From 9c3ba04b2be3a323ba68500455d7fe2a4e886234 Mon Sep 17 00:00:00 2001
From: Matthias Kruk <m@m10k.eu>
Date: Sat, 1 Aug 2020 15:08:47 +0900
Subject: [PATCH] sys/test: Add userspace process for libc testing

---
 sys/Makefile      |  6 ++++--
 sys/initfs.c      |  9 +++++++++
 sys/test/Makefile | 26 +++++++++++++++++++++++++
 sys/test/main.c   | 48 +++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 87 insertions(+), 2 deletions(-)
 create mode 100644 sys/test/Makefile
 create mode 100644 sys/test/main.c

diff --git a/sys/Makefile b/sys/Makefile
index d884627..8ae819f 100644
--- a/sys/Makefile
+++ b/sys/Makefile
@@ -1,4 +1,4 @@
-DEPS = kbd vga io
+DEPS = kbd vga io test
 PHONY = $(DEPS) clean
 OUTPUT = initfs.a
 INCLUDES = -I.. -I../include
@@ -13,7 +13,9 @@ vga.ko: vga
 
 io.ko: io
 
-$(OUTPUT): initfs.o kbd.ko vga.ko io.ko
+test.ko: test
+
+$(OUTPUT): initfs.o kbd.ko vga.ko io.ko test.ko
 	ar -rc $@ $^
 
 updateinitfs:
diff --git a/sys/initfs.c b/sys/initfs.c
index 13de1c4..a0ef264 100644
--- a/sys/initfs.c
+++ b/sys/initfs.c
@@ -19,6 +19,10 @@ extern const char _binary_io_start[];
 extern const unsigned long _binary_io_size;
 #endif /* FEATURE(VGA) */
 
+extern const char _binary_test_end[];
+extern const char _binary_test_start[];
+extern const unsigned long _binary_test_size;
+
 static struct initfs_entry _ifs_entries[] = {
 #if FEATURE(IO)
 	{
@@ -41,6 +45,11 @@ static struct initfs_entry _ifs_entries[] = {
 		.ife_limit = (unsigned long)&_binary_vga_size
 	},
 #endif /* FEATURE(VGA) */
+	{
+		.ife_name = "test",
+		.ife_base = &_binary_test_start,
+		.ife_limit = (unsigned long)&_binary_test_size
+	}
 };
 
 struct initfs initfs = {
diff --git a/sys/test/Makefile b/sys/test/Makefile
new file mode 100644
index 0000000..5cf9b78
--- /dev/null
+++ b/sys/test/Makefile
@@ -0,0 +1,26 @@
+OBJECTS = main.o
+OUTPUT = test
+MODULE = test.ko
+
+INCLUDES = -I../../include -I../..
+CFLAGS = -m32 -Wall -nostdlib -nodefaultlibs -nostartfiles -ffreestanding \
+	 -nostdinc -fno-builtin -fno-builtin-memcpy
+LIBS = ../../libc/libc.a
+CFLAGS += $(INCLUDES)
+
+ASFLAGS = $(CFLAGS)
+PHONY = clean
+
+all: $(MODULE)
+
+$(MODULE): $(OUTPUT)
+	ld -r --oformat=elf32-i386 -m elf_i386 -b binary -o $@ $<
+	cp $@ ../
+
+$(OUTPUT): $(OBJECTS)
+	gcc -static $(CFLAGS) -o $@ $^ $(LIBS)
+
+clean:
+	rm -f $(OBJECTS) $(OUTPUT)
+
+.PHONY: $(PHONY)
diff --git a/sys/test/main.c b/sys/test/main.c
new file mode 100644
index 0000000..ecba8fa
--- /dev/null
+++ b/sys/test/main.c
@@ -0,0 +1,48 @@
+#include <unistd.h>
+#include <crxstd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char *argv[])
+{
+	char buf[128];
+	int fds[2];
+	int ret_val;
+	void *abuf;
+	void *bbuf;
+	void *heap;
+
+	heap = sbrk(0);
+
+	ret_val = snprintf(buf, sizeof(buf), "Heap base: %p / 0x%08lx\n", heap, heap);
+	debug(buf, ret_val);
+
+	abuf = sbrk(2048);
+
+	ret_val = snprintf(buf, sizeof(buf), "Allocated 4096B at %p / 0x%08lx\n", abuf, abuf);
+	debug(buf, ret_val);
+
+	bbuf = malloc(4096);
+
+	ret_val = snprintf(buf, sizeof(buf), "Allocated 4096B at %p / 0x%08x\n", bbuf, buf);
+	debug(buf, ret_val);
+
+	ret_val = snprintf(buf, sizeof(buf), "Calling pipe()\n");
+	debug(buf, ret_val);
+
+	ret_val = pipe(fds);
+
+	ret_val = snprintf(buf, sizeof(buf), "pipe() returned %u\n", ret_val);
+	debug(buf, ret_val);
+
+	while(1) {
+		#if 0
+		struct cxmsg msg;
+
+		/* guaranteed to cause the process to be suspended */
+		cxrecv(PID_IO, &msg);
+		#endif
+	}
+
+	return(0);
+}
-- 
2.47.3