From ea118d3897211b8b247fd1e9984c8e8939f31044 Mon Sep 17 00:00:00 2001
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: Fri, 7 Feb 2025 14:16:22 +0100
Subject: [PATCH] Revert "xfree86: loader: drop unused LoaderGetABIVersion()"

This reverts commit f3887956ecb33018c36fe9880e533045385570bd.

Proprietary NVidia drivers still needs it.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1773>
---
 hw/xfree86/common/xf86Module.h |  1 +
 hw/xfree86/loader/loader.c     | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/hw/xfree86/common/xf86Module.h b/hw/xfree86/common/xf86Module.h
index 6c25c4bd1..e06ea21c0 100644
--- a/hw/xfree86/common/xf86Module.h
+++ b/hw/xfree86/common/xf86Module.h
@@ -154,6 +154,7 @@ extern _X_EXPORT void *LoadSubModule(void *, const char *, const char **,
 extern _X_EXPORT void *LoaderSymbol(const char *);
 extern _X_EXPORT void *LoaderSymbolFromModule(void *, const char *);
 extern _X_EXPORT void LoaderErrorMsg(const char *, const char *, int, int);
+extern _X_EXPORT int LoaderGetABIVersion(const char *abiclass);
 
 typedef void *(*ModuleSetupProc) (void *, void *, int *, int *);
 typedef void (*ModuleTearDownProc) (void *);
diff --git a/hw/xfree86/loader/loader.c b/hw/xfree86/loader/loader.c
index 61fe04060..5ba41813c 100644
--- a/hw/xfree86/loader/loader.c
+++ b/hw/xfree86/loader/loader.c
@@ -153,3 +153,27 @@ LoaderSetOptions(unsigned long opts)
 {
     LoaderOptions |= opts;
 }
+
+int
+LoaderGetABIVersion(const char *abiclass)
+{
+    struct {
+        const char *name;
+        int version;
+    } classes[] = {
+        {ABI_CLASS_ANSIC, LoaderVersionInfo.ansicVersion},
+        {ABI_CLASS_VIDEODRV, LoaderVersionInfo.videodrvVersion},
+        {ABI_CLASS_XINPUT, LoaderVersionInfo.xinputVersion},
+        {ABI_CLASS_EXTENSION, LoaderVersionInfo.extensionVersion},
+        {NULL, 0}
+    };
+    int i;
+
+    for (i = 0; classes[i].name; i++) {
+        if (!strcmp(classes[i].name, abiclass)) {
+            return classes[i].version;
+        }
+    }
+
+    return 0;
+}