From d3f3adbf40d52b6006be41dfaac77747609c696a Mon Sep 17 00:00:00 2001
From: Anton Lydike <me@antonlydike.de>
Date: Fri, 16 Jul 2021 19:54:08 +0200
Subject: [PATCH] using my own linker now

---
 Makefile        |  2 +-
 kinclude/boot.S |  2 +-
 linker.ld       | 31 +++++++++++++++++++++++++++++++
 3 files changed, 33 insertions(+), 2 deletions(-)
 create mode 100644 linker.ld

diff --git a/Makefile b/Makefile
index ee83dbf..adf7c3b 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,7 @@ GCC_PREF=riscv32-unknown-elf-
 CC=$(GCC_PREF)gcc
 OBJDUMP=$(GCC_PREF)objdump
 CFLAGS=-I$(KLIBDIR) -march=rv32im -O3
-KERNEL_CFLAGS=-nostdlib
+KERNEL_CFLAGS=-nostdlib -T linker.ld
 
 # dependencies that need to be built:
 _DEPS = ecall.c csr.c mutex.c sched.c
diff --git a/kinclude/boot.S b/kinclude/boot.S
index cfba7b8..96799e6 100644
--- a/kinclude/boot.S
+++ b/kinclude/boot.S
@@ -5,7 +5,7 @@ stack_bottom:
 stack_top:
 
 
-.section    .text
+.section    .text._start
 
 
 // Set up all the CSR mstatus_offsets
diff --git a/linker.ld b/linker.ld
new file mode 100644
index 0000000..2975ade
--- /dev/null
+++ b/linker.ld
@@ -0,0 +1,31 @@
+OUTPUT_ARCH("riscv")
+ENTRY(_start)
+SECTIONS
+{
+    . = 0x00000100;
+    .text : 
+    {
+        *(.text._start)
+        *(.text)
+    } 
+    .sdata : 
+    {
+        __global_pointer$ = . + 0x800;
+        *(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata .srodata.*)
+        *(.sdata .sdata.* .gnu.linkonce.s.*)
+    }
+    _edata = .; PROVIDE (edata = .);
+    . = .;
+    __bss_start = .;
+    .sbss :
+    {
+        *(.dynsbss)
+        *(.sbss .sbss.* .gnu.linkonce.sb.*)
+        *(.scommon)
+    }
+    __bss_end = .;
+    .stack : 
+    {
+        *(.stack)
+    }
+}
\ No newline at end of file