add linker script

2 files changed, 25 insertions, 0 deletions

diff --git a/build.zig b/build.zig
index 1debe5a..7a1a994 100644
--- a/build.zig
+++ b/build.zig
@@ -32,6 +32,8 @@ pub fn build(b: *std.Build) void {
         .optimize = optimize,
     });
 
+    exe.setLinkerScript(std.Build.LazyPath.relative("linker.ld"));
+
     // This declares intent for the executable to be installed into the
     // standard location when the user invokes the "install" step (the default
     // step when running `zig build`).
diff --git a/linker.ld b/linker.ld
new file mode 100644
index 0000000..323eb69
--- /dev/null
+++ b/linker.ld
@@ -0,0 +1,23 @@
+OUTPUT_ARCH("riscv")
+
+ENTRY(start)
+
+PHDRS {
+	lo_rx PT_LOAD FLAGS (5); /* R-X */
+	lo_r  PT_LOAD FLAGS (4); /* R-- */
+	lo_rw PT_LOAD FLAGS (6); /* RW- */
+}
+
+SECTIONS {
+	. = 0x80200000;
+	.text (0x80200000) : {
+		*(.text.start)
+		*(.text .text.*)
+	} : lo_rx
+
+	.rodata : { *(.rodata .rodata.*) } : lo_r
+	.data   : { *(.data    .data.* ) } : lo_rw
+	.bss    : { *(.bss     .bss.*  ) } : lo_rw
+
+	/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }
+}