From 401bf03070458cf3a5ee6947bd01a8f397fe2909 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <kwojtus@protonmail.com>
Date: Mon, 2 Dec 2019 16:37:22 +0100
Subject: create a separate library for kernel code that should run in PL0 mode

---
 Makefile | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index ce29a19..f07bced 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,10 @@ ELFFLAGS=-ffreestanding -O2 -nostdlib -lgcc -I.
 
 ARM_OBJECTS=kernel.o paging.o demo_functionality.o PL0_test.o uart.o loader_stage1.o loader_stage2.o
 
+EMBEDDABLE_OBJECTS=PL_0_test_embeddable.o loader_stage2_embeddable.o
+
+RENAME_FLAGS=--rename-section .data=.renamed_data --rename-section .rodata=.renamed_rodata --rename-section .text=.renamed_text --rename-section .bss=.renamed_bss
+
 all : kernel7.img
 
 %.o : %.c
@@ -17,10 +21,16 @@ all : kernel7.img
 %_embeddable.o : %.img
 	arm-none-eabi-objcopy -I binary -O elf32-littlearm -B arm --rename-section .data=.rodata $^ $@
 
+libkernel.o : libkernel.c
+	arm-none-eabi-gcc $(CFLAGS) -fPIC -c $^ -o $@
+
+libkernel_renamed.o : libkernel.o
+	arm-none-eabi-objcopy $(RENAME_FLAGS) $^ $@
+
 PL_0_test.elf : PL0_test.o uart.o
 	arm-none-eabi-gcc -T PL0_test.ld -o $@ $(ELFFLAGS) $^
 
-kernel.elf : boot.o kernel.o uart.o PL_0_test_embeddable.o demo_functionality.o paging.o
+kernel.elf : boot.o kernel.o uart.o PL_0_test_embeddable.o demo_functionality.o paging.o libkernel_renamed.o
 	arm-none-eabi-gcc -T linker.ld -o $@ $(ELFFLAGS) $^
 
 loader_stage2.elf : loader_stage2.o uart.o
-- 
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