From d1ebd3bd806f4b4e1f74703f682ca64994c79a28 Mon Sep 17 00:00:00 2001
From: Josh Rahm <joshuarahm@gmail.com>
Date: Thu, 14 Nov 2024 02:19:09 -0700
Subject: Get a good, basic framework for ISRs and properly handle the data
 sections.

---
 linker/ls.ld | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

(limited to 'linker')

diff --git a/linker/ls.ld b/linker/ls.ld
index e4cc0af..18ee181 100644
--- a/linker/ls.ld
+++ b/linker/ls.ld
@@ -7,22 +7,36 @@ MEMORY
 SECTIONS
 {
   . = ORIGIN(flash);
+
   .text : ALIGN(0x04) {
-    *(.isr_vector);
-    . = ALIGN(0x100);
+    *(.sinit);
+
+    /* The ch573 starts execution at address 0x0000, so we have to make sure the
+     * on_reset function is put at the beginning of the flash. */
+    *(.isr_routines.on_reset);
+
+    /* The rest of the code. */
     *(.text);
   } >flash AT>flash
 
-  DATA_VALUES_IN_FLASH = LOADADDR(.data);
+  ISR_VECTOR_IN_FLASH = LOADADDR(.isr_vector);
+  .isr_vector : ALIGN(0x04) {
+    ISR_VECTOR_START = .;
+    *(.isr_vector);
+    ISR_VECTOR_STOP = .;
+  } >sram AT>flash
 
+  DATA_VALUES_IN_FLASH = LOADADDR(.data);
   .data : ALIGN(0x04) {
     . = ALIGN(0x04);
     DATA_SEGMENT_START = .;
     *(.data);
     *(.data.*);
+    *(.sdata);
     *(.rodata.*);
-    DATA_SEGMENT_STOP = .;
+    *(.srodata.*);
     . = ALIGN(0x04);
+    DATA_SEGMENT_STOP = .;
   } >sram AT>flash
 
   .bss : ALIGN(0x04) {
-- 
cgit