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|
-- X86 ABI definitions.
-- Copyright (C) 2006 Tristan Gingold
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 2 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <gnu.org/licenses>.
with System;
with Ada.Text_IO;
with Ortho_Code.Decls; use Ortho_Code.Decls;
with Ortho_Code.Exprs; use Ortho_Code.Exprs;
with Ortho_Code.Consts;
with Ortho_Code.Debug;
with Ortho_Code.Disps;
with Ortho_Code.Flags;
with Ortho_Code.Dwarf;
with Ortho_Code.X86; use Ortho_Code.X86;
with Ortho_Code.X86.Insns;
with Ortho_Code.X86.Emits;
with Binary_File;
with Binary_File.Memory;
package body Ortho_Code.X86.Abi is
-- First argument is at %ebp + 8 / %rbp + 16
Subprg_Stack_Init : constant Int32 :=
Boolean'Pos (Flags.M64) * 16
+ Boolean'Pos (not Flags.M64) * 8;
procedure Start_Subprogram (Subprg : O_Dnode; Abi : out O_Abi_Subprg)
is
pragma Unreferenced (Subprg);
begin
Abi := (Offset => Subprg_Stack_Init, Inum => 0, Fnum => 0);
end Start_Subprogram;
type Regs_List is array (Boolean range <>, Natural range <>) of O_Reg;
Int_Regs : constant Regs_List :=
(False => (R_Di, R_Si, R_Dx, R_Cx, R_R8, R_R9),
True => (R_Cx, R_Dx, R_R8, R_R9, R_None, R_None));
Sse_Regs : constant Regs_List :=
(False => (R_Xmm0, R_Xmm1, R_Xmm2, R_Xmm3,
R_Xmm4, R_Xmm5, R_Xmm6, R_Xmm7),
True => (R_Xmm0, R_Xmm1, R_Xmm2, R_Xmm3,
R_None, R_None, R_None, R_None));
procedure New_Interface (Inter : O_Dnode; Abi : in out O_Abi_Subprg)
is
Itype : constant O_Tnode := Get_Decl_Type (Inter);
Size : Uns32;
Reg : O_Reg;
begin
Reg := R_None;
if Flags.M64 then
-- AMD64 ABI 3.2.3 Parameter passing
-- The size of each argument gets rounded up to eight bytes.
case Get_Type_Mode (Itype) is
when Mode_Int | Mode_Uns | Mode_B2 | Mode_P64 =>
if Abi.Inum <= Int_Regs'Last (2) then
Reg := Int_Regs (Flags.Win64, Abi.Inum);
Abi.Inum := Abi.Inum + 1;
end if;
when Mode_Fp =>
if Abi.Fnum <= Sse_Regs'Last (2) then
Reg := Sse_Regs (Flags.Win64, Abi.Fnum);
Abi.Fnum := Abi.Fnum + 1;
end if;
when others =>
-- Parameters are scalars.
raise Program_Error;
end case;
if Reg = R_None then
-- Passed on the stack, need 8 bytes.
Size := 8;
else
-- Passed by a register.
Size := 0;
end if;
else
Size := Get_Type_Size (Itype);
Size := (Size + 3) and not 3;
end if;
Set_Decl_Reg (Inter, Reg);
Set_Local_Offset (Inter, Abi.Offset);
Abi.Offset := Abi.Offset + Int32 (Size);
end New_Interface;
procedure Finish_Subprogram (Subprg : O_Dnode; Abi : in out O_Abi_Subprg)
is
use Binary_File;
function To_Int32 is new Ada.Unchecked_Conversion
(Source => Symbol, Target => Int32);
begin
Set_Decl_Info
(Subprg, To_Int32 (Create_Symbol (Get_Decl_Ident (Subprg), True)));
-- Offset is 8/16 biased.
Set_Subprg_Stack (Subprg, Abi.Offset - Subprg_Stack_Init);
end Finish_Subprogram;
procedure Link_Stmt (Stmt : O_Enode) is
begin
Set_Stmt_Link (Last_Link, Stmt);
Last_Link := Stmt;
end Link_Stmt;
procedure Disp_Subprg (Subprg : O_Dnode);
Exprs_Mark : Exprs.Mark_Type;
Decls_Mark : Decls.Mark_Type;
Consts_Mark : Consts.Mark_Type;
Types_Mark : Types.Mark_Type;
Dwarf_Mark : Dwarf.Mark_Type;
procedure Start_Body (Subprg : O_Dnode)
is
pragma Unreferenced (Subprg);
begin
if not Debug.Flag_Debug_Keep then
Mark (Exprs_Mark);
Mark (Decls_Mark);
Consts.Mark (Consts_Mark);
Mark (Types_Mark);
end if;
end Start_Body;
procedure Finish_Body (Subprg : Subprogram_Data_Acc)
is
pragma Assert (Subprg = Cur_Subprg);
use Ortho_Code.Flags;
Child : Subprogram_Data_Acc;
begin
if Debug.Flag_Debug_Hli then
Disps.Disp_Subprg (Subprg);
return;
end if;
Insns.Gen_Subprg_Insns (Subprg);
if Ortho_Code.Debug.Flag_Debug_Body then
Disp_Subprg_Body (1, Subprg.E_Entry);
end if;
if Ortho_Code.Debug.Flag_Debug_Code then
Disp_Subprg (Subprg.D_Body);
end if;
Emits.Emit_Subprg (Subprg);
if Get_Decl_Depth (Subprg.D_Decl) = O_Toplevel
and then Flag_Debug /= Debug_None
then
Dwarf.Emit_Decls_Until (Subprg.D_Body);
if not Debug.Flag_Debug_Keep then
Dwarf.Mark (Dwarf_Mark);
end if;
end if;
-- Recurse on nested subprograms.
Child := Subprg.First_Child;
while Child /= null loop
Cur_Subprg := Child;
Finish_Body (Child);
Child := Child.Brother;
end loop;
Cur_Subprg := Subprg;
if Get_Decl_Depth (Subprg.D_Decl) = O_Toplevel then
-- Only for top-level subprograms.
if Flag_Debug /= Debug_None then
Dwarf.Emit_Subprg (Subprg.D_Body);
end if;
if not Debug.Flag_Debug_Keep then
Release (Exprs_Mark);
Release (Decls_Mark);
Consts.Release (Consts_Mark);
Release (Types_Mark);
if Flag_Debug /= Debug_None then
Dwarf.Release (Dwarf_Mark);
end if;
end if;
end if;
end Finish_Body;
procedure Finish_Body is
begin
Finish_Body (Cur_Subprg);
end Finish_Body;
procedure Expand_Const_Decl (Decl : O_Dnode) is
begin
Emits.Emit_Const_Decl (Decl);
end Expand_Const_Decl;
procedure Expand_Var_Decl (Decl : O_Dnode) is
begin
Emits.Emit_Var_Decl (Decl);
end Expand_Var_Decl;
procedure Expand_Var_Zero (Decl : O_Dnode) is
begin
Emits.Emit_Var_Zero (Decl);
end Expand_Var_Zero;
procedure Expand_Init_Value (Decl : O_Dnode; Val : O_Cnode) is
begin
Emits.Emit_Init_Value (Decl, Val);
end Expand_Init_Value;
procedure Disp_Label (Label : O_Enode)
is
use Ada.Text_IO;
use Ortho_Code.Debug.Int32_IO;
begin
Put ("L");
Put (Int32 (Label), 0);
end Disp_Label;
procedure Disp_Reg (Reg : O_Enode)
is
use Ada.Text_IO;
use Ortho_Code.Debug.Int32_IO;
begin
Put ("reg_");
Put (Int32 (Reg), 0);
Put ("{");
Put (Image_Reg (Get_Expr_Reg (Reg)));
Put ("}");
end Disp_Reg;
procedure Disp_Local (Stmt : O_Enode)
is
use Ada.Text_IO;
use Ortho_Code.Debug.Int32_IO;
Obj : constant O_Dnode := Get_Addr_Decl (Stmt);
Frame : constant O_Enode := Get_Addrl_Frame (Stmt);
begin
if Frame = O_Enode_Null then
Put ("fp");
else
Disp_Reg (Frame);
end if;
Put (",");
Put (Get_Local_Offset (Obj), 0);
Put (" {");
Disp_Decl_Name (Obj);
Put (":");
Debug.Disp_Mode (Types.Get_Type_Mode (Get_Decl_Type (Obj)));
Put ("}");
end Disp_Local;
procedure Disp_Uns32 (Val : Uns32)
is
use Ada.Text_IO;
U2c : constant array (Uns32 range 0 .. 15) of Character
:= "0123456789abcdef";
V : Uns32 := Val;
begin
for I in 0 .. 7 loop
Put (U2c (Shift_Right (V, 28)));
V := Shift_Left (V, 4);
end loop;
end Disp_Uns32;
procedure Disp_Const (Stmt : O_Enode)
is
use Ada.Text_IO;
begin
Put ("[");
case Get_Expr_Mode (Stmt) is
when Mode_U64
| Mode_I64
| Mode_F64 =>
Disp_Uns32 (Get_Expr_High (Stmt));
Put (",");
when others =>
null;
end case;
Disp_Uns32 (Get_Expr_Low (Stmt));
Put ("]");
end Disp_Const;
procedure Disp_Irm_Code (Stmt : O_Enode)
is
use Ada.Text_IO;
Reg : O_Reg;
Kind : OE_Kind;
begin
Reg := Get_Expr_Reg (Stmt);
Kind := Get_Expr_Kind (Stmt);
case Reg is
when R_Mem =>
case Kind is
when OE_Indir =>
Put ('(');
Disp_Irm_Code (Get_Expr_Operand (Stmt));
Put (')');
-- when OE_Lit =>
-- Put ("(&n)");
when others =>
raise Program_Error;
end case;
when R_Imm =>
case Kind is
when OE_Const =>
Disp_Const (Stmt);
when OE_Addrd =>
Put ("&");
Disp_Decl_Name (Get_Addr_Decl (Stmt));
when OE_Add =>
Disp_Irm_Code (Get_Expr_Left (Stmt));
Put ("+");
Disp_Irm_Code (Get_Expr_Right (Stmt));
when others =>
raise Program_Error;
end case;
when Regs_R32
| R_Any32
| R_Any8
| Regs_Pair
| R_AnyPair
| Regs_Cc
| Regs_Fp
| Regs_Xmm =>
Disp_Reg (Stmt);
when R_Spill =>
Disp_Reg (Stmt);
--Disp_Irm_Code (Get_Stmt_Link (Stmt));
when R_B_Off
| R_I_Off
| R_B_I
| R_Sib =>
case Kind is
when OE_Addrl =>
Disp_Local (Stmt);
when OE_Add =>
Disp_Irm_Code (Get_Expr_Left (Stmt));
Put (" + ");
Disp_Irm_Code (Get_Expr_Right (Stmt));
when OE_Addrd =>
Put ("&");
Disp_Decl_Name (Get_Addr_Decl (Stmt));
when others =>
raise Program_Error;
end case;
when R_I =>
Disp_Irm_Code (Get_Expr_Left (Stmt));
Put (" * ");
case Get_Expr_Low (Get_Expr_Right (Stmt)) is
when 0 =>
Put ('1');
when 1 =>
Put ('2');
when 2 =>
Put ('4');
when 3 =>
Put ('8');
when others =>
Put ('?');
end case;
when others =>
Ada.Text_IO.Put_Line
("abi.disp_irm_code: unhandled reg=" & Image_Reg (Reg)
& ", stmt=" & O_Enode'Image (Stmt));
raise Program_Error;
end case;
end Disp_Irm_Code;
procedure Disp_Decls (Block : O_Dnode)
is
Decl : O_Dnode;
Last : O_Dnode;
begin
Last := Get_Block_Last (Block);
Disp_Decl (2, Block);
Decl := Block + 1;
while Decl <= Last loop
case Get_Decl_Kind (Decl) is
when OD_Local =>
Disp_Decl (2, Decl);
when OD_Block =>
-- Skip internal blocks.
Decl := Get_Block_Last (Decl);
when others =>
Disp_Decl (2, Decl);
null;
end case;
Decl := Decl + 1;
end loop;
end Disp_Decls;
procedure Disp_Stmt (Stmt : O_Enode)
is
use Ada.Text_IO;
use Debug.Int32_IO;
Kind : constant OE_Kind := Get_Expr_Kind (Stmt);
Mode : constant Mode_Type := Get_Expr_Mode (Stmt);
procedure Disp_Op_Name (Name : String) is
begin
Put (Name);
Put (":");
Debug.Disp_Mode (Mode);
Put (" ");
end Disp_Op_Name;
procedure Disp_Reg_Op_Name (Name : String) is
begin
Put (" ");
Disp_Reg (Stmt);
Put (" = ");
Disp_Op_Name (Name);
end Disp_Reg_Op_Name;
begin
case Kind is
when OE_Beg =>
Put (" # block start");
if Get_Block_Has_Alloca (Stmt) then
Put (" [alloca]");
end if;
New_Line;
Disp_Decls (Get_Block_Decls (Stmt));
when OE_End =>
Put_Line (" # block end");
when OE_Indir =>
Disp_Reg_Op_Name ("indir");
Put ("(");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
Put_Line (")");
when OE_Alloca =>
Disp_Reg_Op_Name ("alloca");
Put ("(");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
Put_Line (")");
when OE_Kind_Cmp
| OE_Kind_Dyadic =>
Disp_Reg_Op_Name ("op");
Put ("{");
Put (OE_Kind'Image (Kind));
Put ("} ");
Disp_Irm_Code (Get_Expr_Left (Stmt));
Put (", ");
Disp_Irm_Code (Get_Expr_Right (Stmt));
New_Line;
when OE_Abs_Ov
| OE_Neg_Ov
| OE_Not =>
Disp_Reg_Op_Name ("op");
Put ("{");
Put (OE_Kind'Image (Kind));
Put ("} ");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
New_Line;
when OE_Const =>
Disp_Reg_Op_Name ("const");
Disp_Const (Stmt);
New_Line;
when OE_Jump_F =>
Put (" jump_f ");
Disp_Reg (Get_Expr_Operand (Stmt));
Put (" ");
Disp_Label (Get_Jump_Label (Stmt));
New_Line;
when OE_Jump_T =>
Put (" jump_t ");
Disp_Reg (Get_Expr_Operand (Stmt));
Put (" ");
Disp_Label (Get_Jump_Label (Stmt));
New_Line;
when OE_Jump =>
Put (" jump ");
Disp_Label (Get_Jump_Label (Stmt));
New_Line;
when OE_Label =>
Disp_Label (Stmt);
Put_Line (":");
when OE_Asgn =>
Put (" assign:");
Debug.Disp_Mode (Mode);
Put (" (");
Disp_Irm_Code (Get_Assign_Target (Stmt));
Put (") <- ");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
New_Line;
when OE_Set_Stack =>
Put (" set_stack");
Put (" <- ");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
New_Line;
when OE_Spill =>
Disp_Reg_Op_Name ("spill");
Disp_Reg (Get_Expr_Operand (Stmt));
Put (", offset=");
Put (Int32'Image (Get_Spill_Info (Stmt)));
New_Line;
when OE_Reload =>
Disp_Reg_Op_Name ("reload");
Disp_Reg (Get_Expr_Operand (Stmt));
New_Line;
when OE_Arg =>
Put (" push ");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
New_Line;
when OE_Call =>
if Get_Expr_Mode (Stmt) /= Mode_Nil then
Disp_Reg_Op_Name ("call");
else
Put (" ");
Disp_Op_Name ("call");
Put (" ");
end if;
Disp_Decl_Name (Get_Call_Subprg (Stmt));
New_Line;
when OE_Stack_Adjust =>
Put (" stack_adjust: ");
Put (Int32'Image (Get_Stack_Adjust (Stmt)));
New_Line;
when OE_Intrinsic =>
Disp_Reg_Op_Name ("intrinsic");
Put (" ");
case Get_Intrinsic_Operation (Stmt) is
when Intrinsic_Mul_Ov_U64 =>
Put ("mul_ov_U64");
when Intrinsic_Div_Ov_U64 =>
Put ("div_ov_U64");
when Intrinsic_Mod_Ov_U64 =>
Put ("mod_ov_U64");
when Intrinsic_Mul_Ov_I64 =>
Put ("mul_ov_I64");
when Intrinsic_Div_Ov_I64 =>
Put ("div_ov_I64");
when Intrinsic_Mod_Ov_I64 =>
Put ("mod_ov_I64");
when Intrinsic_Rem_Ov_I64 =>
Put ("rem_ov_I64");
when others =>
Put ("??");
end case;
--Disp_Decl_Name (Get_Call_Subprg (Stmt));
New_Line;
when OE_Conv_Ov =>
Disp_Reg_Op_Name ("conv");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
New_Line;
when OE_Move =>
Disp_Reg_Op_Name ("move");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
New_Line;
when OE_Ret =>
Put (" ret");
if Get_Expr_Mode (Stmt) /= Mode_Nil then
Put (" ");
Disp_Reg (Get_Expr_Operand (Stmt));
end if;
New_Line;
when OE_Case =>
Disp_Reg_Op_Name ("case");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
New_Line;
when OE_Case_Expr =>
Disp_Reg_Op_Name ("case_expr");
Disp_Irm_Code (Get_Expr_Operand (Stmt));
New_Line;
when OE_Leave =>
Put_Line ("leave");
when OE_Entry =>
Put_Line ("entry");
when OE_Line =>
Put (" # line #");
Put (Get_Expr_Line_Number (Stmt), 0);
New_Line;
when OE_Addrl =>
Disp_Reg_Op_Name ("lea{addrl}");
Put ("(");
Disp_Local (Stmt);
Put (")");
New_Line;
when OE_Addrd =>
Disp_Reg_Op_Name ("lea{addrd}");
Put ("&");
Disp_Decl_Name (Get_Addr_Decl (Stmt));
New_Line;
when OE_Add =>
Disp_Reg_Op_Name ("lea{add}");
Put ("(");
Disp_Irm_Code (Get_Expr_Left (Stmt));
Put (" + ");
Disp_Irm_Code (Get_Expr_Right (Stmt));
Put (")");
New_Line;
when OE_Mul =>
Disp_Reg_Op_Name ("mul");
Disp_Irm_Code (Get_Expr_Left (Stmt));
Put (", ");
Disp_Irm_Code (Get_Expr_Right (Stmt));
New_Line;
when OE_Shl =>
Disp_Reg_Op_Name ("shl");
Disp_Irm_Code (Get_Expr_Left (Stmt));
Put (", ");
Disp_Irm_Code (Get_Expr_Right (Stmt));
New_Line;
when OE_Reg =>
Disp_Reg_Op_Name ("reg");
New_Line;
when others =>
Ada.Text_IO.Put_Line
("abi.disp_stmt: unhandled enode " & OE_Kind'Image (Kind));
raise Program_Error;
end case;
end Disp_Stmt;
procedure Disp_Subprg_Decl (Decl : O_Dnode)
is
use Ada.Text_IO;
Arg : O_Dnode;
begin
Put ("subprogram ");
Disp_Decl_Name (Decl);
Put_Line (":");
Arg := Decl + 1;
while Get_Decl_Kind (Arg) = OD_Interface loop
Disp_Decl (2, Arg);
Arg := Arg + 1;
end loop;
end Disp_Subprg_Decl;
procedure Disp_Subprg (Subprg : O_Dnode)
is
Stmt : O_Enode;
begin
Disp_Subprg_Decl (Get_Body_Decl (Subprg));
Stmt := Get_Body_Stmt (Subprg);
loop
exit when Stmt = O_Enode_Null;
Disp_Stmt (Stmt);
exit when Get_Expr_Kind (Stmt) = OE_Leave;
Stmt := Get_Stmt_Link (Stmt);
end loop;
end Disp_Subprg;
procedure New_Debug_Filename_Decl (Filename : String)
is
use Ortho_Code.Flags;
begin
if Flag_Debug /= Debug_None then
Dwarf.Set_Filename ("", Filename);
end if;
end New_Debug_Filename_Decl;
procedure Init
is
use Ortho_Code.Debug;
begin
-- Alignment of doubles is platform dependent.
Mode_Align (Mode_F64) := X86.Flags.Mode_F64_Align;
if Flag_Debug_Hli then
Disps.Init;
else
Emits.Init;
end if;
end Init;
procedure Finish
is
use Ortho_Code.Debug;
begin
if Flag_Debug_Hli then
Disps.Finish;
else
Emits.Finish;
end if;
end Finish;
-- function Image_Insn (Insn : O_Insn) return String is
-- begin
-- case Insn is
-- when Insn_Nil =>
-- return "nil";
-- when Insn_Imm =>
-- return "imm";
-- when Insn_Base_Off =>
-- return "B+O";
-- when Insn_Loadm =>
-- return "ldm";
-- when Insn_Loadi =>
-- return "ldi";
-- when Insn_Mem =>
-- return "mem";
-- when Insn_Cmp =>
-- return "cmp";
-- when Insn_Op =>
-- return "op ";
-- when Insn_Rop =>
-- return "rop";
-- when Insn_Call =>
-- return "cal";
-- when others =>
-- return "???";
-- end case;
-- end Image_Insn;
function Image_Reg (Reg : O_Reg) return String is
begin
case Reg is
when R_Nil =>
return "nil ";
when R_None =>
return " -- ";
when R_Spill =>
return "spil";
when R_Mem =>
return "mem ";
when R_Imm =>
return "imm ";
when R_Irm =>
return "irm ";
when R_Rm =>
return "rm ";
when R_Sib =>
return "sib ";
when R_B_Off =>
return "b+o ";
when R_B_I =>
return "b+i ";
when R_I =>
return "s*i ";
when R_Ir =>
return " ir ";
when R_I_Off =>
return "i+o ";
when R_Any_Cc =>
return "cc ";
when R_Any8 =>
return "r8 ";
when R_Any32 =>
return "r32 ";
when R_Any64 =>
return "r64 ";
when R_AnyPair =>
return "pair";
when R_St0 =>
return "st0 ";
when R_Ax =>
return "ax ";
when R_Dx =>
return "dx ";
when R_Cx =>
return "cx ";
when R_Bx =>
return "bx ";
when R_Si =>
return "si ";
when R_Di =>
return "di ";
when R_Sp =>
return "sp ";
when R_Bp =>
return "bp ";
when R_R8 =>
return "r8 ";
when R_R9 =>
return "r9 ";
when R_R10 =>
return "r10 ";
when R_R11 =>
return "r11 ";
when R_R12 =>
return "r12 ";
when R_R13 =>
return "r13 ";
when R_R14 =>
return "r14 ";
when R_R15 =>
return "r15 ";
when R_Edx_Eax =>
return "dxax";
when R_Ebx_Ecx =>
return "bxcx";
when R_Esi_Edi =>
return "sidi";
when R_Eq =>
return "eq? ";
when R_Ne =>
return "ne? ";
when R_Uge =>
return "uge?";
when R_Sge =>
return "sge?";
when R_Ugt =>
return "ugt?";
when R_Sgt =>
return "sgt?";
when R_Ule =>
return "ule?";
when R_Sle =>
return "sle?";
when R_Ult =>
return "ult?";
when R_Slt =>
return "slt?";
when R_Xmm0 =>
return "xmm0";
when R_Xmm1 =>
return "xmm1";
when R_Xmm2 =>
return "xmm2";
when R_Xmm3 =>
return "xmm3";
when others =>
return "????";
end case;
end Image_Reg;
-- From GCC.
-- FIXME: these don't handle overflow!
function Divdi3 (A, B : Long_Integer) return Long_Integer;
pragma Import (C, Divdi3, "__divdi3");
function Muldi3 (A, B : Long_Integer) return Long_Integer;
pragma Import (C, Muldi3, "__muldi3");
function Moddi3 (A, B : Long_Integer) return Long_Integer;
pragma Import (C, Moddi3, "__moddi3");
procedure Chkstk (Sz : Integer);
pragma Import (C, Chkstk, "__chkstk");
procedure Link_Intrinsics is
begin
if not Flags.M64 then
Binary_File.Memory.Set_Symbol_Address
(Ortho_Code.X86.Emits.Intrinsics_Symbol
(Ortho_Code.X86.Intrinsic_Mul_Ov_I64),
Muldi3'Address);
Binary_File.Memory.Set_Symbol_Address
(Ortho_Code.X86.Emits.Intrinsics_Symbol
(Ortho_Code.X86.Intrinsic_Div_Ov_I64),
Divdi3'Address);
Binary_File.Memory.Set_Symbol_Address
(Ortho_Code.X86.Emits.Intrinsics_Symbol
(Ortho_Code.X86.Intrinsic_Mod_Ov_I64),
Moddi3'Address);
end if;
if X86.Flags.Flag_Alloca_Call then
Binary_File.Memory.Set_Symbol_Address
(Ortho_Code.X86.Emits.Chkstk_Symbol, Chkstk'Address);
end if;
end Link_Intrinsics;
type Void is null record;
type Void_Ptr is access Void;
-- From GCC unwind-dw2-fde.h
type Frame_Info_Object is record
pc_begin : Void_Ptr;
tbase : Void_Ptr;
dbase : Void_Ptr;
U : Void_Ptr;
S : Void_Ptr;
fde_end : Void_Ptr; -- Maybe optional
next : Void_Ptr;
end record;
pragma Convention (C, Frame_Info_Object);
-- Object for the generated code.
This_Object : Frame_Info_Object;
procedure Register_Unwind
is
use Binary_File.Memory;
use System;
-- From GCC unwind-dw2-fde.h
procedure Register_Frame_Info_Bases
(Eh_Frame : Address;
Object : Address;
Tbase : Address;
Dbase : Address);
pragma Import (C, Register_Frame_Info_Bases,
"__register_frame_info_bases");
begin
if X86.Flags.Eh_Frame then
Register_Frame_Info_Bases
(Get_Section_Addr (X86.Emits.Sect_Eh_Frame),
This_Object'Address,
Get_Section_Addr (X86.Emits.Sect_Text),
Get_Section_Addr (X86.Emits.Sect_Bss));
end if;
end Register_Unwind;
procedure Unregister_Unwind
is
use Binary_File.Memory;
use System;
-- From GCC unwind-dw2-fde.h
procedure Deregister_Frame_Info_Bases (Eh_Frame : Address);
pragma Import (C, Deregister_Frame_Info_Bases,
"__deregister_frame_info_bases");
begin
if X86.Flags.Eh_Frame then
Deregister_Frame_Info_Bases
(Get_Section_Addr (X86.Emits.Sect_Eh_Frame));
end if;
end Unregister_Unwind;
end Ortho_Code.X86.Abi;
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