nop_continue: init

nop_continue is a a windows exe that does nothing without black cmd window
but stays in background until manally terminated.

Close #1

Makefile

@@ -1,5 +1,5 @@
 CC ?= gcc
-CFLAGS += -Wall -Wextra -lkernel32 -O3 -Os -s \
+CFLAGS += -Wall -Wextra -lkernel32 -luser32 -O3 -Os -s \
 	-nostartfiles -nostdlib -nodefaultlibs -mwindows \
 	-fmerge-all-constants -fno-asynchronous-unwind-tables \
 	-Wl,--gc-sections -Wl,--build-id=none
@@ -8,7 +8,7 @@ EXTRA_CFLAGS = -fno-ident -fno-stack-protector -fomit-frame-pointer \
 	-fno-unwind-tables -falign-functions=1 -falign-jumps=1 -falign-loops=1 \
 	-ffunction-sections -fdata-sections  -fno-math-errno
 
-all: nop.exe
+all: nop.exe nop_continue.exe
 
 clean:
 	-@rm -f *.exe *.o

appveyor.yml

@@ -7,11 +7,15 @@ build_script:
 
     move /Y nop.exe nop_x64.exe
 
+    move /Y nop_continue.exe nop_continue_x64.exe
+
     set MSYSTEM=MINGW32
 
     C:\msys64\usr\bin\bash -lc "cd \"$APPVEYOR_BUILD_FOLDER\" && exec make"
 
     move /Y nop.exe nop_x86.exe
+
+    move /Y nop_continue.exe nop_continue_x86.exe
 test_script:
 - cmd: >-
     start /wait nop_x64.exe
@@ -20,6 +24,10 @@ test_script:
 artifacts:
 - path: nop_x64.exe
 - path: nop_x86.exe
+- path: nop_continue_x64.exe
+- path: nop_continue_x86.exe
 on_failure:
 - appveyor PushArtifact nop_x64.exe
-- appveyor PushArtifact nop_x86.exe
+- appveyor PushArtifact nop_x86.exe
+- appveyor PushArtifact nop_continue_x64.exe
+- appveyor PushArtifact nop_continue_x86.exe

nop_continue.c

@@ -0,0 +1,8 @@
+#include <windows.h>
+
+int __cdecl WinMainCRTStartup() {
+  MSG msg;
+  GetMessage(&msg, NULL, 0, 0);
+  ExitProcess(0);
+  return 0;
+}