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author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2011-04-09 16:59:13 +0000 |
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committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2011-04-09 16:59:13 +0000 |
commit | abe2bb5c40260a31ce5ee27b841bcbd647ff8b88 (patch) | |
tree | ae109a136508da283a9e2be5f039c5f9cca4f95c /backend/Mach.v | |
parent | ffd6080f9e1e742c73ac38354b31c6fc4e3963ba (diff) | |
download | compcert-abe2bb5c40260a31ce5ee27b841bcbd647ff8b88.tar.gz compcert-abe2bb5c40260a31ce5ee27b841bcbd647ff8b88.zip |
Merge of branch "unsigned-offsets":
- In pointer values "Vptr b ofs", interpret "ofs" as an unsigned int.
(Fixes issue with wrong comparison of pointers across 0x8000_0000)
- Revised Stacking pass to not use negative SP offsets.
- Add pointer validity checks to Cminor ... Mach
to support the use of memory injections in Stacking.
- Cleaned up Stacklayout modules.
- IA32: improved code generation for Mgetparam.
- ARM: improved code generation for op-immediate instructions.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1632 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'backend/Mach.v')
-rw-r--r-- | backend/Mach.v | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/backend/Mach.v b/backend/Mach.v index c6a692a1..223d5ab1 100644 --- a/backend/Mach.v +++ b/backend/Mach.v @@ -13,8 +13,7 @@ (** The Mach intermediate language: abstract syntax. Mach is the last intermediate language before generation of assembly - code. This file defines the abstract syntax for Mach; two dynamic - semantics are given in modules [Machabstr] and [Machconcr]. + code. *) Require Import Coqlib. @@ -25,6 +24,7 @@ Require Import Values. Require Import Memory. Require Import Events. Require Import Globalenvs. +Require Import Smallstep. Require Import Op. Require Import Locations. Require Import Conventions. @@ -40,7 +40,7 @@ Require Import Conventions. [Mgetstack] and [Msetstack] to read and write within the activation record for the current function, at a given word offset and with a given type; and [Mgetparam], to read within the activation record of - the caller. + the caller. These instructions implement a more concrete view of the activation record than the the [Lgetstack] and [Lsetstack] instructions of @@ -72,7 +72,6 @@ Record function: Type := mkfunction { fn_sig: signature; fn_code: code; fn_stacksize: Z; - fn_framesize: Z; fn_link_ofs: int; fn_retaddr_ofs: int }. |