C userspace programs

2025-09-04 23:20:30 +02:00
parent afa4d383e0
commit 90266f044b
51 changed files with 259 additions and 174 deletions
--- a/user/hello/Makefile
+++ b/user/hello/Makefile
@ -14,9 +14,9 @@ OBJ := $(call GET_OBJ, $(SRCFILES))

 all: $(TARGET)

-hello: $(OBJ)
+$(TARGET): $(OBJ)
 	$(LD) $^ $(LDFLAGS) -o $@
-	echo $(realpath hello) >> $(FILES)
+	echo $$(realpath $(TARGET)) >> $(FILES)

 clean:
 	rm -f $(OBJ) $(TARGET)
--- a/user/hello/hello.s
+++ b/user/hello/hello.s
@ -11,8 +11,7 @@ _start:
  movq $1, %rax
  lea STRING(%rip), %rdi
  lea STRING_LEN(%rip), %rsi
-  syscall
+  int $0x80

  movq $2, %rax
-  syscall
-
+  int $0x80