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lib/utils/gchelper_m3: Add license header and clean up code. 

This file generates the same code with the cortex-m3 and cortex-m4
assembler directive, so use cortex-m3 to support more CPUs.
This commit is contained in:
Damien George 2019-02-12 14:16:24 +11:00
parent e6d97e8a0b
commit 90e1303b2d
1 changed files with 33 additions and 40 deletions
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71
lib/utils/gchelper_m3.s
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@ -1,14 +1,40 @@
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
.syntax unified
.cpu cortex-m4
.cpu cortex-m3
.thumb
.text
.section .text
.align 2
@ uint gc_helper_get_regs_and_sp(r0=uint regs[10])
.global gc_helper_get_regs_and_sp
.thumb
.thumb_func
.type gc_helper_get_regs_and_sp, %function
@ uint gc_helper_get_regs_and_sp(r0=uint regs[10])
gc_helper_get_regs_and_sp:
@ store registers into given array
str r4, [r0], #4
@ -26,37 +52,4 @@ gc_helper_get_regs_and_sp:
mov r0, sp
bx lr
@ this next function is now obsolete
.size gc_helper_get_regs_and_clean_stack, .-gc_helper_get_regs_and_clean_stack
@ void gc_helper_get_regs_and_clean_stack(r0=uint regs[10], r1=heap_end)
.global gc_helper_get_regs_and_clean_stack
.thumb
.thumb_func
.type gc_helper_get_regs_and_clean_stack, %function
gc_helper_get_regs_and_clean_stack:
@ store registers into given array
str r4, [r0], #4
str r5, [r0], #4
str r6, [r0], #4
str r7, [r0], #4
str r8, [r0], #4
str r9, [r0], #4
str r10, [r0], #4
str r11, [r0], #4
str r12, [r0], #4
str r13, [r0], #4
@ clean the stack from given pointer up to current sp
movs r0, #0
mov r2, sp
b.n .entry
.loop:
str r0, [r1], #4
.entry:
cmp r1, r2
bcc.n .loop
bx lr
.size gc_helper_get_regs_and_clean_stack, .-gc_helper_get_regs_and_clean_stack
.size gc_helper_get_regs_and_sp, .-gc_helper_get_regs_and_sp