Merge pull request #783 from eclipse-threadx/devv6.5.2.202603_rel

Merged changes ahead of the v6.5.2.202603 release

1 files changed, 50 insertions, 0 deletions

diff --git a/ports/risc-v64/gnu/example_build/erbium/entry.S b/ports/risc-v64/gnu/example_build/erbium/entry.S
new file mode 100644
index 00000000..201f986e
--- /dev/null
+++ b/ports/risc-v64/gnu/example_build/erbium/entry.S
@@ -0,0 +1,50 @@
+/***************************************************************************
+ * Copyright (c) 2026 Eclipse ThreadX contributors
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the MIT License which is available at
+ * https://opensource.org/licenses/MIT.
+ *
+ * AI Disclosure: This file was largely AI-generated by Claude Code (Opus 5.5).
+ * The AI-generated portions may be considered public domain (CC0-1.0)
+ * and not subject to the project's licence. The human contributor has
+ * reviewed and verified that the code is correct.
+ *
+ * SPDX-License-Identifier: MIT and CC0-1.0
+ **************************************************************************/
+
+/* Reset entry for the Erbium example.  Hart 0 sets up the global pointer,
+   the system stack and .bss, then calls main().  Any other hart is parked.  */
+
+    .section .text.entry, "ax", @progbits
+    .align 2
+    .global _start
+    .extern main
+    .extern _sysstack_end
+    .extern _bss_start
+    .extern _bss_end
+_start:
+    csrr    t0, mhartid
+    bnez    t0, _park
+
+.option push
+.option norelax
+    la      gp, __global_pointer$           // norelax keeps this load absolute
+.option pop
+
+    la      sp, _sysstack_end
+
+    la      t0, _bss_start                  // .bss is 16-byte aligned in link.lds
+    la      t1, _bss_end
+_bss_clear:
+    bgeu    t0, t1, _bss_done
+    sd      zero, 0(t0)
+    addi    t0, t0, 8
+    j       _bss_clear
+_bss_done:
+
+    call    main
+
+    /* The example never executes WFI; a parked hart spins.  */
+_park:
+    j       _park