feat: add lab-rv32i-c-machine-timer card

2026-07-21 19:14:20 +02:00
commit a0e116f24e
23 changed files with 4720 additions and 0 deletions
@@ -0,0 +1,25 @@
+  .text
+  .global _start
+  .type   _start, @function
+
+_start:
+.option push
+.option norelax
+  la      gp, __global_pointer$
+.option pop
+
+  # common/init.S has already installed sp and the vectored mtvec table.
+  # Clear BSS before C code observes ISR-owned globals.
+  la      a0, __bss_start
+  la      a1, __bss_end
+1:
+  bgeu    a0, a1, 2f
+  sb      zero, 0(a0)
+  addi    a0, a0, 1
+  j       1b
+2:
+  call    main
+  tail    _exit
+
+  .size _start, .-_start
+