1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
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
|
