From 789ebeb7d097d2824ff62c73438af4cb77f882bc Mon Sep 17 00:00:00 2001
From: Mistivia <i@mistivia.com>
Date: Fri, 15 Nov 2024 21:22:20 +0800
Subject: finish project framework

---
 .gitignore            |  5 +++++
 Makefile              |  4 +++-
 compile_commands.json | 43 +++++++++++++++++++++++++++++++++++++++++++
 scripts/runall.sh     |  9 +++++++++
 src/fvm.c             |  3 +++
 src/fvm.h             |  2 ++
 src/main.c            |  5 +++++
 tests/test_opcodes.c  | 45 +++++++++++++++++++++++++++++++++++++++++++++
 8 files changed, 115 insertions(+), 1 deletion(-)
 create mode 100644 .gitignore
 create mode 100644 compile_commands.json
 create mode 100755 scripts/runall.sh
 create mode 100644 src/main.c
 create mode 100644 tests/test_opcodes.c

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8bc6794
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+foo
+*.o
+*.d
+*.bin
+.cache
diff --git a/Makefile b/Makefile
index 4095f31..1a79f46 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-target = foo
+target = fvm
 cflags = -g
 ldflags = -lm
 cc = gcc
@@ -10,6 +10,8 @@ tests_bin=$(tests:.c=.bin)
 
 all: $(target)
 
+full: all $(tests_bin)
+
 $(target): $(obj) src/main.o
 	$(cc) $(cflags) $(ldflags) -o $@ $^
 
diff --git a/compile_commands.json b/compile_commands.json
new file mode 100644
index 0000000..5702bfd
--- /dev/null
+++ b/compile_commands.json
@@ -0,0 +1,43 @@
+[
+  {
+    "arguments": [
+      "/usr/bin/gcc",
+      "-c",
+      "-g",
+      "-o",
+      "src/fvm.o",
+      "src/fvm.c"
+    ],
+    "directory": "/home/mistivia/repos/fvm",
+    "file": "/home/mistivia/repos/fvm/src/fvm.c",
+    "output": "/home/mistivia/repos/fvm/src/fvm.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/gcc",
+      "-c",
+      "-g",
+      "-o",
+      "src/main.o",
+      "src/main.c"
+    ],
+    "directory": "/home/mistivia/repos/fvm",
+    "file": "/home/mistivia/repos/fvm/src/main.c",
+    "output": "/home/mistivia/repos/fvm/src/main.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/gcc",
+      "-c",
+      "-Isrc/",
+      "-g",
+      "src/fvm.o",
+      "-o",
+      "tests/test_opcodes.bin",
+      "tests/test_opcodes.c"
+    ],
+    "directory": "/home/mistivia/repos/fvm",
+    "file": "/home/mistivia/repos/fvm/tests/test_opcodes.c",
+    "output": "/home/mistivia/repos/fvm/tests/test_opcodes.bin"
+  }
+]
diff --git a/scripts/runall.sh b/scripts/runall.sh
new file mode 100755
index 0000000..3fdc745
--- /dev/null
+++ b/scripts/runall.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+for var in "$@"; do
+    ./$var
+    if [ $? -ne 0 ]; then
+        exit 255
+    fi
+done
+
diff --git a/src/fvm.c b/src/fvm.c
index 3f1e3fb..858bd4a 100644
--- a/src/fvm.c
+++ b/src/fvm.c
@@ -409,6 +409,9 @@ int fvm_execute(struct fvm *vm) {
       fvm_pushf(vm, (fvm_float_t)x);
       vm->pc++;
       break;
+    case FVM_OP_EXIT:
+      a = fvm_pop(vm);
+      return a;
     default:
       fprintf(stderr, "unknown opcode.\n");
       break; 
diff --git a/src/fvm.h b/src/fvm.h
index 40c71e2..bfa5888 100644
--- a/src/fvm.h
+++ b/src/fvm.h
@@ -90,6 +90,8 @@ enum fvm_op {
 
   FVM_OP_FTI,
   FVM_OP_ITF,
+
+  FVM_OP_EXIT,
 };
 
 int fvm_init(struct fvm *vm, void *code, int64_t stack_size);
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..62742b5
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,5 @@
+#include "fvm.h"
+
+int main() {
+    return 0;
+}
diff --git a/tests/test_opcodes.c b/tests/test_opcodes.c
new file mode 100644
index 0000000..27bfbf3
--- /dev/null
+++ b/tests/test_opcodes.c
@@ -0,0 +1,45 @@
+#include <assert.h>
+#include <stdio.h>
+
+#include "fvm.h"
+
+char code[4096];
+char stack[4096];
+int code_cursor = 0;
+struct fvm vm;
+
+static void reset() {
+  vm.pc = (int64_t)code;
+  vm.sp = (int64_t)stack + 4095;
+  vm.bp = (int64_t)stack + 4095;
+  code_cursor = 0;
+}
+
+static void emit_op(enum fvm_op op) {
+  code[code_cursor] = (char)op;
+  code_cursor++;
+}
+static void emit_num(int64_t x) {
+  *(int64_t*)(code + code_cursor) = x;
+  code_cursor += 8;
+}
+
+void test_imm() {
+  printf("[TEST] imm\n");
+
+  reset();
+
+  emit_op(FVM_OP_IMM);
+  emit_num(3);
+  emit_op(FVM_OP_EXIT);
+
+  assert(fvm_execute(&vm) == 3);
+
+  printf("[PASS] imm\n");
+}
+
+int main()
+{
+  test_imm(); 
+  return 0;
+}
-- 
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