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[for-8.0,v3,15/45] tcg: Introduce TCGCallReturnKind and TCGCallArgumentKind

Message ID 20221111074101.2069454-16-richard.henderson@linaro.org
State Superseded
Headers show
Series tcg: Support for Int128 with helpers | expand

Commit Message

Richard Henderson Nov. 11, 2022, 7:40 a.m. UTC 
Prepare to replace a bunch of separate ifdefs with a
consistent way to describe the abi of a function call.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/tcg-internal.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

Comments

Philippe Mathieu-Daudé Nov. 22, 2022, 11:33 a.m. UTC | #1 
On 11/11/22 08:40, Richard Henderson wrote:
> Prepare to replace a bunch of separate ifdefs with a
> consistent way to describe the abi of a function call.

Nitpicking, s/abi/ABI/ like in patch 40 "Fill in the parameters for the 
host ABI for Int128".

> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   tcg/tcg-internal.h | 15 +++++++++++++++
>   1 file changed, 15 insertions(+)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Patch

diff --git a/tcg/tcg-internal.h b/tcg/tcg-internal.h
index 2c06b5116a..f574743ff8 100644
--- a/tcg/tcg-internal.h
+++ b/tcg/tcg-internal.h
@@ -27,6 +27,21 @@ 
 
 #define TCG_HIGHWATER 1024
 
+/*
+ * Describe the calling convention of a given argument type.
+ */
+typedef enum {
+    TCG_CALL_RET_NORMAL,         /* by registers */
+} TCGCallReturnKind;
+
+typedef enum {
+    TCG_CALL_ARG_NORMAL,         /* by registers (continuing onto stack) */
+    TCG_CALL_ARG_EVEN,           /* like normal, but skipping odd slots */
+    TCG_CALL_ARG_EXTEND,         /* for i32, as a sign/zero-extended i64 */
+    TCG_CALL_ARG_EXTEND_U,       /*      ... as a zero-extended i64 */
+    TCG_CALL_ARG_EXTEND_S,       /*      ... as a sign-extended i64 */
+} TCGCallArgumentKind;
+
 typedef struct TCGHelperInfo {
     void *func;
     const char *name;