From 537ff1b3a926ede84ef7acbdd6ba5c061d907e75 Mon Sep 17 00:00:00 2001
From: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
Date: Fri, 24 Dec 2021 13:24:08 +0200
Subject: [PATCH] chap-05: Add demo showing data sections

Source code files are both in C and in assembly.

Signed-off-by: Razvan Deaconescu <razvan.deaconescu@cs.pub.ro>
---
 curs/chap-05-ihs/08-data/.gitignore   |  3 +++
 curs/chap-05-ihs/08-data/Makefile     | 25 +++++++++++++++++++++++++
 curs/chap-05-ihs/08-data/data_asm.asm | 25 +++++++++++++++++++++++++
 curs/chap-05-ihs/08-data/data_c.c     |  8 ++++++++
 4 files changed, 61 insertions(+)
 create mode 100644 curs/chap-05-ihs/08-data/.gitignore
 create mode 100644 curs/chap-05-ihs/08-data/Makefile
 create mode 100644 curs/chap-05-ihs/08-data/data_asm.asm
 create mode 100644 curs/chap-05-ihs/08-data/data_c.c

diff --git a/curs/chap-05-ihs/08-data/.gitignore b/curs/chap-05-ihs/08-data/.gitignore
new file mode 100644
index 00000000..6f71ad17
--- /dev/null
+++ b/curs/chap-05-ihs/08-data/.gitignore
@@ -0,0 +1,3 @@
+/data_c
+/data_asm
+/data_c.s
diff --git a/curs/chap-05-ihs/08-data/Makefile b/curs/chap-05-ihs/08-data/Makefile
new file mode 100644
index 00000000..f9b608bf
--- /dev/null
+++ b/curs/chap-05-ihs/08-data/Makefile
@@ -0,0 +1,25 @@
+CFLAGS = -m32 -fno-PIC -Wall
+LDFLAGS = -m32 -no-pie
+ASFLAGS = -f elf32
+AS = nasm
+
+.PHONY: all clean
+
+all: data_c data_asm data_c.s
+
+data_c: data_c.o
+
+data_c.o: data_c.c
+
+data_c.s: data_c.c
+	$(CC) -S -o $@ $<
+
+data_asm: data_asm.o
+
+data_asm.o: data_asm.asm
+	$(AS) $(ASFLAGS) -o $@ $<
+
+clean:
+	-rm -f *~
+	-rm -f data_c.o data_c
+	-rm -f data_asm.o data_asm
diff --git a/curs/chap-05-ihs/08-data/data_asm.asm b/curs/chap-05-ihs/08-data/data_asm.asm
new file mode 100644
index 00000000..c08feeae
--- /dev/null
+++ b/curs/chap-05-ihs/08-data/data_asm.asm
@@ -0,0 +1,25 @@
+section .data
+global init
+
+init: dd 3
+
+section .bss
+global non_init
+
+non_init: resd 1
+
+section .rodata
+global ro
+
+ro: dd 10
+
+section .text
+
+global main
+
+main:
+    push ebp
+    mov ebp, esp
+
+    leave
+    ret
diff --git a/curs/chap-05-ihs/08-data/data_c.c b/curs/chap-05-ihs/08-data/data_c.c
new file mode 100644
index 00000000..0201b7eb
--- /dev/null
+++ b/curs/chap-05-ihs/08-data/data_c.c
@@ -0,0 +1,8 @@
+int non_init;
+int init = 3;
+const int ro = 10;
+
+int main(void)
+{
+	return 0;
+}