ofs <> 0 then
+ ` ori {emit_gpr 0}, {emit_gpr 0}, {emit_int(low ofs)}\n`;
+ ` {emit_string instr}x {emit_reg arg}, {emit_reg addr.(n)}, {emit_gpr 0}\n`
+ end
+ | Iindexed2 ->
+ ` {emit_string instr}x {emit_reg arg}, {emit_reg addr.(n)}, {emit_reg addr.(n+1)}\n`
+
+(* After a comparison, extract the result as 0 or 1 *)
+
+let emit_set_comp cmp res =
+ ` mfcr {emit_gpr 0}\n`;
+ let bitnum =
+ match cmp with
+ Ceq | Cne -> 2
+ | Cgt | Cle -> 1
+ | Clt | Cge -> 0 in
+` rlwinm {emit_reg res}, {emit_gpr 0}, {emit_int(bitnum+1)}, 31, 31\n`;
+ begin match cmp with
+ Cne | Cle | Cge -> ` xori {emit_reg res}, {emit_reg res}, 1\n`
+ | _ -> ()
+ end
+
+(* Record live pointers at call points *)
+
+type frame_descr =
+ { fd_lbl: int; (* Return address *)
+ fd_frame_size_lbl: int; (* Size of stack frame *)
+ fd_live_offset: (int * int) list } (* Offsets/regs of live addresses *)
+
+let frame_descriptors = ref([] : frame_descr list)
+
+let record_frame live =
+ let lbl = new_label() in
+ let live_offset = ref [] in
+ Reg.Set.iter
+ (function
+ {typ = Addr; loc = Reg r} ->
+ live_offset := (0, (r lsl 1) + 1) :: !live_offset
+ | {typ = Addr; loc = Stack s} as reg ->
+ live_offset := slot_offset s (register_class reg) :: !live_offset
+ | _ -> ())
+ live;
+ frame_descriptors :=
+ { fd_lbl = lbl;
+ fd_frame_size_lbl = !stack_size_lbl; (* frame_size *)
+ fd_live_offset = !live_offset } :: !frame_descriptors;
+ `{emit_label lbl}:\n`
+
+let emit_frame fd =
+ ` .quad {emit_label fd.fd_lbl} + 4\n`;
+ ` .short {emit_label fd.fd_frame_size_lbl}\n`;
+ ` .short {emit_int (List.length fd.fd_live_offset)}\n`;
+ List.iter
+ (fun (lbl,n) ->
+ ` .short `;
+ if lbl > 0 then `{emit_label lbl}+`;
+ `{emit_int n}\n`)
+ fd.fd_live_offset;
+ ` .align 3\n`
+
+(* Record external C functions to be called in a position-independent way
+ (for MacOSX) *)
+
+let pic_externals = (Config.system = "rhapsody")
+
+let external_functions = ref StringSet.empty
+
+let emit_external s =
+ ` .non_lazy_symbol_pointer\n`;
+ `L{emit_symbol s}$non_lazy_ptr:\n`;
+ ` .indirect_symbol {emit_symbol s}\n`;
+ ` .quad 0\n`
+
+(* Names for conditional branches after comparisons *)
+
+let branch_for_comparison = function
+ Ceq -> "beq" | Cne -> "bne"
+ | Cle -> "ble" | Cgt -> "bgt"
+ | Cge -> "bge" | Clt -> "blt"
+
+let name_for_int_comparison = function
+ Isigned cmp -> ("cmpd", branch_for_comparison cmp)
+ | Iunsigned cmp -> ("cmpld", branch_for_comparison cmp)
+
+(* Names for various instructions *)
+
+let name_for_intop = function
+ Iadd -> "add"
+ | Imul -> "mulld"
+ | Idiv -> "divd"
+ | Iand -> "and"
+ | Ior -> "or"
+ | Ixor -> "xor"
+ | Ilsl -> "sld"
+ | Ilsr -> "srd"
+ | Iasr -> "srad"
+ | _ -> Misc.fatal_error "Emit.Intop"
+
+let name_for_intop_imm = function
+ Iadd -> "addi"
+ | Imul -> "mulli"
+ | Iand -> "andi."
+ | Ior -> "ori"
+ | Ixor -> "xori"
+ | Ilsl -> "sldi"
+ | Ilsr -> "srdi"
+ | Iasr -> "sradi"
+ | _ -> Misc.fatal_error "Emit.Intop_imm"
+
+let name_for_floatop1 = function
+ Inegf -> "fneg"
+ | Iabsf -> "fabs"
+ | _ -> Misc.fatal_error "Emit.Iopf1"
+
+let name_for_floatop2 = function
+ Iaddf -> "fadd"
+ | Isubf -> "fsub"
+ | Imulf -> "fmul"
+ | Idivf -> "fdiv"
+ | _ -> Misc.fatal_error "Emit.Iopf2"
+
+let name_for_specific = function
+ Imultaddf -> "fmadd"
+ | Imultsubf -> "fmsub"
+ | _ -> Misc.fatal_error "Emit.Ispecific"
+
+(* Name of current function *)
+let function_name = ref ""
+(* Entry point for tail recursive calls *)
+let tailrec_entry_point = ref 0
+(* Names of functions defined in the current file *)
+let defined_functions = ref StringSet.empty
+(* Label of glue code for calling the GC *)
+let call_gc_label = ref 0
+(* Label of jump table *)
+let lbl_jumptbl = ref 0
+(* List of all labels in jumptable (reverse order) *)
+let jumptbl_entries = ref []
+(* Number of jumptable entries *)
+let num_jumptbl_entries = ref 0
+
+(* Fixup conditional branches that exceed hardware allowed range *)
+
+let load_store_size = function
+ Ibased(s, d) -> 2
+ | Iindexed ofs -> if is_immediate ofs then 1 else 3
+ | Iindexed2 -> 1
+
+let instr_size = function
+ Lend -> 0
+ | Lop(Imove | Ispill | Ireload) -> 1
+ | Lop(Iconst_int n) -> if is_native_immediate n then 1 else 2
+ | Lop(Iconst_float s) -> 2
+ | Lop(Iconst_symbol s) -> 2
+ | Lop(Icall_ind) -> 6
+ | Lop(Icall_imm s) -> 7
+ | Lop(Itailcall_ind) -> if !contains_calls then 7 else if has_stack_frame() then 5 else 4
+ | Lop(Itailcall_imm s) -> if s = !function_name then 1 else
+ if !contains_calls then 8 else
+ if has_stack_frame() then 6 else 5
+ | Lop(Iextcall(s, true)) -> 8
+ | Lop(Iextcall(s, false)) -> 7
+ | Lop(Istackoffset n) -> 0
+ | Lop(Iload(chunk, addr)) ->
+ if chunk = Byte_signed
+ then load_store_size addr + 1
+ else load_store_size addr
+ | Lop(Istore(chunk, addr)) -> load_store_size addr
+ | Lop(Ialloc n) -> 4
+ | Lop(Ispecific(Ialloc_far n)) -> 5
+ | Lop(Iintop Imod) -> 3
+ | Lop(Iintop(Icomp cmp)) -> 4
+ | Lop(Iintop op) -> 1
+ | Lop(Iintop_imm(Idiv, n)) -> 2
+ | Lop(Iintop_imm(Imod, n)) -> 4
+ | Lop(Iintop_imm(Icomp cmp, n)) -> 4
+ | Lop(Iintop_imm(op, n)) -> 1
+ | Lop(Inegf | Iabsf | Iaddf | Isubf | Imulf | Idivf) -> 1
+ | Lop(Ifloatofint) -> 3
+ | Lop(Iintoffloat) -> 3
+ | Lop(Ispecific sop) -> 1
+ | Lreloadretaddr -> 2
+ | Lreturn -> if has_stack_frame() then 2 else 1
+ | Llabel lbl -> 0
+ | Lbranch lbl -> 1
+ | Lcondbranch(tst, lbl) -> 2
+ | Lcondbranch3(lbl0, lbl1, lbl2) ->
+ 1 + (if lbl0 = None then 0 else 1)
+ + (if lbl1 = None then 0 else 1)
+ + (if lbl2 = None then 0 else 1)
+ | Lswitch jumptbl -> 7
+ | Lsetuptrap lbl -> 1
+ | Lpushtrap -> 7
+ | Lpoptrap -> 1
+ | Lraise -> 6
+
+let label_map code =
+ let map = Hashtbl.create 37 in
+ let rec fill_map pc instr =
+ match instr.desc with
+ Lend -> (pc, map)
+ | Llabel lbl -> Hashtbl.add map lbl pc; fill_map pc instr.next
+ | op -> fill_map (pc + instr_size op) instr.next
+ in fill_map 0 code
+
+let max_branch_offset = 8180
+(* 14-bit signed offset in words. Remember to cut some slack
+ for multi-word instructions where the branch can be anywhere in
+ the middle. 12 words of slack is plenty. *)
+
+let branch_overflows map pc_branch lbl_dest =
+ let pc_dest = Hashtbl.find map lbl_dest in
+ let delta = pc_dest - (pc_branch + 1) in
+ delta <= -max_branch_offset || delta >= max_branch_offset
+
+let opt_branch_overflows map pc_branch opt_lbl_dest =
+ match opt_lbl_dest with
+ None -> false
+ | Some lbl_dest -> branch_overflows map pc_branch lbl_dest
+
+let fixup_branches codesize map code =
+ let expand_optbranch lbl n arg next =
+ match lbl with
+ None -> next
+ | Some l ->
+ instr_cons (Lcondbranch(Iinttest_imm(Isigned Ceq, n), l))
+ arg [||] next in
+ let rec fixup did_fix pc instr =
+ match instr.desc with
+ Lend -> did_fix
+ | Lcondbranch(test, lbl) when branch_overflows map pc lbl ->
+ let lbl2 = new_label() in
+ let cont =
+ instr_cons (Lbranch lbl) [||] [||]
+ (instr_cons (Llabel lbl2) [||] [||] instr.next) in
+ instr.desc <- Lcondbranch(invert_test test, lbl2);
+ instr.next <- cont;
+ fixup true (pc + 2) instr.next
+ | Lcondbranch3(lbl0, lbl1, lbl2)
+ when opt_branch_overflows map pc lbl0
+ || opt_branch_overflows map pc lbl1
+ || opt_branch_overflows map pc lbl2 ->
+ let cont =
+ expand_optbranch lbl0 0 instr.arg
+ (expand_optbranch lbl1 1 instr.arg
+ (expand_optbranch lbl2 2 instr.arg instr.next)) in
+ instr.desc <- cont.desc;
+ instr.next <- cont.next;
+ fixup true pc instr
+ | Lop(Ialloc n) when codesize - pc >= max_branch_offset ->
+ instr.desc <- Lop(Ispecific(Ialloc_far n));
+ fixup true (pc + 4) instr.next
+ | op ->
+ fixup did_fix (pc + instr_size op) instr.next
+ in fixup false 0 code
+
+(* Iterate branch expansion till all conditional branches are OK *)
+
+let rec branch_normalization code =
+ let (codesize, map) = label_map code in
+ if codesize >= max_branch_offset && fixup_branches codesize map code
+ then branch_normalization code
+ else ()
+
+
+(* Output the assembly code for an instruction *)
+
+let rec emit_instr i dslot =
+ match i.desc with
+ Lend -> ()
+ | Lop(Imove | Ispill | Ireload) ->
+ let src = i.arg.(0) and dst = i.res.(0) in
+ if src.loc <> dst.loc then begin
+ match (src, dst) with
+ {loc = Reg rs; typ = (Int | Addr)}, {loc = Reg rd} ->
+ ` mr {emit_reg dst}, {emit_reg src}\n`
+ | {loc = Reg rs; typ = Float}, {loc = Reg rd; typ = Float} ->
+ ` fmr {emit_reg dst}, {emit_reg src}\n`
+ | {loc = Reg rs; typ = (Int | Addr)}, {loc = Stack sd} ->
+ ` std {emit_reg src}, {emit_stack dst}\n`
+ | {loc = Reg rs; typ = Float}, {loc = Stack sd} ->
+ ` stfd {emit_reg src}, {emit_stack dst}\n`
+ | {loc = Stack ss; typ = (Int | Addr)}, {loc = Reg rd} ->
+ ` ld {emit_reg dst}, {emit_stack src}\n`
+ | {loc = Stack ss; typ = Float}, {loc = Reg rd} ->
+ ` lfd {emit_reg dst}, {emit_stack src}\n`
+ | (_, _) ->
+ fatal_error "Emit: Imove"
+ end
+ | Lop(Iconst_int n) ->
+ if is_native_immediate n then
+ ` li {emit_reg i.res.(0)}, {emit_nativeint n}\n`
+ else if n >= -0x8000_0000n && n <= 0x7FFF_FFFFn then begin
+ ` lis {emit_reg i.res.(0)}, {emit_int(nativehigh n)}\n`;
+ if nativelow n <> 0 then
+ ` ori {emit_reg i.res.(0)}, {emit_reg i.res.(0)}, {emit_int(nativelow n)}\n`
+ end else begin
+ ` ld {emit_reg i.res.(0)}, {emit_tocref (TocInt n)}\n`
+ end
+ | Lop(Iconst_float s) ->
+ ` lfd {emit_reg i.res.(0)}, {emit_tocref (TocFloat s)}\n`
+ | Lop(Iconst_symbol s) ->
+ ` ld {emit_reg i.res.(0)}, {emit_tocref (TocSymOfs (s,0))}\n`
+ | Lop(Icall_ind) ->
+ ` std {emit_gpr 2},40({emit_gpr 1})\n`;
+ ` ld {emit_gpr 2}, 8({emit_reg i.arg.(0)})\n`;
+ ` ld {emit_reg i.arg.(0)}, 0({emit_reg i.arg.(0)})\n`;
+ ` mtctr {emit_reg i.arg.(0)}\n`;
+ record_frame i.live;
+ ` bctrl\n`;
+ ` ld {emit_gpr 2},40({emit_gpr 1})\n`
+ | Lop(Icall_imm s) ->
+ ` ld {emit_gpr 11}, {emit_tocref (TocSymOfs (s,0))}\n`;
+ ` std {emit_gpr 2},40({emit_gpr 1})\n`;
+ ` ld {emit_gpr 2}, 8({emit_gpr 11})\n`;
+ ` ld {emit_gpr 11}, 0({emit_gpr 11})\n`;
+ ` mtctr {emit_gpr 11}\n`;
+ record_frame i.live;
+ ` bctrl\n`;
+ ` ld {emit_gpr 2},40({emit_gpr 1})\n`
+ | Lop(Itailcall_ind) ->
+ ` ld {emit_gpr 2}, 8({emit_reg i.arg.(0)})\n`;
+ ` ld {emit_reg i.arg.(0)}, 0({emit_reg i.arg.(0)})\n`;
+ ` mtctr {emit_reg i.arg.(0)}\n`;
+ if has_stack_frame() then
+ ` ld {emit_gpr 1}, 0({emit_gpr 1})\n`;
+ if !contains_calls then begin
+ ` ld {emit_gpr 11}, 16({emit_gpr 1})\n`;
+ ` mtlr {emit_gpr 11}\n`
+ end;
+ ` bctr\n`
+ | Lop(Itailcall_imm s) ->
+ if s = !function_name then
+ ` b {emit_label !tailrec_entry_point}\n`
+ else begin
+ if has_stack_frame() then
+ ` ld {emit_gpr 1}, 0({emit_gpr 1})\n`;
+ if !contains_calls then begin
+ ` ld {emit_gpr 11}, 16({emit_gpr 1})\n`;
+ ` mtlr {emit_gpr 11}\n`
+ end;
+ ` ld {emit_gpr 11}, {emit_tocref (TocSymOfs (s,0))}\n`;
+ ` ld {emit_gpr 2}, 8({emit_gpr 11})\n`;
+ ` ld {emit_gpr 11}, 0({emit_gpr 11})\n`;
+ ` mtctr {emit_gpr 11}\n`;
+ ` bctr\n`
+ end
+ | Lop(Iextcall(s, alloc)) ->
+ if alloc then begin
+ ` ld {emit_gpr 11}, {emit_tocref (TocSymOfs (s,0))}\n`;
+ ` ld {emit_gpr 12}, {emit_tocref (TocSymOfs ("caml_c_call",0))}\n`;
+ end else
+ ` ld {emit_gpr 12}, {emit_tocref (TocSymOfs (s,0))}\n`;
+ ` std {emit_gpr 2}, 40({emit_gpr 1})\n`;
+ ` ld {emit_gpr 2}, 8({emit_gpr 12})\n`;
+ ` ld {emit_gpr 12}, 0({emit_gpr 12})\n`;
+ ` mtctr {emit_gpr 12}\n`;
+ if alloc then record_frame i.live;
+ ` bctrl\n`;
+ ` ld {emit_gpr 2}, 40({emit_gpr 1})\n`
+ | Lop(Istackoffset n) ->
+ if n > !stack_args_size then
+ stack_args_size := n
+ | Lop(Iload(chunk, addr)) ->
+ let loadinstr =
+ match chunk with
+ Byte_unsigned -> "lbz"
+ | Byte_signed -> "lbz"
+ | Sixteen_unsigned -> "lhz"
+ | Sixteen_signed -> "lha"
+ | Thirtytwo_unsigned -> "lwz"
+ | Thirtytwo_signed -> "lwa"
+ | Word -> "ld"
+ | Single -> "lfs"
+ | Double | Double_u -> "lfd" in
+ emit_load_store loadinstr addr i.arg 0 i.res.(0);
+ if chunk = Byte_signed then
+ ` extsb {emit_reg i.res.(0)}, {emit_reg i.res.(0)}\n`
+ | Lop(Istore(chunk, addr)) ->
+ let storeinstr =
+ match chunk with
+ Byte_unsigned | Byte_signed -> "stb"
+ | Sixteen_unsigned | Sixteen_signed -> "sth"
+ | Thirtytwo_unsigned | Thirtytwo_signed -> "stw"
+ | Word -> "std"
+ | Single -> "stfs"
+ | Double | Double_u -> "stfd" in
+ emit_load_store storeinstr addr i.arg 1 i.arg.(0)
+ | Lop(Ialloc n) ->
+ if !call_gc_label = 0 then call_gc_label := new_label();
+ ` addi {emit_gpr 31}, {emit_gpr 31}, {emit_int(-n)}\n`;
+ ` cmpld {emit_gpr 31}, {emit_gpr 30}\n`;
+ ` addi {emit_reg i.res.(0)}, {emit_gpr 31}, 8\n`;
+ record_frame i.live;
+ ` bltl {emit_label !call_gc_label}\n` (* Must be 4 insns to restart *)
+ | Lop(Ispecific(Ialloc_far n)) ->
+ if !call_gc_label = 0 then call_gc_label := new_label();
+ let lbl = new_label() in
+ ` addi {emit_gpr 31}, {emit_gpr 31}, {emit_int(-n)}\n`;
+ ` cmpld {emit_gpr 31}, {emit_gpr 30}\n`;
+ ` bge {emit_label lbl}\n`;
+ record_frame i.live;
+ ` bl {emit_label !call_gc_label}\n`; (* Must be 4 insns to restart *)
+ `{emit_label lbl}: addi {emit_reg i.res.(0)}, {emit_gpr 31}, {emit_int size_addr}\n`
+ | Lop(Iintop Isub) -> (* subfc has swapped arguments *)
+ ` subfc {emit_reg i.res.(0)}, {emit_reg i.arg.(1)}, {emit_reg i.arg.(0)}\n`
+ | Lop(Iintop Imod) ->
+ ` divd {emit_gpr 0}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+ ` mulld {emit_gpr 0}, {emit_gpr 0}, {emit_reg i.arg.(1)}\n`;
+ ` subfc {emit_reg i.res.(0)}, {emit_gpr 0}, {emit_reg i.arg.(0)}\n`
+ | Lop(Iintop(Icomp cmp)) ->
+ begin match cmp with
+ Isigned c ->
+ ` cmpd {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+ emit_set_comp c i.res.(0)
+ | Iunsigned c ->
+ ` cmpld {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+ emit_set_comp c i.res.(0)
+ end
+ | Lop(Iintop Icheckbound) ->
+ ` tdlle {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`
+ | Lop(Iintop op) ->
+ let instr = name_for_intop op in
+ ` {emit_string instr} {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`
+ | Lop(Iintop_imm(Isub, n)) ->
+ ` addi {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_int(-n)}\n`
+ | Lop(Iintop_imm(Idiv, n)) -> (* n is guaranteed to be a power of 2 *)
+ let l = Misc.log2 n in
+ ` sradi {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_int l}\n`;
+ ` addze {emit_reg i.res.(0)}, {emit_reg i.res.(0)}\n`
+ | Lop(Iintop_imm(Imod, n)) -> (* n is guaranteed to be a power of 2 *)
+ let l = Misc.log2 n in
+ ` sradi {emit_gpr 0}, {emit_reg i.arg.(0)}, {emit_int l}\n`;
+ ` addze {emit_gpr 0}, {emit_gpr 0}\n`;
+ ` sldi {emit_gpr 0}, {emit_gpr 0}, {emit_int l}\n`;
+ ` subfc {emit_reg i.res.(0)}, {emit_gpr 0}, {emit_reg i.arg.(0)}\n`
+ | Lop(Iintop_imm(Icomp cmp, n)) ->
+ begin match cmp with
+ Isigned c ->
+ ` cmpdi {emit_reg i.arg.(0)}, {emit_int n}\n`;
+ emit_set_comp c i.res.(0)
+ | Iunsigned c ->
+ ` cmpldi {emit_reg i.arg.(0)}, {emit_int n}\n`;
+ emit_set_comp c i.res.(0)
+ end
+ | Lop(Iintop_imm(Icheckbound, n)) ->
+ ` tdllei {emit_reg i.arg.(0)}, {emit_int n}\n`
+ | Lop(Iintop_imm(op, n)) ->
+ let instr = name_for_intop_imm op in
+ ` {emit_string instr} {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_int n}\n`
+ | Lop(Inegf | Iabsf as op) ->
+ let instr = name_for_floatop1 op in
+ ` {emit_string instr} {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}\n`
+ | Lop(Iaddf | Isubf | Imulf | Idivf as op) ->
+ let instr = name_for_floatop2 op in
+ ` {emit_string instr} {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`
+ | Lop(Ifloatofint) ->
+ let ofs = if has_stack_frame() then 16 else 8 * (2 + num_stack_slots.(0) + num_stack_slots.(1)) in
+ ` std {emit_reg i.arg.(0)}, -{emit_int ofs}({emit_gpr 1})\n`;
+ ` lfd {emit_reg i.res.(0)}, -{emit_int ofs}({emit_gpr 1})\n`;
+ ` fcfid {emit_reg i.res.(0)}, {emit_reg i.res.(0)}\n`
+ | Lop(Iintoffloat) ->
+ let ofs = if has_stack_frame() then 16 else 8 * (2 + num_stack_slots.(0) + num_stack_slots.(1)) in
+ ` fctidz {emit_fpr 0}, {emit_reg i.arg.(0)}\n`;
+ ` stfd {emit_fpr 0}, -{emit_int ofs}({emit_gpr 1})\n`;
+ ` ld {emit_reg i.res.(0)}, -{emit_int ofs}({emit_gpr 1})\n`
+ | Lop(Ispecific sop) ->
+ let instr = name_for_specific sop in
+ ` {emit_string instr} {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}, {emit_reg i.arg.(2)}\n`
+ | Lreloadretaddr ->
+ if has_stack_frame() then begin
+ ` ld {emit_gpr 11}, {emit_label !stack_size_lbl}+16({emit_gpr 1})\n`;
+ ` mtlr {emit_gpr 11}\n`
+ end
+ | Lreturn ->
+ if has_stack_frame() then
+ ` ld {emit_gpr 1}, 0({emit_gpr 1})\n`;
+ ` blr\n`
+ | Llabel lbl ->
+ `{emit_label lbl}:\n`
+ | Lbranch lbl ->
+ ` b {emit_label lbl}\n`
+ | Lcondbranch(tst, lbl) ->
+ begin match tst with
+ Itruetest ->
+ ` cmpdi {emit_reg i.arg.(0)}, 0\n`;
+ emit_delay dslot;
+ ` bne {emit_label lbl}\n`
+ | Ifalsetest ->
+ ` cmpdi {emit_reg i.arg.(0)}, 0\n`;
+ emit_delay dslot;
+ ` beq {emit_label lbl}\n`
+ | Iinttest cmp ->
+ let (comp, branch) = name_for_int_comparison cmp in
+ ` {emit_string comp} {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+ emit_delay dslot;
+ ` {emit_string branch} {emit_label lbl}\n`
+ | Iinttest_imm(cmp, n) ->
+ let (comp, branch) = name_for_int_comparison cmp in
+ ` {emit_string comp}i {emit_reg i.arg.(0)}, {emit_int n}\n`;
+ emit_delay dslot;
+ ` {emit_string branch} {emit_label lbl}\n`
+ | Ifloattest(cmp, neg) ->
+ ` fcmpu {emit_ccr 0}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+ (* bit 0 = lt, bit 1 = gt, bit 2 = eq *)
+ let (bitnum, negtst) =
+ match cmp with
+ Ceq -> (2, neg)
+ | Cne -> (2, not neg)
+ | Cle -> ` cror 3, 0, 2\n`; (* lt or eq *)
+ (3, neg)
+ | Cgt -> (1, neg)
+ | Cge -> ` cror 3, 1, 2\n`; (* gt or eq *)
+ (3, neg)
+ | Clt -> (0, neg) in
+ emit_delay dslot;
+ if negtst
+ then ` bf {emit_int bitnum}, {emit_label lbl}\n`
+ else ` bt {emit_int bitnum}, {emit_label lbl}\n`
+ | Ioddtest ->
+ ` andi. {emit_gpr 0}, {emit_reg i.arg.(0)}, 1\n`;
+ emit_delay dslot;
+ ` bne {emit_label lbl}\n`
+ | Ieventest ->
+ ` andi. {emit_gpr 0}, {emit_reg i.arg.(0)}, 1\n`;
+ emit_delay dslot;
+ ` beq {emit_label lbl}\n`
+ end
+ | Lcondbranch3(lbl0, lbl1, lbl2) ->
+ ` cmpdi {emit_reg i.arg.(0)}, 1\n`;
+ emit_delay dslot;
+ begin match lbl0 with
+ None -> ()
+ | Some lbl -> ` blt {emit_label lbl}\n`
+ end;
+ begin match lbl1 with
+ None -> ()
+ | Some lbl -> ` beq {emit_label lbl}\n`
+ end;
+ begin match lbl2 with
+ None -> ()
+ | Some lbl -> ` bgt {emit_label lbl}\n`
+ end
+ | Lswitch jumptbl ->
+ if !lbl_jumptbl = 0 then lbl_jumptbl := new_label();
+ ` ld {emit_gpr 11}, {emit_tocref (TocLabel !lbl_jumptbl)}\n`;
+ ` addi {emit_gpr 0}, {emit_reg i.arg.(0)}, {emit_int !num_jumptbl_entries}\n`;
+ ` sldi {emit_gpr 0}, {emit_gpr 0}, 2\n`;
+ ` lwax {emit_gpr 0}, {emit_gpr 11}, {emit_gpr 0}\n`;
+ ` add {emit_gpr 0}, {emit_gpr 11}, {emit_gpr 0}\n`;
+ ` mtctr {emit_gpr 0}\n`;
+ ` bctr\n`;
+ for i = 0 to Array.length jumptbl - 1 do
+ jumptbl_entries := jumptbl.(i) :: !jumptbl_entries;
+ incr num_jumptbl_entries
+ done
+ | Lsetuptrap lbl ->
+ ` bl {emit_label lbl}\n`;
+ | Lpushtrap ->
+ stack_traps_size := !stack_traps_size + 32;
+ ` addi {emit_gpr 11}, {emit_gpr 1}, {emit_label !stack_size_lbl}-{emit_int !stack_traps_size}\n`;
+ ` mflr {emit_gpr 0}\n`;
+ ` std {emit_gpr 29}, 0({emit_gpr 11})\n`;
+ ` std {emit_gpr 0}, 8({emit_gpr 11})\n`;
+ ` std {emit_gpr 1}, 16({emit_gpr 11})\n`;
+ ` std {emit_gpr 2}, 24({emit_gpr 11})\n`;
+ ` mr {emit_gpr 29}, {emit_gpr 11}\n`
+ | Lpoptrap ->
+ ` ld {emit_gpr 29}, 0({emit_gpr 29})\n`
+ | Lraise ->
+ ` ld {emit_gpr 0}, 8({emit_gpr 29})\n`;
+ ` ld {emit_gpr 1}, 16({emit_gpr 29})\n`;
+ ` ld {emit_gpr 2}, 24({emit_gpr 29})\n`;
+ ` mtlr {emit_gpr 0}\n`;
+ ` ld {emit_gpr 29}, 0({emit_gpr 29})\n`;
+ ` blr\n`
+
+and emit_delay = function
+ None -> ()
+ | Some i -> emit_instr i None
+
+(* Checks if a pseudo-instruction expands to instructions
+ that do not branch and do not affect CR0 nor R12. *)
+
+let is_simple_instr i =
+ match i.desc with
+ Lop op ->
+ begin match op with
+ Icall_imm _ | Icall_ind | Itailcall_imm _ | Itailcall_ind |
+ Iextcall(_, _) -> false
+ | Ialloc(_) -> false
+ | Iintop(Icomp _) -> false
+ | Iintop_imm(Iand, _) -> false
+ | Iintop_imm(Icomp _, _) -> false
+ | _ -> true
+ end
+ | Lreloadretaddr -> true
+ | _ -> false
+
+let no_interference res arg =
+ try
+ for i = 0 to Array.length arg - 1 do
+ for j = 0 to Array.length res - 1 do
+ if arg.(i).loc = res.(j).loc then raise Exit
+ done
+ done;
+ true
+ with Exit ->
+ false
+
+(* Emit a sequence of instructions, trying to fill delay slots for branches *)
+
+let rec emit_all i =
+ match i with
+ {desc = Lend} -> ()
+ | {next = {desc = (Lcondbranch(_, _) | Lcondbranch3(_, _, _))}}
+ when is_simple_instr i && no_interference i.res i.next.arg ->
+ emit_instr i.next (Some i);
+ emit_all i.next.next
+ | _ ->
+ emit_instr i None;
+ emit_all i.next
+
+(* Emission of a function declaration *)
+
+let fundecl fundecl =
+ function_name := fundecl.fun_name;
+ defined_functions := StringSet.add fundecl.fun_name !defined_functions;
+ tailrec_entry_point := new_label();
+ if has_stack_frame() then
+ stack_size_lbl := new_label();
+ stack_slot_lbl := new_label();
+ stack_args_size := 0;
+ stack_traps_size := 0;
+ call_gc_label := 0;
+ ` .globl {emit_symbol fundecl.fun_name}\n`;
+ begin match Config.system with
+ | "elf" | "bsd" ->
+ ` .section \".opd\",\"aw\"\n`;
+ ` .align 3\n`;
+ ` .type {emit_symbol fundecl.fun_name}, @function\n`;
+ `{emit_symbol fundecl.fun_name}:\n`;
+ ` .quad .L.{emit_symbol fundecl.fun_name},.TOC.@tocbase\n`;
+ ` .previous\n`;
+ ` .align 2\n`;
+ emit_string code_space;
+ `.L.{emit_symbol fundecl.fun_name}:\n`
+ | _ ->
+ ` .align 2\n`;
+ emit_string code_space;
+ `{emit_symbol fundecl.fun_name}:\n`
+ end;
+ if !contains_calls then begin
+ ` mflr {emit_gpr 0}\n`;
+ ` std {emit_gpr 0}, 16({emit_gpr 1})\n`
+ end;
+ if has_stack_frame() then
+ ` stdu {emit_gpr 1}, -{emit_label !stack_size_lbl}({emit_gpr 1})\n`;
+ `{emit_label !tailrec_entry_point}:\n`;
+ branch_normalization fundecl.fun_body;
+ emit_all fundecl.fun_body;
+ ` .size .L.{emit_symbol fundecl.fun_name}, . - .L.{emit_symbol fundecl.fun_name}\n`;
+ if has_stack_frame() then begin
+ ` .set {emit_label !stack_size_lbl},{emit_int (frame_size_sans_args() + !stack_args_size + !stack_traps_size)} # stack size including traps\n`;
+ ` .set {emit_label !stack_slot_lbl},{emit_int (48 + !stack_args_size)} # stack slot offset\n`
+ end else (* leave 8 bytes for float <-> conversions *)
+ ` .set {emit_label !stack_slot_lbl},{emit_int (40-frame_size_sans_args())} # stack slot offset (negative)\n`;
+
+ (* Emit the glue code to call the GC *)
+ if !call_gc_label > 0 then begin
+ `{emit_label !call_gc_label}:\n`;
+ ` ld {emit_gpr 12}, {emit_tocref (TocSymOfs ("caml_call_gc",0))}\n`;
+ ` ld {emit_gpr 12}, 0({emit_gpr 12})\n`;
+ ` mtctr {emit_gpr 12}\n`;
+ ` bctr\n`;
+ end
+
+(* Emission of data *)
+
+let declare_global_data s =
+ ` .globl {emit_symbol s}\n`;
+ if Config.system = "elf" || Config.system = "bsd" then
+ ` .type {emit_symbol s}, @object\n`
+
+let emit_item = function
+ Cglobal_symbol s ->
+ declare_global_data s
+ | Cdefine_symbol s ->
+ `{emit_symbol s}:\n`;
+ | Cdefine_label lbl ->
+ `{emit_label (lbl + 100000)}:\n`
+ | Cint8 n ->
+ ` .byte {emit_int n}\n`
+ | Cint16 n ->
+ ` .short {emit_int n}\n`
+ | Cint32 n ->
+ ` .long {emit_nativeint n}\n`
+ | Cint n ->
+ ` .quad {emit_nativeint n}\n`
+ | Csingle f ->
+ ` .float 0d{emit_string f}\n`
+ | Cdouble f ->
+ ` .double 0d{emit_string f}\n`
+ | Csymbol_address s ->
+ ` .quad {emit_symbol s}\n`
+ | Clabel_address lbl ->
+ ` .quad {emit_label (lbl + 100000)}\n`
+ | Cstring s ->
+ emit_bytes_directive " .byte " s
+ | Cskip n ->
+ if n > 0 then ` .space {emit_int n}\n`
+ | Calign n ->
+ ` .align {emit_int (Misc.log2 n)}\n`
+
+let data l =
+ emit_string data_space;
+ List.iter emit_item l
+
+(* Beginning / end of an assembly file *)
+
+let begin_assembly() =
+ defined_functions := StringSet.empty;
+ external_functions := StringSet.empty;
+ tocref_entries := [];
+ num_jumptbl_entries := 0;
+ jumptbl_entries := [];
+ lbl_jumptbl := 0;
+ (* Emit the beginning of the segments *)
+ let lbl_begin = Compilenv.make_symbol (Some "data_begin") in
+ emit_string data_space;
+ declare_global_data lbl_begin;
+ `{emit_symbol lbl_begin}:\n`;
+ let lbl_begin = Compilenv.make_symbol (Some "code_begin") in
+ emit_string code_space;
+ declare_global_data lbl_begin;
+ `{emit_symbol lbl_begin}:\n`
+
+let end_assembly() =
+ (* Emit the jump table *)
+ if !num_jumptbl_entries > 0 then begin
+ emit_string code_space;
+ `{emit_label !lbl_jumptbl}:\n`;
+ List.iter
+ (fun lbl -> ` .long {emit_label lbl} - {emit_label !lbl_jumptbl}\n`)
+ (List.rev !jumptbl_entries);
+ jumptbl_entries := []
+ end;
+ if !tocref_entries <> [] then begin
+ emit_string toc_space;
+ List.iter
+ (fun (lbl, entry) ->
+ `{emit_label lbl}:\n`;
+ match entry with
+ TocFloat f ->
+ ` .double {emit_tocentry entry}\n`
+ | _ ->
+ ` .tc {emit_label lbl}[TC],{emit_tocentry entry}\n`
+ )
+ !tocref_entries;
+ tocref_entries := []
+ end;
+ if pic_externals then
+ (* Emit the pointers to external functions *)
+ StringSet.iter emit_external !external_functions;
+ (* Emit the end of the segments *)
+ emit_string code_space;
+ let lbl_end = Compilenv.make_symbol (Some "code_end") in
+ declare_global_data lbl_end;
+ `{emit_symbol lbl_end}:\n`;
+ ` .long 0\n`;
+ emit_string data_space;
+ let lbl_end = Compilenv.make_symbol (Some "data_end") in
+ declare_global_data lbl_end;
+ `{emit_symbol lbl_end}:\n`;
+ ` .quad 0\n`;
+ (* Emit the frame descriptors *)
+ emit_string rodata_space;
+ let lbl = Compilenv.make_symbol (Some "frametable") in
+ declare_global_data lbl;
+ `{emit_symbol lbl}:\n`;
+ ` .quad {emit_int (List.length !frame_descriptors)}\n`;
+ List.iter emit_frame !frame_descriptors;
+ frame_descriptors := []
diff --git a/asmcomp/power64/proc.ml b/asmcomp/power64/proc.ml
new file mode 100644
index 0000000..372303d
--- /dev/null
+++ b/asmcomp/power64/proc.ml
@@ -0,0 +1,240 @@
+(***********************************************************************)
+(* *)
+(* Objective Caml *)
+(* *)
+(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
+(* *)
+(* Copyright 1996 Institut National de Recherche en Informatique et *)
+(* en Automatique. All rights reserved. This file is distributed *)
+(* under the terms of the Q Public License version 1.0. *)
+(* *)
+(***********************************************************************)
+
+(* $Id: proc.ml 9547 2010-01-22 12:48:24Z doligez $ *)
+
+(* Description of the Power PC *)
+
+open Misc
+open Cmm
+open Reg
+open Arch
+open Mach
+
+(* Instruction selection *)
+
+let word_addressed = false
+
+(* Registers available for register allocation *)
+
+(* Integer register map:
+ 0 temporary, null register for some operations
+ 1 stack pointer
+ 2 pointer to table of contents
+ 3 - 10 function arguments and results
+ 11 - 12 temporaries
+ 13 pointer to small data area
+ 14 - 28 general purpose, preserved by C
+ 29 trap pointer
+ 30 allocation limit
+ 31 allocation pointer
+ Floating-point register map:
+ 0 temporary
+ 1 - 13 function arguments and results
+ 14 - 31 general purpose, preserved by C
+*)
+
+let int_reg_name =
+ if Config.system = "rhapsody" then
+ [| "r3"; "r4"; "r5"; "r6"; "r7"; "r8"; "r9"; "r10";
+ "r14"; "r15"; "r16"; "r17"; "r18"; "r19"; "r20"; "r21";
+ "r22"; "r23"; "r24"; "r25"; "r26"; "r27"; "r28" |]
+ else
+ [| "3"; "4"; "5"; "6"; "7"; "8"; "9"; "10";
+ "14"; "15"; "16"; "17"; "18"; "19"; "20"; "21";
+ "22"; "23"; "24"; "25"; "26"; "27"; "28" |]
+
+let float_reg_name =
+ if Config.system = "rhapsody" then
+ [| "f1"; "f2"; "f3"; "f4"; "f5"; "f6"; "f7"; "f8";
+ "f9"; "f10"; "f11"; "f12"; "f13"; "f14"; "f15"; "f16";
+ "f17"; "f18"; "f19"; "f20"; "f21"; "f22"; "f23"; "f24";
+ "f25"; "f26"; "f27"; "f28"; "f29"; "f30"; "f31" |]
+ else
+ [| "1"; "2"; "3"; "4"; "5"; "6"; "7"; "8";
+ "9"; "10"; "11"; "12"; "13"; "14"; "15"; "16";
+ "17"; "18"; "19"; "20"; "21"; "22"; "23"; "24";
+ "25"; "26"; "27"; "28"; "29"; "30"; "31" |]
+
+let num_register_classes = 2
+
+let register_class r =
+ match r.typ with
+ Int -> 0
+ | Addr -> 0
+ | Float -> 1
+
+let num_available_registers = [| 23; 31 |]
+
+let first_available_register = [| 0; 100 |]
+
+let register_name r =
+ if r < 100 then int_reg_name.(r) else float_reg_name.(r - 100)
+
+let rotate_registers = true
+
+(* Representation of hard registers by pseudo-registers *)
+
+let hard_int_reg =
+ let v = Array.create 23 Reg.dummy in
+ for i = 0 to 22 do v.(i) <- Reg.at_location Int (Reg i) done; v
+
+let hard_float_reg =
+ let v = Array.create 31 Reg.dummy in
+ for i = 0 to 30 do v.(i) <- Reg.at_location Float (Reg(100 + i)) done; v
+
+let all_phys_regs =
+ Array.append hard_int_reg hard_float_reg
+
+let phys_reg n =
+ if n < 100 then hard_int_reg.(n) else hard_float_reg.(n - 100)
+
+let stack_slot slot ty =
+ Reg.at_location ty (Stack slot)
+
+(* Calling conventions *)
+
+let calling_conventions
+ first_int last_int first_float last_float make_stack stack_ofs arg =
+ let loc = Array.create (Array.length arg) Reg.dummy in
+ let int = ref first_int in
+ let float = ref first_float in
+ let ofs = ref stack_ofs in
+ for i = 0 to Array.length arg - 1 do
+ match arg.(i).typ with
+ Int | Addr as ty ->
+ if !int <= last_int then begin
+ loc.(i) <- phys_reg !int;
+ incr int
+ end else begin
+ loc.(i) <- stack_slot (make_stack !ofs) ty;
+ end;
+ ofs := !ofs + size_int
+ | Float ->
+ if !float <= last_float then begin
+ loc.(i) <- phys_reg !float;
+ incr float
+ end else begin
+ loc.(i) <- stack_slot (make_stack !ofs) Float;
+ end;
+ ofs := !ofs + size_float
+ done;
+ (loc, Misc.align !ofs 16)
+ (* Keep stack 16-aligned. *)
+
+let incoming ofs = Incoming ofs
+let outgoing ofs = Outgoing ofs
+let not_supported ofs = fatal_error "Proc.loc_results: cannot call"
+
+let loc_arguments arg =
+ calling_conventions 0 7 100 112 outgoing 48 arg
+let loc_parameters arg =
+ let (loc, ofs) = calling_conventions 0 7 100 112 incoming 0 arg in loc
+let loc_results res =
+ let (loc, ofs) = calling_conventions 0 7 100 112 not_supported 0 res in loc
+
+(* C calling conventions under PowerOpen:
+ use GPR 3-10 and FPR 1-13 just like ML calling
+ conventions, but always reserve stack space for all arguments.
+ Also, using a float register automatically reserves two int registers
+ (in 32-bit mode) or one int register (in 64-bit mode).
+ (If we were to call a non-prototyped C function, each float argument
+ would have to go both in a float reg and in the matching pair
+ of integer regs.)
+
+ C calling conventions under SVR4:
+ use GPR 3-10 and FPR 1-8 just like ML calling conventions.
+ Using a float register does not affect the int registers.
+ Always reserve 8 bytes at bottom of stack, plus whatever is needed
+ to hold the overflow arguments. *)
+
+let poweropen_external_conventions first_int last_int
+ first_float last_float arg =
+ let loc = Array.create (Array.length arg) Reg.dummy in
+ let int = ref first_int in
+ let float = ref first_float in
+ let ofs = ref (14 * size_addr) in
+ for i = 0 to Array.length arg - 1 do
+ match arg.(i).typ with
+ Int | Addr as ty ->
+ if !int <= last_int then begin
+ loc.(i) <- phys_reg !int;
+ incr int
+ end else begin
+ loc.(i) <- stack_slot (Outgoing !ofs) ty;
+ ofs := !ofs + size_int
+ end
+ | Float ->
+ if !float <= last_float then begin
+ loc.(i) <- phys_reg !float;
+ incr float
+ end else begin
+ loc.(i) <- stack_slot (Outgoing !ofs) Float;
+ ofs := !ofs + size_float
+ end;
+ int := !int + 1
+ done;
+ (loc, Misc.align !ofs 16) (* Keep stack 16-aligned *)
+
+let loc_external_arguments =
+ match Config.system with
+ | "rhapsody" -> poweropen_external_conventions 0 7 100 112
+ | "elf" | "bsd" -> calling_conventions 0 7 100 107 outgoing 48
+ | _ -> assert false
+
+let extcall_use_push = false
+
+(* Results are in GPR 3 and FPR 1 *)
+
+let loc_external_results res =
+ let (loc, ofs) = calling_conventions 0 0 100 100 not_supported 0 res in loc
+
+(* Exceptions are in GPR 3 *)
+
+let loc_exn_bucket = phys_reg 0
+
+(* Registers destroyed by operations *)
+
+let destroyed_at_c_call =
+ Array.of_list(List.map phys_reg
+ [0; 1; 2; 3; 4; 5; 6; 7;
+ 100; 101; 102; 103; 104; 105; 106; 107; 108; 109; 110; 111; 112])
+
+let destroyed_at_oper = function
+ Iop(Icall_ind | Icall_imm _ | Iextcall(_, true)) -> all_phys_regs
+ | Iop(Iextcall(_, false)) -> destroyed_at_c_call
+ | _ -> [||]
+
+let destroyed_at_raise = all_phys_regs
+
+(* Maximal register pressure *)
+
+let safe_register_pressure = function
+ Iextcall(_, _) -> 15
+ | _ -> 23
+
+let max_register_pressure = function
+ Iextcall(_, _) -> [| 15; 18 |]
+ | _ -> [| 23; 30 |]
+
+(* Layout of the stack *)
+
+let num_stack_slots = [| 0; 0 |]
+let contains_calls = ref false
+
+(* Calling the assembler *)
+
+let assemble_file infile outfile =
+ Ccomp.command (Config.asm ^ " -o " ^
+ Filename.quote outfile ^ " " ^ Filename.quote infile)
+
+let init () = ()
diff --git a/asmcomp/power64/reload.ml b/asmcomp/power64/reload.ml
new file mode 100644
index 0000000..abcac6c
--- /dev/null
+++ b/asmcomp/power64/reload.ml
@@ -0,0 +1,18 @@
+(***********************************************************************)
+(* *)
+(* Objective Caml *)
+(* *)
+(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
+(* *)
+(* Copyright 1996 Institut National de Recherche en Informatique et *)
+(* en Automatique. All rights reserved. This file is distributed *)
+(* under the terms of the Q Public License version 1.0. *)
+(* *)
+(***********************************************************************)
+
+(* $Id: reload.ml 2553 1999-11-17 18:59:06Z xleroy $ *)
+
+(* Reloading for the PowerPC *)
+
+let fundecl f =
+ (new Reloadgen.reload_generic)#fundecl f
diff --git a/asmcomp/power64/scheduling.ml b/asmcomp/power64/scheduling.ml
new file mode 100644
index 0000000..b7bba9b
--- /dev/null
+++ b/asmcomp/power64/scheduling.ml
@@ -0,0 +1,65 @@
+(***********************************************************************)
+(* *)
+(* Objective Caml *)
+(* *)
+(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
+(* *)
+(* Copyright 1996 Institut National de Recherche en Informatique et *)
+(* en Automatique. All rights reserved. This file is distributed *)
+(* under the terms of the Q Public License version 1.0. *)
+(* *)
+(***********************************************************************)
+
+(* $Id: scheduling.ml 9547 2010-01-22 12:48:24Z doligez $ *)
+
+(* Instruction scheduling for the Power PC *)
+
+open Arch
+open Mach
+
+class scheduler = object
+
+inherit Schedgen.scheduler_generic
+
+(* Latencies (in cycles). Based roughly on the "common model". *)
+
+method oper_latency = function
+ Ireload -> 2
+ | Iload(_, _) -> 2
+ | Iconst_float _ -> 2 (* turned into a load *)
+ | Iconst_symbol _ -> 1
+ | Iintop Imul -> 9
+ | Iintop_imm(Imul, _) -> 5
+ | Iintop(Idiv | Imod) -> 36
+ | Iaddf | Isubf -> 4
+ | Imulf -> 5
+ | Idivf -> 33
+ | Ispecific(Imultaddf | Imultsubf) -> 5
+ | _ -> 1
+
+method reload_retaddr_latency = 12
+ (* If we can have that many cycles between the reloadretaddr and the
+ return, we can expect that the blr branch will be completely folded. *)
+
+(* Issue cycles. Rough approximations. *)
+
+method oper_issue_cycles = function
+ Iconst_float _ | Iconst_symbol _ -> 2
+ | Iload(_, Ibased(_, _)) -> 2
+ | Istore(_, Ibased(_, _)) -> 2
+ | Ialloc _ -> 4
+ | Iintop(Imod) -> 40 (* assuming full stall *)
+ | Iintop(Icomp _) -> 4
+ | Iintop_imm(Idiv, _) -> 2
+ | Iintop_imm(Imod, _) -> 4
+ | Iintop_imm(Icomp _, _) -> 4
+ | Ifloatofint -> 9
+ | Iintoffloat -> 4
+ | _ -> 1
+
+method reload_retaddr_issue_cycles = 3
+ (* load then stalling mtlr *)
+
+end
+
+let fundecl f = (new scheduler)#schedule_fundecl f
diff --git a/asmcomp/power64/selection.ml b/asmcomp/power64/selection.ml
new file mode 100644
index 0000000..53b7828
--- /dev/null
+++ b/asmcomp/power64/selection.ml
@@ -0,0 +1,101 @@
+(***********************************************************************)
+(* *)
+(* Objective Caml *)
+(* *)
+(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
+(* *)
+(* Copyright 1997 Institut National de Recherche en Informatique et *)
+(* en Automatique. All rights reserved. This file is distributed *)
+(* under the terms of the Q Public License version 1.0. *)
+(* *)
+(***********************************************************************)
+
+(* $Id: selection.ml 10296 2010-04-22 12:51:06Z xleroy $ *)
+
+(* Instruction selection for the Power PC processor *)
+
+open Cmm
+open Arch
+open Mach
+
+(* Recognition of addressing modes *)
+
+type addressing_expr =
+ Asymbol of string
+ | Alinear of expression
+ | Aadd of expression * expression
+
+let rec select_addr = function
+ Cconst_symbol s ->
+ (Asymbol s, 0)
+ | Cop((Caddi | Cadda), [arg; Cconst_int m]) ->
+ let (a, n) = select_addr arg in (a, n + m)
+ | Cop((Caddi | Cadda), [Cconst_int m; arg]) ->
+ let (a, n) = select_addr arg in (a, n + m)
+ | Cop((Caddi | Cadda), [arg1; arg2]) ->
+ begin match (select_addr arg1, select_addr arg2) with
+ ((Alinear e1, n1), (Alinear e2, n2)) ->
+ (Aadd(e1, e2), n1 + n2)
+ | _ ->
+ (Aadd(arg1, arg2), 0)
+ end
+ | exp ->
+ (Alinear exp, 0)
+
+(* Instruction selection *)
+
+class selector = object (self)
+
+inherit Selectgen.selector_generic as super
+
+method is_immediate n = (n <= 32767) && (n >= -32768)
+
+method select_addressing chunk exp =
+ match select_addr exp with
+ (Asymbol s, d) ->
+ (Ibased(s, d), Ctuple [])
+ | (Alinear e, d) ->
+ (Iindexed d, e)
+ | (Aadd(e1, e2), d) ->
+ if d = 0
+ then (Iindexed2, Ctuple[e1; e2])
+ else (Iindexed d, Cop(Cadda, [e1; e2]))
+
+method! select_operation op args =
+ match (op, args) with
+ (* Prevent the recognition of (x / cst) and (x % cst) when cst is not
+ a power of 2, which do not correspond to an instruction. *)
+ (Cdivi, [arg; Cconst_int n]) when n = 1 lsl (Misc.log2 n) ->
+ (Iintop_imm(Idiv, n), [arg])
+ | (Cdivi, _) ->
+ (Iintop Idiv, args)
+ | (Cmodi, [arg; Cconst_int n]) when n = 1 lsl (Misc.log2 n) ->
+ (Iintop_imm(Imod, n), [arg])
+ | (Cmodi, _) ->
+ (Iintop Imod, args)
+ (* The and, or and xor instructions have a different range of immediate
+ operands than the other instructions *)
+ | (Cand, _) -> self#select_logical Iand args
+ | (Cor, _) -> self#select_logical Ior args
+ | (Cxor, _) -> self#select_logical Ixor args
+ (* Recognize mult-add and mult-sub instructions *)
+ | (Caddf, [Cop(Cmulf, [arg1; arg2]); arg3]) ->
+ (Ispecific Imultaddf, [arg1; arg2; arg3])
+ | (Caddf, [arg3; Cop(Cmulf, [arg1; arg2])]) ->
+ (Ispecific Imultaddf, [arg1; arg2; arg3])
+ | (Csubf, [Cop(Cmulf, [arg1; arg2]); arg3]) ->
+ (Ispecific Imultsubf, [arg1; arg2; arg3])
+ | _ ->
+ super#select_operation op args
+
+method select_logical op = function
+ [arg; Cconst_int n] when n >= 0 && n <= 0xFFFF ->
+ (Iintop_imm(op, n), [arg])
+ | [Cconst_int n; arg] when n >= 0 && n <= 0xFFFF ->
+ (Iintop_imm(op, n), [arg])
+ | args ->
+ (Iintop op, args)
+
+end
+
+let fundecl f = (new selector)#emit_fundecl f
diff --git a/asmrun/Makefile b/asmrun/Makefile
index 37b6182..788fee9 100644
--- a/asmrun/Makefile
+++ b/asmrun/Makefile
@@ -122,6 +122,12 @@ power.p.o: power-$(SYSTEM).o
power.pic.o: power-$(SYSTEM).pic.o
cp power-$(SYSTEM).pic.o power.pic.o
+power64.o: power64-$(SYSTEM).o
+ cp power64-$(SYSTEM).o power64.o
+
+power64.p.o: power64-$(SYSTEM).o
+ cp power64-$(SYSTEM).o power64.p.o
+
main.c: ../byterun/main.c
ln -s ../byterun/main.c main.c
misc.c: ../byterun/misc.c
diff --git a/asmrun/power64-elf.S b/asmrun/power64-elf.S
new file mode 100644
index 0000000..b2c24d6
--- /dev/null
+++ b/asmrun/power64-elf.S
@@ -0,0 +1,486 @@
+/*********************************************************************/
+/* */
+/* Objective Caml */
+/* */
+/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
+/* */
+/* Copyright 1996 Institut National de Recherche en Informatique et */
+/* en Automatique. All rights reserved. This file is distributed */
+/* under the terms of the GNU Library General Public License, with */
+/* the special exception on linking described in file ../LICENSE. */
+/* */
+/*********************************************************************/
+
+/* $Id: ocaml-3.11.0-ppc64.patch,v 1.1 2008/11/20 15:30:55 rjones Exp $ */
+
+#define Addrglobal(reg,glob) \
+ addis reg, 0, glob@ha; \
+ addi reg, reg, glob@l
+#define Loadglobal(reg,glob,tmp) \
+ addis tmp, 0, glob@ha; \
+ ld reg, glob@l(tmp)
+#define Storeglobal(reg,glob,tmp) \
+ addis tmp, 0, glob@ha; \
+ std reg, glob@l(tmp)
+
+ .section ".text"
+
+/* Invoke the garbage collector. */
+
+ .globl caml_call_gc
+ .type caml_call_gc, @function
+ .section ".opd","aw"
+ .align 3
+caml_call_gc:
+ .quad .L.caml_call_gc,.TOC.@tocbase
+ .previous
+ .align 2
+.L.caml_call_gc:
+ /* Set up stack frame */
+ mflr 0
+ std 0, 16(1)
+ /* Record return address into Caml code */
+ Storeglobal(0, caml_last_return_address, 11)
+ /* Record lowest stack address */
+ Storeglobal(1, caml_bottom_of_stack, 11)
+ /* 0x220 = 8*32 (int regs) + 8*32 (float regs) + 48 (stack frame) */
+ stdu 1, -0x230(1)
+ /* Record pointer to register array */
+ addi 0, 1, 8*32 + 48
+ Storeglobal(0, caml_gc_regs, 11)
+ /* Save current allocation pointer for debugging purposes */
+ Storeglobal(31, caml_young_ptr, 11)
+ /* Save exception pointer (if e.g. a sighandler raises) */
+ Storeglobal(29, caml_exception_pointer, 11)
+ /* Save all registers used by the code generator */
+ addi 11, 1, 8*32 + 48 - 8
+ stdu 3, 8(11)
+ stdu 4, 8(11)
+ stdu 5, 8(11)
+ stdu 6, 8(11)
+ stdu 7, 8(11)
+ stdu 8, 8(11)
+ stdu 9, 8(11)
+ stdu 10, 8(11)
+ stdu 14, 8(11)
+ stdu 15, 8(11)
+ stdu 16, 8(11)
+ stdu 17, 8(11)
+ stdu 18, 8(11)
+ stdu 19, 8(11)
+ stdu 20, 8(11)
+ stdu 21, 8(11)
+ stdu 22, 8(11)
+ stdu 23, 8(11)
+ stdu 24, 8(11)
+ stdu 25, 8(11)
+ stdu 26, 8(11)
+ stdu 27, 8(11)
+ stdu 28, 8(11)
+ addi 11, 1, 48 - 8
+ stfdu 1, 8(11)
+ stfdu 2, 8(11)
+ stfdu 3, 8(11)
+ stfdu 4, 8(11)
+ stfdu 5, 8(11)
+ stfdu 6, 8(11)
+ stfdu 7, 8(11)
+ stfdu 8, 8(11)
+ stfdu 9, 8(11)
+ stfdu 10, 8(11)
+ stfdu 11, 8(11)
+ stfdu 12, 8(11)
+ stfdu 13, 8(11)
+ stfdu 14, 8(11)
+ stfdu 15, 8(11)
+ stfdu 16, 8(11)
+ stfdu 17, 8(11)
+ stfdu 18, 8(11)
+ stfdu 19, 8(11)
+ stfdu 20, 8(11)
+ stfdu 21, 8(11)
+ stfdu 22, 8(11)
+ stfdu 23, 8(11)
+ stfdu 24, 8(11)
+ stfdu 25, 8(11)
+ stfdu 26, 8(11)
+ stfdu 27, 8(11)
+ stfdu 28, 8(11)
+ stfdu 29, 8(11)
+ stfdu 30, 8(11)
+ stfdu 31, 8(11)
+ /* Call the GC */
+ std 2,40(1)
+ Addrglobal(11, caml_garbage_collection)
+ ld 2,8(11)
+ ld 11,0(11)
+ mtlr 11
+ blrl
+ ld 2,40(1)
+ /* Reload new allocation pointer and allocation limit */
+ Loadglobal(31, caml_young_ptr, 11)
+ Loadglobal(30, caml_young_limit, 11)
+ /* Restore all regs used by the code generator */
+ addi 11, 1, 8*32 + 48 - 8
+ ldu 3, 8(11)
+ ldu 4, 8(11)
+ ldu 5, 8(11)
+ ldu 6, 8(11)
+ ldu 7, 8(11)
+ ldu 8, 8(11)
+ ldu 9, 8(11)
+ ldu 10, 8(11)
+ ldu 14, 8(11)
+ ldu 15, 8(11)
+ ldu 16, 8(11)
+ ldu 17, 8(11)
+ ldu 18, 8(11)
+ ldu 19, 8(11)
+ ldu 20, 8(11)
+ ldu 21, 8(11)
+ ldu 22, 8(11)
+ ldu 23, 8(11)
+ ldu 24, 8(11)
+ ldu 25, 8(11)
+ ldu 26, 8(11)
+ ldu 27, 8(11)
+ ldu 28, 8(11)
+ addi 11, 1, 48 - 8
+ lfdu 1, 8(11)
+ lfdu 2, 8(11)
+ lfdu 3, 8(11)
+ lfdu 4, 8(11)
+ lfdu 5, 8(11)
+ lfdu 6, 8(11)
+ lfdu 7, 8(11)
+ lfdu 8, 8(11)
+ lfdu 9, 8(11)
+ lfdu 10, 8(11)
+ lfdu 11, 8(11)
+ lfdu 12, 8(11)
+ lfdu 13, 8(11)
+ lfdu 14, 8(11)
+ lfdu 15, 8(11)
+ lfdu 16, 8(11)
+ lfdu 17, 8(11)
+ lfdu 18, 8(11)
+ lfdu 19, 8(11)
+ lfdu 20, 8(11)
+ lfdu 21, 8(11)
+ lfdu 22, 8(11)
+ lfdu 23, 8(11)
+ lfdu 24, 8(11)
+ lfdu 25, 8(11)
+ lfdu 26, 8(11)
+ lfdu 27, 8(11)
+ lfdu 28, 8(11)
+ lfdu 29, 8(11)
+ lfdu 30, 8(11)
+ lfdu 31, 8(11)
+ /* Return to caller, restarting the allocation */
+ Loadglobal(0, caml_last_return_address, 11)
+ addic 0, 0, -16 /* Restart the allocation (4 instructions) */
+ mtlr 0
+ /* Say we are back into Caml code */
+ li 12, 0
+ Storeglobal(12, caml_last_return_address, 11)
+ /* Deallocate stack frame */
+ ld 1, 0(1)
+ /* Return */
+ blr
+ .size .L.caml_call_gc,.-.L.caml_call_gc
+
+/* Call a C function from Caml */
+
+ .globl caml_c_call
+ .type caml_c_call, @function
+ .section ".opd","aw"
+ .align 3
+caml_c_call:
+ .quad .L.caml_c_call,.TOC.@tocbase
+ .previous
+ .align 2
+.L.caml_c_call:
+ .cfi_startproc
+ /* Save return address */
+ mflr 25
+ .cfi_register lr,25
+ /* Get ready to call C function (address in 11) */
+ ld 2, 8(11)
+ ld 11,0(11)
+ mtlr 11
+ /* Record lowest stack address and return address */
+ Storeglobal(1, caml_bottom_of_stack, 12)
+ Storeglobal(25, caml_last_return_address, 12)
+ /* Make the exception handler and alloc ptr available to the C code */
+ Storeglobal(31, caml_young_ptr, 11)
+ Storeglobal(29, caml_exception_pointer, 11)
+ /* Call the function (address in link register) */
+ blrl
+ /* Restore return address (in 25, preserved by the C function) */
+ mtlr 25
+ /* Reload allocation pointer and allocation limit*/
+ Loadglobal(31, caml_young_ptr, 11)
+ Loadglobal(30, caml_young_limit, 11)
+ /* Say we are back into Caml code */
+ li 12, 0
+ Storeglobal(12, caml_last_return_address, 11)
+ /* Return to caller */
+ blr
+ .cfi_endproc
+ .size .L.caml_c_call,.-.L.caml_c_call
+
+/* Raise an exception from C */
+
+ .globl caml_raise_exception
+ .type caml_raise_exception, @function
+ .section ".opd","aw"
+ .align 3
+caml_raise_exception:
+ .quad .L.caml_raise_exception,.TOC.@tocbase
+ .previous
+ .align 2
+.L.caml_raise_exception:
+ /* Reload Caml global registers */
+ Loadglobal(29, caml_exception_pointer, 11)
+ Loadglobal(31, caml_young_ptr, 11)
+ Loadglobal(30, caml_young_limit, 11)
+ /* Say we are back into Caml code */
+ li 0, 0
+ Storeglobal(0, caml_last_return_address, 11)
+ /* Pop trap frame */
+ ld 0, 8(29)
+ ld 1, 16(29)
+ mtlr 0
+ ld 2, 24(29)
+ ld 29, 0(29)
+ /* Branch to handler */
+ blr
+ .size .L.caml_raise_exception,.-.L.caml_raise_exception
+
+/* Start the Caml program */
+
+ .globl caml_start_program
+ .type caml_start_program, @function
+ .section ".opd","aw"
+ .align 3
+caml_start_program:
+ .quad .L.caml_start_program,.TOC.@tocbase
+ .previous
+ .align 2
+.L.caml_start_program:
+ Addrglobal(12, caml_program)
+
+/* Code shared between caml_start_program and caml_callback */
+.L102:
+ /* Allocate and link stack frame */
+ mflr 0
+ std 0, 16(1)
+ stdu 1, -0x190(1) /* 48 + 8*36(regs) + 32(callback) + 32(exc) */
+ /* Save return address */
+ /* Save all callee-save registers */
+ /* GPR 14 ... GPR 31 then FPR 14 ... FPR 31 starting at sp+16 */
+ addi 11, 1, 48-8
+ stdu 14, 8(11)
+ stdu 15, 8(11)
+ stdu 16, 8(11)
+ stdu 17, 8(11)
+ stdu 18, 8(11)
+ stdu 19, 8(11)
+ stdu 20, 8(11)
+ stdu 21, 8(11)
+ stdu 22, 8(11)
+ stdu 23, 8(11)
+ stdu 24, 8(11)
+ stdu 25, 8(11)
+ stdu 26, 8(11)
+ stdu 27, 8(11)
+ stdu 28, 8(11)
+ stdu 29, 8(11)
+ stdu 30, 8(11)
+ stdu 31, 8(11)
+ stfdu 14, 8(11)
+ stfdu 15, 8(11)
+ stfdu 16, 8(11)
+ stfdu 17, 8(11)
+ stfdu 18, 8(11)
+ stfdu 19, 8(11)
+ stfdu 20, 8(11)
+ stfdu 21, 8(11)
+ stfdu 22, 8(11)
+ stfdu 23, 8(11)
+ stfdu 24, 8(11)
+ stfdu 25, 8(11)
+ stfdu 26, 8(11)
+ stfdu 27, 8(11)
+ stfdu 28, 8(11)
+ stfdu 29, 8(11)
+ stfdu 30, 8(11)
+ stfdu 31, 8(11)
+ /* Set up a callback link */
+ Loadglobal(9, caml_bottom_of_stack, 11)
+ Loadglobal(10, caml_last_return_address, 11)
+ Loadglobal(11, caml_gc_regs, 11)
+ std 9, 0x150(1)
+ std 10, 0x158(1)
+ std 11, 0x160(1)
+ /* Build an exception handler to catch exceptions escaping out of Caml */
+ bl .L103
+ b .L104
+.L103:
+ mflr 0
+ addi 29, 1, 0x170 /* Alignment */
+ std 0, 8(29)
+ std 1, 16(29)
+ std 2, 24(29)
+ Loadglobal(11, caml_exception_pointer, 11)
+ std 11, 0(29)
+ /* Reload allocation pointers */
+ Loadglobal(31, caml_young_ptr, 11)
+ Loadglobal(30, caml_young_limit, 11)
+ /* Say we are back into Caml code */
+ li 0, 0
+ Storeglobal(0, caml_last_return_address, 11)
+ /* Call the Caml code */
+ std 2,40(1)
+ ld 2,8(12)
+ ld 12,0(12)
+ mtlr 12
+.L105:
+ blrl
+ ld 2,40(1)
+ /* Pop the trap frame, restoring caml_exception_pointer */
+ ld 9, 0x170(1)
+ Storeglobal(9, caml_exception_pointer, 11)
+ /* Pop the callback link, restoring the global variables */
+.L106:
+ ld 9, 0x150(1)
+ ld 10, 0x158(1)
+ ld 11, 0x160(1)
+ Storeglobal(9, caml_bottom_of_stack, 12)
+ Storeglobal(10, caml_last_return_address, 12)
+ Storeglobal(11, caml_gc_regs, 12)
+ /* Update allocation pointer */
+ Storeglobal(31, caml_young_ptr, 11)
+ /* Restore callee-save registers */
+ addi 11, 1, 48-8
+ ldu 14, 8(11)
+ ldu 15, 8(11)
+ ldu 16, 8(11)
+ ldu 17, 8(11)
+ ldu 18, 8(11)
+ ldu 19, 8(11)
+ ldu 20, 8(11)
+ ldu 21, 8(11)
+ ldu 22, 8(11)
+ ldu 23, 8(11)
+ ldu 24, 8(11)
+ ldu 25, 8(11)
+ ldu 26, 8(11)
+ ldu 27, 8(11)
+ ldu 28, 8(11)
+ ldu 29, 8(11)
+ ldu 30, 8(11)
+ ldu 31, 8(11)
+ lfdu 14, 8(11)
+ lfdu 15, 8(11)
+ lfdu 16, 8(11)
+ lfdu 17, 8(11)
+ lfdu 18, 8(11)
+ lfdu 19, 8(11)
+ lfdu 20, 8(11)
+ lfdu 21, 8(11)
+ lfdu 22, 8(11)
+ lfdu 23, 8(11)
+ lfdu 24, 8(11)
+ lfdu 25, 8(11)
+ lfdu 26, 8(11)
+ lfdu 27, 8(11)
+ lfdu 28, 8(11)
+ lfdu 29, 8(11)
+ lfdu 30, 8(11)
+ lfdu 31, 8(11)
+ /* Return */
+ ld 1,0(1)
+ /* Reload return address */
+ ld 0, 16(1)
+ mtlr 0
+ blr
+
+ /* The trap handler: */
+.L104:
+ /* Update caml_exception_pointer */
+ Storeglobal(29, caml_exception_pointer, 11)
+ /* Encode exception bucket as an exception result and return it */
+ ori 3, 3, 2
+ b .L106
+ .size .L.caml_start_program,.-.L.caml_start_program
+
+/* Callback from C to Caml */
+
+ .globl caml_callback_exn
+ .type caml_callback_exn, @function
+ .section ".opd","aw"
+ .align 3
+caml_callback_exn:
+ .quad .L.caml_callback_exn,.TOC.@tocbase
+ .previous
+ .align 2
+.L.caml_callback_exn:
+ /* Initial shuffling of arguments */
+ mr 0, 3 /* Closure */
+ mr 3, 4 /* Argument */
+ mr 4, 0
+ ld 12, 0(4) /* Code pointer */
+ b .L102
+ .size .L.caml_callback_exn,.-.L.caml_callback_exn
+
+
+ .globl caml_callback2_exn
+ .type caml_callback2_exn, @function
+ .section ".opd","aw"
+ .align 3
+caml_callback2_exn:
+ .quad .L.caml_callback2_exn,.TOC.@tocbase
+ .previous
+ .align 2
+.L.caml_callback2_exn:
+ mr 0, 3 /* Closure */
+ mr 3, 4 /* First argument */
+ mr 4, 5 /* Second argument */
+ mr 5, 0
+ Addrglobal(12, caml_apply2)
+ b .L102
+ .size .L.caml_callback2_exn,.-.L.caml_callback2_exn
+
+
+ .globl caml_callback3_exn
+ .type caml_callback3_exn, @function
+ .section ".opd","aw"
+ .align 3
+caml_callback3_exn:
+ .quad .L.caml_callback3_exn,.TOC.@tocbase
+ .previous
+ .align 2
+.L.caml_callback3_exn:
+ mr 0, 3 /* Closure */
+ mr 3, 4 /* First argument */
+ mr 4, 5 /* Second argument */
+ mr 5, 6 /* Third argument */
+ mr 6, 0
+ Addrglobal(12, caml_apply3)
+ b .L102
+ .size .L.caml_callback3_exn,.-.L.caml_callback3_exn
+
+/* Frame table */
+
+ .section ".data"
+ .globl caml_system__frametable
+ .type caml_system__frametable, @object
+caml_system__frametable:
+ .quad 1 /* one descriptor */
+ .quad .L105 + 4 /* return address into callback */
+ .short -1 /* negative size count => use callback link */
+ .short 0 /* no roots here */
+ .align 3
+
diff --git a/asmrun/stack.h b/asmrun/stack.h
index 6e55942..81263da 100644
--- a/asmrun/stack.h
+++ b/asmrun/stack.h
@@ -46,6 +46,15 @@
#define Callback_link(sp) ((struct caml_context *)((sp) + Trap_frame_size))
#endif
+#ifdef TARGET_power64
+#define Saved_return_address(sp) *((intnat *)((sp) +16))
+#define Already_scanned(sp, retaddr) ((retaddr) & 1)
+#define Mark_scanned(sp, retaddr) (Saved_return_address(sp) = (retaddr) | 1)
+#define Mask_already_scanned(retaddr) ((retaddr) & ~1)
+#define Trap_frame_size 0x150
+#define Callback_link(sp) ((struct caml_context *)((sp) + Trap_frame_size))
+#endif
+
#ifdef TARGET_arm
#define Saved_return_address(sp) *((intnat *)((sp) - 4))
#define Callback_link(sp) ((struct caml_context *)((sp) + 8))
diff --git a/configure b/configure
index d006010..cb289fb 100755
--- a/configure
+++ b/configure
@@ -843,6 +843,7 @@ case "$target" in
fi;;
i[3456]86-*-gnu*) arch=i386; system=gnu;;
i[3456]86-*-mingw*) arch=i386; system=mingw;;
+ powerpc64-*-linux*) arch=power64; model=ppc64; system=elf;;
powerpc*-*-linux*) arch=power; model=ppc; system=elf;;
powerpc-*-netbsd*) arch=power; model=ppc; system=elf;;
powerpc-*-openbsd*) arch=power; model=ppc; system=bsd_elf;;
@@ -923,6 +924,8 @@ case "$arch,$system" in
aspp="/usr/ccs/bin/${TOOLPREF}as -P";;
power,elf) as="${TOOLPREF}as -u -m ppc"
aspp="${TOOLPREF}gcc -c";;
+ power64,elf) as='${TOOLPREF}as -u -m ppc64'
+ aspp='${TOOLPREF}gcc -c';;
power,rhapsody) as="${TOOLPREF}as -arch $model"
aspp="$bytecc -c";;
sparc,solaris) as="${TOOLPREF}as"
--
2.4.3