Added a few feaures to the extras

extra_tests/001_test/Makefile

@@ -7,7 +7,7 @@ CXXFLAGS= --std=c++20 -target x86_64-none-linux-elf -Os -ffreestanding -nostdlib
 all: tests
 
 tests: bin/tests
-# ./bin/tests
+	./bin/tests
 
 bin/tests: main.cpp
 	@mkdir -p $(@D)

extra_tests/001_test/main.cpp

@@ -5,7 +5,9 @@ gp::buffer hello = "Hello world\n";
 
 extern "C" {
 void _start() {
+    auto memory = _mmap(0, 1 << 12, 2, 2 ^ 0x20, -1, 0);
     write(1, hello);
+    _munmap(memory, 1 << 12);
     exit(0);
 }
 }

extra_tests/001_test/syscall.hpp

@@ -51,8 +51,61 @@ struct syscall {
     }
 };
 
+template<int64_t syscall_id>
+struct syscall<syscall_id, 4> {
+    int64_t operator()(int64_t p1,int64_t p2,int64_t p3,int64_t p4) const {
+        int64_t ret;
+        register long r10 asm("r10") = p4;
+        asm volatile
+        (
+            "syscall"
+            : "=a" (ret)
+            : "0"(syscall_id), "D"(p1), "S"(p2), "d"(p3), "r"(r10)
+            : "rcx", "r11", "memory"
+        );
+        return ret;
+    }
+};
+
+template<int64_t syscall_id>
+struct syscall<syscall_id, 5> {
+    int64_t operator()(int64_t p1,int64_t p2,int64_t p3,int64_t p4,int64_t p5) const {
+        int64_t ret;
+        register long r10 asm("r10") = p4;
+        register long r8 asm("r8") = p5;
+        asm volatile
+        (
+            "syscall"
+            : "=a" (ret)
+            : "0"(syscall_id), "D"(p1), "S"(p2), "d"(p3), "r"(r10), "r"(r8)
+            : "rcx", "r11", "memory"
+        );
+        return ret;
+    }
+};
+
+template<int64_t syscall_id>
+struct syscall<syscall_id, 6> {
+    int64_t operator()(int64_t p1,int64_t p2,int64_t p3,int64_t p4,int64_t p5,int64_t p6) const {
+        int64_t ret;
+        register long r10 asm("r10") = p4;
+        register long r8 asm("r8") = p5;
+        register long r9 asm("r9") = p6;
+        asm volatile
+        (
+            "syscall"
+            : "=a" (ret)
+            : "0"(syscall_id), "D"(p1), "S"(p2), "d"(p3), "r"(r10), "r"(r8), "r"(r9)
+            : "rcx", "r11", "memory"
+        );
+        return ret;
+    }
+};
+
 constexpr auto _read = syscall<0, 3>{};
 constexpr auto _write = syscall<1, 3>{};
+constexpr auto _mmap = syscall<9, 6>{};
+constexpr auto _munmap = syscall<11, 2>{};
 constexpr auto _exit = syscall<60, 1>{};
 
 inline int read(int fd, char* buffer, size_t sz) {
@@ -63,6 +116,14 @@ inline int write(int fd, char* buffer, size_t sz) {
     return _write((int64_t)fd, (int64_t)buffer, (int64_t)sz);
 }
 
+inline void* mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) {
+    return (void*)_mmap((int64_t)addr, (int64_t)length, (int64_t)prot, (int64_t)flags, (int64_t)fd, (int64_t)offset);
+}
+
+inline int munmap(void *addr, size_t length) {
+    return _munmap((int64_t)addr, (int64_t)length);
+}
+
 inline int read(int fd, gp::buffer<char> buffer) {
     return _read((int64_t)fd, (int64_t)buffer.begin().data, (int64_t)buffer.size());
 }