forth-riscv

commit 5cd67bcd8e97d189c0c5b87b43cdf1cde0fcfef2
parent 9bf77f0cd30845c8d018242ee6ca2dbe3627ba09
Author: Christian Ermann <christianermann@gmail.com>
Date:   Sat, 26 Oct 2024 12:12:29 -0700

Set stack params in linker script

Diffstat:
M
forth.s
 | 
5
+----
M
riscv32-virt.ld
 | 
2
++

2 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/forth.s b/forth.s
@@ -1,7 +1,6 @@
 .extern uart_put_char
 .extern uart_get_char
 .extern uart_put_string
-.extern __stack_top
 
 #define w   a0
 #define x   a1
@@ -236,14 +235,12 @@ version_string:
 	version_string_len = (. - version_string)
 
 word_buffer: .space 255
-return_stack: .space 512
-return_stack_top:
 latest: .int name_find
 
 .section ".text.boot"
 start:
 	la psp, __stacktop
-	la rsp, return_stack_top
+	la rsp, __stacktop_ret
 	la ip, program
 
 	push_addr version_string
diff --git a/riscv32-virt.ld b/riscv32-virt.ld
@@ -8,7 +8,9 @@ MEMORY {
 }
 
 SECTIONS {
+    __stacksize = 256;
     __stacktop = ORIGIN(RAM) + LENGTH(RAM);
+    __stacktop_ret = __stacktop - __stacksize;
 
     . = ORIGIN(RAM);
     .text : { *(.text.boot); *(.text); *(.text.*) } >RAM