From f39c00bbc5258d72328c1f37e993893b9ec321e4 Mon Sep 17 00:00:00 2001
From: Rachel Bousfield <nfranks@protonmail.com>
Date: Mon, 31 Jul 2023 13:29:28 -0600
Subject: [PATCH] add C sdk

---
 .gitmodules                   |  3 ++
 arbitrator/langs/c            |  1 +
 arbitrator/langs/c/arbitrum.h | 52 -----------------------------------
 3 files changed, 4 insertions(+), 52 deletions(-)
 create mode 160000 arbitrator/langs/c
 delete mode 100644 arbitrator/langs/c/arbitrum.h

diff --git a/.gitmodules b/.gitmodules
index 5310a56f4..71e8415cf 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -26,3 +26,6 @@
 [submodule "arbitrator/langs/rust"]
 	path = arbitrator/langs/rust
 	url = https://github.com/OffchainLabs/stylus-sdk-rs.git
+[submodule "arbitrator/langs/c"]
+	path = arbitrator/langs/c
+	url = https://github.com/OffchainLabs/stylus-sdk-c.git
diff --git a/arbitrator/langs/c b/arbitrator/langs/c
new file mode 160000
index 000000000..94331a5fc
--- /dev/null
+++ b/arbitrator/langs/c
@@ -0,0 +1 @@
+Subproject commit 94331a5fc321fb93f607b6ec131985fa2d070eb3
diff --git a/arbitrator/langs/c/arbitrum.h b/arbitrator/langs/c/arbitrum.h
deleted file mode 100644
index e9263dc70..000000000
--- a/arbitrator/langs/c/arbitrum.h
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright 2022, Offchain Labs, Inc.
-// For license information, see https://github.com/nitro/blob/master/LICENSE
-
-#ifndef ARBITRUM_HEADER_GUARD
-#define ARBITRUM_HEADER_GUARD
-
-#include <stddef.h>
-#include <stdint.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define USER_HOST import_module("vm_hooks")
-
-extern __attribute__((USER_HOST, import_name("read_args"))) void read_args(const uint8_t * data);
-extern __attribute__((USER_HOST, import_name("write_result"))) void write_result(const uint8_t * data, size_t len);
-extern __attribute__((USER_HOST, import_name("memory_grow"))) void memory_grow(uint32_t pages);
-
-typedef enum ArbStatus {
-    Success = 0,
-    Failure,
-} ArbStatus;
-
-typedef struct ArbResult {
-    const ArbStatus status;
-    const uint8_t * output;
-    const size_t output_len;
-} ArbResult;
-
-#define ARBITRUM_MAIN(user_main)                                        \
-    /* Force the compiler to import these symbols                    */ \
-    /* Note: calling these functions will unproductively consume gas */ \
-    __attribute__((export_name("mark_used")))                           \
-    void mark_used() {                                                  \
-        memory_grow(0);                                                 \
-    }                                                                   \
-                                                                        \
-    __attribute__((export_name("arbitrum_main")))                       \
-    int arbitrum_main(int args_len) {                                   \
-        const uint8_t args[args_len];                                   \
-        read_args(args);                                                \
-        const ArbResult result = user_main(args, args_len);             \
-        write_result(result.output, result.output_len);                 \
-        return result.status;                                           \
-    }
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif