From 7c9500e438384c6c0ce478c8c73b3887137ac924 Mon Sep 17 00:00:00 2001 From: xleroy Date: Sat, 14 Jul 2012 08:20:28 +0000 Subject: Remove the PowerPC/MacOS X port, as MacOS no longer supports PowerPC. git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1980 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e --- powerpc/macosx/Stacklayout.v | 138 ------------------------------------------- 1 file changed, 138 deletions(-) delete mode 100644 powerpc/macosx/Stacklayout.v (limited to 'powerpc/macosx/Stacklayout.v') diff --git a/powerpc/macosx/Stacklayout.v b/powerpc/macosx/Stacklayout.v deleted file mode 100644 index 57592a8c..00000000 --- a/powerpc/macosx/Stacklayout.v +++ /dev/null @@ -1,138 +0,0 @@ -(* *********************************************************************) -(* *) -(* The Compcert verified compiler *) -(* *) -(* Xavier Leroy, INRIA Paris-Rocquencourt *) -(* *) -(* Copyright Institut National de Recherche en Informatique et en *) -(* Automatique. All rights reserved. This file is distributed *) -(* under the terms of the INRIA Non-Commercial License Agreement. *) -(* *) -(* *********************************************************************) - -(** Machine- and ABI-dependent layout information for activation records. *) - -Require Import Coqlib. -Require Import Bounds. - -(** The general shape of activation records is as follows, - from bottom (lowest offsets) to top: -- 24 reserved bytes. The first 4 bytes hold the back pointer to the - activation record of the caller. We use the 4 bytes at offset 12 - to store the return address. (These are reserved by the PowerPC - application binary interface.) The remaining bytes are unused. -- Space for outgoing arguments to function calls. -- Local stack slots of integer type. -- Saved values of integer callee-save registers used by the function. -- One word of padding, if necessary to align the following data - on a 8-byte boundary. -- Local stack slots of float type. -- Saved values of float callee-save registers used by the function. -- Space for the stack-allocated data declared in Cminor. - -The [frame_env] compilation environment records the positions of -the boundaries between areas in the frame part. -*) - -Definition fe_ofs_arg := 24. - -Record frame_env : Type := mk_frame_env { - fe_size: Z; - fe_ofs_link: Z; - fe_ofs_retaddr: Z; - fe_ofs_int_local: Z; - fe_ofs_int_callee_save: Z; - fe_num_int_callee_save: Z; - fe_ofs_float_local: Z; - fe_ofs_float_callee_save: Z; - fe_num_float_callee_save: Z; - fe_stack_data: Z -}. - -(** Computation of the frame environment from the bounds of the current - function. *) - -Definition make_env (b: bounds) := - let oil := 24 + 4 * b.(bound_outgoing) in (* integer locals *) - let oics := oil + 4 * b.(bound_int_local) in (* integer callee-saves *) - let oendi := oics + 4 * b.(bound_int_callee_save) in - let ofl := align oendi 8 in (* float locals *) - let ofcs := ofl + 8 * b.(bound_float_local) in (* float callee-saves *) - let ostkdata := ofcs + 8 * b.(bound_float_callee_save) in (* stack data *) - let sz := align (ostkdata + b.(bound_stack_data)) 16 in - mk_frame_env sz 0 12 - oil oics b.(bound_int_callee_save) - ofl ofcs b.(bound_float_callee_save) - ostkdata. - -(** Separation property *) - -Remark frame_env_separated: - forall b, - let fe := make_env b in - 0 <= fe.(fe_ofs_link) - /\ fe.(fe_ofs_link) + 4 <= fe.(fe_ofs_retaddr) - /\ fe.(fe_ofs_retaddr) + 4 <= fe_ofs_arg - /\ fe_ofs_arg + 4 * b.(bound_outgoing) <= fe.(fe_ofs_int_local) - /\ fe.(fe_ofs_int_local) + 4 * b.(bound_int_local) <= fe.(fe_ofs_int_callee_save) - /\ fe.(fe_ofs_int_callee_save) + 4 * b.(bound_int_callee_save) <= fe.(fe_ofs_float_local) - /\ fe.(fe_ofs_float_local) + 8 * b.(bound_float_local) <= fe.(fe_ofs_float_callee_save) - /\ fe.(fe_ofs_float_callee_save) + 8 * b.(bound_float_callee_save) <= fe.(fe_stack_data) - /\ fe.(fe_stack_data) + b.(bound_stack_data) <= fe.(fe_size). -Proof. - intros. - generalize (align_le (fe.(fe_ofs_int_callee_save) + 4 * b.(bound_int_callee_save)) 8 (refl_equal _)). - generalize (align_le (fe.(fe_stack_data) + b.(bound_stack_data)) 16 (refl_equal _)). - unfold fe, make_env, fe_size, fe_ofs_link, fe_ofs_retaddr, - fe_ofs_int_local, fe_ofs_int_callee_save, - fe_num_int_callee_save, - fe_ofs_float_local, fe_ofs_float_callee_save, fe_num_float_callee_save, - fe_stack_data, fe_ofs_arg. - intros. - generalize (bound_int_local_pos b); intro; - generalize (bound_float_local_pos b); intro; - generalize (bound_int_callee_save_pos b); intro; - generalize (bound_float_callee_save_pos b); intro; - generalize (bound_outgoing_pos b); intro; - generalize (bound_stack_data_pos b); intro. - omega. -Qed. - -(** Alignment property *) - -Remark frame_env_aligned: - forall b, - let fe := make_env b in - (4 | fe.(fe_ofs_link)) - /\ (4 | fe.(fe_ofs_int_local)) - /\ (4 | fe.(fe_ofs_int_callee_save)) - /\ (8 | fe.(fe_ofs_float_local)) - /\ (8 | fe.(fe_ofs_float_callee_save)) - /\ (4 | fe.(fe_ofs_retaddr)) - /\ (4 | fe.(fe_stack_data)) - /\ (16 | fe.(fe_size)). -Proof. - intros. - unfold fe, make_env, fe_size, fe_ofs_link, fe_ofs_retaddr, - fe_ofs_int_local, fe_ofs_int_callee_save, - fe_num_int_callee_save, - fe_ofs_float_local, fe_ofs_float_callee_save, fe_num_float_callee_save, - fe_stack_data. - set (x1 := 24 + 4 * bound_outgoing b). - assert (4 | x1). unfold x1; apply Zdivide_plus_r. exists 6; auto. exists (bound_outgoing b); ring. - set (x2 := x1 + 4 * bound_int_local b). - assert (4 | x2). unfold x2; apply Zdivide_plus_r; auto. exists (bound_int_local b); ring. - set (x3 := x2 + 4 * bound_int_callee_save b). - set (x4 := align x3 8). - assert (8 | x4). unfold x4. apply align_divides. omega. - set (x5 := x4 + 8 * bound_float_local b). - assert (8 | x5). unfold x5. apply Zdivide_plus_r; auto. exists (bound_float_local b); ring. - set (x6 := x5 + 8 * bound_float_callee_save b). - assert (4 | x6). - apply Zdivides_trans with 8. exists 2; auto. - unfold x6. apply Zdivide_plus_r; auto. exists (bound_float_callee_save b); ring. - set (x7 := align (x6 + bound_stack_data b) 16). - assert (16 | x7). unfold x7; apply align_divides. omega. - intuition. - exists 3; auto. -Qed. -- cgit