diff options
| author | Xavier Leroy <xavierleroy@users.noreply.github.com> | 2015-04-22 14:27:12 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavierleroy@users.noreply.github.com> | 2015-04-22 14:27:12 +0200 |
| commit | 0bf99217426a44046ef0aaa7f84a9b2a3646ed89 (patch) | |
| tree | e4f983980a5001792b90ed8f3dbd8fa241e43eb1 /common/AST.v | |
| parent | 08b2b46f15e70b11c044e4e9a7c8438a96d57ed7 (diff) | |
| parent | ca4aa822693f4d98de99fd3f13c1523d733e1cb0 (diff) | |
| download | compcert-0bf99217426a44046ef0aaa7f84a9b2a3646ed89.tar.gz compcert-0bf99217426a44046ef0aaa7f84a9b2a3646ed89.zip | |
Merge pull request #40 from AbsInt/inline-asm
GCC-style extended inline asm.
The subset implemented is:
- zero or one output
- output constraints "=r" (to register) or "=m" (to memory)
- zero, one or several inputs
- input constraints "r" (in register), "m" (in memory), "i" and "n" (compile-time integer constant)
- clobbered registers (the 3rd argument)
- both anonymous (%3) and named (%[name]) operands
- modifiers %R and %Q to refer to the most significant / least significant part of a register pair holding a 64-bit integer. (Undocumented GCC ARM feature.)
All asm statements are treated as "volatile", possibly modifying memory and condition codes.
Diffstat (limited to 'common/AST.v')
| -rw-r--r-- | common/AST.v | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/common/AST.v b/common/AST.v index d2926178..2550844b 100644 --- a/common/AST.v +++ b/common/AST.v @@ -584,7 +584,7 @@ Inductive external_function : Type := (** Another form of annotation that takes one argument, produces an event carrying the text and the value of this argument, and returns the value of the argument. *) - | EF_inline_asm (text: ident). + | EF_inline_asm (text: ident) (sg: signature) (clobbers: list ident). (** Inline [asm] statements. Semantically, treated like an annotation with no parameters ([EF_annot text nil]). To be used with caution, as it can invalidate the semantic @@ -606,7 +606,7 @@ Definition ef_sig (ef: external_function): signature := | EF_memcpy sz al => mksignature (Tint :: Tint :: nil) None cc_default | EF_annot text targs => mksignature targs None cc_default | EF_annot_val text targ => mksignature (targ :: nil) (Some targ) cc_default - | EF_inline_asm text => mksignature nil None cc_default + | EF_inline_asm text sg clob => sg end. (** Whether an external function should be inlined by the compiler. *) @@ -624,7 +624,7 @@ Definition ef_inline (ef: external_function) : bool := | EF_memcpy sz al => true | EF_annot text targs => true | EF_annot_val text targ => true - | EF_inline_asm text => true + | EF_inline_asm text sg clob => true end. (** Whether an external function must reload its arguments. *) @@ -642,6 +642,7 @@ Proof. generalize ident_eq signature_eq chunk_eq typ_eq zeq Int.eq_dec; intros. decide equality. apply list_eq_dec. auto. + apply list_eq_dec. auto. Defined. Global Opaque external_function_eq. |