From d40fe3a6503586eb2ce93311cc4bf23febfbeb83 Mon Sep 17 00:00:00 2001
From: Thomas Voss <mail@thomasvoss.com>
Date: Tue, 11 Jun 2024 02:00:43 +0200
Subject: Get building & linking with LLVM working
---
src/codegen.c | 38 ++++++++++++++++++++++++++++++++++++++
src/codegen.h | 9 +++++++++
src/main.c | 2 ++
3 files changed, 49 insertions(+)
create mode 100644 src/codegen.c
create mode 100644 src/codegen.h
(limited to 'src')
diff --git a/src/codegen.c b/src/codegen.c
new file mode 100644
index 0000000..a9e5006
--- /dev/null
+++ b/src/codegen.c
@@ -0,0 +1,38 @@
+#include <llvm-c/Analysis.h>
+#include <llvm-c/Core.h>
+
+#include "codegen.h"
+
+void
+codegen(struct ast_soa ast, struct lexemes_soa toks)
+{
+ (void)ast;
+ (void)toks;
+
+ /* Create a new module */
+ LLVMModuleRef mod = LLVMModuleCreateWithName("oryx");
+
+ /* Declare the function ‘sum :: (int, int) int’ */
+ LLVMTypeRef param_types[] = {LLVMInt32Type(), LLVMInt32Type()};
+ LLVMTypeRef ret_type = LLVMFunctionType(LLVMInt32Type(), param_types, 2, 0);
+ LLVMValueRef sum = LLVMAddFunction(mod, "sum", ret_type);
+
+ /* Create an entry block, and a builder */
+ LLVMBasicBlockRef entry = LLVMAppendBasicBlock(sum, "entry");
+ LLVMBuilderRef builder = LLVMCreateBuilder();
+ LLVMPositionBuilderAtEnd(builder, entry);
+
+ /* Generate an ADD instruction */
+ LLVMValueRef tmp = LLVMBuildAdd(builder, LLVMGetParam(sum, 0),
+ LLVMGetParam(sum, 1), "tmpadd");
+ LLVMBuildRet(builder, tmp);
+
+ /* Verify that all went well and if not we abort */
+ char *error = NULL;
+ LLVMVerifyModule(mod, LLVMAbortProcessAction, &error);
+ LLVMDisposeMessage(error);
+
+ LLVMDumpModule(mod);
+
+ LLVMDisposeBuilder(builder);
+}
diff --git a/src/codegen.h b/src/codegen.h
new file mode 100644
index 0000000..79f3ad7
--- /dev/null
+++ b/src/codegen.h
@@ -0,0 +1,9 @@
+#ifndef ORYX_CODEGEN_H
+#define ORYX_CODEGEN_H
+
+#include "lexer.h"
+#include "parser.h"
+
+void codegen(struct ast_soa ast, struct lexemes_soa toks);
+
+#endif /* !ORYX_CODEGEN_H */
diff --git a/src/main.c b/src/main.c
index b156466..03ce9ca 100644
--- a/src/main.c
+++ b/src/main.c
@@ -5,6 +5,7 @@
#include <stdlib.h>
#include <unistd.h>
+#include "codegen.h"
#include "errors.h"
#include "lexer.h"
#include "parser.h"
@@ -24,6 +25,7 @@ main(int argc, char **argv)
struct lexemes_soa toks = lexstring(src, srclen);
struct ast_soa ast = parsetoks(toks);
+ codegen(ast, toks);
#if DEBUG
free(src);
--
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