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| author | Cyril SIX <cyril.six@kalray.eu> | 2019-07-30 16:46:16 +0200 |
|---|---|---|
| committer | Cyril SIX <cyril.six@kalray.eu> | 2019-07-30 16:46:16 +0200 |
| commit | ce33586e40bf7be637b932d363275b9d5761a3a0 (patch) | |
| tree | 943b85a5e32a01c0a38dac004d3f0e4e977030e7 /mppa_k1c/Asmvliw.v | |
| parent | 5b4560bd853cbcf1ef195da1b625f37609ec00ec (diff) | |
| download | compcert-kvx-ce33586e40bf7be637b932d363275b9d5761a3a0.tar.gz compcert-kvx-ce33586e40bf7be637b932d363275b9d5761a3a0.zip | |
(#156) - Un peu de cleaning et de doc
Diffstat (limited to 'mppa_k1c/Asmvliw.v')
| -rw-r--r-- | mppa_k1c/Asmvliw.v | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/mppa_k1c/Asmvliw.v b/mppa_k1c/Asmvliw.v index c6dd85f4..72584d2a 100644 --- a/mppa_k1c/Asmvliw.v +++ b/mppa_k1c/Asmvliw.v @@ -17,8 +17,6 @@ (** Abstract syntax and semantics for VLIW semantics of K1c assembly language. *) -(* FIXME: develop/fix the comments in this file *) - Require Import Coqlib. Require Import Maps. Require Import AST. @@ -45,8 +43,7 @@ Require Import Chunks. this view induces our sequential semantics of bundles defined in [Asmblock]. *) -(** General Purpose registers. -*) +(** General Purpose registers. *) Inductive gpreg: Type := | GPR0: gpreg | GPR1: gpreg | GPR2: gpreg | GPR3: gpreg | GPR4: gpreg @@ -152,9 +149,6 @@ Definition gpreg_o_expand (x : gpreg_o) : gpreg * gpreg * gpreg * gpreg := Lemma gpreg_o_eq : forall (x y : gpreg_o), {x=y} + {x<>y}. Proof. decide equality. Defined. -(** We model the following registers of the RISC-V architecture. *) - -(** basic register *) Inductive preg: Type := | IR: gpreg -> preg (**r integer general purpose registers *) | RA: preg @@ -173,7 +167,7 @@ End PregEq. Module Pregmap := EMap(PregEq). -(** Conventional names for stack pointer ([SP]) and return address ([RA]). *) +(** Conventional names for stack pointer ([SP]), return address ([RA]), frame pointer ([FP]) and other temporaries used *) Notation "'SP'" := GPR12 (only parsing) : asm. Notation "'FP'" := GPR17 (only parsing) : asm. @@ -188,9 +182,7 @@ Inductive btest: Type := | BTdgez (**r Double Greater Than or Equal to Zero *) | BTdlez (**r Double Less Than or Equal to Zero *) | BTdgtz (**r Double Greater Than Zero *) -(*| BTodd (**r Odd (LSB Set) *) - | BTeven (**r Even (LSB Clear) *) -*)| BTwnez (**r Word Not Equal to Zero *) + | BTwnez (**r Word Not Equal to Zero *) | BTweqz (**r Word Equal to Zero *) | BTwltz (**r Word Less Than Zero *) | BTwgez (**r Word Greater Than or Equal to Zero *) @@ -251,16 +243,7 @@ Definition offset : Type := ptrofs. Definition label := positive. -(* FIXME - rewrite the comment *) -(** A note on immediates: there are various constraints on immediate - operands to K1c instructions. We do not attempt to capture these - restrictions in the abstract syntax nor in the semantics. The - assembler will emit an error if immediate operands exceed the - representable range. Of course, our K1c generator (file - [Asmgen]) is careful to respect this range. *) - -(** Instructions to be expanded in control-flow -*) +(** Instructions to be expanded in control-flow *) Inductive ex_instruction : Type := (* Pseudo-instructions *) | Pbuiltin: external_function -> list (builtin_arg preg) |